Search results for "P.O.S"
showing 10 items of 5765 documents
The corticotrophin-releasing factor/urocortin system regulates white fat browning in mice through paracrine mechanisms.
2015
Objectives:\ud The corticotrophin-releasing factor (CRF)/urocortin system is expressed in the adipose tissue of mammals, but its functional role in this tissue remains unknown.\ud \ud Methods:\ud Pharmacological manipulation of the activity of CRF receptors, CRF1 and CRF2, was performed in 3T3L1 white pre-adipocytes and T37i brown pre-adipocytes during in vitro differentiation. The expression of genes of the CRF/urocortin system and of markers of white and brown adipocytes was evaluated along with mitochondrial biogenesis and cellular oxygen consumption. Metabolic evaluation of corticosterone-deficient or supplemented Crhr1-null (Crhr1−/−) mice and their wild-type controls was performed alo…
Effects of exercise and diet on sleep among overweight and obese men with chronic insomnia symptoms
2016
Système olfactif et neurobiologie
2006
Les connaissances neurobiologiques sur l’odorat progressent désormais rapidement depuis la découverte des récepteurs des odorants, remarquables par leur grand nombre et leur diversité. Des réponses sont maintenant apportées aux questions posées par les propriétés originales de la perception olfactive dont beaucoup sont déterminées dès le niveau de l’organe olfactif, et sont fortement déterminées par la génétique. Les connaissances génétiques sur les récepteurs dévoilent une considérable réduction du nombre de gènes olfactifs fonctionnels dans l’espèce humaine et alimentent une réflexion sur l’évolution de l’odorat. Autre avancée riche de promesses : l’application à l’olfaction des méthodes …
Oluen hivenainepitoisuuksien analysointi
2015
Tämän Pro gradu -tutkielman kirjallisessa osassa käsiteltiin hivenaineiden tarvetta palautumisen kannalta ja alkoholin tuottamia vaikutuksia palautumiseen. Lisäksi selvitettiin orgaanista ainesta sisältävien näytteiden esikäsittelymenetelmiä ja induktiivisesti kytketyn plasma-optisen emissiospektrometrin (ICP-OES) käyttöä hivenaineiden analysoinnissa. Ultraääni, mikroaalto, tuhkistus ja muita esikäsittelymenetelmiä ja niiden eroavaisuuksia ja eroja esiteltiin, koska oluen hivenaineanalyysien onnistumiseksi on erityisen tärkeää saada hiilidioksidi poistumaan näytetaustasta ja nämä menetelmät olivat hyväksi havaittuja kyseiseen toimintaan. Oluesta löytyy kirjallisuudesta hyvin vähän tutkimuks…
Optical properties and photosensitivity of vacuum synthesized Ge-doped sol-gel amorphous SiO/sub 2/
2005
We report optical and electron paramagnetic resonance investigations of gamma ray irradiation effects in sol-gel Ge-doped amorphous SiO/sub 2/. The studied materials have Ge-doping levels up to 10/sup 4/ molar part per million and were densified by two routes differing for the atmosphere: O/sub 2/+N/sub 2/ or vacuum. The obtained results evidence that irradiation affects matrix sites inducing paramagnetic defects. Furthermore, the comparison between the two densification procedures shows that vacuum atmosphere induces higher radiation sensitivity.
Structural and optical characterization of ZnS ultrathin films prepared by low-temperature ALD from diethylzinc and 1.5-pentanedithiol after various …
2019
The structural and optical evolution of the ZnS thin films prepared by atomic layer deposition (ALD) from the diethylzinc (DEZ) and 1,5-pentanedithiol (PDT) as zinc and sulfur precursors was studied. A deposited ZnS layer (of about 60 nm) is amorphous, with a significant S excess. After annealing, the stoichiometry improved for annealing temperatures &ge
Evolution of microstructure and related optical properties of ZnO grown by atomic layer deposition.
2013
A study of transmittance and photoluminescence spectra on the growth of oxygen-rich ultra-thin ZnO films prepared by atomic layer deposition is reported. The structural transition from an amorphous to a polycrystalline state is observed upon increasing the thickness. The unusual behavior of the energy gap with thickness reflected by optical properties is attributed to the improvement of the crystalline structure resulting from a decreasing concentration of point defects at the growth of grains. The spectra of UV and visible photoluminescence emissions correspond to transitions near the band-edge and defect-related transitions. Additional emissions were observed from band-tail states near th…
Sex steroid hormone receptors, their ligands, and nuclear and non-nuclear pathways
2015
The ability of a cell to respond to a particular hormone depends on the presence of specific receptors for those hormones. Once the hormone has bound to its receptor, and following structural and biochemical modifications to the receptor, it separates from cytoplasmic chaperone proteins, thereby exposing the nuclear localization sequences that result in the activation of the receptor and initiation of the biological actions of the hormone on the target cell. In addition, recent work has demonstrated new pathways of steroid signaling through orphan and cell surface receptors that contribute to more rapid, “non-nuclear” or non-transcriptional effects of steroid hormones, often involving G-pro…
"Sillä rahalla ei voi tulla toimeen jos ois kuinka hyvä laskupää" : punaorpojen avustaminen Kuopiossa 1918-1933
2014
Suomen sisällissota käytiin vuonna 1918, ja sen seurauksena kuoli noin 36 000 ihmistä ja yli 14 000 lasta jäi orvoiksi. Tässä pro gradu -tutkielmassa tarkastelen Kuopiossa sisällissodan seurauksena punaisten orvoiksi jääneitä lapsia. Tutkin, kuinka Kuopion kaupungin viranomaiset huolsivat punaorpoperheitä, ja vaikuttiko perheiden tausta avustustoimiin ja niiden toteuttamiseen. Kuopiossa punaorpopolitiikkaa toteutettiin erilaisessa kontekstissa kuin isommissa sodankärsineissä kaupungeissa. Kuopiossa oli sisällissodan jälkeen yhteensä 52 alle 15-vuotiasta punaorpoa. Tutkimukseni päälähteinä olen käyttänyt Kuopion kaupungin köyhäinhoitohallituksen ja -lautakunnan sekä kasvatus- ja lastensuojel…
Biharmonic obstacle problem: guaranteed and computable error bounds for approximate solutions
2020
The paper is concerned with a free boundary problem generated by the biharmonic operator and an obstacle. The main goal is to deduce a fully guaranteed upper bound of the difference between the exact minimizer u and any function (approximation) from the corresponding energy class (which consists of the functions in $H^2$ satisfying the prescribed boundary conditions and the restrictions stipulated by the obstacle). For this purpose we use the duality method of the calculus of variations and general type error identities earlier derived for a wide class of convex variational problems. By this method, we define a combined primal--dual measure of error. It contains four terms of different natu…