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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.
31

NOUVELLES METHODES D'IMAGERIE HAUTE RESOLUTION POUR L'ANALYSE DES COMPOSANTS NANOELECTRONIQUES

Shao, Kai 02 October 2012 (has links) (PDF)
Ce travail de thèse a contribué au développement de la techniques de test par faisceau laser en mode d'absorption deux photons (TPA). Cette technique a plus spécifiquement été utilisée pour la détection de défauts et l'injection de fautes dans les circuits intégrés.
32

Etude des effets singuliers transitoires dans les amplificateurs opérationnels linéaires par photogénération impulsionnelle non-linéaire

Jaulent, Patrice 29 June 2009 (has links) (PDF)
Ce travail présente l'étude des effets des radiations sur des composants analogiques commerciaux. Une méthode de caractérisation expérimentale de la sensibilité de ces composants, par le biais de simulations électriques et de stimulations laser non linéaire, est mise en place.
33

Diversidade microbiana e atividade enzimática de fungos provenientes de terra preta antropogênica do Baixo Amazonas

Cid, Wenderson dos Santos 30 July 2015 (has links)
Submitted by Geyciane Santos (geyciane_thamires@hotmail.com) on 2015-12-01T21:31:41Z No. of bitstreams: 1 Dissertação - Wenderson dos Santos Cid.pdf: 3292287 bytes, checksum: b491e92d7303a2a81e0f67b3b1ba2e36 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-12-02T17:48:54Z (GMT) No. of bitstreams: 1 Dissertação - Wenderson dos Santos Cid.pdf: 3292287 bytes, checksum: b491e92d7303a2a81e0f67b3b1ba2e36 (MD5) / Approved for entry into archive by Divisão de Documentação/BC Biblioteca Central (ddbc@ufam.edu.br) on 2015-12-02T18:13:34Z (GMT) No. of bitstreams: 1 Dissertação - Wenderson dos Santos Cid.pdf: 3292287 bytes, checksum: b491e92d7303a2a81e0f67b3b1ba2e36 (MD5) / Made available in DSpace on 2015-12-02T18:13:34Z (GMT). No. of bitstreams: 1 Dissertação - Wenderson dos Santos Cid.pdf: 3292287 bytes, checksum: b491e92d7303a2a81e0f67b3b1ba2e36 (MD5) Previous issue date: 2015-07-30 / FAPEAM - Fundação de Amparo à Pesquisa do Estado do Amazonas / The Anthropogenic Dark Earth (TPA) is presented in the form of small spots randomly distributed, especially in central and eastern Amazon. Denominations, as well as its unique characteristics, are due to human action of indigenous civilizations that lived in these archaeological sites. The large amount of stable organic matter present in these archaeological sites comes from the indigenous dumps where remains of animals, vegetables, fecal waste, human bodies, ceramic fragments, lithic artifacts and pyrogenic carbon were deposited. Among the microorganisms present in this soil, yeasts play a key role in the industry and the environment. This group is correlated with fermentation processes of various types of sugars, production of vitamins, enzymes, extracellular factors micocinogênicos. The objective of this study is to evaluate the diversity of microorganisms in TPA using electrophoresis on denaturing gradient gel (PCR-DGGE), relating the results with the physico-chemical characteristics of the soil. In addition, tolerance test at high temperatures, glucose and ethanol production enzymes and mycotoxins were conducted to select strains with possible biotechnological potential. We obtained 88 (eighty eight) isolated yeast. Of these, none bore the temperature was 50 ° C or tolerant to 50% glucose medium, and five (5) isolates (5.7%) 30% ethanol tolerated in the middle. Of the 88 isolates, thirteen (13) isolates (14.8%) had great activity for the production of amylase activity, 25 (twenty five) isolates (22%) were strongly positive for production caseinase and thirteen (13) isolates (14.8%) had great activity for the production of gelatinase. Still, 66 (sixty-six) isolates (75%) were positive for production of the enzyme cellobiase and (55.7%) were positive for esterase enzyme. To evaluate the mycocinogenic activity, 88 isolates were tested against strains of Candida krusei and Candida albicans. No isolate showed activity against C. krusei and 22 (twenty two) isolates (25%) showed activity against C. albicans. A 16S rRNA region (V6-V8 region) was sequenced for identification of prokaryotic and 18S rRNA region and the internal