查询词典 ionization potential

In addition, the addition of Si ni tang to culture of D.radiodurans could induce cell growth and protein expression. In this study, 2-D electrophoresis and Matrix Assisted Laser Desorption Ionization Mass Spectrometry were used to analyze the proteomic differences between adjunction of Mn and Si ni tang in normal cells.

实验方法是利用二维蛋白质电泳(2-D Electrophoresis)和基质辅助雷射脱附游离质谱仪(Matrix Assisted Laser Desorption Ionization Mass Spectrometry；MALDI/MS)来分析耐辐射奇异球菌在有或无锰离子与四逆汤的培养下，其菌体表现出的蛋白质种类与数量的差异。

The principle of using an air ionization chamber to monitor doses in heavy ion radiation research is described.

论述了采用平行板电离室在重离子辐射生物研究中监测剂量的原理。

The aliquot was determined and confirmed by gas chromatography-negative chemical ionization mass spectrometry using external standard method.

样品中三唑醇残留物由正己烷饱和的乙腈(含1%冰醋酸)提取，加入无水硫酸镁与无水醋酸钠振荡促使提取液分层后进行固相分散萃取净化，用气相色谱-负化学离子源质谱法进行测定与确证，外标法定量。

Study on the Crystallization Process of Labeled GL-7-ACA Acylase CA130 Complex 7β-bromoacetyl amino cephalosporanic acid (BA-7-ACA), an analog of glutaryl-7-amino cephalosporanic acid (GL-7-ACA), can inhibit and specifically alkylate GL-7-ACA acylase (CA130) from Pseudomonas sp. 130, forming a carbon-carbon bond between BA-7-ACA and the C-2 on indole ring of Trp-β4 residue of CA130.Here we reported that BA-7-ACA labeled CA130 (BA-C130) could self-catalyze the hydrolysis of BA-7-ACA during crystallization process. The hydrolysis was confirmed to be a reaction analogous to the one of GL-7-ACA by comparative MALDI-TOF (matrix-assisted laser desorption/ionization-time of flight) spectrometry analysis.

二、GL-7-AcA酰化酶CA130标记复合物的结晶过程研究溴乙酰氨基头孢烷酸（7β-bromoacetyl amino cephalosporanic acid，BA-7-ACA）作为戊二酰-7-氨基头孢烷酸（GL-7-ACA）的类似物，不仅能够抑制GL-7-ACA酰化酶CA130的活力，而且能通过在BA-7-ACA和CA130的β亚基第四位色氨酸吲哚环二位碳原子之间形成碳-碳共价键而将CA130特异的烷基化。

It is calculated according as the quantity of air molecules ionized by the alpha rays decayed by radon and its progeny as the air is inhaled to the ionization chamber by the air pump.

采用的测量原理是通过气泵把空气吸入电离室内，通过测量氡及其子体衰变放出α射线使空气分子电离的量来间接测量空气中的氡浓度。

Intelligent nuclear instrument has been a dominant developing direction of radioactivity measurement instrument. The instrument for radon measurement of air pulse ionization chamber, based on the theory that alpha rays decayed by radon and its progeny can ionize the air molecules, can measure the radon concentration accurately.

智能核仪器已成为放射性测量仪器发展的一个主导方向，利用氡及其子体衰变放出α射线能使空气分子电离的理论设计的空气脉冲电离室α测氡仪可以准确地测量空气中的氡浓度。

A method based on liquid phase microextraction with gas chromatography-flame ionization detector was established for the determination of aminopyrine,antipyrine and barbital in Urine.

建立了一种以液相微萃取(Liquid Phase Microextraction，LPME)与气相色谱-氢火焰(LPME-GC-FID)联用技术为基础的测定尿样中氨基比林、安替比林和巴比妥的方法。

We discussed the ionization mechanism and the alignment mechanism responsible for the fragment ions'anisotropic angular distribution in detail.

对电离机理以及碎片离子的各向异性分布的原因进行了详细讨论。

The anisole is studied by using multiphoton ionization technique and time-of-flight mass spectrum under the radiation of the 355 nm laser.

在355 nm激光作用下，利用多光子电离技术结合飞行时间质谱对苯甲醚分子进行了研究。

Koopmans theorem is an approximation in molecular orbital theory , such as density functional theory , or Hartree-Fock theory, in which the first ionization energy of a molecule is equal to the energy of the highest occupied molecular orbital, and the electron affinity is the negative of the energy of the lowest unoccupied, i.e.

如同密度泛函理论或者Hartree－Fock理论，分子轨道理论中常用到的Koopmans 定理也是一种近似。

When I started coding, I had problems with the ASF file writer.

当我开始编码，我曾与ASF文件作家的问题。

I know that in one of the schools the boys have risen up in the classroom and enlisted in a mass.

如果你们也和他们一样，是集体自愿的话，你们的老师将是多么地光荣啊。