Thèses sur le sujet « Activité de vol »
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Sfihi-Loualia, Ghenima. « Caractérisation de l’activité enzymatique des beta-1,2 mannosyltransférases CaBmt1 et CaBmt3, enzymes d'initiation et d’élongation de la beta-mannosylation du phosphopeptidomannane de Candida albicans ». Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10022/document.
Texte intégralCandida albicans is a commensal yeast present in human digestive flora; nevertheless, this opportunistic pathogen may cause severe infections. Several cell wall components including phosphopeptidomannan (PPM) are involved in C. albicans-host cells interaction especially by terminal beta-1,2 oligomannosides (β-Mans) known as implicated in the yeast virulence mechanisms. The aim of our work is to better understand biosynthetic pathways of β-Mans by the characterization of CaBmts individual activities. In this context, the first enzyme to be studied was CaBmt1, involved in the initiation of β-mannosylation of PPM. The strategy is based firstly on the preparation of a large panel of potential acceptor substrates and their structural characterization by mass spectrometry and NMR. On the other hand, the study of enzymatic activity of Bmt1p, a recombinant soluble form produced in Pichia pastoris, was performed in the presence of the natural substrates and synthetic substrates. We established that Bmt1p can sequentially transfer in vitro two -1,2-mannosyl units onto a α1-2 linked tri-or tetramannoside. The second part of this work focused on the characterization of the activity of CaBmt3, the enzyme involved in the elongation of the β-Mans chain on the PPM; the same approach was used for the study. Our results demonstrated that Bmt3p can catalyse the in vitro transfer of one -1,2-mannosyl unit onto a tetramannoside containing a terminal β-1,2-Man linked to a α(1-2)Man chain. These data are a prerequisite for the design of new potential antifungal drugs that target the biosynthesis of cell wall
Minaud, Étienne. « Écologie hivernale des abeilles mellifères : contribution des traits d'histoire de vie des individus et des colonies au succès d'hivernation ». Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASB024.
Texte intégralIn temperate regions, low temperatures and a lack of floral resources make winter a critical period for the survival of honey bees, Apis mellifera, which overwinter based on a set of adaptations at both individual and colony levels. But over the past 30 years, high winter mortality rates have been reported worldwide, raising questions about the sustainability of the beekeeping sector and that of many agricultural systems dependent on pollination services. These mortalities are induced by multiple biotic and abiotic stress factors acting in combination. However, we showed through a literature review that their roles in the mechanisms of colony collapse remain poorly documented, highlighting a lack of knowledge about the winter ecology of honey bees. This gap is partly due to the technical challenge associated with monitoring honey bees in winter, given that traditional monitoring techniques imply opening the hives, which disrupts the social thermoregulation of the colony. However, the democratization of "Information and Communications Technology" (ICT) now offers new automated and minimally invasive monitoring tools. In this context, the aim of this thesis is to better understand the mechanisms determining the success or failure of honey bee overwintering, through the automated monitoring of individual and colony life history traits. In addition, we aimed to develop indicators to predict colony collapse in winter and under real field conditions. We first developed a tool for measuring temperature at several points in the hive and allowing to monitor the cluster that honey bees form to protect themselves from the cold, and thus to study the social thermoregulation of colonies during winter. This tool was then deployed in the field to monitor honey bee colonies located along a European climatic gradient, covering Mediterranean, oceanic and continental climates. This monitoring provided the establishment of health indicators of wintering colonies. Based on temperature heterogeneity within the colony, these indicators distinguish the periods of winter survival and the periods of collapse, allowing the anticipation of mortalities. They also allow monitoring of the dynamics of winter brood production by measuring its presence and size, two metrics that we found positively correlated to the European climatic gradient. In winter, colony survival depends on the presence of winter bees, corresponding to the last generations of bees to emerge in autumn. By the individual monitoring by Radio Frequency IDentification (RFID) tracking, we showed that, in addition to their extended longevity, winter bees have more flight activity than summer bees. Their flight activity can be allocated either before or after winter, and our results suggest that these pre-winter flight activities do not affect the longevity or the flight activity performance of bees after winter. Also, we showed that only a small proportion of winter bees survive and participate in the colony flight activity in spring, suggesting a crucial role of these winter bees for the colony rebound after winter. Placed in context, our results support the crucial role of winter bees and social thermoregulation in the success or failure of honey bee colony overwintering. The electronic tools we have developed, and the associated indicators, may represent relevant applied perspectives for limiting winter colony mortality in the field. We also discuss the acceptability of precision beekeeping and show that beekeepers are ready to adopt these electronic tools, although further expectations remain. Finally, we highlight the uncertainty surrounding the future of overwintering, in the face of climate change
Duncianu, Marius. « Réacteur à écoulement pour l’étude de la formation des aérosols organiques secondaires par ozonolyse de composés organiques volatils : développement analytique, validation cinétique et ozonolyse d’un composé biogénique ». Electronic Thesis or Diss., Lille 1, 2012. http://www.theses.fr/2012LIL10039.
