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<正> To understand how the order arises via photo-physical processes in living organisms and how the biological order is......
Under the high-speed vibration milling conditions,the solvent and catalyst-free azo-Michael addition of chalcone derivat......
Competition between C-C and C-H Activation in Reactions of Neutral Nickel Atom with Cycloalkanes(n =
A theoretical investigation of the reaction mechanisms for C-H and C-C bond activation processes in the reaction of Ni w......
Influence of Molecular Structure on the Dimerization Reactivity of Germaaromatic Compounds: a Theore
Density functional theory (DFT) calculations, at the B3LYP/6-311G** level of theory, were performed to study the reactio......
An efficient palladium-catalyzed copper- and amine-free Sonogashira coupling reaction of aryl bromides and chlorides was......
A solid superacid was prepared as a catalyst.The catalyst was characterized by ammonia temperatureprogrammed desorption,......
Non-aqueous Suspension Polycondensation in NMP-Ca Cl_2/Paraffin System―A New Approach for the Prepar
A non-aqueous suspension polycondensation method was proposed to proceed the reaction of p-phenylenediamine and terephth......
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Before finally leaving occupied territory I had paid two visits to the Border Region.In the summer of1940 I paid a short......
in many industrial situations, edge detection of 3-D objects is frequently required.Typical examples are found in dimens......
The coarsening behavior of L12 and D022 in Ni75AlxV25-x (x,at.%) alloys including coherent strain was investi-gated usin......
平路跑车,又称之为公路赛车,按其动力可分为电动和油动(内燃机),按其大小可分为1/8和1/10,因其速度快(可达80-100km/h),所以有人......
In this paper, we studied in detail the mechanism of 1,2-cycloadditions of the first excited singletoxygen (O_2(~1Δ_g)......
Aliphatic tertiary amino-group N-substituted acrylamides, N-acryl-N′-methylpiperazine (AMP)and N-methacryl-N′-methylp......
Study was made of the behaviour of ordering transformation in Ti_3AI-Nb alloy,including theordering at high temperature......
首先对二氧化碳甲烷化的二种机理进行了回顾，并对这二种机理存在的可能性进了探讨。结果表明，二氧化碳甲烷化经过一氧化碳加氢的可能......
The potential energy surface for the CH3S + NO2 reaction has been studied using the ab initio G3 (MP2) method. A variet......
While many characters have been used to define the nature of the angiosperms in living plants, the list must be reduced ......
我取出来,打开一看,不禁怔住了……记住一个仅是认识的人的名字,43年似乎是段很长的时间。我已经忘了那位老太太的名字,她是我12岁......
The conflicting application,an important concept in the patent law,is applicable in the patent examination proceed- ings......
From the view of the domestic and international energy,environment and operation situation,the paper analyses the confro......
In order to investigate the expression and functional role of HERG1 K+ channels in leukemic cells and leukemic stem cell......
A convenient and direct per(poly)fluoroalkylmethyl-mtroducing cyclopropanation reaction was described. In the presence ......
Under normal conditions, l-l and 1-2 thermal elimination reactions of alkylhalide, giving hydrogen halide and alkene, c......
It is well known that the reaction between UF_6 and SiH_4 cannot take place below 140℃. Recently we found in our exper......
As world automakers speed into operations in China,analysts are reminding them to proceed with caution “We have no inte......
The mechanisms of insertion of O—H bond of Rh(Ⅱ)-methylene carbene into methanol and ethanol were studied by using B3L......
Cationic ring-opening polymerization of 3,3-bis(chloromethyl)oxacyclobutane catalyzed by BF_3·OEt_2 was carried out in ......
Theoretical Study on the Hetero-Diels-Alder Reactions between 3-Pyridinedithioesters and 1-Phenylsul
The mechanism, catalytic effect and solvent effect of the hetero-Diels-Alder reac- tions between 3-pyridinedithioesters ......
In the catalytic reduction atmosphere of H2+CH4+C4H4S, the ball-milled precursor (NH4)2MoS4 is heated to 300C for decomp......
The reactions of 2-methylbenzimidazole or 2-methylbenzimidazolium iodide with aromatic aldehydes are accelerated under m......
Lynch syndrome, also known as hereditary non-polyposis colorectal cancer (HNPCC), is the most common form of hereditary ......
Pulsed laser photolysis/laser-induced fluorescence (LP-LIF) is utilized to measure rate constants for C_2(a~3(multiply ......
Two novel diphoshinoamine ligands have been synthesized. Combination of Cr(III) and methylaluminoxane(MAO) generated act......
The photo-promoted carbonylation of chloroalkanes with carbon monoxide was carried out under ambient conditions with cop......
The kinetics and mechanism of lactic acid oxidation in the presence of Mn(II)and Ce(IV)ions by chromic acid were studied......
Palladium-catalyzed homo-coupling of boronic acids with supported reagents in supercritical carbon d
Palladium-catalyzed homo-coupling of arylboronic acids could proceed smoothly with a commercially available resin functi......
The possibility to carry out Cu-catalyzed cross-couplings under ligandless conditions was studied.It was found that by u......
The alkylation of toluene with 1,3-pentadiene to produce pentyltoluene was carried out to obtain 2,6-dimethylnaphalene,w......
Inner Mongolia Zhonggu Mining IndustryCompany Limited (Zhonggu) held in earlyJuly a groundbreaking ceremony for a chlor......
PKU International HealthCare Group, a wholly-owned subsidiaryof Founder Group, held a groundbreaking ceremony on July15......
Two possible reaction mechanisms of VS~+(~3∑~-,~1Γ)with CO in the gas phase have been studied by using B3LYP/TZVP and ......
Inhibition of NMDA receptor and GSK3β vmediates the fast onset of antidepressant like natural produc
OBJECTIVE To investigate the fast antidepressant effect and the underlying mechanism of it.METHODS C57BL/6 mice were exp......
With density functional theory, the mechanism of water-enhanced CO oxidation on oxygen pre-covered Au (111) surface is t......
The adsorption and decomposition of H2O on GaN(0001) surface have been explo-red employing density functional theory (DF......
The reactions of Mn+(7S,5S) with CS2 have been studied at the B3LYP/TZVP level on both septuplet and quintet potential e......
A polyethylene glycol (PEG)-supported NADH model as a novel organic reductant was designed and synthesized. The reductio......
