Dissertations / Theses: 'Cumene'

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Lu, Yuan. "Reaction mechanism of cumene hydroperoxide decomposition in cumene and evaluation of its reactivity hazards." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2904.

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Tuli, Leepika. "Proteome Profiling of Saccharomyces cerevisae stress response to Cumene Hydroperoxide (CHP)." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/28620.

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Oxidative stress, described as the state of disturbed intracellular redox balance, has been associated with several human conditions including ageing, apoptosis, cancer, autoimmune and neuro-degenerative diseases. Stress studies have shown that reactive oxygen species (ROS) and reactive nitrogen species (RNS) along with its intermediates can attack essential cell targets such as: DNA, proteins, lipids and carbohydrates, leaving behind dysfunctional biologic molecules. In effect, a cellâ s primary response is to involve several defense mechanisms that are under a complex and intricate regulatory control to repair any damages that may have occurred. Although several stress studies have been conducted in the past that have approached this biologically complex process step by step, application of a Systems Biology towards a comprehensive understanding is still emerging. The current objective of this project is to identify proteins that change in response to cumene hydroperxoide (CHP) treatment and in parallel make an attempt to uncover events and processes that are a part of CHP-induced oxidative stress response. From a systems biology viewpoint, the Yeast Oxidative Stress project will monitor response at three different levels: transcriptomics, proteomics and metabolomics, with dynamic changes being measured from 3 to 120 min after CHP addition. Data collected from the different levels will be integrated to accomplish a holistic viewpoint of stress response in the given system and to develop mathematical tools for modeling biochemical networks. Saccharomyces cerevisiae was chosen as a model, based on its availability of a completely mapped genome sequence with a collection of null mutants that was relevant to our fundamental research of stress response mechanism. Yeast, a simple unicellular eukaryote has been extensively used for applied studies and has proven to be indispensable for stress research. Information derived from this project can reveal response mechanisms used by higher eukaryotes, especially if via analogous signaling cascades that are comparable between organisms. Current research investigates an optimal workflow for generating 2D gel based protein expression data and identifying proteins that are induced by cumene hydroperoxide treatment. A non-targeted protein profiling followed by a 2-way ANOVA analysis provided a list of proteins that differ significantly between treatments. Protein identification provided relevant information on which proteins are affected by CHP induced stress response, including posttranslational modifications of peroxiredoxins. Redox active protein, Ahp1, was regulated post-translationally with sulfonic acid modification observed for its active Cys(62) residue.
Ph. D.

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Hurgobin, Sooviraj. "The effect of synthesis and post-synthesis modifications on the activity of zeolite beta for cumene synthesis." Master's thesis, University of Cape Town, 1998. http://hdl.handle.net/11427/17951.

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Bibliography: pages 128-140.
The isopropylation of benzene to produce cumene is an important petrochemical process since cumene is used as a chemical intermediate for the production of phenol and acetone. In recent years, the good performance of zeolite Beta for this particular reaction has often been reported in the literature (Reddy et al., 1993, Bellussi et al., 1995 and Perego et al., 1996). It is known, from the numerous studies that have been carried out on other zeolite types, that post synthesis modifications such as dealumination of the zeolite framework tend to enhance the activity of these zeolites for catalytic reactions. Moreover, the effect of synthesis parameters on the catalytic activity of zeolite Beta is an important issue that has not been thoroughly investigated in the literature. In this study, a commercial parent zeolite Beta catalyst (sample A) was modified by post synthesis modifications such as steaming, acid washing or steaming followed by acid washing. A series of zeolite Beta catalysts were also synthesised by different techniques. The samples were characterised with respect to structure, morphology, particle size, number of acid sites, co-ordination state of aluminium and the environment of silicon atoms. The isopropylation of benzene to cumene was used as a test reaction to evaluate the effect of post-synthesis modifications and synthesis procedure on the catalytic activity of the zeolite Beta catalysts.

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Crites, Charles-Oneil. "Investigating the Interactions between Free Radicals and Supported Noble Metal Nanoparticles in Oxidation Reactions." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33404.

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This thesis studies the interaction between free radical species and supported noble metal nanoparticles (silver and gold) in the context of oxidation reactions. The peroxidation of cumene is the first reaction to be discussed and the difference in peroxidation product distribution using silver nanoparticles (AgNP) versus gold nanoparticles (AuNP) is examined. Specifically, cumyl alcohol is obtained as the major product obtained when using supported AuNP, whereas cumene hydroperoxide is favoured for AgNP. Such variations in product distribution are partially explained by the differences in the nanoparticle Fenton activity, where the TiO2 support was proposed to enhance such activity due to possible electron shuttling capabilities with the nanoparticle surface. Use of hydrotalcite as a support was found to minimize this characteristic, due to its insulator properties. The stability of hydroperoxide was tested in the presence of various others supports (activated carbon, Al2O3, ZnO, SiO2 and clays) with little success, with hydroperoxide exhibiting stability in the presence of HT. Using an oxygen uptake apparatus, the interaction of the cumyl peroxyl radical with the AuNP surface was demonstrated. Furthermore, this interaction promotes decomposition leading to the corresponding alkoxyl radical and subsequent hydrogen abstraction to form the observed cumyl alcohol product. The radical interaction with supported nanoparticles, and its reversibility appear different for gold and silver and accounts for a large part of the product distribution differences observed between AuNP and AgNP, as illustrated below. The peroxidation of ethylbenzene and propylbenzene was studied and revealed the participation of a reactive surface oxygen species due to the decomposition of peroxyl radicals on the nanoparticle surface. The reactive oxygen species was found to be transient in nature in the case of AuNP . Furthermore, this surface species was found to be an important participant in hydrogen abstraction leading to peroxide product formation. Finally, supported nanoparticle catalyzed tetralin peroxidation was investigated to determine the influence of temperature on the peroxidation product distribution and how changes in the reaction temperature can effect the radical-nanoparticle surface interactions.

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CABRAL, Rucilana Patrícia Bezerra. "Síntese e avaliação de NiMo/Beta e NiMo/SAPO-5 no hidrocraqueamento do cumeno com piridina." Universidade Federal de Campina Grande, 2008. http://dspace.sti.ufcg.edu.br:8080/jspui/handle/riufcg/1695.

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Devido ao aumento na produção de óleo pesado, a indústria do refino voltou-se para os processos de hidrocraqueamento (HCC) que fornecem combustíveis básicos e leves atendendo as exigências da sociedade moderna. O processo HCC é realizado, geralmente, sob temperaturas e pressões elevadas na presença do hidrogênio e de um catalisador de hidrocraqueamento. As cargas de petróleo brasileiras inevitavelmente contêm muitas impurezas, como os compostos orgânicos nitrogenados. Estes compostos de nitrogênio presentes nas cargas de hidrocraqueamento atuam como venenos temporários dos catalisadores, resultando numa diminuição de atividade destes catalisadores. Normalmente, os catalisadores de HCC compreendem de um suporte ácido mais um componente hidrogenante selecionado do Grupo VIB e do grupo VIII da Tabela periódica dos Elementos, na forma de óxido ou sulfeto. Zeólita Beta e SAPO-5 foram propostos para serem usados como suportes ácidos. A respeito do componente hidrogenante, a combinação de metais usados, expressada como óxidos, foi NiO-MoO3. Uma série de catalisadores NiMo suportados em Zeólita Beta e SAPO-5, de diferentes composições, foram preparados por impregnação seqüencial úmida dos materiais utilizando soluções aquosas precursoras de Ni(NO3)2.6H2O e (NH4)6 Mo7O24. 4H2O. Os suportes e catalisadores foram analisados pelas técnicas: Difração de raios-X (DRX), Espectrometria de Emissão Atômica de Plasma Acoplado Induzido (ICPAES), Adsorção Física de N2 pelo método BET, Redução com Temperatura Programada (RTP), Microscopia Eletrônica de Transmissão (MET), Espectroscopia no Infravermelho de piridina adsorvida (IV), Espectroscopia de Refletância Difusa (DRS) e Espectroscopia de Ressonância Magnética Nuclear (RMN). Os catalisadores NiMo sulfetados foram avaliados usando um reator tubular de fluxo contínuo, no hidrocraqueamento do cumeno na presença e ausência de piridina. Foi verificado que os catalisadores suportados em zeólita Beta promoveram maiores conversões que os suportados em SAPO-5, principalmente o que usou zeólita Beta (Si/Al=8,2) com 4%NiO e 15%MoO3. A presença da piridina foi prejudicial à performance de todos os catalisadores, inclusive para os padrões cedidos pelo CENPES.
Due to the increasing of the heavier crude oil feedstocks production, the oil refining industry has turned to hydrocracking (HCK) processes to provide the lighter basic fuels which modern society demands. The HCK process is generally carried out under high temperatures and pressures in the presence of the hydrogen and a HCK catalyst. The feedstocks of the Brazilian crudes inevitably contain many impurities, such as organic nitrogen compounds. These nitrogen compounds present in the feeds of hydrocracking process act as, temporary poisons to the catalysts, thereby decreasing the catalyst activity. Usually, hydrocracking catalysts comprise of an acidic support plus a hydrogenating component selected from the Group VIB metals and Group VIII metals of the Periodic Table of the Elements, in their oxide or sulfide form. Beta zeolite and SAPO-5 are proposed as acidic support materials for hydrocracking. Regarding the hydrogenation component the combination of the metals used in the form of oxides, was NiO-MoO3. A series of NiMo catalysts supported on Beta zeolite and SAPO-5, of different compositions, were prepared by sequential incipient wetness impregnation of the materials with aqueous solutions of Ni(NO3)2 . 6H2O and (NH4)6 Mo7O24.4H2O. The supports and catalysts were analyzed by several techniques such as: X-ray diffraction (XRD), plasma-emission spectrometry (ICP-AES), N2 physical adsorption by BET method, temperature programmed reduction (TPR), transmission electronic microscopy (TEM), infrared spectroscopy of adsorbed pyridine (IR), diffuse reflectance spectroscopy (DRS) and nuclear magnetic resonance (NMR) spectroscopy. The sulfide NiMo catalysts were evaluated using a continuous-flow tubular reactor by the cumene hydrocracking in the presence and absence of pyridine. It was verified that the NiMo catalysts based on Beta zeolite produced the highest cumene conversion than those based on SAPO-5, particularly the one with Beta zeolite (Si/Al=8,2) containing 4%NiO and 15%MoO3. The presence of nitrogen as pyridine was detrimental for the performance of all catalysts, including the standards one, supplied for the CENPES.

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VIMARD, FLORENCE. "Mecanismes d'action cytotoxique de l'hydroperoxyde de cumene sur la lignee pc12. Action protectrice du bfgf et des agents reducteurs des thiols." Caen, 1996. http://www.theses.fr/1996CAEN2051.

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De nombreux arguments directs ou indirects suggerent que les derives de l'oxygene (do) sont impliques dans les phenomenes de degenerescence neuronales observes a la suite d'un accident ischemique ou au cours de nombreuses maladies neurodegeneratives. Nous avons utilise une lignee cellulaire modele, la lignee pc12, et teste l'action cytotoxique d'un peroxyde exogene, l'hydroperoxyde de cumene. L'action cytotoxique de l'hydroperoxyde de cumene est rapide et provoque un detachement des cellules suivi d'une permeabilisation de la membrane plasmique. Le peroxyde touche de facon precoce le compartiment mitochondrial et le cytosquelette. Son action est egalement associee a une diminution de la concentration intracellulaire de glutathion et des thiols proteiques. La differenciation des cellules par le bfgf ou leur traitement par des donneurs de groupements thiols entraine une diminution de leur sensibilite au peroxyde. L'ensemble de ces resultats suggere l'importance de groupements thiols specifiques dont l'oxydation pourrait controler les fonctions mitochondriales

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Bayle, Jérôme. "Etude du contact gaz-solide dans un reacteur a co-courant descendant par la mise en oeuvre du craquage catalytique du cumene." Paris 6, 1996. http://www.theses.fr/1996PA066815.

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Les dernieres innovations du procede de craquage catalytique visent a optimiser le melange initial de la charge et du catalyseur et a reduire le temps de contact gaz-solide afin d'exploiter au mieux l'activite des nouveaux catalyseurs disponibles. Le downer dans lequel charge et catalyseur s'ecoulent a co-courant descendant devrait permettre de severiser davantage les conditions operatoires par rapport au mode d'ecoulement ascendant tout en maximisant conversion et selectivite en produits intermediaires recherches. Reste a demontrer l'efficacite du contact gaz-solide dans ce nouveau procede. Le probleme est delicat car le catalyseur et le gaz sont tous les deux en mouvement. Le recours a une reaction test, le craquage catalytique du cumene, permet d'apprecier efficacement le contact gaz-solide. Le cumene est une charge legere, ce qui elimine les problemes potentiels de vaporisation. Sa cinetique peut etre obtenue independamment sur lit fixe. L'importance de la trempe et d'une separation ultra-rapide des reactifs en sortie du downer fut mise en evidence. Des conditions operatoires assez severes en terme de temperature (550c) et de rapport massique catalyseur/charge (25/1) furent necessaires a l'obtention de conversions significatives. La desactivation du catalyseur induit un changement de selectivite avec le temps de contact a l'echelle de la seconde. Cet effet n'etait pas observable en lit fixe. Les donnees experimentales sont confrontees a un modele d'ecoulement piston monodimensionnel. La portee du modele est limitee du fait de la non prise en compte de la distribution granulometrique du catalyseur, des interactions solide-solide et des fluctuations de debits.

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Silva, Luciana Yumi Akisawa. "Determinação experimental e modelagem termodinamica de dados de equilíbrio de fases de misturas binarias e ternaria contendo acetona, agua e cumeno." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266953.