Texte intégralA steady flow reactor equipped with a mobile injection head was developed at the Chemistry and Environment Department, Ecole des Mines de Douai, to better understand the formation processes of secondary organic aerosols (SOA) following the gas phase oxidation of certain species particularly reactive and/or abundant in the atmosphere. In contrast to atmospheric simulation chambers the flow reactor allows to observe in stationary conditions the product formation in the early stages of the reaction at ambient pressure and temperature.The foremost part of this work was to characterize the reactor flow, and to develop and optimize the methods used for the gas phase analysis. In a second stage a kinetic study of the ozonolysis of methylated pentenes and α-pinene was performed to validate the system. The rate coefficients were determined in pseudo first order conditions with excess alkene and showed a good agreement with literature values. The expected oxidation pathways were identified and quantified for one alkene (in good agreement with the only study available), and a nonoxidized intermediate coming from the rearrangement of a Criegee biradical, has been found for short reaction times. Finally, the SOA formation from α-pinene ozonolysis was investigated with simultaneous characterization of the gas phase concentrations of reactants and products (by ozone analyzer and TD/GC/FID-MS), of the particle size distribution (by SMPS and HR-ToF-AMS), and of the average chemical composition of particles (HR-ToF-AMS)
Duncianu, Marius. « Réacteur à écoulement pour l’étude de la formation des aérosols organiques secondaires par ozonolyse de composés organiques volatils : développement analytique, validation cinétique et ozonolyse d’un composé biogénique ». Thesis, Lille 1, 2012. http://www.theses.fr/2012LIL10039/document.
Texte intégralA steady flow reactor equipped with a mobile injection head was developed at the Chemistry and Environment Department, Ecole des Mines de Douai, to better understand the formation processes of secondary organic aerosols (SOA) following the gas phase oxidation of certain species particularly reactive and/or abundant in the atmosphere. In contrast to atmospheric simulation chambers the flow reactor allows to observe in stationary conditions the product formation in the early stages of the reaction at ambient pressure and temperature.The foremost part of this work was to characterize the reactor flow, and to develop and optimize the methods used for the gas phase analysis. In a second stage a kinetic study of the ozonolysis of methylated pentenes and α-pinene was performed to validate the system. The rate coefficients were determined in pseudo first order conditions with excess alkene and showed a good agreement with literature values. The expected oxidation pathways were identified and quantified for one alkene (in good agreement with the only study available), and a nonoxidized intermediate coming from the rearrangement of a Criegee biradical, has been found for short reaction times. Finally, the SOA formation from α-pinene ozonolysis was investigated with simultaneous characterization of the gas phase concentrations of reactants and products (by ozone analyzer and TD/GC/FID-MS), of the particle size distribution (by SMPS and HR-ToF-AMS), and of the average chemical composition of particles (HR-ToF-AMS)
Foster, Philip. « L'exercice musculaire et la décompression d'altitude : application aux activités extravéhiculaires spatiales ». Lyon 1, 2001. http://www.theses.fr/2001LYO1T002.
Texte intégralZushin, Peter-James H. « The selective effect of estrogen receptor alpha and beta on activity and social behavior in neonatal male praire voles ». Akron, OH : University of Akron, 2009. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=akron1248102221.
Texte intégral"August, 2009." Title from electronic thesis title page (viewed 10/7/2009) Advisor, Bruce Cushing; Committee members, Qin Liu, Todd Blackledge; Department Chair, Monte Turner; Dean of the College, Chand Midha; Dean of the Graduate School, George R. Newkome. Includes bibliographical references.
Brown, Joshua T. « The Energy Expenditure of Heavy Metal Drummers ». TopSCHOLAR®, 2016. http://digitalcommons.wku.edu/theses/1647.
Texte intégralGon?alves, Jacqueline Miranda. « Atividades biol?gicas e composi??o qu?mica dos ?leos essenciais de Achyrocline satureoides (Lam) DC. e Ageratum conyzoides L. encontradas no semi?rido baiano ». Universidade Estadual de Feira de Santana, 2015. http://localhost:8080/tede/handle/tede/283.
Texte intégralMade available in DSpace on 2016-01-19T23:08:21Z (GMT). No. of bitstreams: 1 TESE DOUTORADO VERS?O FINAL.pdf: 3041272 bytes, checksum: e0025693076836f6a3804cc2aaf6a529 (MD5) Previous issue date: 2015-09-28
Essential oils are complex mixtures of various isolates of plant secondary metabolites. Due to the increased use of these aromatic compounds, research has been developed, and the development of new products. This study analyzed the antimicrobial, cytotoxic and immunomodulatory activities in addition to the phytochemical profile of essential oils Achyrocline satureoides and Ageratum conyzoides. The micro-organisms most sensitive to oils were Staphylococcus aureus CCMB 262 and Candida kruzei CCMB 287. The essential oil of A. conyzoides was considered non-toxic in the tested conditions. In the assessment of the immune response induced by oils, although they were not statistically significant differences between the concentrations tested and control, it was observed that the essential oils inhibited the production of IL-8 and IL-12 cytokines with exception of the species A. satureoides at a concentration of 100 mg / mL. This behavior may suggest the capacity reduction of the inflammatory response. The chromatographic analysis of essential oils of A. satureoides demonstrated a chemical profile consistent with the literature where the major components were ?-Pinene, E-caryophyllene, ?-copaene, ?-humulene, d-cadinene. Since the analysis of oils A. conyzoides showed conflicting results in the literature which suggests a new chemotype, since the presence of precocenos the chemical analysis was not observed.
