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1
Siddiqui, Hassan. "ROSAT observations of clusters of galaxies." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/35783.
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Observations of four rich clusters of galaxies made using the Position Sensitive Proportional Counter (PSPC) instrument onboard the German Rontgensatellit (ROSAT) observatory were analysed. These data were complemented by ROSAT Wide Field Camera (WFC), Ginga and optical Automated Plate Measuring Machine (APM) information. Cluster properties, including the temperature profile, gas mass and total gravitational mass were investigated. Estimates for the mass deposition rates of central cooling flows, where appropriate, were made. Substructure was investigated using isophotal analysis and the employment of hardness ratios. The presence of central, intrinsic absorption, discovered previously in some similar clusters was confirmed. This is probably due to cold gas clouds. In the case of A2199, the WFC/PSPC data provided useful constraints to the partial covering fraction of these putative gas clouds. Abell 2142, which is classified in the optical as a binary cluster was shown to have a complex substructure. It is highly elliptical out to ~ 2 Mpc which can be explained in terms of a merger between two subclusters of differing sizes. The temperature and luminosities measured for A2218 and A1061, both of which have high velocity dispersions, indicate that these dispersion measurements are overestimated. Substructure is the most plausible explanation; spatial analysis supports this view. The galaxy density profiles obtained from the APM data were found to be consistent with the King approximation, and their luminosity functions were in reasonable agreement with the 'universal' Schechter model with a characteristic absolute magnitude of Bj = -21.6. Finally, the x-ray data showed that the gas mass fraction continues to rise with radius at the limit of detectability of ~ 2 Mpc. Including the optical data, the baryonic fraction at this radius is = 0.3. This result is difficult to reconcile with the universal fraction determined from standard cosmological nucleosynthesis models.
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Daniels, Julian. "The ROSAT wide field camera scientific simulator." Thesis, University of Leicester, 1990. http://hdl.handle.net/2381/35862.
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The ROSAT spacecraft is due for launch in June 1990. On board will be an X-Ray Telescope (XRT) and an XUV Wide Field Camera (WFC). The XRT will perform the first ever imaging all sky survey in the 0.1 keV- 2.0 keV wave-band. This will be complemented by the first all sky survey in the 0.062 keV - 0.21 keV wave-band using the WFC. A scientific simulator has been developed to assist the WFC mission in the following areas: 1. Production of representative telemetry to develop and test the ROSAT WFC ground system software. 2. Determination of optimum parameters for several WFC firmware and hardware features. 3. Evaluation of background radiation effects on operational and astrophysical aspects of the WFC mission. The modelling and simulation of the performance aspects of the WFC telescope and its interaction with the predicted environment is described here. The complete model has been implemented as a user orientated software package and can be run to produce scientific telemetry and other simulated output that interface with the ROSAT WFC ground system software. The results of the simulator provide essential foresight into the following: The efficacy of image analysis software. The efficiency of in-orbit WFC low energy (50 keV) electron rejection. Prediction of all sky exposure coverage, the background environment, and minimum source sensitivity.
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Piters, Anna Johanna Maria. "ROSAT all-sky survey observations of normal stars." Amsterdam : Amsterdam : Sterrenkundig Instituut 'Anton Pannekoek' ; Universiteit van Amsterdam [Host], 1995. http://dare.uva.nl/document/92469.
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Clayton, Kathryn L. "ROSAT and HST observations of magnetic cataclysmic variables." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/35858.
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This thesis describes principally ROSAT and HST observations of magnetic (or proposed magnetic) cataclysmic variables. Chapter 2 details a ROSAT observation of the polar EK UMa. The orbital light curve reveals a single bright phase. During this bright phase deep dips in the flux are seen, consistent with accretion stream occultation. The soft X-ray spectrum has an unusually high temperature of 50 KTBB 62 eV. No hard X-ray flux is detected. Chapter 3 details ROSAT observations of proposed intermediate polars SW UMa and 1H0709-360. The previously reported X-ray/optical periodicities in SW UMa were not detected. Spectral analysis indicates a two-temperature model is appropriate. The weak signal from 1H0709-360 precludes a detailed spectral analysis. 1H0709-360 has dropped in flux by ~ 2 orders of magnitude since its detection. The intermediate polar classification of these two systems remains unconfirmed. Chapter 4 describes ROSAT and contemporaneous optical and HST observations of the intermediate polar AE Aqr. During this observation X-ray flares were detected for the first time. The white dwarf spin modulated count rate increased only slightly with increased intensity. AE Aqr has an unusually soft spectrum which is only fit by a two temperature optically thin plasma emission model. Chapters 5 and 6 detail ROSAT, HST, EUVE and complementary optical observations of the polar QS Tel. The soft X-ray/EUV data showed a bright-faint morphology. The EUVE observations, ~ 1 year later, revealed a change in morphology, indicating that both poles were active. A deep narrow dip is observed in both the ROSAT and EUVE observations. The HST (FOS) observation had a mean spectrum of an underlying continuum with strong emission lines superposed. Orbital modulation was present in both. A narrow dip is observed in the continuum fold which is consistent with the dip observed by ROSAT and EUVE.
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Spurgeon, Louise Elizabeth. "XMM and ROSAT observations of clusters of galaxies." Thesis, University of Leicester, 2003. http://hdl.handle.net/2381/30665.
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I present an investigation into the X-ray properties of galaxy clusters, consisting of a principal component analysis of ROSAT data and studies of three clusters observed with the XMM-Newton satellite. The principal component analysis provides an investigation into similarities between cluster surface brightness profiles. Initial results for 42 clusters are presented and compared to existing models. The cluster profiles are reproduced to good accuracy using three principal components. Correlation of the principal components to physical properties is investigated but the results are inconclusive. Observations of Abell 1413, Abell 665 and Abell 2163 made with XMM-Newton were investigated spectrally and spatially to determine cluster properties. Global temperatures were found to be 7.08 +/- 0.140.13 keV for Abell 665 and 11.98 +/- 1.2 keV for Abell 2163. The temperature and abundance profiles of the clusters are very different, with some differences attributed to the recent merging of subclusters in Abell 665 and Abell 2163. Spatial analysis of the cluster surface brightness profiles is undertaken with beta and NFW models. The profiles produced for the three clusters are used to estimate the variation of gas, gravitational and iron mass with radius. These are used to draw general conclusions, such supernovae numbers (NSNII 109--11). The cosmological density and matter density parameters are found; &OHgr;0 = 0.22 -- 0.33 +/- 0.1 and &OHgr; m ? 0.12+/-0.060.04. This suggests a low density universe, but is subject to uncertainty due to extrapolation to larger radii.
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Pislar, Vincent. "Etude d'Amas de Galaxies observés avec le satellite ROSAT." Phd thesis, Université Pierre et Marie Curie - Paris VI, 1998. http://tel.archives-ouvertes.fr/tel-00068737.
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Ce travail est composé de deux parties.La première partie concerne l' étude de l'amas de galaxies Abell 85 en utilisant les données en rayons X du satellite ROSAT ainsi que des données optiques et radio. Plusieurs méthodes d'analyse ont été appliquées aux données. Nous avons ainsi pu étudier des régions particulières de l'amas comme la partie centrale, siège des courants de refroidissement ou la région de la radiosource 0038-096 où la mesure des flux X et radio a permis d'obtenir la valeur du champ magnétique.
Une seconde partie du travail a consisté à étudier les
caractéristiques des courants de refroidissement ainsi que la masse de gaz et de matière noire dans 11 amas de galaxies, grâce à un programme conçu pour ajuster les données de ROSAT. Nous avons également obtenu la fraction de baryons de ces amas et discuté les conséquences cosmologiques des valeurs obtenues.
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Canosa, Celestino Miguel. "FRI-BL Lac unification using ROSAT X-ray observations." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340153.
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Pislar, Vincent. "Étude d'amas de galaxies observés avec le satellite ROSAT." Paris 6, 1998. http://www.theses.fr/1998PA066594.
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Ce travail est composé de deux parties. La première partie concerne l'étude de l'amas de galaxies Abell 85 en utilisant les données en rayons x du satellite Rosat ainsi que des données optiques et radio. Plusieurs méthodes d'analyse ont été appliquées aux données. Nous avons ainsi pu étudier des régions particulières de l'amas comme la partie centrale, siège des courants de refroidissement ou la région de la radiosource 0038-096 ou la mesure des flux x et radio a permis d'obtenir la valeur du champ magnétique. Une seconde partie du travail a consisté à étudier les caractéristiques des courants de refroidissement ainsi que la masse de gaz et de matière noire dans 11 amas de galaxies, grâce à un programme conçu pour ajuster les données de Rosat. Nous avons également obtenu la fraction de baryons de ces amas et discuté les conséquences cosmologiques des valeurs obtenues.
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Egger, Roland. "Der Supernova-Überrest North Polar Spur in der ROSAT- Himmelsdurchmusterung." Garching bei München : Max-Planck-Institut für extraterrestrische Physik, 1993. http://catalog.hathitrust.org/api/volumes/oclc/29509967.html.
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Morley, John E. "Cool stars in the galaxy : a ROSAT and ASCA view." Thesis, University of Leicester, 1999. http://hdl.handle.net/2381/30624.
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This thesis describes work undertaken using data from the ROSAT and ASCA missions, in order to study the coronal x-ray emission of cool, late type stars. Chapters 1 and 2 summarise the emission processes involved and the methods by which the x-rays are detected and analysed, including a discussion of the ROSAT and ASCA missions. Chapter 3 details a deep soft x-ray survey of the Galactic Plane using the ROSAT Position Sensitive Proportional Counter. The data consist of 9 fields, each of 10ks exposure, pointed at positions on or very close to the plane. Presented are the source list, number-flux relation and the x-ray to optical flux ratios. I present the results of source count modelling which suggest 50% stellar and 8% extra-galactic contributions. The nature of the unidentified population is discussed. Chapter 1 discusses the temporal variability of the x-ray emission of stars in the Hyades cluster. The data consist of 13 PSPC fields, each of 20ks exposure, targeted in the central regions of the cluster. Little evidence is present to suggest long term variability, though 14 do exhibit short term variability. Time resolved spectra of detected flares are presented. Flare modelling results suggest flare loop heights of 1-2 solar radii. Chapters 5 details observations, obtained using the ASCA satellite, of 3 sources, VW Cep. SW Lac and 44i Boo. These observations form part of an ongoing survey of W UMa systems. Spectral and temporal results are compared to a previous ROSAT survey. I show that the observed systems have a high temperature component comparable with that seen in RS CVN and BY Dra systems. I also provide evidence for non-solar metal abundances in these systems.