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Orientador: Maria Alvina Krahenbuhl
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
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Resumo: No projeto de processos de separação é essencial o conhecimento do comportamento das fases que estão em equilíbrio. O presente trabalho consistiu no estudo do equilíbrio de fases de misturas contendo acetona, água e cumeno. Estes componentes são de grande importância para a indústria do fenol. Os componentes água e cumeno são parcialmente miscíveis e na destilação da mistura de acetona, água e cumeno ocorre a formação de três fases (líquido-líquido-vapor), por isso é muito importante a determinação de um único conjunto de parâmetros dos modelos de GE que possa representar adequadamente o equilíbrio líquido-líquido simultaneamente. Determinou-se dados de equilíbrio líquido-vapor dos sistemas acetona + água,acetona + cumeno e acetona + água+ cumeno e dados de equilíbrio líquido-líquido do sistema água + cumeno a 760 mmHg. O Princípio da Máxima Verossimilhança foi utilizado no ajuste dos parâmetros de interação binária dos modelos NRTL e UNIQUAC.Os parâmetros obtidos neste trabalho foram comparados em trabalho anterior,Mafra (2005,) no qual se procedeu ao ajuste de dados ternários de equilíbrio líquido-líquido a 50 °C, e buscou-se o conjunto de parâmetros que melhor representa o equilíbrio líquido-vapor e líquido-líquido simultaneamente. Os resultados obtidos revelaram que o modelo NRTL com parâmetros determinados a partir de dados binários representa satisfatoriamente os equilíbrios líquido-vapor e líquido-líquido de sistemas binários e ternário envolvendo acetona, água e cumeno
Abstract: On projecting separation processes it is essential the knowledge of the behavior of the phases in equilibrium. The present work involved the study of the phase equilibrium of mixtures containing acetone, water and cumene, which are very important in the phenol industry. The components water and cumene are partially miscible, and in the distillation of the mixture of acetone, water and cumene occurs the simultaneous formation of three phases, two liquids and one vapor. In such a way this it is important the determination of only one set of parameters for GE models that can represent appropriately the vapor-liquid and liquid-liquid equilibrium. It has been determined vapor-liquid equilibrium data of acetone + water, acetone + cumene and acetone + water -"o cumene systems and liquid-liquid equilibrium data of water + cumene system at 760 mmHg. The Maximum Likelihood Principle was used for the estimation of the interaction parameters for the NRTL and UNIQUAC models. The parameters obtained in this work were compared with the parameters found by Mafra (2005). who realized the reduction of ternary liquid-liquid equilibrium data at 50°C. and it has been analyzed which set of parameters gives the best representation of the vapor-liquid and the liquid-liquid equilibrium simultaneously. The results have shown that the NRTL model with parameters determined by binary data represents properly the vapor-liquid and liquid-liquid equilibrium of binary and ternary systems containing acetone, water and cumene
Mestrado
Desenvolvimento de Processos Químicos
Mestre em Engenharia Química

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Camarasa, Eric. "Étude hydrodynamique et modélisation des réacteurs à gazosiphon d'oxydation du cumène." Vandoeuvre-les-Nancy, INPL, 2000. http://www.theses.fr/2000INPLA001.

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Un modèle général prédisant le comportement des réacteurs à gazospiphon d'oxydation du cumène a été développé. Le modèle inclut la cinétique de la réaction, le transfert de matière et l'hydrodynamique. Le modèle du film a été choisi afin de tenir compte d'une éventuelle accélération du flux d'absorption de l'oxygènee. La configuration de l'écoulement a été prise en compte et un modèle de cellules est utilisé pour décrire l'état de mélange des phases liquide et gaz. Les paramètres hdrodynamiques que sont le taux de vide et la vitesse de circulation du liquide, sont calculés avfec un modèle approprié qui repose sur des équations de bilan de forces et qui est ajusté au système industriel à l'aide de données expérimentales. L'étude expérimentale, faisant intervenir de nombreuses techniques de mesure, a été réalisée sur divers réacteurs (une colonne à bulles simple et trois réacteurs à gazosiphon) équipés avec différents distributeurs de gaz et en utilisant de l'eau, des solutions aqueuses alcooliques et le mélange organique industriel comme phases liquides. Une meilleure compréhension de l'influence des propriétés du liquide (en particulier le comportement coalescent) et de la distribution gazeuse sur l'hydrodynamique y compris les caractéristiques des bulles a été obtenue. Les régimes d'écoulement et les transitions de régime ont également été analysés avec différentes techniques de traitement de signal appliquées aux flucturations de pression. Finalement, le modèle général prédit les variations des concentrations et des paramètres hydrodynamiques le long du réacteur, il est ainsi capable de fournir une bonne description des réacteurs d'oxydation étudiés. L'analyse de sensibilité des paramètres et l'incorporation du modèle dans une procédure d'optimisation permettent d'aboutir à un certain nombre de règles de dimensionnement et de conduite des oxydeurs de cumène
A complete model for prediction of cumene oxidation air-Iift reactors has been developed. The model includes reaction kinetics, mass transfer and hydrodynamics. The film model has been chosen to account for an eventual enhancement of the oxygen absorption rate. The flow configuration has been taken into account and the cell model approach is used to describe the liquid and gas phase mixing behavior. Hydrodynamic parameters as the gas hold-up and the liquid circulation velocity, are calculated with an adequate model based on momentum balance equations and adjusted to the industrial system with experimental data. Experimental work involving numerous measuring techniques has been conducted in several reactors (one simple bubble column and three air-lift reactors) equipped with different gas distributors and using water, water-alcohol solutions and the industrial organic mixture as the liquid phase. A better understanding of the influence of liquid properties (particularly the coalescing behavior) and of the gas distribution on bubble and hydrodynamic characteristics has been obtained. Flow regimes and regime transitions have also been examined using different techniques of signal analysis applied to pressure fluctuations. Finally, the complete model predicts the variations of concentration and hydrodynamic parameters along the reactor and so is able to provide a good description of the cumene oxidation reactors. By performing parameter sensitivity analysis and by incorporating the model into an optimization procedure, guidelines for design, operation and scale-up of such reactors are proposed

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Silva, Marciéli. "Propagação de jamboleiro [Syzygium cumini (L.) Skeels]." Universidade Tecnológica Federal do Paraná, 2017. http://repositorio.utfpr.edu.br/jspui/handle/1/2358.

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Syzygium cumini (L.) Skeels é espécie exótica nativa da Ásia, porém seu cultivo está espalhado em vários países, nos quais inclui-se o Brasil. Apesar de existir poucos plantios comerciais dessa fruteira, ela apresenta inúmeras possibilidades de uso, desde o mercado de frutas frescas até o processamento como compotas, licores, vinagre, geleias, tortas e doces. O objetivo deste trabalho foi testar técnicas de propagação visando obter protocolo apropriado para esta espécie. Os experimentos foram feitos no Laboratório de Fisiologia Vegetal e Unidade de Ensino e Pesquisa Viveiro de Produção de Mudas, da Universidade Tecnológica Federal do Paraná - Câmpus Dois Vizinhos. O armazenamento de sementes de jamboleiro foi realizado nos tempos de 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330 e 360 dias. O armazenamento seguido de hidrocondicionamento foi em temperatura de 25 °C por 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144 e 156 horas. Em ambos, percorrido cada período de tempo, as sementes foram postas para germinar e aos 60 dias avaliaram-se a porcentagem de germinação, índice de velocidade de germinação e tempo médio de germinação. Na mini-estaquia testou-se concentrações de ácido indol-butírico (AIB) (0, 2000, 3000 e 4000 mg.L-1) e tipo de estaca (Apical, mediana e basal). No experimento de estaquia testou-se concentrações de AIB (0, 5000 e 10000 mg.L-1) e concentrações de Benzilaminopurina (BAP) (0, 250 e 500 mg.L-1). No segundo experimento de estaquia testou-se técnicas de condicionamento (Ttestemunha, anelamento e alumínio), tempo de condicionamento (40, 60, 80 e 100 dias) e concentrações de AIB (0, 2000 e 4000 mg.L-1). Na alporquia foram empregados tipos de revestimento (papel transparente, papel alumino e plástico preto), concentrações de AIB (0, 2000 e 4000 mg.L-1), presença ou não de algodão e estações do ano. Tanto para mini-estaca, estaquias e alporquia analisaram-se a porcentagem de enraizamento, número de raiz, comprimento das três maiores raízes e presença de calo para alporquia e estaquia. Para o jamboleiro recomendou-se o armazenamento seguido de hidrocondicionamento por até 156 horas, a mini-estaquia mediana e basal sem a aplicação de AIB. E a alporquia foi o método que mais se destacou com maiores valores de enraizamento.
Syzygium cumini (L.) Skeels is an exotic species native to Asia, but its is cultivated a lot of countries, including Brazil. Although there are few commercial plantations of this fruit tree, it has many possibilities of commercialization, market of fresh fruits to processing such as jams, liqueurs, vinegar, jellies, pies and sweets. The objective of the work was to test propagation techniques in order to obtain an appropriate protocol for this species. The experiments were carried out in the Laboratory of Plant Physiology and Unit of Teaching and Research Nursery, at Federal Technological University of Paraná - Câmpus Dois Vizinhos. The storage of S. cumini seeds was during 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360 days. The storage followed by hydrocondicionamento in temperature of 25 °C during 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 120, 132, 144 and 156 hours. The germination percentage, germination speed index and average germination time after 60 days were evaluated, according each time. In the mini-cuttings, indole-butyric acid (IBA) concentrations (0, 2000, 3000, 4000 mg.L-1) and type of cuttings (apical, middle and basal) were tested. In the cutting experiment, IBA concentrations (0, 5000, 10000 mg.L-1) and Benzylaminopurine (BAP) concentrations (0, 250 and 500 mgL-1) were evaluated. In the second cutting experiment, conditioning techniques (control, ringing and etiolation), conditioning time (40, 60, 80 and 100 days) and IBA concentrations (0, 2000, 4000 mg.L-1) were tested. In the air layering we used types of coating (withoutcolor plastic, aluminum paper and black plastic), IBA concentrations (0, 2000 and 4000 mg.L-1), presence or not of cotton and seasons of the year. In order to evaluate the percentage of rooting, root number, length of the three largest roots, and presence of callus by cuttingFor the S. cumini it was recommended the storage followed by hydrocondicionamento for up to 156 hours, the use of middle and basal minicuttings without the IBA application. The air layering was the technique propagation that it was possible higher rooting values.

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Gonzalez, Norris Jose A. "Copenhague: la cumbre que no podia fracasar." Politai, 2010. http://repositorio.pucp.edu.pe/index/handle/123456789/91638.

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Un accidentado camino se ha recorrido desde la firma del Protocolo de Kyoto. La proximidad de su término, la alarmanterealidad del cambio climático y fracasadas experiencias prepa-ratorias, condujeron a que la cumbre de Copenhague reunieralas expectativas de una creciente comunidad internacional cada día más ansiosa por medidas de carácter vinculante, más enérgicas y responsables sobre este evento de significativatrascendencia para el futuro de la humanidad. Pero, más allá delas esperanzas y el millonario despliegue organizado por laConvención Marco de Naciones Unidas sobre el Cambio Climático, la cumbre reveló que en el juego, las agendas y prioridades de algunos importantes actores trascienden la voluntad de muchosotros. El presente artículo presenta una mirada al interior de la conferencia realizada en la capital danesa, ilustrando la posición peruana y señalando algunos comentarios finales.

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Ciotola, Antonella. "Produzione e circolazione della ceramica comune nei Campi Flegrei in età romana : un campione dal Foro di Cuma." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEP027.

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Cette étude analyse les céramiques communes romaines provenant de la cité de Cumes (Naples, Campanie) sur un arc temporel très étendu, depuis le IIe siècle av. J.-C. jusqu’à l’abandon du site durant l’Antiquité tardive. Après avoir examiné les données disponibles sur la production et la circulation des céramiques dans cette région de la baie de Naples, on analyse les mobiliers inédits des fouilles dans le forum, conduites par l’Università degli Studi di Napoli « Federico II », dans le cadre du projet Kyme, un programme de recherche et de mise en valeur des vestiges de la ville antique avec la participation de deux universités napolitaines et du Centre Jean Bérard (CNRS). Les données recueillies sur le site par les diverses équipes clarifient le rôle de Cumes comme centre de production céramique. Certaines céramiques communes fabriquées par les potiers de la ville connaissent une très large diffusion et sont parmi les productions les mieux attestées dans tout l’Empire romain: c’est le cas de la céramique dite à engobe rouge pompéien (ceramica a vernice rossa interna, Pompeian Red Ware o Pompejanisch-rote Platte). Les caractéristiques spécifiques du site et de l’assemblage de céramique commune étudié ont encouragé à adopter pour ce travail un système de classification différent de celui utilisé pour les productions communes de la Campanie jusqu'à présent. Chaque type est illustré analytiquement, avec le support d’une large documentation graphique et, dans la plupart des cas, des données fournies par l’étude des lames minces. L’examen des mobiliers provenant des fouilles du forum de Cumes et le réexamen des vases attestés dans la ville et en dehors du site, ont permis la révision des connaissances antérieures sur la production et la chronologie des types, en les confirmant ou en les modifiant. La documentation recueillie permet de dégager le cadre complexe de la production de céramique commune à Cumes. En outre, l’étude des importations a fourni nouveaux éléments sur les échanges commerciaux atteignant le site et la région phlégréenne, très influencés par la présence du port de Puteoli, porte de Rome sur les provinces de l’Afrique e de l’Orient. En examinant les variations du répertoire des formes représentées et les pourcentages des céramiques communes locales par rapport aux autres productions de l’Empire au cours des siècles, il a été possible d’observer des changements dans les flux commerciaux et dans les habitudes des individus. Il s’agit d’élever le regard des objets quotidiens pour atteindre les changements sociaux et économiques intéressant le site et le Champs Phlégréens entre le Haut Empire et l’Antiquité tardive
This study analyzes Roman Coarse Wares from the city of Cumae (Naples, Campania), over an extended period, from the II century B.C. to the abandonment of the site in the late Antiquity. After examining the available data on pottery production and circulation in this area of the bay of Naples, the unpublished assemblages from the forum are analysed. These contexts were found during the excavations carried out by the Università degli Studi di Napoli “Federico II”, in the framework of the Kyme Project, in which two Neapolitan universities and the Centre Jean Bérard (CNRS) are involved to promote the research and the valorisation of the ancient city. New data sets collected by these different teams highlight the role of Cumae in pottery production. Some coarse wares produced in Cumae were widely traded across the entire Roman Empire, in particular the so called Pompeian Red Ware (ceramica a vernice rossa interna, céramique à engobe rouge pompéien or Pompejanisch-rote Platte). The characteristics of the site and of the coarse ware assemblages led to the adoption of a classification system fundamentally different from those used in studies on Coarse Wares made in Campania until now. Every type of pottery is analytically described and illustrated, with profile drawings and, in most cases, with the support of data provided by thin-section study. The examination of Coarse Wares discovered in the excavations of the forum of Cumae and the re-examination of available documentation about Coarse Wares finds from the city and elsewhere, leads to review our previous knowledge about the chronology of each type and production, confirming or modifying them. The collected documentation allows us to reconstruct the framework of Coarse Wares production in Cumae. Furthermore, the study of imported Coarse Wares from the forum of Cumae provided new clues for reconstructing trade evolutions in the city and in the Phlegraean Fields, strongly influenced by the vicinity of the port of Puteoli, gateway of the Roman provinces of Africa and the Eastern Mediterranean. Examining forms evolutions and their percentage of the local and imported production through centuries, we observe changes in trade and in individuals habits and how everyday objects give insights on social and economical changes at Cumae and in the Phlegraean Fields during the Early Roman Empire and the late Antiquity

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Lemaire, Bastien. "Aux marges de la ville antique en Méditerranée occidentale, de l’urbain au périurbain : de l'approche diachronique à l'étude de cas campaniens, Cumes et Pompéi." Thesis, Montpellier 3, 2017. http://www.theses.fr/2017MON30034.

