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Dissertations / Theses on the topic 'WR'

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Published: 4 June 2021
Last updated: 10 February 2022

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1

Huenemoerder, David, K. Gayley, Wolf-Rainer Hamann, et al. "High Resolution X-ray Spec- tra of WR 6." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/2699.

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As WR 6 is a putatively single WN4 star, and is relatively bright (V = 6.9), it is an ideal case for studying the wind mechanisms in these extremely luminous stars. To obtain higher resolution spectra at higher energy (above 1 keV) than previously obtained with the XMM/Newton RGS, we have observed WR 6 with the Chandra High Energy Transmission Grating Spectrometer for 450 ks. We have resolved emission lines of S, Si, Mg, Ne, and Fe, which all show a “fin”-shaped profile, characteristic of a self-absorbed uniformly expanding shell. Steep blue edges gives robust maximal expansion velocities of a
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2

Langan, Sinéad. "A prospective study of the effects of environmental factors on eczema in children." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/11775/.

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Background: Eczema is an important condition as it affects 20% of children in the UK and is associated with significant morbidity for children and their families. Although some progress in understanding factors associated with the occurrence of eczema has been made, very little is known about factors associated with disease worsening. Most textbooks and review articles quote long lists of exacerbating factors but with very little scientific data to support them. Before I could begin to study this topic, I first had to define a disease flare in eczema, systematically review the literature on fl
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Eleftheriadou, Viktoria. "Setting priorities and reducing uncertainties for the treatment of vitiligo." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13378/.

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Vitiligo is the most common skin disorder resulting in depigmentation, but high-quality research is lacking. A Cochrane review of interventions for vitiligo published in 2010 highlighted methodological limitations with existing trials; which have generally been too small and heterogeneous to inform clinical recommendations. The objective of this thesis was to improve the evidence base for the treatment of vitiligo. This PhD was funded by the National Institute for Health Research, as part of the research programme called “Setting Priorities and Reducing Uncertainties for people with Skin Disea
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4

Simpson, Rosalind C. "Erosive lichen planus affecting the vulva : defining the disease, developing outcome measures and designing a randomised controlled trial." Thesis, University of Nottingham, 2015. http://eprints.nottingham.ac.uk/28301/.

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Erosive lichen planus affecting the vulvovaginal region (ELPV) is a rare chronic inflammatory condition causing painful raw areas that can lead to scarring, at the vaginal entrance. Symptoms considerably impact upon daily function and quality of life. There is risk of cancerous change in affected skin of 1-3%. A Cochrane Systematic Review, published in 2012, found no randomised controlled trials (RCT) on which to base treatment for ELPV. Retrospective case series suggest that super-potent topical corticosteroids are frequently used as first-line therapy, although one third of patients fail to
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5

Lansbury, Louise E. "An evidence based approach towards optimising the management of patients with squamous cell carcinoma of the skin." Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/27747/.

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Cutaneous squamous cell carcinoma (SCC) is a common cancer yet its treatment is under-researched. The objective of this thesis was to develop a proposal for a randomised controlled trial (RCT) to address uncertainties relating to the management of the condition, and to ultimately improve the management of affected patients. Two systematic reviews were initially conducted to appraise the current evidence base for SCC treatments. Only one RCT was eligible for inclusion in the Cochrane systematic review; a small study which found no significant difference in time to recurrence between patients tr
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6

Pon, Carlos (Carlos Roberto) Carleton University Dissertation Engineering Electronics. "Time warping - waveform relaxation (TW - WR) in a distributed simulation environment." Ottawa, 1995.

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7

Huenemoerder, David P., K. G. Gayley, Wolf-Rainer Hamann, et al. "Probing Wolf–Rayet Winds: Chandra/HETG X-Ray Spectra of WR 6." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etsu-works/2692.

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With a deep Chandra/HETGS exposure of WR 6, we have resolved emission lines whose profiles show that the X-rays originate from a uniformly expanding spherical wind of high X-ray-continuum optical depth. The presence of strong helium-like forbidden lines places the source of X-ray emission at tens to hundreds of stellar radii from the photosphere. Variability was present in X-rays and simultaneous optical photometry, but neither were correlated with the known period of the system or with each other. An enhanced abundance of sodium revealed nuclear-processed material, a quantity related to the e
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8

Ignace, Richard, K. Gayley, W. R. Hamann, et al. "The XMM-Newton EPIC X-ray Light Curve Analysis of WR 6." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/6239.

