搜索结果: 16-30 共查到“知识库 化学物理学”相关记录378条 . 查询时间(1.243 秒)
硅基微雷管的原位装药及性能研究
硅基微雷管 原位装药 发火感度 输出威力
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2015/4/2
微机电安全保险机构芯片化集成技术的发展，对基于微机电制造工艺的硅基微雷管提出了需求，雷管装药尺寸的减小要求含能材料感度高、起爆威力大。为解决微小尺寸敏感药剂装填的技术难题，文中采用原位生成多孔叠氮化铜的方法，对硅基微雷管进行装药研究。依据GJB/Z 377A—1994 感度试验用兰利法测试硅基微雷管的发火感度，使用电流环测试硅基微雷管发火实际利用的能量，同时对输出威力进行定性测试。测试结果表明：发...
在基因组测序技术领域，科学家在不断追求速度更快、成本更低的方法和设备。据物理学家组织网10月30日报道，最近，美国伊利诺斯大学厄本那—香槟分校最近开发出了一种新奇的方法：把石墨烯纳米带（GNR）夹在两层有纳米孔（内径约1纳米）的固体膜中间，再让DNA分子穿过这种“三明治”设备，以此来感知辨认所通过的DNA碱基对。
对共沉淀法制备的CuO/ZnO/CeO2-ZrO2催化剂在甲醇水蒸气重整制氢反应体系中的性能进行了考察,并利用统计学实验设计方法对该反应的反应条件进行了优化。选择反应温度、水醇比和甲醇气体空速为独立要因,利用全因子实验设计方法,得到反应温度对两个响应值(甲醇转化率和重整气中CO物质的量分数)的影响最为显著,甲醇气体空速对重整气中CO物质的量分数的影响最小。固定甲醇气体空速为300 h-1,利用中心...
[Cu(Gly-Gly)(Im)]·2H2O的合成、晶体结构及热化学性质
咪唑 硫酸铜 晶体结构 标准摩尔生成焓
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2014/3/17
以五水硫酸铜、甘氨酰甘氨酸(Gly-Gly)、咪唑(Im)为原料,制备了甘氨酰甘氨酸咪唑铜配合物,通过X射线单晶衍射测定了配合物的结构。该晶体属单斜晶系,P21/n空间群,a=1.0213(6)nm,b=0.7023(4)nm,c=1.5911(9)nm,β=102.393(9)°,V=1.1147(11)nm3,Z=4。用溶解量热法分别测定了CuSO4·5H2O(s)+Gly-Gly(s)+Na...
Approximate L-State Solution of the Rotating Trigonometric P鰏chl-Teller Potential
Schrodinger equation trigonometric Poschl-Teller (PT) potential Kratzer potential Nikiforov-Uvarov method
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2012/5/28
The trigonometric P\"oschl-Teller (PT) potential describes the diatomic molecular vibration. We have obtained the approximate solutions of the radial Schr\"odinger equation (SE) for the rotating trigo...
Unphysical artifacts are responsible for molecular orientation with half-cycle pulses
Unphysical artifacts molecular orientation half-cycle pulses Chemical Physics
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2012/5/31
Sub-cycle electromagnetic pulses in the Terahertz region are considered to be one of the best ways to orient molecules. The simplest option corresponds to half-cycles pulses in the sudden regime, for ...
Local Equivalence of Reversible and General Markov Kinetics
Local Equivalence of Reversible General Markov Kinetics Chemical Physics
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2012/5/29
We consider continuous--time Markov kinetics with a finite number of states and a given positive equilibrium distribution P*. For an arbitrary probability distribution $P$ we study the possible right ...
The lowest excited configuration of harmonium
The lowest excited configuration of harmonium Chemical Physics
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2012/5/29
The "harmonium model" (or "Moshinsky atom") is usually regarded as an exactly solvable laboratory bench for quantum chemistry. In practice, only the ground state for the system has been considered her...
About diffusion in porous medium: the role of the correlation length
current transient electrochemical crystallization reaction diffusion kinetics porous systems
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2012/5/29
In this paper we develop a model to describe the diffusion process in a porous medium. For the observed decrease in current yield, we propose other causes than difference in diffusivity, which we cons...
NMR Based Diffusion Pore Imaging by Double Wave Vector Measurements
NMR Diffusion Pore Double Wave Vector Measurements Medical Physics Chemical Physics
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2012/5/29
In porous material research, one main interest of nuclear magnetic resonance (NMR) diffusion experiments is the determination of the exact shape of pores. It has been a longstanding ques-tion if this ...
The structure of colloidosomes with tunable particle density: simulation vs experiment
Colloidosome Monte Carlo simulation scanning electron microscopy radial distribution function
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2012/5/29
Colloidosomes are created in the laboratory from a Pickering emulsion of water droplets in oil. The colloidosomes have approximately the same diameter and by choosing (hairy) particles of different di...
Modification of the Gay-Berne potential for improved accuracy and speed
Modification of the Gay-Berne potential accuracy and speed Chemical Physics
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2012/5/29
A modification of the Gay-Berne potential is proposed which is about 10% to 20% more speed efficient (that is, the original potential runs 15% to 25% slower, depending on architecture) and statistical...
Nonadiabatic Dynamics in Open Quantum-Classical Systems: Forward-Backward Trajectory Solution
Nonadiabatic Dynamics Open Quantum-Classical Systems Forward-Backward Trajectory Solution Chemical Physics
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2012/5/29
A new approximate solution to the quantum-classical Liouville equation is derived starting from the formal solution of this equation in forward-backward form. The time evolution of a mixed quantum-cla...
Ehrenfest dynamics is purity non-preserving: a necessary ingredient for decoherence
Ehrenfest dynamics purity non-preserving necessary ingredient decoherence Chemical Physics
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2012/5/28
We discuss the evolution of purity in mixed quantum/classical approaches to electronic nonadiabatic dynamics in the context of the Ehrenfest model. We claim that the evolution of a statistical Ehrenfe...
Experimental Verification of the Chemical Sensitivity of Two-Site Double Core-Hole States Formed by an X-ray FEL
Experimental Verification Chemical Sensitivity Two-Site Double Core-Hole States X-ray FEL
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2012/5/17
We have performed X-ray two-photon photoelectron spectroscopy (XTPPS) using the Linac Coherent Light Source (LCLS) X-ray free-electron laser (FEL) in order to study double core-hole (DCH) states of CO...