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Les espaces de la Cité antique sont définis par la traditionnelle dichotomie opposant intérieur et extérieur, ville et campagne. Le travail présenté ici s’intéresse à l’ensemble formé par la ville et ses espaces périurbains en Méditerranée occidentale, dans le but de réviser notre vision du fait urbain antique. L’évolution récente de la recherche et le développement des études périurbaines tendent à considérer les marges urbaines comme un tissu conjonctif entre la cité et son territoire rural. Par la diversité des exemples présentés et les fenêtres d’étude de Cumes et de Pompéi, nous tentons d’identifier les processus de croissance ou de régression de ces espaces, leurs éléments constitutifs et leurs relations avec la cité ainsi que leurs aspects spatiaux, religieux, économiques et sociaux. Sans remettre en question le rôle central de la ville, nous soulignons les imbrications et les complémentarités existant entre ces divers composants des agglomérations antiques. La démarche historiographique, diachronique et comparatiste, complétée par deux études inédites de terrain à Cumes et à Pompéi, vise à définir les limites urbaines, les fonctions périurbaines, les zones de contrôle, d’influence et d’exclusion et les interdépendances dans une dynamique montrant les pulsations à l’œuvre dans l’ensemble composé par la ville antique et ses périphéries sur la longue durée
The areas of the ancient City are defined by the traditional dichotomy opposing inside and outside, city and countryside. This work studies the couple formed by the city and its periurban spaces in the western Mediterranean, in order to revise our vision of the ancient urban fact. The recent evolution of research on this topic and the development of peri-urban studies tend to consider urban margins as a connective tissue between the city and its rural territory. Through the diversity of the examples analyzed and through the case studies of Cumae and Pompeii, we try to identify the processes of growth and/or regression of these areas, their constituent elements and their relationships with the city as well as their spatial religious, economic and social aspects. Without challenging the central role of the city, we emphasize the interlinkages and complementarities between the main components of the ancient agglomerations: centre, periphery and countryside. The historiographic, diachronic and comparative approach, completed by two unpublished archaeological excavations at Cumae and Pompeii, aims to define urban boundaries, periurban functions, zones of control, influence and exclusion as well as interdependencies in a dynamics showing the historical pulsations of the couple formed by the ancient city and its peripheries over the longue durée

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Sha, Wei. "Microarray data analysis methods and their applications to gene expression data analysis for Saccharomyces cerevisiae under oxidative stress." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/27840.

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Oxidative stress is a harmful condition in a cell, tissue, or organ, caused by an imbalance between reactive oxygen species or other oxidants and the capacity of antioxidant defense systems to remove them. These oxidants cause wide-ranging damage to macromolecules, including proteins, lipids, DNA and carbohydrates. Oxidative stress is an important pathophysiologic component of a number of diseases, such as Alzheimerâ s disease, diabetes and certain cancers. Cells contain effective defense mechanisms to respond to oxidative stress. Despite much accumulated knowledge about these responses, their kinetics, especially the kinetics of early responses is still not clearly understood. The Yap1 transcription factor is crucial for the normal response to a variety of stress conditions including oxidative stress. Previous studies on Yap1 regulation started to measure gene expression profile at least 20 minutes after the induction of oxidative stress. Genes and pathways regulated by Yap1 in early oxidative stress response (within 20 minutes) were not identified in these studies. Here we study the kinetics of early oxidative stress response induced by the cumene hydroperoxide (CHP) in Saccharomyces cerevisiae wild type and yap1 mutant. Gene expression profiles after exposure to CHP were obtained in controlled conditions using Affymetrix Yeast Genome S98 arrays. The oxidative stress response was measured at 8 time points along 120 minutes after the addition of CHP, with the earliest time point at 3 minute after the exposure. Statistical analysis methods, including ANOVA, k-means clustering analysis, and pathway analysis were used to analyze the data. The results from this study provide a dynamic resolution of the oxidative stress responses in S. cerevisiae, and contribute to a richer understanding of the antioxidant defense systems. It also provides a global view of the roles that Yap1 plays under normal and oxidative stress conditions.
Ph. D.

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Kilby, Richard James. "Synthesis and reactivity of diruthenium Î¼-cumulene complexes." Thesis, University of Bristol, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.409316.

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Bezerra, Maria Helena Bertolini. "Formação do leitor: a escola cumpre a tarefa?" Pontifícia Universidade Católica de São Paulo, 2009. https://tede2.pucsp.br/handle/handle/10713.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Does the school form or shape the reader? To answer the question, this research carried out from 2006 took as its principal object of analysis the school actions of the teachers of the municipal Basic school "Cândido Portinari", located in Perus, São Paulo, in the Basic Teaching I, having in mind to apprehend if the development of several schools activities in the multiple spaces of realization of the classrooms, indicates, effectively the process of constitution of the reader. The observation that the school "educates" the reading, - understood as a bad characteristic - checked in many people, is debated about the formation of the school reader, it was taken like counterpoint, since it was looked to understand the actions of the agents: teachers, advisors, coordinators, etc. as marked by socially and historically constituted ways, defining the school culture, in which the teaching of the reading and of the writing appears among the principal acquisitions of the pupils, specially for those of Basic Teaching. There was linked the approach done to the practices of the Ethnomethodolgy research, in what the researcher looks at the analysis of the action of the agents, the explanations on the made choices. Considering, in this way, for analysis of the obtained data, the discussions carried out by the sociology of education in which the reading and the writing turn up as defining of the specific way of socialization of the modern societies, being the school, modern institution par excellence, the main way to the constitution of the reader. In this way, authors as Bourdieu; Guy Vincent, Lahire, Daniel Thin; Anne Marie Chartier and Gimeno Sacristán were taken specially, because their researches supplied elements that allowed us to understand that the school does not form another subject except the reader, since everything they do privileges the writing way of communication. In the mean time, it is needed to think about the entire reader, that one who affords, foremost from the infinity of texts that socially circulates, comprehend what was read, establishing the most varied feasible relationships and more, that the reading becomes acquired and cultivated customary behavior from school, especially for the children who do not have access to this cultural property within the familiar atmosphere. The school, which actions are marked by changes, but, especially by permanencies, develops actions that mark an insufficient acquisition of the skills of reading, that because, while carrying out daily actions of reading, it educates them and the understandings of the agents, constituted from the interlacement of several aspects, they appear linked to the practice that privileges the formal written one
A escola forma ou enforma o leitor? Para responder à pergunta, esta pesquisa, realizada a partir de 2006 tomou como principal objeto de análise as ações escolares dos professores da Escola Municipal de Ensino Fundamental Cândido Portinari , localizada em Perus, São Paulo, no Ensino Fundamental I, tendo em vista apreender se o desenvolvimento das diversas atividades escolares nos múltiplos espaços de realização das aulas indica efetivamente o processo de constituição do leitor. A constatação de que a escola escolariza a leitura, - entendida como uma característica ruim - verificada nos diversos debates acerca da formação do leitor escolar, foi tomada como contraponto, pois se buscou entender as ações dos agentes: professores, orientadores, coordenadores, etc. como marcadas por modos constituídos social e historicamente, configurando a cultura escolar, em que o ensino da leitura e da escrita figuram entre as principais aquisições dos alunos, especialmente para os de Ensino Fundamental. Vinculou-se a abordagem feita às práticas da pesquisa etnometodológica, em que o pesquisador procura na análise da ação dos agentes, as explicações sobre as escolhas feitas. Considerou-se, desse modo, para análise dos dados obtidos, as discussões realizadas pela Sociologia da Educação em que a leitura e a escrita aparecem como definidoras do modo especifico de socialização das sociedades modernas, sendo a escola, instituição moderna por excelência, o principal meio para constituição do leitor. Desse modo, autores como Bourdieu; Guy Vincent, Lahire, Daniel Thin; Anne Marie Chartier e Gimeno Sacristán foram tomados especialmente, pois com seus estudos forneceram elementos que permitiram compreender que a escola não forma outro sujeito senão o leitor, visto que tudo o que faz privilegia o modo escritural de comunicação. Entretanto, é preciso pensar no leitor pleno, aquele que consegue, diante da infinidade de textos que circulam socialmente, compreender o que leu, estabelecendo as mais variadas relações possíveis e ainda, que a leitura seja um hábito adquirido e cultivado a partir da escola, especialmente para as crianças que não têm acesso a esse bem cultural no meio familiar. A escola, cujas ações são marcadas por mudanças, mas, sobretudo por permanências, desenvolve ações que marcam uma aquisição insuficiente das habilidades de leitura, isso porque, ao realizar ações cotidianas de leitura, escolariza-as e os entendimentos dos agentes, constituídos a partir do entrelaçamento de vários aspectos, se mostram vinculados a práticas que privilegiam o escrito formalizado

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Broglio, Maria Ignez. "Aquisição e tratamento de dados de equilibrio liquido-liquido-vapor do sistema acetona/agua/cumeno." [s.n.], 1995. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267356.

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Orientador: Saul Gonçalves D'Avila
Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica
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Résumé: L¿équilibre liquide-liquide-vapeur du système acetone/eau/cumène a eté étudié avec les donnés ternaire liquide-liquide, líquide-vapeur et liquid-liquid-vapeur, quiont eté determinées entre 50 et ¿70 GRAUS¿C. Les donnés d¿équilibre liquide-liquide ont été obtenues dans de cellules isothermiques et les pressions totales versus teneurs de la phase liquide ont été mésuré avec l¿isoténiscope. Les parameters du modèle NRTL/Hayden P¿Connell ont été ajustés statistiquement par une combinaison de donnés experimentales et de donnés binaries de la literarure. Quelques jeus de paramètres du système acetone/eau/cumène ont été utilisés pour simuler une colonne de séparation d¿acetóne dans un système acetone, l¿eau, cumène, alpha-methylestirene et phenol. Les meilleurs resultants de la simulation ont été obtenus par le biais des parameters du système acetone/eau/cumène liquide-liquide ternaire, exclusivement. Les simulations ont été effectué avec le simulateur Aspen Plus
Resumo: O equilíbrio líquido-líquido-vapor da mistura acetona/água/cumeno foi estudado a partir de dados de equilíbrio líquido-líquido, líquido-vapor e líquido-líquido-vapor do sistema ternário, determinados na faixa de 50 a ¿70 GRAUS¿C. Os dados de equilíbrio líquido-líquido foram obtidos em células de equilíbrio isotérmicas e os dados de pressão total versus composição da fase líquida foram medidos em um isoteniscópio. Parâmetros do modelo NRTL/Hayden O¿Connell foram conseguidos por ajustes estáticos combinando os dados experimentais obtidos com outros dados binários da literatura. Os vários conjuntos de parâmetros do sistema acetona/água/cumeno foram empregados na simulação de uma coluna de separação de acetona envolvendo os componentes acetona, água, cumeno, alfametilestireno e fenol. Os melhores resultados da simulação foram conseguidos com os parâmetros da mistura acetona/água/cumeno oriundos de dados ternários líquido-líquido exclusivamente. As simulações foram efetuadas pelo simulador Aspen 'Plus POT. TM¿
Abstract: Acetone/water/cumene vapor-liquid-liquid equilibria has studied form liquid-liquid, liquid-vapor and liquid-liquid-vapor ternary equilibria data, which were mesured to temperature range 50 ¿ ¿70 GRAUS¿C. Liquid-liquid equilibria data were isothermic equilibria cells and total pressure versus liquid phase composition have measured with a static equilibria cell. NRTL/Hayden O¿Connell parameters were tuned statistically considering experimental data from this work and binary data from literature. Some parameter sets for the system acetone/water/cumene were used in acetone separation column distillation simulation. Others components as alfamethylstirene and phenol were involved in simulations. Best results from simulation was obtained with acetone/water/cumene system parameters which area gotten from exclusive liquid-liquid ternary data. All simulations were done by Aspen Plus Simulator
Mestrado
Desenvolvimento de Processos Químicos
Mestre em Engenharia Química

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Zebib, Bachar. "Les phyllosilicates de sodium délaminés : une nouvelle voie pour la fabrication des supports catalytiques acides." Paris 6, 2006. http://www.theses.fr/2006PA066492.

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Des phyllosilicates lamellaires bien cristallisés de type magadiite ont été synthétisés sous leur forme sodique purement silicique, et avec un rapport Si/Al=30. Ensuite, Ils ont subi une procédure de délamination, constituée i) d’un gonflement avec le CTMA+ en présence du TPAOH, ii) d’une sonication, et enfin iii) d’une calcination à 700°C afin d’éliminer les produits organiques. Le solide aluminosilicique délaminé obtenu, est caractérisé après les différentes étapes successives de cette procédure, par DRX, RMN 27Al et 29Si, spectroscopie IR, microscopie électronique, et physisorption de N2. Le matériau délaminé obtenu est composés des feuillets séparées chiffonnées, et a une large superficie (500-600 m2/g) accompagnée d’une large gamme de porosité (> 30Å). Tandis que la RMN 29Si indiquait une certaine perte d’ordre structural, l’IR a suggérée la conservation de la structure locale des feuillets (cycles à cinq TO4) après délamination. En RMN 27Al, la magadiite Al-délaminée montrent un pic unique à +52ppm, témoignant la coordination tétraédrique d’Al. L’acidité de ce matériau a été évaluée par adsorption du CO à basse température. Cette technique a indiqué la présence des centres acides forts (OH= 312cm-1), dont le comportement est semblable à celui des hydroxyles pontés Si-OH-Al d’une zéolite pentasil. En conclusion, l’activité catalytique a été évaluée par le test de cumène, qui montre une activité catalytique élevée (82% de conversion), atteignant le même niveau que celles des meilleurs supports zéolitiques disponibles.

