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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.
71

Quand la musique se fait l'écho du Soi ! : études des effets d’un contexte musical autobiographique sur l’activité cérébrale de patients en coma et éveil de coma et de sujets sains / Composing the self with music ! : effects of autobiographical musical context on cerebral functioning in patients with disorders of consciousness and healthy subjects

Castro, Maïté 10 December 2015 (has links)
Chez les patients présentant un trouble de la conscience l'évaluation de leurs fonctions cognitives résiduelles est un enjeu clinique majeur, limité par la faible sensibilité des tests. La musique en tant que stimulation émotionnelle en lien avec la mémoire autobiographique pourrait représenter une stimulation cognitive de choix chez cette population. De nombreuses études ont rapporté les effets bénéfiques d'une exposition à la musique sur le fonctionnement cognitif, à la fois normal et pathologique, mais aucune n'a permis de déterminer objectivement de tels effets chez les patients en état de conscience altérée. Ce travail de thèse s'articule en trois études principales : 1) la présentation d'extraits musicaux préférés chez des patients en éveil de coma est liée à une importante connectivité cérébrale au sein de structures corticales participant à la perception de la musique et à la récupération d'informations autobiographiques ; 2) la réponse cognitive au propre prénom P300 obtenue chez des patients en éveil de coma est évoquée plus souvent lorsque ce dernier est précédé d'un extrait musical préféré ; 3) un contexte musical personnel familier entraîne l'activation de multiples structures cérébrales notamment celles impliquées dans l'analyse de stimulations autobiographiques. L'ensemble de ces travaux témoigne du recrutement de nombreux réseaux cérébraux lors de l'écoute musicale que ce soit chez les sujets sains et les patients en éveil de coma et suggère l'existence d'un possible amorçage autobiographique par la musique. Ainsi, l'emploi de la musique permettrait de favoriser l'expression des capacités cognitives et conscientes des patients en coma et en éveil de coma / Evaluating the residual cognitive functions in patients with disorders of consciousness is a major clinical challenge, restricted by the poor sensitivity of clinical tests. Music as a highly familiar and emotional stimulus in close relationship with autobiographical memory may be constitute a relevant tool for cognitive stimulation. Numerous studies have demonstrated that music listening conveys beneficial effects on cognitive processes as well as both normal and pathologic cerebral functioning. Surprisingly, no quantitative study has evaluated the potential effects of music on cognition and consciousness in comatose and post-comatose patients. The present thesis revolves around three studies: 1) an increased functional connectivity during exposure of favourite music is shown in cortical structures linked to music perception and memory search processes for post-comatose patients; 2) the cerebral response to the first name, the P300 component, is more often observed in post-comatose patients when its presentation was preceded by a preferred musical excerpt; 3) listening to personally relevant music is associated to activations in many cerebral structures, particularly in regions linked to autobiographical memory retrieval and self-processing. The whole of this work reveals that listening music involves numerous cerebral networks whether it be in healthy subjects or post-comtaose patients. These results also suggest the presence of an autobiographical priming by music. Finally, the use of music in clinical context can be boost the cognition in comatose and post-comatose patients
72

Estudo comparativo das alterações morfológicas e vasculares do útero durante a prenhez precoce de embriões de clones bovinos produzidos por SCNT em três diferentes apresentações gestacionais / Comparative study of morphological and vascular changes of the uterus during the early pregnancy of bovine embryos clones produced by SCNT in three different gestational phenotypes

