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Alcántara, Mondragón Viridiana. "Evaluación de una pradera de ryegrass perene (Lolium perenne) bajo pastoreo continuo por corderos en crecimiento y finalización en Primavera-Verano." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/68549.
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La población humana mundial sigue aumentando con gran rapidez, en México para 2017 hay una población de 123.5 millones, y, de igual manera, se incrementa la demanda de productos pecuarios como la leche, carne y huevo; de tal forma que las empresas dedicadas a la agricultura y ganadería coinciden en la necesidad de lograr una mayor eficiencia productiva y rentabilidad económica; el caso de la ovinocultura no es la excepción; empero, esta actividad tiene la opción de producir a base de forrajes usados en condiciones de pastoreo, lo cual le permite disminuir los costos de producción, resultando esto en una gran ventaja sobre otras empresas como la avícola y porcina (Church et al., 2002).
El manejo agronómico de la pradera, así como el pastoreo animal, son aspectos fundamentales para explotar el potencial genético de las diferentes especies de gramíneas de clima templado como es el caso del ryegrass (Lolium perenne); sin embargo, en muchas ocasiones su desconocimiento ocasiona el fracaso de los sistemas de producción animal en pradera (Núñez et al., 1995).
Ofrecer y suministrar un forraje de buena calidad puede significar una mayor rentabilidad en la empresa ganadera; hay parámetros que determinan la calidad de los pastos, uno de ellos es su composición química, la cual se estima al practicar un análisis químico proximal del forraje, determinando el contenido de cenizas, fibra ácido detergente (FAD), fibra neutro detergente (FND), proteína cruda (PC), fibra cruda (FC), extracto etéreo (EE), extracto libre de nitrógeno (ELN), además del contenido de calcio, (Ca), fósforo (P), potasio (K), magnesio (Mg), y de los microelementos como manganeso (Mn), zinc (Zn), cobre (Cu), selenio (Se) y hierro (Fe) (Mc Donald et al., 1995).
La fracción de un alimento que, después de ser ingerida y digerida, no aparece en las heces fecales, debido a su desintegración y absorción, se denomina fracción digerida o digestible (Fondevila y Barrios, 2001).
La digestibilidad de la materia orgánica es un factor de suma importancia para determinar el valor nutritivo de un forraje, esa digestibilidad se modifica a medida que las plantas maduran con disminución de la proteína y aumento de la fracción fibrosa a base de los carbohidratos estructurales (Mc Donald et al., 1995). La digestibilidad de los forrajes puede variar dependiendo de factores asociados a los animales, y también según la especie vegetal, su edad y manejo agronómico (Bogdan, 1997).
El grado de digestibilidad de las plantas completas y de sus fracciones puede precisarse a través de métodos in vitro, uno de ellos es el método por producción de gas (Theodorou et al., 1994), en el cual el gas producido provee datos útiles sobre la digestión de las fracciones solubles e insolubles del alimento.
La evaluación de la pradera permite determinar la calidad nutritiva del forraje para aprovechar al máximo el material disponible a ser proporcionado a los animales en las mejores condiciones para su óptima producción (Duthil, 1989; Church et al., 2002).
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Andersson, Antonia. "Fytoremediering med perenn solros i åkerjord." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-46262.
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Inledning: Jordar förorenade med höga halter giftiga metaller till följd av antropogen verksamhet förekommer på flera platser på jorden och kan utgöra hälsorisk för både människor, djur och miljö. Därför finns orsak att se på miljövänliga metoder för sanering av förorenad mark. Då konventionella saneringsmetoder där jorden förflyttas från platsen ofta är mycket kostsamma och riskerar störa ekosystemen i hög grad är fytoremediering en metod med stor potential, vilken går ut på att rena mark eller vatten med växter. Studier har bland annat gjorts där annuell solros visat sig användbar för rening mark. Däremot verkar inga studier finns för perenn solros förmåga att ackumulera metaller från mark. Syfte: Syftet med studien är att undersöka perenn solros H. maximilianis upptag av metaller från jord hämtad från en åker i Mellansverige, samt att kvantifiera och kemiskt karakterisera metallerna i jorden. Frågeställningen studien ämnar besvara är om solrosen H. maximiliani lämpar sig för fytoremediering av metallförorenad mark. Metod: Perenn solros av sorten Helianthus maximiliani såddes i jord hämtad från en åker i Mellansverige och placerades i ett klimatreglerat växthus på Örebro universitet. Frön såddes samtidigt i såjord och vermiculit för senare omplantering till krukor med åkerjorden. Åkerjorden analyserades innan sådd på syralakbar halt metaller samt på växttillgänglig, reducerbar och oxiderbar halt. Plantorna skördades vid två tillfällen varpå metallinnehållet mättes för olika växtdelar. Jorden analyserades efter skörd. Metallanalysen gjordes i IPC-MS Agilent 7500 cx. Resultaten analyserades utifrån en signifikansnivå på 5 % och plantans ackumuleringseffektivitet beräknades och bedömdes utifrån BCF (bioconcentration factors). Resultat och slutsats: H. maximilianis tillväxt i åkerjorden var låg. Möjligtvis på grund av låg syrehalt och/eller lågt pH i jorden. H. maximiliani tog effektivt upp metaller som V, Cr, Co, Ni, Cu, Zn, Sr, Mo, Cd, Ba och Tl från den växttillgängliga fraktionen i marken till blad och stjälk. För att i realiteten kunna använda den perenna solrosen H maximiliani som fytoremedieringsgröda krävs högre tillväxt än vad som åstadkommits i studien. Åkerjorden från Kvinnersta innehöll halter av Cd, Cu, Zn och Ni högre än riktvärdena för acceptabel nivå innan slamgödsling bör ske, samt halter som översteg eller gränsade till riktvärdena för högsta acceptabla nivå för känslig markanvändning för metallerna As, Ba, Cd, Cu, och Zn. Halten uran var mellan cirka 5 och 50 gånger högre än den genomsnittliga uranhalten för jordar i Europa. De metaller av dem som förekom i hög halt i jorden (jämfört med Naturvårdsverkets gränsvärden för känslig markanvändning, samt gräns vid slamgödsling) som H. maximiliani inte tog upp effektivt var As, Pb och U.
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Sequeira, Filipa Isabel Dias Correia. "O perene e o efémero na reabilitação." Master's thesis, Universidade de Lisboa. Faculdade de Arquitetura, 2015. http://hdl.handle.net/10400.5/12461.
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Dissertação de Mestrado em Arquitetura, com a especialização em Interiores e Reabilitação do Edificado apresentada na Faculdade de Arquitetura da Universidade de Lisboa para obtenção do grau de Mestre.Luz, Cor e Matéria são os conceitos base da concepção do projecto. É através deles que a análise teórica e a criação projectual se desenvolvem. Estes apresentam características perenes e efémeras, e é a pensar nas relações que se estabelecem entre estes conceitos que se pretende chegar a uma interessante solução de intervenção. E são estes os conceitos aqui aplicados que suportam toda a fundamentação projectual. O objecto de estudo é um antigo palacete, localizado no largo do Intendente, em Lisboa. Aí, procura-se intervir num palacete cujo interior foi demolido, restando apenas a fachada principal e uma fachada lateral. A nova intervenção pretende criar um novo edifício tendo em consideração a utilização dos conceitos de luz, cor, matéria reflectindo as suas propriedades perenes e efémeras. É com estas propriedades em consideração que se pretende que o edifício projectado possa ter diferentes usos e que possa ser adaptado às diferentes necessidades dos utilizadores. O palacete, originalmente pombalino, é concebido com um programa de habitação temporária, especializado para trabalhadores executivos. Procura-se assim um programa diferenciado com unidades de alojamento temporário, espaços de trabalho, reuniões, conferências, um auditório, um restaurante e um lounge de apoio aos espaços destinados ao uso público e ao uso privado. O projecto é desenvolvido na procura de um equilíbrio entre a pré-existência (fachada frontal) e a adição no novo bloco edificado que se encontra escondido por detrás desta fachada. É através dos elementos luz, cor e matéria que se define o espaço. A matéria foi a que obteve maior notoriedade na concepção deste projecto, uma vez que é nela que assentam os pressupostos do problema, quer seja através da cor dos materiais, como nas suas propriedade perenes e efémeras para a criação dos espaços.
ABSTRACT: Light, Colour and Matter are the basic concepts of project designing. It is through them that the theoretical analysis and the project creation develops. These feature perennial and ephemeral characteristics, and is thinking about the relationships established between these concepts that aims to reach an interesting intervention solution. And these are the concepts applied here to support all project-basis. The object of study is a palace, located in Largo do Intendente in Lisbon. There, it seeks to intervene in a palace whose interior was gutted, leaving only the main facade and a side façade. The new intervention aims to create a new building taking into account the use of the concepts of light, colour, matter reflecting their perennial and ephemeral properties. With these properties in mind that it is intended to plan a building that may have different uses and can be adapted to the different needs of users. The palace, originally from the pombalino time, is designed with a temporary housing program for executives’ specialized workers. So it is looking for a unique program with temporary housing units, workspaces, meetings, conferences, an auditorium, a restaurant and a lounge to support spaces for public use and private use. The project is developed in the search for a balance between the pre-existence (front facade) and adding the new built block that is hidden behind this facade. It is through the elements, light, colour and matter that the space is defined. The matter was the one with greater renown in the design of this project, since it is based on it that the assumptions of the problem, whether through the colour of materials and in its perennial and ephemeral property for the creation of spaces.
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Pintó, Pagès Esther. "Anàlisi Bioquímica i Quimiomètrica dels diferents factors implicats en el desenvolupament del cor marró i del llocat de la Pera Blanquilla." Doctoral thesis, Universitat de Lleida, 2003. http://hdl.handle.net/10803/8209.
