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Churchill, Amanda Gann. "Peonies for Topaz." Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12097/.
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A collection of three, interwoven short stories set in Japantown, San Francisco and the Topaz Internment Camp in central Utah during World War II. The pieces in this collection feature themes of cultural identity and the reconstruction of personal identity in times of change and crisis. Collection includes the stories "Moving Sale," "Evacuation," and "Resettlement."
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Churchill, Amanda Gann Rodman Barbara Ann. "Peonies for topaz." [Denton, Tex.] : University of North Texas, 2009. http://digital.library.unt.edu/ark:/67531/metadc12097.
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Raney, Elisa Anne. "Vibration analysis of Topaz II." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA303427.
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Achour, Sara. "Energy-efficient approximate computation in Topaz." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/97329.
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Thesis: S.M. in Computer Science and Engineering, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 69-73).
The increasing prominence of energy consumption as a first-order concern in contemporary computing systems has motivated the design of energy-efficient approximate computing platforms. These computing platforms feature energy-efficient computing mechanisms such as components that may occasionally produce incorrect results. We present Topaz, a new task-based language for computations that execute on approximate computing platforms that may occasionally produce arbitrarily inaccurate results. The Topaz implementation maps approximate tasks onto the approximate machine and integrates the approximate results into the main computation, deploying a novel outlier detection and reliable re-execution mechanism to prevent unacceptably inaccurate results from corrupting the overall computation. Because Topaz can work effectively with a very broad range of approximate hardware designs, it provides hardware developers with substantial freedom in the designs that they produce. In particular, Topaz does not impose the need for any specific restrictive reliability or accuracy guarantees. Experimental results from our set of benchmark applications demonstrate the effectiveness of Topaz in vastly improving the quality of the generated output while only incurring 0.2% to 3% energy overheard.
by Sara Achour.
S.M. in Computer Science and Engineering
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Lu, Hong Materials Science & Engineering Faculty of Science UNSW. "Formation of ??-eucryptite and ??-spodumene from topaz mixtures." Awarded by:University of New South Wales. School of Materials Science and Engineering, 2006. http://handle.unsw.edu.au/1959.4/25141.
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The production of ??-eucryptite [LiAlSiO4] and ??-spodumene [LiAlSi2O6] from topaz [Al2SiO4(F0.64OH0.36)2, containing ~3 wt% quartz impurity] from Torrington, NSW may be of commercial importance since both lithium aluminosilicates have negative or low coefficients of thermal expansion and are used commercially as raw materials in the glass, ceramics, and metallurgical industries. A review of the literature has revealed that the production of ??-eucryptite and ??-spodumene from topaz has not been reported before. The aim of the present work was to determine the kinetics and reaction mechanisms of formation of ??-eucryptite from topaz + lithium carbonate mixtures and ??-spodumene from topaz + lithium carbonate + silica mixtures. To this end, the related reactions and subsolidus phase equilibria of the Li2O-Al2O3-SiO2 ternary system were determined. The subsolidus phase equilibria for the Li2O-Al2O3-SiO2 ternary system were investigated by literature assessment, experimentation, and thermodynamic calculations. The experimentation confirmed the previously published tentative compatibility relations in the Al2O3 and the SiO2 corners. Thermodynamic calculations were used to define the phase relations in the Li2O corner. Thermodynamic calculations also were used to define the phase equilibria for two binary subsystems, Li2SiO3-LiAlO2 and Li4SiO4-LiAlO2. The decomposition of topaz and formation of ??-eucryptite from topaz + lithium carbonate mixtures and ??-spodumene from topaz + lithium carbonate + silica mixtures were investigated experimentally using differential thermal analysis (DTA), thermogravimetric analysis (TGA), X-ray diffraction (XRD), Raman microspectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM). Confirmatory thermodynamic calculations also were done. One significant finding of the present work was the formation of nanofibres from topaz + lithium carbonate mixtures at 1150???C. These fibres were formed by gas-phase reaction of SiF4 and AlOF produced from the reaction between topaz, lithium carbonate and by reaction of SiO2 and Li(OH), which was produced by Li2O volatilisation. These fibres, which were difficult to analyse, most likely consisted of metastable ???-spodumene solid solution or mullite in the incipient stage of formation. Formation of single-phase ???-spodumene from topaz + lithium carbonate + silica mixtures was observed after heating above 950???C for 24 h. Reaction paths for the formation of ??-spodumene over the temperature range 450???-1550???C were proposed. The formation of single-phase ??-spodumene was not simple and straightforward but a complex process involving several precursor phases. Specifically, there were two reaction mechanisms involving the formation of single-phase ???-spodumene by gas-solid reaction and gas-liquid-solid reaction. The reaction kinetics and thermodynamics of the formation of single-phase ??-spodumene at 750???-950???C were assessed. Essential work supplementary to that associated with the Li2O-Al2O3-SiO2 system consisted of determination of the decomposition mechanism of topaz, which was determined to take place in four stages. Reaction paths for the decomposition of topaz also were proposed. Another significant finding of the present work was the formation of transient single-crystal mullite from topaz + lithium carbonate + silica mixtures at ~600???C, which may be contrasted with the normal temperature range of 1000???-1400???C for formation from clay-based raw materials. This phenomenon occurred via a gas-solid growth mechanism. The present observation suggests a potential low-temperature route for the production of high-purity mullite fibres without glass contamination.
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Krizek, E. A. R. "Computational study of radiation-induced defects in topaz." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1465982/.
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This purely theoretical investigation considered the irradiation induced and other intrinsic defects that may form colour centres in topaz. Topaz is an aluminium ouro/hydroxy-silicate and undergoes a colourless to blue optical transformation during irradiative treatment. The depth of hue and quality of the colour is dependent on the type of radiation used, whether thermal annealing was involved, and the origin of the samples. Since the colour centres for any of these processes are not well understood for topaz, a detailed investigation into all likely defects cited in the literature was performed. Ground state electronic structure calculations, using full electron basis sets and hybrid functionals, were performed using the CRYSTAL and CP2K codes, to gain the relative stabilities and structural properties of optimised open shell defect models; as well as the density of states, localised spin densities, and certain EPR parameters. The molecule dynamics time-dependent density functional theory (MD TD-DFT) scheme within the CP2K code was used to generate calculated UV-Vis spectra to compare with experimental data supplied by literature.
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Astrin, Cal D. "Startup control of the TOPAZ-II space nuclear reactor." Thesis, Monterey, California. Naval Postgraduate School, 1996. http://hdl.handle.net/10945/9006.
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Approved for public release; distribution isunlimited.The Russian designed and manufactured TOPAZ-II Thermionic Nuclear Space Reactor has been supplied to the Ballistic Missile Defense Organization for study as part of the TOPAZ International Program. A Preliminary Nuclear Safety Assessment investigated the readiness to use the TOPAZ-II in support of a Nuclear Electric Propulsion Space Test Mission (NEPSTP). Among the anticipated system modifications required for launching the TOPAZ-II system within safety goals is for a U.S. designed Automatic Control System. The requirements and desired features of such a control system are developed based upon U.S. safety standards. System theory and design are presented in order to establish the basis for development of a hybrid control model from available simulations. The model is verified and then used in exploration of various control schemes and casualty analysis providing groundwork for future Automatic Control System design.
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Ramachandran, Vasuki. "Luminescence spectra of lead tungstate, spodumene and topaz crystals." Thesis, University of Sussex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.249387.
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Barkley, Madison C. "The effects of F-OH̄ substitution on the crystal structure of pegmatitic topaz /." Connect to online version, 2007. http://ada.mtholyoke.edu/setr/websrc/pdfs/www/2007/233.pdf.
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Campbell, Sheryl Elaine. "Random vibration analysis of the TOPAZ II nuclear reactor power system." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA303401.
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Rockwell, Robert D. (Robert Durgin). "Investigation of the Topaz-II space nuclear reactor moderator thermal transient." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/12441.
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Benke, Steven M. "Operational testing and thermal modeling of a TOPAZ-II single cell thermionic fuel element test stand." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA293595.
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Thesis (M.S. in Astronautical Engineering) Naval Postgraduate School, December 1994.Thesis advisor(s): Oscar Biblarz, Ashok Gopinath. "December 1994." Bibliography: p. 95-96. Also available online.
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Venable, J. Richard. "Electrical characteristics and thermal analysis of a TOPAZ-II single-cell thermionic fuel element test stand." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1995. http://handle.dtic.mil/100.2/ADA298796.
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Dailey, Shane Robert. "Geochemistry of the Fluorine- and Beryllium-Rich Spor Mountain Rhyolite, Western Utah." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6258.
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The Miocene rhyolites of the Spor Mountain Formation hosts the world's largest beryllium deposit which produced 85% of the world's beryllium in 2010. The fresh lava is extremely enriched in Be (up to 75 ppm in matrix glass). We have examined the rhyolite to understand the Be enrichment. The Spor Mountain rhyolite contains ~40% quartz, ~40% sanidine, ~10% biotite, and ~10% plagioclase, along with accessory fluorite, columbite, euxenite, fergusonite, monazite, thorite, and zircon. Two types of rhyolite erupted within the Spor Mountain Formation, a less evolved magma (1150 ppm Rb, 42 ppm Be, 0.68 wt% F in matrix glass) and an evolved magma (1710 ppm Rb, 75 ppm Be, 1.56 wt% F in matrix glass). Eruption temperatures estimated using zircon saturation, feldspar-liquid, two feldspar, and Ti-in-quartz geothermometers converge on 718 °C for the less evolved magma and 682 °C for the evolved magma. Using the Ti-in-Qz equation of Huang and Audetat (2012), the pressure of the Spor Mountain rhyolite system is estimated to be around 2 kbar at 700°C. Water content of the rhyolite melt was less than <5 wt%, based on the presence of all four major mineral phases at 700°C and the magma was water undersaturated (Webster et al., 1987). Viscosity of the rhyolite was about 6.2 log Pa·s for the less evolved rhyolite and 5.8 log Pa·s for the evolved rhyolite. Magma viscosities calculated using the Einstein-Roscoe question suggest the evolved magma has a slightly higher viscosity than the less evolved magma (7.0 log Pa·s in the evolved magma vs 6.7 log Pa·s in the less evolved magma) because of higher phenocryst content. Fluorine lowered the melt viscosity, though not by a significant amount (less than 0.5 log units at 1.7 wt% F). Partition coefficients for 32 elements have been calculated for biotite, for 21 elements for sanidine and plagioclase, and for 6 elements for quartz, using data acquired by laser ablation inductively coupled plasma mass spectrometry. Partition coefficients for feldspars in the Spor Mountain rhyolite are generally higher than other silicic magmas, and lower for biotite. Beryllium is one of the most incompatible trace elements in the Spor Mountain rhyolite, with a bulk partition coefficient <0.1. Volatile content of the melt (specifically F), melt composition, and the low temperature of crystallization act as the major controls of trace element partitioning. Trace element models using these partition coefficients suggests that crystal fractionation is the dominant magmatic enrichment process within the rhyolite, requiring ~45% crystallization (f = 55%) of the observed phenocrysts to get compositions from the less evolved to evolved rhyolite. Accumulation of batches of melt formed by different degrees of partial melting cannot explain the great depletion of compatible elements.
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Foster, Pedro Luiz Luppi [UNESP]. "Geologia e petrologia do Maciço Palanqueta, Mina Bom Futuro, Rondônia." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/144675.