transcribed spacer (ITS) for identifying eukaryotes. The PCR-DGGE profiles of 18S rRNA region and ITS identified genera of yeast and filamentous fungi. The genera found for bacteria were Bacillus, Klebsiella, Pantoea, Enterobacter, Lactobacillus, Escherichia, Leuconostoc and actinomycetes, as Streptomyces and Mycobacterium. In fungal community, we observed the presence of Zygosaccharomyces, Lachancea, Saccharomyces, Cladosporium, Candida, Penicillium and Zygomycetes ascomycetes and uncultured. The pH value of the soil was 6.2. The soil had high levels of minerals, sodium except for (not detected) and aluminum (~ 0.1 cmol / dm3). The organic matter was found at a concentration of 3.84 dag / kg. Some groups of microorganisms had not been previously associated with soil TPA. Microbial diversity observed associated with chemical results demonstrate that high fertility of the soil, suggest that the same can be a source of microorganisms of interest. / A Terra Preta Antropogênica (TPA) apresenta-se na forma de pequenas manchas distribuídas aleatoriamente, sobretudo na Amazônia Central e Oriental. Sua denominação, bem como suas características únicas são decorrentes de ação antrópica de civilizações indígenas que viveram nestes sítios arqueológicos. A grande quantidade de matéria orgânica estável presente nestes sítios arqueológicos é oriunda das lixeiras indígenas onde restos de animais, vegetais, dejetos fecais, corpos humanos, fragmentos cerâmicos, artefatos líticos e carvão pirogênico foram depositados. Dentre os microrganismos presentes neste solo, as leveduras desempenham papel fundamental na indústria bem como no ambiente. Este grupo está correlacionado a processos fermentativos de diversos tipos de açúcares, produção de vitaminas, enzimas, e fatores extracelulares micocinogênicos. O objetivo deste trabalho é avaliar a diversidade de microrganismos presentes na TPA através de eletroforese em gel de gradiente desnaturante (PCR-DGGE), relacionando os resultados com as características físico-químicas do solo. Além disso, testes de tolerância a altas temperaturas, glicose e etanol, produção de enzimas e de micotoxinas foram realizados buscando selecionar isolados com possível potencial biotecnológico. Foram obtidos 88 (oitenta e oito) isolados leveduriformes. Destes, nenhum suportou a temperatura de 50ºC ou foi tolerante a 50% de glicose no meio, e 5 (cinco) isolados (5,7%) toleraram 30% de etanol no meio.Dos 88 isolados, 13 (treze) isolados (14,8%) apresentaram atividade amilolítica, 25 (vinte e cinco) isolados (22%) foram fortemente positivos para produção de caseinase e 13 (treze) isolados (14,8%) apresentaram atividade ótima para a produção de gelatinase. Ainda, 66 (sessenta e seis) isolados (75%) foram positivos para a produção da enzima celobiase e 49 (quarenta e nove) isolados (55,7 %)foram positivos para enzima esterase. Para avaliar a atividade micocinogênica, os 88 isolados foram testados frente a cepas de Candida krusei e Candida albicans. Nenhum isolado apresentou atividade frente a C. krusei e 22 (vinte e dois) isolados (25%) apresentaram atividade frente a C. albicans. A região 16S do rRNA (região V6-V8) foi sequenciada para a identificação de procariotos e a região 18S do rRNA e do espaçador interno transcrito (ITS) para a identificação de eucariotos. Os perfis de PCR-DGGE da região 18S do rRNA e ITS identificaram gêneros de leveduras e fungos filamentosos. Os gêneros encontrados para bactérias foram: Bacillus, Klebsiella, Pantoea, Enterobacter, Lactobacillus, Escherichia, Leuconostoc e actinobactérias, como Streptomyces e Microbacterium. Na comunidade fúngica, foi observada a presença de Zygosaccharomyces, Lachancea, Saccharomyces, Cladosporium, Candida, Penicillium e ascomicetos e zigomicetos não cultiváveis. O valor de pH do solo foi de 6,2. O solo apresentou importantes níveis de minerais, com exceção de sódio (não detectado) e alumínio (~0,1 cmol/dm3). A matéria orgânica foi encontrada na concentração de 3,84 dag/kg. Alguns grupos de microrganismos ainda não haviam sido previamente associados com solo de TPA. A diversidade microbiana observada associada aos resultados químicos que demonstram fertilidade elevada deste solo indicam que o mesmo pode ser fonte de microrganismos de interesse.
34

