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1
He, Xiao Wei. "Development of algorithms and software for the LASCA techniques for monitoring flow and velocity." Thesis, Kingston University, 1999. http://eprints.kingston.ac.uk/20629/.
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Laser speckle is an interference effect, which can be observed either in free space or on the image plane of a diffuse object illuminated by coherent laser light. The possibility of using the spatial statistics of time-integrated laser speckle pattern for monitoring capillary blood flow in quasi real-time has been demonstrated recently. However, there are still several important unresolved issues. First, the validity of the fundamental laser speckle statistical techniques used still requires verification. Second, the existing algorithms and software need to be re-examined and improved for achieving a real-time solution and new algorithms and software need to be introduced with a higher statistical accuracy and higher spatial resolution. Finally, a comprehensive theory and model(s) are needed to guide any further development. This thesis begins by studying the laser and laser speckle concepts and principles. Then the original laser speckle contrast analysis (LASCA) model and algorithms have been evaluated and re-examined. A real-time solution has been presented by using improved computational algorithms. The study of LASCA theory starts by exploring the biomedical structure of skin and tissue optics. A more comprehensive LASCA theory has then been established, with which three new LASCA computational models have been developed, based on temporal speckle statistics, spatial speckle statistics and temporal-spatial speckle statistics, respectively. To obtain a real-time solution, a class of highly efficient algorithms has been designed and developed, based on the three new computational models. To implement these algorithms, the LASCA foundation classes library and its application software have been developed accordingly, with the characteristics of portability, reusability, and modularity. To build up an optimised LASCA system, the LASCA related experimental parameters have also been analysed and discussed in detail and solutions have been proposed. As a result, the enhanced LASCA theory, LASCA system design techniques, LASCA related algorithms and software should become valuable tools in' guiding and assisting a more extensive study on the LASCA techniques.
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Matlala, Montsho. "Laca displays its art." The New Age, 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000338.
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Arroyo, Pamela, and Nahuel Ferreyra. "Producción de laca poliuretánica." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Aplicadas a la Industria, 2016. http://bdigital.uncu.edu.ar/8147.
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El presente trabajo contiene el análisis y la evaluación técnica y económica de la fabricación de Laca de Base Poliuretánica a nivel industrial. El estudio realizado alcanza el nivel de prefactibilidad
En nuestro país pocos se encargan de producir poliuretanos y las empresas prefieren dedicarse a producir catalizadas, nitrocelulosas o compuestos parecidos ya que es mucho más rentable en un país cuya industria del mueble tiene un carácter más independiente y artesanal.
No hay duda de que las ventajas que ofrece el poliuretano superan ampliamente a otras del mercado que ofrecen un servicio similar. De hecho, las ventajas en resistencia a la abrasión y al rayado le permiten ser usado en pisos de polideportivos, sin necesidad de encerar o sin que se quiebre por tráfico pesado.
El estudio de mercado permite inferir que el suministro de los insumos necesarios para la producción estaría garantizado.Fil: Arroyo, Pamela. Universidad Nacional de Cuyo. Facultad de Ciencias Aplicadas a la Industria.
Fil: Ferreyra, Nahuel . Universidad Nacional de Cuyo. Facultad de Ciencias Aplicadas a la Industria.
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Lindström, Hanna, and Johnny Norberg. "Lasta om, lasta rätt-En upprepad tvärsnittsanalys av hur samordnaddistribution påverkat antalet budgivare inom offentlig livsmedelsupphandling." Thesis, Umeå universitet, Nationalekonomi, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-71445.
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Baillet, Nicolas. "Pathologie comparée de la fièvre de Lassa chez le singe cynomolgus : mécanismes pathogéniques précoces, réponses immunitaires et marqueurs d’infection." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1307.
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Le virus Lassa entraine une fièvre hémorragique endémique en Afrique de l’Ouest et représente un problème de santé publique. Les connaissances sur la pathogénèse et les réponses immunitaires associées à la maladie sont partielles. Nous avons suivi les paramètres pathologiques, virologiques et immunologiques associés aux infections létales et non létales du LASV chez le singe cynomolgus. Le tableau clinique a été caractérisé par une dépression, une anorexie, une perte de poids et une asthénie chez les animaux survivants, tandis que ces mêmes symptômes ont été accompagnés de fièvre, de difficultés respiratoires et d’épistaxis chez les animaux infectés par une dose létale. Seuls ces derniers ont montré une perturbation des paramètres de coagulation, une rhabdomyolyse et une hausse des marqueurs de lésions rénales. Nous avons observé un tropisme radicalement différent en fonction de la sévérité de la maladie, avec une dissémination virale dans les organes plus importante et plus rapide chez les animaux décédés, la présence de particules infectieuses plus nombreuses et des modifications anatomopathologiques plus sévères. Une réponse immunitaire innée et adaptative précoce et puissante a été associée avec le contrôle de l’infection et la survie tandis que les infections fatales ont été caractérisées par une réponse inflammatoire ressemblant au choc septique, une défaillance de la réponse immunitaire ainsi qu’une réplication virale incontrôlée. Cette étude permet d’améliorer nos connaissances de la pathogénèse de la fièvre de Lassa et d’apporter des marqueurs d’infection prédictifs de la maladieLassa virus causes a hemorrhagic fever endemic in West Africa and represents a threat for civilians. The pathogenesis and the immune responses associated with the disease are poorly understood. We followed pathological, virological and immunological parameters associated with fatal and non-fatal Lassa virus infection in the cynomolgus monkey. The clinical picture was characterized by depression, anorexia, weight loss and asthenia in survivors whereas the same symptoms were supported by fever, respiratory difficulties and epistaxis in animals infected with the lethal dose. Only fatalities have shown coagulation parameters dysfunction, rhabdomyolysis and an increase of renal function markers. We observed a different viral tropism in a function of the disease severity, with viral dissemination in organs that was more important and faster in fatalities, the appearance of numerous infectious particles number and more severe pathologic changes. Early and robust innate and adaptive immune response has been associated with the control of infection and recovery whereas fatal infections were characterized by a sepsis like inflammatory response, defective immune response as well as uncontrolled viral replication. This study sheds light on the pathogenesis of Lassa fever and reveals infection markers predictive of the disease outcome
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Lemos, Justine Alexia. "Bracketing lasya an ethnographic study of Mohiniyattam dance /." Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?index=22&did=1874931051&SrchMode=1&sid=1&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1270076813&clientId=48051.
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Thesis (Ph. D.)--University of California, Riverside, 2009.Includes abstract. Accompanying CD-ROM includes Mohiniyattam practicing and performance. Includes bibliographical references (leaves 418-464). Issued in print and online. Available via ProQuest Digital Dissertations.
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Wilkinson, Ann. "The process and practice of diagnosis : innovations in diagnostics for Lassa fever in Sierra Leone." Thesis, University of Sussex, 2013. http://sro.sussex.ac.uk/id/eprint/47209/.
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This thesis is about the process and practice of diagnosis and the implications of new diagnostic technologies in low resource settings. As a setting and a disease which has seen significant investment in diagnostics, Lassa fever in Sierra Leone has been selected as a case study to examine these themes. In this thesis, 'new diagnostic technologies' refers to laboratory-based diagnostics which are fast, reliable, accurate and can be used in low income settings. The starting point of this thesis is a narrative surrounding such technologies which suggests that they will revolutionise low income healthcare settings by allowing accurate scientific diagnosis in places where it was not possible before. Various perspectives on diagnosis are examined and some limitations are identified in relation to their accounts of diagnostic process, context, practice and technology. To explore the case, aspects of science and technology studies, the sociology of scientific knowledge and medical anthropology are combined. A multi-sited ethnography of Lassa fever diagnosis was conducted in three settings: a rural village, a laboratory and the wards of a hospital. Documents were reviewed and interviews conducted with key actors and ex-Lassa fever patients. Analysis focused on framings (partial and subjective interpretations), narratives (persuasive storylines which make use of particular framings) and practice in relation to Lassa fever and the development of technology for its diagnosis. Assumptions about the disease, diagnostics and the process of diagnosis are identified and the conclusion considers how they compare with practice in each setting. This thesis argues that diagnosis is a complex negotiated process and that new diagnostics represent only one aspect of that process. Thus, they are not a ‘silver bullet' to transform low resource healthcare contexts. In particular, ‘improved' diagnostics do not always have the expected impacts, sometimes even introducing complexity and uncertainty. In challenging narratives about diagnostics, this thesis provides an alternative, practice-based, approach to thinking about diagnostics and innovations in health systems; this approach acknowledges the importance, and complexity, of the diverse contexts which shape innovations and technology use.
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Matthews, Stephen John. "Volcanology, petrology and geochemistry of Lascar Volcano, northern Chile." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.283332.
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Oikarinen, M. (Milla). "”Kunnioittakaamme lasta”:lastenkasvatus Kotiliesi-lehden valossa vuosina 1923–1963." Master's thesis, University of Oulu, 2014. http://urn.fi/URN:NBN:fi:oulu-201409111856.
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Pro gradu -tutkimukseni ”Kunnioittakaamme lasta”. Lastenkasvatus Kotiliesi-lehden valossa vuosina 1923–1963, tarkoituksena on ollut valottaa lasten kasvatukseen liittyviä teemoja yhden aikansa merkittävimmän naistenlehden näkökulmasta. Olen käyttänyt lähteenäni suomalaisen Kotiliesi-lehden vuosikertoja vuoden 1923 tammikuusta, vuoden 1963 kesäkuun loppuun. Aikarajaukseni perustana on Alli Wiherheimon neljäkymmentä vuotta kestänyt ura lehden päätoimittajana. Kotilieden tavoitteena oli tarjota neuvoja perheenäidin tehtäviin, kuten lastenkasvatukseen liittyen, ja kohottaa kodissa tehty työ arvoiselleen paikalle yhteiskunnassa. Olen käyttänyt tutkimuksessani kvalitatiivista metodia. Olen pyrkinyt ymmärtämään tutkimaani ilmiötä aineistolähtöisesti, eli niiden ajatusten kautta, joita Kotiliedessä kasvatuksesta esitettiin. Olen antanut tilaa myös Kotiliedessä kirjoittaneille, ja nostanut heidän ajatuksiin ja kokemuksiaan esille.