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Topázio granitos são rochas ácidas ultrafracionadas que ocorrem sob a forma de stocks, cúpolas ou diques em suítes graníticas pós-orogênicas ou anarogênicas, e são caracterizadas por seu enriquecimento extremo em flúor, associação com elementos litófilos e relação direta com muitos depósitos primários de metais raros (ex. Sn, W, Ta e Nb) encontrados pelo mundo. A mina Bom Futuro localiza-se no município de Ariquemes, região centro-norte de Rondônia, e é umas das maiores produtoras de estanho do país e congrega dois morros contíguos denominados Bom Futuro e Palanqueta, este último sendo o representante em superfície do Maciço Palanqueta. No Maciço Palanqueta são reconhecidas 5 fácies graníticas, sendo 4 delas topázio granitos: biotita-álcali-feldspato-granito equigranular, topázio-zinnwaldita-álcali-feldspato-granito equigranular, topázio-zinnwaldita-álcali-feldspato-granito porfirítico, topázio-zinnwaldita-álcali-feldspato-granito pórfiro e topázio-zinnwaldita-álcali-feldspato-granito miarolítico, além de diques de aplito, veios de pegmatito e veios e pipes de greisen mineralizados em cassiterita. Os veios pegmatíticos encontram-se cortando os diques de aplito e estes as demais fácies graníticas. As relações de contato entre as fácies graníticas é brusca, mas só é identificada relação de idade entre as fácies topázio-zinnwaldita-álcali-feldspato-granito porfirítico e topázio-zinnwaldita-álcali-feldspato-granito pórfiro. As características de campo, petrográficas e geoquímicas do Maciço Palanqueta permitem classifica-lo como um maciço granítico multifásico, intraplaca, tipo A e integrante peraluminoso da Suíte Granitos Últimos de Rondônia. Apesar de cronologicamente correlatos a seguinte ordem para a colocação das fácies graníticas é proposta: biotita-álcali-feldspato-granito equigranular topázio-zinnwaldita-álcali-feldspato-granito equigranular topázio-zinnwaldita-álcali-feldspato-granito porfirítico topázio-zinnwaldita-álcali-feldspato-granito miarolítico topázio-zinnwaldita-álcali-feldspato-granito pórfiro. O Maciço Palanqueta ainda não possui seus limites físicos definidos, bem como sua variação faciológica em seção, o que implica na possibilidade de potencial metalogenético em profundidade, em acordo com outros exemplos de topázio granitos encontrados na literatura.
Topaz granites are acidic ultrafracionated rocks that occur in the form of stocks, domes or dykes in granitic post-orogenic or anarogenic suites, and are characterized by their extreme enrichment in fluorine, association with lithophile elements and direct relationship with many primary deposits of rare metals (eg. Sn, W, Ta and Nb) found around the world. The Bom Futuro mine is located in the county of Ariquemes, north-central region of Rondonia State, and is one of the largest tin producer in the country and brings together two adjacent hills called Bom Futuro and Palanqueta, the last one being the representative surface of the Palanqueta massif. At the Palanqueta massif are recognized 5 granitic facies, 4 of them of topaz granites: equigranular biotite-alkali-feldspar granite, equigranular topaz-zinnwaldita-alkali-feldspar granite, porphyritic topaz-zinnwaldita-alkali-feldspar granite, porphyry topaz-zinnwaldita- alkali-feldspar granite and miarolitic topaz-zinnwaldita-alkali-feldspar granite, and aplite dikes, pegmatitic veins and veins and pipes of greisen mineralized in cassiterite. The pegmatite veins are cutting the aplite dykes and these all the other granitic facies. The contact relationships between the granitic facies is abrupt, but age relationship are only identified between the porphyritic topaz-zinnwaldita-alkali-feldspar granite and porphyry topaz-zinnwaldita-alkali-feldspar granite facies. The field, petrographic and geochemical data of Palanqueta massif allow classifies it as a within plate, A type, peraluminous. multifacies granitic massif, and member of the Younger Granites of Rondonia Suite. Although chronologically related the following order for placement of the granitic facies is proposed: biotite alkali-feldspar granite equigranular topaz-zinnwaldita-alkali-feldspar granite equigranular topaz-zinnwaldita-alkali-feldspar granite porphyry topaz-zinnwaldita -álcali-feldspar granite miarolítico topaz-zinnwaldita-alkali-feldspar granite porphyry. The Palanqueta massif does not have its physical boundaries defined, as well as their facies variation in vertical section, which implies the possibility of depth metallogenic potential, in accordance with other examples of topaz granites found in the literature.
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Srivastava, Anurag. "Comparison of Two Algorithms for Removing Depressions and Delineating Flow Networks From Grid Digital Elevation Models." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34268.
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Digital elevation models (DEMs) and their derivatives such as slope, flow direction and flow accumulation maps, are used frequently as inputs to hydrologic and nonpoint source modeling. The depressions which are frequently present in DEMs may represent the actual topography, but are often the result of errors. Creating a depression-free surface is commonly required prior to deriving flow direction, flow accumulation, flow network, and watershed boundary maps. The objectives of this study were: 1) characterize the occurrence of depressions in 30m USGS DEMs and assess correlations to watershed topographic characteristics, and 2) compare the performance of two algorithms used to remove depressions and delineate flow networks from DEMs.
Sixty-six watersheds were selected to represent a range of topographic conditions characteristic of the Piedmont and Mountain and Valley regions of Virginia. Analysis was based on USGS 30m DEMs with elevations in integer meters. With few exceptions watersheds fell on single 7.5minute USGS quadrangle sheets, ranged in size from 450 to 3000 hectares, and had average slopes ranging from 3 to 20 percent. ArcView (3.1) with the Spatial Analyst (1.1) extension was used to summarize characteristics of each watershed including slope, elevation range, elevation standard deviation, curvature, channel slope, and drainage density. TOPAZ (ver 1.2) and ArcView were each used to generate a depression-free surface, flow network and watershed area. Characteristics of the areas 'cut' and 'filled' by the algorithms were compared to topographic characteristics of the watersheds. Blue line streams were digitized from scanned USGS 7.5minute topographic maps (DRGs) then rasterized at 30 m for analysis of distance from the derived flow networks.
The removal of depressions resulted in changes in elevation values in 0 - 11% of the cells in the watersheds. The percentage of area changed was higher in flatter watersheds. Changed elevation cells resulted in changes in two to three times as many cells in derivative flow direction, flow accumulation and slope grids. Mean fill depth by watershed ranged from 0 to 10 m, with maximum fill depths up to 40 m. In comparison with ArcView, TOPAZ, on average affected 30% fewer cells with less change in elevation. The significance of the difference between ArcView and TOPAZ decreased as watershed slope increased. A spatial assessment of the modified elevation and slope cells showed that depressions in the DEMs occur predominantly on or along the flow network. Flow networks derived by ArcView and TOPAZ were not significantly different from blue line streams digitized from the USGS quadrangles as indicated by a paired t test. Watershed area delineated by ArcView and TOPAZ was different for almost all watersheds, but was generally within 1%.
Conclusions from this study are: 1) The depressions in 30 m DEMs can make up a significant portion of the area especially for flatter watersheds; 2) The TOPAZ algorithm performed better than ArcView in minimizing the area modified in the process of creating a depressionless surface, particularly in flatter topography; 3) Areas affected by removing depressions are predominantly adjacent to the stream network; 4) For every elevation cell changed, slopes are changed for two to three cells, on average; and 5) ArcView and TOPAZ derived flow networks closely matched the blue line streams.Master of Science
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Nelson, Jennifer. "Geology, Geochemistry, and Geochronology of the Nathrop Volcanics: A Comprehensive Look at the History and Formation of Ruby and Sugarloaf Mountains." Bowling Green State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1626900507074039.
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Yukihara, Eduardo Gardenali. "Desvendando a cor e a termoluminescência do topázio: um estudo dos defeitos e processos termicamente e opticamente estimulados no cristal natural." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/43/43131/tde-16012012-102949/.
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O topázio [Al2SiO4(F,OH)2] é mais freqüentemente encontrado na natureza na forma incolor, a partir do qual gemas azuis vêm sendo produzidas comercialmente através da aplicação de radiação ionizante seguida de tratamentos térmicos. O topázio também exibe termoluminescência (ou luminescência termicamente estimulada) relativamente intensa, que é a luz emitida por cristais previamente irradiados durante o aquecimento e representa a base para a aplicação de muitos cristais naturais e artificiais em dosimetria e datação. Nos últimos quarenta anos, um período de intenso estudo de vários materiais termoluminescentes, raros são os resultados relatados sobre a termoluminescência do topázio e, apesar de alguns esforços para entender a cor do cristal, os defeitos que participam tanto do mecanismo de emissão termoluminescente quanto do bem sucedido tratamento de melhoria de cor usado comercialmente não estão bem identificados. Neste trabalho foram estudadas as propriedades termoluminescentes do topázio e sua relação com o processo de produção de cor usando radiação ionizante. A termoluminescência foi investigada com três objetivos principais: caracterização básica, determinação de sua adequabilidade para aplicações em dosimetria e como uma ferramenta para o estudo dos processos de relaxação no sólido. Para entender os processos que ocorrem no cristal e determinar os possíveis defeitos envolvidos, além da termoluminescência, o material foi também estudado usando as seguintes técnicas: absorção óptica, fotoluminescência, ressonância paramagnética eletrônica, condutividade termicamente estimulada, luminescência e condutividade opticamente estimulada, fluorescência de raios X, etc. Baseado nos resultados experimentais e na solução numérica das equações de taxa para um sistema de múltiplas armadilhas interativas, propomos um modelo de termoluminescência que é capaz de explicar a maioria das propriedades observadas no cristal tais como a resposta com a dose linear-supralinear-saturação e a ausência de sensibilização, a particular resposta com a dose da condutividade termicamente estimulada, a cinética de formação da cor, a estabilidade da cor, etc. Além disso, a correlação entre os resultados de ressonância paramagnética eletrônica, absorção óptica e termoluminescência sugere que os defeitos AlO44-, Ti3+ e PO44- estão envolvidos no mecanismo de produção de cor e da termoluminescência.Topaz [Al2SiO4(F,OH)2] is most frequently found in nature in the colourless form, from which blue gems have been commercially produced applying colour enhancement treatments with ionising radiation followed by annealing. Topaz also exhibits relatively intense thermoluminescence (or thermally stimulated luminescence), which is the light emitted by previously irradiated materials during heating and represents the basis for application of many natural and artificial crystals in dosimetry and dating. In the last forty years, a period of intense study of plenty thermoluminescent materials, results on the thermoluminescence of topaz have seldom been reported and, in spite of some efforts to understand the colour of the crystal, the defects participating both in the mechanism of thermoluminescence emission and in the commercially successful colour enhancement treatments are not well identified. In this work the thermoluminescence properties of topaz and its relation to the process of colour production using ionising radiation were studied. Thermoluminescence was investigated with three main objectives: basic characterisation, determination of its suitability for dosimetric applications and as a tool for studying the relaxation processes in the solid. In order to understand the processes occurring in the crystal and to determine the possible defects involved, in addition to thermoluminescence, the material was also studied using the following techniques: optical absorption, photoluminescence, electron paramagnetic resonance, thermally stimulated conductivity, optically stimulated luminescence and conductivity, X-ray fluorescence, etc. Based on the experimental results and on the numerical solution of the rate equations for a multiple trap interactive system, we propose a model of thermoluminescence which is able to explain most of the properties observed in the crystal as, for example, the linear-supralinear-saturation dose response of thermoluminescence and the absence of sensitisation, the particular dose response of the thermally stimulated conductivity, the kinetic of colour formation, the thermal stability of colour, etc. Besides, the correlation between the electron paramagnetic resonance, optical absorption and thermoluminescence results suggest that the defects AlO44-, Ti3+ and PO44- are involved in the mechanism of colour production and in the thermoluminescence.
