نتایج جستجو برای: 193 b and 136 unit activity min
تعداد نتایج: 17105325 فیلتر نتایج به سال:
The German cockroach is an important household insect pest mechanically involved in transmission of a variety of diseases to humans. Different classes of insecticides have extensively been used for its control leading to insecticide resistance development. Hence, for an optimal control of this pest, the status and underlying mechanisms of insecticide resistance should be studied in this group o...
Background and objectives: Hyoscyamus reticulatus contains two distinguished tropane alkaloids, hyoscyamineand scopolamine and both of the compounds possesspotential acute or chronic toxicity. In the present study, a simple and efficient transformation system was established for in vitro hairy roots induction in Hyoscyamus reticulatus. M...
An isoenzyme of soybean (Glycine max L. Merrill cv. Provar) lipoxygenase (EC 1.13.11.12) has been crystallized using the vapor diffusion method. Crystals were grown from solutions of the protein (7 mg/ml) using 10 to 20% (w/v) polyethylene glycol 8000 in citrate/phosphate buffer (pH 5.7) containing 0.5% (w/v) n-octyl-beta-D-glucopyranoside. The crystals reached maximum dimensions of 0.3 mm x 0....
We recently demonstrated that polychlorinated biphenyl (PCB) congeners with multiple ortho chlorine substitutions sensitize ryanodine receptors (RyRs), and this activity promotes Ca²⁺-dependent dendritic growth in cultured neurons. Many ortho-substituted congeners display axial chirality, and we previously reported that the chiral congener PCB 136 (2,2',3,3',6,6'-hexachlorobiphenyl) atropselect...
this study has examined the functional importance of nucleus accumbens (nac)-ventral tegmental area (vta) interactions. as it is known, this interaction is important in associative reward processes. under urethane anesthesia, extracellular single unit recordings of the shell sub-region of the nucleus accumbens (nacsh) neurons were employed to determine the functional contributions of the vta to...
این پژوهش دیدگاه حسابرسان درباره فعالیتهای حسابرسی و فعالیتهای بازاریابی در 193 نفر از حسابرسان شاغل در سازمان حسابرسی و مؤسسات خصوصی حسابرسی را بررسی مینماید. هدف اصلی این مقاله شناسایی میزان تمایل حسابرسان به فعالیت بازاریابی است. روش پژوهش حاضر از نوع توصیفی بوده و ابزار آن پرسش نامه میباشد. آزمون فرضیه نیز از طریق روش همبستگی با استفاده از رگرسیون چند متغیره انجام شده است. نتایج پژوهش ن...
let h be a separable hilbert space and let b be the set of bessel sequences in h. by using several interesting results in operator theory we study some topological properties of frames and riesz bases by constructing a banach space structure on b. the convergence of a sequence of elements in b is de_ned and we determine whether important properties of the sequence is preserved under the con...
روش تکراری استاندارد برای حل مسائل کم ترین مربعات بزرگ و تنک min???b-ax?_2 ?, a?r^(m×n) ، روش cgls است که از نظر ریاضی معادل به کارگیری روش گرادیان مزدوج روی معادله ی نرمال a^t ax= a^t b است. ما روش های جای گزین دیگری را با استفاده از ماتریس b?r^(n×m) و به کارگیری روش کم ترین مانده ی تعمیم یافته (gmres) روی min???b-abz?_2 ? یا min???bb-bax?_2 ? بررسی می کنیم. هم چنین، برای روش های gmres، یک شرط...
a water soluble polysaccharide, hb-1, with a molecular weight of 23,930, was isolated from radix ranunculi ternati. by hot water extraction, ethanol precipitation, deproteination，ultrafiltration and gel-filtration column chromatography. its sugar composition was determined by glc as glc, ara, and gal in a molar ration of 16.071: 2.722: 1. and the absolute configuration of glc was identified as ...
5. D. W. Hommer amd L. R. Skirboll. Eur. J. Pharmac. 16. J. W. Kebabian, G. L. Petzold and P. Greengard, Proc. natn. Acad. U.S.A. 69. 2145 (1972). 91, 151 (1983). 6. S. E. Hays, F. Goodwin and S. M. Paul, Peptides 2, !hDD1.. 21 (1981). 7. R.‘Chang, V. L&ti, G. Martin and T. B. Chen, Life Sci. 32, 871 (1983). 8. K. Fuxe, K. Andersson, V. Locatelli, L. F. Agnati, T. Hokfelt, L. Skirboll and V. Mu...
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