Tärkein tutkimuskysymykseni on ollut se, miten käsitys lasten kasvattamisesta ja siinä käytetyistä keinoista on muuttunut. Olen tarkastellut sitä, millaisena persoonana lapsi nähtiin ja miten häneen suhtauduttiin, sekä miten lapsen fyysiseen ja psyykkiseen kehitykseen yritettiin kasvatuksella vaikuttaa. Olen myös verrannut Kotiliedessä esiintyneitä kasvatusihanteita yleiseen vallalla olleeseen kasvatusihanteeseen. Näitä kysymyksiä olen tarkastellut lapsen kolmen elinpiirin näkökulmasta, jotka ovat nousseet esiin Kotiliedessä. Tärkein lapsen elinympäristö oli koti, toinen koulu, joka edustaa tutkimuksessani myös yhteiskuntaa yleensä, ja kolmas lapsen vapaa-aika ja harrastukset. Tärkein uutuus tutkimuksessani on se, että olen sitonut lasten kasvattamisessa tapahtuneet muutokset historialliseen kontekstiinsa. Olen tuonut esille, että taloudellisilla, poliittisilla ja kulttuurisilla muutoksilla on ollut vaikutuksensa myös lasten elämään. Olen käsitellyt kokonaisvaltaisesti kaikkia lapsen elämän osa-alueita kasvatuksen näkökulmasta.
Lehdestä saamani kasvatusta käsittelevän aineiston perusteella olen pystynyt hahmottamaan kolme toisistaan erottuvaa ajanjaksoa. Ensimmäinen näistä oli 1920- ja 1930-lukujen kehollisuutta ja etupäässä fyysisestä terveyttä ihannoiva ajanjakso. Ihannelapsi oli vanhempiaan kunnioittava, terve ja liikkuva lapsi. 1940-luvulla korostui työtä tekevän ihmisen ihanne. Vaikea ja köyhä aika vaati kodin töiden osaamista. Kasvatuksessa tuli keskittyä fyysisen hyvinvoinnin lisäksi myös lapsen henkisen hyvinvoinnin edistämiseen. Sodan seurauksena avioerot ja naisten työssäkäynti lisääntyivät. Kotiliedessä korostettiin 1950-luvulta lähtien läheisten perhesuhteiden merkitystä. Perhekasvatusta tuli antaa sekä kotona että koulussa, jotta lapsista kasvaisi hyviä tulevaisuuden äitejä ja isiä. Psykologia tarjosi apukeinon lapsen sielunelämän ymmärtämiseen ja oikeaan kasvattamiseen. Iloinen ja onnellinen lapsi oli osoitus onnistuneesta kasvatustyöstä.
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Fuhrmann, Didier. "Les fièvres hémorragiques africaines : les virus Lassa - Ebola - Marbourg." Strasbourg 1, 1988. http://www.theses.fr/1988STR15028.
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Park, Sukjoon. "Comparative analysis of Pseudomonas aeruginosa LasA and LasD /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487942476405085.
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Frade, José Carlos Patrício dos Santos. "A laca: identificação das origens e das técnicas." Doctoral thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/3708.
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Doutoramento em Engenharia Florestal e dos Recursos Naturais - Instituto Superior de AgronomiaEast Asian lacquers are the saps of the species Rhus vernicifera, Rhus succedanea and Melanorrhoea usitate, obtained through an incision in the trunk of the tree. Lacquers have been applied as protective and decorative coatings in the most varied kinds of objects, for thousands of years. Lacquered objects are rare and highly valued artefacts that evidence, in part, the cultural exchange between Europe and Asia, initiated with the Portuguese maritime expansion. This cultural exchange has promoted the emergence of new artistic styles, which combine many decorative influences that complicate the attribution of the provenance of many lacquered artefacts. As lacquer producing species are distributed by relatively well defined regions, the identification of the lacquer applied in a given object can contribute to the determination of its origin. In this work, Py-GC/MS methods that allow discriminating between the three types of oriental lacquers were developed, and the polymerization process of lacquers was characterized by μ-FTIR and Py-GC/MS. These methods allowed the identification of a tree from Tapada da Ajuda’s Botanical Park, through the analysis of its dried sap, as belonging to Rhus vernicifera species, as well as to study the origins and techniques of a set of luso-oriental objects of unknown origin, and two regions for the provenance of these artefacts were recognized
FCT
13
Jaffer, Aaron. "Lascar mutiny in the age of sail, c.1780-1860." Thesis, University of Warwick, 2013. http://wrap.warwick.ac.uk/57893/.
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This thesis examines the diverse body of seafarers known as ‘lascars’. Scholarship devoted to lascars who were employed during the age of sail has tended to focus on the minority who stayed and settled in Britain. Studying lascars as migrants can have the effect of obscuring the time they spent afloat and often risks casting them in the role of victims. Historians have failed to address fully the issue of how these men resisted the oppressive conditions of their employment whilst at sea. This thesis draws upon a wealth of unused source material – including logbooks, seafaring diaries and judicial records – to reconstruct lascar unrest aboard British merchantmen operating in the Indian Ocean between 1780 and 1860. It uncovers a wide range of hitherto overlooked forms of agency amongst lascars. These include everyday acts of collective protest such as demonstrations, refusals to work, assaults on officers and disorderly religious festivals. Such tactics enabled lascars to exert considerable influence aboard ship by venting anger, resisting unpopular orders and gaining concessions from their superiors. They also serve to broaden our understanding of what constitutes a ‘mutiny’ and how this could vary considerably between different cultural contexts. This thesis also examines more serious forms of mutiny, during which lascar crews killed commanders, commandeered vessels, expropriated cargoes and overturned established shipboard social relations. Uprisings of this nature occupy an important place in the long history of lascar employment and add significantly to our understanding of the Indian Ocean world. The last eight decades of East India Company rule witnessed a spate of such incidents, before European expansion and steam navigation rendered them unfeasible. The documents generated by this form of mutiny also provide one of the very few means of recapturing a lascar voice from the archives. Mutiny in all its forms thus offers an unparalleled window onto the working lives of these seafarers and the unique wooden world they inhabited.
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Jürgens, Henning P. "Johannes a Lasco in Ostfriesland : der Werdegang eines europäischen Reformators /." Tübingen : Mohr Siebeck, 2002. http://catalogue.bnf.fr/ark:/12148/cb38889468d.
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Nepomuceno, Tiago Costa. "Educação ambiental & espiritualidade laica: horizontes de um diálogo iniciático." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-01072015-101326/.