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Ruggiero, Andrea de Andrade. "Estudo farmacognóstico do jambolão Syzygium cumini (L.) Skeels Myrtaceae." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/9/9138/tde-27022015-095201/.

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Syzygium cumini (L.) Skeels (Myrtaceae) encontra uso na medicina tradicional como hipoglicemiante. Folhas mostram emprego adicional , no tratamento de úlceras pépticas, diarréias e hemorróidas. A dissertação apresenta descrições macro e microscópicas das folhas, acompanhadas de fotografias. Teores de flavonóides, saponinas e taninos foram determinados no extrato hidroetanólico liofilizado e na droga coletada no verão e outono. O óleo volátil foi analisado. O extrato foi avaliado quanto à atividade antimicrobiana, antioxidante e toxicidade aguda. Os flavonóides (0,53%-0,62%), saponinas (4,22%-8,64%) e taninos (3,47-4,15%) apresentaram teores elevados no outono. No extrato, teores de flavonóides: saponinas e taninos foram de 2,19%, 10,92% e 13.97%, respectivamente.α-pineno, α-terpineol, β-pineno e limoneno foram os componentes majoritários do óleo. O extrato não revelou sinais de toxicidade aguda, e não apresentou atividade contra bactérias e fungos até 1.000µ-g/mL. O extrato apresentou atividade antioxidante. Os dados obtidos contribuem para melhor conhecimento da espécie e no controle de qualidade.
Syzygium cumini (L.) Skeels (Myrtaceae) is a hipoglycemic in folk medicine. Its leaves are also used as anti-ulcer, anti-diarrheic and antihemorrhoid. This work brings macro and microscopic descriptions of the leaves, with photos. Flavonoids, saponins and tannins contents were determinated in the liophylizated hydroethanolic extract and in the drug collected in summer and falI. The volatile oil was analysed. The antimicrobial and antioxidant activities and the acute toxicity were avaliated . The flavonoids (0.53%-0.62%), saponins (4 .22%-8.64%) and tannins (3.47%-4-15%) showed their highest values in the fall sample. The contents of flavonoids, saponins and tannins in the extract were, 2.19%, 10.92% and 13.97%, respectively. α-pinene, α-terpineol, β and limonene were the major constituents of the oil. The extract showed no signs of acute toxicity nor was it active against bacteria and funghi up to 1,000µg/mL . The extract showed antioxidant activity. These data contribute for a better knowledge of the specie and quality control.

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Barcia, Milene Teixeira. "Composição centesimal e de fitoquímicos em jambolão (Syzygium cumini)." Universidade Federal de Pelotas, 2009. http://repositorio.ufpel.edu.br/handle/ri/1306.

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The jambolanum is a tree originating from India and Indonesia, belonging to the family of Mirtaceas. The tree bears fruit during January to May in several Brazilian states. The fruit are small, purpleand involves a single core. The taste of jambolanum not stand out so much because the astringency of the fruit. The consumption of tropical fruit is growing in the last years due to the appeal of nutritional and therapeutic effects. These fruits contain different phytochemicals, many of these exhibit antioxidant properties, especially the tocopherols, carotenoids and phenolic compounds, because its property of reacting with free radicals. Among the phenolic compounds there are the flavonoids that chemically, include anthocyanins and flavonols. Practically do not know the chemical composition of jambolanum because; therefore, the knowledge of some of its components is important to predict the feasibility of their use as in natura foods and as raw material for the production of other products. This study aimed to evaluate the chemical composition of the fruits of jambolanum collected from three cities in the southern state of RS. The experiment consists of three trees in three different cities of the southern of RS(Santa Vitória do Palmar, Pelotas and Capão of Leão), and its was analyzed for chemical and phytochemical compositiont.By the results it was found that the jambolanum fruit shows the chemical composition similar to other fruits, presenting low amount of ash, proteins, pectin and fiber. The moistureand sugar content and pH is characteristic of citrus fruit; however, the fruit showed higher soluble solids content. The Jambolanum fruit presents low tocopherols and ascorbic acid content, but it showed a high content of tannins and phenol compounds.
O jambolão é uma árvore originária da Índia e Indonésia, pertencente à família das Mirtáceas. Frutifica nos meses de janeiro a maio, em diversos estados do Brasil. Os frutos são pequenos, de coloração roxa e envolve um caroço único. O sabor do jambolão não se destaca muito devido a adstringência da fruta. O consumo de frutas tropicais vem aumentando nos últimos anos devido ao apelo pelo seu valor nutritivo e aos efeitos terapêuticos. Estas frutas contêm diferentes fitoquímicos, muitos destes exibem propriedades antioxidantes, com destaque para os tocoferóis, carotenóides e compostos fenólicos, devido suas propriedades de reagir com os radicais livres presentes. Dentre os compostos fenólicos destacam-se os flavonóides que quimicamente, englobam as antocianinas e os flavonóis. Praticamente não se conhece a composição química do jambolão, devido a isto, o conhecimento de alguns de seus componentes se faz importante, para prever a viabilidade de sua utilização como alimento in natura e como matéria prima para a elaboração de outros produtos. Este estudo apresentou como objetivo avaliar a composição química das frutas de jambolão colhidas de diferentes plantas de três cidades da Região Sul do estado do RS. O experimento consta de frutas oriundas de três árvores distintas em três cidades do Sul do estado (Santa Vitória do Palmar, Pelotas e Capão do Leão), sendo avaliadas quanto a composição química e ao teor de fitoquímicos. Pelos resultados observa-se que o jambolão apresenta composição química similar a outras frutas características da região, apresentando baixo conteúdo em cinzas, proteínas, pectina e de fibras. O teor de umidade, açúcares e pH é característico de frutas cítricas, no entanto, com um teor superior em sólidos solúveis. A fruta apresenta baixo conteúdo em tocoferóis e ácido ascórbico, porém apresenta um alto teor de taninos e de compostos fenólicos.

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Garcia, Garcia Sonia. "L'imprimerie au Venezuala, XIXe siècle : le cas de Cumana." Bordeaux 3, 1990. https://extranet.u-bordeaux-montaigne.fr/memoires/diffusion.php?nnt=1990BOR30063.

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CORRÊA, Roberto Carlos. "Síntese e caracterizações elétrica e magnética da ferrita de CuMnFe." reponame:Repositório Institucional da UNIFEI, 2014. http://repositorio.unifei.edu.br:8080/xmlui/handle/123456789/370.

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Cerâmicas avançadas desempenham um papel relevante nas áreas científica e tecnológica. Dentre as áreas de aplicações, destaca-se a bioengenharia por meio de aplicativos do dispositivo biossensor e o transporte de fármacos específicos, devido a seu comportamento magnético. As ferritas pertencem a uma classe abundante das cerâmicas magnéticas, sendo óxidos que contém hematita (Fe₂O₃) como componente principal. As amostras com estequiometria Cu₁₋ₓMnₓFe₂O₄, foram preparadas pelo método cerâmico convencional e foram relacionados os comportamentos magnético e elétrico com a sua estrutura. A fase encontrada da ferrita de cobre-manganês foi a estrutura cúbica de espinélio. As ferritas de cobre-manganês exibiram comportamento isolante e/ou semicondutor através do modelo de condução por ativação por bandas. As cerâmicas apresentaram características de um material magneticamente mole. A amostra com teor de manganês de 0,4g/mol exibiu propriedades de um material com futuro potencial para aplicação em transporte de fármacos devido ao seu comportamento magnético.

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AMÉRICO, Gilciane Vergolino. "Otimização da pasteurização da polpa de jambolão (Syzygium cumini lamarck)." Universidade Federal do Pará, 2014. http://repositorio.ufpa.br/jspui/handle/2011/8962.

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CNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
Os frutos de Syzygium cumini Lamarck, conhecido popularmente como jambolão, são fontes de antocianinas e antioxidantes. Este estudo teve como objetivo otimizar a pasteurização na polpa de jambolão, visando a inativação enzimática, a retenção dos compostos bioativos e da atividade antioxidante. Foram realizadas analises físicas do fruto de jambolão: comprimento transversal (2,49 cm), comprimento longitudinal (1,68 cm) e rendimento percentual (57,22 %); e físico-químicas da polpa de jambolão: umidade (89,43 %) cinzas (0,27 %), lipídios (0,23 %), proteínas (0,72 %), acidez (5,99 % ac. cítrico), sólidos solúveis (9,17 °Brix), pH (3,34), fenólicos totais (182,01 mgEAG.100g-1), antocianinas totais (93,56 mg.100g-1) e atividade antioxidante pelo método DPPH (EC50=4.552,26 g/gDPPH) e ABTS (18,48 μMTrolox/g). Devido à resistência ao escoamento apresentada pela polpa de jambolão nas tubulações do pasteurizador, a polpa foi diluída e enquadrada na legislação vigente (Brasil, 2003) para suco tropical. Para o processo de pasteurização no suco tropical de jambolão foi utilizado um planejamento composto central (2²), adotadas como variáveis independentes: temperatura (°C) e tempo (s); e como variáveis de respostas: fenólicos totais, antocianinas totais, atividade antioxidante (DPPH e ABTS) e atividade enzimática (POD e PFO). Houve a completa inativação das enzimas no suco tropical de jambolão pasteurizado, exceto no tratamento com 85°C/39s para atividade da POD. As variáveis independentes e a interação das mesmas não influenciaram de maneira significativa ao nível de 95% de confiança os resultados obtidos para geração de modelos preditivos das características avaliadas, com exceção para o teor de fenólicos totais. A melhor condição para obter a máxima retenção dos compostos analisados e a completa inativação das enzimas foi 92°C/ 70s no suco tropical de jambolão pasteurizado.
The Syzygium cumini Lamarck fruits, popular known as jambolan, are a source of anthocyanin and antioxidant. This study aimed to optimize the thermic pasteurization of the jambolan pulp, with the purpose to inactivate the enzymes, the bioactive compounds and the antioxidant activity retention. Physical analyses: transverse length (2,49cm), longitudinal length (1,68cm) and percent yield (57,22%); and physicochemical: moisture (89.43%) ash (0.27%), lipid (0.23%), protein (0.72%), acidity (5.99% citric ac.), soluble solids (9,17 ° Brix), pH (3.34), total phenolic (182.01 mgGAE.100g-1), total anthocyanin (93.56 mg.100g-1) and antioxidant activity by DPPH method (EC50 = 4552.26 g / gDPPH) and ABTS (18,48 μMTrolox / g) were performed. Due to a resistance while trying to flow the jambolan pulp in the pasteurizer pipes, the pulp was diluted and complied with the national legislation (Brasil, 2003) for tropical juice. The methodology used was a central composite design (2²), using as independent variables: temperature (°C) and time (s), and as response variables: total phenolic compounds, total anthocyanin, antioxidant activity (DPPH and ABTS) and enzymatic activity (POD and PPO). The enzymes of the jambolan tropical juice were completely inactivated, except for POD in the test treated with 85ºC/39sec. The independent variables and the interaction of them didn’t influence significantly at 95% of confidence level in the results obtained to generate predictive models of the characteristics evaluated, except for the total phenolic content. The best condition to obtain a maximum retention of the compounds analyzed and the complete inactivation of the enzymes was the temperature 92ºC and time 70sec for tropical juice of jambolan which was pasteurized.

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Romero, Catalina. "La V Cumbre de la Iglesia Católica en América Latina." Pontificia Universidad Católica del Perú, 2007. http://repositorio.pucp.edu.pe/index/handle/123456789/47317.

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Formaggia, Luciana. "Plan de negocios de cervecería artesanal “Cumbre, refugio de amigos"." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Económicas, 2018. http://bdigital.uncu.edu.ar/15766.

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La realización de este proyecto surge como una idea personal de poder probar la rentabilidad de un bar de cervecería, ante el gran crecimiento en el campo de las cervezas artesanales dentro del territorio argentino. Buscando resultados positivos al entregarle al consumidor algo diferente. Que el mismo no solo elija el producto, sino una serie de factores que se combinan para que esa experiencia, sea única. Se procuró a lo largo de todo el trabajo de investigación destacar que la ventaja competitiva se encontrara en entregarle al cliente experiencias diferentes combinadas en un solo lugar. Para lograr lo antes mencionado se definieron objetivos, como hoja de ruta para alcanzar el fin del proyecto. Dentro de estos encontramos relevantes: analizar el entorno, una estratégica segmentación de mercado, detectar el potencial diferencial para dicho segmento e identificar necesidades operativas y financieras entre otros. Dicho plan de negocios estará dividido en V capítulos. Se comenzará introduciendo un marco teórico acerca de qué es un plan de negocios y qué busca el mismo. Luego se dividirá el estudio desarrollando una serie de v capítulos en los que se podrá observar el trípode de un plan de negocios; un análisis comercial, análisis operativo para finalizar un análisis financiero. Luego del análisis se logró probar la viabilidad del proyecto en estudio. La bibliografía que sustentará dicho trabajo fue extraída mayormente de libros utilizados durante el periodo universitario, páginas web, foros y blogs.
Fil: Formaggia, Luciana. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas.

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Fan, Zhi-Wei. "Induced resistance and its combination with a biocontrol fungus to protect sunflower (Helianthus annuus L.) against the root parasitic weed Orobanche cumana Wallr." Beuren Stuttgart Grauer, 2005. http://d-nb.info/989891291/04.

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Turatti, Ketylin Fernanda Migliato. "Syzygium cumini (L.) Skeels : avaliação da qualidade, estudo morfo-anatômico, estudo da atividade antimicrobiana, conservante, genotóxica, mutagênica, citotóxica e incorporação em formulações cosméticas para uso tópico /." Araraquara : [s.n.], 2008. http://hdl.handle.net/11449/100091.