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We obtained four pointings of over 100 ks each of the well-studied Wolf-Rayet star WR 6 with the XMM-Newton satellite. With a first paper emphasizing the results of spectral analysis, this follow-up highlights the X-ray variability clearly detected in all four pointings. However, phased light curves fail to confirm obvious cyclic behavior on the well-established 3.766 d period widely found at longer wavelengths. The data are of such quality that we were able to conduct a search for "event clustering" in the arrival times of X-ray photons. However, we fail to detect any such clustering. One pos
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9

Eklund, Gerd. "Vrist - brist - rist : utvecklingen av gammalt uddljudande "wr" i nordiska, särskilt svenska, dialekter /." Uppsala : Dialekt- och folkminnesarkivet, 1991. http://catalogue.bnf.fr/ark:/12148/cb35542109m.

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Akademisk avhandling--Humanistiskt-samhällsvetenskapligt centrum--Uppsala, 1991.<br>Mention parallèle de titre ou de responsabilité : Vrist - brist - rist : development of old initial "wr" in Scandinavian, particularly Swedish, dialects. Résumé en anglais.
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10

Rocha, Juliana Trevisan da. "Atividade hipolipidêmica do disseleneto de difenila na hiperlipidemia induzida por triton wr-1339 em camundongos." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/11115.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>In mammals, the liver plays a central role in whole-body lipid metabolism. Unfortunately, dysregulation of these pathways has been implicated in hyperlipidemias. In recent years, a significant association between the trace element selenium and hypercholesterolaemia in human and animals has been reported. This study was designed to investigate a potential hypolipidaemic effect of diphenyl diselenide ((PhSe)2) in Triton WR-1339-induced hyperlipidaemia in mice. Triton was administered intraperitoneally (400 mg/kg) to overnight-fasted
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11

Oskinova, L., W. R. Hamann, A. Feldmeier, Richard Ignace, and Y. H. Chu. "Discovery of X-ray Emission from the Wolf-Rayet Star WR 142 of Oxygen Subtype." Digital Commons @ East Tennessee State University, 2009. https://dc.etsu.edu/etsu-works/6260.

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We report the discovery of weak yet hard X-ray emission from the Wolf-Rayet (WR) star WR 142 with the XMM-Newton X-ray telescope. Being of spectral subtype WO2, WR 142 is a massive star in a very advanced evolutionary stage shortly before its explosion as a supernova or gamma-ray burst. This is the first detection of X-ray emission from a WO-type star. We rule out any serendipitous X-ray sources within approximate to 1 '' of WR 142. WR 142 has an X-ray luminosity of L(X) approximate to 7 x 10(30) erg s(-1), which constitutes only less than or similar to 10(-8) of its bolometric luminosity. The
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12

Törnqvist, Josefin. "‘How great!’ : A morpho-syntactic and semantic study on the two roots aA and wr." Thesis, Uppsala universitet, Institutionen för arkeologi och antik historia, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-323643.

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Egyptology is a discipline in which new research and new approaches are continuously necessary and – in most cases – provided. In this constant flow of new research, some subject areas are left untouched. The lemmas aA and wr have continuously had a very homogenous translation although the morphological and syntactical differences are quite visible. The generally accepted translation of both lemmas as ‘great’ is very singular and raises the question of whether aA and wr should be considered synonyms or not. The study consists of two combined parts; a morpho-syntactical analysis of aA and wr an
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13

Vale, Richard Thomas Robert. "On category O for the rational Cherednik algebra of the complex reflection group (Z/lZ) wr Sn." Thesis, University of Glasgow, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.437932.

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14

Schweickhardt, Jörg. "Analyse hochaufgelöster spektroskopischer Zeitserien der Wolf-Rayet-Doppelsternsysteme g2 [gamma 2] Velorum, WR 22 und HD 5980." [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8832580.

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15

Harris, Melissa. "Left-Right Symmetric Model : Putting lower bounds on the mass of the heavy, charged WR gauge boson." Thesis, Uppsala universitet, Högenergifysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-329683.

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In this project I have studied the left-right symmetric model (LRSM) as a candidate beyond standard model theory of particle physics. The most common version of the theory, called the minimal LRSM, has been studied and tested extensively for several decades. I have therefore modied this minimal LRSM by adapting the scalar sector and computing the mass of the charged right-handed gauge bosons WR for this particular scalar sector. I carried out a study of the theory and implemented it into FeynRules, in order to simulate LHC events using MadGraph. This allowed computation of the cross-section fo
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16

Mather, Jonathan, and Nancy Shaw. "RANGE SAFETY CASE STUDY: WESTERN RANGE CENTRALIZED TELEMETRY PROCESSING SYSTEM (WR CTPS), A LARGE DISTRIBUTED GROUND SYSTEM." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604505.