Induction of HPV-16 Late Gene Expression Through Use of Small Molecule Drugs

Andrén, Caroline January 2016 (has links)
Cervical cancer is the second most common cancer in women worldwide. The principal cause of cervical cancer is infection with human papillomavirus (HPV). HPV-16 is a high-risk virus and it is responsible for a high portion of all HPV-caused cancers. The HPV-16 genome consists of early and late genes. The virus initially infects basal cells of the cervix epithelium and in these cells early genes are expressed, whilst late genes, L1 and L2, are only expressed in the upper cell layers of the epithelium. Proteins encoded by the late genes are highly immunogenic, thus it is speculated that expression of the late genes earlier in the virus life cycle could lead to clearance of the virus due to interference of the immune system.     The aim of this study was to treat reporter cell lines with three different small molecule drugs to see if they had the ability to induce HPV-16 late gene expression. The reporter cell lines used in this study had been previously created by transfecting HeLa-cells with plasmids representing the HPV-16 genome. In these plasmids, L1 is replaced with a CAT reporter gene that encodes the CAT protein, which can be easily quantified using a sandwich ELISA.     Upon treating the reporter cell lines with TPA, a significant induction of late gene expression was detected. Furthermore, treatment with valproic acid showed some induction of late gene expression. In conclusion, TPA and valproic acid was deemed to have potential to act as a candidate drugs for treatment of HPV infections.
35

Rôle de l'inhibiteur de l'activateur tissulaire du plasminogène de type 1 (PAI-1) dans la dépression majeure chez la souris / The role of Plasminogen Activator Inhibitor type-1 (PAI-1) in major depressive disorders