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Resumo: A necessidade da introdução de novos princípios ativos naturais no arsenal farmacêutico e/ou cosmético tem sido pesquisado, devido ao aparecimento de formas bacterianas resistentes, decorrentes, principalmente, do uso indiscriminado de agentes antimicrobianos, que possam ser utilizados como anti-sépticos ou como conservantes de preparações farmacêuticas ou cosméticas. Dentro disto foi realizado o estudo da atividade antimicrobiana com o extrato seco dos frutos de Syzygium cumini (Myrtaceae), fundamentado com os usos populares descritos para este vegetal, popularmente conhecido, no Brasil, como jambolão, jamelão ou azeitona-roxa. Para garantir-se a autenticidade da droga vegetal, realizou-se estudo morfo-anatômico do material colhido. O extrato vegetal foi preparado pelo método da percolação, utilizando como solvente etanol: água (50:50). Após validação de metodologia para o doseamento do extrato, foram realizados ensaios de citotoxicidade, mutagenicidade, genotoxicidade, avaliação da atividade antimicrobiana e possível emprego como conservante após sua aplicação em preparações para uso externo: sabonete líquido, gel com polímero sintético e emulsão não-iônica. O estudo morfo-anatômico identificou glândulas secretoras de óleos essenciais, drusas e idioblastos tânicos, característicos da família Myrtaceae. O método espectrofotométrico foi validado para análise quantitativa do extrato produzido, garantindo confiabilidade aos resultados obtidos. O estudo de citotoxicidade apresentou índice de morte celular IC50 na concentração de 400,0 μg/mL do extrato de S. cumini. A freqüência de micronúcleos, em células da medula óssea de camundongos, não demonstrou efeito mutagênico em 24 e 48 horas após administração do extrato seco dos frutos de S. cumini.
Abstract: The need for introducing new active principles to the pharmaceutical and/or cosmetic arsenal has been researched, due to the surge of resistant bacterial forms, stemming basically from the indiscriminate use of antimicrobial agents. The interest in obtaining new material with antimicrobial activity that can be used as antiseptics or as preservatives for pharmaceutical or cosmetic preparations led to a study on antimicrobial activity with the dry extracts of the fruit from Syzygium cumini (Myrtaceae). Such an interest is directly related to the popular uses of this plant, popularly known in Brazil as jambolão, jamelão or black plum. To assure the authenticity of the vegetable drug, a morpho-anatomical study has been performed on the material collected. The extract was prepared by percolation method, using ethanol:water (50:50) as a solvent. After validating the methodology for determining dosage extract, tests have been performed for citotoxicity, mutagenicity, genotoxicity, evaluation of antimicrobial activity and possible use as a preservative after its application in preparations for external use: liquid soap, gel with synthetic polymer and non-ionic emulsion. The morpho-anatomical study identified secretion glands of essential oils, druses and tannic idioblasts, characteristic of the Myrtaceae family. The spectrophotometric method was validated for quantitative analysis of the extract produced. The citotocixity study showed a cell death index of IC50 in the concentration of 400.0 μg/mL of the S. cumini extract. The frequency of micronuclei, in bone marrow cells in mice, did not show mutagenicity effect at 24 and 48 hours after administration of dry extract of fruit from S. cumini. The test for micronucleus in T. pallida, performed for evaluation of the mutagenicity showed a mutagenic effect in the concentrations of 1250.0 and 2500.0 μg/mL.
Orientador: Hérida Regina Nunes Salgado
Coorientador: Marcos Antônio Corrêa
Banca: Maria Valéria Robles Velasco
Banca: Luis Alexandre Pedro de Freitas
Banca: Raquel Regina Duarte Moreira
Banca: Maria Virginia Costa Scarpa
Doutor

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Mitozo, Péricles Arruda. "Comparação entre sistemas de degradação de peróxidos em fatias de hipocampo de ratos, glioma de ratos (C6) e neuroblastoma de camundongos (N2a)." reponame:Repositório Institucional da UFSC, 2012. http://repositorio.ufsc.br/xmlui/handle/123456789/94508.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Neurociências, Florianópolis, 2010
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Estudo comparativo das atividades das enzimas antioxidantes catalase, glutationa peroxidase e peroxirredoxina em fatias de hipocampo de ratos, células de glioma de ratos (C6) e células de neuroblastoma de camundongos (N2a) expostas aos peróxidos de hidrogênio (H2O2) e cumeno (CuOOH).

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NASCIMENTO, João Luis Joventino do. "Processos educativos: as lutas das mulheres pescadoras do mangue do cumbe contra o racismo ambiental." www.teses.ufc.br, 2014. http://www.repositorio.ufc.br/handle/riufc/14373.

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NASCIMENTO, João Luis Joventino do. Processos educativos: as lutas das mulheres pescadoras do mangue do cumbe contra o racismo ambiental. 2014. 119f. – Dissertação (Mestrado) – Universidade Federal do Ceará, Programa de Pós-graduação em Educação Brasileira, Fortaleza (CE), 2014.
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The Coastal Zone is cearense territories are spaces of resistance of various traditional and étnicorraciais social groups. The Cumbria Community / Aracaty the east coast of Ceará / Brazil, is no exception, as it is in the same situation of "invisibility" and the threat of losing their territory for major economic development projects like the creation of shrimp in captivity - shrimp and parks wind power, which destroy and privatize their relations of life and belonging to the Community. The methodology chosen to conduct this study was qualitative, which has been in participatory research, oral history, his main instrument, the oral reports of the fisherwomen of the mangrove. Also address issues such as environmental conflicts, racial and gender relations. The elements and circumstances that presquisou been socialized with community leaders - the fisherwomen of the mangrove, which are ahead of the processes of struggle for the defense of traditional territory. Thus, we reaffirm the black presence on the east coast, coastal zone of Ceará, with reference to the collective memories of the fisherwomen, analyzing the changes and impacts that have occurred with the arrival of economic development projects and environmental conflicts arising as important elements to denounce environmental racism. This research was conducted at the Graduate Program in Education of the Federal University of Ceará, and we intend to work with and discuss the concept, still under construction in Brazil, Environmental Racism and its nuances, is part of a body of research that Sociopoética the Axis Culture and Relations Étnicorraciais, the Social Movements, Popular Education and School line has developed to discuss some concepts and current issues.
A Zona Costeira cearense representa territórios que são espaços de resistência de vários grupos sociais tradicionais e étnicorraciais. A Comunidade do Cumbe/Aracati no litoral leste do Ceará/Brasil, não foge à regra, pois se encontra na mesma situação de “invisibilidade” e sobre a ameaça de perder seu território para grandes projetos de desenvolvimento econômico, como a criação de camarão em cativeiro – carcinicultura e os parques de energia eólica, que destroem e privatizam suas relações de vida e pertencimento ao território comunitário. A metodologia escolhida para realização deste trabalho foi qualitativa, onde se tem na pesquisa participante, na história oral, seu principal instrumento de pesquisa, os relatos orais das mulheres pescadoras do mangue. Também se abordam questões como conflitos socioambientais, relações raciais e de gênero. Os elementos e circunstâncias que se pesquisou foram socializados com as lideranças comunitárias – as mulheres pescadoras do mangue que estão à frente dos processos de lutas pela defesa do território tradicional. Desta forma, reafirmar-se a presença negra no litoral leste, zona costeira do Ceará, tendo como referência as memórias coletivas das mulheres pescadoras, analisando as mudanças e os impactos que ocorreram com a chegada dos projetos de desenvolvimento econômico e os conflitos socioambientais resultantes como elementos importantes, para denunciar o racismo ambiental. Esta pesquisa foi realizada junto ao Programa de Pós-Graduação em Educação da Universidade Federal do Ceará e, pretende trabalhar e discutir o conceito, ainda em construção no Brasil, de Racismo Ambiental e suas nuances, sendo parte de um conjunto de pesquisas que o Eixo Sociopoética, Cultura e Relações Étnicorraciais, da linha Movimentos Sociais, Educação Popular e Escola, vem desenvolvendo para discutir conceitos e temáticas atuais.

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Puente, Vigiola Iker. "Complejidad y psicología transpersonal: caos, autoorganización y experiencias cumbre en psicoterapia." Doctoral thesis, Universitat Autònoma de Barcelona, 2014. http://hdl.handle.net/10803/283929.

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La presente tesis doctoral tiene como objetivo principal explorar los efectos a corto y medio plazo de dos técnicas de respiración, la Respiración Holorénica (RHrnc) y la Respiración Holotrópica (RHtrp), así como lo efectos subjetivos de la RHtrp. La tesis está dividida en dos bloques. En el bloque teórico se presentan el pensamiento sistémico, las ciencias de la complejidad y la psicología transpersonal, describiendo la relación de esta corriente de la psicología con las ciencias de la complejidad, de las que adoptan diversos conceptos y principios, y en especial los conceptos de caos y autoorganización. En el bloque experimental se presentan los resultados de la investigación empírica y está dividida en dos estudios. En el primer estudio se exploran los efectos que produce la RHrnc en el contexto de un taller residencial de fin de semana, en una muestra de adultos menores de 35 años, sin experiencia previa con la RHrnc, en el nivel de malestar subjetivo, percepción de sentido en la vida y ciertas características de personalidad. Los instrumentos empleados fueron el Inventario de Síntomas SCL-90-R, el Purpose in Life Test (PLT) y el Inventario de Temperamento y Carácter-Revisado (TCI-R). La muestra está constituida por 71 participantes en un taller de RHrnc y 52 controles. En el segundo estudio se exploran los efectos que produce la RHtrp en el contexto de un taller residencial de una semana en una muestra de adultos en el nivel de malestar subjetivo, percepción de sentido en la vida, ansiedad ante la muerte, y ciertas características de personalidad, así como los efectos subjetivos que produce la RHtrp. Los instrumentos empleados fueron el Brief Sympom Inventory (BSI), el PLT, el TCI-140), la Death Anxiety Scale (DAS) y el State of Consciousness Questionnaire (SCQ). Los resultados del primer estudio muestran que los participantes en el taller de RHrnc inicialmente presentan puntuaciones superiores a las del grupo control en el Índice de Severidad Global (ISG) del SCL-90-R y Autotrascendencia (AT), y menores en el PLT y las dimensiones de Autodirección (AD) y Cooperación (CO) del TCI-R. Por otro lado, se encontró una disminución en la puntuación del ISG, y un aumento en las puntuaciones del PLT, AD, CO y AT para el grupo experimental, una semana, un mes y 6 meses después del tratamiento. Los resultados del segundo estudio muestran que los participantes en el taller de RHtrp inicialmente presentan puntuaciones moderadamente altas en el ISG, AT y Búsqueda de Novedades (BN), y bajas en Evitación del Daño (ED). Por otra parte, se encontró un descenso significativo en la puntuación total del ISG y el DAS, y un aumento en la puntuación total del PLT y la dimensión de AD, dos semanas y cuatro meses después del taller. También se encontró que la RHtrp puede en ocasiones producir experiencias de carácter místico o experiencias cumbre. Asimismo, 12 meses después del taller, la experiencia de la RHtrp es frecuentemente valorada como personal y espiritualmente significativa, y se le atribuye un aumento del bienestar personal y la satisfacción vital.
The aim of this dissertation is to explore the short and medium term effects of two breathwork techniques, Holorenic Breathwork (HrncB) and Holotropic Breathwork (HtrpB), and the subjective effects of HtrpB. The dissertation is divided in two blocks. In the theoretical part, systems thinking, complexity sciences and transpersonal psychology are introduced, describing the relationship of this school of psychology with complexity sciences, from which adopts different concepts and principles, focusing in the concepts of chaos and self-organization. In the experimental part, the results of the empirical research carried out are presented. This research is divided in two studies. In the first study, the effects of HrncB on levels of distress, meaning of life and certain personality properties are explored. A total of 153 subjects, aged 18-35 years, were compared using a repeated measures design. The experimental group (N=71) participated for the first time in a workshop were HrncB was used. Measures were taken before and after the workshop (one week, and one and 6 months later). The control group (N=52) did not receive any alternative treatment. The tests used were the Symptom Checklist-90-Revised (SCL-R-90), the Purpose in Life Test (PIL) and the Temperament and Character Inventory-Revised. (TCI-R). In the second study, the effects of HtrpB on levels of distress, meaning of life, death anxiety, certain personality properties, and the subjective effects of HtrpB were explored. A repeated measures, single group design was used (N=27). The tests used were the Brief Symptom Inventory (BSI) the PLT, the TCI-140 (a reduced version of the TCI-R), the Death Anxiety Scale (DAS) and the States of Consciousness Questionnaire (SCQ). Measures were taken before and after the workshop (two weeks, and 4 months later) for the BSI, PLT, TCI-140 and DAS, and during the workshop, for the SCQ. In the first study, there was a reduction in the Global Severity Index (GSI) of the SCL-R-90, and an increase in the meaning of life (PIL), Self-directedness (SD), Cooperativeness (CO) and Self-transcendence (ST) dimensions of the TCI-R, one week, one month and 6 months after the workshop for the experimental group. The experimental group also shown higher scores on the GSI and ST, and lower scores on the PLT, SD and CO before the workshop, compared with the control group. In the second study, there was a significant reduction in the Global Severity Index (GSI) of the BSI and in the DAS total score, and an increase in the total score of the PLT and SD, two weeks and for months after the workshop. Participants shown moderately high scores on the GSI, AT and Novelity Seeking (NS), and low scores on Harm Avoidance (HA) before the workshop. HtrpB can also occasionally produce mystical-type or peak experiences. 12 months after the workshop, the HtrpB experience is frequently considered as having substantial personal and spiritual significance, and an incresease of personal weelbeing and life satisfaction is attributed to it.

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Silva, Romero Eduardo, and Juan Felipe Merizalde. "¿Cumple su finalidad el Nuevo Reglamento de Transparencia de la CNUDMI?" Arbitraje PUCP, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/112685.

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SILVA, Antônio Andre Lima da. "Avaliação da atividade antimicrobiana e da histocompatibilidadede extratos de Syzygium cumini (L.) Skeels." Universidade Federal de Pernambuco, 2009. https://repositorio.ufpe.br/handle/123456789/18498.