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ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>This paper presents a case study of the Western Range Centralized Telemetry Processing Subsystem (WR CTPS). This system was developed by Lockheed Martin Integrated Systems and Global Services and L-3 Communications Telemetry-West as part of the Range Standardization and Automation (RSA) IIA program. Requirements included real-time simultaneous acquisition of 16 PCM streams at rates of up to 30
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17

Tolentino, Scott A. "An analysis of the relative weight (Wr) of yellow perch from Indiana waters of Lake Michigan, 1984-91." Virtual Press, 1992. http://liblink.bsu.edu/uhtbin/catkey/834610.

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Relative weight (Wr) of yellow perch (Perca flavescens) was evaluated for fish collected from the Indiana waters of Lake Michigan in June, July and August of 1976 and 1984-1991. Computation of Wr was completed for individual fish in 20 mm intervals over the size range from 100-219 mm using Wr = (W/Ws) 100 where W=weight of a fish in grams and Ws=standard weight for a fish of the same length. Length was highly correlated with weight in all years for males, females and sexes combined (r=0.97-0.99). Distributions of predicted weights for fish at 130 mm and 250 mm were at or near modes of the popu
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18

St-Louis, Nicole, Patrick Tremblay, and Richard Ignace. "Polarization Light Curve Modeling of Corotating Interaction Regions in the Wind of the Wolf-Rayet Star Wr 6." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/etsu-works/2690.

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The intriguing WN4b star WR 6 has been known to display epoch-dependent spectroscopic, photometric and polarimetric variability for several decades. In this paper, we set out to verify if a simplified analytical model in which corotating interaction regions (CIRs) threading an otherwise spherical wind is able to reproduce the many broad-band continuum light curves from the literature with a reasonable set of parameters. We modified the optically thin model developed by Ignace, St-Louis & Proulx-Giraldeau to approximately account for multiple scattering and used it to fit 13 separate data sets
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19

Flodman, Mikael. "Building a Sporting Goods Recommendation System." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169711.

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This thesis report describes an attempt to build a recommender system for recommending sporting goods in an e-commerce setting, using the customer purchase history as the input dataset. Two input datasets were considered, the item purchases dataset and the item-category dataset. Both the datasets are implicit, that is not explicitly rated by the customer. The data is also very sparse that very few users have purchased more than a handful of the items featured in the dataset. The report describes a method for dealing with both the implicit datasets as well as addressing the problem of sparsity.
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20

Hirata, Mario Hiroyuki. "Efeitos do Triton WR 1339, sulfato de protamina E heparina sobre a lipólise e a remoção plasmática de quilomícrons artificiais em ratos." Universidade de São Paulo, 1985. http://www.teses.usp.br/teses/disponiveis/9/9132/tde-20032008-092759/.

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Emulsões artificiais sem proteína simulando quilomicrons e remanescentes de quilomícron foram preparadas por sonicalcação de trioleína, lecitina, colesteril oleato e colesterol em solução aquosa. A seguir foram ultracentrifugadas em gradiente descontínuo de densidade. As emulsões, marcadas com 3H-trioleína e 14C-colesteril oleato foram injetadas via intra-arterial em ratos controle e em ratos tratados com Triton WR1339, sulfato de protamina e heparina, medindo-se a seguir a remoção plasmática do colesteril-ester e dos triglicérides, durante dez minutos. O Triton WR 1339 e a protamina inibiram
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21

Schäfer, Fabian. "Reproductive management and gamete quality in pikeperch (Sander lucioperca)." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17636.

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Der Zander (Sander lucioperca) hat großes Potential für die Aquakultur in Europa. Die Verbreitung wird durch einen Mangel an Satzmaterial erschwert, welcher durch Variabilität der Gametenqualität verursacht wird. Im Gegensatz zu Effekten der ganzjährigen Reproduktion oder der Laicherfahrung, war besonders die Weibchengröße mit Variabilität der Eiqualität assoziiert. Sehr große Weibchen zeigten einen verringerten Reproduktionserfolg. Maternale Faktoren waren mit Aspekten der Eizusammensetzung (bes. Fettsäuren) verknüpft, welche wiederum mit Befruchtungsraten und Embryoüberleben korrelierten. Zu
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22

Capriotti, Giuseppe. "Classificazione spettrale delle stelle." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/16375/.