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SOUZA, DIVANIZIA do N. "Caracterizacao do topazio natural para aplicacoes dosimetricas na faixa terapeutica." reponame:Repositório Institucional do IPEN, 2002. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11074.
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IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Monnier, Loïs. "Utilisation de la signature LA-ICPMS des quartz et des micas pour la reconstitution du fonctionnement d'un système magmatique et hydrothermal polyphasé. Application au complexe Sn-W d'Echassières (Massif central, France)." Thesis, Toulouse 3, 2018. http://www.theses.fr/2018TOU30368.
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La zone d'Echassières (Massif Central) concentre un grand nombre de minéralisations magmatiques (Sn, Li, Ta, Nb) et hydrothermales (W, Sn, Sb) en quantité économique ou sub-économique. Les nouvelles données minéralogiques et inclusions fluides des différentes paragenèses hydrothermales de la zone, les signatures chimiques en éléments traces de plusieurs minéraux stratégiques (principalement le quartz, mais aussi les micas et la topaze), traitées par un large panel d'analyses multivariées, et les nouvelles datations U-Pb sur rutile, zircon et monazite, ont permis de mettre en évidence trois évènements hydrothermaux minéralisateurs majeurs à trois époques de l'histoire varisque (anté-Tournaisien, Viséen et Westphalien). Ces minéralisations seraient reliées à trois évènements magmatiques distincts, présentant des signatures en métaux spécifiques, mais induisant tous trois la cristallisation de wolframiteThe Echassières area in the French Massif Central hosts a large number of economic to sub-economic magmatic (Sn, Li, Ta, Nb) and hydrothermal (W, Sn, Sb) mineralizations. This thesis produced new mineralogical and fluid inclusion data from various of the W-Sn mineralized hydrothermal systems, studied the trace chemical signature of several strategic gangue minerals (mostly quartz, but also micas and topaz) and processed the data using a spectrum of multivariate statistical approaches, obtained new U-Pb dating on rutile, zircon and monazite. Integration of all results made it possible to recognize the occurrence of three major mineralizing hydrothermal events in this region, which took place during three distinct periods of the variscan orogenic cycle (pre-Tournaisian, Visean and Westphalian). These mineralizations could be related to the intrusion of three distinct magmatic bodies, each with a specific paragenesis, yet, all leading to wolframite and cassiterite crystallization
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Oliveira, Marcos Ronaldo Ramos de. "Correntes de despolarização termicamente estimuladas: topázio e vidros soda-lime." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-19032014-113422/.
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Esta dissertação poderia ser dividida em duas partes, sem que houvesse prejuízo para o seu entedimento: uma tratando do topázio natural (Al IND.2 SiO IND.4[F, OH] IND.2) e outra, a respeito dos vidros silicatos tipo soda-lime (SiO IND.2+CaO+Na IND.2 O). Em ambas se procura contribuir para o estudo de defeitos com algumas técnicas experimentais, mais enfaticamente as correntes de despolarização termicamente estimuladas (CDTE). Com relação ao topázio, há diversos estudos tratando de sua termoluminescência (TL) e de possíveis aplicações no que tange ao seu emprego como dosímetro termoluminescente. Procuramos complementar esses resultados com medidas de CDTE, técnica que ainda não havia sido utilizada para este material. Localizamos no topázio três bandas de CDTE, porém os resultados não são conclusivos no que se refere às origens dessas bandas. Em parte porque temos consciência de que os resultados variam bastante quando se estudam amostras naturais, com composições que variam dentro de um mesmo pedaço de cristal. No que diz respeito aos vidros soda-lime, o estudo foi mais abrangente. Há várias trabalhos no sentido de se conhecer melhor os efeitos causados pela irradiação de vidros silicatos. Acredita-se que o sódio desempenhe um papel fundamental nas principais mudanças processadas nesse material após irradiação gama. Assim, este estudo procurou comparar os resultados de TL e CDTE, além de absorção óptica, de vidros soda-lime com diferentes concentrações de Na POT.+ e K POT.+. Ao que tudo indica os processos responsáveis pela TL e CDTE dependem da relação entre as concentrações desses íons. Verificaram-se também variações com a taxa de dose, e os efeitos de tratamentos térmicos para situações onde um ou outro íon prevalece.This work could be split in two different parts without impairment understanding. One of them, on natural topaz (Al2SiOdF,OH] 2) and the other on soda-lime silicate (SLS) glasses (Si02 + CaO + Na20) . In both of them we intend to contribute with more information on their defect composition, using some experimental techniques, especially the so called thermally stimulated depolarization currents (TSDC) . There are many surveys on topaz thermoluminescence (TL) and the possibility of its use as a TL dosimeter. So, one of the purposes of this study was to make a contribution with a technique not used so far with such material. We have detected three TSDC peaks. The results are not conclusive about the origin of those peaks, in part because we are dealing with a natural material whose composition can vary even within the same piece of crystal. As the SLS glasses, the study was more comprehensive. There are plenty of papers on irradiation effects in silicate glasses and attempts to understand the mechanisms responsible for them. It is believed that sodium plays a fundamental role in the main modifications caused by gamma irradiation of these glasses. In addition, this study attempts to compare the TL and TSDC results in SLS glasses with different concentrations of Na+ and K+. From our observations, the processes responsible for both TL and TSCD peaks depend on the relative concentrations of those ions. Furthermore, variations on the signals were also noticed; depending on the irradiation rate and on the thermal treatments performed, in samples where one or another ion prevails.
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Araujo, Fernando Prado. "O leucogranito Inhandjara: um exemplo de diferenciação magmato-hidrotermal na província Granítica Itu, SP (Brasil)." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/44/44143/tde-10092018-133358/.
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O Leucogranito Inhandjara é um pequeno e diferenciado stock Ediacarano (~570 M.a.) que constitui a borda nordeste do Batólito de Itu (estado de São Paulo, SE Brasil), um corpo rapakivi tipo A, composto principalmente por quatro intrusões (Indaiatuba, Salto, Itupeva e Cabreúva). O stock aflora como granitos hololeucocráticos, com teores radiométricos diferenciados (mais enriquecidos em Th e U do que as unidades vizinhas). Ele apresenta as maiores altitudes da região, sendo separado das outras unidades graníticas por um cinturão de gnaisses do embasamento. É constituído por dois litotipos: (1) monzogranito inequigranular a porfirítico com biotita, apresenta megacristais de feldspato potássico em uma matriz de granulação média a grossa; e (2) álcali-feldspato granito equigranular médio a fino, definido como a fácies mais evoluída, consistindo de albita subédrica (An<5) e quartzo, feldspato potássio e Li-siderofilita anédricos. Como fases magmáticas acessórias, apresenta fluorita, topázio, zircão, ilmenita e columbita-tantalita. O Leucogranito é metaluminoso do tipo A (subtipo A2), com caráter alcali-cálcico a alcalino, da série ferroana. Ele apresenta natureza reduzida, sendo classificado como da série ilmenita. As fácies apresentam enriquecimento progressivo em SiO2, Al2O3, Na2O, F, Cs, Rb, Nb, Ta e Y, enquanto os teores de TiO2, Fe2O3, MgO, CaO, Sr, Ba e Zr tendem a diminuir em direção ao Topázio Granito. Para os elementos terras raras (ETR), a fácies evoluída apresenta ligeiro enriquecimento nos elementos pesados, com conteúdo ETRTOTAL em torno de 150 ppm e razão (La/Yb)N de 0,6. Apresenta um padrão quase retilíneo quando normalizada por condrito, com forte anomalia negativa de Eu (Eu/Eu* = 0,003), se destacando das demais unidades do Batólito Itu. Análises químicas de zircão corroboram diretamente com o modelo de diferenciação, apresentando composição enriquecida em Hf, Y, Nb, Th e U nas bordas de cristais no Biotita Granito e por todos cristais do Topázio Granito, o que pode indicar cristalização tardia em presença de fase fluida. O stock apresenta evidências de intenso metassomatismo, principalmente albitização pervasiva e greisenização fissural, onde a paragênese de muscovita com Li, quartzo e clorita (± fluorita) ocorre associada a sulfetos disseminados (pirita, esfalerita e galena, ± calcopirita e molibdenita). O processo de alteração também afetou as rochas gnáissicas encaixantes, transformando-as em corpos de topázio-Li micas-quartzo greisen, associados a veios de quartzo-topázio mineralizados com hübnerita (wolframita rica em Mn) e cassiterita. Portanto, o Leucogranito de Inhandjara apresenta evidências mineralógicas e químicas de forte diferenciação, resultante da cristalização de um magma tardio, enriquecido em fases voláteis e elementos incompatíveis e acentuada pela interação com fluidos hidrotermais ricos em F exsolvidos do magma. Essas características colocam o stock no espectro mais evoluído dentro do Batólito Itu, relacionando-o com os processos de mineralização em metais raros (Nb-Ta-W-Sn) presentes na área da antiga Mina de Inhandjara.The Inhandjara Leucogranite is a small and differentiated Ediacaran stock (ca 570 Ma) that constitutes the northeaster border of the Itu Batholith (São Paulo state, SE Brazil), an A-type rapakivi body, composed of four main intrusions (Indaiatuba, Salto, Itupeva and Cabreúva). The stock outcrops as hololeucocratic granites, with distinguished radiometric contents (more enriched in Th and U than the surrounding units). It presents the highest altitudes of the region, occurring separated from the other granitic plutons by a belt of basement gneisses. It is made of two main units: (1) inequigranular to porphyritic biotite-bearing monzogranite, with potassium feldspar megacrysts in a medium to coarse-grained matrix; and (2) medium to fine-grained equigranular alkali feldspar granite, defined as the most evolved facies, consisted of subhedral albite and anhedral quartz, potassium feldspar and Li-bearing siderophyllite. As accessory magmatic phases, it shows fluorite, topaz, zircon, ilmenite and columbite-tantalite. The Leucogranite is metaluminous of A-type (A2 subtype), with alkali-calcic to alkalic character, from the ferroan series. It presents reduced nature and is classified into the ilmenite series. The facies show progressive increase of SiO2, Al2O3, Na2O, F, Cs, Rb, Nb, Ta e Y, while contents of TiO2, Fe2O3, MgO, CaO, Sr, Ba e Zr tend to decrease to the alkali-feldspar granite. For the rare earth elements (REE), the evolved facies shows slight enrichment in the heavy elements, with REETOTAL content around 150 ppm and (La/Yb)N ratio of 0.6. It displays an almost flat pattern in chondrite-normalized plots, with strong negative Eu anomaly (Eu/Eu* = 0.003), highlighting itself from the other units from the Itu Batholith. Zircon chemical analyses directly corroborate to the differentiation model, presenting composition enriched in Hf, Y, Nb, Th and U at the crystal borders in biotite granite and throughout the crystals of the alkali-feldspar granite, what may indicate late crystallization in the presence of fluid phase. The stock shows evidences of intensive metasomatism, mainly as pervasive albitisation and fissure to pervasive greisenisation, where the paragenesis of Li-bearing muscovite, quartz and chlorite (± fluorite) occurs associated with disseminate sulphides (pyrite, sphalerite and galena, ± chalcopyrite and molybdenite). The alteration process also affected the gneissic country rocks, transforming them to topaz-Li-bearing micas-quartz greisen bodies, associated with quartz-topaz veins mineralised with hübnerite (Mn-rich wolframite) and cassiterite. Therefore, the Inhandjara Leucogranite presents mineralogical and chemical evidences of strong differentiation, resulting from the crystallization of a late magma, enriched in volatile phases and incompatible elements, and enhanced by interaction with exsolved F-rich hydrothermal fluids. Those characteristics place the stock in the most evolved spectrum inside the Itu Batholith, relating it with the rare-metal (Nb-Ta-W-Sn) mineralization processes which occur in the area from the old Inhandjara Mine.