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Tschöke, Daniel. "X-rays from central starburst galaxies an analysis of ROSAT observations /." [S.l.] : [s.n.], 2001. http://e-diss.uni-kiel.de/diss>/d427.pdf.
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Briggs, Kevin. "Coronal emission from late-type stars : a ROSAT and XMM view." Thesis, University of Leicester, 2002. http://hdl.handle.net/2381/30656.
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In Chapter I, I introduce the framework of observational and theoretical evidence that has been constructed to understand the vast range of X-ray characteristics exhibited by late-type stars on the basis of the magnetic dynamo that is thought to power the Sun's own modest X-ray activity, and describe the spectral analysis techniques and X-ray instruments used in this work. In Chapter 2 I present a catalogue-based classification of X-ray sources detected in the ROSAT PSPC Galactic Plane Survey in the Third Quadrant (3QGPS) and use the results to infer a denser spatial distribution of young, X-ray active stars in the local Galaxy than has been traditionally assumed. In Chapter 3 I exploit the high coronal activity of young stars to search for unrecognised members of the Hyades-age open clusters NGC 6633 and IC 4756 in deep ROSAT HRI images, and make a novel comparison of the X-ray activity levels of these clusters with that of the Hyades. In Chapter 4 I explore the X-ray emission from very low mass stars in an XMM-Newton EPIC pointing in the Pleides, finding marginal support for a decline in X-ray activity for stars with spectral types later than " M4 that may be a signature of the changeover to a non-solar-like dynamo in fully-convective stars. I also undertake spectral and variability studies of the X-ray-bright members in the field, and present evidence that the detection of early-type stars in the cluster are fully consistent with emission from late-type companions. In Chapter 5 I perform a time-resolved spectroscopic study of the nearby active K0 star AB Dor using the XMM-Newton EPIC pn, with comparison to a study using the higher-resolution XMM-Newton RGS, investigating the temperature structure and elemental adundance changes during the course of a moderate flare.
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Brandt, William Nielsen. "Aspects of soft X-ray activity in the centres of radio-quiet active galaxies." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242938.
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Anderson, Martin William Bruce 1965, University of Western Sydney, of Science Technology and Environment College, and School of Computing and Information Technology. "A radio survey of selected fields from the ROSAT All Sky Survey." THESIS_CSTE_CIT_Anderson_M.xml, 2002. http://handle.uws.edu.au:8081/1959.7/359.
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The beginning of X-ray astronomy is based on two accidental discoveries made in 1962. A single point source, Scorpio X-1 and remarkable discovery of the diffuse background radiation, three years before the microwave background was discovered. Over the past four decades, X-ray astronomy has matured into a major branch of astronomy, contributing to our understanding of the physical processes operating in many different types of sources, from stars to high redshift quasars. In 1990, the launch of the ROSAT satellite offered to unique opportunity to investigate the radio properties of X-ray emitters. A sample of faint X-ray emitters from a deep pointed observation is used in this thesis to investigate the prediction that sub-mJy radio source are a major contributor to the X-ray background. Another sample of 695 bright X-ray emitters were selected from ROSAT All Sky Survey for optical follow-up as a European Southern Observatory key project. The radio follow-up of the sample was undertaken for this thesis. The aim is to construct a catalogue of radio emitting X-ray (REX) sources to study their quantitative statistical properties and to select out a sample of BL-Lac objects for further study. Based on previous surveys approximately 19% or 130 of the X-ray sources should be directly associated with a radio emitter, of which 90% will be positionally coincident with the most plausible optical candidate for an X-ray source. This increases the efficiency of the optical identification program by about 15 percent.Doctor of Philosophy (PhD)
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Anderson, Martin William Bruce. "A radio survey of selected fields from the ROSAT All Sky Survey /." View thesis, 2002. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030704.133327/index.html.
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Milward, Stephen Richard. "XUV calibrations and electron background reduction for the ROSAT Wide Field Camera." Thesis, University of Leicester, 1986. http://hdl.handle.net/2381/35732.
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The ROSAT Wide Field Camera (WFC) is an imaging experiment, conducted by a consortium of UK groups, intended to perform the first all sky survey in the XUV wavelength band (6-30nm). As part of the development and flight programmes, XUV calibration and background simulation work has been undertaken at Leicester. Here, the commissioning and development of an XUV line source and monochromator is described and their use to produce a laboratory detector standcird is reported. Subsequent efficiency calibration of a Csl coated prototype WFC MicroChannel plate detector is reported and the results shown to be in substantial agreement with a published model of photocathode behaviour. The results fill a gap in the published data between 11.2 and 25.6nm. Reflectivity measurements on the Wolter-Schwtirzschild Type 1 grazing incidence mirrors are reported and compared with the predictions of theory and with published measurements on test flats. Differences between theoretical reflectivities and the empirical results of up to 15% axe shown to be consistent with either: low density reflective gold coating, hydrocarbon contamination, or errors in the optical constants assumed for gold. Measurements were found to be broadly in agreement with published results. In addition to experimental work, the impact of the orbital low energy electron background is assessed on WFC performance and shown to be limiting due to the inclination of the spacecraft orbit. Reduction of this background is shown, by computer simulation, to be feasible by the introduction of a magnetic screen. Preliminary electron beam tests support this view.
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Demarne, Frédéric-Emmanuel. "L'amélioration variétale du "Géranium rosat" (pelargonium sp. ) : contribution systématique, caryologique et biochimique." Paris 11, 1989. http://www.theses.fr/1989PA112007.
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A l'île de la Réunion, la culture des pélargoniums de parfumerie ("géranium rosat") est confrontée des problèmes phytopathologiques dont la solution actuelle passe nécessairement par la génétique. La stérilité mâle de tous les cultivars, et la méconnaissance de la filiation de ces plantes dans le genre Pelargonium (Geraniaceae), ont jusqu'ici constitué des obstacles rédhibitoires à toutes les tentatives d'amélioration variétale. Si on admet généralement que les cultivars sont, à l’origine, des hybrides interspécifiques, aucune information vérifiée n'est disponible sur la filiation de ces plantes à partir des espèces sauvages authentifiées de Pelargonium. En fonction des types de cultivars rencontrés, plusieurs hypothèses sur la nature de cette hybridité sont avancées, qui font intervenir les espèces Pelargonium capitatum, P. Radens, P. Graveolens, et P. Vitifolium. Les observations morphologiques, cytologiques et biochimiques des espèces sauvages, des cultivars réunionnais, et des hybrides interspécifiques artificiels créés en conditions contrôlées, ont permis de vérifier ces hypothèses et de retracer les filiations des cultivars. Les études originales présentées sur la composition des huiles essentielles des espèces sauvages conduisent à proposer un schéma de biosynthèse des molécules monoterpéniques dans les essences des Pelargonium à feuilles odorantes. Ces critères biochimiques s'avèrent un excellent outil en taxonomie, en systématique et dans la prévision de la transmission des caractères des essences chez les hybrides interspécifiques. L'hybridation interspécifique à partir d'espèces sauvages permet la création d'hybrides intéressants tant pour la qualité de leur production d'essence que pour leur résistance à certaines maladies. Des stratégies de sélection sont proposées en ce sens, et ont, pour certaines, été vérifiéesOn the Island of Réunion, several plant diseases cause severe damages to the cultures of pelargoniums grown for essential oil production ("géranium rosat"). Genetic improvement seems to be the only solution to these problems. Up to now, the male-sterility of the cultivars and the few informations available on the relations of these plants with the true species of the section Pelargonium (Geraniaceae), were considered as major hindrances to genetic improvement through plant breeding techniques. Even if the interspecific origin of the cultivars is put forward for a long time, no reliable explanation can be found on the real nature of this hybridity. Different new hypothesis are carefully studied, which involve Pelargonium capitatum, P. Radens, P. Graveolens, and P. Vitifolium as putative parents. Morphological, karyological, and biochemical observations on authentified natural species, cultivars, and artificial interspecific hybrids are reported. They confirm the interspecific origin of the cultivars, and lead back to their ancestors. Original descriptions of the essential oils of the different natural species and artificial hybrids are given. They allow to imagine the biochemical pathway of the monoterpenic hydrocarbons in the scented-leaves pelargoniums. In addition, these biochemical features are found to be of great interest in botanical and taxonomical studies; for example, they reveal a natural intraspecific variability among certain species. These criteria are also powerful tools to foresee and to follow the heritability of the characters of the essential oils in a breeding program
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Thurston, Mark Robert. "X-ray and optical observations of the young open cluster NGC 2516." Thesis, University of Birmingham, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.366165.
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Burleigh, Matthew R. "Hot white dwarfs in detached binaries from the Rosat WFC All Sky Survey." Thesis, University of Leicester, 1997. http://hdl.handle.net/2381/30640.
