نتایج جستجو برای: serve as processes
تعداد نتایج: 5872512 فیلتر نتایج به سال:
Reconstructing how biota have responded to fast-paced warming events in the past can help predict their responses rapid climate changes future. Here we suggest that natural communities located near glaciers are useful laboratories for this purpose as they experienced accentuated by ice-margin fluctuations. By reconstructing an Alaskan glacier's position over a 166-year period and measuring peri...
In this paper, we propose two structural models of amorphous GaN at different densities, obtained from approximate ab initio molecular dynamics. The network models we obtain are highly disordered but exhibit a large state-free optical gap, and have no homopolar bonds (or odd-membered rings). The radial distribution function, local bonding, and electronic density of states are described. We find...
Astrocytes extend their processes to make contact with neurons and blood vessels and regulate important processes associated with the physiology/pathophysiology of the brain. Their elaborate morphology, with numerous fine processes, could allow them to perform complex signal transductions with distinct compartments or to function as a spatial buffer depending on the diffusion properties of thei...
AIM The aim of the study was to compare the yield of mean platelet volume (MPV), total prostate specific antigen (tPSA), free prostate specific antigen (fPSA), f/t PSA ratio and complex prostate specific antigen (cPSA) in patients with prostatitis. MATERIAL AND METHOD The study was designed in the Kayseri Education and Research Hospital. Ninety-six patients with prostatitis were enrolled retr...
Tumor neo-vascularization is critical for tumor growth, invasion and metastasis, which has been considered to be mediated by a mechanism of angiogenesis. However, histopathological studies have suggested that tumor cells might be the progenitor for tumor vasculature. Recently, we have reported that the precancerous stem cells (pCSCs) representing the early stage of developing cancer stem cells ...
UNLABELLED Biological sensors can be engineered to measure a wide range of environmental conditions. Here we show that statistical analysis of DNA from natural microbial communities can be used to accurately identify environmental contaminants, including uranium and nitrate at a nuclear waste site. In addition to contamination, sequence data from the 16S rRNA gene alone can quantitatively predi...
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