نتایج جستجو برای: مدل kr
تعداد نتایج: 125249 فیلتر نتایج به سال:
Among different doses of gamma rays, 1.5 kR induced 71.84% callus in Basrnati rice in amodified MS medium and 2% redifferentiation under anon-saline environment, 20% callusing response with 7.5%,2.8% and 2.5% redifferentiation was induced by 2.0 kR at electrical conductivity (EC) of 4,s and 6 dS.m of NaCl respectively, in regeneration medium. A non-irradiated non-saline environment reveale...
هدف از انجام این پژوهش بررسی نقش ارائه بازخوردها و تخمین خطا بر قابلیت تشخیص خطا در یک تکلیف مداوم پیگردی بوده است. در این تحقیق 50 دانش آموز پسر دوره راهنمایی که همگی راست دست بودند بصورت دواطلبانه شرکت کردند. تکلیف مورد نظر تعقیب یک توپ در صفحه نمایش بود. آزمودنی ها باید نشانگر موس را بر روی توپ مورد نظر که در صفحه حرکت می کند نگاه دارند. مدت زمان حرکت 10/40ثانیه بود. آزمودنی ها براساس نوع با...
In this research, keratin (Kr)/ poly caprolactone (PCL)/ hydroxyapatite (HA) scaffold was made by electrospinning method. Then, the effect of HA nanoparticles on properties of scaffold B (Kr 33%, PCL 50% and HA 17%) and scaffold A (Kr 40% and PCL 60%) were studied. The surface morphology, functional groups on the surface of samples, porosity, and specific surface area were evaluated by Scanning...
Urotensin II (UII) is a potent vasoactive peptide and mitogenic agent to induce proliferation of various cells including vascular smooth muscle cells (VSMCs). In this study, we examined the effects of a novel UII receptor (UT) antagonist, KR-36676, on vasoconstriction of aorta and proliferation of aortic SMCs. In rat aorta, UII-induced vasoconstriction was significantly inhibited by KR-36676 in...
Validity of QSS Many systems of chemical reactions obey QSSA in all but the initial moments of the reaction [1]. QSSA treats the rates of change of the intermediates’ concentrations ( dt and d[J] dt in our system) as small enough to be approximated as 0. The validity of QSSA is ensured when the timescale of the overall reaction is slower than the timescale at which I and J reach their quasi-ste...
We prove the intersection conjecture for designs: For any complete graph Kr there is a finite set of positive integers M(r) such that for every n > n0(r), if Kn has a Kr-decomposition (namely a 2-(n, r, 1) design exists) then there are two Kr-decompositions of Kn having exactly q copies of Kr in common for every q belonging to the set {0, 1, . . . , ( n 2 ) / ( r 2 ) }\{ ( n 2 ) / ( r 2 ) −m | ...
We consider the problem of selecting kt × kr antennas from a Gaussian MIMO channel with nt × nr antennas, where kt ≤ nt and kr ≤ nr . We prove the following two results with regards to the same, that hold universally, i.e., these do not depend on the channel coefficients: (i) The capacity of the best kt × kr antennas is always lower bounded by a fraction kt·kr nt·nr of the full capacity (with n...
In this pa�, we suggest marry ing Dempster-Shafer (DS) theory w1th Knowledge Representation (KR). Born out of this marr iage is the defmition of "Dempster-Shafer Belief Bases", abstract data types representing uncertain knowledge that use DS theory for representing strength of belief about our knowledge, and the linguistic structures of an arbitrary KR system for representing the knowledge itse...
We have conducted a large-scale survey of 120 planetary nebulae (PNe) to search for the near-infrared emission lines [Kr III] 2.199 and [Se IV] 2.287 μm. The neutron(n)-capture elements Se and Kr may be enriched in a PN if its progenitor star experienced s-process nucleosynthesis and third dredge-up. In order to determine Se and Kr abundances, we have added these elements to the atomic database...
Objective: Estimation of genetic parameters for Kleiber ratio (KR) and genetic trends for pre-weaning weights of Arabi sheep has not been previously conducted.Methods: Data and pedigree information were collected at the Khuzestan Ramin Agricultural and Natural Resources University, Animal Science Research Station, located in southwest Iran, from 2001 to 2008. (Co)variance components and corresp...
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