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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
61

Therapiemöglichkeiten der Alzheimer-Krankheit durch passive Immunisierung mit dem NT4X-Antikörper im Tg4-42hom-Mausmodell / Alzheimer therapy with passive immunization using the antibody NT4X in Tg4-42hom mice

Borgers, Henning 04 July 2017 (has links)
No description available.
62

Produktentwicklung für körpernahe Bekleidung unter Berücksichtigung der textilen Materialeigenschaften

Kirstein, Tünde 09 April 2001 (has links)
Im Rahmen der Arbeit wurden die Zusammenhänge zwischen den Materialeigenschaften und der Schnittkonstruktion für körpernahe Bekleidung untersucht, um eine konstante und reproduzierbare Passform zu sichern. Es wurden Materialkenngrößen ermittelt, die einen entscheidenden Einfluss auf die Passform haben, und geeignete Prüfverfahren zur Bestimmung dieser Materialparameter analysiert. Dazu zählen bei Maschenwaren, die für diese Produktgruppe hauptsächlich eingesetzt werden, vor allem die Zugelastizität und das Dimensionsverhalten. Es wurden Konstruktionsprinzipien entwickelt, mit denen die Materialparameter systematisch in der Schnittgestaltung berücksichtigt werden können. Die Konstruktionsmethoden wurden auf CAD-Systeme umgesetzt. Die erarbeiteten Konstruktionsgrundlagen geben den Bekleidungsherstellern die Möglichkeit, die Produktionsentwicklungszeiten zu reduzieren und so die Flexibilität zu steigern.
63

Návrh řešení sil. I/42 – VMO v Brně v úseku MÚK Hlinky – MÚK Velodrom / Road I/42 – Brno Expressway in section MUK Hlinky – MUK Velodrom

Motl, Vojtěch January 2018 (has links)
The topic of this master thesis is the solution of Brno expressway in section between interchanges Hlinky and Velodrom. The thesis introduces two alternatives of height trajectory of Brno expressway. In first alternative the expressway is above current terrain on the estacade. The local roads are situated under the estacade on the terrain level. The neighboring areas stay intouched. In the second alternative the author presumes the reconstruction of part of the exhibition centre. In this case the expressway is situated on the terrain level and rises up just before interchange Velodrom. The local area is serviced by the new road situated in reconstructed area and by two bridges over the expressway. The next topic of the thesis is the solution of interchange Velodrom. Both alternatives are compared in the end.
64

Les formations à l'innovation entre tradition et rupture / Innovation training between tradition and rupture

Liu, Tiphaine 19 June 2018 (has links)
Dans un contexte actuel où l'on parle de marché mondial de l'enseignement supérieur et où le thème de l'innovation est devenu omniprésent dans les objectifs des établissements d'enseignement professionnel, la formation à l'innovation est un enjeu particulièrement stratégique. Notre recherche s'interroge sur la réalisation de cet enseignement dans les établissements. Une formation à l'innovation peut-elle se faire dans le cadre de l'enseignement présent, fruit d'une tradition où l'innovation n'avait pas son statut actuel, ou exige-t-elle une rupture avec cette tradition ?Après avoir défini notre objet de recherche et précisé les concepts d'innovation, de formation et de tradition), nous avons construit à travers une démarche théorique et empirique un cadre d'analyse et d'évaluation des formations à l'innovation pour réaliser des études de cas décrivant les processus pédagogique et organisationnel à l'œuvre dans les deux voies choisies : intégration ou rupture. Nous montrons que l'application de ce cadre d'analyse à plusieurs de ces formations indique comme résultat que la formation à l'innovation repose sur l'engagement des apprenants dans un travail de construction de leur identité d'innovateur. D’où la problématique à laquelle cette thèse cherche à répondre : l'innovation peut-elle être considérée comme une matière à enseigner (acquisition de savoirs et de pratiques) ou repose-t-elle plutôt sur la construction d'une identité spécifique de l’apprenant ? La formation à l’innovation consisterait alors à accompagner par un dispositif adapté (que nous appelons environnement émancipant) la construction identitaire de l'innovateur. / In a mondial competitive environnement in which the educational institutions are living today with objectives of training innovative people, innovation training is a critical subject. How do these institutions are going to train innovators ? Does an innovation training can be included in a traditional pedagogical system ? Or a rupture would be logical and necessary ?After defining our research subject and specifying the concepts of innovation, training and tradition, we propose a framework for the analysis and evaluation of training courses in innovation. We apply this framework in case studies which describe integrative or breaking-off processes, from both the pedagogical and organizational perspectives. The application of this analytical framework to several of these training courses suggests that training in innovation relies on the commitment of the trainees to the building of their identity as an innovator. Consequently, this thesis attempts to answer the following question: can innovation be considered as a topic to be taught (through the acquisition of knowledge and practices by the trainee) or does it rather rely on the construction of a specific identity by the trainee? In the latter case, training for innovation should focus on supporting the construction of their identity by the innovator through the use of an adequate system that we call ‘emancipating environment’.
65

