نتایج جستجو برای: n 25
تعداد نتایج: 1277476 فیلتر نتایج به سال:
Distinct domains within the SNARE (soluble N-ethylmaleimide-sensitive fusion protein attachment protein receptor) proteins, STX1A (syntaxin 1A) and SNAP-25 (synaptosome-associated protein-25 kDa), regulate hormone secretion by their actions on the cell's exocytotic machinery, as well as voltage-gated Ca2+ and K+ channels. We examined the action of distinct domains within SNAP-25 on Kv2.1 (volta...
proper application of n fertilizer and its optimization for increasing the economic yield of rice is definitely important. in order to determine the best n application method and amount according to growth stages of hybrid rice, an experiment was carried out at experimental farm of rrii in a factorial experiment based on a randomized complete block design with 3 replications. the treatments inc...
Let $R$ be a ring, and let $n, d$ be non-negative integers. A right $R$-module $M$ is called $(n, d)$-projective if $Ext^{d+1}_R(M, A)=0$ for every $n$-copresented right $R$-module $A$. $R$ is called right $n$-cocoherent if every $n$-copresented right $R$-module is $(n+1)$-coprese-nted, it is called a right co-$(n,d)$-ring if every right $R$-module is $(n, d)$-projective. $R$...
the wisconsin test card sorting test (wcst) is a neuropsychological test that has been suggested as a more specific test for frontal lobes dysfunctions. this study was designed to determine whether wcst is able to differentiate between iranian psychiatric patients with cognitive disorders and normal subjects, and whether wcst scores are related to severity of symptoms in depressive and schizoph...
The modifying effects of 24R,25-dihydroxyvitamin D3 [24R,25(OH)2D3], a vitamin D3 derivative, on glandular stomach carcinogenesis were investigated in male Wistar rats by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) and sodium chloride exposure during the postinitiation phase. A total of 130 male 6-week-old rats was divided into five groups. Groups 1-3 (consisting of 30 rats/group) were given MN...
Volumetric N 2 adsorption at ?196°C is generally accepted as “gold standard” for estimating the Brunauer-Emmet-Teller (BET) surface area of nanocellulose. It unclear however, whether BET nanocellulose obtained such low temperatures and pressures meaningful an absolute sense, used ambient temperature pressure. In this work, a systematic evaluation using highly crystalline bacterial cellulose (BC...
The targeting of chaotic trajectories uses the sensitive dependence on initial conditions to produce large (desired) changes to the trajectory using small perturbations. One important application is to directing spacecraft using very small amounts of fuel, relying on the (Hamiltonian) chaos of the three body problem consisting of the spacecraft, earth, and moon or other planet. Another applicat...
Given a DNF formula φ with n variables, DNF counting is the problem finding the number of satisfying assignments for φ. Note that in general satisfiability for DNF is easy as we need only satisfy a single clause, but the counting problem is hard. Indeed, if we could do this, then given any 3-CNF formula f with n variables, we could take its negation, count how many satisfying assignments its ne...
Electronic relaxation dynamics subsequent to s→p excitation of the excess electron in large anionic water clusters, H2O n − and D2O n − with 25 n 200, were investigated using time-resolved photoelectron imaging. Experimental improvements have enabled considerably larger clusters to be probed than in previous work, and the temporal resolution of the instrument has been improved. New trends are s...
Not long after taxonomists recognized that among the saprolegniaceous fungi there were homologous groups possessing similar devices for insuring reproduction, they began industriously arranging these groups into hierarchical clusters to suggest relationships. Although the resulting phylogenetic schemes were fashioned around the relatively simple structure of the individual species, mycologists ...
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