Party, Helene 18 October 2017 (has links)
La dépression majeure représente l’une des affections les plus lourdes dans le monde, touchant plus de 350 millions depersonnes. La 5e édition du Diagnostic and Statistical Manual of Mental Disorders (DSM-V) est la référence mondiale utiliséepour poser le diagnostic de la pathologie chez l’humain. Bien que très nombreux, les antidépresseurs prescrits à ce jour restentencore malheureusement inefficaces pour 30% des patients. Dans ce contexte, il est fondamental de développer de nouvellesstratégies thérapeutiques pour soigner les patients. Des études récentes suggèrent, sans toutefois le démontrer véritablement,l’implication de l’axe « activateur tissulaire du plasminogène / inhibiteur de l’activateur tissulaire du plasminogène de type 1 »(axe tPA/PAI-1) dans la pathogenèse de la dépression majeure.La première partie de mes travaux a été consacrée à la mise au point d’un nouveau système d’évaluation comportementalede la dépression majeure chez la souris en modélisant de manière exhaustive et standardisée les symptômes cliniques du DSMV.La seconde partie de mes travaux a consisté à étudier les mécanismes d’action potentiels de l’axe tPA/PAI-1 dans ladépression majeure. Pour ce faire, j’ai tout d’abord caractérisé le phénotype comportemental de souris déficientes en tPA (souristPA-/-) et en PAI-1 (souris PAI-1-/-), ainsi que de leurs homologues de type sauvage, grâce au système fonctionnel d’évaluationinitialement mis en place. Par ailleurs, du fait de la forte comorbidité entre anxiété et dépression, les comportements de typeanxieux ont également été analysés chez ces animaux. Mes expériences ont révélé un phénotype de type dépressif, indépendantdu tPA, chez les souris déficientes en PAI-1, associé à des diminutions des concentrations de deux monoamines (sérotonine etdopamine) dans des structures cérébrales connues pour être impliquées dans la dépression majeure (hippocampe et noyau du litde la strie terminale). De surcroît, l’enrichissement modéré de l’environnement n’amenuise pas les symptômes de type dépressifdes souris PAI-1-/- mais conduit cependant à la disparition des troubles anxieux dépendants, quant à eux, de l’axe tPA/PAI-1.La troisième partie de ma thèse a été dédiée à des manipulations pharmacologiques visant à tester l’efficacitéd’antidépresseurs de type inhibiteurs de la recapture de la sérotonine. L’escitalopram produit un effet anxiolytique chez les sourisdéficientes en PAI-1, sans toutefois contrebalancer le phénotype dépressif chez ces mêmes sujets. Qui plus est, la fluoxétine, àla même dose que l’escitalopram, est toxique pour ces souris.Les résultats de ma thèse apportent ainsi la première démonstration de l’implication de PAI-1 dans la dépression majeurepar un mécanisme indépendant de son interaction avec le tPA. Ces travaux démontrent également que la souris PAI-1-/- constitueun outil essentiel et innovant pour étudier les mécanismes cellulaires et moléculaires sous-jacents à la dépression majeure, ainsique pour la recherche de cibles thérapeutiques visant à améliorer l’efficacité des traitements. / Major depressive disorder is one of the heaviest mental disorders in the world, affecting more than 350 people worldwide.It is in the fifth edition of Diagnostic and Statistical Manual of Mental Disorders (DSM-V) that the basis for an internationallyadmitted diagnosis was laid. Albeit diverse, existing antidepressants still remain ineffective for 30% of the patients. Under suchcircumstances, the necessity of developing new therapeutical strategies has arisen. Recent studies tend to suggest, withoutabsolute demonstration, the implication of the axis "Tissue Plasminogen Activator / Plasminogen Activator Inhibitor type-1"(tPA/PAI-1 axis) in the pathogenesis of major depressive disorders.The first section of my works has been devoted to the development of a new system of behavioural assessment in micefor depressive-like disorders, through a comprehensive and standardised modelling of clinical symptoms of DSM-V.The second section of my works has consisted in studying the potential action mechanisms of the tPA/PAI-1 axis in theemergence of depressive-like disorders. To do so, I first had to identify the behavioural phenotype of mice having from a tPA(tPA-/- mice) and PAI-1 (PAI-1-/-mice) deficiency as well as their wild-type counterparts through the system of assessment setup in the beginning of my research. In addition, due to the significant comorbidity between anxiety and depression, anxious-likebehaviours have been analysed as well. Among PAI-1-deficient mice, my experiments have disclosed a depressive-likephenotype, independent of tPA, and correlated with a decrease in the concentration of two monoamines (serotonin and dopamine)in brain structures known to be involved in major depressive disorder (hippocampus and bed nucleus of the stria terminalis).Besides, the moderate enrichment of the environment does not reduce the depressive-like symptoms of PAI-1-/- mice, yet inducesthe dissipation of dependent-tPA/PAI-1 axis anxious disorders.The third section of my PhD has been devoted to pharmacological experiments meant to assess the effectiveness ofantidepressants classified among selective serotonin reuptake inhibitors (SSRIs). Escitalopram produces anxiolytic falloutsamong PAI-1-deficient mice without for all that offsetting the depressive phenotype among these same mice. Moreover,fluoxetine administered in the same concentration as escitalopram has proven to be toxic for these mice.The results of these doctoral experiments have therefore demonstrated for the first time the implication of PAI-1 in theprocess of major depressive disorder through a mechanism independent from its interaction with tPA. These works have alsodemonstrated that PAI-1-/- mice make up a fundamental and cutting edge tool to study the cellular and molecular mechanismsunderlying major depressive disorder as well as to develop competent therapeutical targets intended to improve the efficiency oftreatments.
36