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Ranorosoa, Nadine. "Etude mineralogique et micromonometrique des pegmatites du champ de la sahatany (madagascar)." Toulouse 3, 1986. http://www.theses.fr/1986TOU30210.
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Le champ pegmatitique de la sahatany, d'age parafricain, se situe dans un ensemble de metasediments a tendances evaporitiques: les pegmatites potassiques et les pegmatites sodolithiques. Etude microthermometrique des inclusions fluides dans le quartz, la topaze et le spodumene. Ces fluides indiquent des conditions hydrothermales de temperatures elevees autour de 350-500**(o)c pour une pression de 2000-3000 bars. Les inclusions solides peuvent constituer des residus du stage magmatique
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Hernandez, Brett M. "Physical Volcanology, Kinematics, Paleomagnetism, and Anisotropy of Magnetic Susceptibility of the Nathrop Volcanics, Colorado." Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1400251995.
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Luangpraseuth-Prosper, Alix. "Topaz1, un gène indispensable à la spermatogenèse." Thesis, Evry-Val d'Essonne, 2015. http://www.theses.fr/2015EVRY0013/document.
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Cette thèse décrit pour la première fois le rôle indispensable du gène Topaz1 pour une spermatogenèse correcte chez la souris. Ce gène est spécifique des cellules germinales et possède deux domaines conservés: CCCH et PAZ. Afin d'étudier le rôle de Topaz1, nous avons généré un modèle murin dépourvu de ce gène. Les mâles Topaz1-/- sont stériles dû à un arrêt de la spermatogenèse lors de la première division méiotique. Le poids des testicules mutants est diminué après la première vague de la spermatogenèse comparé à des testicules normaux. Histologique, les différences entre testicules Topaz1-/- et +/+ apparaissent entre 15 et 20 jours après la naissance. Cette déficience en TOPAZ1 induit une absence de cellules germinales haploïdes et une augmentation de l’apoptose, suggérant un arrêt de la spermatogenèse au cours de la première division de méiose. Cet arrêt n’est pas dû à un défaut de formation du complexe synaptonémal ni à une dérégulation de l’inactivation transcriptionnelle des chromosomes sexuels. De plus, malgré la présence d'un domaine PAZ dans la protéine TOPAZ1, son absence n'induit pas une dé-répression des rétrotransposons. Les testicules de ces souris Topaz1-/-, comparés à des animaux normaux, présentent des transcriptomes perturbés avec notamment la dérégulation de l'expression de plusieurs gènes inconnus et d'ARNs non codants longs. Cette étude a permis de démontrer que TOPAZ1 est indispensable à la spermatogenèse de souris. En plus d’être un bon gène candidat pour des cas d’infertilités azoospermiques non obstructives chez l’Homme, Topaz1 pourrait ouvrir des nouveaux champs d'investigations impliquant de nouvelles voies de régulation de la spermatogenèseThis thesis describes for the first time the crucial role in spermatogenesis of the Topaz1gene in mice. This gene is germ cells-specific and contains two conserved domains: CCCH and PAZ. In order to study the role of Topaz1, our laboratory has generated a mouse model deleted for this gene. Topaz1-/- males are infertile because of an arrest of spermatogenesis during the first meiotic division. Mutant’s testicular weight is reduced after the first wave of spermatogenesis, compared with normal testis. Histologically, differences between Topaz1-/- and +/+ testes appear between 15 and 20 days after birth. Deletion of Topaz1 causes a lack of haploid germ cells and an increase of apoptosis, suggesting an interruption of spermatogenesis during the first meiotic division. This meiotic arrest is not caused nor by a synaptonemal complex formation defect nor by a misregulation of the MSCI (Meiotic Sex Chromosomes Inactivation). Despite the PAZ domain contained in the TOPAZ1 protein, its invalidation does not activate retrotransposon expression. Topaz1-null testes reveal disturbed transcriptomes with a misregulation of several unknown genes and long non-coding RNAs expression. These results suggest a new regulation pathway of spermatogenesis, parallel and independent to the piRNAs pathway. This new pathway could implicate lncRNAs regulations. This study demonstrated the essential role of Topaz1in mice spermatogenesis. This gene is a good candidate for azoospermia non-obstructive infertility in men. Topaz1 could open new fields of investigation involving spermatogenesis new regulation pathways
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Pinto-Coelho, Cristina. "Évolution magmatique et hydrothermale du massif granitique de Serra-Branca-état de Goiás- Brésil : définition des processus d'altération post-magmatiques en liaison avec les minéralisations en Sn, Be et F." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL103N.
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La province stannifère de Goiás, dans la partie centrale du Brésil, comporte quatre zones (distinctions d'origine structurale, essentiellement), dénommées sous-provinces Tocantins, Paraná, Pirenopolis-Goianesia et Ipameri, et regroupent une vingtaine de massifs granitiques et plusieurs champs filoniens de pegmatites qui sont supposés les responsables d'importantes minéralisations stannifères (avec Nb, Ta, W, F et Be). Chacun de ces massifs a une identité géochimique bien spécifique et c'est donc davantage la convergence métallique (l'étain) plutôt qu'une réelle unité génétique qui caractérise la province stannifère de Goiás et ses massifs granitiques. Le massif granitique de Serra Branca est constitué d'un ensemble de faciès diversifiés, allant d'un granite à biotite, granite à deux micas, jusqu'à un granite à muscovite ; le faciès le plus évolué est représenté par un granite à topaze accessoire, rencontré dans la partie E du massif. L’intense différentiation du massif se fait de façon asymétrique en raison des processus d'altération tardi/post-magmatiques qui ont abouti à la formation d'une intense greisenisation de coupole qui atteint son sommet dans la partie orientale du massif, avec la formation de greisens massifs. L’importance relative des altérations tardi/post-magmatiques développées dans les différents faciès du massif, et d'ailleurs déjà bien présentes dans le granite è biotite, peut se traduire de façon chronologique par une albitisation, une greisenisation S. L. Et puis par une microclinisation. Les principaux minéraux d'intérêt économique liés à l'épisode de greisenisation: sont cassitérite, topaze et béryl. Les phases micacées des différents faciès granitiques et des greisens ont été également perturbées par l'action des phénomènes d'altération tardive. Les biotites, hétérogènes à l'intérieur d'un type granitique donné, sont néanmoins homogènes au niveau du cristal (pas de zonage cur-bordure) ; Al est en position octaédrique et sont donc alumineuses. Les micas blancs présentent un caractère phengitique marqué ; ils sont ferrifères, faiblement magnésiens et titanifères, moyennement fluorés et non lithinifères. Les alterations tardi/post-magmatiques subies par les termes granitiques du massif de Serra Branca ont modifié leur signature purement magmatique originelle. Les variations chimiques enregistrées sont davantage l'expression de ces modifications surimposées
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Couto, Maria Teresa Rodrigues. "A sátira nos contos de Tomaz de Figueiredo." Master's thesis, Universidade de Aveiro, 2007. http://hdl.handle.net/10773/2765.
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Mestrado em Estudos PortuguesesTomaz de Figueiredo é autor de romances, poesia, teatro e contos. A sua escrita, essencialmente ambivalente, é atravessada pelas isotopias do amor e da raiva. Amor pela família, a de sangue e a de coração, esta constituída pelos plebeus, mas nobres de carácter. Raiva pelos que personificam a ambiguidade hipócrita e a vileza humana. O trajecto vivencial do autor surge ficcionalmente transfigurado na voz dos narradores e das personagens que, nos contos, funcionam como seus duplos diegéticos, denunciando a dor e a solidão e justificando o seu dissídio com o mundo que não lhe permitiu o reencontro com o seu Bem perdido. Autocaracterizando-se como «um cavador de letras», deplora a escrita vazia e balofa. A observação da realidade inscrita na memória e iluminada imaginativamente é o pilar que sustenta a sua arte de contar. A sátira nos contos de Tomaz de Figueiredo cumpre a sua função moralizadora, mas é também, o elemento preferencial através do qual o autor veicula a sua revolta, oscilando entre os registos limítrofes da invectiva, da ironia, do humor, do sarcasmo e do grotesco. ABSTRACT: Tomaz de Figueiredo is a novelist, poet, playwright and short story writer. His essentially ambivalent fiction is dominated by the key-themes of love and wrath. Love is expressed towards his family, including both blood and affection ties. Wrath, on the other hand, is directed at those who personify hypocritical ambiguity and human villainy in general. The author’s biography is fictionally transfigured and he uses his narrators as mouthpieces, making them voice his own pain and solitude, as well as his never-ending conflict with a world that has prevented him from regaining his lost paradise. By portraying himself as a ploughman of words, the author deplores empty and trivial writing. Acute observation of reality, enlightened by memory and imagination, is the basis underlying his literary art. In Tomaz de Figueiredo’s short stories, satire fulfils a moralizing function but has also been elected as the crucial strategy the author resorts to in order to convey his revolt, thus encompassing the complementary tones of irony, humour, sarcasm and grotesque.
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Bouabsa, Lakhdar. "Intrusions granitiques à albite et topaze : Minéralisations stanno-wolframifères et altérations hydrothermales associées, l'exemple du hoggar central, Algérie." Nancy 1, 1987. http://www.theses.fr/1987NAN10329.
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Le présent travail met l'accent sur la dualité du magmatisme de cette région du Hoggar Central. Outre un granite banal à biotite (parfois amphibole) constituant l'ossature principale des granites post orogéniques (Taourirts), il est mis en évidence un type particulier de granite spécialisé à albite, topaze et protolithionite comme paragénèse I. Ce magmatisme évolué est sans liaison génétique avec le précèdent comme le soulignent les contacts intrusifs marqués par des stockscheiders et les discontinuités géochimiques au niveau des éléments majeurs et tracés. La liaison spatiale et génétique des altérations hydrothermales avec ce magmatisme spécialisé apparait évidente. Ces altérations affectent les différents termes magmatiques de la région ; Elles sont essentiellement lithinifères, fluorées (protolithionite, muscovité lithinifère, topaze et fluorine) et peuvent conduire à des phénomènes de convergence à partir des granites banaux à biotite. Les minéralisations SN-W, déjo exprimées de façon primaire dans les granites à albite - topaze, sont liées au développement de ces altérations greisénisantes fissurales
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Oliveira, Emanuela Dias de. "Apologia de Galileu por Tomaz Campanella : introdução e tradução." [s.n.], 2001. http://repositorio.unicamp.br/jspui/handle/REPOSIP/281749.