Écrire le monde en marchant. Une approche de la modernité en Bohême et en France du début du XIXe siècle aux années 1940 / Walking and writing the world. An approach to modernity in Bohemia and France from the beginning of the 19th century to the 1940's / Jít a psát. Zpusob poznávání moderního sveta v Cechách a ve Francii od zacátku 19. století do roku 1948

Matysová, Kristýna 19 March 2011 (has links)
Dans les récits allégoriques chrétiens, le pèlerin est une figure symbolique représentant le parcours de l’Homme vers le Paradis. À partir de la seconde moitié du XIXe siècle, les poètes, promeneurs et flâneurs poursuivent la quête d’un au-delà entre les murs des grandes villes. La présente thèse examine les cas de figures des flâneries modernes. En étudiant des textes qui mettent en scène le thème de la marche, ce travail propose une analyse chronologique des approches de la Modernité dans la littérature et dans les arts français et tchèques du début du XIXe siècle aux années 1940. En étudiant les motifs constituants des récits de promenades modernes et le rôle du contexte historique et social de leur création, cette thèse apporte une contribution à la réflexion sur les parallèles culturels entre la France et la Bohême. En outre, elle livre une analyse de divers genres littéraires nés de la nécessité de l’Homme d’écrire le monde en marchant. / In Christian allegoric texts the Pilgrim traditionally symbolizes the journey of mankind to heaven. From the second half of the 19th century on, poets, travelers, and vagabonds pursued the quest of an afterlife from within city walls. This dissertation examines the different representations of modern wandering via an in-depth analysis of the theme as encountered in French and Czech literature and arts from the early 19th century to the 1940's. It reveals, in chronological order, the different artistic approaches to modernity. By bringing out the various patterns that emerge from the texts, while taking into account the historical and social contexts in which they were created, this work adds to existing knowledge on the cultural similarities between France and Bohemia. It also examines the different literary genres which originate from mankind’s need to walk and write the world. / V krestanských alegorických textech je poutník symbolickou postavou na ceste do Ráje.Od druhé poloviny devatenáctého století básníci, chodci a flânéri, se pokoušejí odhalitskrytou tvár reality na ulicích velkomest. Tato disertacní práce analyzuje podobymoderního poutnictví. Chronologicky razené rozbory del, týkajících se tématu chuze,sledují vývoj tvurcích postoju k modernímu svetu ve francouzské a ceské literature avýtvarném umení od zacátku devatenáctého století do konce ctyricátých let stoletídvacátého. Studiem dílcích motivu moderních poutnických textu, zasazenýchdo historického a sociálního kontextu doby jejich vzniku, tato práce prispívá k prohloubenípoznatku o kulturních paralelách mezi Francií a Cechami. Navíc tato disertace zkoumározlicné literární žánry, pro než byla prvotním impulsem potreba autora jít a psát.
66

Avaliação dos efeitos neuroprotetores do extrato etanólico de Caliphruria subedentata e o fármaco galantamina em células indiferenciadas SH-SY5Y expostas ao peptídeo beta-amiloide(1-42) / Evaluation of neuroprotective effects of ethanolic extract of Caliphruria subedentata and drug galanthamine on undifferentiated SH-SY5Y cells exposure to amyloid beta peptide(1-42)

