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111.
112.
Ali Ramazani Issa Amini Abdolhossain Massoudi 《Phosphorus, sulfur, and silicon and the related elements》2013,188(10):2373-2376
The protonation of the highly reactive 1:1 intermediates, produced in the reaction of triphenylphosphine and dialkyl acetylenedicarboxylates, by 1,1-binaphthyl-2,2′-diol leads to vinyltriphenylphosphonium salts, which undergo a Michael addition reaction to produce the corresponding stabilized phosphonium ylides. Dipotassium hydrogen phosphate powder was found to catalyze the conversion of the stabilized phosphonium ylides to alkyl 2-(2-alkoxy-2-oxoethyl)dinaphtho[2,1-d:1,2-f][1,3]-dioxepin-2-carboxylates under solvent-free conditions using microwave (0.6 KW, 3 min) and thermal (100°C, 60 min) conditions. 相似文献
113.
Massoud Amini Hamed Nikpey Seyyed Mohammad Tabatabaie 《Mathematische Nachrichten》2019,292(9):1897-1910
The crossed product of ‐algebras by groups, groupoids and semigroups are well studied. In this paper we introduce and study the crossed product of ‐algebras by (locally compact) hypergroups. We calculate the crossed products by finite hypergroups of orders 2 and 3. 相似文献
114.
Label-free cell separation and sorting in microfluidic systems 总被引:2,自引:0,他引:2
Daniel R. Gossett Westbrook M. Weaver Albert J. Mach Soojung Claire Hur Henry Tat Kwong Tse Wonhee Lee Hamed Amini Dino Di Carlo 《Analytical and bioanalytical chemistry》2010,397(8):3249-3267
Cell separation and sorting are essential steps in cell biology research and in many diagnostic and therapeutic methods. Recently,
there has been interest in methods which avoid the use of biochemical labels; numerous intrinsic biomarkers have been explored
to identify cells including size, electrical polarizability, and hydrodynamic properties. This review highlights microfluidic
techniques used for label-free discrimination and fractionation of cell populations. Microfluidic systems have been adopted
to precisely handle single cells and interface with other tools for biochemical analysis. We analyzed many of these techniques,
detailing their mode of separation, while concentrating on recent developments and evaluating their prospects for application.
Furthermore, this was done from a perspective where inertial effects are considered important and general performance metrics
were proposed which would ease comparison of reported technologies. Lastly, we assess the current state of these technologies
and suggest directions which may make them more accessible. 相似文献
115.
Elahe Moazzen Homeira Ebrahimzadeh Mostafa M. Amini Omid Sadeghi 《Journal of separation science》2013,36(11):1826-1833
In this work, for the first time, an ion‐imprinted polymer was developed for selective extraction and determination of gold ions. To increase the sorbent efficiency, this polymer was coated on a novel nanoporous carbon‐based material, carbohydrate‐derived Max‐Planck Gesellschaft 1, which is also the first example of grafting imprinted polymer on nanoporous‐carbon material. These particles were applied successfully for preconcentration of ultratrace amount of gold ions, following determination by flame atomic absorption spectrometry. Some effective factors on the efficiency of gold ions extraction, such as concentration and volume of eluent, sample and eluent flow rates, and also effect of interfering ions especially palladium and platinum ions, were investigated. The LOD was determined to be 0.27 ng/mL. Furthermore, the precision of the method was calculated to be 2.14% under optimal conditions with recovery more than 97.3%. The technique was also used to determine the concentration of gold ions in mine stone samples with satisfactory results. The accuracy of this method was investigated by determination of gold ions concentrations in several reference materials with certified gold content. 相似文献
116.
In this paper we characterize all prime and primary submodules of the free R-module R
n
for a principal ideal domain R and find the minimal primary decomposition of any submodule of R
n
. In the case n = 2, we also determine the height of prime submodules. 相似文献
117.
Hajibashi F. Amini Arabkoohsar A. Babaelahi M. 《Journal of Thermal Analysis and Calorimetry》2021,144(3):955-961
Journal of Thermal Analysis and Calorimetry - The paper focused on an analytical analysis of the main features of heat transfer in incompressible steady-state flow in a microconfusor with account... 相似文献
118.
Numerical Algorithms - We present a truly meshless method based on the thin plate splines for the numerical solution of the two dimensional forward-backward heat equation and give a robust... 相似文献
119.
Acoustical Physics - The results of the evaluation on the spatial and temporal changes of the underwater sound speed in the southern abyssal zone of the Caspian Sea are investigated. Experimental... 相似文献
120.
This note makes a correction to the paper “Top local cohomology modules and Gorenstein injectivity with respect to a semidualizing module”. 相似文献