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White dwarfs in unresolved pairs with normal stars (spectral type K or earlier) are invisible at optical wavelengths, due to the close proximity of the much more luminous main sequence companion. ROSAT has provided evidence for the existence of a growing sample of these hidden white dwarfs through the detection of EUV and soft X-ray emission. For companions of spectral type ~A5 or earlier, the white dwarf can be spectroscopically identified at far-ultraviolet wavelengths by IUE. Eleven such systems had previously been found in this way from ROSAT, EUVE and IUE observations. A search for fainter, less obvious samples of these binaries is presented, and five new systems have been discovered. Three new close, pre-CV WD+dM binaries have also been found in the ROSAT WFC survey. Intriguingly, all three degenerates are rare mixed hydrogen/helium atmosphere DAO white dwarfs. The EUVE spectrum of one of these new systems, RE J0720-318, is analysed in detail. In particular, it is found that, while the optical spectrum can only be reproduced with a homogeneously mixed atmosphere, the EUVE spectrum can only be matched by a layered model, implying that the underlying structure of the white dwarf is stratified. The hydrogen layer mass of 3x10-14 M is the lowest measured for any white dwarf from EUVE spectra. In addition, an unprecedented HeI/HI ratio of ~1 is detected for the absorbing column along the line of sight, implying a hydrogen ionisation fraction of >90%, if all of this material resides in local interstellar medium. It is suggested that most of the helium lies in the vicinity of the star, possible in the form of a circumbinary disk left over from the common envelope phase. These results have important implications for our understanding of the evolutionary status of DAO white dwarfs in particular, and for post-common envelope systems in general. A catalogue of all the detected white dwarf binaries found in the ROSAT survey is presented, with an analysis of the white dwarf mass distribution. Compared with optically selected samples, a significant excess of hot, massive objects is detected. This excess probably arises from the slower cooling rates of massive (>0.9M) white dwarfs in comparison to normal mass (0.6M) stars.
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Becker, Christopher Michael 1968. "Studies of supersoft X-ray sources in the ROSAT database of pointed observations." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/50333.
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Barber, Colin R. "Probing the local interstellar medium and the soft X-ray background with ROSAT." Thesis, University of Leicester, 1994. http://hdl.handle.net/2381/35778.
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Vincent, Grégoire. "Analyse et modélisation du développement du géranium rosat (Pelargonium sp. ) en vue de la rationalisation de l'opération de récolte." Lyon 1, 1994. http://www.theses.fr/1994LYO19003.
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Le geranium est une culture perenne cultivee pour l'huile essentielle extraite de son feuillage. La problematique agronomique a l'origine de ce travail est la rationalisation de l'operation recolte. L'analyse du developpement de la plante en l'absence de contrainte a permis de caracteriser le modele architectural et de mettre en exergue les principales preseances entre bourgeons. La seconde phase a consiste a etudier l'expression de ces preseances en fonction des perturbations appliquees a la plante. L'effet de differentes modalites de taille et de pincement a ete explore, ainsi que l'effet de contraintes appliquees au niveau du systeme racinaire. Une attention speciale a ete consacree a l'etude des relations de competition entre rameaux voisins. La representation proposee de la morphogenese du geranium repose sur le concept de potentiel de croissance individuel d'un meristeme primaire, fixe au cours des premiers stades de fonctionnement. La determination de ce potentiel est largement sous le controle de caracteristiques architecturales (ordre de ramification, rang d'insertion, etc. ) et de la vigueur de la plante qui, elle-meme, depend des conditions de croissance et du niveau de developpement. Les correlations physiologiques actives semblent exceptionnelles: des priorites stables gerent l'allocation des ressources et les neoformations en fonction des disponibilites. Cette representation a fait l'objet d'une modelisation par grammaire formelle (l system). Le modele developpe en turbo pascal oriente objet, genere une representation 2d et des courbes de croissance permettant une validation au niveau architectural et au niveau de la croissance globale. L'extension du modele a la simulation de la repousse apres taille est discutee
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Simon, Carsten. "Optical variability of counterparts of ROSAT X-ray sources near the north ecliptic pole." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=974293636.
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Marsh, Matthew C. "An EUV selected sample of DA white dwarfs from the ROSAT all sky survey." Thesis, University of Leicester, 1995. http://hdl.handle.net/2381/35726.
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A detailed study of the sample of hot DA white dwarfs detected in the EUV and soft X-ray bands of the ROSAT all-sky survey is presented. Interpretation of the ROSAT data requires a priori knowledge of the temperature, gravity and visual brightness of all the white dwarfs detected. This information was obtained by a series of optical photometric and spectroscopic follow-up observations which are presented in detail. A by-product of this work is the mass distribution of the EUV selected sample of white dwarfs which shows an unexpectedly large proportion of high mass objects when compared with the optically selected population. It is suggested that this bias arises from the fact that hot white dwarfs with high gravities have lower heavy element abundances and are, therefore, more luminous (and easier to detect) than the lower gravity stars. In keeping with earlier results, it is found that the majority of stars 40,000K have more or less pure H atmospheres, while those above this temperature contain significant quantities of heavy elements. However, the increase size of the sample yields some important new results. A number of stars in the 40,000K to 50,000K range have nearly pure H atmospheres, a result at odds with the predictions of radiative levitation calculations. Furthermore, the dispersion in the observed EUV/X-ray opacity at a given temperature is much larger than expected from theory. An additional mechanism is then needed, other than radiative levitation and gravity, that can modify the atmospheric abundances. Finally, the expected strong dependence of opacity with surface gravity is not seen, except for very high mass stars.
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Verdier, Loïc. "Détection de structures par combinaison des données Planck et BOSS et détection simultanée d’amas de galaxies dans les données Planck et ROSAT." Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS192/document.
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Issus de l'effondrement gravitationnel des fluctuations de matière primordiales, les amas de galaxies sont constitués d'un halo de matière noire, d'un plasma de baryon ou « gaz chaud » et de galaxies. Le comptage des amas apporte des contraintes fortes sur la cosmologie.Mon travail consiste à améliorer la détection de la composante de gaz chaud des amas, à la fois pour des structures proches et lointaines. Ce gaz chaud est détectable dans les cartes du satellite Planck par effet Sunyaev-Zel'dovich et dans les cartes du satellite ROSAT par rayonnement de freinage.La première partie de cette thèse consiste à détecter du gaz chaud dans les cartes de Planck à la position des quasars de l'expérience BOSS, donc dans des structures lointaines.Le signal est dominé par une émission de type poussière. J'ai donc élaboré un filtre capable d'extraire un signal de gaz chaud sous-dominant et de le séparer de l'émission de poussière. Le signal de gaz chaud obtenu par cette approche est significatif pour les structures à redshift z >2.5.La seconde partie de cette thèse, la détection simultanée, est dédiée à la construction d'un filtre capable d'extraire des amas (à z<1.5) individuellement dans les données ROSAT et adapté à la statistique du bruit. Ce filtre est en outre conçu dans la perspective d'être combiné avec le filtre utilisé pour détecter les amas dans les données Planck. L'objectif final étant d'obtenir plus d'amas moins massifsOriginating from the gravitational collapse of the primordial fluctuations of matter, galaxy clusters are the mixture of a dark matter halo, a baryonic plasma also called « hot gas » and several galaxies. Cluster counts provide stringent constraints on cosmology.Improving the detection of the hot gas component in nearby or distant structures is the main goal of my work. We can detect this hot gas in the Planck satellite maps thanks to the Sunyaev-Zel'dovich effect and in the ROSAT satellite maps by bremsstrahlung.The first part of my thesis is dedicated to the detection of hot gas in Planck maps at the positions of BOSS quasars, so in distant structures.Dust-like emission dominates our signal. I developped a new filter in order to separate the possible sub-dominant hot gas emision from the dust one. I get a significnt hot gas signal for structures with redshift z >2.5.In the second part of the thesis, the simultaneous detection, I build a filter suited for extracting clusters (z<1.5) individually in the ROSAT data respecting the noise statitistics. This filter is also designed to be combined with the filter used for detecting clusters in Planck maps. Increasing the number of less massive clusters will be the final goal
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Guillout, Patrick. "Etude du contenu stellaire des cartographies en rayons X : Application aux observations du satellite ROSAT." Université Louis Pasteur (Strasbourg) (1971-2008), 1996. http://www.theses.fr/1996STR13120.
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Ce travail de these s'interesse a la composante stellaire detectee a basse latitude galactique par le satellite rosat lors de sa cartographie totale du ciel en rayons x. Nous discutons la contribution relative des differentes populations emettrices et montrons que les etoiles actives representent la majorite des sources x rencontrees dans le plan de la galaxie. L'etude d'un echantillon representatif de ces etoiles montre une bonne correlation entre l'activite de la couronne et celle de la chromosphere. Apres avoir developpe un modele permettant de predire le contenu stellaire des cartographies en rayons x, les predictions de ce dernier sont comparees avec nos observations dans deux regions tests proches du plan galactique. Ces comparaisons sont alors mises a profit pour apporter de nouvelles contraintes sur certains parametres d'evolution galactique. Cette etude prise dans son ensemble montre que les observations stellaires en rayons x s'inserent parfaitement dans un scenario d'evolution physique et dynamique des etoiles tel qu'il nous est apparu au cours des dernieres decennies. Ainsi, la cartographie totale du ciel en rayons x de rosat, alliee a notre modele, constitue un ensemble base de donnees outil d'interpretation performant pour selectionner et etudier un grand ensemble d'etoiles tres jeunes. Cette methode permet en outre une grande fiabilite de selection grace a un taux de contamination par des etoiles vieilles extremement faible
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Blerot, Bernard. "Biosynthèse des composés odorants chez différents Pelargonium utilisés pour la production d'huile essentielle." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSES003/document.