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Tutte le nostre informazioni riguardo le proprietà fisiche delle stelle derivano più o meno direttamente dallo studio dei loro spettri, in particolare attraverso lo studio della variazione delle linee di assorbimento, della temperatura e della composizione. Dopo una rapida definizione di stella e di corpo nero, si passa alla descrizione delle classificazioni di Harvard, di Yerkes e del diagramma H-R. Infine si giunge allo studio degli spettri stellari e all'analisi e al comportamento delle righe di assorbimento che li caratterizzano. Vengono quindi citate le importanti equazioni di Boltzmann
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23

Hubrig, S., K. Scholz, Wolf-Rainer Hamann, et al. "Searching for a Magnetic Field in Wolf-Rayet Stars Using FORS 2 Spectropolarimetry." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/2694.

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To investigate if magnetic fields are present in Wolf–Rayet stars, we selected a few stars in the Galaxy and one in the Large Magellanic Cloud (LMC). We acquired low-resolution spectropolarimetric observations with the European Southern Observatory FORS 2 (FOcal Reducer low dispersion Spectrograph) instrument during two different observing runs. During the first run in visitor mode, we observed the LMC Wolf–Rayet star BAT99 7 and the stars WR 6, WR 7, WR 18, and WR 23 in our Galaxy. The second run in service mode was focused on monitoring the star WR 6. Linear polarization was recorded immedia
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Mugodo, James, and n/a. "Plant species rarity and data restriction influence the prediction success of species distribution models." University of Canberra. Resource, Environmental & Heritage Sciences, 2002. http://erl.canberra.edu.au./public/adt-AUC20050530.112801.

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There is a growing need for accurate distribution data for both common and rare plant species for conservation planning and ecological research purposes. A database of more than 500 observations for nine tree species with different ecological and geographical distributions and a range of frequencies of occurrence in south-eastern New South Wales (Australia) was used to compare the predictive performance of logistic regression models, generalised additive models (GAMs) and classification tree models (CTMs) using different data restriction regimes and several model-building strategies. Environme
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25

Ohst, Torsten. "Genetische Einflüsse allochthoner Wasserfrösche auf endemische Wasserfroschpopulationen (R. kl. esculenta Komplex)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15857.

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Allochthone Wasserfrösche haben in Deutschland und vielen anderen Ländern Europas zu Faunenverfälschungen geführt. Sie konkurrieren mit einheimischen Tieren und stellen aus genetischer Sicht eine Bedrohung der Bestände dar. In dieser Arbeit wurden die Genotypen von 447 Wasserfroschproben aus Deutschland sowie 460 aus anderen Teilen Europas untersucht. Im Gesamtdatensatz konnten 56 ITS2- und 65 ND3-Genotypen nachgewiesen werden. Unter den 20 in Deutschland gefunden ITS2-Allelen wurden zwei Rana ridibunda-ähnliche Genotypen als autochthon und fünf als allochthon erkannt (Häufigkeit 7 %), der S
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26

Braun, Katrin. "Comparative study on the nervous system of Tunicata to elucidate tunicate phylogeny and character transformations." Doctoral thesis, Humboldt-Universität zu Berlin, 2019. http://dx.doi.org/10.18452/19930.

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Tunicata umfasst 3000 marine Arten, mit sehr unterschiedlichen Lebensstrategien. Als eines der drei großen Taxa innerhalb der Chordata, stellt die Evolution der Tunikaten eine Schlüsselkomponente bei der Aufklärung der Evolution der Chordaten und Cranioten dar. Dafür ist ein Verständnis der Merkmalstransformationen innerhalb der Tunikaten notwendig. Leider sind die internen Verwandtschaftsverhältnisse der fünf großen Tunikatentaxa in verschiedenen molekularphylogenetischen Studien widersprüchlich. Bisher gibt es nur wenige morphologische phylogenetische Analysen. Ein Schwerpunkt dieser Arbeit
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27

Yuan, Chao. "Exploratory research for pathogenesis of papulopustular rosacea and skin barrier research in Besançon and Shanghai." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCE004/document.

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La rosacée est une maladie inflammatoire chronique de la peau qui affecte presque exclusivement la peau faciale centrale. Actuellement, la morbidité de la rosacée en Chine augmente. Chaque signe clinique de la rosacée est lié à la pathogenèse de cette maladie cutanée dont la physiopathologie très complexe, implique différents types cellulaires et molécules de la peau et divers sous-types. Selon ces résultats, nous avons pu évaluer le rôle de la barrière cutanée et des microorganismes dans la rosacée. Le premier objectif de cette thèse était de déterminer si un microbiote cutané altéré est le r
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Mohneke, Meike. "(Un)sustainable use of frogs in West Africa and resulting consequences for the ecosystem." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2011. http://dx.doi.org/10.18452/16296.