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El cor marró i la descomposició interna o llocat són dues importants alteracions fisiològiques que apareixen en la pera Blanquilla durant el període de frigoconservació. Aquests dos desordres es caracteritzen primer per l'enfosquiment del cor i després de la polpa. En el llocat aquest enfosquiment és de tipus humit i s'estén de forma ràpida a la totalitat de la polpa. En el cas del cor marró, la polpa presenta un aspecte sec i en aquesta hi ha grans i abundants cavitats.Encara es desconeixen els factors causants de l'aparició d'aquests dos desordres i els principals mecanismes bioquímics implicats en el seu desenvolupament. L'objectiu d'aquesta tesi ha estat conèixer aquests factors i caracteritzar la via o vies bioquímiques implicades en el desenvolupament del cor marró i del llocat en peres Blanquilla. Concretament, s'ha estudiat com incideixen en la seva aparició una alta concentració de CO2 i el grau de maduresa a la collita. Per a cadascuna d'aquestes condicions es va mesurar la incidència i la severitat del cor marró i del llocat, els productes i els enzims associats amb els metabolismes fermentatiu i antioxidatiu, així com el grau de peroxidació de les membranes. Finalment, es va utilitzar l'anàlisi multivariant per a caracteritzar i diferenciar aquestes dues alteracions en funció dels paràmetres esmentats. A més, amb les tècniques multivariants es pretenia complementar i confirmar els resultats interpretats bioquímicament.
Les dues alteracions van aparèixer en l'atmosfera controlada (AC) d'alt contingut de CO2 però ambdues es van diferenciar en el temps d'aparició. El llocat va aparèixer aproximadament als tres mesos de conservació mentre que el cor marró es va manifestar després d'aquesta data. A més, el llocat també es va presentar en l'atmosfera de fred normal però al final del període de conservació. Els fruits conservats en AC d'alt nivell de CO2, al principi es van caracteritzar per una important disminució de l'àcid ascòrbic (AA) i, posteriorment, per un major estat de peroxidació de les membranes respecte a les altres dues atmosferes. El cor marró és conseqüència dels danys oxidatius que es donen en condicions d'alt CO2 (baix contingut d'AA i insuficient activitat dels enzims antioxidants, ascorbata peroxidasa i catalasa). En canvi, el llocat implica majoritàriament el metabolisme fermentatiu i està altament relacionat amb l'activitat de l'enzim alcohol deshidrogenasa i el contingut d'acetaldehid. També hi intervenen altres metabolismes com l'oxidatiu però en menor grau d'implicació que en el cor marró. L'anàlisi multivariant va confirmar els resultats obtinguts en l'anàlisi bioquímica: el cor marró i el llocat són dos desordres diferents que impliquen vies metabòliques similars però amb diferent grau d'implicació. Els models de predicció construïts a partir dels paràmetres de qualitat indiquen que cap d'aquests paràmetres no pot ser utilitzat com a marcador per a predir o detectar el cor marró i/o el llocat. En canvi, el contingut d'AA pot utilitzar-se com a marcador del cor marró. Aquest desordre es dóna quan s'arriba al contingut llindar d'AA que determina l'inici del desenvolupament però, aquest valor està encara per determinar en peres Blanquilla. Un avançat estat de maduresa a la collita i una atmosfera amb un alt contingut de CO2, determinen l'aparició del cor marró i incrementen les pèrdues d'AA, probablement degudes a la reducció de la seva capacitat antioxidant.
El corazón pardo y la descomposición interna son dos importantes alteraciones fisiológicas que aparecen en la pera Blanquilla durante su período de conservación. Estos dos desórdenes fisiológicos se caracterizan, primero, por un empardecimiento del corazón y, posteriormente, por el de la pulpa. En la descomposición interna este empardecimiento es de tipo húmedo y se extiende rápidamente a toda la pulpa. En cambio, en el corazón pardo los tejidos presentan un aspecto seco con grandes y abundantes cavidades en la pulpa.
Se desconocen aún los factores causantes de la aparición de los dos desórdenes y los principales mecanismos bioquímicos implicados en su desarrollo. El objetivo de esta tesis ha sido conocer estos factores, así como caracterizar la vía o vías bioquímicas implicadas en el desarrollo del corazón pardo y de la descomposición interna en peras Blanquilla. Concretamente, se ha estudiado cómo inciden en su aparición una alta concentración de CO2 y el grado de madurez a la cosecha. Para cada una de estas condiciones se determinó la incidencia y la severidad de cada alteración, los productos y las enzimas asociadas con el metabolismo fermentativo y antioxidativo, así como el grado de peroxidación de las membranas. Finalmente, se utilizó el análisis multivariante para caracterizar y diferenciar las dos alteraciones en función de los parámetros citados. Además, con las técnicas multivariantes se pretendía complementar y caracterizar los resultados interpretados bioquímicamente. Las dos alteraciones aparecieron en la atmósfera controlada (AC) de alto nivel de CO2, pero se diferenciaron en el tiempo de aparición. La descomposición interna apareció aproximadamente a los tres meses de conservación, mientras que el corazón pardo se manifestó con posterioridad a esta fecha. Además, la descomposición interna también se presentó en la atmósfera de frío normal, pero al final del período de conservación. Los
frutos conservadoss en la AC de alto nivel de CO2, al principio se caracterizaron por una importante disminución del ácido ascórbico (AA) y, posteriormente, por un mayor estado de peroxidación de las membranas respecto a las otras dos atmósferas. El corazón pardo es consecuencia de los daños oxidativos que se dan en condiciones de alto CO2 (bajo contenido de AA e insuficiente actividad de las enzimas antioxidantes, ascorbata peroxidasa y catalasa). En cambio, la descomposición interna está altamente relacionada con la enzima alcohol deshidrogenasa y el contenido de acetaldehido y, por tanto, implica mayoritariamente el metabolismo fermentativo. Además, en su desarrollo intervienen otros metabolismos, como el oxidativo, pero en menor grado que en el corazón pardo. El análisis multivariante confirmó los resultados obtenidos en el análisis bioquímico: que el corazón pardo y la descomposición interna son dos desórdenes fisiológicos distintos que implican vías metabólicas similares, pero con diferente grado de implicación. Los modelos de predicción construídos a partir de los parámetros de calidad indican que ninguno de estos parámetros puede utilitzarse como marcador para predecir y/o detectar ni el corazón pardo ni la descomposición interna. En cambio, el contenido de AA sí puede utilizarse como marcador del corazón pardo. Esta alteración se manifiesta cuando el contenido de AA disminuye por debajo de un determinado nivel, valor que en peras Blanquilla aún está por determinar. Un avanzado estado de madurez a la cosecha y una AC de alto contenido de CO2 determinan la aparición del corazón pardo e incrementan las pérdidas de AA, probablemente debidas a la reducción de su capacidad antioxidante.
Brown heart and core browning are two important post harvest disorders that occur in Blanquilla pear during storage. These two disorders are characterised by browning first the core and later the flesh. Core browning appears as brown areas in the mid-cortex of the flesh and the lesions subsequently tend to extend and may affect the entire pulp. In the case of brown heart, the tissue is dry and large and/or numerous cavities are formed in the pulp.
The factors and the underlying biochemical mechanisms involved in the development of these disorders remain unclear. The aim of this thesis was to determine and characterise the biochemical pathways involved in the development of brown heart and core browning in Blanquilla pears. More exactly, we studied the effects of high CO2 concentration and harvest date on the disorders incidence. For each condition, the incidence and the damage percentage for each kind of disorder was correlated with the products and the enzymes involved in fermentative and oxidative metabolism. Multivariate analysis was used to characterise and differentiate the two disorders and was used to complement and confirm the biochemical results. Core browning and brown heart were observed when the fruits were stored at high CO2 concentration but appeared at different time. Core browning appeared first, after 3 months of storage and brown heart later. Fruits kept in air developed core browning but at the final of storage. Fruits stored at high CO2 concentration, exhibited first an important decrease in ascorbate level (AA), and later lipid peroxidation. Brown heart is the consequence of oxidative damage which appeared at high CO2 (low level of ascorbate and insuficient activity of antioxidants enzymes, ascorbate peroxidase and catalase). In contrast, core browning correlated with alcohol deshidrogenase activity and acetaldehyde content, a result that showed that fermentation is probably an underlying metabolism in the core browning incidence. Oxidative process could also be involved in core browning, but to a lesser extent than in brown heart. Multivariate analysis confirm these biochemical results and indicate that core browning and brown heart are two different disorders involving similar metabolic pathways but at a different level. According to the prediction model obtained using quality parameters, we conclude that none of these parameters may predict brown heart and core browning disorders. However, the AA level can be a marker of brown heart. This disorder is initiated when an AA dropped below a certain threshold, which remain to be determined in Blanquilla pears. Advanced maturity of fruits at harvest and storage in high CO2 determine the appearance of brown heart and increase the loss of AA, perhaps through a reduction in antioxidant capacity.
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Vaidergorn, Izaak. "(Ar)risc(ar) : a perene alquimia do abrigar." [s.n.], 2003. http://repositorio.unicamp.br/jspui/handle/REPOSIP/284893.