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O movimento ambientalista tem como um dos seus aspectos mais evidentes uma certa mística ou espiritualidade particular que tende a ser qualificada como \"ecológica\". Esta, por uma questão de filiação histórica, também se revela nos valores e pressupostos teóricos e práticos de algumas correntes da educação ambiental (EA), que na sua maior parte se constituíram no contexto anglosaxônico antes de se tornarem conhecidas em outros países. De maneira mais específica, contudo, no que tange ao campo da produção de conhecimento (meio acadêmico) da EA brasileira, enquanto temática central a dimensão da espiritualidade não tem merecido a mesma atenção que outras dimensões, como a política e a social. Esta tese, motivada pelo incômodo provocado por essa \"área de silêncio\", procurou refletir sobre o lugar da espiritualidade na educação ambiental, seus limites e possibilidades, fundamentando-se na problematização de três questões: (1) o conceito contemporâneo de espiritualidade; (2) o lugar da espiritualidade na educação; (3) a importância ancestral da natureza como fonte para a espiritualidade. Na primeira questão o objetivo foi: demarcar o significado que o termo espiritualidade tende a assumir atualmente, diferenciando-o de religião/religiosidade; discutir o conceito de espiritualidade laica ou imanente, conforme desenvolvido por alguns filósofos contemporâneos, e as noções de transcendência horizontal e imanência do sagrado, que sem negar a espiritualidade identificam-na como uma metadimensão da condição humana que pode ser cultivada a partir de perspectivas tanto seculares quanto místico-religiosas. Na segunda questão o objetivo foi: discutir um dos dilemas da educação moderna, que se vê pressionada entre o proselitismo religioso e o secularismo empobrecido, discutindo a possibilidade de uma educação do espírito que, através de valores laicos importantes para a coexistência e diálogo humano, reconheça a importância da busca (secular ou religiosa) pelo sagrado; apresentar os pressupostos da Educação Holística; discutir a importância da relação mestre-aprendiz em todo processo educativo e em particular no contexto de uma educação do espírito. Na terceira questão o objetivo foi: problematizar a dicotomia que opõe natureza sacralizada/dessacralizada no mundo moderno; discutir a espiritualidade do movimento ambientalista e em particular da Ecologia Profunda; apresentar propostas de religiosidades planetárias laicas; problematizar as condições para que religiosidades ecológicas se estabeleçam no cenário contemporâneo. Finalmente, no quarto capítulo, a partir das fundamentações anteriores e numa inflexão mais autoral, buscou-se: (1) problematizar a \"ausência em termos\" da espiritualidade e do sagrado nas pesquisas em educação ambiental no Brasil, considerando como hipóteses explicativas (a) a indiferença do meio acadêmico ao campo da espiritualidade, em parte por esta ainda ser associada às religiões organizadas e práticas neo-esotéricas no estilo Nova Era, e (b) à crescente influência da macrotendência crítica da EA, que ao enfatizar corretamente a importância das dimensões político-social para a práxis do campo, tendem a desconsiderar outras dimensões e em particular a da espiritualidade/sagrado, que por sua vez é relevante entre as correntes consideradas conservadoras; (2) sugerir alguns pontos fundamentais de convergência entre a noção de espiritualidade laica e as questões e temas da educação ambiental, elaborando-os a fim de discutir a vocação espiritual da EA e seu potencial \"iniciático\", na medida em que é capaz de desvelar elementos para uma transcendência imanente. Como conclusão, é discutida a relevância de uma educação ambiental que também valorize a dimensão espiritual no atual contexto de crescentes incertezas desse mundo reduzido que parece se tornar a marca do Antropoceno.The environmental movement has as one of its most evident facets a certain mystique or particular spirituality which usually tends to be characterised as \"green\". Thus, as matter of historical association, this distinctive feature is also present in the standards as well as in the theoretical and practical assumptions of some current environmental education (EE) practices, which firstly shaped the Anglo-Saxon context before becoming known in other countries. More specifically, however, with respect to the academic mileu of the Brazilian EE, as a central theme the dimension of spirituality has not received the same attention as other dimensions, such as the political and the social. Motivated by this fact this thesis sought to examine the place of spirituality in environmental education, including its limits and possibilities. To achieve this aim, this thesis is supported by three guiding objectives as follows: (1) the contemporary concept of spirituality; (2) the place of spirituality in education; (3) the ancestral importance of nature as a source for spirituality. In the first objective the aim was to determine the current meaning carried by the term spirituality, focusing on differentiating it from religion and/or religiosity; this is followed by the introduction and discussion of the concept of secular or immanent spirituality as developed by some contemporary philosophers, as well as the horizontal transcendence and sacred immanence, wich without denying the role of spirituality identify it as a meta-dimension of the human condition that can be grown from both secular and mystical-religious perspectives. The second objective sought to discuss one of the dilemmas present in contemporary education, embodied by the contrast between religious proselytism and the impoverished secularism. This section also argues for the possibility of an education of the spirit which, through important secular values for coexistence and human dialogue, recognises the relevance of the individual search of both the secular or religious sacred practices. Within the second objective, this thesis then explores the assumptions of the Holistic Education examining the importance of the master-disciple relationship in any educational process, and in the context of an education of the spirit in particular. The aim of the third objective was to shed light on the dichotomy which opposes sacralised/desecrated facets of the nature in the contemporary world. The third objective also aims to discuss the spirituality of the environmental movement and of the Deep Ecology in particular; to examine current proposals of a secular planetary religiosity; and to further explore the conditions enabling ecological religiosities to be established in the contemporary society. Lastly, in the fourth chapter draws from the earlier theoretical foundations focusing on a more authorial inflection in order to: (1) discuss the \"absence in terms\" of spirituality and the sacred in research in environmental education in Brazil, considering as explanatory hypotheses (a) the indifference from academia to the field of spirituality, partly explained by the latter being often associated with organized religions and neo-esoteric practices commonly known as New Age, and (b) the growing influence of the EE macro-critical tendency, which properly emphasizes the importance of the political and social dimensions in the everyday practice but tend to ignore other dimensions, in particular the spiritual/sacred, which in turn is relevant among the conservative camps; (2) suggest fundamental points of convergence between the notion of lay spirituality and the issues and themes directly related to environmental education, focussing on the discussion of the EE spiritual vocation and its initiatory potential, in that it is able to reveal elements to an immanent transcendence. In conclusion, we discuss the importance of an environmental education that also values the spiritual dimension in the current context of increasing uncertainty which is part of the current dwindling social practices that seems to become the hallmark of the Anthropocene.
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Kielinen, P. (Pauliina). "”Farmariauto ja kaksi lasta”:suomalaisten korkeakoulutettujen nuorten aikuisten näkemyksiä lastenhankinnasta." Master's thesis, University of Oulu, 2018. http://urn.fi/URN:NBN:fi:oulu-201804071450.
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Viime vuosina suomalaisten syntyvyys on vähentynyt. Yhä useammin lastenhankinta on siirtynyt lähemmäs 30 ikävuotta tai sen yli. Samaan aikaan myös vapaaehtoisesti lapsettomien määrä on kasvanut. Suomalaisten yleisimmäksi perhetyypiksi onkin muodostunut lapseton aviopari.
Tässä tutkielmassa ollaan kiinnostuneita suomalaisista korkeakoulutetuista nuorista aikuisista sekä heidän näkemyksistään. Tutkielman tarkoituksena on selvittää, millaisia näkemyksiä korkeakoulutetuilla nuorilla aikuisilla on lastenhankintaan liittyen. Tutkimusongelmaa lähestytään kysymällä, mitkä tekijät edistävät tai mahdollistavat nuorten aikuisten lastenhankinnan ja mitkä puolestaan siirtävät sitä.
Tutkielman teoreettinen viitekehys rakentuu perheen määrittelystä muuttuneessa yhteiskunnassa. Sen lisäksi tutkielmassa tarkastellaan nuorten aikuisten elämää pidentyneen nuoruuden näkökulmasta. Teoreettisessa viitekehyksessä määritellään myös lastenhankintaa käsitteellisessä mielessä sekä kerrotaan siinä tapahtuneista muutoksista.
Tutkielmassa aineistona toimii Väestöliitolta saadut vuoden 2017 Perhebarometrin fokusryhmähaastattelut. Perhebarometri-aineisto koostuu 12 haastattelusta, mutta pro gradu -tutkielmassa niistä käsitellään neljää, johon kuuluu kaksi korkeakoulutettua mies- ja naisryhmää. Tutkielma on laadullinen tutkimus, jossa aineistoa on analysoitu aineistolähtöisen sisällönanalyysin avulla.
Keskeisinä tuloksina tutkielmassa on, että suomalaisten korkeakoulutettujen nuorten aikuisten lastenhankinnan mahdollistavat useat erilaiset tekijät. Siihen vaikuttavat esimerkiksi sosiaaliset normit mutta myös sopiva ja vakaa elämäntilanne sekä lapsen näkeminen elämän täydentäjäksi. Puolestaan lastenhankintaa siirtävinä tekijöinä toimivat parisuhde tai sen puute, talouteen vaikuttavat tekijät, muut merkittävät asiat sekä negatiiviset mielikuvat lapsiperheen arjesta. Kaiken kaikkiaan tutkielman tulokset avaavat, millaisia näkemyksiä suomalaisilla korkeakoulutetuilla nuorilla aikuisilla on ja miten ne ilmenevät heidän teoissaan ja päätöksissään.
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Vachon, Thomas. "Christopher Lasch : de la critique du progrès au libéralisme tragique." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39658.
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Christopher Lasch (1932-1994) est un historien et un critique social américain connu pour ses
ouvrages portant sur la politique et la culture américaines au XXème siècle. Cette thèse cherche à
éclairer sa présentation de l’idée de progrès et de ses conséquences pour la polis américaine. Nous
interprétons la pensée de Lasch comme un « libéralisme tragique », en voulant signifier par-là que
l’historien américain voit une tension non résolue entre le libéralisme politique et l’idée de progrès.
Pour présenter ce constat, nous abordons tout d’abord la genèse de cette formulation critique de
l’idée de progrès en présentant une succincte biographie intellectuelle de Lasch. Nous examinons,
ensuite, l’histoire que Lasch fait de l’idée de progrès dans son maître ouvrage de 1991 intitulé, The
True and Only Heaven: Progress and Its Critics. Nous analysons enfin les conséquences sur la vie
politique et sociale des démocraties libérales contemporaines que Lasch analyse à la suite de ce
qu’il juge être l’expansion et le triomphe sans partage de l’idée de progrès dans nos sociétés. Ce
dernier point nous permettra d’illustrer en quoi la conception laschienne du libéralisme est, à notre
avis, tragique.
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Gabrielsson, Göran. ""Lasta och åk" : Akutbilens anestesisjuksköterskors uppfattningar om intubation vid traumatiska skallskador." Thesis, University of Gävle, Department of Caring Sciences and Sociology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-4904.
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Laska, Nadine [Verfasser]. "Lebensdauer und Oxidationsverhalten von Wärmedämmschicht-Systemen auf gamma-Titanaluminiden / Nadine Laska." München : Verlag Dr. Hut, 2014. http://d-nb.info/1047995069/34.
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Argonz, Raquel. "Purificação de rejeitos de lascas de quartzo das industrias de silicio." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264918.