Trafic neuronal de l’activateur tissulaire du plasminogène (tPA) / Neuronal trafficking of tissue-type plasminogen activator (tPA)

Lenoir, Sophie 29 June 2018 (has links)
L’activateur tissulaire du plasminogène est une sérine protéase initialement découverte dans le compartiment vasculaire et qui joue un rôle prépondérant dans le processus de fibrinolyse. De manière intéressante, le tPA est également présent dans le parenchyme cérébral, où il est notamment exprimé par les neurones. Le tPA est impliqué dans de nombreuses fonctions cérébrales dont la plasticité synaptique, les processus de mémoire et d’apprentissage ainsi que dans la survie et la mort neuronales. Le tPA est capable d’augmenter la signalisation calcique induite par une activation des récepteurs N-Méthyl-D-Aspartate (NMDAR) : un mécanisme à la base de la plasticité synaptique mais également de la mort neuronale excitotoxique. Cependant, il peut également activer les récepteurs du facteur de croissance épidermique (EGFR) pour induire un effet anti-apoptotique sur les neurones. Afin de mieux comprendre les différentes fonctions du tPA sur les neurones, nous nous sommes intéressés à la distribution et au trafic intracellulaire du tPA. Pour cela, nous avons créé un nouvel outil afin d’imager le tPA dans les neurones en temps réel: un plasmide codant pour une protéine fusion, le tPA-HaloTag®.Premièrement, nos résultats montrent que le tPA est présent dans les axones et les dendrites des neurones corticaux matures en culture et qu’il est majoritairement présent dans le compartiment post-synaptique. Cette étude a également permis de voir que le tPA est stocké et libéré par des vésicules d’exocytose VAMP2, qu’il peut être endocyté par des vésicules Rab5, recyclé par des vésicules Rab11 et dégradé par des vésicules Rab7. Deuxièmement, nous avons montré que le tPA est présent dans les mêmes vésicules synaptiques que le facteur neurotrophique issu du cerveau (BDNF) : une neurotrophine importante pour le bon fonctionnement cérébral et dont la maturation dépend de l’activité protéolytique du tPA. Ce travail fournit une meilleure compréhension du rôle et de la distribution du tPA dans les neurones et ouvre de nouvelles voies de recherche dans l’implication de du tPA et du BDNF dans la survie neuronale. / Tissue-type Plasminogen Activator (tPA) is a serine protease, firstly discovered for its fibrinolytic role in the vascular compartment. Interestingly, tPA is also present in the brain parenchyma, being notably expressed by neurons. tPA displays important roles in synaptic plasticity(Danny Baranes et al., 1998; Melchor and Strickland, 2006), learning, memory processes(R Madani et al., 1999; R Pawlak et al., 2002), neuronal survival and death. tPA is able to promote N-Methyl-D-Aspartate Receptors (NMDAR)-induced calcium influx, promoting synaptic plasticity or excitotoxic neuronal death. tPA is also able to activate Epidermal Growth Factor Receptors (EGFR), a mechanism mediating its anti-apoptotic effect. To better understand the different functions of tPA on neurons, we studied the pattern of distribution and trafficking of neuronal tPA. For that, we designed a new tool to image tPA in living neurons: a plasmid encoding for a tPA-HaloTag® fusion protein. We first found that tPA is present in both axons and dendrites of mature cultured cortical neurons and preferentially at the post-synaptic part. Our results also showed that tPA is stored and released by VAMP2 exocytotic vesicles, and can be endocytosed by Rab5 vesicles, recycled by Rab11 vesicles and degraded by Rab7 vesicles. Furthermore, tPA is localized and sorted in the same vesicles than Brain-Derived Neurotrophic Factor (BDNF), one of the most important neurotrophins, Interestingly, BDNF maturation is dependent of tPA proteolytic activity. This work provides a better understanding of the role and distribution of tPA in living neurons and opens new avenues into the involvement of tPA and BDNF in neuronal survival.
37

