查询词典 ionization

In this work, a semi-quantitative method of electrospray ionization mass spectrometry has also been established, and this method can conveniently measure the content change of main ginsenosides in ginsengs for untreated and treated seeds.

建立了电喷雾质谱分析人参提取物中人参皂苷的半定量方法，方法便捷地反映了未处理及处理后的人参种子所栽培的人参中皂苷成分的含量变化。

The EL excitation process was attributed to hot electron impact ionization of Si QDs by the dependence of the EL spectra on the change of the energy distribution of hot electrons.(3) Efficient green-blue ACTFEL was first obtained from Si QDs in Si layers of Si/SiO〓 superlattices.

利用磁控反应溅射方法制备出含硅量子点的富Si-SiO〓薄膜，通过热退火并结合喇曼光谱和光致发光谱判定了其中硅量子点的存在和平均尺寸，将发光机理归结为硅量子点中的量子尺寸效应。

Pesticides were extracted from tea with hexane-acetone (volume ratio is 1:1) in an ultrasonic bath and cleaned up on a Florisil and neutral alumina column, then were determined by gas chromatography with negative chemical ionization mass spectrometric detection in the selected ion monitoring mode, and with heptachlor epoxide as the internal standard. Spiked blank samples were used as standards to counteract the matrix effect observed in the chromatographic determination.

茶叶试样用V/V=1/l混合提取剂超声提取，经Florisil矽藻土和中性氧化铝混合层析柱净化后，以环氧七氯为内标物，采用GC-NCI-MS的选择离子监测方式分析；探讨了茶叶试样的基体诱导色谱响应增强影响所产生的分析误差及其减小的措施，用空白试样基体匹配校准曲线法定量分析。

Ionization-dissociation of methyl bromide in intense laser field was studied using home-built reflection time-of-flight mass spectrometer.

利用自制的反射式飞行时间质谱仪研究了多原子分子CH3Br在强激光场中的电离解离。

The size and the chemical composition of an individual bioaerosol particle were detected in real-time by matrix-assisted laser desorption/ionization on the home-built aerosol time-of-flight mass spectrometer.

利用基质辅助激光解吸电离技术，在自行研制的气溶胶飞行时间质谱仪上实时探测单个生物气溶胶粒子的粒径和化学成分。

In order to make the uncertainty of the dose index measurement in the head phantom reasonable for the medical diagnostic X-ray radiation sources of the computed tomography, the measurement uncertainty components were analyzed according to the mathematical model for the computed tomography dose index test method with a 100 mm ionization chamber.

摘 要：为了使医用诊断计算机断层摄影装置X射线辐射源在模体中的剂量指数测量结果的不确定度评定合理，基于用带有100 mm长杆电离室的积分剂量仪测量CT剂量指数的数学模型，对其测量不确定度来源进行分析，列出了方差、灵敏系数及标准不确定度的计算公式，从而给出了CT剂量指数测量的合成标准不确定度和扩展不确定度。

Commonly,office with air-condition lacks of natural airiness,people breathe out CO2,the fog that is coursed by smoking,some office equipment.These things emante maleficence to bulk in the office.There are wet resorting in the air-condition system,this becomes the "dirt-hiding place".Computers,displays,hand-holding telephone and other electric equipments can produce certain amount of ionization radialization.Some building materials also release certain injurant.

带空调的办公室一般缺乏自然通风，人们呼出的二氧化碳、吸烟产生的烟雾、某些办公设备散发的有害气体积聚其中；空调系统里有水分滞留，成为某些细菌、霉菌病毒的&藏污纳垢&之地；电脑、显示器、手持电话及其他电子设备均产生一定剂量的电离辐射；有的建筑材料本身也释放某些有害物质。

In this respect, they violate the material law of ionization.

在这一点上，它们不受电离法则的约束。

At the same time, these two methods of accuracy and precision compared. It is to answer why the majority of the conductivity method used to measure the reasons for the ionization constant acetic acid.

同时对这两种方法的准确度和精确度进行了比较，也回答了为什么大多数用电导率法来测HAc电离常数的原因。

Electric conductivity method is one of the means which can be used to determine the ionization equilibrium constant of electrolyte solution.

离解平衡常数是研究电解质溶液性质的重要参数，在研究化学问题，如反应速率、化学活性、吸收等具有重要意义。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。