Castillo Ordóñez, Willian Orlando 10 November 2016 (has links)
A Doença de Alzheimer (DA) é o tipo mais comum de demência em idosos, a etiologia é multifatorial e a fisiopatologia da doença é complexa, com um novo caso acontecendo a cada sete segundos; globalmente, a doença está se tornando em uma lenta pandemia. Bioquimicamente, a DA é caracterizada pela presença das placas neuríticas (PNs) e os novelos neurofibrilares (NNFs). O peptídeo beta peptide1-42 (A?(1-42)) é o principal componente das placas neuríticas e tem sido fortemente associado ao estresse oxidativo, desregulação colinérgica e morte celular. Os múltiplos mecanismos envolvidos na patogênese criam consideráveis dificuldades para identificar alvos terapêuticos apropriados. As abordagens terapêuticas atuais melhoram temporariamente os sintomas da DA; no entanto, apesar de esforços intensivos, nenhum dos tratamentos disponíveis hoje conseguiu alterar o curso da doença. Porém, algumas das terapias mais relevantes para o tratamento da doença estão baseadas na atividade inibidora da acetilcolinesterase (AChE). Nos últimos anos, os alcaloides pertencentes à família Amaryllidaceae têm recebido muita atenção devido à atividade anticolinérgica e antioxidante. A galantamina foi o primeiro alcaloide isolado a partir de diferentes espécies de Amaryllidaceas e é o mais recente inibidor da AChE aprovado para o tratamento sintomático da DA. Este fato tem motivado a pesquisa de outros alcaloides como possíveis moduladores da doença em adição à atividade inibitória da AChE. Diante disso, o objetivo deste estudo foi investigar se o extrato de Caliphruria subedentata e a galantamina modulam a neurotoxicidade induzida pelo A?(1-42) na linhagem celular SH-SY5Y indiferenciada. Para compreender os mecanismos de neuroproteção, um conjunto de ensaios foi realizado tais como atividade inibitória da AChE, ensaios clonogênico, micronúcleos com bloqueio na citocinese celular (CBMNcyt), cometa; análises por microscopia eletrônica de transmissão (MET) e de metilação. Os resultados mostraram que tanto o extrato quanto a galantamina diminuíram significativamente a citotoxicidade e genotoxicidade induzida pelo A?(1-42). Além disso, ambos os tratamentos modularam alterações morfológicas mitocondriais induzidas pelo peptídeo. Em conclusão, os resultados deste estudo demonstraram que, em adição à atividade inibitória da AChE, tanto o extrato de C. subedentata quanto a galantamina exercem propriedades antigenotóxicas. Essas propriedades relevantes da Amaryllidaceaes e o fármaco tornam-se um potencial valioso para continuar sendo explorado. / Alzheimer´s disease (AD) is the most common type of dementia in elderly population, the etiology is multifactorial and the pathophysiology of the disease is complex, with a new case occurring every seven seconds; globally, the disease itself is becoming a slowly pandemic. Biochemically, the AD is characterized by presence of the neuritic plaques and neurofibrillary tangles. Amyloid beta peptide1-42 (A?(1-42)) is the principal component of neuritic plaques and it has been strongly associated with oxidative stress, cholinergic deregulation and cell death. The multiple mechanisms involved in the pathogenesis create considerable difficulty to identify appropriate targets. The current therapeutics approaches for AD improve temporally the symptoms; and despite intensive efforts, none of the treatments available today alter the course of disease. Nervertheless, some of the most relevant therapies for the treatment of disease are based on acetylcholinesterase (AChE) inhibitor activity. In recent years, alkaloids belonging Amaryllidaceae family have received great attention due to the well-known anticholinergic and antioxidant activity and the galanthamine was the first alkaloid isolated from different species of Amaryllidacea and it is the most recently AChE inhibitor approved for the symptomatic treatment of AD. This fact has motivated the screening of other alkaloids as possible modulators of disease in addition acetylcholinesterase activity. Purpose this study was to investigate whether C. subedentata extract and galanthamine modulate A?(1-42)- induced neurotoxicity in the undifferentiated SH-SY5Y cell line. To understand the mechanisms of the neuroprotection, a set of biomarkers such as AChE activity, clonogenic, cytokinesis block micronucleus cytome (CBMNcyt) and comet assays; beside transmission electron microscope (TEM) and methylation analyses were realized. The results showed that C. subedentata extract and galanthamine were capable to significantly reduce the A?(1-42)- induced cytotoxicity and genotoxicity. Furthermore both treatments modulated A?(1-42)- induced mitochondrial morphological alterations. In conclusion, this study demonstrated that in addition to inhibition of acetylcholinesterase (AChE), the extract of C. subedentata and galanthamine exert antigenotoxic properties. This relevant property of Amaryllidaceaes and galanthamine are worthwhile exploring further which may improve the development of new diseases-modifying agents.
67

Urocortin 2 Aktivierte Signalwege in isolierten Kaninchen-Ventrikelmyozyten / Urocortin 2 Activated signaling pathways in isolated myocyte of the ventricle of rabbits

Renz, Susanne 31 July 2012 (has links)
No description available.
68

Análise de significância e caracterização de fontes estacionárias individualizadas visando o monitoramento atmosférico não radiológico no campus IPEN/CNEN-SP / Analysis of significance and characterization of individualized stationary sources for non-radiological atmospheric monitoring at campus of IPEN / CNEN-SP

