查询词典 molecular

The transmission spectrum and the absorption spectrum of alcohol shows that the characteristic absorption peak shifts with alcoholicity due to the molecular configuration. A multiple regression model was established based on the position, the intensity and the shape of the characteristic absorption peak, and used to detect alcoholicity. The predictive results show a linear relationship between predicted values and real values in sonic range, and can be used as a means to detect the alcoholicity.

通过对酒精透射光谱和吸收光谱的研究发现，其特征吸收峰随浓度不同发生漂移，从分子结构能级角度对其做了定性解释；根据部分稳定的特征吸收峰处不同波长点的吸光度，利用最小二乘法建立了多元线性回归模型，运用此模型实现了根据特征吸收峰波长的位置、强度、形状来预测酒精浓度，测定数据与样品浓度之间在一定范围呈良好的线性关系。

Dyes ; hydrolysis ; alcoholysis ; kinetics ; CNDO/2; molecular mechanics ; reactive dyes

染料；水解反应；醇解反应；动力学； CNDO/2；分子力学；活性染料

The researchers then blocked aldose reductase activity and checked the responses of known molecular links in the chain of colon cancer cell growth.

接着，研究阻断醛糖还原酶活性，并检查响应已知的分子连接链，结肠癌细胞的生长。

With the assistance of molecular probes for reactive oxygen species, the production and localization of ROS derived from embryo, starch and aleurone layer of maize seeds with different ages were investigated under a laser scanning confocal microscope and a luminescence spectrometer.

借助活性氧发光分子探针，利用荧光光谱和激光共聚焦扫描显微技术，在不同年份的玉米种子吸胀早期，对其胚、淀粉和糊粉层细胞活性氧生成进行了定量和亚细胞定位分析。

Gas composition, gas carbon isotope and high molecular hydrocarbon released from organic inclusions in the same aliquot sample can be analyzed using the new crushing device.

应用此方法对江苏句容地区有机包裹体的来源及充注期次进行了探讨，包裹体成分特征表明句容地区经历了多期油气的充注。

From the point of view of molecular design, Al is a good candidate to introduce to the BO〓 groups to form a series of new alkali metal al...

本论文从分子设计的角度，在BO〓基团中引入Al原子，获得了一系列新的碱金属铝硼酸盐化合物。

The findings of present work show that organic/water ratio,alkali metal alkali, phase transfer catalyst, reaction time, reaction temperature, all of them have influence to the molecular weight and yield of the production.

详细研究了溶剂/水的配比、碱金属碱、相转移催化剂、反应温度、反应时间等因素对产品分子量和产率的影响。

The raw materials used by the method are green chemicals dimethyl carbonate and p-nitrophenol, and the catalyst is NaY molecular sieve, activated aluminum oxide or activated carbon which is impregnated by alkali metals or alkaline-earth metal compounds.

本发明涉及到一种合成对硝基苯甲醚的方法，该方法所用的原料为绿色化学品碳酸二甲酯和对硝基苯酚，催化剂是经碱金属或碱土金属化合物浸渍过的NaY分子筛、活性氧化铝或活性碳。

With the using of the low molecular alkane solvent, the pressure requried for the system is decreased largely.

重点论述了超临界流体技术在食品工业和医药工业中的应用，指出了其在今后的可能发展方向。

The quantitative relationship between the melting point of normal alkane and its molecular structure is proposed, based on the characteristics of mole-cular structure by using topological method.

根据分子结构的特点，应用拓扑方法首次提出了正烷烃的熔点与其分子结构之间的定量关系。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。