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Orientador: Ernesto Giovanni BoccaraDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Artes
Made available in DSpace on 2018-08-03T18:50:12Z (GMT). No. of bitstreams: 1 Vaidergorn_Izaak_M.pdf: 55892175 bytes, checksum: 11c8251a19420eb1fded7b31817da6a6 (MD5) Previous issue date: 2003
Resumo: Vivemos a era da anestésica. O espaço caótico, a estética alienante, a hipertextualidade tornaram o homem des-abrigado, simbolicamente. Abrigá-lo significa permiti-lo que habite novamente suas idéias e seus sonhos estesicamente, com sentimento, recuperando dessa forma seu arquétipo ancestral de (AR)riscar. Viver e fazer é sempre um risco
Abstract: We lived the era of anaesthesia. The chaotic space, the alienating aesthetics, the hypertextuality turned the men uncovered, un-sheltered. To shelter him again means allow him to inhabts their ideas and their dreams recovering in his ancestral way the archetype of risk. Live and do is always a risk
Mestrado
Mestre em Artes
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Hass, Juliana. "Fumaça! Fumaça! Fumaça! O código de Perelá: a leveza do romance futurista de Aldo Palazzeschi." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/8/8148/tde-18062013-101439/.
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Os objetivos principais da presente pesquisa são apresentar o romance futurista Il Codice di Perelà, de Aldo Palazzeschi, fazer o cotejo entre os originais da primeira (1911) e da última (1958) edições desta obra, para garantir um ponto de vista privilegiado sobre o romance e sua evolução ao longo do tempo, e propor, em anexo, a versão brasileira do romance publicado em 1911: O Código de Perelá. Palazzeschi é um autor que sempre apresenta novidades, não raro subvertendo a matéria da tendência poética e literária ou do movimento do qual se aproxima, o que conduz a novas formas. Com isso, tornam-se evidentes a independência e as características peculiares do autor, se comparado aos seus contemporâneos. A narrativa do Il Codice di Perelà é realizada predominantemente por meio de breves diálogos conduzidos por várias vozes, com ritmos rápidos e dissonantes, conferindo à obra um caráter teatral. Por outro lado, o protagonista, precisamente por ser bastante diferente do gênero humano, apenas com sua presença imprime ao texto um tom fabular, além de fazer com que a história adquira características épicas. Ademais, a supremacia da síntese, do dinamismo, da compenetração e da velocidade, expressos com palavras essenciais e em liberdade, o uso de onomatopeias, de concisão, de justaposição de estilos, todos esses elementos heterogêneos que ainda assim resultam em um texto harmonioso ao conferir originalidade à estrutura do romance, também o ligam aos valores mais caros ao Futurismo, sobretudo no que diz respeito ao Manifesto técnico da literatura futurista. Por fim, o estudo mostra, também, como este romance coloca em prática, ao longo de sua narrativa, os preceitos do Manifesto palazzeschiano Il controdolore.The main objectives of this research are to present Aldo Palazzeschis futuristic novel Il Codice di Perelà, make the comparison between the first (1911) and last (1958) original editions of this work to ensure a privileged point of view over the romance and its evolution over time and proposes, attached, the Brazilian version of the novel: O Código de Perelá. Palazzeschi is an author that he always presents news, often subverting the subject of poect and literary trend or of movement to which he approaches, leading to new forms. Hence the independence and the peculiar characteristics of the author become apparent if compared to his contemporaries. The Il Codice di Perelà narrative is accomplished mainly through short dialogues from various voices, with fast and dissonant rhythms, granting the work a theatrical tone. In the other hand, the protagonist, precisely because of his difference among mankind, just his presence adds to the book a fable tone, besides making the story to acquire epic characteristics. Furthermore, the synthesis supremacy, the dynamism, the interpenetration and speed, expressed with essential words and freely, the use of onomatopoeia, the brevity, the juxtaposition of styles, all these heterogeneous elements - which still result in a matching text - imprint originality to the novel structure, also bind it with the most important Futurism values, especially with regard to the technical Manifesto of Futurist literature. Finally, the study also shows how this novel puts into practice throughout its narrative, the precepts of the Manifesto palazzeschiano, Il Controdolore.
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Goorhuis, Jolande. "0.25 [percent] and 0.4 [percent] amine fluoride gel for topical application /." [S.l : s.n.], 1986. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.
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Morante, Vargas Sandra, and Carrasco Diego Rogger Gonzales. "Elaboración de Mapas de Erosión en la Cuenca del Río Perené." Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2019. http://hdl.handle.net/10757/625315.
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El presente estudio describe la elaboración de mapas de erosiones. La cuenca del Río Perené cuenta con amplio territorio, abarca al departamento de Junín y parte del departamento de Cerro de Pasco. Se escogió dicha cuenca, debido que es propensa a precipitaciones intensas y, por ende, a deslizamientos de tierra que conllevan en muchos casos a bloqueos de carreteras, pérdidas humanas, ganado, y de cultivos que merman en el flujo económico.
Para la elaboración del mapa de erosión, por su simplicidad y gran aproximación a la realidad se usó la metodología del USLE. En extracto, dicha metodología cuantifica la pérdida de suelos, la cual se obtiene del producto de 6 factores, cada factor a su vez es obtenido mediante distintas metodologías. Los factores para el presente método USLE son: factor K (erodabilidad del suelo), el factor R (Erosión hídrica), factor C (cobertura del suelo), factor LS (factor longitud pendiente) y el factor P (conservación del suelo); y el producto construirá a la metodología USLE.
Cada factor se obtiene de distintas maneras, algunos con métodos matemáticos teniendo una base de información y recolección de imágenes satelitales que se obtienen mediante servidores de la NASA y Japón. Cada factor se importa al programa ARC-GIS el cual nos da por cada factor un respectivo mapa. El producto de los factores nos brindará un mapa general, donde nos mostrará las zonas más propensas a erosión. Dicha información será de suma importancia para la gestión de Gobiernos Regionales y Municipalidades, para prevenir los recurrentes accidentes.The present study, as its name describes, is the elaboration of erosion maps. The Río Perené basin has a wide territory, which mostly covers the department of Junín and, to a lesser extent, part of the department of Cerro de Pasco. This basin was chosen, because for years this place is prone to intense rainfall and therefore to landslides that in many cases lead to road blocks also human losses, livestock, and crops that diminish the capacity of commercial flow of the country. For the elaboration of the erosion map, there are different methods for its realization, for its simplicity and great approximation to reality it was decided to make use of the USLE methodology. In extract, this methodology quantifies the loss of soils, which is obtained by the product of 6 factors, each factor in turn is obtained by different methodologies. The factors for the present USLE method are: K factor (soil erosion), the R factor (precipitation erosivity), C factor (coverage or soil management), LS factor (slope length factor) and finally the P factor (soil conservation), the synergy of these factors will build the USLE methodology. Each factor is obtained in different ways, some with mathematical methods having an information base and others by collecting satellite images obtained through servers from NASA and Japan. Each factor is imported into the ARC-GIS program which gives us a respective map for each factor. Finally, the product of all maps results in the final map of soil loss in the basin.
Tesis
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Liu, Jianyang. "Morphological and genetic variation within perennial ryegrass (Lolium perenne l.)." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1127245394.
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Thesis (Ph. D.)--Ohio State University, 2005.Title from first page of PDF file. Document formatted into pages; contains xiii, 123 p.; also includes graphics (some col.). Includes bibliographical references (p. 99-107). Available online via OhioLINK's ETD Center
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Chan, Kwok-kuen. "Anthropogenic versus natural influences on the genetic structure of the green mussel Perna Viridis (L.) in Hong Kong /." Hong Kong : University of Hong Kong, 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20665866.
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Solari, Ruiz-Eldredge Oscar Augusto. "Aspectos de la deixis espacial en la lengua asháninka del Alto Perené." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2020. https://hdl.handle.net/20.500.12672/14203.
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Estudia los aspectos más importantes de las nociones que emplean los hablantes del dialecto del Alto Perené de la lengua ashéninka para la orientación en el ambiente en cuanto al espacio y su relación con la distancia y la posición. La descripción y el análisis de estas estructuras que guían la orientación en el espacio están dentro de un enfoque sincrónico y están basadas en los datos recogidos entre 2014 y 2018 en tres comunidades nativas asháninka ubicadas en la provincia de Chanchamayo, en el departamento de Junín. La deixis espacial en ashéninka se expresa a través de posposiciones adverbiales graduadoras de distancia, pronombres demostrativos y adverbios posicionales, incluyendo aquellas partículas que semánticamente tienen como puntos de referencia dimensiones naturales como el cielo, el suelo y el río; además de un verbo direccional que funciona como deíctico, permitiendo que el hablante se oriente dentro del ambiente donde habita. La orientación se origina desde la consciencia del emisor con respecto a su ubicación dentro del espacio, generándose al mismo tiempo un plano de referencia. Posteriormente esta noción se complementa con la consciencia del emisor sobre el ente referido, partiendo desde su ubicación, posición y distancia en la que este se halla desde el plano referencial del emisor o de otro referente; el segundo solo si fuera dentro de un contexto narrativo.Tesis
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Medina, Gutiérrez Pedro Alvaro. "Estudio descriptivo de la frase nominal en el asháninka del Alto Perené." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2011. https://hdl.handle.net/20.500.12672/1228.
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La presente investigación descriptivo-lingüística titulada “Estudio descriptivo de la frase nominal en el asháninka del Alto Perené” tiene por objetivo determinar la estructura composicional [NÚCLEO-MODIFICADOR] de la frase nominal (FN) en el asháninka del Alto Perené, a partir del análisis de un corpus de oraciones (de dicha variedad lingüística con FN en su interior), recolectados de dos tipos de fuentes: de trabajo de campo y documental. El marco teórico que sustenta este estudio proviene de los postulados de la Gramática Estructural complementada por la Gramática Funcional referentes a la frase (o sintagma) nominal y el término.