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Pelargonium sp., appelé aussi « géranium » à odeur de rose ou « Géranium rosat » est l’une des plantes aromatiques et médicinales les plus cultivées au niveau international, essentiellement pour son huile essentielle (HE), utilisée par les industries des cosmétiques et de la parfumerie. Cette essence est extraite des feuilles par distillation vapeur et donne une HE riche de plusieurs centaines de molécules volatiles. Cette complexité est le résultat d’un long processus évolutif et de sélections variétales. Parmi ces composés volatils, les monoterpènes comme le géraniol, le citronellol et l’isomenthone, ou les sesquiterpènes comme le 10- γ-épi-eudesmol et le 6,9-guaiadiène, jouent un rôle prépondérant dans le parfum du Pelargonium. Les proportions relatives de ces différents composés sont d’ailleurs utilisées comme marqueurs de la qualité de l’HE et déterminent la typicité du parfum des différents cultivars et origines (P. cv. ‘rosat Bourbon’, P. cv. ‘rosat Chine’, P. cv. ‘rosat Égypte’ et P. cv. ‘rosat Grasse’). Malgré de très nombreux travaux portant sur la chimie de cette HE, il n’existe aucune information sur les voies de biosynthèse de ces molécules et aucun gène intervenant dans ces voies n’a été isolé. Durant cette thèse, nous avons cloné et caractérisé fonctionnellement par expression et purification des protéines recombinantes chez Escherichia coli des gènes codant les enzymes clés de ces voies de biosynthèse, les terpène synthases. Nous avons ainsi pu caractériser quatre terpène synthases, dont une géraniol synthase mono-produit. Nous avons isolé deux autres monoterpène synthases multi-produits, produisant pour l’une majoritairement du myrcène mais aussi trois autres monoterpènes, et pour l’autre majoritairement du 1,8-cinéole ainsi que 10 autres monoterpènes minoritaires. Enfin, une sesquiterpène multi-produit, la 10-γ-épi-eudesmol synthase, a été caractérisée. Nous avons ensuite analysé l’expression de la géraniol synthase et de la 10-γ-épi-eudesmol synthase dans différentes accessions de Pelargonium par RT-qPCR et nous avons montré la relation entre la capacité de production des différents composés volatils et le niveau d’expression dans les feuilles de ces deux terpène synthases. L’efficacité de la transformation génétique du Pelargonium par Agrobacterium tumefaciens étant élevée, des expériences de transgénèse ont aussi été réalisées afin de compléter la caractérisation fonctionnelle des gènes isolés. Dans une deuxième partie, nous avons réalisé l’analyse des essences produites par 64 espèces et cultivars de Pelargonium d’odeurs très diverses (citron, menthe, rose, abricot, pin, épices…). A l’aide d’analyses statistiques (ACP, analyse discriminante…), nous avons mis en évidence des relations entre la biochimie de ces cultivars, leurs odeurs et leurs proximités génétiques et cela afin de nous donner des pistes sur des croisements potentiellement intéressants. Enfin, un dernier chapitre est consacré à l’amélioration de la production d’HE en Égypte. Grâce à ce programme commencé il y a trois ans, nous améliorons chaque année la qualité et le rendement en HE de plus de 10 Ha de plantation de Pelargonium en Égypte. Un travail d’optimisation de la distillation ainsi que des améliorations des pratiques culturales, nous ont permis de produire une HE de qualité avec un rendement de plus de 60 kg.Ha-1 d’HE. D’autres expériences présentées dans ce chapitre soulignent l’influence de l’environnement et notamment de la température sur le ratio entre le citronellol et le géraniol ainsi que sur la biosynthèse de l’isomenthone, du 10-γ-épi-eudesmol et du 6,9-guaiadiènePelargonium sp, also named rose scented « geranium » or « Geranium rosat » is one of the the most cultivated aromatic and medicinal plant worldwide, especially for its essential oil (EO), which is used by cosmetic and perfumery industries. This essence is extracted from leaves by steam distillation and gives an EO containing several hundreds of organic volatile compounds (VOC). This complexity is the result of a long evolutive process and varietal selections. Among these VOC, the monoterpenes like geraniol, citronellol and isomenthone and the sesquiterpenes like 10-γ-epieudesmol and 6,9-guaiadiene, play an important role for the Pelargonium fragrance. The relative proportions of these compounds are used as EO quality markers and determine the different cultivars origins (P. cv. ‘rosat Bourbon’, P. cv. ‘rosat Chine’, P. cv. ‘rosat Egypt’ and P. cv. ‘rosat Grasse’). Despite the important researches on the chemistry of these EO, there is no information on the biosynthesis pathways for these molecules and no genes involved in the pathways have been isolated. During this PhD thesis, we have functionally characterized by recombinant proteins expression and purification in Escherichia coli, four genes, three monoterpene and one sesquiterpene synthases, coding for key enzymes in terpene biosynthesis pathway. The first enzyme is a mono-product geraniol synthase. The second enzyme is a multi-product enzyme with a major peak of myrcene and 3 minor peaks of other monoterpenes. The third enzymes is also a multi-product protein, producing 1,8-cineol as major product and 10 others monoterpenes. The last one is a multi-products sesquiterpene synthase producing mainly the 10-γ-epi-eudesmol and other sesquiterpenes. We have also analyzed the level of expression of the geraniol and 10 γ-epi-eudesmol synthases in several Pelargonium accessions by RT-qPCR and we have demonstrated the relationship between the level of expression of these two terpene synthases and the quantity of the related terpenes produced in leaves. Pelargonium transformation efficiency by Agrobacterium tumefaciens was tested in order to complete the functional characterization of the genes. In a second part, we have analyzed the essence of 64 species and cutivars of Pelargonium having very different fragrances like lemon, mint, rose, apricot, pine, spices… With different statistical tools (PCA, discriminant analysis…), we have highlighted the links between the biochemistry of these species and cultivars, their odors and their phylogenetic relationships. This worked gave us some interesting ideas for some new crossings. Finally, the last chapter concerns the EO production improvements in Egypt. Thanks to these researches, started 3 years ago, we are improving year after year our EO yield and quality in our 10 Ha R&D plantation. An important work was done to optimize the distillation process and improve the agricultural practices which abled us to reach a yield of 60 kg of EO per hectare. Some other experiments show the effect of the environmental factors such as the temperature on the biosynthesis of several important molecules like citronellol and geraniol, 6,9-guaiadiene and 10-γ-epi-eudesmol
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Ebeling, Harald. "Abell and ACO clusters of galaxies in the ROSAT all-sky X-ray survey a statistical study /." Garching bei München, Germany : Max-Planck-Institut für extraterrestrische Physik, 1993. http://catalog.hathitrust.org/api/volumes/oclc/30536511.html.
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Thesis (Ph. D.)--Ludwig-Maximilians-Universität München, 1993."Dezember 1993." "Original English version of a dissertation submitted in German." Includes bibliographical references (p. 165-168).
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Chakib, Soundouss. "Les essences de géranium : influence pédoclimatique et saisonnière sur les essences marocaines. Classification par les méthodes d'analyse de données." Aix-Marseille 3, 1998. http://www.theses.fr/1998AIX30076.
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Les essences de geranium presentent un grand interet en parfumerie et en cosmetologie, du fait de leur similitude avec les essences de rose. Le present travail a consiste a identifier par l'analyse en couplage chromatographie en phase gazeuse-spectrometrie de masse la majorite des constituants chimiques des essences du maroc et de la reunion. L'analyse de la fraction basique de l'essence de la reunion a revele l'existence de nouveaux composes azotes. Dans la fraction acide de cette essence, nous avons identifie de nouveaux acides en plus de ceux trouves dans la litterature. L'etude comparative de la composition chimique des essences de geranium cultivees dans cinq differentes regions du maroc et recoltees a differentes periodes de l'annee, nous a permis de mettre en evidence l'influence des conditions pedoclimatiques sur la production et la qualite de ces essences. Les resultats obtenus ont ete confirmes par l'application d'une analyse de donnee multidimensionnelle (acp). Il existe des variations significatives dans la composition chimique des essences de diverses origines (reunion, chine, egypte, maroc, tunisie, australie, tadjikistan et madagascar), ce qui nous a permis de determiner des criteres de differenciation entre ces differentes essences. Enfin, ces criteres de differenciation determines nous ont permis de classer en quatre groupes 80 echantillons d'essences de geranium issues soit de nos resultats, soit du commerce, soit de la litterature par les methodes d'analyses multidimensionnelles (acp et afd). Nous avons pu affecter des essences de geranium d'origines connues ou inconnues a chacun de ces groupes. Cette etude apporte une contribution interessante a la classification des essences de geranium d'origines diverses.
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Agüeros, Marcel A. "Candidate isolated neutron stars and other stellar x-ray sources from the ROSAT all-sky and Sloan Digital Sky Surveys /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5436.
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West, Richard Granville. "A study of the background and of diffuse and extended XUV emission in the ROSAT Wide-Field Camera all-sky survey." Thesis, University of Leicester, 1993. http://hdl.handle.net/2381/35820.
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This thesis presents the results of a study of the characteristics and the origins of the background components in the ROSAT Wide-Field Camera. Contributions from six distinct sources have been positively identified: 1) cosmic rays and other high-energy (E ~ 1 MeV) charged particles, 2) low-energy (E ~ 50keV) electrons in the auroral zones, 3) a spacecraft glow phenomenon, similar to that observed on the Space Shuttle, but confined to the far-ultraviolet regime, 4) resonantly scattered Solar EUV line photons, for example He II 304A, 5) a charged particle component from an unidentified source (possible ring current precipitation), and 6) intrinsic noise in the WFC microchannel plate detectors. In addition, the results of a search for positively idenfitiable signatures from the diffuse XUV background are presented. No features have been identified in the background, which places a strong upper limit on the diffuse flux which is nearly an order of magnitude lower than that implied from previous surveys in this waveband. This finding has serious implications for the displacement model of the local interstellar medium. An analysis of the WFC images of the Vela and Cygnus Loop supernova remnants is also presented. The WFC survey data from the Vela SNR are combined with data taken with the ROSAT PSPC in a spatially resolved joint spectral fitting effort, work which is made possible only by the quality of the PSPC data. The results show for the first time that two gas phases are present at distinct temperatures with differing spatial distributions, and that the variations in the X-ray temperature across the remnant inferred in previous (single temperature) analyses are probably due to changes in the emission measure ratio of the two components.
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Klutsch, Alexis. "Caractérisation physique et cinématique de la population d'étoiles actives en rayons X au voisinage solaire." Phd thesis, Université Louis Pasteur - Strasbourg I, 2008. http://tel.archives-ouvertes.fr/tel-00372466.