Os ?leos essenciais s?o misturas complexas de metab?litos secund?rios isolados de diversas plantas. Devido ao aumento do uso destes compostos arom?ticos, pesquisas v?m sendo desenvolvidas, al?m do desenvolvimento de novos produtos. O presente trabalho analisou as atividades antimicrobiana, citot?xica e imunomoduladora, al?m do perfil fitoqu?mico de ?leos essenciais de Achyrocline satureoides e Ageratum conyzoides. Os micro-organismos mais sens?veis aos ?leos foram Staphylococcus aureus CCMB 262 e Candida kruzei CCMB 287. O ?leo essencial de A. conyzoides foi considerado at?xico nas condi??es testadas. Em rela??o ? avalia??o da resposta imune induzida pelos ?leos, apesar de n?o terem sido encontradas diferen?as estatisticamente significantes entre as concentra??es testadas e o controle, p?de-se observar que os ?leos essenciais inibiram a produ??o das citocinas IL-8 e IL-12, com exce??o da esp?cie A. satureoides na concentra??o de 100 ?g/mL. Este comportamento pode sugerir a capacidade de redu??o da resposta inflamat?ria. As an?lises cromatogr?ficas dos ?leos essenciais de A. satureoides demonstrou um perfil qu?mico em concord?ncia com a literatura onde os componentes majorit?rios foram ?-Pineno, E-Cariofileno, ?-Copaeno, ?-Humuleno, d-Cadineno. J? as an?lises dos ?leos de A. conyzoides apresentou resultados divergentes da literatura o que nos sugere um novo quimiotipo, uma vez que n?o foi observada a presen?a de precocenos nas an?lises qu?micas.
Luong, Huu Thanh, Thuy Nga Vu, Thi Thuy Ha, Kieu Bang Tam Nguyen et Thi Hong Van Dao. « Effects of some microelements on antifungal activity and biomass of the Actinomyces producing Validamycin-A ». Technische Universität Dresden, 2018. https://tud.qucosa.de/id/qucosa%3A33068.
Texte intégralValidamycin A (val-A) là một loại kháng sinh có khả năng kháng nấm, được tổng hợp bởi xạ khuẩn Streptomyces hygroscopicus và phụ thuộc vào quá trình sinh trưởng, phát triển của xạ khuẩn. Bài báo này đánh giá ảnh hưởng của nguyên tố vi lượng Mn, Zn đến hoạt tính kháng nấm Rhizoctonia solani (R. solani) và sinh khối của chủng Streptomyces hygroscopicus DA15. Khi bổ sung Mn vào môi trường nuôi cấy với nồng độ 1μg/l, sinh khối của Streptomyces hygroscopicus- DA15 đạt 2,85±0,02g/ml, đường kính vòng kháng nấm đạt 3,5±0,2cm. Bổ sung Zn vào môi trường nuôi cấy với hàm lượng Zn=3μg/l, sinh khối của Streptomyces hygroscopicus DA15 đạt 4,5±0,02g/ml và đường kính vòng kháng nấm đạt 3,4±0,2cm.
Eliason, Gabriella. « Sceletal muscle characteristics and physical activity patterns in COPD ». Doctoral thesis, Örebro universitet, Hälsoakademin, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-12341.
Texte intégralGibert, Jean-François. « La temps volé à l'enfance et à l'institution scolaire : éloge du mouvement ». Paris 8, 1992. http://www.theses.fr/1992PA080654.
Texte intégralThe school institution is dependent on the evolution of life conditions, traffic and exchange, which are characterized by the explosion of time and space. The consequence is that the negative effects of the programming voluntarism which is upsetting time, turning the body into an instrument and intertering with the production of self-sufficient behaviour, are reinforced. The social and institutional treatment of this disease of time, illustrated by the "life rhythm phenomenon", presents a deceptive aspect. Essentialy, it establishes moments that are perfectly dissociated. On the other hand, the study of bodily manifestation reveals infradian, circadian and ultradian rhythmicities. They also emphasize how much movement is a supplier of tricks and a voice of rebellion. Movement has a bad press; it is banned and assigned to a space. In this respect, "to venture and take account of movement in one's daily pedagogical action" may have a sedative effect on the crippling tendencies which govern school practices
Zushin, Peter-James H. « The Selective Effect of Estrogen Receptor Alpha and Beta on Activity and Social Behavior in Neonatal Male Prairie Voles ». University of Akron / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=akron1248102221.
Texte intégralBöhringer, Martin. « Adaption von Web 2.0-Mustern in Organisationen ». Doctoral thesis, Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-83776.
Texte intégralBilgic, Akif. « Zusammenspiel von Corporate Performance Management, business intelligence und business activity monitoring ». Hamburg Diplomica-Verl, 2007. http://d-nb.info/987561170/04.
Texte intégralBilgic, Akif. « Zusammenspiel von Corporate Performance Management, Business Intelligence und Business Activity Monitoring / ». Hamburg : Diplomica Verl, 2008. http://d-nb.info/987561170/04.
Texte intégralGuéron, David. « Modélisation d'activités et agrégation de profils de vol ». Thesis, Aix-Marseille 3, 2011. http://www.theses.fr/2011AIX30044.
