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Abd El‐Aal M. Gaber Mohamed S. A. El‐Gaby Adel M. Kamal El‐Dean Hassan A. Eyada Ahmed S. N. Al‐Kamali 《中国化学会会志》2004,51(6):1325-1331
4‐Cyano‐5,6‐dimethylpyridazin‐3‐(2H)‐thione 3b was used as a key intermediate for the synthesis of novel polysubstituted thieno[2,3‐c]pyridazines. 相似文献
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M. R. Abdi H. Faghihian M. Mostajaboddavati A. Hasanzadeh M. Kamali 《Journal of Radioanalytical and Nuclear Chemistry》2006,270(2):319-324
Summary A reconnaissance study has been made on the distribution of 238U, 232 Th, 40K, 137Cs and geochemical features in soil and sediment samples at various locations in the coast of Persian Gulf. Activity concentration
levels due to radionuclides were measured in 50 samples of soils and sediments collected from the coast of Hormozgan. From
the measured spectra, activity concentrations were determined for 40K (range from 140 to 1172 Bq . kg-1), 137Cs (from 0 to 15 Bq . kg-1), 238 U (from 29 to 385 Bq . kg-1) and 2321 Th (from 9 to 156 Bq . kg-1) with the lowest limit of detection (LLD) of 68, 3.2, 4.3 and 4.3 Bq . kg-1, respectively. The dose rate from ambient air at the soil ranges was between 23 to 177 nGy . h-1 with an average of 60±7.86 nGy . h-1. 相似文献
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Zeinab Kamali Mahmood Lashkarizadeh Bami 《Journal of Fourier Analysis and Applications》2016,22(6):1225-1234
The concepts of BSE property and BSE algebras were introduced and studied by Takahasi and Hatori in 1990 and later by Kaniuth and Ülger. This abbreviation refers to a famous theorem proved by Bochner and Schoenberg for \(L^1({\mathbb {R}})\), where \({\mathbb {R}}\) is the additive group of real numbers, and by Eberlein for \(L^1(G)\) of a locally compact abelian group G. In this paper we investigate this property for the Banach algebra \(L^p(S,\mu )\;(1\le p<\infty )\) where S is a compact totally ordered semigroup with multiplication \(xy=\max \{x,y\}\) and \(\mu \) is a regular bounded continuous measure on S. As an application, we have shown that \(L^1(S,\mu )\) is not an ideal in its second dual. 相似文献
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A simple, accurate, sensitive and economical procedure for the estimation of amlodipine besylate and nifedipine, both in pure and dosage forms, has been developed. The method is based on the reduction of iron(III) by the studied drugs and subsequent interaction of iron(II) with ferricyanide to form Prussian blue. The reaction develops through a slow kinetics and completes in about 10 min. Both initial slope and fixed time methods were used to derive calibration graphs. The resulted calibration equations were linear in the concentration ranges of 1.0-20.0 and 3.0-19.0 μg ml-1 for AML and NIF, and the detection limits were 0.10 and 0.19 μg ml-1, respectively. Seven replicate analyses of solutions containing three different levels of each drug resulted in very low relative error of prediction (less than 1.6%) and relative standard deviation (less than 4%) confirming accuracy and precision of the proposed method. The proposed method was applied to the determination of these drugs in pharmaceutical formulations and excellent recoveries were obtained. 相似文献
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Warm inflation model with bulk viscous pressure in the context of “intermediate inflation” where the cosmological scale factor expands as $a(t)=a_0\exp (At^f)$ , is studied. The characteristics of this model in slow-roll approximation and in high dissipative regime are presented in two cases: 1—Dissipative parameter $\Gamma $ as a function of scalar field $\phi $ and bulk viscous coefficient $\zeta $ as a function of energy density $\rho $ . 2— $\Gamma $ and $\zeta $ are constant parameters. Scalar, tensor perturbations and spectral indices for this scenario are obtained. The cosmological parameters appearing in the present model are constrained by recent observational data (WMAP7). 相似文献
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M. Z. M. Kamali J. H. Chin S. Y. Ng Kuru Ratnavelu 《The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics》2014,68(3):1-8
In this work, studies have been carried out to investigate theoretically the electron (positron)-impact-induced 2s → 2p lithium (Li) transition at 20 and 60 eV using the coupled-channel optical method (CCOM). The inelastic differential cross sections (DCS) together with the reduced Stokes parameters ( $\bar P_1$ , $\bar P_2$ , $\bar P_3$ ) and other parameters such as the alignment (γ, $\bar P_l$ ), orientation (L ⊥) and coherence parameters (P +) are reported in the present calculations. Comparison is made with other available theoretical and experimental measurements. 相似文献
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