نتایج جستجو برای: dla
تعداد نتایج: 4413 فیلتر نتایج به سال:
Diffusion-Limited Aggregation (DLA) is a model of fractal growth. Computer models can simulate the fast aggregation of millions of particles. In this paper, we propose a modified version of DLA, called semantically modified DLA (SM-DLA), for visualizing large-scale networks. SM-DLA introduces similarity measures between particles so that instead of attaching to the nearest particle in the aggre...
We examine the abundance, clustering and metallicity of Damped Lyman-α Absorbers (DLAs) in a suite of hydrodynamic cosmological simulations using the moving mesh code AREPO . We incorporate models of supernova and AGN feedback, as well as molecular hydrogen formation. We compare our simulations to the column density distribution function at z = 3, the total DLA abundance at z = 2 − 4, the measu...
A Nomenclature committee for Factors of the Dog Major Histocompatibility System or Dog Leukocyte Antigen (DLA) has been convened under the auspices of the International Society for Animal Genetics (ISAG) to define a sequence based nomenclature for the genes of the DLA system. The remit of this committee includes: assignment of gene names rules for naming alleles assignment of names to published...
Chemically Consistent Evolution of Galaxies on Cosmological Timescales and the Dla Galaxy Population
We describe the evolution of galaxies in a chemically consistent way accounting for the increasing initial metallicity of successive generations of stars. The enrichment of various types of model galaxies is compared with Damped Lyα (= DLA) abundances over the redshift range from z ∼ 0 through z > 4.4. We discuss properties and composition of the galaxy population giving rise to DLA absorption....
زمینه مطالعه: نقش مهم مولکولهای مجتمع عمده پذیرش بافتی (MHC) اتصال به پپتیدهای پادگنی و عرضه آنها به لنفوسیتهای T است. از اینرو تنوع MHC با حساسیت و یا مقاومت در برابر بسیاری از بیماریهای عفونی و بیماری های خودایمن مرتبط است. یک روش نوین بررسی تنوع ژنتیکی، تحلیل دقیق دمای شکافت (HRM-High Resolution Melting) DNA است که می توان آنرا برای بررسی تنوع MHC به کار برد. هدف: تمییز آلل های MHC سگ ...
Obesity and its related metabolic disorders are closely correlated with gut dysbiosis. Montmorillonite is a common medicine used to treat diarrhea. We have previously found that dietary lipid adsorbent-montmorillonite (DLA-M) has an unexpected role in preventing obesity. The aim of this study was to further investigate whether DLA-M regulates intestinal absorption and gut microbiota to prevent ...
Beagles are commonly used in vaccine trials as part of the regulatory approval process. Genetic restriction within this breed and the impact this might have on vaccine responses are rarely considered. This study was designed to characterise diversity of dog leucocyte antigen (DLA) class II genes in a breeding colony of laboratory Beagles, whose offspring are used in vaccine studies. DLA haploty...
Several models based on the diffusion-limited aggregation (DLA) model were proposed and their scaling properties explored by computational and theoretical approaches. In this paper, we consider a new extension of the on-lattice DLA model in which the unitary random steps are replaced by random flights of fixed length. This procedure reduces the screening for particle penetration present in the ...
Moments of the measure defined by products of random deviates are considered with the aim of reproducing the multifractal spectrum of the DiffusionLimited Aggregation (DLA) . appeared in: Journal of Technical Physics 37 (1996), pp.441-444 In 1981 Witten and Sander have proposed the Diffusion-Limited Aggregation (DLA) model [1] leading to the formation of fractal patterns. The growth process of ...
We report the detection, both in line and continuum emission, of a galaxy responsible for a damped Ly absorption (DLA) system at z = 3:15 projected 2:3 00 from QSO 2233+131. The star formation rate implied by both the Ly and restframe far-UV continuum is 7 M yr ?1. The galaxy also shows no sign of an active nucleus and has blue colors, both consistent with it being observed early in its star fo...
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