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Orientador: Carlos K. SuzukiTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: O Brasil é na atualidade um dos principais produtores de silício para o mundo, sendo que a quantidade de quartzo extraído para a sua produção incluindo o ferro-silício, é da ordem de 2 milhões de toneladas/ano. Para a obtenção do quartzo destinado à redução carbotérmica em silício, nos diversos estágios de extração, britagem, seleção, transporte, e lavagem, cerca de 300.000 toneladas/ano de lascas de quartzo tomam-se rejeitos. Neste trabalho foi desenvolvida uma metodologia ambientalmente correta, denominada "quench-Ieaching" e "crush-leaching", que se utiliza da lixiviação aquosa para a purificação deste material. Os resultados mostram que ocorre uma remoção efetiva de impurezas majoritárias nas lascas de quartzo, tais como, AI, Fe, Na, K, Ca, Mn, ..., dando-lhe uma pureza de 99,9% de SI 'O IND 2'. Uma comparação com diversos insumos de quartzo produzidos no exterior para uso em tecnologia avançada, como para produção de sílica vítrea translucente e "fillers" de "micro-chips", revela que este material purificado com esta tecnologia toma-se de qualidade equivalente ao pó de quartzo internacional
Abstract: Nowadays, Brazil is one of the main silicon metal and iron-silicon producer in the world. But on the other hand, the amount of natural quartz that has been extracted for this purpose is up to 2 milliontons/year. The key-point is the large quantity of rejected quartz lascas, approximately 300,000 tons/year, generated during the various stages of extraction, crushing, selection, transportation, and washing. A new environrnentally mendly purification methodology denominated "quench-Ieaching" and "crush-leaching, that only uses aqueous leaching, has been developed. The result shows an effective elimination of major quartz impurities, such as Al, Fe, Na, K, Ca, Mn, ... , that transforms this rejected material into a 99.9% purity SI 'O IND 2'. The quality of this material is as high as the quartz powder commercially available in the intemational market for use as "fillers" and translucent silica glass raw material for semiconductor industries
Doutorado
Materiais e Processos de Fabricação
Doutor em Engenharia Mecânica
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Ferreira, Douglas Willian. "Ágape e liberdade: os fundamentos da espiritualidade laica de Luc Ferry." Universidade Federal de Juiz de Fora, 2016. https://repositorio.ufjf.br/jspui/handle/ufjf/1849.
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FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
Para Luc Ferry, a contemporaneidade se caracteriza fundamentalmente como a era do amor. Segundo o autor, a secularização e o processo de desconstrução acontecidos na Filosofia não legaram ao homem uma sociedade sem fundamentos, nem mesmo um pessimismo niilista. Ao contrário, o que se vê é uma divinização do humano através da valorização do outro como aquele que permite ao homem a saída de si, e, assim, a ultrapassar os limites subjetivistas ao expandir seu pensamento. Essa divinização é um resultado claro da valorização da liberdade, sendo essa a centelha divina no humano. Afinal, a liberdade é caracteristicamente o que descoloca o homem para além de todos os determinismos, permitindo, assim, o fazer-se a si mesmo. Nesse sentido, o que se vê é um rompimento, segundo o autor, com todas as formas tradicionais de pensamento e uma superação do religioso e suas seduções. O homem-Deus, é, portanto, o grande responsável por todo o processo de secularização: tanto da moral e do amor quanto da própria espiritualidade. Nesse contexto, torna-se visível uma espiritualidade, aparentemente laica, pautada no ágape secularizado, que se apresenta, antes de tudo, como uma espiritualidade cristã, porque não consegue se desvencilhar, em suas próprias bases, da influência do amor cristão.
For Luc Ferry the contemporaneity is characterized fundamentally as the era of love. According to the author, the secularization and the deconstruction process that happened in philosophy did not bequeath to man a society without foundations, not even a nihilistic pessimism. Instead, what is seem is a deification of the human being, through the appreciation of the other as the one who allows the man to come out of himself, and then, to exceed the subjective limits to expand his thoughts. This deification is a clear result of the appreciation of freedom, being this the divine spark in the human being. After all, freedom is characteristically what displaces man beyond all enabling determinisms to become himself then. In this way, what it is seen is a disruption, according to the author, to all the traditional ways of thinking and an overcoming of the religious and its seductions. The God-man is therefore the great accountable for the whole process of secularization: of both moral and love as well as of His own spirituality. In this context, it becomes visible a seemingly secular spirituality because, based on the secularized agape, it presents above all as a Christian spirituality, as it cannot disentangle itself from its own bases of influence of Christian love.
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Lewitzka, Steffen. "Contributions to the investigations of Lascar strong types in simple theories." Universidade Federal de Pernambuco, 2003. https://repositorio.ufpe.br/handle/123456789/1862.
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Previous issue date: 2003Lewitzka, Steffen; José Guerra Barreto de Queiroz, Ruy. Contributions to the investigations of Lascar strong types in simple theories. 2003. Tese (Doutorado). Programa de Pós-Graduação em Ciência da Computação, Universidade Federal de Pernambuco, Recife, 2003.
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Bastías, Sépulveda Ximena Marisol. "Ríos internacionales y la utilización de las aguas del Río Lauca." Tesis, Universidad de Chile, 2006. http://www.repositorio.uchile.cl/handle/2250/107787.
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Memoria (licenciado en ciencias jurídicas y sociales)En esta memoria desarrollaré aspectos del derecho internacional público que se aplican al uso del agua, principalmente agua dulce, ese recurso natural, escaso, limitado y de vital importancia para la sobrevivencia humana y desarrollo económico especialmente de aquellas zonas más desérticas
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Barber, G. N. "Expression of the Lassa virus nucleocapsid protein gene in prokaryotic and eukaryotic cells and application in diagnostic assay systems." Thesis, Open University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235258.
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Duvignaud, Alexandre. "Aspects cliniques, biologiques et pronostiques de la fièvre de Lassa en contexte endémo-épidémique en Afrique de l’Ouest : exemple du Nigeria." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0254.
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La fièvre de Lassa, maladie endémique à recrudescence épidémique saisonnière, est avec 300 000 cas et 5000 décès annuels estimés à travers toute l’Afrique de l’Ouest considérée comme une priorité en terme de recherche. Ces dernières années, le Nigeria a rapporté un nombre de cas annuel en constante augmentation, dépassant désormais le millier. Mais cinquante ans après sa découverte, les connaissances sur la maladie restent parcellaires et la recherche clinique peu structurée. L’efficacité du seul traitement recommandé, la ribavirine, est aujourd’hui remise en cause. Il apparait donc urgent de pouvoir disposer de données actualisées, précises et fiables sur la maladie, son cours évolutif, sa prise en charge, son pronostic et les facteurs qui y sont associés. Il est également important que les malades qui en souffrent puissent avoir accès à un standard de soins optimisé. Il est enfin indispensable de développer les capacités de recherche clinique en zone d’endémie.Dans cette thèse, nous faisons une synthèse des connaissances accumulées sur la fièvre de Lassa depuis sa découverte en 1969. Puis nous exposons les raisons qui nous ont conduits à mettre en place un programme de réponse et de recherche sur la fièvre de Lassa. Nous expliquons la démarche suivie pour renforcer le standard de soins et mettre en place une plateforme de recherche clinique en collaboration avec l’un des principaux centres de prise en charge de la fièvre de Lassa au Nigeria. Nous présentons les premiers résultats de l’étude de cohorte prospective LASCOPE qui inaugura ce programme.Entre avril 2018 et mars 2020, ce sont 534 patients atteints de fièvre de Lassa prouvée par RT-PCR qui ont été pris en charge dont 77 (14,4%) sont décédés. 510 participants ont été inclus. Parmi eux on dénombrait 258 hommes et 252 femmes ; 84 étaient des enfants. Le délai médian entre l’apparition des symptômes et l’admission était de 8 jours (IIQ 7-13). A l’admission, 37,8% avaient une valeur de Ct de la RT-PCR du gene GPC du virus de Lassa <30. Entre l’admission et la fin du suivi, 120 (26,5%) ont atteints un score NEWS2 ≥7, 67(13,5%) un stade KDIGO ≥2 et 41 (8,0%) ont été dialysés. Tous ont reçu de la ribavirine pendant une durée médiane de 10 jours (IIQ 9-13). 62 (12,2%) sont décédés (57 [13,4%] adultes, 5 [6,0%] enfants. Le délai médian entre l’admission et le décès était de 3 jours (IIQ 1-6). Les caractéristiques suivantes à l’admission étaient associées à la mortalité en analyse multivariable : l’âge ≥ 45 ans (Odds Ratio ajusté [aOR] 16,30 [IC95% 5,31-50,30]), un score NEWS2 ≥7 (aOR 4,79 [IC95% 1,75-13,10]), un stade KDIGO ≥2 (aOR 7,52 [IC95% 2,66-21,20]), une valeur d’ALAT ≥ 3 fois la limite supérieure de la normale (aOR 4,96 [IC95% 1,69- 14,60]) et une valeur de Ct de la RT-PCR Lassa <30 (aOR 4,65 [IC95% 1,50-14,50]). Ces résultats devraient s’avérer utiles pour la conception de futurs essais cliniques mais aussi pour l’actualisation des recommandations de prise en charge de la maladie. Le cadre de cette étude de cohorte nous a également permis de documenter et décrire une présentation atypique de la maladie, sous la forme d’une paraparésie d’apparition retardée. Cette observation originale vient compléter le spectre évolutif des manifestations neurologiques de la fièvre de Lassa.Deux études complémentaires sont nichées dans la cohorte LASCOPE, portant respectivement sur la pharmacocinétique de la ribavirine telle qu’employée dans le traitement de la fièvre de Lassa et sur la physiopathologie de l’atteinte cardio-circulatoire pouvant survenir au cours de la maladie. Le recrutement dans ces études nichées est toujours en cours.Enfin, un essai clinique de phase II évaluant la pharmacocinétique, la sécurité et la tolérance d’un nouvel antiviral, le favipiravir, pour le traitement de la fièvre de Lassa est également en cours de mise en place sur deux sites au Nigeria dont celui avec lequel nous collaboronsLassa fever, an endemic disease with seasonal epidemic recrudescence, is considered to be responsible for 300 000 cases and 5000 death each year throughout Western Africa. As such, it has been listed as a priority for research. Over the past few years, Nigeria reported the highest and ever increasing number of cases, now exceeding a thousand per year. However, fifty years after the discovery of the disease, our knowledge is still limited and clinical research capacities remained poorly developed. The efficacy of the only available treatment, ribavirin, is still to be assessed. Hence, there is a need for up to date and reliable data on the disease course, management, mortality and prognostic factors. It is also of paramount importance that the patients suffering from Lassa fever could gain access to an optimised standard of care. Lastly, clinical research capacities need to be developed urgently in endemic areas.In this thesis, we review the knowledge gathered on Lassa fever from its discovery in 1969 till date. Then, we explain the reasons that led us to set up a response and research program on Lassa fever, as well as our approach to reinforce the standard of care and build a clinical research platform in collaboration with one of the main Lassa treatment centres in Nigeria. Next, we present the first results of the LASCOPE cohort study which represent the cornerstone of our program.From April 2018 to March 2020, 534 patients with RT-PCR proven Lassa fever were followed-up of whom 77 died (14.4%). 