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Ce travail de thèse présente la caractérisation physique et cinématique des étoiles actives en rayons X et présumées jeunes du voisinage solaire qui sont les contreparties optiques (catalogue Tycho) des sources X du relevé ROSAT All-Sky Survey. Lors de notre programme d'observations spectroscopiques à haute résolution, plus de 800 étoiles tardives furent observées et un total de plus de 1600 spectres a été obtenu. La majorité des paramètres stellaires a été dérivée de ces spectres en utilisant des spectres synthétiques et la méthode de corrélation croisée. Il s'avère que cet échantillon se compose principalement d'étoiles jeunes ayant un âge inférieur au milliard d'années et d'une importante fraction de systèmes multiples spectroscopiques. De nouveaux membres de courants bien connus dont 5 très bons candidats post-T Tauri furent découverts lors de l'analyse de la cinématique avec nos deux méthodes probabilistes. Une nouvelle concentration d'étoiles jeunes (semblable à l'association TW Hydra) a été détectée dont les étoiles ont un âge de 50 - 100 Ma et sont localisées dans l'hémisphère nord. Contrairement aux hypothèses courantes, la contamination par des étoiles évoluées n'est pas négligeable. La modélisation faite de leur contribution dans le modèle de population stellaire en rayons X de Besançon reproduit assez bien les ordres de grandeurs observés.
Par la suite, cette étude permettra une meilleure compréhension de l'histoire récente de la formation d'étoiles dans l'environnement proche du Soleil.
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Ferrero, Frédéric. "Approche physio-pathologique et exploitation génétique de l'expression de la résistance à l'oïdium (sphaerotheca pannosa lev. , var. Rosae) dans le genre Rosa." Avignon, 2005. http://www.theses.fr/2005AVIG0314.
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L'oïdium du rosier est une maladie fongique foliaire, à lourdes conséquences économiques, provoquée par Sphaerotheca pannosa var. Rosae qui se développe sur l'hôte sans entraîner sa mort. Ce travail de thèse rapporte une étude en 4 étapes des relations hôte-parasite : 1- L'évaluation de l'expression des symptômes d'oïdium, dans une collection d'espèces botaniques et une de rosiers modernes. Elle a permis d'identifier des génotypes résistants. 2- Un programme de croisements pour évaluer la transmission de la résistance et les aptitudes à la combinaison. L'observation des ségrégations, sur les descendances d'un plan de croisement diallèle entre espèces 2x, a confirmé que le caractère de résistance était gouverné par plusieurs gènes. La démarche d'introgression de résistance, via un dihaploïde 2x de rosier moderne 4x, croisé avec R. Wichuraïana 2x, suivie de croisements frères–sœurs, s'est imposée pour fixer le caractère. 3- La recherche d'outils de criblage. Celle-ci a conduit à un test biologique d'évaluation de la résistance à l'oïdium et à des méthodes d'isolation et de maintien d'inoculum monoconidial. 4- L'étude de l'installation de la cuticule foliaire et de son efficience suivant : génotype, âge de l'organe et conditions d'environnement. Une méthodologie a été établie pour moduler l'installation de la cuticule sur des plantules issues d'in vitro. L'évapotranspiration cuticulaire de génotypes résistants a été mesurée inférieure à celle de sensibles. Enfin, une nutrition élevée en calcium activerait l'installation de la cuticule. En conclusion, l'ensemble de ces résultats contribue à la connaissance de la maladie et à la définition d'une stratégie pour la sélection du caractère de Résistance à l'oïdiumPowdery mildew of the rose tree induces heavy economic consequences. This disease is due to an external fungus Sphaerotheca pannosa var. Rosae that develops on the host without resulting in his death. This work of thesis points out a study in four steps of the relations host-parasite : 1- the evaluation of the expression of the symptoms of powdery mildew, in two collections, one of botanical species and another of modern rose trees. This approach allowed to identify resistant genotypes. 2- a program of crossings to evaluate the transmission of resistance and abilities for combination. The observation of the segregations, on the progenies from a diallele crossing plan between diploid species, confirmed that the character of resistance was controlled by several genes. The process for introgression of resistance, via a dihaploïd (2x) of modern rose tree (4x) cross with R. Wichuraïana (2x) followed with serial brother-sister crossings revealed as essential to fix the character. 3- the search for tools of sifting. This one led to a biological test of evaluation of resistance to powdery mildew and to methods for the isolation of the inoculum and following for the obtainment of mono-conidial isolates. 4- the study of the installation of the foliar cuticle and its efficiency according to : genotype, age of the organ and environmental conditions. A process was established to modulate the installation of the cuticle on plantlets resulting from in vitro. The cuticular evapotranspiration of resistant genotypes was measured lower than that of sensitive. At last, high calcium level in the nutrition of rose tree would activate the biosynthesis of the cuticle. In conclusion, the whole of these results contributes to the knowledge of the disease and to the definition of a strategy for the selection of the character of Resistance to powdery mildew
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Alkader, Fouad. "Culture in vitro du rosier : contribution à l'étude des relations hôte-parasite dans le cas du couple sphaerotheca pannosa var. rosae-rosa spp." Angers, 1993. http://www.theses.fr/1993ANGE0004.
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Un milieu de culture in vitro est mis au point pour la multiplication du rosier, valable pour 7 clones. Quatre sont utilisés pour l'étude des relations hôte-parasite dans le cas de sphaerotheca pannosa var. Rosae. Une différence de sensibilité est constatée chez ces clones à la suite de l'infection par l'agent pathogène. Deux sont sensibles sur lesquels le parasite sporule abondamment, un est résistant ou la sporulation du champignon est faible et un est très résistant sur lequel la sporulation est absente. Des points nécrotiques apparaissent sur tous les clones étudiés ils jouent un rôle très important dans la régression de la croissance et la disparition de l'agent pathogène chez les clones résistant et très résistant. Les observations histologiques et ultrastructurales ont montré que la formation d'appressoriums n'est pas obligatoire à la pénétration de s. Pannosa dans les cellules épidermiques. Le champignon, après sa pénétration forme un haustorium enveloppe par une membrane extrahaustoriale qui a pour origine le plasmalemme de l'hôte. Au sein de l'haustorium, on observe de nombreux lobes formes à partir du corps haustorial central par bourgeonnement. Les hôtes résistants sont riches en composes phénoliques qui encapsulent l'haustorium et provoquent sa nécrose. Au contraire, chez l'hôte sensible, et en l'absence de composes phénoliques, l'haustorium envahit une grande partie de la cellule épidermique, en particulier in vitro. Chez tous les hôtes, l'infection des cellules épidermiques provoque un ensemble de modifications au sein des cellules attaquées et des cellules adjacentes et sous-jacentes.
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Palma, Vargas Victoria. "Rosa Isaura." Tesis, Universidad de Chile, 2016. http://repositorio.uchile.cl/handle/2250/139385.
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OrfebreLa presente memoria nace como una síntesis de las inquietudes que fueron surgiendo a medida que formulaba mis proyectos como estudiante de pregrado, los que se gestaron como manifestaciones espontáneas de un eje común: el retrato como “inmortalización” del individuo, y cómo en este instante se captura nuestra eterna soledad. Estando consciente de la importancia de mantener la claridad ante el lector-espectador para facilitar la comprensión del presente proyecto de creación visual, es que he formulado el desarrollo de esta memoria en dos ejes centrales: uno teórico y otro visual; para ello he intentado ser lo más rigurosa posible y sintetizar de forma clara el proceso de aprendizaje personal que ha conllevado al descubrimiento de mi quehacer como artista visual, específicamente ligado al campo de la orfebrería y el dibujo.
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Vaz, Valteir Benedito. "\"Conversa de bois\", de João Guimarães Rosa: uma leitura à luz poética do próprio autor." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/8/8151/tde-06112012-114750/.
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O objetivo deste trabalho, num primeiro momento, foi extrair das 65 cartas que João Guimarães Rosa remeteu à sua tradutora para o inglês, Harriet de Onís, durante a tradução de Sagarana, as linhas gerais que configuram sua poética. Um breve panorama da gênese e da recepção deste livro, seguidos pelos comentários às mencionadas cartas, abriu nossa pesquisa. Depois disso realizamos uma análise do conto Conversa de bois, oitava narrativa de Sagarana, enriquecida pelas declarações do escritor na referida correspondência em torno do seu processo de criação. Para complementar a análise e esclarecer certas questões relativas à técnica compositiva do autor não tratadas especificamente em sua poética, recorremos a alguns conceitos-chave de pensadores de diferentes tradições que, embora desenvolvidos em épocas distintas, encontram seu lugar nesse estudo do universo heteróclito criado por JGR. Uma atenção especial foi dada ao Formalismo Russo (Roman Jakobson (1896-1982), Viktor Chklóvski (1896- 1984), Iuri Tyniánov (1894-1943) e Ossip Brik (1888-1945)) cujos preceitos muitos deles em consonância com a poética rosiana foram uma referência válida para a metodologia de nossa análise.The first, aim of this work was to draw the general lines that establish João Guimarães Rosas poetics from the 65 letters the author sent to his translator Harriet de Onís, during her English translation of Sagarana whose brief genetic and receptive panorama, together with Rosas epistolary remarks, open our research. After that, we performed an analysis of the short story Conversa de bois, Sagaranas eighth narrative, taking into consideration the mentioned writers informations about his creative process. To enlighten the analysis and clarify certain questions related to the author´s compositional technique, we made use of some key-concepts of thinkers from different traditions, which, in spite of belonging to different periods, found their place in this work about the heteroclite universe created by JGR. A special attention was given to Russian Formalism (Roman Jakobson (1896-1982), Viktor Chklóvski (1896-1984), Iuri Tyniánov (1894-1943) e Ossip Brik (1888-1945)) whose precepts many of them in consonance with Rosas poetics were a valid reference for the methodology of our analysis.
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Oliveira, Marcelo Freitas Ferreira de. "Rosa aurilavrada: figurações da utopia em A Rosa do Povo." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/8/8151/tde-13052014-104933/.
