One of the most appropriate methods for elimination of trace impurities in helium is cryogenic adsorption process. So, in this study design and construction of cryogenic adsorption helium purification system (3 Nm3.hr-1, 80 bar) carried out using activated carbon as adsorbent at 77K. To evaluation of adsorption dynamics and effect of pressure on elimination of trace impurities, helium purificat...

Two experiments were conducted to compare whole, raw soybeans (WSB), extruded soybeans (ESB), and soybean meal+barley (SBM+BAR) as supplemental protein sources for growing beef steers consuming low-quality, mature grass hay (6.5% CP). In Exp. 1, a 23-d digestion study, four ruminally cannulated steers were assigned to the following treatments in a 4 x 4 Latin square design: 1) control, no suppl...

Based on recent studies regarding high-temperature (high-$T_c$) La-Y ternary hydrides (e.g., $P{\bar{1}}$-La$_2$YH$_{12}$, $Pm{\bar{3}}m$-LaYH$_{12}$, and $Pm{\bar{3}}m$-(La,Y)H$_{10}$ with a maximum $T_c \sim 253$ K), we examined the phase structural stabilities of (LaH$_6$)(YH$_6$)$_y$ series as high-$T_c$ hydride compositions using genetic algorithm $\it ab$ initio$ calculations. Our evaluat...

Determination of benzophenones (BPs) in human urine samples by stir bar sorptive extraction (SBSE) and thermal desorption (TD)-gas chromatography-mass spectrometry (GC-MS) is described. As analytes, BP, its metabolites benzhydrol (BP-OH) and 2-hydroxybenzophenone (2OH-BP), and its derivatives 2-hydroxy-4-methoxybenzophenone (BP-3) and 2-hydroxy-4-methoxy-4'-methylbenzophenone (BP-10) were selec...

The fragmentation process of primordial-gas cores during prestellar collapse is studied using three-dimensional nested-grid hydrodynamics. Starting from the initial central number density of nc ∼ 10 cm, we follow the evolution of rotating spherical cores up to the stellar density nc ≃ 10 cm. An initial condition of the cores is specified by three parameters: the ratios of the rotation and therm...

Experiments were conducted simulating hydrothermal conversion of heavy oil in the presence carbonate, kaolin, Al2O3, Ni2+ and Cu2+, NiO mixed with poly-?-olefins, C6H8O7, C2H4O2 at 290–375 °C 10–135 bar. carbonate 375 135 bar, accelerated resin degradation. 350 10 bar showed no significant composition changes. NiSO4, CuSO4, kaolin mineral, 78 decomposition resins (from 35.6% to 32.5%). Al2O3 29...

We present Keck Cosmic Web Imager (KCWI) observations of giant Lya halos surrounding 9 galaxy groups and clusters at 2<z<3.3, including five new detections one upper limit. find observational evidence for the cold-stream to hot-accretion transition predicted by theory measuring a decrease in ratio between spatially extended luminosity expected baryonic accretion rate (BAR), with increasing elon...