查询词典 coefficient of absorption

Cuprous oxide (Cu2O) is a direct band gap semiconductor with optical band gap energy of 2.0 - 2.5eV. It is a non-stoichiometric p-type semiconductor. The attractiveness of cuprous oxide as a photovoltaic materials because of its high absorption coefficient in visible regions, non-toxicity, abundantly available starting material on the earth and low cost producibility.

氧化亚铜为直接能隙P型半导体材料，是属於一种非化学计量比缺陷半导体(non stoichiometric defect semiconductor)，光学能隙值约在2.1-2.5eV之间，具有低制造成本、无毒性、起始材料在自然界中含量丰富等优点，并且在可见光范围内具有相当高的光吸收系数，因此主要的应用可用来制造太阳能电池元件。

Regarding the extinction of every kind of scatter, the results of the sum of scattering and absorption coefficient, and that from forward scattering theory are compared and discussed.

关于各类散射体的衰减，本文比较了散射系数和吸收系数之和，与前向散射定理的结果，并对前向定理的适用性进行了讨论。

The paper studies the theories of elliptical crystal analyzer of spectrograph,analyses the integrated reflectivity and absorption coefficient.

探讨了椭圆弯晶谱仪理论原理，分析了积分反射率和质量吸收系数。

We made the light absorption coefficient measurement system with Nuclepore filter which were used to collected aerosol particles. The system has one laser beam which is split into two laser beam, one being information light which transfer through glass pipe, the other being reference light which transfer directly through atmosphere. so the measurement system could well eliminate the effect of all kinds of measurement errors which were caused by optical ullage and circuit noises and power fluction.

本测量系统利用核孔过滤膜采集气溶胶粒子，测量系统的光路由同一光束分为两路光组成，一路为信号光，通过光管传输，另一路为参考光，通过信号光和参考光相比很好地消除了测量系统中由于光管损耗、电路放大倍数的差异及光功率起伏等因素所引入的误差对吸收系数测量的影响。

The results show that the introduction of 2-, 3- and 4- substituent of group leads to a bathochromic shift of position of the maximum absorption wavelength λmax, and also increases the molar extinction coefficient εmax.

2位、 3位和4位引入取代基可使酚类化合物的最大吸收波长λmax发生红移，摩尔消光系数εmax明显提高。

The formation of metal complexes causes a large bathochromic shift of the absorption bands and an increase in the molar extinction coefficient compared with the free ligands.

并从一些金属络合物的红外光谱中C(8)=O吸收峰在络合前后的变化，进一步增强了对配位结构的了解。

Difference of chromophoric dissolved organic matter concentration and constitution, mainly resulted by different source of CDOM, causes the seasonal variation of its absorption coefficient and slope S value.

利用2006年8月、 11月和2007 年3月太湖梅梁湾水样实验室测定的水体组分固有光学特性数据和水质分析数据，分析水体中各组分在不同季节的吸收特性，并讨论不同季节光谱吸收的主导因子。

In the preformulation study, the ultraviolet spectrum and HPLC methods for the assay of α-asarone were established firstly and then the physicochemical properties, especially the octanol/water partition coefficient and the solubility in various solvent systems such as alcohol, PEG 400, IPM, octanol were examined. The prediction permeability was then compared with actual transdermal parameters obtained from the in-vitro diffusion study , and feasibility of drug transdermal absorption was then analyzed.

在制剂开发的处方前研究工作中，首先建立了α-细辛醚的紫外及HPLC分析方法，测定了药物的油水分配系数及在生理盐水、各系列浓度的乙醇、PEG400、肉豆蔻酸异丙酯、正辛醇等溶媒中溶解度；其次，确立了药物体外经皮渗透研究的方法，并考察溶媒及促渗剂(乙醇、丙二醇、肉豆蔻酸异丙酯等)对药物体外经皮渗透性能的影响，计算药物经皮渗透的各参数，根据药物的药物动力学参数，分析了药物经皮吸收的可行性。

On this basis, a LDA-pumped Nd: BGO Planar Ring Osicllator laser is proposed and designed and fabricated, taking the advantages of its high Verdet coefficient and strong absorption of pumping light, etc. Primary experiment is carried out.

在此基础上，发展了单块平面环形腔单频激光器的本征偏振理论，提出了利用具有良好磁光性能的Nd∶BGO晶体，制成LDA泵浦PRO单频激光器的新设想，并给出设计实例，同时进行了初步的实验研究。

The study on the polarized spectral character is an important basis job of detectingsuspended sediments by polarization remote sensing. First, many research jobs on thissubject are introduced. Then the correlative theories of polarization and water-color remotesensing are addressed, including spectrum character, absorption and scattering coefficient ofpure water, as well as spectrum feature of suspended sediment.

在对国内外有关利用卫星遥感提取悬浮泥沙方法和多角度偏振技术作了介绍的基础上，文中先介绍了偏振光遥感的有关知识和利用传统遥感方法提取悬浮泥沙信息的理论基础包括纯水的光谱特性、吸收和散射系数，及悬浮水体的光谱特征等。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。