查询词典 surface charge density

By density functional theory B3LYP method with 6-31G basis set, the geometry and electronic structure of the natural inhibitor and derivatives of Adenylosuccinate synthetase were optimized and their thermodynamic stability was also analyzed. The relationship between their electronic structures and bioactivities were discussed based on the Mulliken bond order, atomic net charge distribution and molecular surface electrostatic potential.

利用密度泛函B3LYP方法选择6-31G基组对腺苷酸琥珀酸合成酶天然抑制剂及其衍生物的结构进行优化，并对其稳定性进行了分析，同时采用Mulliken键序、原子电荷分布、表观静电势等对AdSS抑制剂及其衍生物电子结构与其生物活性相关性进行了理论研究。

On the other hand, the electrical properties of MOSFETs such as IDS-VDS and IGS-VGS were investigated. The interface quality of high-κ thin films and substrate interface was investigated through subthreshold swing, gated-diode character-istics, and charge pumping methods. After analysis, some important parameters, such as the density of interface trap per area, effective capture cross section, and the surface recombination velocity (s0), were extracted.

对於金氧半电晶体的电气特性研究包含：IDS-VDS和IGS-VGS，并利用次临界摆幅、闸二极体(gated-diode)与电荷汲引法来研究高介电系数薄膜和矽之间的界面特性，经由分析可得界面缺陷密度、界面缺陷等效捕获截面积及载子表面复合速率(s0)等等的重要参数。

Theoretical predict is given, that electron density of inner shell at nuclear surface decreases and energy level also decreases with increasing of charge state, nuclear lifetime increases slightly with previous reason but increases with a jump when energy level drops to a critical value.

理论预言了随着电荷态的增加，内壳的电子在核表面的电子密度降低，内壳电子能级也降低，不稳定原子核的寿命由于前一原因而缓慢增加，但当内壳电子能级降到特殊能量时产生剧烈增加。

The characteristic absorption spectrums of intracellular hemoglobin were detected and analyzed by ultraviolet spectrum scanning technique. The investigation indicated that complicated physiology regulates and controls process, such as red blood cell membrane elasticity deformation, Cyto-membrane liquid crystal state phase transition, the change of hemoglobin configuration, membrane cytoskeleton protein network reassembling or despiralization, and membrane surface electric charge density reapportion were directly influenced by the gentle changes of pH valve in autologous plasma environment. Further, the remarkable diversities of erythrocyte carrying-oxygen ability were appeared in the different pH conditions.

实验研究表明，红细胞弹性形变、细胞膜液晶态相变，胞内血红蛋白分子构型改变，膜骨架网络重新组装或解旋、以及膜表面电荷密度重新分配等复杂的生理调控过程与自体血浆环境中pH值的轻微波动直接相关，可能造成了不同pH条件中活性红细胞携氧能力显著不同。

Furthermore, the boundary condition exchange equation of constant surface potential change to constant charge density is derived for these equations.

而在反离子价数提升的状况下，当有越大的反离子价数会得到越低的空间电位，而同样空间的电位分布随距离表面的距离增加有更快速度的衰减。

The simultaneously measurements of surface electric field and Maxwell current density show that, underneath active thundercloud, surface Maxwell current density reflects the change of cloud charge sources, and is quasi-steady between lightning discharges.

利用实验观测和模式计算相结合的方法，对传导电流、位移电流和电晕电流的相对重要性作了估计。

The effect of variation particle growth rate constants and the gas temperature on the density of the dust particles was investigated. The different forces acting on the nanoparticles and it can also be seen that an increase in nanoparticle size results in a higher negative charge on the nonoparticle's surface was investigated. The distribution of positive, neutral, and negative particle charge were computed.

本论文系统介绍了近年来迅速发展的流体模型，给出气体压力对粒子生长的影响，气体温度对尘粒密度的影响，分析了纳米粒子受力情况和粒子大小与充电量的关系，并且得出粒子浓度和电子温度随时间的变化，以及正离子负离子和电子的浓度在等离子体中的分布。

The results show that the sample possesses two-dimensional (2-D) hexagonally ordered mesoporous structure, and the pore volume of the sample is 1.88 cm3/g, the specific surface area is 1 394 m2/g; it possesses mesoporous structure and narrow pore size distribution, the average pore size is 3.4 nm. The supercapacitor has good electrochemical performance, the specific capacitance is 95 F/g at a charge/discharge current density of 500 mA/g after 10 000 cycles, and specific capacitance fluctuates between -4% and 4%.

结果表明：样品孔结构呈二维六角有序分布；该样品的孔体积为1.88 cm3/g，比表面积为1 394 m2/g，具有典型的中孔结构和集中的中孔分布，它的最可几孔径为3.4 nm；制备的中孔炭作电极材料组装的超级电容器有良好的电化学性能，在500 mA/g的充放电电流密度下，循环10 000次的平均比电容高达95 F/g，比容量波动范围仅为-4%~4%。

ABSTRACT Power electronics devices are developed rapidly. There are some factors which influence the protective properties of the devices, including such as electrical characteristics of protection materials, the interface conditions of protective materials-pn junction, the surface effective charge density, the polarizable or unpolarizable properties of organic protective materials, etc.

电力半导体器件是近期发展起来的一类功率电子器件，其表面保护与其它电气元件不同，一方面要考虑器件表面绝缘保护材料的电性能和含杂等因素；另一方面，器件的表面钝化保护材料与器件接触后，器件的界面情况、材料与器件接触带电情况、以及材料所含官能团的极性等情况，也是影响器件性能的主要因素。

It was also showed by the results of linear polarization and impedance spectroscopy that hydrogen storage alloys coated could increase the exchange current density I0 and reduce the electrochemical reaction resistance, illustrating that the surface coating could increase electrocatalytic activity and enhance the diffusivity of electric charge in alloy surface, so that the high-rate discharge performance of the coated electrode was improved.

线性极化扫描和电化学阻抗图谱分析结果表明，包覆Cu、Cu-Co及Cu-Ni处理改善合金电极的交换电流密度I0，降低电化学阻抗，说明包覆处理改善合金表面的电催化活性，加快合金表面电荷的迁移速率，从而提高高倍率放电能力。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。