Estudio colorimétrico de las tinciones ocasionadas por las técnicas de revascularización pulpar y su tratamiento

Jiménez Padilla, Juan Luis 02 February 2019 (has links)
Hoy en día, la estética dental se ha convertido en un área de gran repercusión, debido a la importancia que los individuos atribuyen a su sonrisa, por eso, realizar tratamientos que causen el mínimo impacto sobre la estética del paciente es esencial para dar por exitoso un tratamiento odontológico. La endodoncia regenerativa es uno de los desarrollos más interesantes en la odontología actual constituyendo una nueva frontera en la especialidad de la endodoncia. Mediante ella, se pretende reponer tejidos perdidos aplicando principios de ingeniería tisular, siendo la “revascularización pulpar”, la técnica más usada. Ésta, que se realiza en piezas dentales que han sufrido necrosis y aún no han completado su formación, consiste en revascularizar el conducto con sangre procedente de la papila dental apical para que las células madre recolonicen el conducto, regeneren la pulpa y, con ello, completen la maduración de la raíz. El principal problema recae en que ciertos materiales usados durante esta técnica pueden generar tinción en el diente. Por un lado, están los preparados antibióticos inyectados dentro del conducto para controlar la infección y, por otro, los cementos utilizados como barrera cervical que permanecen en contacto con la dentina y la sangre. Atendiendo a estas dos situaciones, el principal objetivo de la presente investigación es evaluar la capacidad de tinción, sobre dientes anteriores, que tiene, por un lado, el preparado de pasta triantibiótica (TAP) más utilizado para esta técnica (compuesto principalmente de Ciprofloxacino, Metronidazol y Minociclina) y, por otro lado, el Biodentine (un cemento a base de silicato de calcio de reciente aparición) utilizado como barrera cervical en contacto con sangre. Como objetivo secundario se propuso la aplicación de un agente blanqueador con el fin de evaluar el efecto de recuperación del color según la procedencia de la tinción. Para realizar los experimentos, se utilizaron treinta dientes intactos de origen humano a los cuales se les cortaron los ápices y se les ensanchó el conducto, para reproducir dientes inmaduros con ápice abierto. Tras realizar la preparación, éstos se dividieron en 3 grupos, de diez especímenes cada uno y se conservaron hasta el inicio de los ensayos en cámara de humedad 100% y 37ºC, para simular el entorno bucal. Los experimentos se dividieron en dos fases: la primera de ellas comprendió la etapa en la que los especímenes recibieron tratamientos de revascularización pulpar y la segunda, la etapa en la que los especímenes recibían blanqueamientos dentales. Durante la fase l al grupo 1 se le inoculó sangre de origen humano, como grupo control, por un total de 3 semanas, durante las cuales se tomaron registros colorimétricos en la semana 1,2 y 3. Al grupo 2 se le aplicó TAP durante 3 semanas para después removerla e inocular sangre hasta completar los 3 meses. En este grupo se tomaron registros colorimétricos en la semana 2, 3, 4, 6, 8 y 12. Al grupo 3 se le inoculó sangre y se realizó un sellado cervical con Biodentine durante 3 meses, durante los cuales se tomaron registros colorimétricos en la semana 2, 4, 8 y 12. En la fase 2 se realizaron tres sesiones de blanqueamiento a los grupos 2 y 3, por un total de 3 semanas, durante las cuales se tomaron registros colorimétricos en la semana 1, 2 y 3. Para las mediciones de color se utilizó un Telespectroradiómetro (CS-2000 Minolta) y los especímenes fueron colocados en una cabina de luz Verivide CAC 150 bajo luz fluorescente simuladora de luz diurna D65. El dispositivo registró los valores de reflectancia espectral de cada uno y, tras realizar la división entre el estímulo espectral correspondiente a la muestra por el estímulo espectral del blanco patrón, los datos se analizaron en CIE-L*a*b* y CIEDE2000. Los resultados mostraron variación de color perceptible ( 3,7) durante la primera fase en todos los grupos, siendo el grupo 2 el que más tinción mostró ( 26,12), seguido del grupo 1 ( 15,49) y por último el grupo 3, con un valor dos veces menor que el alcanzado en el grupo 3 ( 13,48). El atributo que más influyó al cambio de color fue el cambio de claridad y después el del croma ( ), siendo la variación tonal ( ) prácticamente constante durante todo el proceso. Durante la segunda fase, los grupos 2 y 3 lograron recuperar gran parte del color perdido ( 8,31 y 7,26 respectivamente), siendo ligeramente mejores los resultados del grupo 3. Hay que reseñar que el grupo 2, partiendo con cierta desventaja frente al grupo 3 ya que al finalizar el tratamiento sus especímenes estaban más teñidos, consiguió reducir de forma considerable su tinción y acercarse a cifras parecidas a las del grupo 3. Con todo, algunos especímenes del grupo 2 conservaban un halo de tinción en la zona del tercio incisal más gingival. De estos resultados se puede concluir que el uso de TAP produce tinción en la dentina y que el empleo de Biodentine como material sellador, aunque en menor medida, no impide que exista tinción. Por otro lado, el uso de agentes blanqueadores a base de peróxido de hidrógeno al 50%, hidróxido amónico al 0,4% y perborato de sodio monohidratado al 15% puede ayudar a devolver gran parte del color perdido en revascularización pulpar, pero no su totalidad. Se requieren más estudios que investiguen sobre otras formas de controlar la infección sin que generen tinción en la dentina, al igual que otros donde se comprueben nuevos CSC para poder usar en revascularización pulpar y que sean estables en presencia de sangre.
38