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Amphibien sind global von einem Artenrückgang betroffen, wobei Ausbeutung bestimmter Froscharten einer der Gründe hierfür ist. Die vorliegende Arbeit gibt erstmals Einblick in Form, Umfang und Auswirkungen der extensiven Nutzung von Fröschen in Westafrika. Interviews mit Konsumenten und in den Froschhandel Involvierten ermöglichten die Nutzung und den Handel von Fröschen in Burkina Faso, Benin und Nigeria zu quantifizieren und zu bewerten. Während der Froschhandel in Burkina Faso eher auf lokaler Ebene abläuft, ließ sich im Norden Benins und in Nigeria ein intensiver grenzüberschreitender Hand
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Dittrich, Carolin. "Reproductive behaviour of the European Common Frog (Rana temporaria)." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21476.

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In meiner Dissertation untersuche ich das Paarungs- und Fortpflanzungsverhalten des Europäischen Grasfrosches (Rana temporaria) in einem evolutionären Kontext. Mein Ziel ist es zu verstehen, welche Mechanismen zur Bildung von Paaren führen, ob die Partnerwahl die Paarungsmuster erklärt, die wir beobachten können, und ob es evolutive Vorteile gibt, die sich aus der Paarung mit einem bestimmten Partner ergeben. Die Suche nach und die Konkurrenz um Paarungspartner führt zur Entwicklung verschiedener Paarungssysteme, Strategien und Taktiken, um den Reproduktionserfolg während der gesamten Lebensda
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Marcou, Alice. "Interactions d’ondes et de bord." Thesis, Bordeaux 1, 2011. http://www.theses.fr/2011BOR14267/document.

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Tout d'abord, des ondes de surface, solutions de problèmes aux limites hyperboliques non linéaires, sont étudiées : on construit une solution BKW sous forme de développement infini en puissance de epsilon. On le justifie rigoureusement, en construisant une solution exacte, qui admet ce développement asymptotique. On montre que la solution n'est pas nécessairement purement localisée sur la frontière, même lorsque le terme source l'est ; l'exemple d'un cas particulier de l'élasticité est traité. Ensuite, on étudie la réflexion d'ondes non linéaires discontinues, pour des problèmes aux limites hy
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Müller, Christina. "Behavioural reactions of cod (Gadus morhua) and plaice (Pleuronectes platessa) to sound resembling offshore wind turbine noise." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15725.

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Durch die Zunahme von Offshorewindparks wird der anthropogene Lärmpegel im Meer weiter ansteigen. Deshalb ist es notwendig, mögliche negative Effekte von Windturbinenschall auf Fische zu erkennen und zu minimieren. Um mögliche Effekte des Turbinenschalls auf Kabeljau (Gadus morhua) und Scholle (Pleuronectes platessa) zu untersuchen, wurden die Fische in Laborversuchen verschiedenen tiefen Frequenzen und Schallstärken, wie sie von Windturbinen emittiert werden ausgesetzt. Ein ringförmiges Betonversuchsbecken mit 10 Metern Durchmesser wurde mit Schallisolationwänden in verbundene Viertel unter
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32

Penner, Johannes. "Macroecology of West African amphibians." Doctoral thesis, Humboldt-Universität zu Berlin, Lebenswissenschaftliche Fakultät, 2014. http://dx.doi.org/10.18452/17035.

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Amphibienpopulationen sind weltweit bedroht. Für fundierte Entscheidungen im Naturschutz ist ein wissenschaftliches Hintergrundwissen notwendig. Eine wichtige Komponente ist die Verbreitung der Arten und die Gründe hierfür. Dies setzt auch Klarheit bezüglich des taxonomischen Status voraus. Vernachlässigte Regionen liegen meist in den Tropen. Um diese Lücke zu füllen, untersucht die vorliegende Arbeit die Makroökologie westafrikanischer Amphibien. Eine neue Art der Familie Phrynobatrachidae wird beschrieben. Anschließend werden die taxonomischen Unterschiede zweier Mitglieder der Familien der
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33

Bracamonte, Seraina Emilia. "Immune and metabolic processes jointly contribute to susceptibility to invasive parasites - The case of Anguillicola crassus in eels." Doctoral thesis, Humboldt-Universität zu Berlin, 2020. http://dx.doi.org/10.18452/21074.