510 participants were enrolled in the cohort: 258 men and 252 women, 84 being children. The median delay between the symptoms onset and admission was 8 days (IQR 7-13). On admission, 37.8% had a Lassa RT-PCR Ct value <30. From admission to end of follow-up, 120 (26.5%) had a NEWS2 ≥7, 67(13.5%) had a KDIGO ≥2, and 41 (8.0%) underwent dialysis. All of them received ribavirin therapy with a median duration of 10 days (IQR 9-13). 62 (12.2%) died (57 [13.4%] adults, 5 [6.0%] children. The median delay between admission and death was 3 days (IQR 1-6). The following characteristics on admission were independently associated to mortality: age ≥ 45 years (adjusted Odds Ratio [aOR] 16.30 [95%CI 5.31-50.30]), NEWS2 ≥7 (aOR 4.79 [95%CI 1.75-13.10]), KDIGO ≥2 (aOR 7.52 [95%CI 2.66-21.20]), ALAT ≥ 3 times the upper limit of normal range (aOR 4.96 [95%CI 1.69- 14.60]), a Lassa RT-PCR Ct value <30 (aOR 4.65 [95%CI 1.50-14.50]). Those results will be helpful for the conception of future therapeutic clinical trials as well as for updating existing management guidelines. The framework of this cohort also gave us the opportunity to describe an unusual presentation of the disease, namely delayed paraparesis. This original observation add to the evolving knowledge regarding the spectrum of Lassa fever-related neurological manifestations.Two complementary studies are nested in the LASCOPE cohort, concerning the pharmacokinetics of ribavirin, as it is used for the treatment of Lassa fever, as well as the pathophysiology of cardiovascular dysfunction that can occur during Lassa fever. Inclusions in these nested studies is still ongoing.Finally, an upcoming phase II clinical trial evaluating the pharmacokinetics, security and tolerability of a novel antiviral drug, favipiravir, for the treatment of Lassa fever is currently being prepared in two Nigerian sites, including the one we are collaborating with
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Chochua, Lasha [Verfasser]. "Essays in International Trade Policy and Social Choice under Ambiguity / Lasha Chochua." Bielefeld : Universitätsbibliothek Bielefeld, 2019. http://d-nb.info/1176701428/34.
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Vieira, Leonardo Medeiros. "O tema da razia de gado (boēlasía) na épica homérica." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/8/8143/tde-17032017-102533/.
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O tema da razia de gado (boēlasía) é uma constante nos textos conservados da tradição épica grega arcaica, nos quais figura na forma de narrativas breves ou de referências alusivas. Apesar disso, pouco se escreveu acerca desse tema, e os poucos estudos realizados se concentraram apenas na consideração da recorrência boēlasía como um reflexo da importância do gado na economia da honra típica dos poemas homéricos ou na sua explicação como um derivado de estruturas míticas herdadas do protoindo-europeu. É justamente essa lacuna que esta tese se propõe a atacar, por meio da recolha e cotejo de parte das narrativas e referências homéricas a essa atividade e do seu exame a partir dos referenciais teóricos e metodológicos oriundos da crítica oralista do épos arcaico, particularmente os métodos de análise temática que partem da recepção dos poemas.The cattle-raid (boēlasía) theme is a constant in the preserved texts of the tradition of Greek archaic epic, wherein it appears either in the form of brief narratives or of allusive references. Nonetheless, little has been written about this theme, and the few studies there are have focused only in the consideration of the recurrence of the boēlasía as a reflex of the importance of cattle in the honour economy typical of the homeric poems or in its explanation as a derivation of mythical structures inherited from the proto-indoeuropeans. This dissertation aims precisely at such blind spot, recovering and comparing part of the homerical references to this activity and examinig them via theoretical and methodological insights originated in the oralist critical tradition of the archaic épos, particularly those theme-based analytical methods that take into consideration the reception of the poems.
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Bradley, Benjamin T. "Characterization of a Putative Quaternary Neutralizing Epitope on the Lassa Virus Glycoprotein." Thesis, Tulane University, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10265711.
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Lassa virus (LASV) is the causative agent of Lassa Fever (LF), an acute and occasionally fatal disease with hemorrhagic features. Current treatments for LF are limited to ribavirin and supportive care. The objective of this dissertation project was to characterize a human monoclonal antibody (mAb) with the potential to treat LASV infections. This antibody, mAb 8.9F, was isolated from the serum of a convalescent patient and has been shown to protect guinea pigs from lethal LASV challenge. Our approach focused on confirming that mAb 8.9F bound a quaternary neutralizing epitope (QNE), determining which residues comprised the epitope, and examining how mutations to critical residues would impact viral fitness. Our results showed that mAb 8.9F shared a number of features similar to previously characterized QNEs including broad neutralization of viral subtypes and high sensitivity to epitope disruption by detergents. We found that mAb 8.9F recognizes sites on both the GP1 and GP2 subunits of the LASV glycoprotein. Both subunits dissociate from the antibody at similar rates under chaotropic conditions, suggesting that these subunits have equal binding affinity with mAb 8.9F. To identify amino acids important to the epitope, we used a method of knockout site-directed mutagenesis that replaced sequences of LASV glycoprotein with homologous sequences from lymphocytic choriomeningitis virus. We created single mutations for those regions unreactive with mAb 8.9F and identified H124F, P145R, and F147N as mutations capable of abrogating mAb 8.9F reactivity. Viral fitness of these mutants was evaluated by measuring glycoprotein processing and viral infectivity. Our results showed that mutations abrogating mAb 8.9F binding did not significantly inhibit glycoprotein production, processing, or surface transport; neither was pseudovirus formation affected. However, these mutations did significantly reduce pseudovirus infectivity suggesting that mutants escaping mAb 8.9F neutralization may be less fit. The role of N-linked glycosylation in mAb 8.9F recognition was also examined but results proved inconclusive. In summary, this work provides a detailed analysis of the first documented QNE found on the Lassa virus glycoprotein. This work will help direct rational vaccine design and post-exposure antibody therapy.
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NeCastro, Peter. "Enlightened Reactionaries: Progress and Tradition in the Thought of Christopher Lasch, Paul Goodman and Jane Jacobs." Thesis, Boston College, 2020. http://hdl.handle.net/2345/bc-ir:108722.
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Thesis advisor: Peter SkerryThe most important political fault line in American politics today is marked by the postwar liberal consensus itself. What is often overlooked, however, is that both liberals and anti-liberals assume a modern, progressive view of history in which the world is growing up to become more secular, technologically advanced, and egalitarian. Liberals celebrate this trajectory as they see themselves “on the right side of history.” They consider their opponents backward holdouts or, more generously, those not yet enjoying the goods of modern life. Anti- liberals on the right see the world according to liberalism proceeding apace to undo traditional morality, globalize economies, automate jobs, replace the nation-state, and undermine cultural norms. A nostalgic politics of reaction aspires to reverse the course of history and return to an unmolested golden age. In the words of one recent variation on this theme, only such a reversal can “Make America Great Again.” This dissertation offers intellectual portraits of three American social critics: Christopher Lasch, Paul Goodman, and Jane Jacobs. Each was a critic of progressive habits of mind in different ways, but all three offer an alternative to the progressive optimism and nostalgia for the past at work in today’s debates. If, then, these thinkers were reactionaries in resisting progressive programs of their times, they were enlightened reactionaries insofar as they rationally resisted the deeper assumption of inevitable progress that animates both left and right. While I address a specific concern in the work of each writer, I draw out three points common to their thought. First, each thinker dissolves the dichotomy between past and future that is central to progressive history. The progressive view of history shared by liberal and anti-liberal alike points toward, alternatively, an inevitably improved future or a past that is slipping away. Lasch, Goodman, and Jacobs, however, point to the continuity of past and future and resist subsuming the present in a deterministic account of history. Second, the thought of each embodies a defense of tradition – historically conditioned ways of knowing, as opposed to supposedly trans-historical universal reason. That defense is expressed not only in each thinker’s view of the past as a resource for the present, but in his or her resistance to the very idea of an Archimedean point that is assumed by claims to have seen the end of history. Indeed, each thinker’s arguments are presented explicitly as part of a tradition, and the work of each points to the importance of tradition as an indispensable lens on the world. Each author shows how the assumption of progress, despite progressives’ claims to have escaped tradition, does not reflect an inescapable law of history but is itself part of a modern tradition that we are free to modify. This in turn points to the political possibilities of recovering tradition as the basis of common discourse. To the extent we are conscious of the decisive role of tradition, we will be aware of the degree to which we are responsible agents: responsible for the contingent way we see the world, and for the contingent choices made by the light of our traditions. Finally, I argue that Lasch, Goodman, and Jacobs’s use of tradition stands in contrast not only to transcendent, objective reason but also to an understanding of traditions as closed language games, coherent in themselves but rationally inaccessible to one another. Lasch, Goodman, and Jacobs present a view in which traditions are dynamic, self-correcting, ongoing arguments within and between themselves. Their use of tradition-bound arguments to develop counter-traditions against dominant progressive perspectives exemplifies the way in which traditions might confront and correct one another
Thesis (PhD) — Boston College, 2020
Submitted to: Boston College. Graduate School of Arts and Sciences
Discipline: Political Science
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Priester-Lasch, Maximilian [Verfasser], and Gabriele [Akademischer Betreuer] Alex. "Eine Reise nach Indien. Übersetzungen eines Modells / Maximilian Priester-Lasch ; Betreuer: Gabriele Alex." Tübingen : Universitätsbibliothek Tübingen, 2017. http://d-nb.info/1196702179/34.