Marcelo de Luna Freire Oliveira 19 July 2017 (has links)
A clonagem por transferência de núcleo de células somáticas (SCNT) em bovinos é uma biotécnica ineficiente, porém é uma ferramenta muito importante para pesquisas em biologia do desenvolvimento. Estudos prévios em nosso laboratório identificaram três fenótipos gestacionais de clones bovinos produzidos por SCNT: (1) gestação normal (CNG) - presença do embrião (EP), vesícula embrionária (VE) e corpo lúteo ativo (CL); (2) gestação anembrionada (CAG) - presença da VE e CL ativo e ausência de EP; (3) receptoras com CL ativo persistente sem a presença de EP e VE (CPCL). Vacas doadoras de embriões foram sincronizadas pelo protocolo de super-ovulação (SOV) e inseminadas artificialmente, os embriões obtidos após sete dias da ovulação foram transferidos para receptoras que ao ficarem gestantes formaram o grupo controle (GC). O objetivou do estudo foi investigar as características morfovasculares do útero nestes quatro fenótipos gestacionais. A hipótese central foi que as características morfovasculares do útero são moduladas diferentemente nos três fenótipos gestacionais de embriões clonados por SCNT e gestação controle. Vacas Nelores foram sincronizadas e utilizadas como receptoras de embriões. Coletas de sangue para análise de progesterona e exames ultrassonográficos nos modos B e Doppler para análise da morfologia e vascularização uterina foram realizados a cada dois dias a partir do dia 6 até o dia 30 pós-ovulação. Entre os dias 31 e 36, as receptoras foram abatidas e o útero coletado para análises in situ. A simetria entre cornos, o grau de desenvolvimento de carúnculas e da VE foram mensurados e amostras endometriais coletadas para quantificação relativa do fator de crescimento endotelial vascular (VEGF) e seu receptor do tipo 2 (VEGF-R2) por western-blotting. No total foram realizadas 212 sincronizações do ciclo estral, das quais 79 receptoras receberam embriões de clones por SCNT e 49 receberam embriões produzidos in vivo. Aos 25 dias pós-ovulação as taxas de concepção por grupo foram: CNG = 15,1% (12/79), CAG = 2,5% (2/79), CPCL = 8,8% (7/79) e CG = 24,4% (10/49). Duas receptoras da raça Tabapuã (Bos taurus indicus) do fenótipo do grupo CAG provindas de outro experimento foram incluídas nas análises. Algumas receptoras foram excluídas do experimento devido a perdas gestacionais ocorridas antes do momento do abate, restando para as análises sete receptoras no grupo CNG, três no CAG, quatro no CPCL e nove no CG. Somente o grupo CG apresentou diferença de perfusão vascular entre os cornos uterinos ipso e contralateral (P<0,05). Em relação ao corno ipsolateral, os grupos CG e CNG apresentaram maior perfusão vascular em relação ao grupo CPCL do dia 24 ao 30 (P<0,05). Porém, com a média dos escores da perfusão vascular endometrial de ambos os cornos, o grupo CNG apresentou maiores valores em relação aos grupos CAG e CPCL nos dias 24 e 30. Os índices de resistência vascular (RI) nas artérias uterinas confirmaram os dados subjetivos de diferença de perfusão vascular entre cornos, o corno ipsolateral do grupo CG apresentou menor RI em relação ao contralateral nos dias 22, 24, 28 e 30 (P<0,05) e os grupos CNG e CPCL não apresentaram diferença entre cornos (P>0,05). Entre os grupos, o RI no CG e CAG foi menor que no CPCL no dia 30 (P<0,05). A concentração de progesterona (P4) sanguínea foi menor no grupo CPCL em relação aos grupos CG e CNG nos dias 18 e 26 (P<0,05). A P4 atingiu valores próximos de 8 ng/ml a partir do dia 22 nos grupos CG e CNG, sendo que no grupo CPCL os valores foram inferiores à 6 ng/ml a partir do dia 14. As análises in situ revelaram maior frequência de assimetria de cornos uterinos no grupo CG em relação aos grupos CNG, CAG e CPCL; o grupo CNG obteve maior frequência de ocorrência de carúnculas e VE desenvolvidas nos dois cornos uterinos em relação aos grupos CAG e CPCL (P<0,05), não diferindo do grupo CG (P>0,05). O comprimento dos embriões do grupo CNG foi maior que dos embriões do grupo CG (P<0,05), entre os dias 28 e 34. Não foi detectada diferença de abundância relativa das proteínas VEGF e VEGF-R2 entre os quatro grupos estudados, porém quando os grupos de gestações normais (CG e CNG) foram comparados com os grupos de gestações alteradas (CAG e CPCL) foi detectada maior abundância relativa para o fragmento de 75 kDa da proteína do VEGF-R2 no grupo de gestações alteradas. A hipótese central do estudo, que afirma que as alterações morfovasculares do útero gestante durante o primeiro mês são moduladas em diferentes graus de forma dependente à qualidade de desenvolvimento do concepto foi confirmada. Por fim, este estudo proporcionou um melhor entendimento da fisiologia endócrina, morfológica e vascular das gestações normais e alteradas de embriões clonados por SCNT durante o primeiro mês gestacional, fornecendo base para novos