975 resultados para Androstane-3,17-diol -- metabolism


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A comprehensive study of 102 samples of grain size fractions 0.010-0.005; 0.005-0.001, and <0.001 mm showns that clay mineral compositions from bottom sediments of the Faroe-Iceland Threshold and Faroe-Shetland Trench are different. In the first case it is essentially smectite-chlorite, in the second - mainly hydromicaceous. The difference in composition of clay minerals is due to influence of different source areas of terrigenous material.

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Funding and trial registration: Scottish Government Chief Scientist Office grant CZH/3/17. ClinicalTrials.gov registration NCT01602705.

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A TANULMÁNY CÉLJA A vállalatok társadalmi felelősségvállalása (Corporate Social Responsibility, CSR) egyre jelentősebb szerepet tölt be a vállalatok megítélésében, ezért a szervezeteknek egyre inkább üzleti érdeke fűződik ahhoz, hogy érintettjeik kedvező véleménnyel legyenek CSR-tevékenységükről. A vállalati reputáció és a társadalmi felelősségvállalás kapcsolatát érintetti szempontból elemző elméleti modell alapján egy szervezet érintettjeinek körében vizsgálom meg a cég társadalmi felelősségvállalásra vonatkozó megítélését. Egy olyan kvalitatív módszert mutatok be, amelynek segítségével a vállalatok visszajelzést kaphatnak arról, hogy társadalmi felelősségvállalási tevékenységüket mennyire ismerik és hogyan értékelik az érintettek. Az érintettek által megalkotott "tükörkép" segítségével mind a társadalmi felelősségvállalás, mind a CSR-kommunikáció folyamatait lehet finomhangolni. ALKALMAZOTT MÓDSZERTAN Kvalitatív mélyinterjús kutatás az érintettek körében egy több elemből álló, vegyes módszertanon alapuló kutatás részeként. LEGFONTOSABB EREDMÉNYEK, ÚJDONSÁGOK: A kutatás elméleti jelentősége az, hogy összekapcsolja egymással az érintettek, a társadalmi felelősségvállalás, az identitás és a reputáció fogalmait és együttesen vizsgálja ezeket. Az elvégzett kutatás különlegessége, hogy az érintettek bevonásával, az általuk alkotott „tükörkép” segítségével mutatja be egy szervezet társadalmi felelősségvállalását. A vizsgált szervezet, Szatyor Egyesület és Szatyorbolt érdekessége, hogy a szervezet egy nonprofit egyesületből és egy üzleti vállalkozásból áll, amelyek szimbiózisban működnek. A cikkben egy olyan modell hazai gyakorlati alkalmazását mutatom be, amely lehetővé teszi a vállalatok számára érintettjeik elvárásainak és észlelésének megismerését társadalmi felelősségvállalásukkal kapcsolatban. A CSR-szempontú reputáció elemzése hozzájárulhat az érintettek számára fontos ügyek meghatározásához, az érintetti bevonás megalapozásához, valamint az érintetti elvárásoknak való jobb megfeleléshez. GYAKORLATI JAVASLATOK A Szatyorbolt és Szatyor Egyesület társadalmi felelősségvállalásáról sokat tudtak az érintettjeik, a szervezet reputációja nagyon pozitív volt körükben. Bár nagyon elkötelezettek, az érintettek nem látták át a CSR-programok sokféleségét, ami a kommunikáció hiányosságaira vezethető vissza. Ezen a téren továbblépést jelenthetne egy, az elkötelezett érintettekre alapozott márka-nagyköveti rendszer, amely támogathatná a szervezet kommunikációs üzeneteinek közvetítését. A cikk azt szemléltette, hogy hogyan lehet a bemutatott elméleti modell gyakorlati alkalmazásával elemezni egy szervezet társadalmi felelősségvállalását, valamint reputációját.

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The purpose of this study was to analyse the developmental pathway of skilled and less skilled volleyball players by focusing on the quantity and type of sporting activities, as well as their age and height in comparison to peers in those experiences. Retrospective interviews were conducted to provide a longitudinal and detailed account of sport involvement of 30 skilled and 30 less skilled volleyball players (15 male and 15 female players per group) throughout different developmental stages (stage 1: 8-12 years; stage 2: 13-16 years; stage 3: 17-20 years). Results indicated that the developmental pathway of these volleyball players (i.e. skilled and less skilled) was characterized by an early diversified sport involvement with a greater participation in sport activities during stages 1 and 2. However, skilled players specialized later in volleyball (between age 14 and 15) and performed more hours of volleyball at stage 3 (from 17 years of age onwards). Also, skilled players (male and female) were younger in both the diversified sport activities and volleyball at the later stages of development (i.e. stages 2 and 3), and skilled female players were taller than peers in those activities in the early stages of development (i.e. stages 1 and 2). The present findings suggest early diversification as a feasible pathway to reach expertise in volleyball and highlight the importance of practicing with older peers once specialization in the main sport has occurred. The findings highlight the need for coaches and sport programs to consider different stimuli existing within the training environment (i.e. characteristics of athletes, such as age and height) that influence the quality of practice and contribute to players’ expertise development.

