نتایج جستجو برای: گروه d8
تعداد نتایج: 119133 فیلتر نتایج به سال:
The synthetic work was carried out with a Schlenk line under an atmosphere of argon or in an argonfilled glove-box with oxygen levels below 10 ppm. All solvents were dried and purified by conventional methods and distilled under argon before use. [D6]benzene, [D8]toluene and [D8]THF were purified by distillation from Na/K under argon. [Rh{Si(OEt)3}(PEt3)3] (1), [Rh(H)(PEt3)3] (6), [Rh(CH3)(PEt3...
این مقاله با استفاده از رهیافت داده های پانلی و بر اساس مبانی نظری، که از فرایند بهینه سازی اقتصاد خرد به دست آمده است، در پی بررسی اثر اینترنت بر تجارت است. دوره زمانی مورد مطالعه سال 2000 تا 2013 برای کشورهای گروه g8 (گروه هشت کشور صنعتی جهان) و کشورهای گروه d8 (سازمان کشورهای اسلامی در حال توسعه) است. بر اساس یافته های به دست آمده از تخمین مدل با روش پانل با اثرهای ثابت، در هر دو گروه کشورها...
35 years old male patient presented clinically with progressive lower limb weakness and impotence of 3 years duration, disturbance of micturation with few drops of urine passing without the patient control was a prominent symptom. On examination the patient had atrophy of the anterior tibial group of muscles on the right side, with bilateral spasticity in both lower limbs and a sensory level at...
Magnetic island equilibria resulting from reconnection in magnetohydrodynamic (MHD) simulations are explored in a two-dimensional slab geometry. Magnetic islands are evolved to finite amplitude with a nonzero resistivity. The resistivity and flows are then set to zero and the system is allowed to relax toward equilibrium. A y-type singular current layer in the equilibrium state is identified fo...
We study the dynamics of D-particles (D0-branes) in type I' string theory and of the corresponding states in the dual heterotic description. We account for the presence of the two 8-orientifolds (8 dimensional orientifold planes) and sixteen D8-branes by deriving the appropriate quantum mechanical system. We recover the familiar condition of eight D8-branes for each 8-orientifold. We investigat...
The sample was prepared by dissolving 0.0063 g of TEMPAMINE (4-amino-2,2,6,6-tetramethylpiperidine-1oxyl; Aldrich, 163945) in 1 mL of d8-toluene, 0.33 mL of which was further diluted to 1 mL and from that, a 0.1 mL alliquot was added to a solution of 0.039 g deuterated polystyrene (Polymer Source, P4179B-dPS, Mn = 200×10 and Mw/Mn = 1.4) in 0.9 mL of d8-toluene. The resulting solution was spun ...
We study the relation between the D8-branes wrapped on an orientable compact manifold W in a massive Type IIA supergravity background and the M9-branes wrapped on a compact manifold Z in a massive d=11 supergravity background from the K-theoretic point of view. By speculationg on the use of the dimensional reduction to relate the two theories in different dimensions and by interpreting the D8-b...
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