estudos sobre o desenvolvimento e manutenção da gestação inicial em bovinos. / Cloning by nuclear transfer of somatic cells (SCNT) in cattle is an inefficient biotechnique. However, it is a very important tool for research in developmental biology. Previous studies from our lab have identified three gestational phenotypes of bovine clones: (1) Clone normal gestation (CNG) - presence of embryo (EP = embryo proper), embryonic vesicle (EV) and corpus luteum (CL); (2) Clone anembryonic gestation (CAG) - presence of EV and CL and no EP; (3) Recipient presenting only a persistent CL (CPCL). Embryo donor cows were synchronized by superovulation protocol (SOV) and artificially inseminated, embryos obtained after seven days of ovulation were transferred to the control group (CG). This study aimed to investigate whether modulation of the morphological and vascular abnormalities of the uterus by the presence of the cloned conceptus is different between the three gestational clone phenotypes and control. The central hypothesis was that the morphovascular characteristics of the uterus are modulated differently in the three gestational phenotypes of embryos cloned by SCNT and control gestation. Nellore cows were synchronized and used as embryo recipients. Blood collections for progesterone analysis and ultrasound examinations in B and Doppler modes for analysis of uterine morphology and vascularization were performed every two days from day 6 to day 30. Between 31-36 days, the recipients were slaughtered and the uteri were collected for in situ analyzes. The symmetry between horns, the degree of caruncle and EV development were measured and endometrial samples were collected for relative quantification of vascular endothelial growth factor (VEGF) and its receptor type 2 (VEGF-R2) by western blotting. A total of 212 estrous cycle synchronizations were performed, 79 recipients cows received clone embryos by SCNT and 49 embryos produced in vivo. At 25 days after ovulation the conception rates by group were: CNG = 15.1% (12/79), CAG = 2.5% (2/79), CPCL = 8.8% (7/79), and CG = 24.4% (10/49). Two pregnant cows Tabapuã (Bos taurus indicus) of CAG phenotype from another experiment were included in the analyzes. Some recipients were excluded from the experiment due to gestational losses occurring before the time of slaughter, remaining seven recipients in CNG group, three in CAG, four in CPCL and nine in CG. Only the CG group had a difference in vascular perfusion between the ipso and contralateral uterine horns (P<0.05). In relation to the ipsilateral horn, the CG and CNG groups presented higher vascular perfusion compared to the CPCL group from day 24 to 30 (P<0.05). However, with the average of endometrial vascular perfusion scores of both uterine horns, the CNG group presented higher values in compared to the CAG and CPCL groups on days 24 and 30. The vascular resistance index (RI) of the uterine arteries confirmed the subjective data of vascular perfusion between horns. The ipsilateral horn of the CG group presented lower RI in compared to the contralateral on days 22, 24, 28 and 30 (P<0, 05) and the CNG and CPCL groups did not show this difference between horns (P>0.05). Among groups, the RI in CG and CAG was lower than in the CPCL on day 30 (P<0.05). The blood progesterone (P4) concentration was lower in the CPCL group than in the CG and CNG groups on days 18 and 26 (P<0.05). P4 reached values close to 8 ng/ml after day 22 in the CG and CNG groups, and in the CPCL group the values were lower than 6 ng/ml after day 14. In situ analyzes revealed a higher frequency of uterine horn asymmetry in the CG group compared to the CNG, CAG and CPCL groups; the CNG group had a higher frequency of caruncles and EV development in the two uterine horns compared to the CAG and CPCL groups (P<0.05), not differing from the CG group (P>0.05). The length of the embryos of the CNG group was higher than that of the embryos of the CG group (P<0.05) between days 28 to 34. No difference was detected in the relative abundance of VEGF and VEGF-R2 proteins among the four groups, but when the normal gestation groups (CG and CNG) were compared with the altered pregnancies groups (CAG and CPCL) a greater relative abundance was detected for the 75 kDa fragment of the VEGF-R2 protein in the group of altered pregnancies. The central hypothesis of the study, which states that the morphovascular changes of the pregnant uterus during the first month are modulated in different degrees depending on the quality of development of the concept was confirmed. Finally, this study provided a better understanding of the endocrine, morphological and vascular physiology of normal and altered embryos of cloning by SCNT during the first gestational month, providing a basis for new studies on the development and maintenance of initial gestation in cattle.
73