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Este estudo busca evidenciar a natureza utópica de A Rosa do Povo, explorando algumas das tensões que envolvem o processo de constituição do sujeito lírico, dentre as quais destaco: a problemática da projeção do sujeito para o espaço público da rua, em poemas que se tornam longos para dar lugar às diferentes vozes da coletividade, face ao resguardo de certa autonomia descompromissada do eu poético; as relações entre lírica e sociedade, diante das exigências político-sociais da década de 1940. Essas tensões são lidas sob o enfoque do conceito da utopia, que possibilita verificar, em cada poema analisado, uma mensagem poética específica, a um só tempo crítica e esperançosa. Ainda que cada composição seja lida como fragmento autônomo, os poemas também se articulam no conjunto da obra, simbolizada pela rosa. A interpretação dessa imagem, que se repete ao longo do livro e condensa a sua multiplicidade temática, permite ao leitor uma visão do todo. Procuramos demonstrar como esse processo de construção poética acaba por evidenciar também o uso simbólico de operações alquímicas, de modo que se possa compreender a obra como uma espécie de utopia alquimista, inserida que está num processo ininterrupto de materialização e desconstrução do canto, a refletir a concepção drummondiana acerca da precariedade do poético.The purpose of this research is to show the utopic nature of A Rosa do Povo, exploring some of the tensions that involve the development process of the liric subject in which among others I would highlight: the projection of the public space in poems that last long to make possible a multiplicity of voices of colective, in face of the uncompromissed autonomy of the poetic subject; the acqward relationship between liric and society, in face of the social politcs needs of the 1940 forties. These tensions are understood, over the concept of the utopic society, that allows us to verify, in each of the researched poem, a specific poetic message, at the same time critic and full of hope. Even understood as an autonom fragment, each one of the poem gather in the whole of the book, represented by the \"rose\". This image interpretation, that come over all long the book, condense the tematic multiplicity and allows the reader a sight of the whole of the book. We seek to demonstrate how this process of poetic construction ends up also highlighting the symbolic use of alchemical operations so that we can understand the work as a kind of \'alchemist utopia\', part of an uninterrupted process of materialization and deconstruction of the poem, that reflects the drummondianas conception of the precariousness of the poetic.
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Kepka, Emma. "En rosa norm." Thesis, Malmö universitet, Fakulteten för kultur och samhälle (KS), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-21163.
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Denna uppsats ämnar undersöka, problematisera och diskutera användningen av färgenrosa på feministiska kommunikationsbyråers hemsidor genom en diskursanalys. Det försäven ett resonemang kring vad användningen av rosa i denna kontext har för följder fördiskursen om färgen rosa och/eller feminism. Uppsatsen ska bidra till att ifrågasättanormer och strukturer inom en feministisk diskurs med avstamp i ett normkritisktperspektiv. Övriga teorier som underbygger analysen är bland annat Stuart Halls teorierom representation, Gillian Roses diskursteori, samt Yvonne Hirdmans resonemang omgenus. Resultatet redogör för en mångfacetterad tolkning av färgen, samt attanvändningen av färgen rosa blir en symbol för kommunikationsbyråernas feministiskaställningstagande. Användningen både upprätthåller och bryter normer om femininitetgenom att färgen blir en motsättning till maskulinitet.
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Cúrcio, Verônica Ribas. "Palavras de Rosa." reponame:Repositório Institucional da UFSC, 2013. https://repositorio.ufsc.br/handle/123456789/107071.
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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão, Programa de Pós-Graduação em Literatura, Florianópolis, 2013.Made available in DSpace on 2013-12-05T23:08:19Z (GMT). No. of bitstreams: 1 317552.pdf: 1307621 bytes, checksum: 26c7deab395b3b7fbd0ef578a53322b1 (MD5) Previous issue date: 2013
Nesta tese analisamos a obra literária de João Guimarães Rosa a partir da estilometria, com o objetivo de buscar as características do estilo rosiano que sejam possíveis de detectar por meio de ferramentas informatizadas de análise estatística. Nossa tese é verificar se esse tipo de estudo permite confirmar ou complementar intuições derivadas de leituras convencionais e, além disso, oferecer novos elementos textuais e estilísticos que nem sempre estão explícitos no texto. Para isso, privilegiaremos três estudos rosianos: Signo e sentimento (SPERBER, 1982) sobre a organização da linguagem de Rosa; O insólito em Guimarães Rosa e Borges (COVIZZI,1978), a qual propõe uma linha cronológica de expressão e explicação da obra rosiana; João Guimarães Rosa: travessia literária, (DANIEL, 1968), que afirma haver uma separação do léxico rosiano em duas fases: uma rural e outra urbana. A ferramenta estatística adotada foi o programa Hyperbase, de Étienne Brunet. Para os procedimentos de análises, trabalhamos com duas bases, uma com a cronologia de produção de escrita das obras e outra seguindo a cronologia de primeira publicação das obras, que foram respeitadas a fim de viabilizar a verificação da evolução e do crescimento do vocabulário do escritor. Levantamos muitas características do léxico rosiano, dentre elas verificamos que mais da metade de seu vocabulário não se repete; e que as obras de caráter sertanejo apresentam vocabulário menos diversificado. Por fim, veremos como Guimarães Rosa, ao final de sua carreira literária, tratou mais do seu material linguístico.
Résumé : Cette thèse s'occupera de l'oeuvre littéraire de João Guimarães Rosa à partir de la stylométrie, ayant pour objectif la recherche de caractéristiques du style de l'auteur qui puissent être identifiées par moyen d'outils informatisés d'analyse statistique. Notre thèse consiste à verifier si ce type d'étude permet de confirmer ou d'enrichir des intuitions résultantes de lectures conventionnelles et aussi à offrir de nouveaux éléments textuels et stylistiques qui ne sont pas toujours explicites dans le texte. Pour cela, on privilégiera trois études sur l'écrivain : Signo e sentimento (SPERBER, 1982), texte sur l'organisation du langage de Rosa ; O insólito em Guimarães Rosa e Borges (COVIZZI, 1978), qui propose une frise chronologique de l'expression et explication de l'oeuvre de Rosa ; João Guimarães Rosa, travessia literária, (DANIEL, 1968), selon laquelle il y a deux phases concernant le lexique de l'écrivain : l'une rurale et l'autre urbaine. L'outil statistique adopté a été le logiciel Hyperbase, d'Étienne Brunet. Pour le procédés d'analyse, on a travaillé avec deux bases, à savoir, l'une qui contenait la chronologie de production d'écriture des oeuvres ; l'autre, la chronologie de la première publication des oeuvres, considérée dans ce travail afin de rendre possible une investigation effective de l'évolution et de l'expansion du lexique de l'auteur. Parmi la grande quantité de donnéés recuillies, on a pu constater que plus de la moitié de son lexique ne se répète pas. En outre, les oeuvres "sertanejas" présentent moins de variations lexicales. Pour conclure, on démontrera comment Guimarães Rosa, à la fin de sa vie, s'est occupé davantage de son matériel linguistique.Mots clés: Guimarães Rosa. Stylométrie. Statistique textuel.
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Bravo, Camacho Jocelyne. "Evaluación del enraizamiento de Rosa silvestre (Rosa montezumae Humb. & Bonpl.) como alternativa para portainjerto de rosa comercial." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2021. http://hdl.handle.net/20.500.11799/112329.
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Rosa montezumae (Humb. & Bonpl.), es una especie naturalizada cuyas poblaciones han mermado drásticamente, atribuido a cambios del uso del suelo y presión por presencia de poblaciones de plantas invasivas. El objetivo de esta investigación fue evaluar el enraizamiento de estacas de R. montezumae para su aprovechamiento como portainjerto. La investigación se llevó a cabo en los invernaderos del Centro Universitario Tenancingo de la Universidad Autónoma del Estado de México. De tallos de la especie de interés y dos testigos, R. hybrida cultivar “Natal Briar” y R. indica (tratamientos), se emplearon estacas de 16 cm de longitud y de 0.8 cm de grosor promedio, con tres yemas, los cuales se evaluaron en cuatro experimentos independientes con variación en el sustrato de enraizamiento. Se hicieron dos experimentos preliminares definidos como Experimento Preliminar 1 (EP1) y Experimento Preliminar 2 (EP2) y dos formales definidos como Experimento 1 (E1) y Experimento 2 (E2). El EP1 incluyó arena fina azul de construcción y el EP2 suelo de la región y composta en relación 2:1 (v/v), con estacas pretratadas con baja temperatura (4 °C) durante 30 días. El E1 incluyó también suelo de la región y composta en relación 2:1 (v/v) pero con estacas sin tratamiento por frío; mientras que el E2 fue de una mezcla tierra de monte, turba y agrolita en una relación 1:1:1 (v/v), previamente analizado a pH, conductividad eléctrica, porosidad y retención de humedad. Se utilizaron 200 estacas para los tratamientos preliminares (100 por cada tratamiento) siendo cada estaca la unidad experimental. Para E1 y E2 las estacas se establecieron en un diseño experimental de bloques completos al azar con cinco repeticiones, la unidad experimental fue una planta. Por tratamiento se tuvieron 20 estacas. Las condiciones ambientales promedio en invernadero para todos los experimentos fueron temperatura de 24 ºC y humedad relativa de 68 % (. Se evaluaron las variables porcentaje de callo a las cuatro semanas (28 días), enraizamiento a los 30 días y longitud de brote apical a los 30 días. Los resultados obtenidos en los tratamientos, el primero mostró una emisión de brote de yema apical de un 80 % del total de estacas durante los primeros 15 días, después de ese tiempo manifestaron amarillamiento y muerte, tan solo 23 estacas sobrevivieron de las cuales hubo emisión de callo y raíz alcanzando una longitud promedio de 0.7 cm el tiempo de vida de este material vegetativo fue de 45 días, mientras que el tratamiento con pre enfriamiento a 4 °C se obtuvo el encallamiento del 60 % de las estacas durante los primeros ocho días, que paralelamente se oxidaron. Tan solo el 8 % de las estacas sometidas al tratamiento tuvieron un desarrollo promedio de 40 % de callo, así mismo, la longitud de raíz alcanzada fue de 3.5 cm y yema apical de 1.7 cm, sobreviviendo tan solo 15 días después de establecidas bajo condiciones de invernadero. Los experimentos indicaron diferencias significativas (p=0.05) entre especies en formación de callo y enraizamiento, denotándose retraso o no emisión de brote en R. montezumae en ambos experimentos, durante el registro de las variables evaluadas del primer experimento se notó un decrecimiento donde finalmente los porcentajes de sobrevivencia fueron para R. hybryda “Natal Briar” de 50 %, R. indica 22 % y R. montezumae 1 %, en comparación del segundo experimento que desencadenaron mortandad de estacas en un 75 %, contrario a los testigos “Natal Briar” y R. indica que presentaron mortandad de 6 y 27 % respectivamente. Las estacas sobrevivientes de R. montezumae se llevaron a injerto con rosa comercial para evaluación de calidad de tallo floral. La especie con mayor porcentaje de prendimiento fue R. indica, aunque en R. hybrida “Natal Briar” se observó el crecimiento por debajo de R. indica. Contrariamente R. montezumae no tuvo prendimiento de la yema injertada. El resultado en los testigos no fue acorde a lo observado en el campo, donde el porcentaje de prendimiento está por arriba del 90 %. Mientras que en R. montezumae, no se encuentran registros ya que es una especie silvestre y estos son los primeros resultados. Con ello se concluye que la especie R. montezumae tiene dificultades en la reproducción asexual, lo cual no sería de utilidad al productor. Se planea un estudio fisiológico-bioquímico de la planta que permitan mejorar su propagación.