Camila Fernanda Rocha Teles Tanzillo Santos 15 December 2017 (has links)
Devido ao compromisso com a melhoria do meio ambiente, aliado às crescentes exigências dos órgãos ambientais, e a necessidade de identificar a contribuição de cada atividade/processo desenvolvido em institutos de pesquisas, quanto ao impacto destes à qualidade do ar, este trabalho teve a finalidade de desenvolver um modelo de inventário e aplicar uma metodologia de cálculo, que permita estimar a emissão de poluentes atmosféricos, decorrentes das atividades dos centros de pesquisa e desenvolvimento do Instituto de Pesquisas Energéticas e Nucleares (IPEN/CNEN-SP). O estudo foi motivado pela ausência de metodologias de cálculo de emissões atmosféricas específicas para fontes fixas como capelas químicas de exaustão e da necessidade em atender as condicionantes estabelecidas no licenciamento ambiental da instituição. Para a elaboração dos cálculos foram adotados os fatores de emissão e a equação descrita na AP-42 da EPA- Environmental Protection Agency. Foram utilizadas como abordagens de cálculo de emissões: a) Mensuração direta (por meio do inventário de emissões atmosféricas); e b) Estimativa de emissões (utilizando estimativa da taxa de emissão calculada a partir do fator de emissão apropriado). O estudo foi detalhadamente realizado tendo como base inicial o inventário e o modelo de estimativa de emissão atmosférica das fontes fixas aplicado no Centro de Química e Meio Ambiente (CQMA). Cabe ressaltar que o monitoramento online da qualidade do ar no campus é realizado em estação fixa, parceria IPEN CETESB, na estação CETESB Cid. Universitária IPEN - USP. O estudo possibilitou estabelecer, de forma efetiva, o Programa de Monitoramento e Controle de Emissões Atmosféricas (PMEA IPEN), podendo servir de modelo para outras instituições de Pesquisa, Desenvolvimento & Inovação. Como produto final obteve-se um inventário de emissões atmosféricas de fontes fixas da instituição, a taxa de emissão de poluentes, bem como a concentração de poluentes emitidos. A estimativa das emissões não ultrapassou os limites dispostos na legislação em âmbito nacional e estadual. / Atmospheric Emission Factors and Significance Analysis applied to the Air Quality Management in the IPEN / CNEN-SP Campus due to the commitment to improve the environment, combined with the increasing demands of environmental agencies, and the need to identify the contribution of each activity / process developed in research institutes, as well as the impact of these on the air quality, this work aims to develop an inventory model and apply a methodology of calculation for measuring the emission of atmospheric pollutants, arising from the activities of the research and development centers of the Nuclear and Energy Research Institute (IPEN / CNEN-SP). The study was motivated by the absence of atmospheric emission calculation methodologies specific to stationary sources, such as fume hoods. For preparation of the calculations, the emission factors and the equation described in the AP-42 EPA- Environmental Protection Agency were adopted. The emission calculation methods used were: a) Direct measurement (through the inventory of air emissions); and b) Emissions estimate (using the emission rate estimate calculated from the appropriate emission factor). The study was carried out in detail, based on the inventory and model of atmospheric emission of fixed sources applied at the Chemistry and Environment Center (CQMA). It should be noted that online monitoring of air quality on campus is carried out at a fixed station, IPEN CETESB partnership, at CETESB Cid station. University - IPEN - USP. The study has made it possible to establish, in an effective way, the Atmospheric Emission Monitoring and Control Program (PMEA - IPEN), which could serve as a model for other Research, Development and Innovation institutions. The final product was an inventory of atmospheric emissions from fixed sources of the institution, the emission rate of pollutants, as well as the concentration of pollutants emitted. The estimation of the emissions did not exceed the limits established in the national legislation and state level.
69

Avaliação dos efeitos neuroprotetores do extrato etanólico de Caliphruria subedentata e o fármaco galantamina em células indiferenciadas SH-SY5Y expostas ao peptídeo beta-amiloide(1-42) / Evaluation of neuroprotective effects of ethanolic extract of Caliphruria subedentata and drug galanthamine on undifferentiated SH-SY5Y cells exposure to amyloid beta peptide(1-42)