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Die Einschleppung gebietsfremder Parasiten durch den Menschen ist einer der Hauptgründe für das Auftreten neuer Krankheiten in the letzten Jahrzehnten. Neue Wirte sind oftmals anfälliger für diese invasiven Parasiten als die ursprünglichen Wirte. In schwerwiegenden Fällen können invasive Parasiten zu Massensterben und zum Aussterben ihrer neuen Wirte führen. Der ursprüngliche Wirt des Aalparasiten Anguillicola crassus ist der Japanische Aal. In den frühen 1980er Jahren wurde der Parasit in die Population des Europäischen Aals eingeschleppt. Er ist einer der Faktoren, die für den Populationsrüc
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Murakaeva, Asiya. "Structure, evolution and expression of the duplicated growth hormone genes of common carp (Cyprinus carpio)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2009. http://dx.doi.org/10.18452/15982.

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Der Karpfen, Cyprinus carpio, ist eine tetraploide Fischart aus der Familie Cyprinidae, die vor 20-50 Mio Jahren entstanden ist. Das Ziel der vorliegenden Arbeit war der Versuch, die funktionelle Rolle der duplizierten GH Gene des Karpfens durch das Studium ihrer Struktur, Evolution und Expression zu verstehen. Die Introns des zweiten GH Gens des Karpfens wurden erstmalig sequenziert und Sequenzvergleiche der kodierenden und nicht-kodierenden Bereiche von Allelen beider GH Gene wurden vorgenommen. Eine phylogenetische Analyse wurde durchgefuhrt, um die Beziehungen der GH Gene des Karpfens zu d
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35

Goorochurn, Ranesha. "Perte d'homogénéité du teint chez la femme à peau mature : approches biométrologique et cellulaire du lentigo actinique." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA3002/document.

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La couleur de la peau chez un individu, appelée teint ou complexion, évolue au cours du temps et dépend de facteurs extrinsèques et intrinsèques. Une perte de son homogénéité est liée à l'apparition de lésions cutanées hyperpigmentées. Elles sont notamment provoquées par une exposition chronique au soleil et apparaissent avec l'âge, comme dans le cas du lentigo actinique. Si cette lésion hyperpigmentée bénigne est bien caractérisée à l'échelle macroscopique, peu d'études explorent ses fonctions cutanées grâce à des outils non invasifs. À l'échelle cellulaire et moléculaire, cette lésion hyperp
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Fanian, Ferial. "1-How in vivo cutaneous biometrology could demonstrate skin modifications induced by various methods. 2-In vitro evaluation of phenytoin on the morphology and activity of human primary melanocytes and in vivo repigmentation effect of topical phenytoin." Thesis, Besançon, 2016. http://www.theses.fr/2016BESA3008.

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La Biometrogie cutanée est un nouveau spectre de différentes méthodes d'évaluation qui permettent de mesurer les différents paramètres de la peau même en cas des petites modifications. Dans la première partie de nos travaux, nous avons étudié différentes capacités de ces méthodes afin de les corréler avec d'autres données cliniques et histologiques. Ces données nous ont encouragés à découvrir de plus en plus la pigmentation de la peau qui est un peu plus compliquée que les autres paramètres. Par conséquent, sur la deuxième partie, nous nous sommes concentrés sur la biologie cutanée en particul
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Ballegooy, Christoph van. "Endokrine Wirkungen (anti)androgener Substanzen bei der Ploetze (Rutilus rutilus)." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 2008. http://dx.doi.org/10.18452/15743.

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Substanzen, die durch ihr hormonell wirksames Potenzial mit dem Hormonsystem interagieren und adverse Effekte auf die Reproduktion von Invertebraten und Vertebraten ausueben koennen, erlangten in den letzten Jahrzehnten große Aufmerksamkeit. Viele dieser Substanzen reduzieren die Fertilitaet oder die Fekunditaet, fuehren zu Abnormalitaeten in der Ontogenese oder im Verhalten der Tiere und haben Einfluss auf die Geschlechterverhaeltnisse. In der vorliegenden Arbeit wurden verschiedene Aspekte dieses Themengebietes bearbeitet. Das in Europa endemisch vorkommende Rotauge (Rutilus rutilus), ein Su
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38

Heu, Céline. "Vieillissement des barrières biologiques. : caractérisation morphologique et fonctionnelle d'un modèle de stress environnemntal induit chez la lignée kératinocytaire humaine HaCat." Thesis, Besançon, 2012. http://www.theses.fr/2012BESA0005.