El análisis consta de la segmentación morfológica de las oraciones que constituyen nuestro corpus, ubicación de las frases nominales al interior de ellas, y clasificación y análisis de éstas (FN), en cuanto a su composición estructural, para luego confrontarla con nuestra hipótesis y validarla, la cual cita: “una frase nominal puede estar constituida por una estructura simple (dentro de la relación modificador directo + núcleo) o una estructura compleja (dentro de la relación núcleo + modificador indirecto). Donde el núcleo podría ser un nombre, pronombre o cláusula relativa; el modificador directo, un adjetivo, numeral, demostrativo o posesivo y el modificador indirecto, una construcción genitiva o cláusula relativa.”Tesis
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Correa, Aste Norma Belén. "ASHÁNINKA ONLINE: ¿nuevas tecnologías, nuevas identidades, nuevos liderazgos? Una aproximación antropológica a la relación de la Comunidad Indígena Asháninka Marankiari Bajo con las tecnologías de la información y de la comunicación." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2006. http://hdl.handle.net/20.500.12404/16209.
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Bissonnette, Jean-Pierre. "Percent depth doses for diagnostic radiology." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60566.
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A new model is proposed for the calculation of relative depth doses for diagnostic radiology using a direct photon transport/ray tracing technique which incorporates both primary and first scatter dose. The x-ray spectra are generated from computer algorithms based on the Birch and Marshall semi-empirical model; the spectra are established by matching calculated and measured transmission data. The algorithms for the generation of x-ray spectra and for the calculation of depth doses are described. Relative depth doses are determined for a number of radiographic techniques. The calculations are compared with measured and published depth doses; the agreement is very good for tube voltages below 90 kV$ sb{ rm p}$. It is suggested that relative integral doses obtained from relative depth doses give an accurate representation of risk reductions obtained with different radiological techniques. The integral dose reductions predicted by the model are within 8.5% of those from measured data.
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Perner, Iris [Verfasser]. "Scale-Down von Photobioreaktoren / Iris Perner." Aachen : Shaker, 2004. http://d-nb.info/1170544134/34.
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Kessler, Eli Mikael. "One Hundred and Fifty Percent Elasticity." VCU Scholars Compass, 2008. http://scholarscompass.vcu.edu/etd/649.
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The sculptural environments I create immerse the viewer in a decrepit vaudevillian past. The sculptures allude to narratives within Community Theater as well as the Drag Show. Making becomes an act; manipulating materials such as synthetic hair and paint are associated with the guise of the makeup artist. Frantic rehearsal logic prevails as a dress is repurposed into a male giant's costume and window blinds are used to construct a boat's deck. This collusion asks the viewer to transgress the boundary of the stage, becoming a voyeur privileged to the world of exiled props and role reversal.
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Perez-Osorio, Ailyn Cecilia. "Quantative assessment of localized growth rates and gene expression patterns in Pseudomonas aeruginosa biofilms." Diss., Montana State University, 2009. http://etd.lib.montana.edu/etd/2009/perez-osorio/Perez-OsorioA0509.pdf.
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This dissertation work provides evidence of heterogeneity in the distribution of gene expression and growth rates among surface associated cells of Pseudomonas aeruginosa. Currently, methodologies used for characterizing biofilm heterogeneity are constrained by the need of in vitro biofilm growth and by the need to genetically manipulate bacteria. This dissertation describes findings obtained by using LCMM, qRT-PCR, qPCR and microarrays. Through combining LCMM with qRT-PCR a housekeeping gene and two quorum sensing induced genes were found to be differentially expressed at the periphery of P. aeruginosa biofilms. qPCR also enabled the growth rate of cells in discrete locations of biofilms to be determined. Cells localized to the deep layers of biofilms were found in a growth state analogous to stationary phase in planktonic cultures, while cells localized to the biofilm periphery were slightly more active with growth rates that approached cells growing exponentially in planktonic cultures. By elucidating the growth rates of subpopulations within the biofilm it was subsequently possible to determine that the most active cells had approximately 7 copies of the mRNA of housekeeping and stationary phase associated genes. Each of the least active cells, those found in the deeper sections of the biofilms, had less than one copy of any of the mRNAs measured. No significant differences in the distribution of 16S rRNA were found along the sections analyzed. The microarray studies revealed several genes, known to be involved in the pathogenesis of P. aeruginosa, to be undergoing active transcription in young biofilms under conditions of low calcium concentrations. This is significant because calcium homeostasis is known to be out of balance in the lungs of cystic fibrosis patients, where P. aeruginosa biofilms grow causing life threatening infections. These results suggest that spatial and temporal heterogeneity within biofilms underscores their ability to not only survive in diverse and sometimes harsh environmental conditions, but to exploit those environments. The methods described in this work are suitable for characterizing heterogeneity of gene expression and growth rate in biofilms collected from their natural environment. These also represent an alternative method for assessing the distribution of populations in multispecies biofilms.
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Perez-Osorio, Ailyn Cecilia. "Quantative assessment of localized growth rates and gene expression patterns in Pseudomonas aeruginosa biofilms." Thesis, Montana State University, 2008. http://etd.lib.montana.edu/etd/2008/perez-osorio/Perez-OsorioA1208.pdf.
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This dissertation work provides evidence of heterogeneity in the distribution of gene expression and growth rates among surface associated cells of Pseudomonas aeruginosa. Currently, methodologies used for characterizing biofilm heterogeneity are constrained by the need of in vitro biofilm growth and by the need to genetically manipulate bacteria. This dissertation describes findings obtained by using LCMM, qRT-PCR, qPCR and microarrays. Through combining LCMM with qRT-PCR a housekeeping gene and two quorum sensing induced genes were found to be differentially expressed at the periphery of P. aeruginosa biofilms. qPCR also enabled the growth rate of cells in discrete locations of biofilms to be determined. Cells localized to the deep layers of biofilms were found in a growth state analogous to stationary phase in planktonic cultures, while cells localized to the biofilm periphery were slightly more active with growth rates that approached cells growing exponentially in planktonic cultures. By elucidating the growth rates of subpopulations within the biofilm it was subsequently possible to determine that the most active cells had approximately 7 copies of the mRNA of housekeeping and stationary phase associated genes. Each of the least active cells, those found in the deeper sections of the biofilms, had less than one copy of any of the mRNAs measured. No significant differences in the distribution of 16S rRNA were found along the sections analyzed. The microarray studies revealed several genes, known to be involved in the pathogenesis of P. aeruginosa, to be undergoing active transcription in young biofilms under conditions of low calcium concentrations. This is significant because calcium homeostasis is known to be out of balance in the lungs of cystic fibrosis patients, where P. aeruginosa biofilms grow causing life threatening infections. These results suggest that spatial and temporal heterogeneity within biofilms underscores their ability to not only survive in diverse and sometimes harsh environmental conditions, but to exploit those environments. The methods described in this work are suitable for characterizing heterogeneity of gene expression and growth rate in biofilms collected from their natural environment. These also represent an alternative method for assessing the distribution of populations in multispecies biofilms.
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Sambhara, Chaitanya. "P-Percent Coverage in Wireless Sensor Networks." Digital Archive @ GSU, 2008. http://digitalarchive.gsu.edu/cs_theses/56.
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Coverage in a Wireless Sensor Network reflects how well a sensor network monitors an area. Many times it is impossible to provide full coverage. The key challenges are to prolong the lifetime and ensure connectivity to provide a stable network. In this thesis we first define p-percent coverage problem in which we require only p% of the whole area to be monitored. We propose two algorithms, Connected P-Percent Coverage Depth First Search (CpPCA-DFS) and Connected P-Percent Connected Dominating Set (CpPCA-CDS). Through simulations we then compare and analyze them for their efficiency and lifetime. Finally in conclusion we prove that CpPCA-CDS provides 5 to 20 percent better active node ratio at low density. At high node density it achieves better distribution of covered area however the lifetime is only 5 to10 percent shorter then CpPCA-DFS. Overall CpPCA-CDS provides up to 30 percent better distribution of covered area.
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Bastos, Nildecy de Miranda. "Roberval Pereyr em suas faces e interfaces." reponame:Repositório Institucional da UFBA, 2013. http://www.repositorio.ufba.br/ri/handle/ri/12038.
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Este trabalho discorre sobre a poesia de Roberval Pereyr, destacando alguns aspectos temáticos e algumas características de sua obra poética. Situando o escritor na esteira dos poetas líricos que cantam dissonâncias do mundo moderno, entende-se a poesia como lugar de verificação de questões concernentes à subjetividade do homem, cindido em sua forma de se sentir, perpassado pelos apelos de um racionalismo cada vez mais acentuado. Nosso estudo é um dos muitos caminhos que se delinearam a partir de ramificações do núcleo de pesquisa O escritor e seus múltiplos: migrações, na área de Teorias e Crítica da Literatura e da Cultura, no Programa de Pós-Graduação em Letras e Linguística da Universidade Federal da Bahia. Parte-se de uma visão geral sobre a produção lírica do escritor e, num confronto com argumentos teóricos expressos pelo mesmo no seu ensaio A unidade primordial da lírica moderna, observam-se alguns trânsitos realizados pelo artista entre o campo da teoria e o campo da criação, sendo que este último, que aqui nos interessa em primeiro plano, revela uma poesia voltada para a ressignificação da existência comum, através da experiência com o ritmo e com a analogia.
Universidade Federal da Bahia. Instituto de Letras. Salvador-Ba, 2009.
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Mitchell, Steve. "PERCEPTIONS OF FACULTY ON QUALITY BENCHMARKS IN INTERACTIVE VIDEO AND WEB BASED DISTANCE LEARNING." University of Akron / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1134491704.
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Krock, Valerie Anne. "An absent witness the affects of trauma on memory, identity, and autobiography in George Perec's Je suis né and W ou le souvenir d'enfance /." Oxford, Ohio : Miami University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=miami1154639406.