Willian Orlando Castillo Ordóñez 10 November 2016 (has links)
A Doença de Alzheimer (DA) é o tipo mais comum de demência em idosos, a etiologia é multifatorial e a fisiopatologia da doença é complexa, com um novo caso acontecendo a cada sete segundos; globalmente, a doença está se tornando em uma lenta pandemia. Bioquimicamente, a DA é caracterizada pela presença das placas neuríticas (PNs) e os novelos neurofibrilares (NNFs). O peptídeo beta peptide1-42 (A?(1-42)) é o principal componente das placas neuríticas e tem sido fortemente associado ao estresse oxidativo, desregulação colinérgica e morte celular. Os múltiplos mecanismos envolvidos na patogênese criam consideráveis dificuldades para identificar alvos terapêuticos apropriados. As abordagens terapêuticas atuais melhoram temporariamente os sintomas da DA; no entanto, apesar de esforços intensivos, nenhum dos tratamentos disponíveis hoje conseguiu alterar o curso da doença. Porém, algumas das terapias mais relevantes para o tratamento da doença estão baseadas na atividade inibidora da acetilcolinesterase (AChE). Nos últimos anos, os alcaloides pertencentes à família Amaryllidaceae têm recebido muita atenção devido à atividade anticolinérgica e antioxidante. A galantamina foi o primeiro alcaloide isolado a partir de diferentes espécies de Amaryllidaceas e é o mais recente inibidor da AChE aprovado para o tratamento sintomático da DA. Este fato tem motivado a pesquisa de outros alcaloides como possíveis moduladores da doença em adição à atividade inibitória da AChE. Diante disso, o objetivo deste estudo foi investigar se o extrato de Caliphruria subedentata e a galantamina modulam a neurotoxicidade induzida pelo A?(1-42) na linhagem celular SH-SY5Y indiferenciada. Para compreender os mecanismos de neuroproteção, um conjunto de ensaios foi realizado tais como atividade inibitória da AChE, ensaios clonogênico, micronúcleos com bloqueio na citocinese celular (CBMNcyt), cometa; análises por microscopia eletrônica de transmissão (MET) e de metilação. Os resultados mostraram que tanto o extrato quanto a galantamina diminuíram significativamente a citotoxicidade e genotoxicidade induzida pelo A?(1-42). Além disso, ambos os tratamentos modularam alterações morfológicas mitocondriais induzidas pelo peptídeo. Em conclusão, os resultados deste estudo demonstraram que, em adição à atividade inibitória da AChE, tanto o extrato de C. subedentata quanto a galantamina exercem propriedades antigenotóxicas. Essas propriedades relevantes da Amaryllidaceaes e o fármaco tornam-se um potencial valioso para continuar sendo explorado. / Alzheimer´s disease (AD) is the most common type of dementia in elderly population, the etiology is multifactorial and the pathophysiology of the disease is complex, with a new case occurring every seven seconds; globally, the disease itself is becoming a slowly pandemic. Biochemically, the AD is characterized by presence of the neuritic plaques and neurofibrillary tangles. Amyloid beta peptide1-42 (A?(1-42)) is the principal component of neuritic plaques and it has been strongly associated with oxidative stress, cholinergic deregulation and cell death. The multiple mechanisms involved in the pathogenesis create considerable difficulty to identify appropriate targets. The current therapeutics approaches for AD improve temporally the symptoms; and despite intensive efforts, none of the treatments available today alter the course of disease. Nervertheless, some of the most relevant therapies for the treatment of disease are based on acetylcholinesterase (AChE) inhibitor activity. In recent years, alkaloids belonging Amaryllidaceae family have received great attention due to the well-known anticholinergic and antioxidant activity and the galanthamine was the first alkaloid isolated from different species of Amaryllidacea and it is the most recently AChE inhibitor approved for the symptomatic treatment of AD. This fact has motivated the screening of other alkaloids as possible modulators of disease in addition acetylcholinesterase activity. Purpose this study was to investigate whether C. subedentata extract and galanthamine modulate A?(1-42)- induced neurotoxicity in the undifferentiated SH-SY5Y cell line. To understand the mechanisms of the neuroprotection, a set of biomarkers such as AChE activity, clonogenic, cytokinesis block micronucleus cytome (CBMNcyt) and comet assays; beside transmission electron microscope (TEM) and methylation analyses were realized. The results showed that C. subedentata extract and galanthamine were capable to significantly reduce the A?(1-42)- induced cytotoxicity and genotoxicity. Furthermore both treatments modulated A?(1-42)- induced mitochondrial morphological alterations. In conclusion, this study demonstrated that in addition to inhibition of acetylcholinesterase (AChE), the extract of C. subedentata and galanthamine exert antigenotoxic properties. This relevant property of Amaryllidaceaes and galanthamine are worthwhile exploring further which may improve the development of new diseases-modifying agents.
70

Analyse neurodegenerativer Prozesse im Gyrus Dentatus im Tg4-42-Mausmodell der Alzheimerdemenz / The analysis of neurodegenerative processes in the dentate gyrus using the Tg4-42 mouse model of Alzheimer's disease

Schubert, Nils 05 April 2018 (has links)
No description available.

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