Texte intégralAggregating activities in order to identify categories of behaviour is a major topic of actual complex socio-technical systems. The key issue lies in incorporating the variability of implied human operators in the synthesis of ways of doing (or praxis). Aggregation of piloting activities is directed to allow a faster and more secure determination of procedures enhancing flight security and mission efficiency; it is based on the objective data of flight parameters recorded during significant flight phases, and is carried under thorough expert interpretation.A Supervised Aggregation model, consisting in the 3 steps of 1) decomposition, 2) maieutics, and 3) reconstruction, is thus devised in the present PhD. At the heart of this aggregation process, the 2nd maieutic step generalizes and enriches the usual concept of ''mean'', deeply related to probabilistic approaches: a set of activities analyzed and characterized by the expert, the learning basis, is related to significant patterns in the lot of recorded flight parameter values, in other words the praxis resulting of the aggregation of the activities. The patterns are selected from a collection of customizable generic patterns, whose thresholds are incrementally adjusted using the learning basis. The obtained patterns are then assessed according to the three criteria of 1) coherence and 2) likelihood of the thresholds, as well as the 3) conformity of these patterns used on the learning basis. At this stage, groups among the studied behaviours might emerge, gathering those for which an activity would be depicted by similar patterns. Expert-knowledge must be generalized in order to perform the joint analysis of several key points in this maieutic step.This generic model defines an activity as a formal structure of praxis, paving the way towards the further developments of the process, through the enrichment of the 3rd step, incorporating the multiplicity of operating roles
Smirnov, Sergey, Farahani Armin Zamani et Mathias Weske. « State propagation in abstracted business processes ». Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5148/.
Texte intégralGeschäftsprozessmodelle sind Abstraktionen konkreter operationaler Vorgänge, die im täglichen Geschäftsablauf von Organisationen auftreten. Um die Komplexität solcher Modelle zu bewältigen, wurde die Geschäftsprozessmodelabstraktion eingeführt. Ziel ist dabei, von einem detaillierten Prozessmodel mehrere abstrakte Modelle abzuleiten, um so auf einer höheren Abstraktionsstufe ein Verständnis für den Prozess zu bekommen. Während viel in der Literatur über Techniken zur Konstruktion abstrakter Modelle berichtet wurde, ist wenig über die Beziehungen zwischen Prozessinstanzen und abstrakten Modellen bekannt. In dieser Arbeit zeigen wir, wie der Zustand einer abstrakten Aktivität aus den Zuständen ihrer entsprechenden detaillierten Prozessaktivitäten zur Laufzeit berechnet werden kann. Der Ansatz basiert dabei auf der Übertragung des Aktivitätszustands. Mit der Zustandseindeutigkeit und der Korrektheit der Zustandstransitionen führen wir formale Kriterien ein, die das Verständnis der Zustandsübertragung erleichtern. Zudem sind Algorithmen entwickelt worden, um diese Kriterien zu überprüfen. Außerdem nutzen wir Verhaltensprofile um Inkonsistenzen im Verhalten abstrakter Prozessmodelle zu identifizieren und zu klassifizieren, die auftreten können, wenn die Aktivitätszustände gemäß den Regeln abgebildet werden.
Winklmeier, Andreas. « Rolle der Transkription und Aktivität von MIA ("Melanoma Inhibitory Activity") im malignen Melanom ». kostenfrei, 2009. http://www.opus-bayern.de/uni-regensburg/volltexte/2009/1301/.
Texte intégralCrona, Anna-Karin, et Elin Lagerstedt. « Faktoter som påverkar valet av fritidsaktiviteter efter stroke : En intervjustudie med sju personer som drabbats av stroke ». Thesis, Örebro University, Department of Health Sciences, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-684.
Texte intégralSyftet med studien var att undersöka vad som påverkar valet av fritidsaktiviteter hos personer som haft stroke och på vilket sätt fritidsaktiviteterna har förändrats. För att uppnå syftet valdes kvalitativa intervjuer som metod. Intervjuerna var semistrukturerade och utgick från en egengjord intervjuguide. Resultatet visade att utmaningen, gemenskapen, fysisk träning, självständighet, balans i vardagen, livssynen och rehabiliteringsteamet var faktorer som påverkade deltagarnas utförande av fritidsaktiviteter. Att anpassa fritidsaktiviteten eller att få personligt stöd var vanligare än att anpassa den fysiska miljön.
Mesquita, Filho Walter [UNESP]. « Determinação de horário de vôo e fatores que o influenciam, em scarabaeidae coprófagos diurnos e noturnos em Selvíria/MS ». Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/98819.