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Thiessen, Craig B. D. "Antibacterial efficacy of 0.12-percent and 2.0-percent chlorhexidine gluconate at 37° C and 46° C against Enterococcus faecalis." Connect to resource online, 2010. http://hdl.handle.net/1805/2226.
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Thesis (M.S.D.)--Indiana University School of Dentistry, 2010.Title from PDF t. p. (viewed July 28, 2010) Advisor(s): Mychel Vail, Chair of the Research Committee, Richard Gregory, Joseph Legan, Kenneth Spolnik, Susan Zunt. Curriculum vitae. Includes abstract. Includes bibliographical references (leaves 108-120).
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Manfredini, Daniel. "Cálcio e boro para soja-perene: características anatômicas e agronômicas e concentração de nutrientes." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/11/11140/tde-15072008-125744/.
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Leguminosas forrageiras têm sido consorciadas com capins, e contribuído com a sustentabilidade do sistema solo-planta-animal. A soja-perene (Neonotonia wightii) é uma das leguminosas forrageiras bem adaptadas ao cultivo em áreas tropicais. A aplicação de cálcio e boro tem resultado em benefícios ao desenvolvimento da planta, especialmente para as espécies leguminosas. Este trabalho objetivou verificar os efeitos de combinações de cálcio e de boro para a soja-perene na morfofisiologia da planta, produção, concentração mineral, concentração de carboidratos na parede celular, em alterações anatômicas nos tecidos foliares e sintomas visuais. Foi conduzido um experimento em casa de vegetação com plantas de soja-perene cultivadas em solução nutritiva em vasos plásticos contendo quartzo moído como substrato. Empregou-se o delineamento de blocos ao acaso, e um esquema fatorial 52 incompleto, perfazendo um total de 13 combinações de doses de cálcio e boro. As plantas foram submetidas a dois períodos de crescimento. O primeiro corte das plantas foi realizado 46 dias após o transplante das mudas e o segundo 38 dias após o primeiro. O ponteiro (três folhas trifolioladas completamente expandidas contadas a partir do ápice) foi separado da porção inferior da planta (restante do tecido vegetal) e das raízes que também foram coletados. A interação cálcio x boro foi significativa apenas para a concentração de cálcio na porção inferior da soja-perene. As doses de cálcio alteraram a área foliar, as concentrações de cálcio, magnésio e potássio nos tecidos vegetais amostrados, e as concentrações de carboidratos na parede celular da planta. As doses de boro alteraram a produção, comprimento e superfície das raízes, as concentrações minerais nos tecidos analisados e as concentrações de carboidratos na parede celular das folhas. As combinações de baixas ou altas doses de cálcio e de boro promoveram alterações nas características anatômicas da soja-perene. Com o suprimento de boro de 10 mmol L-1 na solução nutritiva as plantas apresentaram deformações nas folhas novas e desenvolvimento anormal do sistema radicular.Forage legumes have been mixed with grasses and contributed to improve the sustainability of the soil- plant- animal system. Perennnial soybean (Neonotonia wightii) is one forage legume well adapted to the tropical areas. Calcium and boron have resulted in benefits for plant development, particularly in legume species. This study was set with the objectives of verifying the effects of calcium and boron combinations for perennial soybean in plant morphophysiology, production, mineral concentrations, carbohydrate concentrations in cell wall, anatomical changes in leaf tissues and visual symptoms. A greenhouse experiment was carried out with plants grown in plastic pots containing ground quartz and supplied with nutrient solutions. An incomplete factorial 5 x 5, with 13 combinations of calcium and boron rates, was set in randomized block design. Plants were harvested twice, the first harvest one at 46 days after seedlings transplanting to the pots and the second harvest at 38 days after the first one. The upper part (three completely expended leaves) was separated from the lower part of plant tops and roots that were collected too. Calcium x boron interaction was only significant for the calcium concentration in the lower part of perennial soybean. Calcium rates changed leaf area, concentrations of calcium, magnesium and potassium in the sampled plant tissues, and carbohydrate concentrations in the cell wall of perennial soybean. Boron rates influenced changes in roots (dry matter, length and surface), mineral concentrations and carbohydrate concentrations in leaves cell wall. High or low rates of both calcium and boron had resulted in changes in anatomical characteristics of perennial soybean. When boron was supplied at 10 µmol L-1 plants presented deformed new leaves and abnormal root system growth.
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Perner, Juliane [Verfasser]. "Bioinformatic approaches for understanding chromatin regulation / Juliane Perner." Berlin : Freie Universität Berlin, 2015. http://d-nb.info/1077007221/34.
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Barrett, S. K. "Growth regulators in Lolium perenne grown for seed." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378463.
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Huang, Ji-Wei. "Wear tolerance in perennial ryegrass (Lolium perenne L.)." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389474.
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Meharg, Andrew Alexander. "Factors affecting rhizosphere carbon-flow in Lolium perenne." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU031803.
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The dynamics of root carbon have been studied on a limited number of plants under a limited range of environmental conditions. This is particularly true of temperate pasture grasses. It was proposed to investigate rhizosphere carbon flow within Lolium perenne, to determine environmental factors affecting root exudation and root respiration. A number of microcosms were designed in which ryegrass could be pulse labelled with 14C-CO2, and the fate of the label determined within a plant-soil system. A wide range of factors were found to affect the distribution of carbon within the plant and soil under laboratory conditions. These factors include plant stage of development, micro-organisms, temperature, soil pH, soil water stress and soil anaerobism. A field experiment was carried out to estimate rhizosphere carbon flow under 'natural' conditions and to determine if the laboratory studies could be related to field conditions. Results showed that rhizosphere carbon flow varied greatly depending on environmental conditions. It was proposed that the major loss of newly photoassimilated carbon was dominated by root respiration rather than by root exudation. Inoculation with micro-organisms affected carbon loss from plant roots as exudates. The pattern of carbon distribution within the plant and rhizosphere varied greatly depending on the inoculant.
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Martel, Paredes Víctor Arturo. "La reduplicación verbal en el ashaninka del alto Perené desde la teoría de la optimalidad." Master's thesis, Pontificia Universidad Católica del Perú, 2012. http://tesis.pucp.edu.pe/repositorio/handle/123456789/1522.
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Uno de los temas que mayores cuestionamientos ha abierto en los estudios de
morfología es el de la reduplicación por los procesos fonológico-morfológicos que
requieren explicaciones basadas, muchas veces, en propuestas disímiles. En este
estudio, el propósito principal es describir y explicar la reduplicación en la lengua
ashaninka del Alto Perené haciendo uso de la propuesta más pertinente que ayude a
descifrar el proceso que subyace a este mecanismo de la lengua. El meollo central de la
investigación es descifrar cuál es la naturaleza de los elementos que intervienen en el
proceso, su estatus, la interrelación entre fonología y la morfología. Esta propuesta de
análisis de la reduplicación en el ashaninka sigue los lineamientos teóricos de la Teoría
de la Optimalidad (Prince y Smolensky 1991) que ofrece una propuesta acorde a los
procesos morfoprosódicos en las lenguas naturales.Tesis
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Pereira, Camilo Dias Seabra. "Biomarcadores de exposição, efeito e bioacumulação de xenobióticos em mexilhões Perna perna (Linnaeus, 1758) transplantados ao longo do litoral de São Paulo." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/21/21131/tde-24062008-142740/.
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O presente estudo avaliou a exposição, os efeitos e a bioacumulação de xenobióticos em mexilhões Perna perna coletados na Praia da Cocanha (Caraguatatuba - referência) e transplantados para: Engenho d\'Água (Ilhabela), Terminal Almirante Barroso - TEBAR (São Sebastião), Ilha das Palmas e Itaipu (Baía de Santos). Após 3 meses de exposição em cada estação do ano, os mexilhões foram analisados quanto à bioacumulação de metais, HPAs, LABs e a biomarcadores de exposição e efeito. Os organismos fixados na Ilhabela apresentaram concentrações mais elevadas de Cd, Hg, alterações significativas nas atividades de Glutationa Peroxidase (GPx) e Glutationa-S-Transferase (GST), no tempo de retenção do vermelho neutro (TRVN) e no desenvolvimento embriolarval (DE); no TEBAR apresentaram bioacumulação de HPAs, Fe, Co, Cd, alteração na atividade de CYP 450 (DBF), nos danos em DNA, lipoperoxidação e no TRVN; na Ilha das Palmas apresentaram bioacumulação de Co, Fe, Cr, Hg, Pb, LABs e alterações nas atividades de DBF, Catalase, GPx, Glutationa Redutase (GR), TRVN e DE; enquanto que os organismos transplantados para Itaipu acumularam Fe, Co, Cd, Hg, Pb e apresentaram alterações nas atividades de DBF, GPX, GR, GST, danos em DNA, TRVN e DE. A integração dos resultados de biomarcadores e bioacumulação propiciou um melhor entendimento da biodisponibilidade e dos efeitos de contaminantes para a espécie estudada no litoral de São Paulo.The present study aimed to assess the exposure, effects and bioaccumulation ofxenobiotics in the mussel Perna perna transplanted from a clean site (Cocanha Beach, Caraguatatuba) to different sites (Engenho D\'Água Beach - Ilhabela; TEBAR oil terminal - São Sebastião; Palmas Island and Itaipu - Santos Bay). In each season, after 3 months of exposure, the mussels were recollected and their tissues were evaluated for bioaccumulation of metals, PAHs, LABs and biomarkers of exposure and effect. Organisms transplanted to Ilhabela accumulated Cd, Hg and exhibited significant alterations on Glutathione Peroxidase (GPx), Glutathione -S-Transferase (GST), Neutral Red retention time (NRRT) and embryonic development (ED); organisms transplanted to TEBAR accumulated PAHs, Fe, Co, Cd and showed significant differences on CYP 450 (DBF), DNA damage, lipidic peroxidation, NRRT and ED; organisms transplanted to Palmas accumulated Co, Fe, Cr, Hg, Pb, LABs and showed alterations on DBF, Catalase, GPx, Glutathione Reductase (GR), NRRT and ED; whereas organisms transplanted to Itaipu accumulated Fe, Co, Cd, Hg, Pb and exhibited alterations on DBF, GPX, GR and GST activities, DNA damages, NRRT and ED. This integrated assessment of biomarkers and bioaccumulation provided a better comprehension on the bioavailability and effects of contaminants for the studied species in São Paulo shore.