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Orientador: Carlos Arthur Ribeiro do NascimentoDissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciencias Humanas
Made available in DSpace on 2018-07-31T17:31:39Z (GMT). No. of bitstreams: 1 Oliveira_EmanuelaDiasde_M.pdf: 9042799 bytes, checksum: 57a5b43207d5ac98c494235e3e4ec8e3 (MD5) Previous issue date: 2001
Resumo: Esta dissertação apresenta uma tradução para a língua portuguesa da obra "Apologia de Galileu", de Tomás Campanella (1568-1639), a partir da edição bilingüe italiano-latim elaborada por Paolo Ponzio (Universidade de Bari). A proposta inicial foi organizar um texto em português a partir da versão italiana, no entanto, executou-se também um cotejamento pormenorizado com o original latino. A "Apologia" é um parecer teológico que discorre sobre a compatibilidade do sistema copernicano com a Sagrada Escritura. Sabe-se que, no século XVII, a interpretação literal dos escritos bíblicos, fortemente ancorada nas disposições do Concílio de Trento, incompatibilizava a filosofia da natureza, defendida por Galileu, com a Revelação bíblica. A obra apologética foi escrita em 1616, a pedido de um dos consultores do Conselho dos Cardeais ligados ao Índice, após a instauração de uma secreta ação inquisitória suscitada por públicas e privadas acusações lançadas contra Galileu e o sistema copernicano. Buscando introduzir uma obra pouco divulgada, intentou-se preparar a leitura da mesma a partir de uma "Apresentação do Texto", na qual aborda-se as circunstâncias em que a obra foi escrita, a estrutura da mesma, seu gênero literário e seus aspectos mais relevantes, além de um apêndice, no qual se apresenta a vida e as obras de Tomás Campanella. Esta dissertação visa contribuir para o enriquecimento do panorama geral quanto ao embate entre a doutrina teológica e as investigações acerca das ciências da natureza no século XVII, colaborar com a formação de uma biblioteca do século XVII em língua portuguesa e, ainda, apresentar ao público brasileiro o Tomás Campanella teólogo, amadurecido formador de opinião, dado que esse público, tendo em português apenas urna obra utópica, acaba por restringi-Io à alcunha de visionário
Abstract: This essay presents a translation ofthe work "Galileo's Apologia", by Tomas Campanella (1568-1639), into the Portuguese language from the bilingual Italian-Latin edition written by Paolo Ponzio (University of Bari). The original proposal was to organize a text in Portuguese from the Italian version, however a detailed comparison with the Latin original was also carried out. "Apologia" is a theological report on the compatibility of the Copernican system with the Holy Writ. It is known that, in the XVIIth century, the literal interpretation of the biblical books, strongly based on definitions of the Council of Trent, made the natural philosophy, supported by Galileo, incompatible with the biblical Revelation. The apologetic work, written in 1616, was requested by a consultant belonging to the Cardials Council related to the Index Librorum Prohibitorum after the instauration of a secret inquisitional action roused by public and private accusations against Galileo and the Copernican system. Aiming at introducing a little divulged work, the preparation for reading such material was meant to be done from a "Presentation Text", where the circumstances in which the text was written are approached, as well as its structure, literary style and its most relevant aspects, besides na appendix in which the life and works of Tomas Campanella are presented. The objects of this essay are: i) to enrich the general controversial panorama dividing the theological doctrine and the investigations concerning the natural sciences in the XVII th century, ii) to contribute with the set up of aXVll th century Portuguese language libraty and also iii) to present the mature opinion-maker theologue, Tomas Campanella, to the Brazilian public, given that such public, having only one utopian work available in Portuguese, regards such author as a mere visionary
Mestrado
Mestre em Filosofia
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Zhao, Jiping. "Induction and mechanism of Brassica napus cv. Topas microspore embryogenesis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/nq20600.pdf.
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MacCormack, Sabine. "¿Inca o español? Las identidades de Paullu Topa Inca." Pontificia Universidad Católica del Perú, 2012. http://repositorio.pucp.edu.pe/index/handle/123456789/113531.
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Inca or Spanish? The Identities of Paullu Topa IncaPaullu Topa Inca tends to be described, in modern historiography, as a traitor to his own people. This judgement misrepresents the circumstances of his life as perceived during the sixteenth century. During his own life time, he was indeed respected by many Spaniards, but Incas and andean people also regarded him as a man of very great authority and worth. After his death, the complex events of the invasion and conquest in which Paullu Topa Inca participated were streamlined into a smooth narrative that fitted in with the perspective of the winning side in the civil wars of the conquest period, and that became canonical once the viceregal state was established. The old men who at century’s end remembered Paullu Topa Inca did so as part of their own memories of their childhood and youth.En la historiografía moderna, Paullu Topa Inca aparece como traidor de su gente. Este juicio da una imagen falsa de las circunstancias de su vida como la representaron sus contemporáneos. Durante su existencia, muchos españoles lo respetaron, y los incas y la gente andina lo miraron como hombre de gran autoridad y valía. Después de muerto, los sucesos complejos de invasión y conquista en los que Paullu Topa Inca participó fueron transformados en una narrativa llana y sencilla, según las ideas del partido victorioso en las guerras civiles. Esta narrativa se hizo canónica, una vez que se estableció el Estado virreinal. Los viejos que recordaban a Paullu Topa Inca lo hicieron en el contexto de sus propias memorias de niñez y juventud.
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Ramesar-Fortner, Nicole S. "Physiological control of shoot apical meristem formation in Brassica napus cv Topas." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape7/PQDD_0020/MQ55286.pdf.
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Rytel, Alexander L. "Hydrous Mineral Stability in Earth’s Mantle: Implications for Water Storage and Cycling." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1452168411.
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Topak, Ali Eray [Verfasser], and T. [Akademischer Betreuer] Zwick. "A Novel Millimeter-Wave Dual-Fed Phased Array for Beam Steering / Ali Eray Topak. Betreuer: T. Zwick." Karlsruhe : KIT-Bibliothek, 2013. http://d-nb.info/1061069184/34.
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Bouabsa, Lakhdar. "Intrusions granitiques à albite-topaze minéralisations stanno-wolframières et altérations hydrothermales associées, l'exemple du Hoggar Central, Algérie." Grenoble : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37593760k.
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Topuz, Fuat [Verfasser], Martin [Akademischer Betreuer] Möller, and Jürgen [Akademischer Betreuer] Groll. "Functional star-type polyethylene glycol copolymers for hydrogels and biohybrid gels / Fuat Topuz ; Martin Möller, Jürgen Groll." Aachen : Universitätsbibliothek der RWTH Aachen, 2015. http://d-nb.info/1127232029/34.
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Lay, Victoria F. "The affect of ash chemistry and deposits from co-firing biomass and coal in power plant systems." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/32154.
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Hemp, eucalyptus, coal, hemp and coal blended fuel, and eucalyptus and coal blended fuel were ashed and then heat treated for 1 hour at temperatures from 600-1100°C. X-ray diffraction analysis indicated reactions between the phases present after initial ashing of the fuel showed biomass-biomass, biomass-coal and coal-coal interactions. Two phase systems were identified as dominant in the biomass and coal ash blends, these were CaO-MgO-SiO2 and CaO-Al2O3-SiO2. The phases identified in these systems have also been identified in ceramics produced at high temperatures which have similar compositions to the ash matrix of the laboratory synthesised ash; this indicates that phase diagrams can be powerful tools in phase formation prediction. Structures identified as trichomes (phosphate-silicate structures with melting points above 1100°C) from the hemp fuel which had not decomposed were present in both the hemp ash and the hemp and coal ash. The composition determined by Energy-dispersive X-ray spectroscopy analysis of laboratory synthesised ashes was also in agreement with the phases identified through X-ray diffraction. Hemp and coal, eucalyptus and coal, and eucalyptus ash samples (deposited, quenched, cyclone, and bottom ash) removed from a full scale 1MWth combustion rig were analysed. Phase composition of the fly ash samples are similar to those identified in the analagous samples produced in the laboratory with several of the same phases present; confirming that laboratory testing is useful for the predictions of phases present on the industrial scale combustion rig. Particle morphology is one of the largest differences between the laboratory scale tests and combustion rig samples. The dominant particle shape of fly ash particles removed from the combustion rig is spherical. These particles of characteristic shape are often referred to as plerospheres and cenospheres and were first identified in coal fly ash. The presence of the spheres in the combustion rig when only biomass (eucalyptus) is present indicates the formation mechanism of the particles is similar to that of coal. There are similarities between the chemical composition of the spheres which are solely of biomass origin and co-fired; it is likely that phase composition of the sphere and not the fuel origin contributes to the formation of the spheres. Phases identified in the bottom ash are similar to those identified in the fly ash. High temperature phases such as (e.g. Ca9MgK(PO4)7) ocur in the bottom ash suggesting that higher temperatures are reached in the bottom of the rig than in the flue gas. Analysis of 15Mo3 alloy corrosion coupons with fly ash deposited onto the surface, alongside the interactions between gas phases and coupons, deposits and coupons, and gas phases and deposits, showed that some oxidation/reduction of the metal had occurred. The presence vi of metal oxide flakes indicated corrosion. Oxidation of 15Mo3 alloy was observed in hemp and coal, and eucalyptus and coal combustion trials, likely due to the observed deposition of potassium chloride which has caused detachment of several scales. Between the metal-deposit interface, hematite whiskers were observed; magnetite octahedra were also present on the surface of scales. The phases present in the coupon deposit ash differ from those observed in the laboratory and fly ash due to the length of time spent in the high temperature environment. This indicates that some phases will not form until the deposits have built up and are in the furnace for an extended period of time. When the coupon samples were coated, fewer metal scales were observed meaning that the coatings are an affective method of corrosion reduction leading to an increased lifetime of boiler components. The dominant particle morphology present in the combustion rig is the cenospheres and plerospheres. The phases formed can be broadly catergorised into CaO-MgO-SiO2, CaO-Al2O3-SiO2, and K2O-Al2O3-SiO2 phases. Potassium chloride is observed in the laboratory ash and combustion rig ash indicating, alongside the presence of metal oxide scales, that the fuel blends are likely to lead to corrosion during combustion.
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Chadourne, Manon. "La suppression de Topaz1 perturbe la méiose et l'expression des ARN non-codant longs testiculaires au cours de la spermatogenèse murine. Topaz1, an Essential Gene for Murine Spermatogenesis, Down-Regulates the Expression of Many Testis-Specific Long Non-Coding RNAs." Thesis, université Paris-Saclay, 2021. http://www.theses.fr/2021UPASL021.