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BENTO, EDSON CAMPOS. "EVALUATION OF THE FLOW CONDITIONS THROUGH THE FOUNDATION OF THE LAÚCA DAM - ANGOLA." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=28484@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE EXCELENCIA ACADEMICA
O aproveitamento hidroelétrico de Laúca, está localizado no km 307,5, do rio Kwanza (medido a partir de sua foz), cerca de 47 km a jusante do AHE Capanda, próximo à localidade de N hangueYa Pepe, na província do Kwanza Norte – Angola. A obra teve início no final de 2012 e terminará em 2017. Normalmente, as fundações de barragens são obras projetadas na superfície do globo e apoiadas sobre as rochas, e em muitas dessas rochas encontram-se fraturadas que geram algumas descontinuidades, ocasionando valores elevados da permeabilidade nas fundações de barragens. Esta dissertação tem como principal objetivo avaliar as condições de estanqueidade das fundações do aproveitamento hidrelétrico de Laúca. Esta avaliação foi feita a partir dos resultados de ensaios de perda d água sob pressão e interpretada através da teoria dos ensaios de Maurice Lugeon, que são realizados em maciços rochosos através de furos de sondagens em diferentes estágios. Estes ensaios têm como finalidade indicar os valores da permeabilidade e do comportamento desses maciços, em relação à percolação d água através das descontinuidades. Através da teoria de Lugeon, pode-se definir o tipo de escoamento, comportamento do preenchimento nas fraturas e fissuras que indiquem valor representativo da permeabilidade do maciço, que, por sua vez, orientará uma tomada de decisão sobre a necessidade de se adotar alguma intervenção, bem como a adoção de um programa de tratamento das fundações da barragem.
The Laúca Dam is located at km 307.5 of the Kwanza River (measured from its mouth), about 47 km downstream from Capanda Hydroelectric Project, near the village of Ya N hangue Pepe in the province of Kwanza Norte - Angola. Usually dam foundations are designed and constructed along the eroded channel rivers and supported on the rocks, and many of these rocks are fractured, and generate some discontinuities with a high degree of hydraulic conductivity of the dam foundations .This dissertation aims to assess and to evaluate the seepage conditions throughout the foundations of hydroelectric Laúca. This evaluation is normally made using the tests of loss of water with pressure and interpreted using the proposal of Maurice Lugeon, i.e., the well-known in the practice of dam engineering as the Lugeon test. This test is performed in rock masses through boreholes and different stages, aims to determine the hydraulic conductivity and the behavior of the fractured rock mass, taking into the consideration the water flow through the discontinuities and fractures. Using the Lugeon set of results, it can be estimated important engineering characteristics such as: the volume and the type of flow and representatives values of the equivalent mass of the hydraulic conductivity. All this information is useful to establish the grouting procedure and also to verify the performance of the treatment carried out to reduce leakage through the dam foundation.
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Krasilnikova, Lydia A. "Metagenomic investigation of co-infections of Ebola virus disease and Lassa fever patients." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106113.
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Thesis: M. Eng. in Computer Science and Molecular Biology, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2016.Cataloged from PDF version of thesis.
Includes bibliographical references (page 37).
Sequencing followed by metagenomic analysis is an extremely promising method for broad, unbiased disease profiling of patients for disease surveillance and diagnosis. Here, we use two popular metagenomics tools in union, k-mer-based Kraken with reads and BLAST- and LCAbased MEGAN with assembled contiguous sequence. We analyze sequence from 463 febrile and afebrile patients from Sierra Leone before and during the 2014 Ebola virus outbreak. We find that co-infection with malaria is correlated with increased survival of Ebola virus patients, from 18% survival rate to 53%. We also explore the utility of and emphasize the need for both positive and negative controls to distinguish and remove noise and contaminants from real signal, especially to keep up with increasing sensitivity in sequencing.
by Lydia A. Krasilnikova.
M. Eng. in Computer Science and Molecular Biology
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Evans, John Scoville. "Parisina: Literary and Historical Perspectives Across Six Centuries." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4074.
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This thesis explores the relationship between the many literary texts referring to the deaths of Ugo d'Este and Parisina Malatesta, who were executed in Ferrara in 1425 in accordance with an order by Niccolò III d'Este after he discovered their incestuous relationship. The texts are divided in three categories: (1) the fifteenth- and sixteenth-century Italian novellas and their translations; (2) the seventeenth-century Spanish tragedy; and (3) the nineteenth- and twentieth-century Romantic works. Although these categories divide the various texts chronologically, they also represent a thematic grouping as the texts within each category share common themes that set them apart from those in the other groups. While the various texts all tell the same story, each approaches the tragedy slightly differently based largely on the audience for which it was intended. Thus, the time and place of each text greatly affects its telling. Still, the fact that substantial differences exist between texts that were produced in both geographic and temporal proximity suggests that these are not all-determining factors. Although scholarship exists analyzing individual texts, a comprehensive study of the literary accounts relating to the tragedy has never been undertaken. Rather than detracting from the story, the differences put forth in each of the literary texts enrich the global reading experience by offering many perspectives on the tragedy. In addition, these differences influence how the reader reacts to each of the other texts. Familiarity with one version of the story changes the way a reader approaches the others. A parallel reading of the different versions of the story also shows the power culture has on interpretation. Texts referring to a singular event from one time and place sharply contrast with those that are the product of other circumstances.
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Swidsinski, Anja [Verfasser], Alexander [Gutachter] Lasch, Alexander [Akademischer Betreuer] Lasch, Dorothee [Gutachter] Wieser, and Gudrun [Gutachter] Loster-Schneider. "Multiperspektivität und interpretatorische Relevanz : Eine relevanztheoretisch- literaturwissenschaftliche Untersuchung von Peter Wawerzineks „Rabenliebe“ und Wolfgang Herrndorfs „Arbeit und Struktur“ / Anja Swidsinski ; Gutachter: Alexander Lasch, Dorothee Wieser, Gudrun Loster-Schneider ; Betreuer: Alexander Lasch." Dresden : Technische Universität Dresden, 2021. http://d-nb.info/123241042X/34.
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Pavez, Alvarado Andrés. "Structure et déformations du volcan LASCAR à partir d'observations par satellites et au sol : apports à la connaissance et la surveillance des volcans andésitiques." Paris, Institut de physique du globe, 2005. http://www.theses.fr/2005GLOB0009.
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Les volcans andésitiques des zones de subduction sont caractérisés par une dynamique éruptive complexe. Les déformations du sol sont parmi les signaux précurseurs de leur activité explosive ceux qui sont les moins bien compris. Elles reflètent à la fois la dynamique interne, mais peuvent aussi résulter de l’interaction entre la tectonique locale et la mise en place des magmas. Cette étude centrée sur le Lascar (Nord Chili) et son environnement régional a eu pour objectifs 1 : de mieux comprendre son activité récente à partir des déformations de surface et 2 : d’étudier sa structure interne et ses relations avec la tectonique locale. Nous avons suivi pour cela une démarche pluridisciplinaire à partir de différentes méthodes d’observation par satellites et au sol. Le Lascar est le volcan le plus actif des Andes Centrales, une des régions les plus adaptées pour étudier les interactions tectono-volcaniques. Par ailleurs, son activité historique cyclique en fait un très bon candidat pour étudier la dynamique de ces volcans. Nous avons amélioré la compréhension de l’activité récente du Lascar par la mise en évidence et la quantification des déformations du sol à partir des méthodes de la géodésie spatiale et des variations thermiques à partir d’observations satellitales. Nous apportons aussi les premières informations géophysiques de détail (gravimétrie) sur la structure interne du complexe volcanique du Lascar et de ses liens avec un substratum préfracturé. Enfin, nous confirmons les potentialités de l’interférométrie radar combinée aux observations géodésiques au sol (microgravimétrie, GPS) pour l’étude et la surveillance de ce type d’édificesAndesitic volcanoes in subduction zones are characterized by complex eruptive dynamics. Ground deformations are among less understood precursor signals of their explosive activity. They are related to internal dynamics as well as local tectonics and magma emplacement interactions. This study, focused on Lascar volcano (North Chile) and regional basement had two main objectives : 1) to better understand its recent activity from ground deformations and 2) to investigate its internal structure and relationships with local tectonics. We carried for that purposes a multidisciplinary study using different satellite and ground observations. Lascar is the most active volcano in Central Andes, one of the most adapted regions to investigate tectono-volcanic interactions. Furthermore, Lascar cyclic and historical activity makes it a very good candidate to study andesitic volcanoes dynamics. We improved Lascar recent activity understanding by showing and quantifying ground deformations from spatial geodesy methods and thermal variations using satellite observations. We also contributed with first detailed geophysical information (gravimetry) on Lascar volcanic complex internal structure as well as its links to previously fractured basement. Finally, we confirmed radar interferometry potentialities combined with ground geodetic observations (microgravity, GPS) to study and monitor this kind of edifices
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Lasch, Ole [Verfasser], and Heinrike [Akademischer Betreuer] Wilkens. "Klinische Auswirkungen eines Ganzkörpervibrationstrainings bei Patienten mit fortgeschrittener COPD / Ole Lasch ; Betreuer: Heinrike Wilkens." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2017. http://d-nb.info/1133492118/34.