Texte intégralA atividade de vôo em besouros coprófagos é de extrema importância pois é neste momento em que estes encontram seu alimento, a massa fecal, através de odores liberados por estas. O horário de vôo é importante devido à grande competição que ocorre entre as espécies. Tanto fatores abióticos quanto bióticos influenciam essa atividade. O objetivo deste trabalho foi determinar o horário de vôo de e a influência de ambos os fatores na regulação deste, em área de fragmento de Mata Atlântica e pastagem de Brachiaria decumbens, na Fazenda da UNESP, em Selvíria/MS. Utilizou-se de armadilhas pitfall em ambas as áreas, iscadas com massa fecal bovina, colocadas às 7:00 h e às 18:00 h, e luminosa, localizada na área de pastagem. A coleta dos besouros coprófagos foi feita a cada 20 min, durante 24 horas, uma vez por semana, e dos dados climáticos a cada 10 min. De outubro de 2006 a março de 2007 foram coletados 14205 indivíduos, sendo 11737 em luminosa, 1635 em pitfall no pasto e 835 em pitfall na mata e identificando-se 61 espécies de besouros coprófagos. Em relação aos tipos de armadilhas utilizadas, luminosa foi mais eficiente na captura de espécies endocoprídeas que a armadilha pitfall. Em condições de alta densidade populacional a armadilha luminosa expressou de forma similar às armadilhas pitfall os padrões de vôo das espécies paracoprídeas noturnas, porém quando em baixa densidade, em função do maior número de repetições, as armadilhas pitfall foram melhores. Quanto ao período de vôo, a maioria das espécies coletadas foi de hábito noturno, este talvez determinado pelas altas temperaturas do ar reinantes durante o período diurno, das quais estas procuram escapar, em especial aquelas paracoprídeas. A intensidade luminosa foi a variável meteorológica responsável pelo início do vôo tanto em espécies noturnas endocoprídeas...
Flight activity in dung beetles is of extreme importance, for this is the time when they find their food, the dung pad, by volatiles released by them. The time of flight is important due to a high degree of competition that occurs among dung beetle species. Both abiotic and biotic factors influence this activity. The objective of this research was to determine the time of flight of dung beetles and the influence of both abiotic/biotic factors on its regulation, in a fragment of Atlantic forest and Brachiaria decumbens pasture, at the UNESP Farm, located in Selvíria, state of Mato Grosso do Sul, Brazil. Pitfall traps were used in both areas, baited with fresh bovine dung pads, at 7:00 AM and replaced by fresh ones again at 6:00 PM, and also a black light flight intercept trap in the pasture area. Trapped beetles were collected every 20 min for 24 hours straight, once a week, while climatic data were gathered every 10 min, from October 2006 until March 2007. A total of 14,205 specimens were trapped, 11,737 in the flight trap, while in pitfall traps 1,635 and 835 beetles were trapped in the pasture and fragment areas, respectively, corresponding to 61 different species. The flight trap was more efficient in trapping endocoprid species. When in high population, the flight pattern of nocturnal paracoprid beetles was equally well expressed by both trap types, while in low densities pitfall traps performed better, probably due to a larger number of replications. Most trapped species proved to be nocturnal, perhaps due to the high daily air temperatures, from which they could be avoiding, especially so for the paracoprid species. The light intensity was the meteorological factor responsible for flight initiation, in both endocoprid and paracoprid species. The flight in nocturnal endocoprid species was of short duration (ca. 80 min), probably because of their greater inability of regulating their... (Complete abstract click electronic access below)
Sihaib, Zakaria. « Oxidation of toluene traces in gas phase in presence of manganese-oxide based catalysts : relationship structure-activity ». Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1029.
Texte intégralIn the first part of my work, I have prepared four different catalysts based on manganese oxides: a perovskite (LaMnO3), via sol-gel method; a simple oxide (Mn2O3), by rapid method and an Octahedral Molecular Sieve (OMS-2) by two different preparation methods, via solid state (OMSs) and hydrothermal method (OMSh). The physicochemical properties of these catalysts were characterized by X-ray diffraction (XRD), N2 adsorption–desorption, TGA/DTA, ICP-OES and H2-TPR. Their catalytic performances were evaluated in the oxidation of toluene. Three consecutive catalytic cycles were performed for each catalyst in order to reach steady state performances. In order to assess the stability of the catalysts under reaction conditions, the catalytic performances were studied upon long-term experiments running for 24 h at 25% of toluene conversion. Tests of toluene oxidation over a typical industrial catalyst, such as a commercial Pd/Al2O3 catalyst containing 0.78 wt% Pd, were also performed for comparison purposes. The crystalline features detected in the XRD patterns are well consistent with the formation of the desired structures. Based on their specific surface area and their low-temperature reducibility, the catalysts were ranked as follows: OMSs> Mn2O3> OMSh> LaMnO3. This trend was in good agreement with the performances observed in the catalytic removal of toluene. A kinetic model was proposed and a good agreement was obtained upon fitting with the experimental data. In the second part of my work, LaMnO3 (LM) catalysts with molar ratio of citric acid (CA) to metal nitrates (Mn and La) ranging from 0.5 to 2 (LM 0.5 to LM 2) were synthesized by citrate sol–gel method, in order to study effect of citric acid ratio on the physico-chemical properties and the catalytic performances. The physicochemical properties of these catalysts were characterized by X-ray diffraction (XRD), N2 adsorption–desorption and by inductively coupled plasma atomic emission spectroscopy (ICP-AES). Over selected samples, additional characterizations by thermogravimetric and differential thermal analysis (TGA/DTA), temperature-programmed reduction by hydrogen (H2-TPR) and X-ray photoelectron spectroscopy (XPS) were carried out. The results show that the molar ratio of citric acid to metal nitrates significantly influenced the TGA/DTA profile of gels along with the physico-chemical properties of the catalysts. The crystalline features detected by XRD are well consistent with the formation of LaMnO3 perovskite phase. Small features of Mn2O3 were detected in the diffraction patterns of all LM catalysts except for high CA/Mn+La nitrates molar ratio (1.9 and 2.0). Conversely, La2O3 peaks appeared for values ranging from 1.6 to 2, the highest intensity being detected at molar ratio equal to 2. The catalytic performances were evaluated in the oxidation of toluene, performing three consecutive catalytic cycles in order to reach steady-state performances. In order to assess the stability of the catalysts under reaction conditions, long-term experiments running for 24 h at 17 % of toluene conversion were carried out. The catalysts LM1.2, LM1.3 and LM1.5 showed the best catalytic performances in terms of toluene conversion, LM0.8 was poor performing, while LM1 and LM1.7 exhibited an intermediate behaviour
Tatzel, Jutta. « Bedeutung von MIA (Melanoma inhibitory activity) bei der Entstehung und Progression des malignen Melanoms ». [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975164775.