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Cagenius, Eric. "ICA är Rosa! : En studie av ICA:s reklamfilmer för Rosa Bandet." Thesis, Stockholms universitet, Institutionen för mediestudier, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-165562.
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Syftet med denna studie är att undersöka hur ICA i sina reklamfilmer för Rosa Bandet-kampanjen de årligen genomför i samarbete med Cancerfonden framställer sig själva och vilken retorik som används för att övertala mottagaren. Genom att genomföra en kvalitativ innehållsanalys med hjälp av en kombinerad semiotisk och retorisk metod kommer dessa frågeställningar kunna besvaras. Kommutationstest kommer att genomföras på var och en av de tre filmer som studeras, för att se vilka paradigm i filmerna som är av störst vikt för att filmerna lyckas kommunicera sina budskap. Den genomförda analysen visar att alla tre filmer sätter ICA i centrum, och deras goodwill-arbete lyfts fram. Istället för att agera insamlande eller att informera tittarna om hur de konkret kan gå tillväga för att stötta Cancerfonden, framstår filmerna överlag som ett PR-jippo för ICA. Filmerna drar nytta av att vara en del av en långt pågående serie som visats på TV i över 17 år, genom att låta karaktärerna som tittaren till viss del förutsätts känna igen, spela en stor roll i filmerna. Det är karaktärerna som lägger grunden för den komik, känslomässiga utveckling och förtroendeingivande moment som sker i filmerna.
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Ribeiro, Maria José. "As rosas de Clarice Lispector." Florianópolis, SC, 2006. http://repositorio.ufsc.br/xmlui/handle/123456789/88556.
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Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Comunicação e Expressão. Programa de Pós-Graduação em LiteraturaMade available in DSpace on 2012-10-22T10:33:49Z (GMT). No. of bitstreams: 0
As rosas de Clarice Lispector: travessia e transfiguração - investiga o espaço entre a personagem e seu Outro, na obra da autora. O Outro em questão é a rosa, que surge como individualidade nos textos estudados. Nesse espaço marcado pelo movimento, ergue-se uma abordagem dos problemas sociais, um olhar para o mundo, na obra de Lispector. Defende-se que esse pensamento voltado para o mundo pode ser observado ao longo de toda a sua trajetória literária longa travessia -, até a publicação de A hora da estrela, seu último romance, com temática nitidamente social. O encontro com a flor é sempre marcante para os personagens, levando-os, às vezes, à transformação do ser em rosa. Entre eles e a flor, a autora edifica a realidade. Clarice Lispector s roses: passage and transformation - analyzes the space between the personage and the Other, in the work of the author. The Other is the rose, that grows up as a personality in these texts. In this moving space, appears an approaching of the society problems, a look to the world, in Lispector s work. This look exists during all Lispector s literary trajectory long passage -, till the publication of The Hour of the Star, Lispector s last romance, with social thesis. The encounter with the flower is always important to the personage, sometimes leading him till the transformation in the rose. Between the personage and the rose, the author edifies the reality.
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Pinto, Jacqueline Bernuci. "Tecnologia pos colheita : armazenamento de rosas cultivar "vegas"." [s.n.], 1997. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257372.
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Orientador: Sylvio Luis HonorioDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Agricola
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Resumo: floricultura é uma das atividades agrícolas que vêm alcançando grande destaque, não só do ponto de vista tecnológico, como econômico. O mercado de flores no Brasil é rentável e bastante interessante por ser muito pouco explorado. A rosa, uma das principais flores de corte cornercializada no País, por ser uma flor tradicional de consumo, é cultivada em quase todos os municípios produtores de flores. O produto ainda não tem a qualidade desejada para a exportação, apesar de ser uma das flores cortadas de maior consumo mundial. A qualidade do produto que chega ao mercado consumidor está intimamente ligada aos tratos pós-colheita, onde se encontram grandes perdas de importante significado do ponto de vista econômico? iniciando-se no momento da retirada do produto do campo até a preparação para o consumo final. No presente trabalho as flores foram submetidas a um processo de reidratação como técnica pós-colheita, isto é, após serem colhidas, foram colocadas em água e armazenadas à temperatura adequada em câmara ftia sob variadas condições (seco ou úmido com ou sem o uso de solução conservante e com o uso de embalagens de polietileno ou papel ondulado). Os resultados dos tratamentos foram comparados aos resultados do procedimento tradicional póscolheita dos produtores locais, visando a manutenção de boa aparência e maior durabilidade dos produtos. Ainda foi calculado o calor específico em rosas, com o intuito de fornecer subsídio necessário para trabalhos futuros e auxiliar no dimensionamento adequado de um sistema de resftiamento para flores
Abstract: Floriculture is one of the agricultural activities that is emerging more and more, not only as to the tecnological point of view but also economical. The Brazilian flower market isprofitable and very interesting because of its small exploration.The rose is one of the main cutting flower commercialised in Brazil, because it is atradicional consumer' s tlowers and is cultivated in almost alI the flower producingmunicipalities. The product does not yet have the desired export quality, notwithstanding the fact that it is the most sold cutting flower in the world.The quality of the product that arrives on the consumer's market is closely related to post harvest treatments, where they suffer great important loss that is significant to the economical point of view, initiating when the product is harvested on the field until the final consumer' s preparation.In this research the flowers underwent a dehydration process as a post-harvesttreatment. After the tlowers were harvested they were kept and stocked in coolhouses, in water at an adequate temperature with different conditions. (dry or humid; with or withoutconserving solution; and with the use of packing materiais like polyethylene or ribbed paper). The treatment results were compared to the traditional post harvest and durability of the products.The specific heat of roses were also calculated to subsidese futures works on the dimensioning of a cooling systems for flowers
Mestrado
Pre-Processamento de Produtos Agricolas
Mestre em Engenharia Agrícola
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Stessuk, Sílvio José [UNESP]. "Magma: breviário de rosa." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/103670.
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stessuk_sj_dr_assis.pdf: 4372668 bytes, checksum: 22491dc7d4602180c3025d6ebde93b2e (MD5)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Magma é o volume de poemas que marcou a estréia literária de João Guimarães Rosa, tendo no entanto permanecido inédito por mais de sessenta anos e sido até o momento relegado à marginalidade pela maior parte da crítica. O presente trabalho tem como objetivo contribuir para o resgate desse livro, bem como levantar, no discurso do mesmo, elementos úteis para o reconhecimento da sua inserção ideológica no conjunto da obra do autor. Com esse intento, procede-se à análise do universo simbológico plasmado por seus textos componentes, através do que se consegue identificar em Magma a inquietação anagógica que é o cerne da literatura rosiana.
Magma is the poems volume that set out the literary debut of João Guimarães Rosa, although have stayed inedited over sixty years and until now have been discarded by the majority of the critique. The aim of the present work is to contribute to the ransom of that book and to find in its discourse able factors to its insertion into the whole author production. With that purpose, is accomplished the analysis of the symbological universe shaped by its component texts, with what is possible to identify in Magma the anagogical inquietud that is the pith of the Guimarães Rosa literature.
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Nogueira, Erich Soares 1971. "Vocalidade em Guimarães Rosa." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/269873.