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II existe de nombreuses études mettant en relation le vieillissement et le stress oxydant, mais peu d'entre elles ont caractérisé l'évolution des marqueurs des défenses antioxydantes, notamment au niveau cutané, au cours du vieillissement dit extrinsèque ou environnemental.Nous avons cherché à mimer in vitro le vieillissement extrinsèque cutané, à partir d'un modèle de cellules épidermiques en culture, la lignée de kératinocytes humains HaCaT, soumises à un stress chimique, l'exposition au glyphosate, un principe actif entrant dans la composition de nombreuses formulations pesticides. Ainsi, n
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Demonchaux, Patrice. "Recherche d'agents radioprotecteurs : synthèse et mécanisme d'action de composés de type intercalant-aminothiol." Grenoble 1, 1988. http://www.theses.fr/1988GRE10016.

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Les intercalants utilises sont des amino-9 chloro-6 methoxy-2 acridines des amino-4 chloro-7 quinoleines et des amino-4 chloro-7 methyl-1 quinoleiniums sur lesquels ont ete introduites des chaines analogues a celles de la cysteamine et du wr 2727; etude de l'affinite de ces composes avec l'adn
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40

Mihailovic, Katarina. "Visions of 1968: Radical Aesthetics in Porcile, WR and Tout va bien." Thesis, 2011. http://spectrum.library.concordia.ca/7453/1/Mihailovic_MA_S2011.pdf.

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In my thesis, I examine the responses of four politically radical filmmakers—Jean-Luc Godard and Jean-Pierre Gorin, Dušan Makavejev, and Pier Paolo Pasolini—to their cultural, ideological and theoretical contexts. I am particularly interested in the filmmakers’ respective conceptions of the politically radical work of art and their understanding of the role of the politically committed intellectual in the aftermath of the 1968 movement. I undertake an analysis of Godard's and Gorin’s Tout va bien (All’s Well, 1972), Makavejev's WR:Misterije organizma (WR: Mysteries of the Organism, 1968-71), a
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Lee, Alan Yueh-Luen, and 李岳倫. "Function-Structural Studies on the Lon Protease from Brevibacillus thermoruber WR-249." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/37143254234545757149.

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博士<br>國立臺灣大學<br>生化科學研究所<br>92<br>Protein quality control plays key roles in prokaryotic and eukaryotic cells by depicting cellular surveillance systems of structural and functional integrity of proteins inside a cell. Oligomeric ATP-dependent proteases consisting of the chaperone and the protease machinery carry out such quality control. These energy-dependent proteases are especially important under stress conditions because increasing amounts of misfolding and damaged proteins may accumulate during various stresses. A thermostable Lon protease from Brevibacillus thermoruber WR-249
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Huang, Dai-Po, and 黃岱柏. "Function-Structural Studies on the Lon Protease from Meiothermus taiwanensis WR-220." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/24033059837659209408.

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碩士<br>臺灣大學<br>生化科學研究所<br>98<br>The Lon proteases had been known as one of the most evolutionarily conserved proteins. According to previous findings, Lon proteases possessed ATPase, protease, peptidase and chaperone activities. Based on these multi-functional Lon proteases, the protein quality control system and the regulation of metabolic process could both work well. In this study, the function-structural characterizations among Mt-LonA1, Mt-LonA2 and Mt-TTC1975 from Meiothermus taiwanensis would be juxtaposed to express the contrast. The Lon protease family could be divided into two subfami
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43

Aldoretta, Emily. "A study of the large-scale structure of the wind of WR 134." Thèse, 2015. http://hdl.handle.net/1866/13673.

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Diverses méthodes ont été utilisées pour étudier les étoiles Wolf-Rayet (WR) dans le but de comprendre les phénomènes physiques variés qui prennent place dans leur vent dense. Pour étudier la variabilité qui n'est pas strictement périodique et ayant des caractéristiques différentes d'une époque à l'autre, il faut observer pendant des périodes de temps suffisamment longues en adopter un échantillonnage temporel élevé pour être en mesure d'identifier les phénomènes physiques sous-jacents. À l'été 2013, des astronomes professionnels et amateurs du monde entier ont contribué à une campagne d'obse
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44

Eklund, Gerd. "Vrist - brist - rist : Utvecklingen av gammalt uddljudande wr i nordiska, särskilt svenska, dialekter." Doctoral thesis, 1991. http://urn.kb.se/resolve?urn=urn:nbn:se:sprakochfolkminnen:diva-328.