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Syzygium cumini (L.) Skeels é uma planta nativa da Índia, pertencente à família das Myrtaceae. É reconhecida popularmente como jambolão, azeitona preta e usada no tratamento de inflamações, disenterias, úlceras digestivas e diabetes. Entretanto, sua atividade antimicrobiana foi menos investigada. Os objetivos deste estudo foram analisar qualitativamente e semi-quantitativamente a composição química de quatro diferentes extratos brutos (éter de petróleo, acetato de etila, metanol e aquoso) obtidos das folhas de S. cumini, determinar a atividade antimicrobiana in vitro frente bactérias e leveduras e, além disso, verificar se existe compatibilidade biológica do extrato aquoso de S. cumini com o tecido subcutâneo de ratos Wistar. Estudos fitoquímicos realizados nas folhas de S. cumini determinaram vários metabólitos secundários, em especial os taninos hidrolizáveis de reconhecida atividade antimicrobiana. Os extratos foram submetidos à avaliação da atividade antimicrobiana usando o método da microdiluição preconizado pelo Clinical and Laboratory Standards Institute (CLSI), para determinar a Concentração Inibitória Mínima (CIM). Foram utilizados 36 cepas de bactérias dos gêneros Enterococcus faecalis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa e Salmonella enterica e 8 cepas de leveduras do gênero Candida albicans, multirresistentes a diversos antimicrobianos utilizados na clínica médica e do American Type Culture Collection (ATCC). Os resultados obtidos da CIM foram tratados estatisticamente através da Análise de Variância one-way (ANOVA). O extrato aquoso extraído das folhas de S. cumini foi o mais ativo obtendo uma CIM média de 0,46 mg mL-1. Os extratos obtidos demonstraram as maiores atividades contra a bactéria gram-positiva Staphylococcus aureus, particularmente o extrato aquoso mostrou-se ser mais ativos com uma CIM de desvio padrão de 0.41 mg mL-1 frente às linhagens. A Biocompatibilidade do extrato aquoso mostrou-se sem nenhuma alteração significativa nos elementos estruturais presentes no tecido subcutâneo. Os resultados obtidos aumentam o potencial da planta em aplicações fitoterápicas, sendo promissor o desenvolvimento de medicamentos inovadores baseado nas pesquisas com S. cumini.
Syzygium cumini (L.) Skeels is a native plant of India, belonging to the family of Myrtaceae . It is popularly recognized as jambolan, black olive and used in the treatment of inflammations, dysentery, digestive ulcers and diabetes. However, its antimicrobial activity was less investigated. The objectives of this study were to analyze qualitatively and semi - quantitatively the chemical composition of four different crude extracts (petroleum ether, ethyl acetate, methanol and aqueous) obtained from the leaves of S. cumini, determine the in vitro antimicrobial activity ahead bacteria and yeasts and, in addition , check for biological compatibility of the aqueous extract of S. cumini with the subcutaneous tissue of rats Wistar. Estudies phytochemicals performed on leaves of S. cumini determined several secondary metabolites, especially hydrolyzable tannins recognized antimicrobial activity. The extracts were evaluated for antimicrobial activity using the microdilution method recommended by the Clinical and Laboratory Standards Institute (CLSI), to determine the Minimum Inhibitory Concentration (MIC), 36 strains of the bacteria Enterococcus faecalis , Staphylococcus aureus, Escherichia coli , Pseudomonas aeruginosa and Salmonella enterica and 8 yeast strains of Candida albicans , multidrug resistant to several antimicrobials used in medicine and the American Type Culture Collection (ATCC) were used . The results of MIC were statistically analyzed by one-way (ANOVA) analysis of variance. The aqueous extract extracted from the leaves of S. cumini was the most active obtaining an average MIC of 0.46 mg mL- 1.The extracts showed the highest activities against gram positive bacterium Staphylococcus aureus, particularly aqueous extract proved be more active with a standard 0.41 mg mL- 1 strains facing the CIM deviation . The biocompatibility of the aqueous extract was found to be no significant change in the structural elements present in the subcutaneous tissue. The results increase the potential of the plant in herbal applications, and promising the development of innovative medicines based on research with S. cumini.

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Jofré, Figueroa Samuel Enrique. "Libertad condicional en Chile : ¿cumple con las exigencias de un debido proceso?" Tesis, Universidad de Chile, 2018. http://repositorio.uchile.cl/handle/2250/147355.

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Memoria (licenciado en ciencias jurídicas y sociales)
El presente trabajo tiene como objetivo analizar la institución de la libertad condicional en Chile y determinar si esta cumple o no con las exigencias nacionales e internacionales de un debido proceso. Para esto, el trabajo comienza con un análisis de la normativa que regula la libertad condicional respecto a cuáles son sus fundamentos, los requisitos para obtenerla, las obligaciones a que queda sujeto el liberto, quiénes son los intervinientes, y cómo se desarrolla el procedimiento de postulaciones. Adicionalmente, se analizan algunas problemáticas y discusiones que se han surgido en torno a la libertad condicional en Chile. Continúa con un análisis de la regulación tanto nacional como internacional del debido proceso, mediante la selección y estudio de los derechos que lo integran. Esto, principalmente a través del estudio de doctrina nacional y de jurisprudencia de nuestros tribunales nacionales, como también del estudio de la Convención Americana de Derechos Humanos y de la jurisprudencia de la Corte Interamericana de Derechos Humanos. Posteriormente, se realiza un análisis y cruce entre el funcionamiento de la libertad condicional con los derechos en concreto que habremos estudiado, para determinar cómo están contemplados y aplicados a la libertad condicional, si es que lo están. O en su defecto, veremos cuáles son los déficits con los que nos encontramos en la materia y cómo se vulneran dichos derechos. Finaliza este trabajo con las conclusiones, en donde respondemos nuestra pregunta inicial acerca de si se cumple o no con las exigencias de un debido proceso, para posteriormente dar algunas ideas o lineamientos hacia dónde se debiera avanzar en la materia.

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Almada, Carine Nunes de. "Atividade antioxidante do extrato etanÃlico de folhas de azeitona da terra (Syzygium Cumini L.) e seu efeito contra estresse induzido por paracetamol." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10229.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Syzygium cumini is a plant originated from India and adapted in Brazil, popularly known as black plum, jambolan and jamun. In this study, the antioxidant and protective activities of ethanolic leaves extract of Syzygium cumini (EE) were evaluated on paracetamol-induced liver damage in mice. The total antioxidant activity was determined by ABTS and DPPH methods and the content of vitamin C, extractable polyphenols, anthocyanins, yellows flavonoids and carotenoids were evaluated by different methods. The toxicity of EE was evaluated with different doses up to 1200 mg/kg administered orally for eight consecutive days. Subsequently, doses of the EE (150, 300 and 600 mg/kg weight) were administered by gavage for 7 consecutive days before treatment with single dose of paracetamol (500 mg/kg, orally) and its hepatoprotective effect has been studied by monitoring biochemical parameters. The extract presented high antioxidant activity in ABTS (2148.88 Â 140.26 mM Trolox/g of sample) and DPPH (87.11 Â 1.58 g of sample/g DPPH) assays. The extractable polyphenols prevailed among determined phytochemicals. Regarding toxicity, EE showed no toxic effects at the doses evaluated. EE (600 mg/kg) presented hepatoprotective effect that was evidenced by the decrease in the activities of alanine aminotransferase (56.94%), aspartate aminotransferase (30.14%) and alkaline phosphatase (32.68%) in the serum of animals treated with EE (600 mg/kg) and subjected to ingestion of paracetamol (EE600+ P group) compared with the group paracetamol. In liver tissue, there was a decrease of 25.68%, 31.67% and 31.97% of the malondialdehyde levels and elevation of 60.03%, 63.67% and 69.12% of the dismutase superoxide activity in EE150+ P EE300+ P and EE600+ P groups, respectively, when compared with the paracetamol group. Furthermore, non-protein sulfhydryls groups in the liver increased 56.74% and 63.61% in EE300+P and EE600 + P groups when compared with the paracetamol group. The ethanolic leaves extract of Syzygium cumini conferred hepatoprotection against stress by paracetamol, this effect may be associated to its high antioxidant activity.
Syzygium cumini Ã uma planta originÃria da Ãndia e adaptada ao Brasil, popularmente conhecida como azeitona da terra, ameixa preta, jambolÃo e jamun. Neste estudo, as atividades antioxidantes e protetoras do extrato etanÃlico (EE) de folhas de azeitona da terra foram avaliadas contra danos induzidos por paracetamol no fÃgado de camundongos. A atividade antioxidante total foi determinada atravÃs dos mÃtodos ABTS e DPPH e os teores de vitamina C, polifenois extraÃveis, antocianinas, flavonoides amarelos e carotenoides foram avaliados por diferentes mÃtodos. A toxicidade do EE foi avaliada com diferentes doses atÃ 1200 mg/Kg administradas por via oral durante oito dias consecutivos. Posteriormente, doses do EE (150, 300 e 600 mg/Kg de peso) foram administradas por gavage durante 7 dias consecutivos antes do tratamento com dose Ãnica de paracetamol (500 mg/Kg, por via oral) e o seu efeito hepatoprotetor foi estudado atravÃs do monitoramento de parÃmetros bioquÃmicos. O extrato apresentou elevada atividade antioxidante nos ensaios de ABTS (2.148,88 Â 140,26 ÂM Trolox/g de amostra) e DPPH (87,11 Â 1,58 g de amostra/g DPPH). Os polifenois extraÃveis predominaram entre os fitoquÃmicos determinados. Em relaÃÃo Ã toxicidade, EE nÃo apresentou efeitos tÃxicos nas doses avaliadas. EE (600 mg/kg) apresentou efeito hepatoprotetor que foi evidenciado pela diminuiÃÃo nas atividades de alanina aminotransferase (56,94%), aspartato aminotransferase (30,14%) e fosfatase alcalina (32,68%) no soro de animais tratados com EE (600 mg/kg) e submetidos a ingestÃo de paracetamol (grupo EE600+P) em comparaÃÃo com o grupo paracetamol. No tecido hepÃtico, houve diminuiÃÃo de 25,68%, 31,67% e 31,97% dos teores de malondialdeÃdo e elevaÃÃo de 60,03%, 63,67% e 69,12% da atividade da superÃxido dismutase nos grupos EE150+P, EE300+P e EE600+P, respectivamente, quando comparados com o grupo paracetamol. Ademais, os grupos sulfidrilas nÃo proteicos no fÃgado aumentaram 56,74% e 63,61% nos grupos EE300+P e EE600+P quando comparados com o grupo paracetamol. O extrato etanÃlico de folhas de azeitona da terra conferiu hepatoproteÃÃo contra estresse por paracetamol, podendo esse efeito estar associado Ã sua elevada atividade antioxidante.

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Salgado, Fernández Enrique. "Cumbre y abismo en la filosofía de Nietzsche : el cultivo de sí mismo /." Madrid : Plaza y Valdés, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016283489&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Cumana, Sucre [Verfasser]. "Application of silica-based porous materials in microreactors and chromatographic separations / Sucre Cumana." München : Verlag Dr. Hut, 2014. http://d-nb.info/1060587602/34.

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Regan, John M. "Countering the revolutionaries : an examination of the Cumann na nGaedheal Party 1922-25." Thesis, Queen's University Belfast, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.324836.

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Bonnet, Corinne. "Le grand atelier de la science Franz Cumont et l'Altertumswissenschaft : héritages et émancipations /." Brussel ; Rome : Belgisch Historisch Instituut te Rome, 2005. http://catalog.hathitrust.org/api/volumes/oclc/71358956.html.

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Vale, Caroline Castro. "Perfil metabólico e reprodutivo de ratas obesas tratadas com Syzygium cumini (L.) Skeels." Universidade Federal do Maranhão, 2016. http://tedebc.ufma.br:8080/jspui/handle/tede/1627.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPQ)
Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão (FAPEMA)
Metabolic syndrome (MS) is defined as a set of interrelated risk factors that contribute to type 2 diabetes mellitus (T2DM) and cardiovascular disease (CVD). SM also causes harmful effects on the reproductive system, especially for women, as it reducies ovulatory rates, increasies the number of abortions and late pregnancy complications, which increase the risk of infertility. As a form of treatment approaches are adopted both non-pharmacologic and pharmacologic. In this context, the use of alternative therapies with natural products has emerged as a safer and less associated with worsening of MS risk factors. Syzygium cumini (jambolan) is a species of Asian origin, but cultivated and used throughout the world for its anti-hyperglycemic, anti-hiperlipemiantes and antioxidants. Through these actions, we sought to investigate whether the hydroalcoholic extract of the leaves of S. cumini (EHSyz) improves the metabolic changes and consequently, changes in reproductive function in rats with induced obesity L-monosodium glutamate (MSG) a dose 4g/Kg/day. Wistar female rats were divided into the following groups: CTRL group (treated with NaCl 0.9% 0.1 ml / 100g / day v.o,); MSG group (treated with NaCl 0.9% 0.1 ml / 100g / day V.O.); EHSyz obese group (treated with EHSyz at a dose of 500mg / kg / day, V.O.), each for 60 days. The administration EHSyz promoted with retention of weight gain, reduction Lee index and improved glycolipid profile, with reduced serum triglyceride levels by 60.7% and 29.7% compared to cholesterol total.O EHSyz even avoided introduction resistance table in the treated rats. However, despite the improvement in oligociclicidade, the extract was not able to improve reproductive impairment of the treated rats. Thus, we conclude that treatment with EHSyz produced marked effects on metabolic parameters in obese rats without interfering with the reproductive capacity of the same.
A síndrome metabólica (SM) é definida como um conjunto de fatores de risco interrelacionados que contribuem para o diabetes mellitus tipo 2 (DM2) e doenças cardiovasculares (DCV). A SM também provoca efeitos deletérios sobre o sistema reprodutor, especialmente feminino, com redução de taxas ovulatórias, aumento do número de abortos, complicações tardias da gravidez, que elevam o risco de infertilidade. Como forma de tratamento, são adotadas abordagens tanto não farmacológicos quanto farmacológicas. Nesse contexto, o uso de terapias alternativas com produtos naturais tem se destacado como uma forma menos associada ao agravamento dos fatores de risco da SM. Syzygium cumini (jambolão) é uma espécie vegetal de origem asiática, porém cultivada e utilizada em todo o mundo por suas propriedades anti-hiperglicemiantes, anti-hiperlipemiantes e antioxidantes. Mediante tais ações, buscamos investigar se o extrato hidroalcoólico das folhas de S. cumini (EHSyz) melhora as alterações metabólicas e, consequentemente, as alterações da função reprodutiva de ratas com obesidade induzida por L-glutamato monossódico (MSG) na dose 4g/Kg/dia. Fêmeas Wistar foram divididas nos seguintes grupos: grupo CTRL (tratado com NaCl 0,9% 0,1mL/100g/dia v.o,); grupo MSG (tratado com NaCl 0,9% 0,1mL/100g/dia v.o.); grupo obeso EHSyz (tratado com EHSyz na dose de 500mg/kg/dia, v.o.), todos durante 60 dias. A administração com EHSyz promoveu manutenção do ganho de peso, redução do índice de Lee e melhora do perfil glicolipídico, com redução dos níveis séricos de triglicérides em 60,7 % e 29,7 % em relação ao colesterol total. O EHSyz evitou ainda a instauração do quadro de resistência nas ratas tratadas. Entretanto apesar da melhora na oligociclicidade, o extrato não foi capaz de melhorar o comprometimento reprodutivo das ratas tratadas. Desta forma, concluímos que o tratamento com EHSyz produziu efeitos acentuados sobre parâmetros metabólicos de ratas obesas sem interferir na capacidade reprodutiva das mesmas.