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This paper deals with the place of narrative, that is, storytelling, in public deliberation. A distinction is made between weak and strong conceptions of narrative. According to the weak one, storytelling is but one rhetorical device among others with which social actors produce and convey meaning. In contrast, the strong conception holds that narrative is necessary to communicate, and argue, about topics such as the human experience of time, collective identities and the moral and ethical validity of values. The upshot of this idea is that storytelling should be a necessary component of any ideal of public deliberation. Contrary to recent work by deliberative theorists, who tend to adopt the weak conception of narrative, the author argues for embracing the strong one. The main contention of this article is that stories not only have a legitimate place in deliberation, but are even necessary to formulate certain arguments in the fi rst place; for instance, arguments drawing on historical experience. This claim, namely that narrative is constitutive of certain arguments, in the sense that, without it, said reasons cannot be articulated, is illustrated by deliberative theory’s own narrative underpinnings. Finally, certain possible objections against the strong conception of narrative are dispelled.

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Durante el siglo XIX diversos artistas europeos emprendieron el viaje hacia diferentes puntos del continente americano. Entre ellos, mucho se dedicaron a la litografía, logrando en ciertos casos un amplio éxito comercial. Este artículo examina la trayectoria de la artista ginebrina Andrienne Pauline Macaire (1796-1855), dueña junto a su esposo de un temprano emprendimiento litográfico en la ciudad de Buenos Aires. Macaire puede ser considerada la primera artista profesional de renombre activa en esa ciudad. En efecto, es posible diferenciar su trayectoria de las de otras artistas contemporáneas, de las cuales se dispone de menos información y de las que han sobrevivido menos obras. En una primera parte del texto se analiza su inscripción en la literatura artística nacional. A continuación, se describe su formación en Ginebra y se estudia su importante actividad en Buenos Aires, estableciendo conexiones con el panorama artístico local. A lo largo del artículo se presentan obras y fuentes inéditas, o insuficientemente exploradas, a fin de justipreciar su carrera artística y de brindar elementos para futuras investigaciones.

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From the Divercity project, the article reflects on methodology, good practices and indicators useful for community art practices. At first term, social exclusión is defined as well as community art, and which features it presents. Subsequently, the article reviews the indicators that are being used to measure the success or achievement of community arts practice, raising criticism from equality and including indicators that measure the well-being of women.

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We aspire to shape the Constantine’s personality in particular by analyzing his loving relationship, first with Minervina and then with Fausta, and not forgetting the bond with his mother Helena, hence the reference to uxor, mater and concubina in our title. We will analyze if these women exercised any influence on the composition of his production rules and, if so, to what extent they were able to determine the historical development of the following decades. From this point of view we must consider in general the emperor had to combine their political claims and government with these relationships, showing great skill in handling times and ways, always putting the first to the second.

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This paper aims to investigate the use of collocations in DELE B1. We select the reading texts from DELE B1 (2010 to 2014) as research data. The investigation includes: First of all, we will study the theory of collocation and the classification as well as its application to the foreign language learning and teaching. Second, we will analyze the types of collocation annotated by Corpus Tool. Third, we tend to calculate the frequency use of each type of collocations written in Spanish reading texts. Next, we will discuss the interrelationship between collocations and text themes. Finally, we would like to compare the differences of results of collocation use between these two corpus tools: Corpus Tool and Corpus del Español in order to understand the native speakers’ preference of use collocations as well as to provide supplementay materials for teaching of Spanish reading. We hope that the expected results of our research will offer useful references for improving students' Spanish reading comprehension to pass DELE B1 examinations.