Texte intégralMolnar, Matthias [Verfasser], et Rainer [Akademischer Betreuer] Deutzmann. « Molekulare Funktion und Transport von MIA (Melanoma Inhibitory Activity) / Matthias Molnar ; Betreuer : Rainer Deutzmann ». Regensburg : Universitätsbibliothek Regensburg, 2016. http://d-nb.info/112995644X/34.
Texte intégralTavares, Fábio Miguel Martins. « Custo da hora de voo : aplicação do modelo ABC à Força Aérea Portuguesa ». Master's thesis, Instituto Superior de Economia e Gestão, 2012. http://hdl.handle.net/10400.5/10862.
Texte intégralApesar de existirem vários estudos que explicam o Activity-Based Costing, muito reduzido é o número daqueles que apresentam uma aplicação prática do mesmo, principalmente quando se trata de uma organização militar. A iniciativa de calcular o custo da hora de voo remonta a 1985, tendo desde então sofrido várias reformulações, estando ao momento a Diretiva 02/2004 em revisão para melhor refletir a realidade da organização. Por esse facto, como também pela necessidade de estabelecimento de um preço da hora de voo a praticar quando os serviços da FAP são requisitados e como instrumento de gestão para avaliar a eficiência de recursos humanos e materiais, houve a necessidade de estudar este tema, aplicando um método recente e inovador como o ABC, em que são definidas atividades como principais elementos de consumo dos recursos de uma organização. Desta forma, o presente trabalho tem por objetivo a aplicação do ABC na Força Aérea Portuguesa, passando pela implementação prática à Base Aérea nº6, unidade aérea que suporta um número significativo de diferentes aeronaves. Os resultados apontam para um melhor custeio dos produtos, principalmente por não apenas alocar os custos diretos, mas também distribuir os custos indiretos da BA 6, custos de apoio importantes na sustentação e manutenção de um alerta constante como é exigido à FAP.
Although there is a wide range of studies explaining Activity-Based Costing, only a few have a practical application, even more when there is a military organisation involved. The initiative of calculating the cost per flight hour has begun in 1985, however it has suffered some changes over the years, and at this moment the Directive 02/2004 is under revision to better reflect the reality of the organization. By that fact, but also the need for establishing a price per flight hour when the Air Force services are needed and as a management instrument to evaluate the efficiency of human resources and materials, there was a need to study this theme, applying a recent and innovative method as ABC, where activities are the main elements in consuming the resources of an organization. Therefore, the main objective of this investigation is to apply ABC to the Portuguese Air Force, by implementing it to the Air Base number 6, one of the air units that support a significant number of different airplanes. The results show a better product costing, especially because it is take in account not only direct costs but also the distribution of indirect costs, support costs that are very important in sustaining and maintaining a constant alert state as it is required to the Portuguese Air Force.
Starkoff, Brooke E. « Children Active To Stay Healthy (CASH) : Exercise as a Tool for Reducing Inflammation and Cardiovascular Risk in Sedentary, Pubescent Adolescents With Obesity ». The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366021918.
Texte intégralD'Urso, Carmelo. « La Prescrizione dell esercizio fisico nel diabete di tipo 2 ». Doctoral thesis, Università di Catania, 2012. http://hdl.handle.net/10761/1045.
Texte intégralBurkhardt, Natalie [Verfasser], et Ioannis [Akademischer Betreuer] Mylonas. « Vergleich der Serumkonzentrationen von Inhibin und Activin vor und nach adjuvanter Chemotherapie bei Patientinnen mit Mammakarzinom / Natalie Burkhardt. Betreuer : Ioannis Mylonas ». München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2015. http://d-nb.info/1081899719/34.
Texte intégralSams, Katharine. « Adam von Trott zu Solz' early life and political initiatives in the summer of 1939 ». Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=59426.
Texte intégralSong, Ji-hyeon. « Control and characterization of biomass activity and distribution in vapor-phase bioreactors for VOC removal / ». Full text (PDF) from UMI/Dissertation Abstracts International, 2001. http://wwwlib.umi.com/cr/utexas/fullcit?p3008448.