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Orientador: Adélia Toledo Bezerra de MenesesTese (doutorado) - Universidade Estadual de Campinas, Instituto de Estudos da Linguagem
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Resumo: Esta tese de doutorado investiga a vocalidade na obra de Guimarães Rosa. O conceito de vocalidade, definido a partir dos trabalhos de Paul Zumthor, considera a voz não apenas como suporte ou veículo sonoro da palavra, mas também como manifestação de sentido que reverbera aquém e além da palavra. No texto literário de Guimarães Rosa, a dimensão da vocalidade é trabalhada no próprio corpo sensório da palavra poética, que produz feixes de sentido que escapam às determinações da linguagem e, dessa maneira, conseguem aludir ao que seria indizível no sertão rosiano. Além disso, as mais variadas e estranhas vozes escutadas nesse sertão ocupam um lugar central no desenvolvimento de algumas narrativas, como "Meu tio o Iauaretê", "Buriti" e "O recado do morro", que são detidamente analisadas. Em "Meu tio o Iauaretê", a vocalidade alia-se à questão da animalidade no decorrer da metamorfose do narrador em onça, cuja fala é continuamente atravessada por ruídos aquém do humano, quando a linguagem corre o risco de ser devorada pela irrupção de uma voz animal. Em "Buriti", a voragem sonora das noites do sertão é apreendida pela escuta hipersensível da personagem Chefe Zequiel, capaz de alcançar um núcleo insondável da noite, uma "voz de criatura" que mal resvala o sentido, mas que será revertida no erotismo pujante dessa novela. Em "O recado do morro", um recado enviado pelo Morro da Garça vai se formulando de modo fragmentado e confuso, à medida que é passado e alterado por sete mensageiros. Essa transmissão depende do entusiasmo (enthousiasmós, em grego = com um deus dentro de si) que se manifesta na voz das personagens para além das palavras do recado, até ele se organizar e se revelar na forma de um poema cantado. Por fim, essas questões são retomadas e expandidas com o objetivo de mostrar como a vocalidade ganha extensão em outras narrativas de Guimarães Rosa e elabora a seu modo importantes eixos temáticos dessa obra ficcional
Abstract: This doctoral thesis investigates the vocality in the work of Guimarães Rosa. The concept of vocality, defined from the works of Paul Zumthor, considers the voice not just as a support or a sonorous vehicle of the word, but also as a manifestation of meaning that reverberates beneath and beyond the word. In Guimarães Rosa¿s literary text, the dimension of vocality is crafted into the sensory body of the poetic word itself, which produces sheafs of meaning that escape the determinations of language and thus can allude to what would be unspeakable in Rosa¿s backlands. Furthermore, the most varied and strange voices heard in this backlands occupy a central place in the development of some narratives, such as "Meu tio o Iauaretê" ["My uncle the Iauaretê"], "Buriti" and "O recado do morro" ["The message of the hill"], which are analyzed in detail here. In "Meu tio o Iauaretê", the vocality blends with the question of animality throughout the metamorphosis of the narrator in a jaguar, whose speech is continually punctuated by noises short of the humanity, when language is in danger of being devoured by the irruption of an animal voice. In "Buriti", the sonorous maelstrom of the nights in the backlands is grasped by the hypersensitive hearing of the character Chefe Zequiel, able to reach an unfathomable core of the night, a "creature¿s voice" that barely brushes meaning but that will be converted in the vigorous eroticism of this novella. In "O recado do morro", a message sent by the Morro da Garça [Heron Hill] formulates itself in a fragmented and confused fashion along the way as it passes through and is altered by seven messengers. This transmission depends on the enthusiasm (in Greek, enthousiasmós = having a god within you) that manifests itself in the voices of the characters beyond the words of the message, until it is organized and unfolds in the form of a sung poem. Finally, these issues are taken up and expanded with the goal of showing how the vocality gains amplitude in other narratives of Guimarães Rosa and elaborates in its own way important thematic axes of this fictional work
Doutorado
Teoria e Critica Literaria
Doutor em Teoria e História Literária
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Souza, Maria do Perp?tuo Socorro Guterres de. "Guimar?es Rosa: travessia." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br/handle/123456789/19637.
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Este trabalho desenvolve uma leitura por cinco contos de Guimar?es Rosa: ?A hora e vez de Augusto Matraga?, ?Campo Geral?, ?A Benfazeja?, ?Esses Lopes? e ?Meu tio o Iauaret??, inclusos respectivamente em Sagarana, Corpo de Baile, Primeiras Est?rias, Tutam?ia e Estas Est?rias. Assim, empreende-se um breve percurso no intuito de observar na g?nese criativa do autor uma tem?tica manique?sta, em cuja concep??o do mundo, com intensividade po?tica, op?e-se o bem e o mal. Para tanto, a pesquisa respalda-se na Simbologia M?tica, na Cr?tica Liter?ria e em Aspectos da Metafisica, al?m da an?lise de cl?ssicos ensaios liter?rios, na abordagem da estrutura dessas hist?rias. Busca-se demonstrar que no sert?o rosiano, o contradit?rio contribui para especula??o sobre o homem humano, na aprendizagem cont?nua de sua travessia
This study develops a reading of five tales of Guimar?es Rosa: ?A hora e vez de Augusto Matraga?, ?Campo Geral?, ?A Benfazeja?, ?Esses Lopes? and ?Meu tio o Iauaret??, included, respectively, in Sagarana, Corpo de Baile, Primeiras Est?rias, Tutam?ia and Estas Est?rias. Then, undertakes a brief course in order to observe in the creative genesis of the author a manichean theme, whose view of the world, with poetic intensity, opposes the good and the evil. This research thus has drawn upon the Mythical Symbolism, in Literary Criticism and aspects of Metaphisics, in addition to analyzing classic literary essays in approaching of histories masterpiece structure. It has also demonstrate that in the rosiano hinterland the contradictory contributes to the speculation about the human man, in the continuous learning of his passing
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Stessuk, Sílvio José. "Magma : breviário de rosa /." Assis : [s.n.], 2006. http://hdl.handle.net/11449/103670.
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Orientador: Igor RossoniBanca: Suzi Frankl Sperber
Banca: Evelina de Carvalho Sá Hoisel
Banca: José Carlos Zamboni
Banca: Jeane Mari Sant'Ana Spera
Resumo: Magma é o volume de poemas que marcou a estréia literária de João Guimarães Rosa, tendo no entanto permanecido inédito por mais de sessenta anos e sido até o momento relegado à marginalidade pela maior parte da crítica. O presente trabalho tem como objetivo contribuir para o resgate desse livro, bem como levantar, no discurso do mesmo, elementos úteis para o reconhecimento da sua inserção ideológica no conjunto da obra do autor. Com esse intento, procede-se à análise do universo simbológico plasmado por seus textos componentes, através do que se consegue identificar em Magma a inquietação anagógica que é o cerne da literatura rosiana.
Abstract: Magma is the poems volume that set out the literary debut of João Guimarães Rosa, although have stayed inedited over sixty years and until now have been discarded by the majority of the critique. The aim of the present work is to contribute to the ransom of that book and to find in its discourse able factors to its insertion into the whole author production. With that purpose, is accomplished the analysis of the symbological universe shaped by its component texts, with what is possible to identify in Magma the anagogical inquietud that is the pith of the Guimarães Rosa literature.
Doutor
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Augusto, María Claudia, and Lucy Cienfuegos. "Entrevista a Rosa Alayza." Politai, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/92303.
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Entender la política desde los actores, sus formas de organización y las ideas que motivan sus acciones, es una entrada que permite complejizar el estudio del funcionamiento del Estado y su interacción con la sociedad civil. En efecto, lejos de estar aisladas, ambas espacios se complementan de forma permanente. Incorporar esta mirada, no solo en el estudio de los grupos de poder, sino también en los grupos marginales o minoritarios, constituye un aporte importante desde la Ciencia Política.En esta entrevista, Rosa Alayza, recoge esta discusión en relación al caso peruano a partir de su conocimiento y estudio sobre la materia. De un lado, señala los problemas históricos que ha tenido el Estado para responder estas demandas tanto en su estructura como en la reticencia de sus políticos a entablar diálogo con grupos minoritarios, perpetuando su exclusión y limitandosu importancia a la campaña electoral. De otro, destaca los problemas de articulación que presentan estos grupos sociales y sus implicancias para canalizar las demandas.Dentro de este escenario, marcado por la fragmentación, la exclusión y la desconfianza mutua, encontrar espacios que permitan la comunicación fluida entre el Estado y la sociedad, se convierte en una tarea compleja. Más si se considera, que la población tiende a ser homogeneizada por el Estado, dificultando el reconocimiento de su diversidad. Sin embargo, como sugierela conversación, los trabajos desde las Ciencias Sociales y la Ciencia Política pueden constituir una herramienta útil dentro de este escenario. En ese sentido, la Academia, puede contribuir a través del recojo de evidencia valiosa, permitiendo una aproximación a estos grupos dentro de sus particularidades históricas y culturales, es decir, desde su realidad propia.Rosa Alayza es Magíster en Ciencia Política por la New School for Social Research en Nueva York, con estudios de doctorado en Fordham University en Nueva York. Actualmente es profesora del Departamento de Ciencias Sociales de la PUCP.
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Stauder, Thomas. "'II Pendolo della Rosa'." Universität Leipzig, 1995. https://ul.qucosa.de/id/qucosa%3A32991.
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Resende, Mário Ferreira. "Dinheiro cor-de-rosa." Florianópolis, SC, 2003. http://repositorio.ufsc.br/xmlui/handle/123456789/86165.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Filosofia e Ciências Humanas. Programa de Pós-Graduação em Psicologia.Made available in DSpace on 2012-10-21T04:17:42Z (GMT). No. of bitstreams: 0
O presente trabalho desenvolve uma reflexão critica do movimento de inclusão de identidades marginais, no caso homossexuais, a partir de uma forma de movimento identitário que se engendra dentro do próprio capitalismo, no exato momento em que este recorta tal população como um segmento de mercado, investindo-a de interesse e capturando-a para a sua lógica. Traça-se um novo desenho da movimentação política em torno da homossexualidade, aonde a expansão do mercado GLS é observada sob o prisma da retração de possibilidades de singularização, uma vez que o investimento e captura das minorias, de seus miniprocessos de desejo e liberdade de singularização parece se constituir como peça chave para dar sustentação à produção de subjetividades no capitalismo. A perspectiva teórica de Michel Foucault forneceu as ferramentas necessárias para se desenhar o percurso metodológico. Como corpus de análise, foram selecionadas reportagens de revistas de circulação nacional, disponibilizadas na rede mundial de computadores, que identificam o universo GLS como segmento de consumo. A análise do corpus buscou observar os efeitos da consolidação do mercado GLS em termos de continuidades e rupturas, visando explicitar os jogos de força existentes entre as objetivações discursivas produzidas pelas relações estratégicas entre saberes e poderes, assim como a formação de um espaço de subjetivação amparado por esses discursos. Assim como o discurso de valorização dos homossexuais por seu potencial de consumo, aparece de maneira a homogeneizar, padronizar, sinalizando que a aceitação social da homossexualidade se dá apenas de maneira tácita, tolerada sob rigorosas circunstâncias, o recorte da homossexualidade como segmento de mercado também sinaliza a novas possibilidades, na recomposição de relações de força. A expansão do mercado GLS, mais do que representar um campo de restrição às possibilidades de singularização, representa igualmente a possibilidade de uma ameaça efetiva, fatal, e por isso irônica, ao próprio dispositivo que a fomenta.