Myslet z psychedelické zkušenosti - transdisciplinární interpretace / To thin from psychedelic experiences - a transdisciplinary interpretation

Pokorný, Vít January 2016 (has links)
Pokorný, V., To think from psychedelic experiences. Transdisciplinary interpretation. Diseration Thesis, Departement of General Anthropology, Faculty of Humanities, Charles University Prague, 2016 Abstract: The goal of this text is to think from and according to psychedelic experiences. To think from psychededic experiences means to introduce a transdisciplinary model of psychedelic domain. This model is based on autoethnographic, cognitive, phenomenological and psychopharmacological types of analysis. These analyses allow to demonstrate: 1) place of psychedelics in contemporary globalised czech society; 2) possible heuristic (theoretical and experiemental) value of psychedelic experience for understanding human situation. This text interprets psychedelic experience as a process of deteritorialization and reteritorialization that occurs on different, intertwinned levels of our experience, and, thus, it is a contribution to explication of a philosophical concept of intertwinning. Keywords: psychedelic experience, transdisciplinarity, autoethnography, cognitive anthropology, anthropology of experience, enactivism, phenomenology, embodiment, analogy, intertwinning
74

“Tänk, om fruarna började slå sina män!” : Om hur nyhetsartiklar återspeglar samhällets föreställningar och orsaksförklaringar till mäns våld mot kvinnor i nära relation / What if, the wives started to abuse their husbands! : How news articles reflect society's conception and causal explanations for men's violence against women in close relationships

Christensen, Elin, Westholm, Anna January 2022 (has links)
This thesis has been carried out as there has been a need to expand research in men's violence against women in close relationships. This by a historical comparison to discover causal explanation and conceptions with a focus on change and continuity over time. Men's violence against women needs more research, although new interventions such as laws have been put into place, the problem still remains in society. The thesis will focus on finding change and continuity over time. Analyzing the area through a historical perspective can further contribute to a greater insight into the problem today, to reduce the risk of repetition of the past, regarding conceptions on gender and violence and not make the problem invisible. The material that has been used in the thesis is based on news articles from Dagens Nyheter and Svenska Dagbladet, based on four selected time periods during the 1900–2020s. The analysis focus on the public's perceptions and causal explanations of men's violence against women in close relationships. The result of the analysis concluded, among other things, that research and news articles do not always correspond and that society's perceptions and causal explanations have both altered and continued. A finding  in the thesis is that jealousy and men's feelings are two relatively unexplored areas.
75

The Toronto blessing: an expression Christian spirituality in the charismatic movement

Pretorius, Stephanus Petrus 31 December 2002 (has links)
Christian Spirituality, Church History and Missiology / D. Th (Christian Spirituality, Church History and Missiology)
76