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Rodrigues, Dayane Sereno Baêta. "Poluentes marinhos como fatores de estresse em esponjas e mexilhões." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=3522.
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A biota marinha está exposta a uma elevada quantidade de substâncias
tóxicas que podem causar graves problemas ao ambiente. As esponjas (Porifera) e
os mexilhões (Mollusca) por serem sésseis e filtradores são utilizados como
bioindicadores de poluição. A experimentação com aquários permite a realização de
ensaios controlados, acompanhamento da resposta a diversos poluentes,
concentrações e tempo de exposição. Os objetivos deste estudo foram: I). avaliar a
imunocompetência através da expressão de proteínas do sistema imune Fator
Inflamatório de Enxerto AIF -1 e pP38 por teste de ELISA (do inglês, Enzyme Linked
Immuno Sorbent Assay) em esponjas expostas a poluentes, II) acompanhar a
expressão das proteínas AIF-1 e pP38 nas cinco espécies de esponjas marinhas:
Aplysina fulva (Pallas, 1766), Chondrilla aff. nucula Schimidt, 1862, Dysidea robusta
Vilanova e Muricy 2001, Polymastia janeirensis (Boury-Esnault, 1973) e
Hymeniacidon heliophila (Parker, 1910) após exposição a lipopolisacarídeo (LPS) de
E. Coli III) avaliar a expressão das proteínas AIF-1 e pP38 nas espécies C. aff.
nucula e P. janeirensis após exposição a dodecil sulfato de sódio (SDS) IV) avaliar a
mortalidade de mexilhões quando expostos ao dispersante Triton X-100 e esgoto
doméstico in natura. Os resultados indicam que as esponjas A. fulva, C. aff. nucula,
D. robusta e P. janeirensis expostas a 20 μg/mL de LPS por 30 minutos, uma, três,
24 e 48 horas apresentaram aumento de expressão da proteína AIF-1 em relação ao
controle, com diferentes tempos de resposta para cada espécie. A esponja H.
heliophila exposta a 30 μg/mL de LPS apresentou diferença significativa na
expressão de AIF-1 em relação ao controle na exposição por 30 min, uma, quatro,
24 e 48 horas. Contudo, não houve diferença significativa na expressão de outra
proteína, a quinase pP38, nesses ensaios. As esponjas C. aff. nucula e P.
janeirensis foram expostas a 0,25 mg/L de dodecil sulfato de sódio (SDS) por 24 e
48 horas. C. aff. nucula apresentou aumento da expressão de AIF -1 quando
comparada ao controle em 24 e 48 horas, mas para P. janeirensis não houve
diferença significativa. Os mexilhões Perna perna foram expostos a poluentes de
duas maneiras a detergente Triton X-100 0,10 g/L por três, seis, 12 e 18 horas que
induziu diferença significativa na mortalidade em seis, 12 e 18 horas em comparação
com o controle e a a esgoto doméstico in natura diluído na proporção de 1:50 não
houve mortalidade no tratamento ou no controle. A variação da expressão da
proteína AIF-1 observada nas cinco espécies de esponjas marinhas confirma a
utilização dessa proteína como eficiente biomarcador de estresse. Os mexilhões
foram bons bioindicadores da poluição por detergente.Marine biota is constantly exposed to several toxic substances which may cause severe environmental problems. Sponges (Porifera) and mussels (Mollusca) are often used as pollution bioindicators mainly due to their sessile and filter feeding habits. Laboratory experiments using aquaria enable the performance of controlled assays, following the various responses of animals to different concentrations and types of pollutants, besides of exposure time. The aims of this study were: I) evaluate the immunocompetence using proteins of the immune system Allograph Inflammatory Factor (AIF-1) and Pp38 by ELISA Enzyme Linked Immuno Sorbent Assay in sponges exposure to pollutants II) evaluate the expression of AIF-1 and pP38 at the five species of marine sponges Aplysina fulva (Pallas, 1766), Chondrilla aff. nucula Schimidt, 1862, Dysidea robusta Vilanova e Muricy 2001, Polymastia janeirensis (Boury-Esnault, 1973) e Hymeniacidon heliophila (Parker, 1910) after exposure to Escherichia coli lipopolysaccharide (LPS) III) evaluate the expression of AIF-1 and pP38 in C. aff. nucula and P. janeirensis after exposure to sodium dodecyl sulfate (SDS) IV) evaluate the mortality of mussel Perna perna after exposed to detergent Triton X-100 and domestic sewage The results indicate that A. fulva, C. aff. nucula, D. robusta and P.janeirensis sponges exposed to 20 μg/mL of E. coli LPS during 30 minutes, one, three, 24 and 48 hours presented an increase in AIF-1 expression when compared to controls, at different response times for each species. The sponge H. heliophila exposed to 30 μg/mL of LPS presented a significant difference in the expression of AIF-1 compared to control, in short (30 min, one four hours) and long (24 and 48 hours) time exposure assays, but there were no significant difference in the expression of pP38 protein in any of the assays. Sponges C. aff. nucula and P. janeirensis were exposed to 0.25 mg/L of sodium dodecyl sulfate (SDS) for 24 and 48 hours. C aff. nucula showed increased expression of AIF-1 when compared to the control at 24 and 48 hours. For P. janeirensis there were no significant difference between treatments and controls. Perna perna mussels were exposed to pollutants in two assays. The animals were exposed to the detergent Triton X-100 0.10 g/L for three, six, 12 and 18 hours. There were significant differences in mortality in six, 12 and 18 hours. The mussels were also exposed to domestic sewage diluted in 1:50 proportion. This assay did not induce mortality in the treatment and control. The variation in the expression of AIF-1 protein observed in five species of the marine sponges confirms the efficient use of this protein as a stress biomarker. It was demonstrated that mussels are good bioindicators of detergent pollution.
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Cao, Mingshu. "Molecular cytogenetic analysis of genomes between Festuca mairei and Lolium perenne /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3012953.
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Chen, Caifu. "Molecular genome characterization and introgression in Lolium perenne and Festuca species /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9809676.
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Nilssen, Runa. "The 100 percent American, is after all 100 percent something else : A study of ethnic belonging among Norwegian-Americans in Seattle." Thesis, Norges teknisk-naturvitenskapelige universitet, Sosialantropologisk institutt, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15798.
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Grobis, Iwona Marta. "Development and breakdown of oxide scales on iron-25 percent chromium-20 percent nickel alloys in atmospheres containing oxygen and sulfur." Case Western Reserve University School of Graduate Studies / OhioLINK, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=case1054582569.
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Halvarsson, Linnéa. "Ätbara perenner : Ätbara perenner ur aspekterna; Ätbara perenner kontra ätbara annueller, ätbara perenner i förhållandet till klimatet i odlingszon 5samt ätbara perenner i förhållande till odlingsmetoder motsvarande den i en skogsträdgård." Thesis, Högskolan i Gävle, Avdelningen för elektronik, matematik och naturvetenskap, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-13532.
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Salvator-Witvoet, Véronique. "Les aplasies peronieres : options therapeutiques : a propos de 11 observations." Aix-Marseille 2, 1990. http://www.theses.fr/1990AIX20802.
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Schmid, Susanne. "Shelley's German afterlives, 1814 - 2000 /." New York, NY [u.a.] : Palgrave Macmillan, 2007. http://www.loc.gov/catdir/enhancements/fy0704/2006047154-b.html.
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Puzone, Vladimir Ferrari. "Capitalismo perene: reflexões sobre a estabilização do capitalismo a partir de Lukács e da teoria crítica." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/8/8132/tde-04032015-190248/.
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Esta tese tem por objetivo compreender a estabilização do capitalismo em diversos períodos no século XX, mais especificamente em três obras do que se convencionou chamar de marxismo ocidental, uma vez que elas representam pontos de inflexão da discussão a respeito do assunto: História e Consciência de Classe, de Georg Lukács, Dialética do Esclarecimento, de Max Horkheimer e Theodor W. Adorno, e O Homem Unidimensional, de Herbert Marcuse. Por meio de uma comparação desses livros com os debates a respeito das transformações do capitalismo nos períodos em que cada uma das obras foi escrita, procurou-se entender por quais mecanismos e instituições a sociedade capitalista conseguiu superar suas crises e se naturalizar perante os indivíduos, constituindo-se como segunda natureza e sendo aceita, portanto, como a única forma de sociedade possível. Dessa maneira, seus autores se distinguem daquelas discussões, não apenas retomando e criticando vários de seus aspectos, mas sobretudo por apresentarem explicações e conceitos inovadores diante das mudanças históricas. As análises em cada uma das obras oferecem alternativas para se compreender o atual estágio histórico em que se encontra a sociedade burguesaThis dissertation aims to understand capitalism stabilization throughout different periods in twentieth century, namely through the reading of three works of the so called Western Marxism, which represent turning points in the discussion of the subject: History and Class Consciousness, written by Georg Lukács, Dialectic of Enlightenment, by Max Horkheimer and Theodor Adorno, and One-dimensional Man, written by Herbert Marcuse. In comparing these books with debates on transformations of capitalism in the periods in which each of them was written, this thesis seeks to understand through which mechanisms and institutions capitalist society was able to overcome its crises and become second nature to individuals, being accepted as the only possible form of society. In this sense, the authors discussed in my work distinguish themselves, not only because they recover and criticize important aspects about the stabilization of capitalism, but also because they present innovative elucidations and concepts regarding historical changes in the twentieth century. Lastly, each of the analysis presented in my work offers alternatives to comprehend the current historical stage in which bourgeois society finds itself
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Martini, Gisela de Assis. "Avaliação da citotoxicidade do Dietiltoluamida (DEET) em mexilhões Perna perna (Linnaeus, 1758) irradiados e não irradiados com radiação gama de 60Co." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-20012014-134632/.