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Velázquez, Velasco María Cecilia. "Impactos socioculturales de Cumbre Tajín percibidos por la comunidad local: un enfoque cualitativo." Tesis de Licenciatura, Universidad Autónoma del Estado de México, UAEM, 2016. http://hdl.handle.net/20.500.11799/64542.

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La realización de eventos especiales ha ido en aumento durante los últimos años, en particular los eventos de carácter turístico. Esto se debe a que los eventos traen consigo efectos económicos, sociales y culturales importantes para las comunidades locales donde se realizan. Estos eventos han beneficiado a comunidades anfitrionas a través de la generación de empleo y de la derrama económica local; de igual manera los efectos socioculturales positivos han sido reconocidos en varios casos, al tener un efecto en la identidad cultural, el fortalecimiento de la misma, entre otros. Sin embargo también se han reportado en varias investigaciones efectos negativos tales como la contaminación del suelo por la generación de basura, congestionamiento vehicular y el precio excesivo de los productos.

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Turatti, Ketylin Fernanda Migliato [UNESP]. "Syzygium cumini (L.) Skeels: avaliação da qualidade, estudo morfo-anatômico, estudo da atividade antimicrobiana, conservante, genotóxica, mutagênica, citotóxica e incorporação em formulações cosméticas para uso tópico." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/100091.

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Universidade Estadual Paulista (UNESP)
A necessidade da introdução de novos princípios ativos naturais no arsenal farmacêutico e/ou cosmético tem sido pesquisado, devido ao aparecimento de formas bacterianas resistentes, decorrentes, principalmente, do uso indiscriminado de agentes antimicrobianos, que possam ser utilizados como anti-sépticos ou como conservantes de preparações farmacêuticas ou cosméticas. Dentro disto foi realizado o estudo da atividade antimicrobiana com o extrato seco dos frutos de Syzygium cumini (Myrtaceae), fundamentado com os usos populares descritos para este vegetal, popularmente conhecido, no Brasil, como jambolão, jamelão ou azeitona-roxa. Para garantir-se a autenticidade da droga vegetal, realizou-se estudo morfo-anatômico do material colhido. O extrato vegetal foi preparado pelo método da percolação, utilizando como solvente etanol: água (50:50). Após validação de metodologia para o doseamento do extrato, foram realizados ensaios de citotoxicidade, mutagenicidade, genotoxicidade, avaliação da atividade antimicrobiana e possível emprego como conservante após sua aplicação em preparações para uso externo: sabonete líquido, gel com polímero sintético e emulsão não-iônica. O estudo morfo-anatômico identificou glândulas secretoras de óleos essenciais, drusas e idioblastos tânicos, característicos da família Myrtaceae. O método espectrofotométrico foi validado para análise quantitativa do extrato produzido, garantindo confiabilidade aos resultados obtidos. O estudo de citotoxicidade apresentou índice de morte celular IC50 na concentração de 400,0 μg/mL do extrato de S. cumini. A freqüência de micronúcleos, em células da medula óssea de camundongos, não demonstrou efeito mutagênico em 24 e 48 horas após administração do extrato seco dos frutos de S. cumini.
The need for introducing new active principles to the pharmaceutical and/or cosmetic arsenal has been researched, due to the surge of resistant bacterial forms, stemming basically from the indiscriminate use of antimicrobial agents. The interest in obtaining new material with antimicrobial activity that can be used as antiseptics or as preservatives for pharmaceutical or cosmetic preparations led to a study on antimicrobial activity with the dry extracts of the fruit from Syzygium cumini (Myrtaceae). Such an interest is directly related to the popular uses of this plant, popularly known in Brazil as jambolão, jamelão or black plum. To assure the authenticity of the vegetable drug, a morpho-anatomical study has been performed on the material collected. The extract was prepared by percolation method, using ethanol:water (50:50) as a solvent. After validating the methodology for determining dosage extract, tests have been performed for citotoxicity, mutagenicity, genotoxicity, evaluation of antimicrobial activity and possible use as a preservative after its application in preparations for external use: liquid soap, gel with synthetic polymer and non-ionic emulsion. The morpho-anatomical study identified secretion glands of essential oils, druses and tannic idioblasts, characteristic of the Myrtaceae family. The spectrophotometric method was validated for quantitative analysis of the extract produced. The citotocixity study showed a cell death index of IC50 in the concentration of 400.0 μg/mL of the S. cumini extract. The frequency of micronuclei, in bone marrow cells in mice, did not show mutagenicity effect at 24 and 48 hours after administration of dry extract of fruit from S. cumini. The test for micronucleus in T. pallida, performed for evaluation of the mutagenicity showed a mutagenic effect in the concentrations of 1250.0 and 2500.0 μg/mL.

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Carmo, Dilce Rejane Peres do. "O COTIDIANO DO SER ADOLESCENTE QUE CUMPRE MEDIDA SÓCIOEDUCATIVA: DESVELANDO POSSIBILIDADES ASSISTENCIAIS DE ENFERMAGEM." Universidade Federal de Santa Maria, 2010. http://repositorio.ufsm.br/handle/1/7325.

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This research was developed in a phenomenological approach through Martin Heidegger´s line of thinking, aiming to understand the adolescent-being life experience while captive in the Semi-Freedom Socioeducational Attention Center. The scenario of this research is the Socioeducational Attention Foundation, in Santa Maria, RS, Brazil. It began after it was authorized by the Foundation and the Universidade Federal de Santa Maria Ethics Committee. For the data production a phenomenological interview was applied to nine institutionalized teenagers. Through a comprehensive analysis the results show that living under the socioeducative measure means for the teenager a prison, something bad and that he must pay for his deeds. He recognizes that he has done wrong. He knows that he is not in the penitentiary system because of his age and he recognizes that he has lost his teenagehood. In the institution he goes to school to learn something, to get a job. He has trouble living among his street rivals and dealing with the institutional agents´ authority and in an unequal system. He valorizes his family, father, mother, brothers, cousins, uncles, son and girlfriend, which his half-freedom allows him to have. In the interpretative analysis, the adolescent-being day-by-day amidst the socioeducative measure reveals ways to be, which expresses impersonality. Absorbed by the system´s routine he keeps busy, and shows that he is thrown in that which is determined and where he belongs. It implies an effort on living among others, which constitutes a special way of being in the world, which is totally absorbed by the world and by the presence of the others in the impersonal. In keeping occupied and in decadence he shows that he needs help from the nursing and the socioeducative measure through the transdisciplinar work and by the strengthening of a social network support, aiming his re-insertion through the co-responsibility of his family, community and State. It brings to light a care that makes possible the recovery of the choice, that can give back the singularity of being.
A pesquisa foi desenvolvida na abordagem fenomenológica a partir do pensamento de Martin Heidegger, com o objetivo de compreender o cotidiano do ser-adolescente que cumpre medida socioeducativa de semiliberdade. O cenário da pesquisa foi uma unidade da Fundação de Atendimento Socioeducativo, no Rio Grande do Sul. Deuse inicio após a autorização pela Fundação e a aprovação pelo Comitê de Ética da Universidade Federal de Santa Maria. Para produção dos dados, a entrevista fenomenológica foi desenvolvida com nove adolescentes institucionalizados, no período de fevereiro a maio de 2009. Na análise compreensiva, os resultados apontaram que vivenciar a medida socioeducativa significa para o adolescente uma prisão, algo ruim que ele tem que pagar, re-conhece que errou. Sabe que não esta no sistema penitenciário por conta da idade e re-conhece que jogou fora sua adolescência. Na instituição vai à escola para aprender algo, para arrumar algum trabalho. Enfrenta dificuldades de conviver com rivais de rua, com a autoridade dos agentes institucionais e as desigualdades do sistema. Valoriza a família, pai, mãe, irmãos, prima, tia, tio, filho e namorada, a semiliberdade proporciona essa possibilidade. Na análise interpretativa, no cotidiano o ser-adolescente se mostrou em-meio ao sistema socioeducativo, re-velando modos de ser, que exprime uma impessoalidade. Absorvido pela rotina do sistema se mantém na ocupação, mostra que está-lançado naquilo que está determinado e no qual ele permanece. Indica empenho na convivência, que constitui um modo especial de ser-no-mundo, em que é totalmente absorvido pelo mundo e pela co-presença dos outros no impessoal. Na ocupação e na decadência mostra que precisa de ajuda da enfermagem e do sistema socioeducativo mediado pelo trabalho transdisciplinar e pelo fortalecimento de uma rede de apoio social, com vistas à sua reinserção mediada pela coresponsabilidade da família, comunidade e Estado. Traz à luz um cuidado que possibilita a recuperação da escolha, que devolve a singularidade de ser.

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Louarn, Johann. "Exploitation des champignons mycorhiziens à arbuscules pour la protection du tournesol contre Orobanche cumana." Toulouse 3, 2013. http://thesesups.ups-tlse.fr/2602/.

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Les plantes parasites telles que l'orobanche causent de nombreux dégâts sur les cultures et il existe peu de méthodes efficaces pour lutter contre ce fléau. L'objectif de la thèse a été de déterminer si des micro-organismes vivant en symbiose avec les plantes, les champignons mycorhiziens à arbuscules, peuvent être utilisés pour combattre les attaques d'Orobanche cumana sur le tournesol. Nous avons tout d'abord observé que la mycorhization de plants de tournesol réduit significativement leur infection par Orobanche cumana. Cet effet semble au moins en partie dû à une moindre germination des graines d'orobanche à proximité des plants mycorhizés. Nous avons ensuite montré que les champignons mycorhiziens euxmêmes produisent des inhibiteurs de la germination des graines d'orobanche. Enfin, nous avons mis au point un système in vitro permettant d'observer toutes les étapes précoces de l'infection de racines de tournesol par Orobanche cumana, en présence ou non de champignons mycorhiziens
Parasitic weeds such as broomrapes (Orobanche spp. ) can cause severe damage on crop plants, and efficient and sustainable control methods are needed. The aim of our work was to determine whether symbiotic micro-organisms called arbuscular mycorrhizal fungi can be used as a biocontrol method to protect sunflower against Orobanche cumana. We first observed that mycorrhization of sunflower plants reduced significantly their infection by Orobanche cumana. We then showed that mycorrhizal sunflower root exudates induced lower Orobanche cumana seed germination than non-mycorrhizal root exudates. Moreover, we demonstrated for the first time that AM fungi alone could produce inhibitors of Orobanche seed germination. Finally, we set up a novel in vitro system in which the early stages of sunflower root infestation by Orobanche cumana can be monitored. This system could be used to investigate possible effects of mycorrhizal fungi on these different stages

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Groom, Simon. "An integrated study of the magmatic products linked to the Cumbre Nueva Collapse, La Palma." Thesis, Birkbeck (University of London), 2017. http://bbktheses.da.ulcc.ac.uk/271/.

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The eruptive sequences linked to the Cumbre Nueva Collapse of La Palma’s Taburiente volcano provide ideal material for a study that integrates field volcanology, geochronology, lava petrology and whole rock magmatic geochemistry. Lavas exposed in Taburiente’s El Time region and on the post-collapse Bejenado volcano bracket the collapse and record this period’s magmatic processes. Their integrated study allows us to reconstruct how a collapse interacted with the magma supply system. By studying the same lava flows using multiple techniques that address successively deeper parts of the magma supply we present an unusually well-constrained interpretation of the processes at depth. Results of field and 40Ar/39Ar geochronological study indicate that the collapse (≈530 ka) ended a typical period of volcanic re-surfacing at Taburiente’s Paleo-Cumbre Nueva Rift. It was followed by focused volcanism within the collapse structure producing the Bejenado volcano. This was a major, rapid, volcanic episode that included explosive phreatomagmatic activity as well as of voluminous, effusive lava emplacement. Its physical volcanology was in part controlled by magmatic evolution, with products ranging from basanites to tephri-phonolites. Petrological study indicates that dynamic collapse-related processes took place within the magma reservoir system throughout this period, in reservoirs located in the lithospheric mantle. Reservoir processes included the disruption of cumulates, super-saturated crystallisation of feldspar and clinopyroxene, mixing between primitive and evolved magmas, and assimilation of amphibole-bearing lithologies. Whole rock elemental and isotope (Sr, Nd, Pb) geochemistry results indicate that most of Bejenado’s eruptive products were hybrids between two magma batches with contrasting source signatures in a major ongoing reservoir process. The more primitive of these batches had an unusually depleted isotope signature for La Palma lavas, while the more evolved, HIMU-dominated, magma had high incompatible element contents. The unusual depleted signature indicates that the collapse affected the deepest part of the magma-supply system.

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45

Hepp, Anne-Laure. "Metabolomic analysis of the resistance response in sunflower roots to the parasitic weed Orobanche cumana." Thesis, University of Sheffield, 2015. http://etheses.whiterose.ac.uk/11851/.

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46

Salazar, Perdomo Viridiana Amelia. "Análisis cultural del Festival Cumbre Tajín en la población local, desde la perspectiva del turista." Tesis de Licenciatura, Facultad de Turismo y Gastronomía, 2013. http://ri.uaemex.mx/handle/20.500.11799/13727.

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Los estudios que abordan las repercusiones sociales y culturales en la sociedad, son de especial interés para el turismo, particularmente aquellos que se refieren a la presencia de los visitantes, ya que a partir de ellos se descubre no solo una gama de matices y contrastes -en lo que a cultura se refiere- sino por los alcances que la presencia de tales visitantes puede tener en los esquemas de inter y transculturalidad. Precisamente, esta investigación gira en torno a las repercusiones culturales que se generan en torno al Festival Cumbre Tajín, en la población de Tajín, Veracruz y la forma en que son percibidas por el turista. Dada la presencia de visitantes –y lo que ello conlleva– y su interacción con grupos locales que cimentan expectativas de desarrollo con base en sus tradiciones y prácticas culturales. El Festival se lleva a cabo año con año entre el 17 y 21 de marzo, siendo un evento de corte masivo, en la pasada emisión de de 2013 llegaron 496 mil visitantes”, reveló Salomón Bazbaz Lapidus, Director General de Cumbre Tajín” (El Universal Veracruz, 2013); en esta emisión se pudieron observar diferentes conductas adoptadas por el visitante, el cual tiene contacto -ya sea en forma directa o indirecta- con los pobladores de la comunidad

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47

Salazar, Parrales Angélica. "Comercialización, cambios y usos de la vestimenta totonaca durante el Festival de Identidad Cumbre Tajín." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2018. http://hdl.handle.net/20.500.11799/99094.