Third-Party Administrators in Public-Private Partnerships: A Multiple Case Study

Haug, Beata Ewa 01 January 2015 (has links)
Local public agencies turn to public-private partnerships (PPPs) to allow greater participation by private firms in delivering public services. In the last 25 years, private organizations had been reluctant to form PPPs with local government agencies because of the complex procurement processes and the bureaucratic business environment. Guided by the decision theory and complex adaptive systems theory, the purpose of this multiple case study was to identify what information leaders within third-party administrators (TPAs) need regarding the contracting process in the formation of PPPs. The data collection process consisted of face-to-face interviews with 4 executive leaders of 3 Wisconsin state licensed TPAs and examination of contracts and plan service agreements (PSAs) between TPAs and local government agencies. Dada was analyzed using the Yin 5-step data analysis method and cross-case analysis. The results indicated that TPA leaders must understand collaborative leadership, key players, roles and responsibilities, and specialized services in the formation of a PPP; change and transfer of controlling interest, and understanding the strengths and weakness of contract provisions are complex business systems that influence the decision to form a PPP; ERISA and compliance with applicable federal and state laws are critical contract stipulations to consider in the formation of PPPs; that market assessment, health care reform, and transparency between private and public partners are critical in the formation of PPPs. The implications for social change include new insights for PPP leaders that may enhance the effectiveness of social services and save taxpayers' money.
39

Association of Geographical Factors With Administration of Tissue Plasminogen Activator for Acute Ischemic Stroke / 急性期脳梗塞に対するtPA投与と地理的条件の関連

Kunisawa, Susumu 24 March 2014 (has links)
京都大学 / 0048 / 新制・課程博士 / 博士(医学) / 甲第18126号 / 医博第3846号 / 新制||医||1001(附属図書館) / 30984 / 京都大学大学院医学研究科医学専攻 / (主査)教授 中山 健夫, 教授 小池 薫, 教授 宮本 享 / 学位規則第4条第1項該当 / Doctor of Medical Science / Kyoto University / DFAM
40

Stroke Study: Novel Animal Models and Innovative Treatment Strategy

Yu, Xinge 04 August 2016 (has links)
No description available.

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