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Topaz1 (pour Testis and Ovary specific PAZ domain gene 1) est un gène très conservé chez les vertébrés qui présente une expression spécifique dans les cellules germinales. La caractérisation du modèle murin dépourvu du gène Topaz1 a mis en évidence son rôle indispensable pour la fertilité mâle. Les souris mutantes présentent un arrêt de la spermatogenèse lors de la première division méiotique. Les spermatocytes Topaz1-/- bloqués en fin de prophase I de méiose présentent un défaut d’alignement des chromosomes le long de la plaque métaphasique. D'un point de vue histologique, les différences observées entre les testicules de souris Topaz1-/- et Topaz1+/+ apparaissent entre 15 (P15) et 20 (P20) jours après la naissance. Une première analyse transcriptomique par puce à ADN a montré que 10% des gènes dérégulés (DEGs) à P20 sont des ARN non codants longs (lncRNAs). Au cours de cette thèse, des analyses transcriptomiques à haut débit (RNAseq) ont été réalisées à P16 et P18 afin de mieux caractériser le phénotype testiculaire des souris dépourvues du gène Topaz1. Dès P16, le transcriptome testiculaire est perturbé et le nombre de DEGs est multiplié par 10 à P18. Des gènes associés au centrosome, centriole, à la dynamique des microtubules et à la spermatogenèse appartiennent aux voies moléculaires les plus perturbées. De plus, un quart des DEGs sont des lncRNAs. Trois d'entre eux, dérégulés à P16 et à P18, ont été étudiés par hybridation in situ et biologie moléculaire et sont spécifiques des cellules germinales. Puis une lignée de souris exempt d'un de ces lncRNA a été générée grâce à la technologie CripsR/Cas9. Ces animaux mutants se développent normalement et sont fertiles pour les deux sexes.Néanmoins, les souris mâles mutantes présentent une diminution de plus de 50% de la concentration de spermatozoïdes épipidymaires ainsi qu’une modification de paramètres de motilité par rapport à des souris sauvages. Des nouvelles analyses RNAseq ont été réalisées afin d'étudier le transcriptome testiculaire de ces souris. Elles mettent en évidence que ce lncRNA régule un nombre important de gènes codants pour les protéines (environ 80% des DEGs à P18). Là encore, certains d'entre eux régulent la dynamique des microtubules, la spermatogenèse et la génération des gamètes haploïdes.En conclusion, le gène Topaz1 murin est donc essentiel pour la mise en place d’un fuseau bipolaire en fin de prophase I de méiose et son absence empêche la première division méiotique. La dérégulation d’un nombre important de gènes codants pour des protéines du centrosome, des microtubules et de la spermatogenèse ainsi que la forte répression de l'expression de lncRNAs au sein du testicule murin laisse à penser que des complexes ARNs-protéines se forment au cours de la méiose.Dans cette étude, la suppression d'un de ces lncRNA ne perturbe pas la fertilité des souris bien que la concentration spermatique soit réduire de moitié. Chez l'homme, une telle baisse pourrait conduire à des infertilités masculines. Une mutation du gène Topaz1 chez l'homme pourrait aussi induire une azoospermie non obstructive. L'étude des complexes ARN-protéines pourrait représenter un nouveau champ d’investigation dans l’étude des infertilités et notamment de la régulation de la méioseTopaz1 (Testis and Ovary specific PAZ domain gene 1), a germ cell specific factor, is a highly conserved gene in vertebrates. The study of the Topaz1-inactivation mouse model demonstrated its essential role for male fertility. The absence of Topaz1 in mutant mice caused spermatogenesis arrest during the first meiotic division. Topaz1-/- spermatocytes, blocked at the end of meiotic prophase I, showed chromosome misalignment along the metaphase I plate. Histological experiments specified that the differences observed between Topaz1-/- and Topaz1+/+ mouse testes appeared between 15 (P15) and 20 (P20) days post-partum. Previously, transcriptomic analyses using a whole-genome expression array indicated that 10% of P20-deregulated genes (DEGs) were long non-coding RNAs (lncRNAs). During this thesis, high throughput transcriptomic analyses (RNAseq) were performed at P16 and P18 in order to better characterise the testicular phenotype of mice lacking the Topaz1 gene. From P16, the testicular transcriptome was disturbed and the DEGs number was multiplied by 10 at P18. Genes associated with centrosome, centriole, microtubule dynamics and spermatogenesis belonged to the most disturbed molecular pathways. Moreover, a quarter of DEGs were lncRNAs. Three of them, deregulated at P16 and P18, were studied by in situ hybridization and molecular biology techniques. They were germ cell specific. Thus, a new mouse model deleted for one of these lncRNAs was generated using CRISPR/Cas9 technology. These mutant mice developed normally and were fertile in both sexes. However, mutant male mice presented a more than 50% decrease in the epididymal sperm concentration as well as a change in motility parameters compared to wild-type mice. New RNAseq analyses were realised to study testicular transcriptome of these mice. These showed that this lncRNA regulates a large number of protein-coding genes (approximately 80% of the DEGs at P18). There again, some of them regulated microtubule dynamics, spermatogenesis and haploid gamete generation.In conclusion, this work shows that the murine Topaz1 gene is therefore essential for the establishment of the bipolar spindle during the transition from late prophase I to metaphase I and its absence prevents the first meiotic division. The deregulation of a significant number of protein-coding genes of the centrosome, microtubule movements and spermatogenesis, as well as the strong repression of lncRNAs expression within mouse testis, suggests that RNAs-proteins complexes are formed during meiosis.In this study, deletion of one of these lncRNA did not affect fertility in mice even though sperm concentration was halved. In men, such a decrease could lead to male infertility. A mutation of the Topaz1 gene in men could also induce non-obstructive azoospermia. The study of RNAs-proteins complexes could represent a new field of investigation in the understanding of infertility, particularly in meiotic regulation
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Souza, Leila Damiana Almeida dos S. "Missão do SAHY: Hãm ha Topa, yãymaih xix ayuhuk (Terra de Deus, índios e não-índios)." Instituto de Humanidades, Artes e Ciências, 2013. http://repositorio.ufba.br/ri/handle/ri/14591.
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Made available in DSpace on 2014-02-13T17:24:04Z (GMT). No. of bitstreams: 1 DISSERTAÇÃO. Leila Damiana A. Santos Souza.MISSÃO DO SAHY. Hãm ha Topa, yãymaih xix ayuhuk (2).doc: 11707904 bytes, checksum: a6e1ed07346c382310ff17df6b588570 (MD5)
RESUMO Este trabalho versa sobre os processos identitários de um grupo de descendentes indígenas da comunidade Missão do Sahy, distrito do Município de Senhor do Bonfim - BA. Foi realizada uma retomada histórica onde se buscaram aspectos que indicassem uma atribuição de características culturais aos descendentes de índios. O estudo da historiografia, juntamente com as narrativas orais dos moradores, voltou-se para os primeiros contatos dos europeus com os povos tradicionais brasileiros, passando pela situação dos índios no nordeste e na Bahia. Utilizamos formulações epistemológicas acerca da “misturação dos índios”, do hibridismo cultural e da diáspora. O enquadramento teórico ladeado pelo estudo de caso objetivou analisar a partir das narrativas como os processos de atribuição da identidade conduziram o (não) pertencimento étnico dos descendentes indígenas da Missão do Sahy. Foram utilizados, entre outros, autores como: Da Paz, Machado, Pacheco de Oliveira, Paula Caleffi, Canclini, Homi Bhabha e Stuart Hall. As análises qualitativas do estudo de caso foram possibilitadas pela relação dialógica entre pesquisadora e objeto de estudo a partir da valorização das respostas obtidas, assim, foi possível construir a imbricação da historiografia, dos pressupostos teóricos e das narrativas orais desde o primeiro capítulo do trabalho. Os resultados revelaram que aos indígenas diversas identidades foram atribuídas em diferentes épocas e contextos, essa atribuição gerou uma desconstrução das identidades que se deu por meio de um processo de “misturação” e pelo hibridismo cultural. Por outro lado, a luta e a emergência de grupos indígenas apontavam para a existência de um processo de constituição de identidades individual e coletiva, conquanto as investigações apontaram que também na Missão do Sahy esse processo ocorreu (ocorre). Foi por meio das formulações acerca da diáspora que se chegou à compreensão de que as novas identidades no plano cultural vêm se constituindo numa dinâmica de produção e autoprodução, onde os descendentes assumem não só o seu pertencimento, mas também buscam meios para se afirmarem como comunidade descendente dos índios Cariri e Paiaiás. Palavras-chave: Descendentes Indígenas. Diáspora. Hibridismo. Identidades.
RÉSUMÉ Ce travail s´agit de l´investigation sur les processus identitaires d´un groupe de descendants d´indigènes de la communauté appelée Missão do Sahy, dans un petit village situé dans la ville de Senhor do Bonfim, à l´état de Bahia, Brésil. Nous avons fait une description de les plus importantes moments de cette histoire, oú on a remarqué des aspects qui dénote l´attribution des caractéristiques culturelles aux descendants d´indigènes. L´étude de l´historiographie, avec les narratives orales des habitants, a mise-en-relief les premiers contacts des européens avec les peuples traditionnels brésiliens, notamment sur la situation des indigénes de la región Nordeste et de l´etat de Bahia. Nous avons utilisé de la pensée épistémologique de la “mixage des indigènes”, de l´hybridité culturelle et de la diaspora. La base theorique accompagné par l´étude de cas, a eut le but d´analyser, apartir des narratives, comment les processus d´attribution de l´identité ont conduit le (non) appartenance éthnique des descendants indigènes de la Missão do Sahy. Nous utilisons les contributions theoriques de Da Paz, Machado, Pacheco de Oliveira, Paula Caleffi, Canclini, Homi Bhabha e Stuart Hall, parmi d´autres. La realisation d´analyses qualitatives de l´étude de cas ont été possible à cause de la relation dialogique entre la chercheuse et l´objet d´étude apartir d´une valorisation de tous les réponses reçues. De cette façon, nous avons fait l´imbrication de l´historiographie, de la base théorique et des narratives orales depuis le premier partie du travail. Les resultats ont revelé que plusieurs identités étaient attribuée aux indigènes pendant des différentes époques et contextes. Cette attribution a creé une (dé)constrution des identités à travers d´un processus de “mixage” et par l´hybridisme culturelle. Par contre, la lutte et l´emergence des groupes indigenes ont souligné l´existence d´un processus de constitution d´identités au niveau individuel et collectif; cependant, l´investigation a montré que ce processus est arrivé (et arrive) aussi dans la Missão do Sahy. Il était à travers des réfléchissements sur la diaspora que ont a compris que les nouvelles identités au plan culturelle sont construit dans une dynamique de production e auto-production, oú les descendants affirment pas seulement leur appartennance, mais ils cherchent aussi des moyens pour s´affirmer comme une communauté descendent des indigènes Cariri e Paiaiás. Mots-Clés: Descendants d´indigènes. Diaspora. Hybridisme. Identités.
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Gervais, Carmen. "Actin filament organization and function in pollen development and induction of microspore embryogenesis of Brassica napus L. cv. Topas." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ42943.pdf.
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Bisson, Caroline. "Les pratiques évaluatives en mathématiques d'une enseignante oeuvrant auprès d'élèves en difficulté du primaire." Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/6867.
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Dans les dernières années, la didactique des mathématiques s’est intéressée aux pratiques enseignantes sans mettre les pratiques évaluatives au centre de leurs préoccupations. Pourtant, l’évaluation en mathématiques est une partie importante du travail des enseignantes et des enseignants du primaire qui sont appelés à déterminer les forces et les difficultés des élèves, particulièrement chez les élèves qui éprouvent des difficultés. Nous en savons donc très peu sur cette partie des pratiques enseignantes. Par ailleurs, des obstacles persistent pour les enseignantes et les enseignants concernant l’identification des élèves en difficulté en mathématiques puisqu’un flou persiste concernant la définition de ce qu’est un élève en difficulté. De plus, il est difficile d’identifier les sources d’erreurs des élèves puisqu’elles peuvent être multiples et que la posture de l’enseignante ou de l’enseignant peut influencer leur catégorisation. Ainsi, nous pouvons nous demander ce que sont les pratiques évaluatives en mathématiques auprès des élèves en difficulté dans un tel contexte.
