搜索结果: 1-15 共查到“化学 first”相关记录16条 . 查询时间(0.132 秒)
For the first time,scientists catch water molecules passing the proton baton
first time scientists water molecules proton baton
2016/12/13
Water conducts electricity, but the process by which this familiar fluid passes along positive charges has puzzled scientists for decades.But in a paper published in the Dec. 2 issue of the ...
Scientists Are First to See Elements Transform at Atomic Scale
Scientists Elements Transform Atomic Scale
2015/6/18
Chemists at Tufts University’s School of Arts and Sciences, collaborating with PerkinElmer and UCL (University College London), have witnessed atoms of one chemical element morph into another for the ...
Multiscale QM/MM Molecular Dynamics Study on the First Steps of Guanine-Damage by Free Hydroxyl Radicals in Solution
Multiscale QM/MM Molecular Dynamics Study First Steps Guanine-Damage Free Hydroxyl Radicals Solution
2012/2/29
Understanding the damage of DNA bases from hydrogen abstraction by free OH radicals is of particular importance to reveal the effect of hydroxyl radicals produced by the secondary effect of radiation....
Elastic Tensor and Thermodynamic Property of Magnesium Silicate Perovskite from First-principles Calculations
Thermodynamic property Elastic property MgSiO3 perovskite
2012/4/5
The thermodynamic and elastic properties of magnesium silicate (MgSiO3) perovskite at high pressure are investigated with the quasi-harmonic Debye model and the first-principles method based on the de...
First Principles Study of the Electronic and Magnetic Properties of Ce Doped SrMnO3
Colossal magnetoresistance Electronic structure First principles Perovskite
2012/4/5
The electronic and magnetic properties of Ce doped SrMnO3 have been investigated us-ing the pseudo-potential plane wave method within the generalized gradient approximation method by first principles....
Theoretical Study on First Hyperpolarizabilities of End-Capped Triply Branched Dendrimers
Dendritic chromophore Nonlinear optical Hyperpolarizability
2012/4/5
A series of end-capped triply branched dendritic chromophores have been studied by means of density functional theory calculations. It is found that the second order nonlinear optical properties of th...
First-principles Study on the Electronic Structure of Novel Titanium Yttrium Mixed-metal Nitride Clusterfullerene
TiY2N@C80 Electronic structure Doping Chemical modification First-principles calculation
2012/4/5
We present a first-principles study on the geometric, vibrational and electronic properties of a novel Y-based non-scandium mixed-metal nitride clusterfullerene (TiY2N@C80). Theoretical results indica...
Generic Mechanism of Optimal Energy Transfer Efficiency: A Scaling Theory of the Mean First-Passage Time in Exciton Systems
Energy Transfer Efficiency A Scaling Theory Mean First-Passage Time in Exciton Systems
2014/9/24
An asymptotic scaling theory is presented using the conceptual basis of trapping-free subspace (i.e., orthogonal subspace) to establish the generic mechanism of optimal efficiency of excitation energy...
Understanding and Predicting Thiolated Gold Nanoclusters from First Principles
Thiolate Gold Nanoclusters Density functional calculation Electronic structure Superatom complex
2010/3/9
This is an exciting time for studying thiolated gold nanoclusters. Single crystal structures of Au102(SR)44 and Au25(SR)18- (—SR being an organothiolate group) bring both surprises and excitement in t...
The 2nd International Forum on Homogeneous Catalysis and The First China-Swtizerland Bilateral Symposium on Catalysis
在中瑞双方国家自然科学基金委员会和上海有机所资助下，由瑞士ETH的Antonio Togni教授和我所麻生明研究员共同组织的The 2nd Internation...
专著信息
书名
3-Deoxy-3,3-difluoro-D-arabinofuranose: first stereoselective synthesis and application in preparation of gem-difluorinated sugar nucleosides
语种
英文
撰写或编译
作者
Xingang Zhang,Hairong Xia,Xicheng D...
专著信息
书名
Synthesis, spectroscopic characterisation and structure of the first chiral heteroleptic bis(phthalocyaninato) rare earth complexes. Chem.
语种
英文
撰写或编译
作者
Jianzhuang Jiang
第一作者单位
出版社
Commun., 2...
期刊信息
篇名
Drawing out the structural information of the first layer of hydrated ions:ATR-FTIR spectroscopic studies on aqueous NH4NO3, NaNO3,and Mg(NO3)2 solutions
语种
英文
撰写或编译
撰写
作者
Jun-Hua Liu,Yun-Hong...
Graduation stories: Native American student is first in family to earn bachelor’s(图)
chemistry
2007/5/9
May 8, 2007，LAWRENCE — When Talia Martin finished high school at the Bureau of Indian Affairs school on the Fort Hall, Idaho, Shoshone-Bannock reservation seven years ago, being a scientist seemed a d...
First- and Second-Derivative Spectrophotometry for Simultaneous Determination of Copper and Cobalt by 1-(2-Pyridylazo)-2-naphthol in Tween 80 Micellar Solutions
Copper Cobalt PAN Simultaneous Derivative spectrophotometry
2010/4/19
1-(2-Pyridylazo)-2-naphthol (PAN) has been used for the simultaneous determination of copper and cobalt at trace levels. PAN at pH 1.89 forms red and green complexes with copper and cobalt, respective...