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The aim of this study was to develop a multiplex loop-mediated isothermal amplification (LAMP) method capable of detecting Escherichia coli generally and verocytotoxigenic E. coli (VTEC) specifically in beef and bovine faeces. The LAMP assay developed was highly specific (100%) and able to distinguish between E. coli and VTEC based on the amplification of the phoA, and stx1 and/or stx2 genes, respectively. In the absence of an enrichment step, the limit of detection 50% (LOD50) of the LAMP assay was determined to be 2.83, 3.17 and 2.83-3.17 log CFU/g for E. coli with phoA, stx1 and stx2 genes, respectively, when artificially inoculated minced beef and bovine faeces were tested. The LAMP calibration curves generated with pure cultures, and spiked beef and faeces, suggested that the assay had good quantification capability. Validation of the assay, performed using retail beef and bovine faeces samples, demonstrated good correlation between counts obtained by the LAMP assay and by a conventional culture method, but suggested the possibility of false negative LAMP results for 12.5-14.7% of samples tested. The multiplex LAMP assay developed potentially represents a rapid alternative to culture for monitoring E.coli levels in beef or faeces and it would provide additional information on the presence of VTEC. However, some further optimisation is needed to improve detection sensitivity.

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Mestrado em Medicina Nuclear - Área de especialização: Tomografia por Emissão de Positrões

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En este trabajo se proponen dos nuevos constructos para explicar el rendimiento de las acciones el día en que son admitidas a cotización. El primero de ellos captura la influencia del precio final de oferta en relación con el rango no vinculante propuesto a los inversores durante la preventa. El segundo tiene por objeto medir la importancia de la reputación de los asesores financieros encargados de explicativa de estas alternativas se evaluará a través de modelos de regresión lineal centrados en la estructura de la colocación.3

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Rezension von: Hans-Christoph Koller: Bildung anders denken, Einführung in die Theorie transformatorischer Bildungsprozesse, Stuttgart: Kohlhammer 2012 (194 S.; ISBN 978-3-17-021980-9)

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Invasive species pose a major threat to aquatic ecosystems. Their impact can be particularly severe in tropical regions, like those in northern Australia, where >20 invasive fish species are recorded. In temperate regions, environmental DNA (eDNA) technology is gaining momentum as a tool to detect aquatic pests, but the technology's effectiveness has not been fully explored in tropical systems with their unique climatic challenges (i.e. high turbidity, temperatures and ultraviolet light). In this study, we modified conventional eDNA protocols for use in tropical environments using the invasive fish, Mozambique tilapia (Oreochromis mossambicus) as a detection model. We evaluated the effects of high water temperatures and fish density on the detection of tilapia eDNA, using filters with larger pores to facilitate filtration. Large-pore filters (20 μm) were effective in filtering turbid waters and retaining sufficient eDNA, whilst achieving filtration times of 2-3 min per 2-L sample. High water temperatures, often experienced in the tropics (23, 29, 35 °C), did not affect eDNA degradation rates, although high temperatures (35 °C) did significantly increase fish eDNA shedding rates. We established a minimum detection limit for tilapia (1 fish/0.4 megalitres/after 4 days) and found that low water flow (3.17 L/s) into ponds with high fish density (>16 fish/0.4 megalitres) did not affect eDNA detection. These results demonstrate that eDNA technology can be effectively used in tropical ecosystems to detect invasive fish species. © 2016 John Wiley & Sons Ltd.

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Males often use scent to communicate their domi- nance, and to mediate aggressive and breeding behaviors. In teleost fish, however, the chemical composition of male pher- omones is poorly understood. Male Mozambique tilapia, Oreochromis mossambicus, use urine that signals social status and primes females to spawn. The urinary sex pheromone di- rected at females consists of 5β-pregnane-3α,17α,20β-triol 3- glucuronate and its 20α-epimer. The concentration of these is positively correlated with male social rank. This study tested whether dominant male urine reduces aggression in receiver males, and whether the pregnanetriol 3-glucuronates also re- duce male-male aggression. Males were allowed to fight their mirror image when exposed to either: i) water control or a chemical stimulus; ii) dominant male urine (DMU); iii) C18- solid phase (C18-SPE) DMU eluate; iv) C18-SPE DMU eluate plus filtrate; v) the two pregnanetriol 3-glucuronates (P3Gs); or vi) P3Gs plus DMU filtrate. Control males mounted an increas- ingly aggressive fight against their image over time. However, DMU significantly reduced this aggressive response. The two urinary P3Gs did not replicate the effect of whole DMU. Neither did the C18-SPE DMU eluate, containing the P3Gs, alone, nor the C18-SPE DMU filtrate to which the two P3Gs were added. Only exposure to reconstituted DMU (C18-SPE eluate plus filtrate) restored the aggression-reducing effect of whole DMU. Olfactory activity was present in the eluate and the polar filtrate in electro-olfactogram studies. We conclude that P3Gs alone have no reducing effect on aggression and that the urinary signal driving off male competition is likely to be a multi-component pheromone, with components present in both the polar and non-polar urine fractions.