Afin de mener à bien ce questionnement sur les pratiques évaluatives en mathématiques, l’évaluation est associée à un processus, puis les pratiques évaluatives représentent les actions menées par l’enseignante ou l’enseignant durant ce processus et elles sont circonscrites à l’intérieur des pratiques enseignantes. Ce regard sur les pratiques évaluatives a permis de jeter les bases pour décrire et comprendre celles-ci par le biais de huit éléments d’analyse : 1) quelles sont les intentions de l’enseignante ou de l’enseignant qui guident cette évaluation? 2) Sur quel(s) objet(s) porte l’évaluation? 3) Quel moyen est utilisé? 4) À quel moment de l’apprentissage est réalisée l’évaluation? 5) Qui évalue l’élève? 6) Quelles sont les interactions durant la passation? 7) Comment sont traitées les données recueillies grâce à l’évaluation? 8) Quel jugement et quelle décision peuvent être émis à la suite de cette évaluation? Finalement, après une pré-analyse, ce cadre a été complété par l’apport de la temporalité et de l’effet de contrat qu’est l’effet Topaze. L’ensemble de ce cadre nous permet de répondre à notre objectif de recherche visant la description et la compréhension des pratiques évaluatives en mathématiques d’une enseignante œuvrant auprès d’élèves en difficulté.
La nature exploratoire de cette recherche nous a menées à faire une étude de cas auprès d’une enseignante, Violetta, en adaptation scolaire et sociale évaluant sa classe dans trois champs des mathématiques (arithmétique, statistique et géométrie). À l’aide d’entrevues semi-dirigées pré-action et postaction et de séances d’observation en classe, nous avons pu faire une analyse de ses pratiques évaluatives au regard des éléments du cadre conceptuel.
Il ressort de cette analyse que pour Violetta, la phase interactive de son processus d’évaluation est la plus marquante. En effet, elle intervenait beaucoup lors de la passation et ce, sans même que les élèves ne la sollicitent. Il semble que ses interventions sont portées par le désir que ses élèves mènent à bien la tâche d’évaluation. À ce propos, de nombreux effets Topaze ont été observés lors de la passation des différents outils d’évaluation et Violetta semble faire ce type d’effet pour, entre autres, individualiser ses interventions, tenter d’avoir accès à une partie des raisonnements de ses élèves et éviter leur perception d’échec. Cependant, cela semble contradictoire avec son intention de voir le niveau d’autonomie des élèves puisque celle-ci se retrouve grandement réduite par les effets Topaze. Les deux autres phases du processus d’évaluation, soit pré-active et postactive, ne semblent pas être les plus prépondérantes des pratiques évaluatives de Violetta.
De plus, dans le cadre des pratiques évaluatives de Violetta, la temporalité semble être gérée parfois de manière hétérogène et parfois de manière homogène. À certains moments, les élèves pouvaient procéder à leur rythme lors de certaines passations, sans intervention de l’enseignante, alors qu’à d’autres moments, les interventions de Violetta poussaient les élèves à commencer et à terminer en même temps.
En nous intéressant à un aspect des pratiques enseignantes que sont les pratiques évaluatives d’après un cadre de référence mixte (pédagogique et didactique), nous ouvrons la porte à une meilleure compréhension des pratiques enseignantes des enseignantes et des enseignants en mathématiques au primaire. Et d’une manière plus spécifique, nous avons documenté les pratiques évaluatives en mathématiques d’une enseignante dans le contexte particulier qu’est la classe d’adaptation scolaire et sociale au primaire. De plus, nous avons pu documenter la gestion de la temporalité par l’enseignante lors d’évaluations. Finalement, nous avons pu faire une analyse et une réflexion concernant l’effet Topaze lors des pratiques évaluatives en mathématiques de l’enseignante.
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Barros, Ludimila de Oliveira. "Nas p?ginas do livro-mundo, travessias do alfabetizar: saberes e pr?ticas de professores alfabetizadores do TOPA/UEFS." Universidade Estadual de Feira de Santana, 2016. http://localhost:8080/tede/handle/tede/443.
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Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2017-02-14T22:48:29Z
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LUDIMILA BARROS. Disserta??o de Mestrado. PPGE2016.pdf: 1224261 bytes, checksum: 73682ebd9cde5b626cf8443fc6814194 (MD5)Made available in DSpace on 2017-02-14T22:48:29Z (GMT). No. of bitstreams: 1 LUDIMILA BARROS. Disserta??o de Mestrado. PPGE2016.pdf: 1224261 bytes, checksum: 73682ebd9cde5b626cf8443fc6814194 (MD5) Previous issue date: 2016-09-30
Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB
This paper seeks to understand the pedagogical practices of literacy teachers from the Todos pela Alfabetiza??o Program implemented by Universidade Estadual of Feira de Santana (TOPA / UEFS) and the knowledge mobilized by them in their literacy "crossings". The investigation lies in the field of qualitative research, based on the emerging paradigm of science (SANTOS, 1995), in connection with the approach of the History of Everyday Life (CERTEAU, 1998). The locus of this study was the city of Feira de Santana, where literacy teachers from TOPA have served as collaborators. There were a total of six respondents in this research: five literacy teachers from TOPA and a general coordinator of the program during the years of 2007-2011. In addition to the narrative interviews, UEFS?s Pr? Reitoria de Extens?o (PROEX/UEFS) provided documents used for training teachers from TOPA that were employed in the production of data analysis contained in this work. Academic reflections were woven from the theoretical and methodological assumptions of the Youth and Adult Education (Freire, 2011), in connection with the field of Teacher Training and Teacher Knowledges (Tardif, 2012; CHARLOT, 2000). Of the many lessons learned, it is clear that learning and teaching to read necessarily entails the understanding of the world around us and the seizure of the realities that reach us. This interpretation has helped us to think about the everyday life and the experiences in the routine processes of life-training, as producers of experiential knowledge that are so important to the teaching practice. Thus, it can be concluded that: 1) the pedagogical practice of literacy teachers from TOPA / UEFS are necessarily involved with their own cultural repertoires and with their learners?; 2) the literacy teachers from TOPA / UEFS in their everyday classrooms, give other meanings to the teaching training they receive in order to obtain success in literacy processes; and 3) the knowledge mobilized by literacy teachers in their literacy crossings intermingle with their experiences of "existing and being" on / with the world.
Este trabalho busca compreender as pr?ticas pedag?gicas dos professores alfabetizadores do Programa Todos pela Alfabetiza??o implementado pela Universidade Estadual de Feira de Santana (TOPA/UEFS), e os saberes mobilizados por eles em suas ?travessias? do alfabetizar. A investiga??o situa-se no campo da pesquisa qualitativa, amparada no paradigma emergente de ci?ncia (SANTOS, 1995), e em di?logo com a abordagem da Hist?ria do Cotidiano (CERTEAU, 1998). O l?cus foi a cidade de Feira de Santana, visto que os colaboradores desse trabalho atuaram como alfabetizadores do TOPA nesse munic?pio, e os sujeitos informantes dessa pesquisa foram um total de seis: cinco alfabetizadores do TOPA e uma coordenadora geral do programa entre os anos de 2007 a 2011. Al?m das entrevistas narrativas, utilizamos documentos da forma??o docente do TOPA, disponibilizados pela Pr? Reitoria de Extens?o da UEFS (PROEX/UEFS), na produ??o das an?lises de dados que constam nesse trabalho. As reflex?es acad?micas foram tecidas a partir dos pressupostos te?rico-metodol?gicos da Educa??o de Jovens e Adultos (FREIRE, 2011), em di?logo com o campo da Forma??o de Professores e Saberes Docentes (TARDIF, 2012; CHARLOT, 2000). Das muitas li??es apreendidas, ? poss?vel afirmar que aprender e ensinar a leitura implica, necessariamente, na compreens?o do mundo que nos cerca e na apreens?o das realidades que nos alcan?am. Essa interpreta??o nos ajudou a pensar o cotidiano e as experi?ncias vivenciadas nos processos rotineiros de vida-forma??o, como produtores de saberes experienciais t?o relevantes para a pr?tica docente. Assim, conclu?mos que: 1) a pr?tica pedag?gica dos alfabetizadores do TOPA/UEFS, se implicam, necessariamente, com os seus repert?rios culturais e de seus alfabetizandos; 2) os alfabetizadores do TOPA/UEFS, no cotidiano de suas salas de aula, d?o outros significados ? forma??o docente que recebem, no sentido de obterem ?xito nos processos de alfabetiza??o; e 3) os saberes mobilizados pelos alfabetizadores, em suas travessias do alfabetizar, se (con)fudem com suas experi?ncias de ?ser e estar? no/com o mundo.
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Topaj, Nathalie [Verfasser]. "Grammatical and pragmatic use of referential expressions in picture-based narratives of bilingual and monolingual children in Russian and German / Nathalie Topaj." Berlin : Humboldt-Universität zu Berlin, 2020. http://d-nb.info/1216103747/34.
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Moles, Martina. "Formulazione di blends poliolefinici per processi di stampaggio innovativi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15305/.
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Nel mondo del packaging una delle commodities che maggiormente viene lavorata e ricercata è il polietilene. Infatti, questo materiale si presta a numerose tecniche produttive, tra cui lo stampaggio a compressione.
Per ottimizzare tale processo industriale, può risultare efficacie la miscelazione con un secondo componente, capace di apportare nel prodotto finale un miglioramento delle proprietà.
Per questa tesi, in collaborazione con il laboratorio packaging plastico di SACMI, il componente aggiuntivo scelto è un copolimero di poliolefine cicliche, Topas. Tale additivo è stato scelto per migliorare il processo produttivo SACMI di flaconi in HDPE, ottenuti tramite stampaggio a compressione (CBF).
Le migliorie attese riguardano principalmente un incremento delle proprietà meccaniche, accompagnate a un maggior rapporto di stiro, consentendo di stampare flaconi più leggeri.
Lo scopo delle analisi è stato quindi quello di confrontare le proprietà dell’HDPE puro, usato fino ad ora in azienda, con quelle del blend e di osservare i risultati in modo da valutare l’effettiva convenienza dell’aggiunta del secondo componente.
Per quanto riguarda le analisi meccaniche, sono state effettuate prove di trazione per valutare l’incremento del modulo e prove a impatto per osservare cambiamenti nella resilienza, che cala considerevolmente.
Per un’analisi sulla cristallinità sono state invece svolte analisi termiche con la DSC, mentre per osservare la morfologia e le separazioni di fase è stato usato un SEM.
Anche la reologia è stata tenuta in grande considerazione, in particolar modo per quanto riguarda la viscosità elongazionale e di scorrimento, entrambe importanti durante l’estrusione del fuso in macchina.
Infine, sono stati svolti test normati sui flaconi riguardanti la geometria, misurando gli spessori e la resistenza al top load.
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Topal, Ayça [Verfasser], Georg [Akademischer Betreuer] Lutter, and Andreas [Gutachter] Seekamp. "Perkutaner Pulmonalklappenersatz mit Polycarbonat-Urethan Klappen zur Behandlung von Pathologien des rechtsventrikulären Ausflusstraktes am Schafmodell / Ayça Topal ; Gutachter: Andreas Seekamp ; Betreuer: Georg Lutter." Kiel : Universitätsbibliothek Kiel, 2020. http://d-nb.info/1235399702/34.
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Amaral, Alencar Miranda. "Topa e a tentativa missionária de inserir o Deus cristão ao contexto Maxakali: análise do contato inter-religioso entre missionários cristãos e índios." Universidade Federal de Juiz de Fora (UFJF), 2007. https://repositorio.ufjf.br/jspui/handle/ufjf/3197.