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Estudos recentes têm identificado a presença de diversos poluentes emergentes em ambientes aquáticos. A ocorrência em diferentes matrizes ambientais tem sido continuamente relatada, o que evidencia a necessidade de estudos de toxicidade. O DEET (N,N-dietil-meta-toluamida) é o princípio ativo mais utilizado em repelentes de insetos e está presente em diversas formulações comercialmente disponíveis. Além dos poluentes químicos, os organismos aquáticos estão sujeitos à exposição da radiação ionizante proveniente de fontes naturais ou em proximidades de instalações de usinas nucleares. O presente estudo avaliou a toxicidade do DEET em organismos irradiados e não irradiados com radiação gama de 60Co, e os efeitos que a radiação causa sob os lisossomos de hemócitos do mexilhão Perna perna. Para isso, foram realizados ensaios de toxicidade aguda para identificar a concentração de DEET e a dose de radiação gama passíveis de causar mortalidade, e posteriormente ensaios de citotoxicidade avaliando a estabilidade da membrana lisossômica em organismos expostos ao DEET e radiação ionizante. De acordo com os resultados obtidos nos ensaios de toxicidade aguda, a concentração de DEET que causa mortalidade em 50% dos organismos expostos (CL50) é de 114,27 mg L-1, e a dose de radiação que causa mortalidade (DL50) é de 1068 Gy. Nos os ensaios de citotoxicidade obteve-se a concentração de efeito não observado (CENO) para organismos irradiados e não irradiados de 0,0001 mg L-1 e a concentração de efeito observado (CEO) em concentrações acima desta. A CI25(72h) para organismos não irradiados foi de 0,0003 mg L-1 e a CI50(72h) foi de 0,0008 mg L-1 para organismos irradiados e não irradiados. Apesar das concentrações de efeito encontradas no presente estudo terem sido mais altas que as ambientais, estão na mesma ordem de grandeza e também deve-se levar em consideração os possíveis efeitos sinérgicos do DEET com outros contaminantes presentes em ambiente aquático.Recent studies have identified the presence of several emerging pollutants in aquatic environments. The occurrence in different environmental matrices has been continuously reported, highlighting the need for toxicity studies. The DEET (N,N-diethyl-meta-toluamide) is the active ingredient used in most insect repellents, and is present in many commercially available formulations. Apart from chemical pollutants, aquatic organisms are subject to exposure of ionizing radiation from natural sources or in the vicinity of nuclear power plants. The present study evaluated the toxicity of DEET in organisms irradiated and non-irradiated with 60Co gamma radiation, and the effects that radiation causes in lysosomes of hemocytes of Perna perna mussel. For this purpose, assays were performed to identify the acute toxicity of DEET concentration and the dose of gamma radiation able to cause mortality. Subsequently, cytotoxicity assays were carried out to assess the stability of the lysosomal membrane in organisms exposed to ionizing radiation and DEET. According to the results obtained in acute toxicity tests, the concentration of DEET that causes mortality of 50% exposed organisms (LC50) is 114,27 mg L-1, and the radiation dose that causes mortality (LD50) is 1068 Gy. In the cytotoxicity assays, the concentration of the non-observed effect (NOEC) for irradiated and non-irradiated organisms 0.0001 mg L-1 and observed effect concentration (LOEC) at concentrations above this. The IC25 (72h) for non-irradiated organisms was 0.0003 mg L-1 and IC50 (72h) was 0.0008 mg L-1 for irradiated and non-irradiated organisms. Despite of the concentrations of effect found in this study were higher than in the environment, both measurements are in the same order of magnitude and should be also take into account the possible synergistic effects of DEET with other contaminants in the aquatic environment.
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Kavanová, Monika. "Leaf growth regulation in Lolium perenne under nutrient stress." [S.l.] : [s.n.], 2006. http://mediatum2.ub.tum.de/doc/613553/document.pdf.
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Chong, Siew Huat. "Transformation and toughness of iron-9 percent nickel alloy." Thesis, Sheffield Hallam University, 1998. http://shura.shu.ac.uk/19463/.
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Phase transformation studies have been carried out on VS2241A, Fe-9.14Ni -0.002C alloy. This alloy was chosen because it was expected that the speed of austenite decomposition would be slow enough to allow continuous cooling transformation and isothermal transformation experiments to be carried out on the same alloy. Upon furnace cooling, massive ferrite was the predominate phase formed. TEM inspection observed low angle sub-boundaries inside ferrite grains. Pre-polished surface examination showed the presence of Widmanstatten ferrite as evident by tent-shaped surface relief. Martensite-austenite (M-A) constituent was also observed under TEM inspection indicating that partition of carbon had occurred during transformation. Quantitative analysis of the dilatation curve showed continuous cooling consisted of two portions. One between 575 +/- 5°C and 558 +/- 3°C corresponding to the formation of grain boundary nucleated massive ferrite while the portion between 558°C to 500°C was thought to correspond to Widmastatten ferrite formation. The observation of an experimental T[0] temperature of 623 +/- 5°C and a theorectical T[0] temperature of 614 +/- 5°C implied that transformation took place below T[0] in the two phase field. Microanalysis using a FEG-STEM system with a windowless LINK X-ray detector was carried out at Liverpool University. This showed that the Ni content across a ferrite grain was constant at 8.8 +/- 0.2wt%Ni and 12.98 +/- 0.43wt%Ni was detected on a grain boundary confirming that the massive transformation was composition invariant, but local partitioning occurred in the interface during transformation. Thermal arrest experiments observed bainitic ferrite and lath martensite transformed at temperatures ~ 486°C and ~ 384°C respectively. Incomplete transformation was observed for all the isothermally transformed structures in the Fe-9Ni alloy below T[0]. It was suggested that this phenomenon would apply to all transformations occurring in the two phase field below the T[0] temperature. Separate but overlapping C-curves in a TTT diagram for Fe-9Ni were proposed to account for the coexistence of massive ferrite and Widmanstatten ferrite at the same temperature. The lath formation of Widmastatten ferrite was interpreted as a product of partial coherent interfaces propagated by means of a ledge mechanism, thermally activated by the trans-interphase diffusion of solute atoms. A thermal arrest at 707 +/- 5°C was observed on air cooling an Fe- 3.5Ni alloy,VS2239A. This corresponded to equi-axed ferrite transformation in the single phase region. In an iced brine quenched Fe-4Cu alloy, massive ferrite and Widmastatten ferrite were observed. A 6° misorientation was calculated between two adjacent ferrite grains seperated by a ragged grain boundary. Charpy impact testing of Fe-9Ni alloy, VS2241A gave a DBTT of -140°C and -100°C for massive ferrite and bainitic ferrite respectively. Massive ferrite showed a higher upper shelf energy on the transition curve.
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Zechar, Deborah Lee. "Tests for measurement of percent body fat in paraplegics /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487598303839067.
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Cuba, Cárdenas Roddy Osnar. "Análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 de sección en la Mina Azulcocha Mining S.A. Concepción – Junín 2017." Bachelor's thesis, Universidad Continental, 2017. http://repositorio.continental.edu.pe/handle/continental/3827.
Full textAbstract:
La presente tesis responde al problema ¿cuál es el resultado del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A.?
Tiene como objetivo general determinar los resultados del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A. También como hipótesis: influyen los resultados del análisis comparativo entre los pernos cementados e hydrabolt en el sostenimiento para labores perteneciente de 3*3 m de sección en la mina Azulcocha de la compañía Azulcocha Mining S.A.Tesis
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Porri, Francesca. "Variability in and coupling of larval availability and settlement of the mussel Perna perna : a spatio-temporal approach /." Connect to this title online, 2003. http://eprints.ru.ac.za/77/.
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Porri, Francesca. "Variability in and coupling of larval availability and settlement of the mussel Perna perna : a spatio-temporal approach." Thesis, Rhodes University, 2004. http://hdl.handle.net/10962/d1005484.