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The Germanic initial sound combination wr (e.g. in *wrītan 'write') has not been preserved in any standard language. In the Scandinavian languages the development of this sound combination has resulted in five different initial sounds or sound combinations, namely rw, r, w, br and vr. The aim of this study is to describe the occurrence of these sound combinations, and to explain their age and origin. A limited number of words, mainly from Swedish dialects, has been investigated. The Swedish material has been assembled in a collection that has largely also been mapped, and so has a collection o
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45

Lin, Yu-Ching, та 林宇慶. "DNA-binding specificity of the Lon protease α-domain from Brevibacillus thermoruber WR-249". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/04158306371001020663.

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博士<br>臺灣大學<br>生化科學研究所<br>98<br>The multi-functional, homo-oligomeric, ATP-dependent Lon protease is highly conserved in prokaryotes and eukaryotic organelles. Previous studies have shown that Lon activity is essential for protein quality control and regulation of metabolic processes. Here we examined the DNA-binding activity of the Lon protease α-domains from Brevibacillus thermoruber, Bacillus subtilis, and Escherichia coli. Gel mobility shift assays indicated that the α-domain from Br. thermoruber has the highest DNA affinity. MALDI-TOF mass spectrometry showed that this α-domain binds to th
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46

Hénault-Brunet, Vincent. "Étude de l’étoile Wolf-Rayet variable WR 46 dans l’ultraviolet lointain et les rayons X." Thèse, 2009. http://hdl.handle.net/1866/3208.

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L’étoile Wolf-Rayet WR 46 est connue pour sa variabilité complexe sur des échelles de temps relativement courtes de quelques heures et sur des échelles de temps plus longues de plusieurs mois. Des décalages périodiques mais intermittents en vitesse radiale ont déjà été observés dans ses raies d’émission optiques. Plusieurs périodes photométriques ont aussi été mesurées dans le passé. Des pulsations non-radiales, une modulation liée à la rotation rapide, ou encore la présence d’un compagnon de faible masse dont la présence reste à confirmer ont été proposées pour expliquer le comportement de l’
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47

Huang, Shiue-Fang, and 黃雪芳. "Function-Structure Studies on the isolated Domains of Lon Protease from Meiothermus taiwanensis WR-220." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/14238444582167160882.

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碩士<br>國立臺灣大學<br>生化科學研究所<br>100<br>ATP-dependent Lon protease has been known as one of the most evolutionarily conserved proteins in living organisms, which is a homo-oligomeric multi-domain enzyme. Lon proteases are divided into two subfamilies, LonA and LonB. Each possesses both ATPase domain, belonging to the AAA+ superfamily and a proteolytic domain (P-domain) with a serine-lysine catalytic dyad. The difference between LonA and LonB is that LonA contains a large N-terminal domain, whereas LonB has a transmembrane domain that anchors the protein to the membrane. Lon proteases are well-known
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48

Lee, Huai-Cheng. "In vitro Identification and Characterization of DNA Sequences Bound by Brevibacillus thermoruber WR-249 Lon Protease." 2005. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2306200515192100.

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49

Chen, Yu-Da, та 陳昱達. "Elucidation of DNA Recognition Mode for the Lon Protease α-domain from Brevibacillus thermoruber WR-249". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/03258302625355859819.

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碩士<br>國立臺灣大學<br>生化科學研究所<br>99<br>Lon protease is a multifunctional enzyme, and it’s functions include the degradation of damaged proteins, ATPase, and chaperone-like activities. It is highly conserved in prokaryotes and eukaryotic organelles. Our previous studies demonstrate the DNA binding ability as a novel function for a thermostable Lon protease from Brevibacillus thermoruber WR-249. However, the physiological role and structure of DNA binding by Lon was still poorly understood. Bioinfomatic analysis reveals that the α-domain of Bt-Lon should be a new member of DNA binding domains with an
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50

Lee, Huai-Cheng, and 李懷正. "In vitro Identification and Characterization of DNA Sequences Bound by Brevibacillus thermoruber WR-249 Lon Protease." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/38970824198741829342.

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碩士<br>國立臺灣大學<br>生化科學研究所<br>93<br>Proteins with DNA-binding activity mostly play an important role in the gene expression of a cell. This kind of proteins appears to exert its regulatory function by degrading some transcription factors after it binds to DNA. To investigate what kinds of elements bound by the DNA-binding proteins, identification of the binding site of the DNA must be achieved. A thermostable Lon protease from Brevibacillus thermoruber WR-249 (Bt-Lon) has been cloned and characterized with an N-terminal domain, a central ATPase domain including a SSD (sensor- and substrate- disc
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