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Hoffmann, Kirsten [Verfasser], Udo [Gutachter] Buscher, and Rainer [Gutachter] Lasch. "Railway crew scheduling problems with attendance rates / Kirsten Hoffmann ; Gutachter: Udo Buscher, Rainer Lasch." Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1227202644/34.
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Vogel, Wolfgang [Verfasser], Rainer [Gutachter] Lasch, and Udo [Gutachter] Buscher. "Complexity management in variant-rich product development / Wolfgang Vogel ; Gutachter: Rainer Lasch, Udo Buscher." Dresden : Technische Universität Dresden, 2019. http://d-nb.info/1226944701/34.
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Manske, Quélen Beatriz Crizel. "Por uma bioética laica e sistêmica a partir do domínio linguístico proposto por Maturana." Florianópolis, SC, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/94789.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Jurídicas, Programa de Pós-Graduação em Direito, Florianópolis, 2011Made available in DSpace on 2012-10-25T16:16:46Z (GMT). No. of bitstreams: 1 295436.pdf: 637937 bytes, checksum: a1c2cae1466db738a4c6111df10b509a (MD5)
Inicialmente o trabalho se dedica a provar a inversão do cogito cartesiano e a fragilidade da aplicação do método cartesiano, para em um segundo momento discutir a bioética, mais precisamente os princípios bioéticos expostos na obra de Beauchamp e Childress, procurando evidenciar o conteúdo e o discurso envolvido na construção de cada um dos princípios. A pesquisa propõe ainda uma análise das influências das instituições religiosas e do pensamento eclesiástico na construção dos discursos bioéticos, para por fim, explorar na obra de Maturana uma possibilidade de unificação dos discursos bioéticos, utilizando-se para tanto, dos conceitos de autopoiése, acoplamento estrutural, ontogenia e outros como o do domínio linguístico na qual a proposta da pesquisa se funda ao propor um domínio linguístico próprio a bioética.
Initially, the work is dedicated to prove the inversion of the Cartesian cogito and the fragility of implementation of the Cartesian method, at a second time to discuss bioethics, specifically bioethical principles exposed in the work of Beauchamp and Chilress, trying to show the content and discourse involved in construction of each principle. The research also proposes an analysis of the influences of religious institutions and ecclesiastical thinking in the construction of bioethical discourse, to finally, explore in the Maturana#s work one possibility of unification of bioethical discourse, using for this purpose, the concept of autopoiesis, coupling structure, ontogeny and others such as the linguistic field in which the research proposal is founded by proposing a linguistic field of bioethics itself.
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Vibert, Didier. "Modélisation et reconstruction tridimensionnelle de la couronne solaire dans le cadre de l'expérience LASCO." Aix-Marseille 3, 1997. http://www.theses.fr/1997AIX30072.
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Cette these presente le developpement de deux methodes d'etude de l'aspect tridimensionnel de la couronne solaire, dans le cadre de l'experience coronographique lasco, qui observe continuement la couronne depuis fevrier 1996. La premiere methode est une simulation des images en lumiere blanche a partir d'une description tridimensionnelle de la densite electronique du plasma coronal. Un echantillonnage non-uniforme de l'espace par la methode arborescente des octree a ete utilise pour cette description. Le gain ainsi realise sur la taille de la representation numerique de la densite electronique ainsi que sur le temps de calcul des images a rendu possible la synthese de sequences animees couvrant une rotation solaire. La comparaison de ces sequences avec les sequences de prises de vues de lasco a montre que nous avions reproduit correctement certaines des caracteristiques tridimensionnelles de la couronne solaire et notamment sa structure en forme de feuillet plisse. La deuxieme methode developpee consiste en un code d'inversion capable de reconstruire la densite electronique volumique a partir d'un ensemble de cliches coronographiques de lasco couvrant une rotation solaire. Ce code est une adaptation des algorithmes dits algebriques a ce cas de tomographie. Les contraintes d'observation en vue de l'utilisation de ce code ont ete degagees puis les limites et potentialites de la methode ont ete precisees en l'eprouvant a l'aide des images synthetisees.
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Fang, Yanling. "Synthèse d'images de la couronne solaire et simulation intrumentale du coronographe spatial LASCO/C2." Aix-Marseille 3, 1992. http://www.theses.fr/1992AIX30084.
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Ortiz, Marby Zuley Bolaños. "Componentes conexas de grupos em teorias NIP." Universidade Federal de Goiás, 2017. http://repositorio.bc.ufg.br/tede/handle/tede/7089.
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Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq
In this work, we estudied three special subgroups of bounded index in G: The intersection of subgroups definables of G, the small type-definable subgroup and the small invariant subgroup of G, called connected components of G and denoted G0G00 e G¥. We give an exposition of theorem of Gismatullim, where he proved the existence of G¥ in a theory with NIP.
Neste trabalho estudamos três subgrupos de um grupo G com índices limitados em G: A interseção de todos os subgrupos definíveis de G , o menor subgrupo tipo-definível e o menor subgrupo invariante de G, chamados componentes conexas de G, denotados respectivamente G0G00 e G¥. Apresentamos uma demonstração da existência de G¥ em uma teoria NIP, baseados na prova feita por Gismatullin em 2011.
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Mikuska, Edenilson. "SE DIO TE LASCI, LETTOR. ASPECTOS DA AUTOTEORIZAÇÃO EM FANNY OWEN, DE AGUSTINA BESSA-LUÍS." UNIVERSIDADE ESTADUAL DE PONTA GROSSA, 2014. http://tede2.uepg.br/jspui/handle/prefix/465.
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Previous issue date: 2014-06-24Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The subject of this study is the self-theorization in the novel Fanny Owen (1979) by Portuguese writer Agustina Bessa-Luís. The self-theorization occurs when literature looks at itself in a movement of self-reflexivity. Fanny Owen herself is entirely a self-theorization exercise. Her work is a fictional treatment of biographical facts related to historical personalities – mainly to the writer Camilo Castelo Branco, to his friend José Augusto Pinto de Magalhães, and to Fanny Owen, daughter of the British Colonel Hugh Owen , who had a leading role in the Portuguese Civil War (1828 -1834) . These three characters are involved in a love triangle. The narrative presents as a background the cultural context dominated by the Romantic movement, which has notable influence on the characters, especially on Fanny and Jose Augusto, readers of literature – mainly of Lord Byron. Given the importance that the theme of the literature appears in Fanny Owen, it seemed appropriate to allocate it in the subgenre "novel of reading", concept created by German theorist Volker Rollof. The novel of reading is that work whose reading of literature by its characters featured prominently in the plot. Such a condition of the work herein studied favors our approach of the self-theorization theme, since this category of novels, when addressing the relationship between reader and literature reading, necessarily establishes a discussion on the literary phenomenon. However, self-theorization also appears at other levels in this novel. It occurs through the narrator, who at several moments uses strategies in an attempt to be confused with the empirical author and that, moreover, mind-wanders about the art of writing. It also occurs when it portrays the writer Camilo Castelo Branco as a writer in training. Chapter I addresses specifically the self-theorization theme and reflections supported by theoretical contributions from Jonathan Culler, Antoine Compagnon, David Lodge, Umberto Eco, Lelia Pereira Duarte and Karin Volobuef. In Chapter II, it begins the study of the novel Fanny Owen discussing its main themes: the romantic culture, which appears portrayed in panorama along the plot, and the love triangle, which I analyze in accordance with the ideas of Denis de Rougemont and René Girard. The third chapter deals specifically with the self-theoretical mechanisms in the novel Fanny Owen.
O presente trabalho tem como tema a autoteorização no romance Fanny Owen (1979), da escritora portuguesa Agustina Bessa-Luís. A autoteorização ocorre quando a literatura volta o olhar sobre si mesma, num movimento de autorreflexividade. Fanny Owen é integralmente um exercício de autoteorização. A obra dá tratamento ficcional a fatos biográficos relacionados a personalidades históricas – principalmente o escritor Camilo Castelo Branco, seu amigo José Augusto Pinto de Magalhães, e Fanny Owen, filha do coronel inglês Hugh Owen, o qual teve destacado papel na Guerra Civil Portuguesa (1828-1834). Temos então estes três personagens envolvidos num triângulo amoroso. A narrativa apresenta como pano de fundo o contexto cultural dominado pelo movimento romântico, que tem notável influência nos personagens, principalmente em Fanny e José Augusto, leitores de literatura – sobretudo, de Lord Byron. Dada a importância com que o tema da literatura aparece em Fanny Owen, pareceu-me cabível alocá-lo no subgênero ―romance de leitura‖, conceito criado pelo teórico alemão Volker Rollof. O romance de leitura é a obra em que a leitura de literatura pelos personagens aparece com destaque na trama. Tal condição da obra ora estudada oportuniza a abordagem do tema da autoteorização, já que tal categoria de romances, ao tratar da relação entre leitor e leitura de literatura, estabelece necessariamente uma discussão sobre o fenômeno literário. No entanto, a autoteorização aparece também em outros níveis neste romance. Ocorre através do narrador, que em diversos momentos lança mão de estratégias na tentativa de ser confundido com o autor empírico e que, além disso, é dado a divagações sobre a arte da escrita. Ocorre também na medida em que retrata o escritor Camilo Castelo Branco como escritor em formação. O capítulo I aborda especificamente a autoteorização e conta com reflexões amparadas pelos aportes teóricos de Jonathan Culler, Antoine Compagnon, David Lodge, Umberto Eco, Lelia Pereira Duarte e Karin Volobuef. No capítulo II, começo o estudo do romance Fanny Owen, discutindo seus temas principais: a cultura romântica, a qual aparece retratada em panorama ao longo do enredo, e o triângulo amoroso, que analiso segundo as ideias de Denis de Rougemont e René Girard. O terceiro capítulo trata especificamente dos mecanismos autoteorizantes em Fanny Owen.