Texte intégralTrofe, Aurelio <1985>. « Effect of pulsed electromagnetic fields (pemfs) on muscle activity, tissue oxygenation and vo2 during exercise ». Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2022. http://amsdottorato.unibo.it/10447/1/EFFECT%20OF%20PULSED%20ELECTROMAGNETIC%20FIELDS%20%28PEMFS%29%20ON%20MUSCLE%20ACTIVITY%2C%20TISSUE%20OXYGENATION%20AND%20VO2%20DURING%20EXERCISE..pdf.
Texte intégralMiska-Schramm, Agata. « Impact of different doses of copper and aluminium on development, reproductive activity and reproductive behavior in bank vole ». Praca doktorska, 2015. https://ruj.uj.edu.pl/xmlui/handle/item/45133.
Texte intégralSchulz, Christian [Verfasser]. « Forecasting economic activity for Estonia / von Christian Schulz ». 2008. http://d-nb.info/991700775/34.
Texte intégralVerdugo, Olivares Miguel Anibal. « The star formation activity from the centers to the outskirts in intermediate redshift clusters ». Doctoral thesis, 2008. http://hdl.handle.net/11858/00-1735-0000-0006-B46C-5.
Texte intégralPeyker, Anna [Verfasser]. « Spatial regulation of Ras activity / vorgelegt von Anna Peyker ». 2006. http://d-nb.info/980142636/34.
Texte intégralJakubek, Tomasz. « Nanostructuration of manganese oxides by alkali cations towards higher activity in catalytic oxidation of soot and volatile organic compounds ». Praca doktorska, 2019. https://ruj.uj.edu.pl/xmlui/handle/item/87104.
Texte intégralThe main aim of the doctoral thesis was to design a catalyst for the lowtemperature combustion of soot and volatile organic compounds with efficiency competing with the currently used commercial systems. The research hypothesis tested in this work was based on the idea, that through the proposed structural (nanostructuration with alkali metal ions) and surface (decoration with noble metal nanoparticles) modifications of manganese oxides, the most important parameters for catalyst performance can be significantly optimized. In particular, the main focus was on the changes in electrodonor properties (activation of oxygen through electron transfer), lattice oxygen mobility (facilitation of the Mars-van Krevelen mechanism) as well as thermal stability (ensuring high activity over time). The development of the target catalytic system was carried out in the following stages: I. Determination of structural changes caused by the introduction of potassium ions into the manganese oxide structure (nanostructuration), II. Determination of the discrete influence of group I cations (A = H+, Li+, Na+, K+, Rb+ and Cs+) on the catalytic properties of birnessite (AMn4O8) and cryptomelane (AMn8O16) in the reactions of soot and volatile organic compound (methane, propane) oxidation, III. Functionalization with precious metal nanoparticles (Ag, Au, Pt, Pd) of mixed-oxide nanostructured phases (K-Mn-O) to extend their catalytic activity in volatile organic compound oxidation. A wide range of experimental methods were used to characterize the prepared catalytic systems: to determine the elemental composition (XRF, XPS), phase (XRD, RS), morphology (SEM, TEM), surface (N2-BET, XPS), thermal stability and activity in soot and volatile organic compound oxidation (TPR, TGA/DTA and TPO). An important factor in determining the mechanisms of the oxidation reactions were the investigations of electrodonor properties of the catalyst surface (work function through the Kelvin method) as well as the thermal desorption of potassium (SR-TAD). Initial studies on the modification of the structure of manganese oxides with alkali showed that the formation of nanostructured phases increases catalytic activity in soot combustion. The prepared layered (birnessite) and tunnelled (cryptomelane) structures owe their high activity to the directed potassium mobility (desorption directed by layers or tunnels, the possibility of high energy Rydberg atom desorption), favourable morphology (cryptomelane nanorods) and the increased activity of manganese redox centers (use of lattice oxygen in the Mars-van Krevelen mechanism). The beneficial effect of potassium promotion was demonstrated for both surface and structural promotion [Papers I, II, III]. The fourth Paper is devoted to investigating the effect of potassium desorption from the surface of cryptomelane, showing desorption in both atomic and ionic potassium forms as well as the high energy Rydberg species. The topic of Paper V was the thermal transformation of birnessite to cryptomelane, resulting in a phase with greater activity in loose contact with soot. As shown in Papers VI and VII, the introduction of different group I cations has a significant effect on the structure of birnessite and cryptomelane. The introduction of individual group I cations into the tunnel structure of cryptomelane cause a decrease in both the work function and the temperature of soot combustion. The results established the electron transfer from catalyst surface to oxygen as the first step in the oxidation mechanism over cryptomelane-based catalysts [Paper VI]. For birnessite, the introduction of group I cations also resulted in a decrease of work function in accordance with the lowering ionization energies of the group, however, the correlation of the work function with catalytic activity was in this case reversed. For the birnessite series, the catalytic activity was directly related to the amount of lattice oxygen desorbing from the material in the temperature window of the reaction (Mars-van Krevelen mechanism) [Paper VII] It was found, that surface promotion with platinum nanoparticles significantly improves the catalytic activity during volatile organic compound oxidation [Paper VII], while the introduction of silver and palladium nanoparticles improve the activity in soot combustion [Papers VI-VIII]. The comprehensive research carried out during the doctoral thesis allowed for the establishment of the various mechanisms for the oxidation of soot and volatile organic compounds over birnessite and cryptomelane. The obtained results indicated the possibility to functionalize manganese oxides towards high catalytic activity through alkaline nanostructuration (increased activity in soot combustion) and decoration with noble metal nanoparticles (increase of activity in volatile organic compound combustion). The most active systems allowed the lowering of the temperature of soot combustion by 300°C (Ag/KMn8O16, Pd/KMn4O8) and volatile organic compounds (CH4 and C3H8) by 350 - 400°C (Pt/KMn8O16).