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48

Silva, Célio. "Sobre os cumes dos montes sacrificam Um estudo em Oseias 4,4-19." Universidade Metodista de São Paulo, 2012. http://tede.metodista.br/jspui/handle/tede/225.

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Made available in DSpace on 2016-08-03T12:19:06Z (GMT). No. of bitstreams: 1 Celio Silva.pdf: 845511 bytes, checksum: e388cb67317172a187cbedf784344d3f (MD5) Previous issue date: 2012-04-20
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The thesis is divided into three chapters: in the first one, the form and setting of Hosea 4,4-19 are studied; in the second chapter its interpretation is made and in the third one, other texts extracted from the book of Hosea are analysed, which corroborate the thesis presented from the analysis of Hosea 4,4-19, that was made in the two previous chapters. The study of Hosea avails the old prophet to speak again and we can hear him to say to his situation, as an Israelite and to represent his brothers and sisters in their hardships in Israel in the 8th century B. C. The passage chosen to be analysed shows many aspects of that life, characterized by declarations, expressions and vivid images, as to make a picture for his everyday life. And here it is the main point of the reflections about the biblical passage: an everyday life condemned by the prophet, in name of Yahweh, that covers the abuse of people through its glamour, justifications and even religion. The prophet does not condemn the Israelites, neither the women (4,13-14), but the lords of the power , which groups the priests used to belong to, for they abandoned their responsabilities in favour of people of Yahweh and followed their own interests, despite that people s losses. Reinforcing his accusations (and lamentations, vv.6 and 11), Hosea uses, metaphorically, terms as the Hebrew root hnz znh and derived words, which are understood in this thesis as being or becoming independent , for those people who dominate in the country have proceeded autonomously, far away from the Yawistic traditions which are based on true knowledge (tu^D^ da at) and instruction (hr*oT torah) of god, that can be noticed in the practice of the right (fP*v=m! mispat) and the solidarity (ds#j# hesed). Hosea neither unmask idolatric rituals with the intention of preserving religious ideas, nor concerns about practices, even those belonging to prostitution, for moralistic issues. He protests against the reality of a life condemned to be smashed by groups that, showing themselves so religious, have become, in practice, independent from Yahweh of exodus, Yahweh of poor people.
A tese divide-se em três capítulos: no primeiro, estudam-se a forma e o lugar de Oseias 4,4-19; no segundo, os conteúdos da passagem bíblica em foco; e, no terceiro capítulo, abordam-se outros textos do livro de Oseias que corroborem com a tese apresentada a partir da análise de Oseias 4,4-19, feita nos capítulos anteriores. Estudar Oseias é abrir possibilidade de dar voz, novamente, ao antigo profeta e ouvir-lhe falar para a sua situação de israelita e representar seus irmãos na dura realidade da vida em Israel no século 8º a. C. O trecho selecionado para estudo apresenta muitos aspectos dessa vida, caracterizada por declarações, expressões e imagens vívidas, como a montar um quadro do seu cotidiano. E aqui reside o ponto nevrálgico das reflexões sobre a passagem bíblica: um cotidiano condenado pelo profeta, em nome de Javé, por encobrir, por meio de suas aparências e justificativas, o abuso de pessoas, até mediante a religião. O profeta não condena os israelitas, tampouco as mulheres (4,13-14), mas os senhores do poder , dentre os quais estão os sacerdotes, por deixarem suas responsabilidades em favor do povo de Javé para seguirem seus próprios interesses, a custa desse mesmo povo. Para reforçar suas acusações (e lamentações, vv.6 e 11), Oseias se utiliza, metaforicamente, de termos como a raiz hebraica hnz znh e palavras derivadas, a qual é entendida nesta tese como ser ou tornar-se independente , pois aqueles que mandam no país, têm procedido de maneira autônoma, longe das tradições javistas pautadas no verdadeiro conhecimento (tu^D^ da at) e na instrução (hr*oT torah) de deus, que podem ser percebidos na prática do direito (fP*v=m! mispat) e da solidariedade (ds#j# hesed). Oseias não pretende desmascarar cultos idolátricos pela simples preocupação de preservar ideias religiosas, e nem se preocupa com práticas, mesmo as de prostituição, por questões moralistas. Ele protesta contra a realidade de uma vida condenada ao esmagamento por grupos que, mostrando-se tão religiosos, tornaram-se, de fato, independentes do Javé do êxodo, do Javé dos pobres.

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Hagerfors, Erika, and Emelie Lagrosen. "Riskanalyskartor i GIS över tsunamidrabbade områden vid ett skredscenario av vulkanen Cumbre Vieja på La Palma, Kanarieöarna." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-296215.

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På Kanarieön La Palma finns sprickzonen och vulkanen Cumbre Vieja. Under ett vulkanutbrott år 1949 bildades ett förkastningssystem längs vulkanens västra sida som skulle kunna vara ett förstadium till en framtida kollaps av vulkanen. Denna kollaps skulle kunna leda till bildandet av en tsunami när kollapsmaterial rasar ner i havet likt ett jordskred. Tsunamin kan komma att spridas över stora delar av Atlanten och i olika grad påverka de omkringliggande kontinenterna. Det finns olika teorier om hur stort jordskredet kommer att bli och om det kommer att ske successivt eller kollapsa som en enda enhet. I detta arbete studeras fyra kollapsscenarier med volymer av 20 km3, 40 km3, 80 km3 och 450 km3 närmare. Utifrån dessa volymer skapas riskanalyskartor i GIS över ön Teneriffa och New Yorks storstadsområde som visar hur långt över land tsunamin når vid de olika kollapsscenarierna. Dessa kartor jämförs sedan med markanvändningskartor över Teneriffa och New Yorks storstadsområde. Trots att tsunamivågen kan bli mycket hög vid Teneriffas kust kommer stora delar av ön att undkomma tsunamin, vilket bl.a. beror på öns höga höjd över havet. Då de flesta byggnader är belägna vid kusten innebär det att många människor ändå riskerar att drabbas. New Yorks storstadsområde är istället lågt beläget, vilket bidrar till att många kustnära områden kommer att drabbas trots att våghöjden har avtagit väsentligt. Då detta område är mycket tätbefolkat kan en tsunami därför leda till en stor påverkan.
On the Canary Island La Palma there is a volcanic ridge called Cumbre Vieja. During an eruption in 1949 a fault system was formed along the western flank of the volcano that can be an early stage of a future flank collapse of Cumbre Vieja. During this collapse a large volume of rock material will fall into the ocean like a landslide, which could lead to the formation of a tsunami. The tsunami could spread over large parts of the Atlantic Ocean and to varying extent affect the surrounding continents. There are different theories of how big the landslide will be and if it will collapse gradually or as a coherent block. In this study four collapse scenarios with different volumes, 20 km3, 40 km3, 80 km3 and 450 km3, are studied more closely. Based on these volumes, vulnerability maps are created in GIS covering the island Tenerife and the New York metropolitan area. The maps show the land reach of the tsunami for each of the collapse scenarios. These maps are thereafter compared with land use maps over Tenerife and the New York metropolitan area. Despite the high amplitude of the tsunami wave at the coast of Tenerife, large parts of the island will remain unaffected by the tsunami. This is due to, among other things, the high altitude of the island. However, most buildings are located along the coast, which means that many people are at risk. The New York metropolitan area has, on the other hand, low altitude which is one explanation why many coastal areas will be affected despite the significant decrease in tsunami wave height. A tsunami would have a major impact due to these areas being densely populated.

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Teixeira, Ana Claudia de Araujo. "The experiences and the resistance of the native population of Cumbe in the conflicting cultural scenario of subsistence fishery and shrimp farming, and of the carcinicultura, Cumbe, Aracati-CE." Universidade Federal do CearÃ, 2008. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=1722.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico
Shrimp farming is the main cause of the rapid growth observed in aquiculture around the world. The practice was introduced in Brazil in the 1970s, but it required appropriate farming technology based on the Pacific white shrimp (Litopenaeus vannamei), incentive through public policies and funding by state banks beginning in 1996/1997 to trigger the boom which lasted until 2004. Most shrimp farms in the state of CearÃ are located in the municipality of Aracati, especially in Cumbe ― a community located in the vicinity of a mangrove swamp abundant with crabs. The objective of our study was to investigate how the native population of Cumbe experiences work in the mangrove and builds up resistance in the conflicting cultural scenario of subsistence fishery and shrimp farming. As methodological reference we used depth hermeneutics comprising the stages of socio-historical analysis, formal or discourse analysis, and interpretation/re-interpretation. The field work was carried out in Cumbe between December 2006 and February 2007 through participant observation and open interviews. The information collected revealed the existence of a socio-environmental conflict in Cumbe as mangrove land is increasingly appropriated by shrimp farmers justified by claims of progress, development, sustainability and efficiency. Local workers were initially attracted to the prospects of the new industry, but eventually felt deluded as life and work in the community, as well as the relation between community and ecosystem, became seriously compromised. Vast mangrove areas were cleared and fenced off to make room for shrimp ponds, making access to fishing grounds more difficult for the local population. Likewise, upon shrimp harvesting, waste water containing sodium metabisulfite was let out into the tributaries of the Jaguaribe river killing great numbers of fish and crabs. The latter became almost extinct locally for three years forcing many crab fishermen to move to mangrove swamps in the neighbor state Rio Grande do Norte or even to take menial jobs in the shrimp farming industry. Thus, the socio-environmental conflict in Cumbe involves both a power dispute over the mangrove ecosystem and a symbolic clash between shrimp farmers and subsistence fishermen regarding the concepts of development, sustainability and efficiency which justify the use and ownership of the disputed territories. Resistance towards shrimp farming originated with the communityâs disappointment over unfulfilled promises of development and job generation, reinforced by the near-destruction of the local crab fauna. Thus, a counter-hegemonic environmental discourse has emerged from new scientific knowledge and socio-environmental movements presenting a critique of the concepts of development, sustainability and efficiency as defined by the advocates of the shrimp farming industry, strengthening the identity of the native population and valuing the traditional ways of life and work.
A carcinicultura â criaÃÃo de camarÃo em cativeiro â tem sido responsÃvel pelo rÃpido crescimento da aqÃicultura mundial. Introduzida no Brasil na dÃcada de 70, somente a partir de 1996/1997, com o desenvolvimento de um pacote tecnolÃgico do camarÃo do pacÃfico (Litopenaeus vannamei), atravÃs do incentivo de polÃticas pÃblicas e com o financiamento dos bancos pÃblicos, atinge um crescimento acelerado atÃ 2004. No CearÃ, o municÃpio de Aracati concentra o maior nÃmero de fazendas de camarÃo e a maior Ãrea ocupada, estando grande parte destas implantada no Cumbe â um lugar rico por dar muito caranguejo. A delimitaÃÃo do nosso objeto de estudo pode ser explicitada na pergunta: como os(as) trabalhadores(as) vivenciam o trabalho no mangue e constroem a resistÃncia no tecido cultural conflitivo da pesca artesanal e da carciniculutra na comunidade Cumbe, em Aracati-CE? Buscando atender aos objetivos implÃcitos nesta pergunta adotamos o referencial metodolÃgico da HermenÃutica de Profundidade, e com base em suas trÃs fases â AnÃlise socio-histÃrica, AnÃlise Formal Discursiva e InterpretaÃÃo/Re-interpretaÃÃo â, conduzimos o nosso trabalho de campo realizado na comunidade Cumbe (dezembro/2006 a fevereiro/2007) e a discussÃo do material empÃrico coletado, por meio de observaÃÃo participante e entrevistas abertas. Os resultados mostram a existÃncia de um conflito socioambiental no Cumbe, visto que o uso e a apropriaÃÃo do territÃrio manguezal pela carcinicultura, baseado no discurso da crenÃa no progresso e no desenvolvimento, da sustentabilidade e da eficiÃncia, no inÃcio âenvolveâ e âiludeâ os(as) trabalhadores(as), e, com o tempo, influencia o modo de vida da comunidade e sua relaÃÃo com o ecossistema manguezal, comprometendo a continuidade da cultura do trabalho ali realizado, particularmente na sua instalaÃÃo, ao devastar grandes Ãreas de mangue e ao fechar com cercas os criatÃrios de camarÃo, que dificultam ou impedem o acesso da comunidade ao mangue; e, especialmente, no desenvolvimento do seu processo produtivo, quando na realizaÃÃo da despesca do camarÃo, ocasionando a mortandade de peixes e caranguejos e a quase extinÃÃo destes Ãltimos por cerca de trÃs anos, situaÃÃo que levou a que muitos catadores de caranguejo tivessem de ir trabalhar em Ãreas de mangue do Rio Grande do Norte â estado vizinho ao CearÃ, e, em muitos casos, obrigaram-se a se empregar na carcinicultura em condiÃÃes precÃrias e humilhantes. Portanto, o conflito socioambiental no Cumbe se configura pela disputa tanto no que se refere Ã distribuiÃÃo de poder sobre o ecossistema manguezal como de uma luta simbÃlica em relaÃÃo Ãs categorias de âdesenvolvimentoâ, âsustentabilidadeâ e âeficiÃnciaâ que legitimam as diferentes prÃticas de uso e apropriaÃÃo do territÃrio pelos distintos agentes sociais â carcinicultores e trabalhadores(as) do mangue. Nesse sentido, a resistÃncia Ã carcinicultura ocorre em um contexto de desilusÃo da comunidade em relaÃÃo Ã crenÃa no desenvolvimento e na geraÃÃo de emprego, e adquire forÃa por ocasiÃo da ocorrÃncia da mortandade dos caranguejos, e com o apoio dos movimentos sociais ambientalistas e de pesquisa tem sido marcada pela construÃÃo de um discurso ambiental contra-hegemÃnico, fundamentado na crÃtica Ãs noÃÃes de desenvolvimento, sustentabilidade e eficiÃncia, propaladas pela carcinicultura, e na afirmaÃÃo da identidade das comunidades tradicionais (povos do mangue), valorizando o seu modo de vida e de trabalho.

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Dissertations / Theses on the topic 'Cumene'

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