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Abreu, Maria Emília Vieira de. "Professora Leolinda Daltro: uma proposta de catequese laica para os indígenas do Brasil 1895-1911." Pontifícia Universidade Católica de São Paulo, 2007. https://tede2.pucsp.br/handle/handle/10590.
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Previous issue date: 2007-05-09This work is about the teacher Leolinda Daltro s proposal of laity catechesis, at the early republican period in Brasil. It intends to give a panoramic history of Indian education in Brasil, since the Imperial period until today, showing the changes occurred since the implementation of the religious catechesis system until the last discussions about the Indian population s needs and conquest in the multicultural and bi-language fields, according each people needs. The work also tells the teacher s trajectory, the beginning of her actuation in the Indian cause, her excursion at Goiás and Mato Grosso s inlands, her attempt to found an association of Indian protection, and the moment she changes her focus at the feminine cause. Finally, it shows the book Da catequese dos índios do Brasil (notícias e documentos para a história) 1896-1911, that contain documents selected and edited by the teacher Leolinda Daltro in 1920. The book can be seeing as a mix of trip journal and scrapbook, telling a non-linear or chronological trajectory of this teacher, and it is a certification of the difficulties facing by a woman who decided to cross the Brazilian inland
Este trabalho trata da proposta de catequese laica da professora Leolinda Daltro, no início do período republicano no Brasil. Pretende dar um panorama da história da educação escolar indígena no Brasil, desde o período Imperial, até os dias de hoje, mostrando as várias mudanças ocorridas desde a implantação do sistema de catequese religiosa, até as atuais discussões sobre as necessidades e conquistas das populações indígenas quanto à educação escolar multicultural e bilíngüe, de acordo com as necessidades de cada povo. Conta a trajetória desta professora, o início de sua atuação em prol da causa indígena, sua excursão aos sertões de Goiás e Mato Grosso, sua tentativa de fundar uma associação de proteção aos indígenas, até a sua saída do movimento para passar à luta pela causa feminina. Apresenta o livro Da catequese dos índios do Brasil (notícias e documentos para a história) 1896-1911, que contém documentos selecionados e editados pela professora Leolinda Daltro em 1920. O livro pode ser visto como um misto de álbum de viagem e de recortes e coletâneas que contam, ainda que não de forma linear nem cronológica, a trajetória desta professora e é testemunho das dificuldades enfrentadas por uma mulher que naquela época se dispusesse a percorrer o sertão brasileiro
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Silva, Cícero Lopes da. "Contribuições da metodologia transdisciplinar para a fundamentação do ensino religioso no contexto da escola laica." Universidade Católica de Pernambuco, 2013. http://www.unicap.br/tede//tde_busca/arquivo.php?codArquivo=983.
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Esta pesquisa visa discutir a pertinência do Ensino Religioso na escola pública e laica do Brasil. Num primeiro momento desenvolve-se uma análise histórico-crítica da trajetória e evolução do Ensino Religioso nas escolas públicas do país, destacando, sobretudo, a relação Igreja e Estado, a Legislação Nacional e as linhas pedagógicas subjacentes ao processo. No segundo capítulo trabalha-se com João Décio Passos e Afonso Soares, que nos indicam três modelos de Ensino Religioso presentes no Brasil, o Catequético, Teológico e das Ciências da Religião, onde se analisa a proposta de adotar o modelo das Ciências da Religião como a melhor opção para sustentar a autonomia epistemológica e pedagógica do Ensino Religioso na escola pública do país hoje. Por fim, defende-se a necessidade de um modelo mais integral para o estudo do fenômeno religioso através da abordagem transdisciplinar de Edgar Morin e Basarab Nicolescu, tendo em vista a formação dos estudantes numa perspectiva de integralidade e cidadania, conforme expresso no artigo 33 da LDB n 9.394/96, com a nova redação do Artigo 33.This research aims to discuss the relevance of religious education in public schools and secular Brazil. At first develops an analysis of the historical-critical trajectory and evolution of religious education in public schools in the country, highlighting especially the relationship Church and State, National Legislation and lines underlying the pedagogical process. In the second chapter we work with João Décio Passos e Afonso Soares, we suggest three models of Religious Education present in Brazil, the Catechism, the Theological and Religious Studies, which examines the proposal to adopt the model of the Sciences of Religion as the best option to sustain pedagogical and epistemological autonomy of religious education in public schools in the country today. Finally, it is argued the need for a more comprehensive model for the study of religious phenomena through the transdisciplinary approach of Edgar Morin and Basarab Nicolescu, aimed at training the students a perspective of wholeness and citizenship, as expressed in Article 33 of LDB No. 9.394/96, with the new wording of Article 33.
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Pannetier, Delphine. "Étude in vitro des réponses lymphocytaires T humaines induites par les virus Lassa et Mopeia." Lyon 1, 2007. http://www.theses.fr/2007LYO10353.
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Ara?jo, Larissa Cicianny Luz Ferreira de. "S?ntese, caracteriza??o e aplica??o de LaSBA-15 e como catalisador para obten??o de biodiesel de soja via rota et?lica." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12947.
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Previous issue date: 2011-07-04Biodiesel is an alternative fuel, renewable, biodegradable and nontoxic. The transesterification of vegetable oils or animal fat with alcohol is most common form of production of this fuel. The procedure for production of biodiesel occurs most commonly through the transesterification reaction in which catalysts are used to accelerate and increase their income and may be basic, acid or enzyme. The use of homogeneous catalysis requires specific conditions and purification steps of the reaction products (alkyl ester and glycerol) and removal of the catalyst at the end of the reaction. As an alternative to improve the yield of the transesterification reaction, minimize the cost of production is that many studies are being conducted with the application of heterogeneous catalysis. The use of nano-structured materials as catalysts in the production of biodiesel is a biofuel alternative for a similar to mineral diesel. Although slower, can esterify transesterified triglycerides and free fatty acids and suffer little influence of water, which may be present in the raw material. This study aimed at the synthesis, characterization and application of nano-structured materials as catalysts in the transesterification reaction of soybean oil to produce biodiesel by ethylic route. The type material containing SBA-15 mesoporous lanthanum embedded within rightly Si / La = 50 was used catalyst. Solid samples were characterized by X-ray diffraction, thermogravimetric analysis, infrared spectroscopy, nitrogen adsorption and desorption. For the transesterification process, we used a molar ratio of 20:1 alcohol and oil with 0.250 g of catalyst at 60?C and times of 6 hours of reaction. It was determined the content of ethyl esters by H-NMR analysis and gas chromatography. It was found that the variable of conversion obtained was 80%, showing a good catalytic activity LaSBA-15 in the transesterification of vegetable oils via ethylic route
O biodiesel ? um combust?vel alternativo, renov?vel, biodegrad?vel e n?o t?xico. A transesterifica??o dos ?leos vegetais ou gordura animal com ?lcool ? a forma mais usual de produ??o desse combust?vel. O procedimento de produ??o de biodiesel ocorre mais comumente atrav?s da rea??o de transesterifica??o, na qual se utiliza catalisadores para acelerar e aumentar seu rendimento, podendo ser b?sico, ?cido ou enzim?tico. O uso da cat?lise homog?nea requer condi??es e etapas espec?ficas de purifica??o dos produtos da rea??o (?ster alqu?licos e glicerol) e remo??o do catalisador ao t?rmino da rea??o. Como alternativa para melhorar o rendimento da rea??o de transesterifica??o, minimizar os custos com a produ??o ? que muitos estudos est?o sendo realizados com aplica??o de cat?lise heterog?nea. O uso de materiais nano-estruturados como catalisadores na produ??o de biodiesel ? uma alternativa para obter um biocombust?vel semelhante ao diesel mineral. Mesmo sendo mais lentos, conseguem transesterificar os triglicer?deos e esterificar os ?cidos graxos livres, al?m de sofrerem pouca influ?ncia da ?gua, que possa estar presente na mat?riaprima. Este trabalho teve como objetivo a s?ntese, caracteriza??o e aplica??o de materiais nano-estruturados como catalisadores na rea??o de transesterifica??o de ?leo de soja, para obten??o de biodiesel pela rota et?lica. O material do tipo SBA-15 contendo lant?nio incorporado na estrutura mesoporosa, com raz?o Si/La=50, foi utilizado como catalisador. As amostras s?lidas foram caracterizadas por difra??o de raios-X, an?lise termogravim?trica, espectroscopia na regi?o do infravermelho, adsor??o e dessor??o de nitrog?nio. Para o processo de transesterifica??o, utilizou-se uma raz?o molar entre ?lcool e ?leo de 20:1 com 0,250 g de catalisador, temperatura de 60?C e tempos de 6 horas de rea??o. Determinou-se o teor de ?steres et?licos pela an?lise de H-RMN e cromatografia a g?s. Foi verificado que a vari?vel de convers?o obtida foi de 80%, mostrando uma boa atividade catal?tica do LaSBA- 15 na transesterifica??o do ?leo de soja via rota et?lica
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Elston, Morna Caroline. "New fluorogenic substrates to measure activities of elastase & LasA purified from Pseudomonas aerginosa." Thesis, Coventry University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.403614.
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Peters, John Edward. "Pseudomonas aeruginosa LasA protein : purification, characterization, and its role in enhancement of elastase activity /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu148768340144175.
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