Gu, Christian [Verfasser]. « Activity based protein profiling in plants / vorgelegt von Christian Gu ». 2009. http://d-nb.info/100212624X/34.
Texte intégralPilon, Christyne. « Mesurer les activités du crime organisé : analyse comparative de 45 services de police du Québec en 2003 ». Thèse, 2006. http://hdl.handle.net/1866/18167.
Texte intégralSchneider, Gaby [Verfasser]. « Stochastic models for near-synchronous neuronal firing activity / von Gaby Schneider ». 2006. http://d-nb.info/980264987/34.
Texte intégralSiegel, Daniela [Verfasser]. « Black Slate : surface alternation due to fungal activity / von Daniela Siegel ». 2010. http://d-nb.info/1010318284/34.
Texte intégralMeyer, Leonhard [Verfasser]. « The near infrared activity of Sagittarius A* / vorgelegt von Leonhard Meyer ». 2008. http://d-nb.info/987585924/34.
Texte intégralDas, Debashish [Verfasser]. « CALEB, an activity-dependent down regulated molecule / vorgelegt von Debashish Das ». 2005. http://d-nb.info/974292605/34.
Texte intégralLeckman, Jocelyn. « L'incidence des activités parascolaires et le vécu scolaire et personnel dans un contexte d'éducation privée pour filles ». Thèse, 2007. http://hdl.handle.net/1866/8189.
Texte intégralSolozobova, Valeriya [Verfasser]. « P53 regulation and activity in mouse embryonic stem cells / von Valeriya Solozobova ». 2010. http://d-nb.info/1011109379/34.
Texte intégralHartl, Maximilian Johannes [Verfasser]. « Foamy virus enzymes : activity, regulation and resistance / vorgelegt von Maximilian Johannes Hartl ». 2009. http://d-nb.info/1002078431/34.
Texte intégralSchröder, Christian [Verfasser]. « Chromospheric and coronal activity in solar-like stars / vorgelegt von Christian Schröder ». 2008. http://d-nb.info/990739066/34.
Texte intégralHehl, Ulrich [Verfasser]. « Embedding of synchronous spike activity in cortical networks / vorgelegt von Ulrich Hehl ». 2001. http://d-nb.info/963970216/34.
Texte intégralRoehm, Dietmar [Verfasser]. « Waves and words : oscillatory activity and language processing / vorgelegt von Dietmar Roehm ». 2005. http://d-nb.info/975268457/34.
Texte intégralShaaban, Saad [Verfasser]. « Synthesis and biological activity of multifunctional sensor, effector catalysts / von Saad Shaaban ». 2010. http://d-nb.info/101064324X/34.
Texte intégralPeltason, Lisa Bertha [Verfasser]. « Systematic computational analysis of structure-activity relationships / vorgelegt von Lisa Bertha Peltason ». 2009. http://d-nb.info/1003477364/34.
Texte intégralLu, Hsin, et 呂昕. « The Analysis of Basic Teaching Grammar Activity in Chinese:A Study of “Practical Audio-Visual Chinese Vol. 1” ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5te3b4.
Texte intégral國立臺北教育大學
語文與創作學系華語文教學碩士班
106
Teaching Chinese as a Second Language (TCSL) places great emphasis on the purpose and manner of teaching. During the teaching process, the curriculum design and grammar activities used by teachers will directly affect the learning outcomes of the students. For front-line Chinese teachers, the primary task is to enable students to apply their language or grammar points efficiently to practical life. This thesis organizes the basic principles for the design of grammar activities in the classroom and puts forward the “Sì Huà Sān Xìng” (Four Principles and Three Characteristics) design principles of grammar activities. This article collects seventy-four grammar activities, categorizing the content into three categories: Mechanical, Semi-Communicative and Activity-Based methods. The study shows that most grammar teaching activities mainly focus on simple sentence and grammar practice, without a variety of interactive grammar activities. Therefore, this study provides a wide range of grammar teaching activity designs. Based on the activity classification, this thesis uses the book “Practical Audio-Visual Chinese Vol. 1” (PAVC1) as grammar content of activity design for Chinese beginners: According to PAVC1, a total of twelve subjects, cover the corresponding twenty-Seven Chinese grammar teaching activities, which include nine mechanical activities, eight semi-communicative activities and ten activities. Besides, this thesis uses the basic level of Chinese grammar points from PAVC1 which has twelve units to design activities. In this study, I discuss the possibility of the design of teaching grammar activities, in line with the Chinese beginners in Taiwan. The effective and fun design of basic teaching grammar activity in Chinese discussed in the study may be helpful for first-line Chinese teachers and improve the effectiveness of actual Chinese teaching.