Myslet z psychedelické zkušenosti - transdisciplinární interpretace / To thin from psychedelic experiences - a transdisciplinary interpretation

Pokorný, Vít January 2016 (has links)
Pokorný, V., To think from psychedelic experiences. Transdisciplinary interpretation. Diseration Thesis, Departement of General Anthropology, Faculty of Humanities, Charles University Prague, 2016 Abstract: The goal of this text is to think from and according to psychedelic experiences. To think from psychededic experiences means to introduce a transdisciplinary model of psychedelic domain. This model is based on autoethnographic, cognitive, phenomenological and psychopharmacological types of analysis. These analyses allow to demonstrate: 1) place of psychedelics in contemporary globalised czech society; 2) possible heuristic (theoretical and experiemental) value of psychedelic experience for understanding human situation. This text interprets psychedelic experience as a process of deteritorialization and reteritorialization that occurs on different, intertwinned levels of our experience, and, thus, it is a contribution to explication of a philosophical concept of intertwinning. Keywords: psychedelic experience, transdisciplinarity, autoethnography, cognitive anthropology, anthropology of experience, enactivism, phenomenology, embodiment, analogy, intertwinning
77

Visual Storybooks: Connecting the Lives of Students to Core Knowledge

Proud, Keven Dell 14 December 2012 (has links) (PDF)
In order to help students find connections to the Core Knowledge curriculum and the principles of Discipline-Based Art Education, the author uses narrative and visual storytelling in the form of altered books to make meaning and relate the lives of students to the art content. The author uses methods of action research to plan a curriculum intervention, work with the students to create their visual stories, reflect on his instruction along with student learning, and collect students' responses through surveys. The author also gathers data through the students' journals and artworks. Through the project the author is able to give students choices and help them turn their learning environment into art practice. Ultimately, the author improves and develops his teaching practice as a result of this project.
78

[pt] EXPERIÊNCIAS SUBJETIVAS DE USUÁRIOS DE SUBSTÂNCIAS PSICODÉLICAS CLÁSSICAS / [en] SUBJECTIVE EXPERIENCES OF CLASSIC PSYCHEDELIC SUBSTANCES USERS

BHEATRIX BIENEMANN FAVERO 02 June 2022 (has links)
[pt] As substâncias psicodélicas clássicas são agonistas serotoninérgicos que atuam essencialmente no sistema de neurotransmissão 5HT2A. Essas substâncias podem promover estados alterados de consciência, bem como alterações visuais, afetivas, de humor e alterações cognitivas. Historicamente, eles têm sido usados para fins ritualísticos, recreativos e medicinais. Estudos indicam que essas substâncias apresentam baixa toxicidade, baixo risco de dependência e overdose. Existe um interesse científico atual no uso dessas substâncias como tratamento para uma variedade de condições e, embora muitos estudos busquem investigar objetivamente os resultados vinculados ao seu uso, os conteúdos subjetivos da experiência dos usuários ainda são pouco explorados. Considerando que a perspectiva de primeira pessoa é central para a experiência psicodélica, esta tese buscou investigar experiências subjetivas ligadas a psicodélicos por meio de uma variedade de abordagens. Primeiramente, buscou-se adaptar e validar o Ego Dissolution Inventory (EDI), instrumento amplamente utilizado por pesquisadores para avaliar um fenômeno essencial da experiência psicodélica, para o contexto brasileiro (Artigo 1). Em seguida, buscou-se explorar relatos públicos negativos (Artigo 2) e positivos (Artigo 3) de usuários de psilocibina (princípio ativo dos cogumelos mágicos), por meio do método Reinert, que analisa quantitativamente as falas transcritas. Por fim, discutiu-se a possível influência dos estados alterados de consciência (ASC), incluindo aqueles relacionados ao uso de substâncias psicoativas, na evolução humana (Artigo 4), sugerindo futuras pesquisas para explorar essa hipótese. / [en] Classical psychedelic substances are serotonergic agonists that act essentially on the 5HT2A neurotransmission system. These substances can promote altered states of consciousness, as well as visual, affective, mood, and cognitive changes. Historically, they have been used for ritualistic, recreational, and medicinal purposes. Studies indicate that these substances have low toxicity, low risk of dependence and overdose. There is current scientific interest in the use of these substances as a treatment for a variety of conditions, and while many studies seek to objectively investigate outcomes linked to their use, the subjective contents of the experience of users is seldom explored. Since a first-person perspective is central to the psychedelic experience, this thesis sought to investigate subjective experiences linked to psychedelics through a variety of approaches. First, we sought to adapt and validate the Ego Dissolution Inventory (EDI), an instrument widely used by researchers to assess a central feature of the psychedelic experience, to the Brazilian context (Article 1). Then, we sought to explore public negative (Article 2) and positive (Article 3) reports of psilocybin (the active principle of magic mushrooms) users, through the Reinert method, which quantitatively analyses transcribed speeches. Finally, the possible influence of altered states of consciousness (ASC), including those linked to use of psychoactive substances, in human evolution was discussed (Article 4), suggesting future research to explore this hypothesis.
79

