电极电势

A generalized mathematical model was developed to describe the distribution of over-potential.Dimensionless variables μ and ω that characterize the polarization and influence of side electrode reaction in the system,were derived from modeling.Adomian's decomposition methodADM）was used to solve the nonlinear differential equation of the model to obtain an approximate analytical solution,which was in the form of algebraic expressions of infinite power series.By the solution,the relationship between over-potential distribution and average selectivity could be easily calculated without solving the nonlinear model time and again.

建立了描述超电势分布的普遍化数学模型，归纳出表征电极极化和副反应影响的量纲1数μ和ω，并用ADM（Adomian's decomposition method）对该非线性微分方程模型求解；所获得的逼近解代数表达式，可方便地计算不同参数下超电势分布对平均选择性的影响，而毋需反复求解模型微分方程。

In this thesis the modulated potential-time waveforms technique and the time-resolved electrochemical quartz crystal microbalance method were studied.

本论文研究了电势调制技术和时间分辨电化学石英晶体微天平方法，并将这些技术和方法用于电极过程动力学的研究。

This leads to the different dynamic transferring properties of thephoto-generated carriers and thereby the variation of positive photo-currents ofthe above two kinds electrodes.

而在纳米薄膜电极/溶液体系中，两种电极内部的电势分布梯度则不同，从而导致光生载流子具有不同的传递动力学特性。

The result of simulation indicates that a 2-dimension function may be adopted to describe measuring sense field and potential distribution accord with exponential function on potential gradient line from transmitting electrode to measuring electrode.

模拟计算结果表明，三维电极阵列的敏感场最终可以用二维函数表述，在主发射电极到测量电极的电势梯度线上，电势值的变化规律符合指数函数特征。

Plot the logarithms of the cumulative trimethylamine concentrations (0.50, 1.50, 2.50, and 5.00μg per mL) versus potential, in mV, and determine the slope of the Standard response line for the electrode.

划出累积的三甲胺浓度(0.50，1.50，2.50，and 5.00μg per mL)对数表与其相对的电势mV。得出电极标准响应线的斜率。

The sodium dihydroxy phosphate solution was added 0.4% triethylamine and adjusted its pH to 6.0 by adding 20% phosphate acid. The electrodes potential were set at 300mV, 400mV, 550mV and 650mV.

液相色谱的流动相为30mmol/L磷酸二氢钠水溶液：甲醇=90：10(其中水溶液中加入0.4%三乙胺，并用20%磷酸调pH至6.0)；四组电极的检测电势分别为300mV、400mV、550mV和650mV。

Hydrogen storage alloy electrode ; Hydrogen evolution reaction ; Overpotential ; Faradaic impedance

贮氢合金电极；氢气析出反应；超电势；法拉第阻抗

However, the highly conductive electrode material on the surface of the body coerces the contact surface underneath the electrode to be changed into an equal potential This reduces the current density at the interior of the body and affects the distribution of the sens ing field.

但是，导电材料的电极将其下的被测生物体表面强制为等电势，从而降低生物体内的电流分布密度，影响场域内部的电场分布。

The current decay of CO oxidation at Pt SPE gas sensing electrode in short time scale has been studied.

对短时间内Pt－SPE气敏电极上CO氧化电流的衰退现象的研究表明，Pt表面无CO吸附态情况下，衰退主要与电极阳极极化后Pt表面氧化程度加深有关；采用动电势扫描法可使电极对CO氧化的催化活性基本恢复，但随着电极的进一步极化，衰退仍会继续。

There are some methods used commonly to immobilize POM on electrode surface, for example, electrodeposition of POMs on the electrode surface from a polyoxometalates solution under constant potential, self-assembly and layer-by-layer deposition, entrapment POM into polymers matrics and sol-gel method. There are some drawbacks using above methods.

杂多酸化学修饰电极主要有以下几个方法：恒电势下，多酸阴离子在电极表面的电沉积；多酸阴离子在电极表面的自吸附；聚电解质和多酸阴离子在电极表面的交替沉积；把多金属氧酸盐包埋在各种聚合物中；溶胶－凝胶法。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。