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CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Nesta dissertação de mestrado analiso o contato inter-religioso promovido pela atuação de missões evangélicas (SIL e MNTB) junto à comunidade indígena Maxakali, localizada no nordeste do Estado de Minas Gerais. Além de acompanhar o desenvolvimento das atividades proselitistas destas instituições entre os índios Maxakali, objetivamos compreender como ao longo do contato inter-religioso ocorre o processo de identificação do Deus cristão com o personagem indígena Topa. Na bibliografia sobre os índios Maxakali, Topa aparece como o personagem central do “mito de criação” do grupo, e apesar de alguns autores reconhecerem que seu nome também era associado ao Deus cristão, não existem análises sobre este processo. Assim, nosso desafio será compreender como Topa foi, e vêm sendo, apropriado de diferentes maneiras ao longo do contato entre os Maxakali e os missionários evangélicos; e também analisar o processo que possibilitou que este personagem gradativamente fosse identificado com o Deus cristão. O escopo desta pesquisa é, portanto, perceber o esforço missionário de inserir o Deus cristão ao contexto Maxakali através do personagem Topa. A partir da análise de mitos Maxakali e hinos evangélicos traduzidos para o idioma do grupo buscaremos compreender este processo de associação, e também a (in)adequação dos ensinamentos missionários aos padrões sócioculturais e religiosos dos índios Maxakali.
In this master’s dissertation, I analyze the pro inter-religious contact heard by acts of evangelic missions (SIL and MNTB) on the Maxakali Indian at the northeast of Minas Gerais. Besides of studying the proselytizes activities of this institutions among the Maxakali Indians, we have the goal to understand how the Indians started to associate Topa (the Indian character) as the Christian God during this inter-religious contact. In the Maxakali biography, Topa come as the central character of the “creation myth” of the group an despite of the fact that some authors recognize Topa as the Christian God in their works, that are no analysis about it. So the challenge here is to understand how Topa was used in so many ways during the contact between the Maxakali and the evangelic missionaries; and analyze the process the made possible this character to be gradually associated with the Christian God. Hence, the purpose of this research is to realize the missionary effort to introduce the Christian God in the Maxakali context through Topa. From the analysis of the Maxakali myths an evangelic religions songs translated to their idiom, we will try understand the association process, and also how (in)adequate were the Christian teaching to the Maxakali religious and social-cultural standards.
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Rodriguez, Rios Rodolfo. "Caractérisation du magmatisme et des minéralisations associées du dôme de Pinos et des dômes de rhyolite à topaze du champ volcanique de San Luis Potosi (Mexique)." Nancy 1, 1997. http://www.theses.fr/1997NAN10294.
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Les dômes volcaniques de "Pinos", "El Gato" et "Cerro Silva", d'âge Oligocène moyen, sont localisés dans les Etats de Zacatecas et de San Luis Potosi, au centre du Mexique et appartiennent au Champ Volcanique de San Luis Potosi, situé dans la partie méridionale de la "Sierra Madre Occidental". Ils ont fait l'objet d'études minérales, géochimiques et structurales détaillées en complément des études de terrain antérieures. Le "dôme de Pinos" est un édifice complexe dans lequel plusieurs épisodes volcaniques ont été reconnus. Son histoire débute par la mise en place de la formation "Barbechos", qui constitue l'essentiel du "dôme de Pinos" et qui s'exprime sous la forme de laves avec des vitrophyres en plusieurs épisodes. La formation "Barbechos" est constituée de deux unités bien identifiables (Trb 1 et Trb 2), la deuxième unité étant moins évoluée que la première. Le début de chaque unité commence par un épisode explosif limité, conduisant à la formation de minces niveaux de tufs. Cette formation est suivie par la mise en place de la rhyolite "Santana", qui représente un terme plus évolué que les deux unités "Barbechos" précédentes. Elle se met en place dans le "dôme de Pinos" sous la forme de petits dômes endogènes, dont le dôme de "Santana" au nord est un exemple. Une phase explosive, comme précédemment très limitée, serait associée à l'épisode "Santana". Ces deux formations sont constituées de roches de composition rhyolitique, de tendance alcaline (formation "Barbechos") devenant légèrement calco-alcalines (rhyolite "Santana"). Leur caractère peralumineux actuels serait acquis secondairement. De petites veines de quartz aurifère développant des altérations phylliteuses à leurs épontes ont été étudiées dans le "dôme de Pinos". [. . . ]
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Fawad, Salman Kohar. "Quantitative analysis of multi-phase systems -steels with mixture of ferrite and austenite." Thesis, Linköping University, The Department of Physics, Chemistry and Biology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2681.
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The goal of this work has been to evaluate the different experimental techniques used for quantitative analysis of multi-phase materials systems.
Powder based specimens containing two-phases, austenite and ferrite , were fabricated and quantified. The volume fraction of ferrite varied from 2 Vol% to 50 Vol%.
X ray powder diffraction (XRD) measurements were based on two peak analysis. Computer based software Topas was used for quantitative analysis, which is believed to be the most advanced in this field. XRD results were found within the absolute limit of +/- 4% of given ferrite volume fraction. Volume fraction as low as 2 Vol% was successfully detected and quantified using XRD. However, high statistical error was observed in case of low volume fraction, such as 2 Vol% and 5 Vol% ferrite volume fraction.
Magnetic balance (MB) measurements were performed to determine the volume fraction of magnetic phase, ferrite. MB results were found in good agreement with given volume fractions. As low as 2 Vol% volume fraction was detected and quantified with MB. MB results were within the absolute limit of +/- 4% of given ferrite volume fraction.
Image analysis (IA) was performed after proper sample preparation as required by electron backscatter diffraction (EBSD) mode of Scanning electron microscopy (SEM). IM results were found within the absolute limit of +/- 2 % of given ferrite volume fraction. However, high statistical error was observed in case of 2 Vol% volume fraction.
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Grenier, Delaney Jasmine. "Comparaison entre l'aire valvulaire aortique projetée et le score calcique de la valve aortique pour classifier et prédire le devenir des patients atteints d'une sténose aortique à bas débit et bas gradient - TOPAS phase III." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/67068.
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La sténose aortique à bas débit et bas gradient (SA-BD-BG) peut s’accompagner d’une fraction d’éjection ventriculaire gauche altérée (SA-BD-BG classique) ou préservée (SA-BD-BG paradoxale). Elles constituent un sous-ensemble de patients très difficile à caractériser. En effet, le défi chez les patients avec une SA-BD-BGest de distinguer entre une SA sévère d’une SA pseudo-sévère. L’établissement de la sévérité exacte de la SA est importante, car les patients ayant une SA réellement sévère bénéficient généralement d’un remplacement valvulaire aortique, mais sans intervention, ceux-ci auront un très mauvais pronostic. Malheureusement, les critères mesurés à l’échocardiographie au repos et à l’effort, utilisés pour détecter la sévérité de la SA selon les guides de pratique actuels, ne sont pas optimaux et par conséquent, une certaine proportion de patients ne sont pas bien diagnostiqués et ne reçoivent pas la thérapie appropriée. Il a été démontré dans notre groupe que chez les patients atteints d’une SA-BD-BG, l’aire valvulaire aortique projetée (AVAProj), mesurée à l’aide d’une échocardiographie au repos et à l’effort, est un meilleur prédicteur de sévérité de la SA et de mortalité que les critères habituels mesurés lors de l’échocardiographie au repos et à l’effort. Par contre, l’échocardiographie à l’effort ne peut être faite chez tous les patients et parfois, elle conduit à des résultats qui sont non concluants.Le degré de calcification de la valve aortique, mesuré par tomodensitométrie, est un autre paramètre utilisé pour confirmer la sévérité de la SA, mais les seuils diagnostiques et pronostiques ne sont pas encore optimisés chez les patients atteints d’une SA-BD-BG. Les hypothèses sont que l’aire valvulaire aortique projetée est équivalent au degré de calcification de la valve aortique pour 1) évaluer la sévérité de la SA et 2) pour prédire la mortalité toute cause chez les patients atteints d’une SA-BD-BG. L’objectif général de ce projet de maîtrise est de comparer l’aire valvulaire aortique projetée et le degré de calcification de la valve aortique pour évaluer la sévérité de la SA et prédire le devenir des patients atteints d’une SA-BD-BG.Low flow, low gradient aortic stenosis (LF-LG-AS) may occur with depressed (classical LF-LG-AS) or with preserved (paradoxical LF-LG-AS) left ventricular ejection fraction. This entity is really difficult to characterize. Indeed, the challenge in this subgroup is to discriminate between a true-severe versus a pseudo-severe AS. It is important to determine the exact severity of AS, because patients with a true-severe AS will benefit from anaortic valve replacement and without intervention, their prognostic will be extremely poor. Unfortunately, rest and stress echocardiographic criteria recommended by the actual guidelines for patients with LF-LG-AS to assess AS severity are far from being optimal, and consequently, a substantial proportion of these patients stays misevaluated and may thus not receive the optimal therapy. Our group found that in patients with LF-LG-AS,projected aortic valve area (AVAProj), measured under rest and stress echocardiography, better predicts underlying AS severity and survival compared to traditional echocardiographic parameters. However, stress echocardiography is not possible in some patients and AS severity often remains indeterminate. The degree of aortic valve calcification, calculated by multi-detector computed tomography may be useful to confirm AS severity, but the optimal cut off values are not well established in patients with LF-LG-AS. The hypotheses related to this study are that projected aortic valve area is equivalent to the degree of aortic valve calcification to 1) evaluate AS severity and 2) to predict all-cause mortality in patients with LF-LG-AS. The general objective is to compare the projected aortic valve area and the degree of aortic valve calcification to evaluate AS severity and to predict mortality in patients with LF-LG-AS.
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Zhi, Xiaoduo. "Transcription-Coupled DNA Supercoiling in Escherichia Coli: Mechanisms and Biological Functions." FIU Digital Commons, 2012. http://digitalcommons.fiu.edu/etd/865.
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Transcription by RNA polymerase can induce the formation of hypernegatively supercoiled DNA both in vivo and in vitro. This phenomenon has been explained by a “twin-supercoiled-domain” model of transcription where a positively supercoiled domain is generated ahead of the RNA polymerase and a negatively supercoiled domain behind it. In E. coli cells, transcription-induced topological change of chromosomal DNA is expected to actively remodel chromosomal structure and greatly influence DNA transactions such as transcription, DNA replication, and recombination.
In this study, an IPTG-inducible, two-plasmid system was established to study transcription-coupled DNA supercoiling (TCDS) in E. coli topA strains. By performing topology assays, biological studies, and RT-PCR experiments, TCDS in E. coli topA strains was found to be dependent on promoter strength. Expression of a membrane-insertion protein was not needed for strong promoters, although co-transcriptional synthesis of a polypeptide may be required. More importantly, it was demonstrated that the expression of a membrane-insertion tet gene was not sufficient for the production of hypernegatively supercoiled DNA. These phenomenon can be explained by the “twin-supercoiled-domain” model of transcription where the friction force applied to E. coli RNA polymerase plays a critical role in the generation of hypernegatively supercoiled DNA.
Additionally, in order to explore whether TCDS is able to greatly influence a coupled DNA transaction, such as activating a divergently-coupled promoter, an in vivo system was set up to study TCDS and its effects on the supercoiling-sensitive leu-500 promoter. The leu-500 mutation is a single A-to-G point mutation in the -10 region of the promoter controlling the leu operon, and the AT to GC mutation is expected to increase the energy barrier for the formation of a functional transcription open complex. Using luciferase assays and RT-PCR experiments, it was demonstrated that transient TCDS, “confined” within promoter regions, is responsible for activation of the coupled transcription initiation of the leu-500 promoter. Taken together, these results demonstrate that transcription is a major chromosomal remodeling force in E. coli cells.