Regulation of T Cell Activation by the CD5 Co-Receptor and Altered Peptides, Characterization of Thymidine Kinase-Specific Antibodies, and Integrating Genomics Education in Society

Whitley, Kiara Vaden 10 August 2022 (has links)
Helper T cells (Th) are a vital component of the immune system responsible for directing other immune cells to eliminate pathogens and cancer. Specifically, Th cells facilitate B cell and cytotoxic T cell (Tc) activation and recruitment and enhance their function against cancer and infectious diseases. Th cells are a valuable resource for improving Tc responses in cancer treatment and have become a focus of immunotherapeutic research. While it is increasingly clear that helper T cells serve an important role, the details about which entities produce an effective Th cell response remain unclear. CD5 is a T cell co-receptor that negatively regulates T cell activation and helps fine-tune the TCR repertoire by altering TCR signaling during the selection process in the thymus. This work discusses the role of the co-receptor CD5 in influencing Th cell metabolism, as well as the study of two T cells called LLO118 and LLO56 that have different CD5 expression levels, and their functional response to altered peptides. Antibodies have revolutionized the world of cancer research and accelerated the development of therapies that trigger the immune system to target disease. In recent years, many antibody-based immunotherapies have emerged as effective candidates for combating cancer due to their refined specificity and ability to target a variety of epitopes. However, many therapies, such as those that target CD19 on B cell cancers, are also present on healthy cells, destroying both cancerous and healthy cells alike. Thymidine kinase 1 (TK1) is an enzyme involved in the DNA salvage pathway that converts thymidine into the nucleotide thymine. Recently, TK1 has been shown to be overexpressed on the surface of many cancers such as acute lymphoblastic leukemia. Importantly, TK1 is not expressed on the surface of healthy cells, making it an ideal cancer-specific antigen that can be targeted for cancer treatment. This work discusses our efforts to characterize TK1-specific single-chain antibodies from a yeast display library. According to the World Health Organization, genomics is defined as the study of all genes and their related functions. In contrast to genetics, genomics analyzes the entire DNA makeup of an organism rather than a single gene. In the past 20 years, the cost of genomic sequencing has decreased dramatically, making it affordable and accessible. A key area that must be addressed with genomic testing involves education about their promise, challenges, potential consequences, and ethical considerations. Genomic testing provides a powerful opportunity to educate everyone on scientific and ethical issues to increase understanding on the subject. This work discusses the influence of personal genomics in society and focuses on the importance, benefits, and consequences of genomics education in the classroom, clinic, and the public.
80

Cellular Mechanisms of Gravitropism in ARG1 (Altered Response to Gravity) Mutants of <i>Arabidopsis Thaliana</i>

Kumar, Neela Shiva 12 August 2008 (has links)
No description available.

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