Full textAbstract:
Population dynamics of many intertidal organisms are highly influenced by the abundance and distribution of planktonic larvae in the water column and their arrival on the shore. The brown mussel, Perna perna was used to investigate two of the primary processes that affect population size and dynamics, larval availability and settlement, on the south coast of South Africa. Perna perna is a dominant species on rocky shores of the southern and eastern coasts of South Africa. It creates three-dimensional beds that provide habitats for many other species and hence promotes biodiversity. Larval availability and settlement were examined at different spatial and temporal scales using a nested experimental design. To detect possible relationships between larval availability and settlement, the studies were simultaneous. Two sites, 4km apart, were chosen to investigate mussel settlement patterns. Within each site, three locations (300m from each other) were selected. At each location, five artificial settler collectors were placed at approximately 20cm intervals. Collectors were replaced at a range of time intervals, from daily to seasonal, for 16 months. Each intertidal location was paired with an offshore station, 500m from the shore, where larval availability was measured. At each offshore station, three vertical hauls were collected twice a month using a plankton net. Plankton sampling lasted for 14 months and was designed to examine variability on three temporal scales: seasonal, lunar and daily. The results showed no correlation between the distribution of larvae in the water and settlers on the shore. While larvae were abundant in the water at the start of sampling, they became very rare throughout the rest of the study at both sites and all locations. In contrast, distinct peaks of settler abundance were observed during the seasonal settlement study. In addition to the expected, strong temporal variation that emerged from both studies at all time scales, spatial patterns of variability were also observed. While no spatial effect was detected for the larvae in the water column, there was distinct spatial variation in settlement at the location level: some locations always showed higher settlement than others. These results suggest that, on scales of hundreds of meters to kilometers, larval availability and settlement are very unpredictable in time and that differential delivery of larvae occurs from nearshore waters to the shore. Although the effect of the state of the moon (new or full) was not significant in either study, more settlers seemed to arrive on the shore during new moon. Wind direction did not correlate significantly with settlement. However, the dropping of offshore winds and the prevalence of onshore winds, which are characteristic of summer, may be linked to the start of settlement. Nevertheless, further investigations on tidal or lunar cycles and on the influence of wind on surface currents are required to clarify the effects of moon and wind on settlement.
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Williams, Stacey L., Sheri L. Laduke, Kathleen A. Klik, and David W. Hutsell. "A Paradox of Support Seeking and Support Response Among Gays and Lesbians." Digital Commons @ East Tennessee State University, 2016. https://doi.org/10.1111/pere.12127.
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Individuals that perceive stigma surrounding their identity and fear rejection of support requests may experience a paradox whereby they seek support indirectly from support networks (friends and family) to avoid rejection and are met with unsupportive responses. This study extended this paradox to sexual minorities using survey data from a sample of 133 individuals self-identified as gay and lesbian. Results of structural equation modeling showed self-stigma and fear of support rejection linked to increased indirect support seeking, which in turn explained unsupportive network responses, providing support for a paradox among gays and lesbians. Findings may have implications for interventions to improve support exchanges in the lives of sexual minorities.
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Cortez, Fernando Sanzi. "Estudo ecotoxicológico de contaminantes de preocupação emergente na baía de Santos, SP /." São Vicente, 2018. http://hdl.handle.net/11449/157480.
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Orientador: Camilo Dias Seabra PereiraResumo: O amplo uso de fármacos na medicina humana e veterinária tem resultado em problemas ambientais, uma vez que a ocorrência dessas substâncias em ecossistemas aquáticos têm sido demonstrada em regiões que recebem efluentes domésticos e industriais. Embora a ocorrência dessas substâncias no ambiente marinho e estuarino tenha sido amplamente observada, há poucos estudos que abordem a avaliação dos efeitos nocivos em organismos não-alvos, principalmente de áreas tropicais. Dada a importância de conhecer as concentrações ambientais de fármacos em zonas costeiras e estimar os efeitos biológicos adversos em organismos marinhos, o presente estudo visou identificar e quantificar por cromatografia líquida acoplada a espectrometria de massas (LC/MS/MS) os fármacos losartan, fluoxetina, metformina, 17 -etinilestradiol, amoxicilina e o antimicrobiano triclosan em amostras de água coletadas na Baía de Santos (SP); avaliar as respostas metabólicas (fases I (etoxiresorufina-O- desetilase/ EROD; dibenzilfluoresceína/ DBF) e II (glutationa-S-transferase/ GST)) do processo de biotransformação; a atividade antioxidante (glutationa peroxidase/ GPx) e estimar os efeitos subletais (lipoperoxidação (LPO), dano em DNA, colinesterase (ChE) e estabilidade da membrana lisossomal (EML)) associados à exposição a essas substâncias (48 e 96 horas), nos tecidos brânquia, glândula digestiva e hemolinfa do molusco bivalve Perna perna. Com o antimicrobiano triclosan foi realizada uma avaliação de risco ambiental ... (Resumo completo, clicar acesso eletrônico abaixo)
Abstract: The widespread use of drugs in human and veterinary medicine has resulted in environmental problems, as the occurrence of these substances in aquatic ecosystems has been demonstrated in regions receiving domestic and industrial effluents. Although the occurrence of these substances in the marine and estuarine environment has been widely observed, there are few studies that approach the evaluation of harmful effects in non-target organisms, mainly in tropical areass. Given the importance of knowing the environmental concentrations of pharmaceuticals in coastal zones and the adverse biological effects on organisms of these regions, the present study aimed to identify and quantify by mass spectrometry (LC/MS/MS) the pharmaceuticals losartan, fluoxetine, metformin, 17α- ethynylestradiol, amoxicillin and the antimicrobial triclosan in marine water samples collected in Santos Bay, evaluate the metabolic responses (phases I (ethoxyresorufin-O-deethylase/EROD, dibenzylfluorescein/DBF) and II (glutathione S-transferase/GST), antioxidant activity (glutathione peroxidase/GPx) and estimate sub-lethal effects (lipoperoxidation (LPO), DNA damage, cholinesterase (ChE) and lysosomal membrane stability (VN)) associated with the exposure to these substances (48 and 96 hours), in the gill tissues (BR), digestive gland (GD) and hemolymph of the marine bivalve Perna perna. With the antimicrobial triclosan, an environmental risk assessment was performed using marine invertebrate toxicity data. All... (Complete abstract click electronic access below)
Doutor
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Oliveira, Júnior Raimundo Fernandes de. "Modelagem espacial dos atributos do solo sob diferentes ocupações em uma microbacia perene de vertente do semiárido." Universidade Federal Rural do Semi-Árido, 2016. http://bdtd.ufersa.edu.br:80/tede/handle/tede/580.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Knowledge of the use and occupation of land and water management is extremely necessary for an integrated and sustainable management of its resources, particularly water and soil. Allied to this, the spatial distribution of soil properties play a fundamental role in the design and understanding of human impacts on watersheds. Then, describe and map the land use and occupation with the spatial variability of its attributes is very important to put into practice techniques of rational and appropriate management of exploitation of these resources. Geostatistics has contributed increasingly to space research soil attributes. Therefore, the objective of this work dissertation was to map the use and occupation of land along with their attributes, using GIS and geostatistics, a perennial watershed shed in semi-arid conditions. The watershed of pecks Creek belongs to the middle reaches of the river basin of Apodi-Mossoró River, located in the west of Rio Grande do Norte state. inderformadas and misshapen collected soil to carry out the laboratory of physical water and soil chemical attributes analyzes were performed. The study showed that the use of geostatistics was suitable for the measurement of the spatial dependence of soil properties in a watershed, with the theoretical models, exponential and spherical, who played better results. Among the attributes of the soil studied the chemicals suffered greater interference of human impacts in the area. With this work it was possible to conclude that the map of land use and occupation, along with maps of spatial variability of soil attributes, proved to be a powerful assessment tool of environmental impacts on watersheds and contribute to the planning rational use and land use in watersheds sustainably
O conhecimento do uso e ocupação do solo em bacias hidrográficas é extremamente necessário para um gerenciamento integrado e sustentável de seus recursos, em especial água e solo. Aliado a isso, a espacialização dos atributos do solo tem papel fundamental no dimensionamento e entendimento dos impactos antrópicos em bacias hidrográficas. Logo, descrever e mapear o uso e ocupação do solo juntamente com a variabilidade espacial de seus atributos é de suma importância para se colocar em prática técnicas de manejo racional e adequada de exploração desses recursos. A geoestatística tem contribuído cada vez mais para pesquisa espacial de atributos do solo. Portanto, o objetivo deste trabalho de dissertação foi mapear o uso e ocupação do solo juntamente com seus atributos, utilizando SIG e geoestatística, numa microbacia hidrográfica perene de vertente, em condições semiáridas. A microbacia hidrográfica do Riacho da bica pertence ao médio curso da bacia hidrográfica do rio Apodi-Mossoró, localizada no Oeste do estado do Rio Grande do Norte. Foram realizadas coletas inderformadas e deformadas do solo para realização das analises laboratoriais dos atributos físico-hídricos e químicos do solo. O estudo mostrou que o uso da geoestatística foi adequado para a mensuração da dependência espacial dos atributos do solo numa microbacia hidrográfica, sendo os modelos teóricos, exponencial e esférico, os que desempenharam melhores resultados. Dentre os atributos do solo estudados, os químicos sofreram maior interferência dos impactos antrópicos na área. Com esse trabalho foi possível concluir que, o mapa de uso e ocupação do solo, juntamente com os mapas de variabilidade espacial dos atributos do solo, mostrou-se uma poderosa ferramenta de avaliação de impactos ambientais em microbacias hidrográficas, além de contribuírem para o planejamento racional do uso e ocupação do solo em bacias hidrográficas de forma sustentável
2016-10-20
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Dongo, Carrión Iván Alexander. "El Taxón Kaniri y las nomenclaturas étnicas de las variedades de yuca de los Ashaninka del Perené." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2013. https://hdl.handle.net/20.500.12672/12461.
Full textAbstract:
Publicación a texto completo no autorizada por el autorEvalúa y pretende dar a conocer la organización radial del taxón Kaniri, observando el comportamiento lingüístico de los organismos que se acercan más al núcleo y los organismos que se sitúan en la periferia. Los ashaninka del Perené, como cualquier otro grupo humano, han sistematizado una gran cantidad de conocimientos a partir de la percepción de la gran biodiversidad existente en los territorios que ocupan, biodiversidad con la que han interactuado desde tiempos antiquísimos. Es así como ellos son depositarios de una compleja biosistemática de la flora y la fauna que lleva acuñada el sello propio de los ashaninka.
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