نتایج جستجو برای: argillaceous alteration haloes and iron
تعداد نتایج: 16864467 فیلتر نتایج به سال:
Iron plays a critical role in survival and virulence of the opportunistic pathogen Aspergillus fumigatus. Two transcription factors, the GATA-factor SreA and the bZip-factor HapX oppositely monitor iron homeostasis with HapX activating iron acquisition pathways (e.g., siderophores) and shutting down iron consumptive pathways (and SreA) during iron starvation conditions whereas SreA negatively r...
Our aim is to investigate whether the presence of baryons can have any significant influence on the properties of the local Hubble flow which has proved to be “cold”. We use two cosmological zoom simulations in the standard ΛCDM cosmology with the same set of initial conditions to study the formation of a local group-like system within a sphere of ∼ 7 h Mpc. The first one is a pure dark matter ...
Levels of adherence of Trichomonas vaginalis to epithelial cells was found to be modulated by iron. Cytoadherence values were greater than or equal to twofold higher for trichomonads grown in a complex cultivation medium supplemented with iron. This increase in adherence levels was specifically mediated by iron; parasites cultured in a low-iron medium in the presence of salts other than iron we...
Using cosmological N -body simulations of dark matter haloes, we study the effects of non-sphericity, substructure and streaming motions in reproducing the structure and internal kinematics of clusters of galaxies from kinematical measurements. Fitting an NFW model to the 3D density profile, we determine the virial mass, concentration parameter and velocity anisotropy of the haloes, and then ca...
We test the Secondary Infall Model (SIM) by direct comparison with the results of Nbody simulations. Eight cluster-size and six galactic-size dark matter haloes have been selected at z = 0 and re-simulated with high resolution. Based on their density profiles at the initial redshift, we compute their evolution by the SIM, assuming a simple prescription for the angular momentum. A comparison of ...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
کانسار مگنتیت- آپاتیت سه چاهون در منطقه بافق، ایران مرکزی، از دو آنومالی x و xi تشکیل شده است. هر یک از این آنومالی ها متشکل از چندین کان تن هستند. فرآیند های جانشینی و برشی شدن در مقیاس گسترده ای در این کانسار به چشم می خورد. این کانسار از نوع کانسارهای اکسید آهن-آپاتیت (ioa) است، که در آن دگرسانی های سدیک، سدیک-کلسیک، پتاسیک و دگرسانی های دما پایین (پروپیلیتیک) قابل مشاهده است. کانه زایی مگنت...
We study the effect of the relative velocity of dark matter and baryonic fluids after the epoch of recombination on the evolution of the first bound objects in the early Universe. Recent work has shown that, although the relative motion of the two fluids is formally a secondorder effect in density, it has a dramatic impact on the formation and distribution of the first cosmic structures. Focusi...
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