查询词典 ionization

In view of different volatile substance in beer, PEG column and FID （hydrogen flame ionization detector） were selected in the measurement. Besides, quantitation analysis of involatile compositions in beer could be done by internal standard method or by external standard method.

针对啤酒酒中不同的挥发性物质可选择PEG柱和氢火焰离子化检测器法进行检测；还可用内标法和外标法对啤酒中的不挥发组分进行定量检测分析。

The ionization enthalpies of acetic acid, chloro-, bromo- and iodo- acetic acids were measured at 5℃ intervals between 20℃ and 45℃ in aqueous solution by LKB-2277 Bioactivity Monitor.

本文用LKB-2277BioActivityMonitor以5℃的间隔测量了20-45℃温度区间乙酸、氯乙酸、溴乙酸和碘乙酸在水溶液中的电离焓。

Ionization was accomplished by using iodoethane and γ-propane sultone respectively.

通过碘乙烷和v－丙磺酸内酯对上述样品进行季铵化，合成了阳离子型及双离子型离聚物。

Sulfur compounds in the diesel were selectively derived into methylsulfonium salts by reacting with iodomethane in the presence of silver tetrafluoroborate, and characterized by positive-ion electrospray ionization fourier transform ion cyclotron resonance.

在四氟硼酸银的催化作用下，以碘甲烷对直馏柴油进行甲基衍生化反应，使其中的有机硫化物转变成极性较强的锍盐，再用电喷雾－傅立叶变换离子回旋共振质谱仪进行检测。

So far this method has been successfully applied to HPLC analysis of simple monosaccharides. A baseline separation of five monosaccharides was obtained under optimized isocratic condition. Both UV detector and electrospray ionization-Mass spectrometry were selected to determine the monosaccharide composition in real samples.

结合建立的衍生化方法与高效液相色谱HPLC，优化分离条件，并选择紫外和电喷雾—离子阱质谱两种检测模式对实际样品中所含的单糖进行分离分析，建立了5种单糖的常规定性定量方法。

Secondly, the ground-state ionization potentials from Lithium-like to Neon-like isoelectronic sequences (Z: 37-82) are calculated systematically by using of MCDF method, and the effect and contribution of electron-correction energy and high-order correct are analyzed in detail, then their variational relations with Z are obtained, these shows that Breit interactions become important for the energy as the nuclear charge Z increases, but that of the QED only fluctuates around 0, then a new extrapolation formulae for IPS along an isoelectronic sequence is set up.

其次，用MCDF理论系统地研究和计算了中高Z元素Li-like到Ne-like等电子系列基态电离能(Z=37-82)，详细分析了电子相关能和高阶修正能量的影响和贡献，得到其等电子系列随Z的变化关系，结果表明Breit贡献随着Z的增加而迅速上升，而QED的贡献随Z的变化不大，仅仅在零上下波动，并建立了不同等电子系列电离能的新拟合公式。

The electrospray ionization mass spectrometry was used to study the fragmentation pathway of kaempferol. The fragmentation pathway of kaempferol was also theoretically studied by means of Density Functional Theory.

采用电喷雾质谱技术对山奈酚的质谱过程进行了表征，并用量子化学方法对山奈酚的质谱裂解途径进行了理论研究。

Diethyl bis malonate was synthesized and analyzed by chemical ionization mass spectrum.

以丙二酸二乙酯为原料，合成了2， 2-二羟甲基丙二酸二乙酯。

Methods The serum proteomics patterns of 46 cases of breast cancer, 40 cases of benign mastopathy, and 40 healthy subjects were read with surface enhanced laser desorption/ionization-time of flight-mass spectrometry (SELDI-TOF-MS) to screen significantly differential proteins, and to develop the classification tree model for the diagnosis of breast cancer.

采用表面增强激光解吸离子化飞行时间质谱(SELDI-TOF-MS)蛋白芯片技术，检测46例乳腺癌患者、40例乳腺良性病患者及40例健康女性血清，筛选出有分类意义的差异蛋白并建立分类树模型。

Three hypotheses is put forward, based on microexamination about sample evaporation during determaination of isotope abundance by thermal ionization:1. Only atoms uncovered by outer layer atoms can be vapoured; 2. Atoms covered by outer layer atoms can diffuse but cannot vapoure; 3. The probability of diffusion of isotope atoms is in direct proportion to its probability of evaporation.

根据对热表面电离源同位素丰度测量过程中样品蒸发的微观研究，提出如下三条假设：(1 )未被外层原子覆盖的原子才能蒸发；(2 )被外层原子覆盖的原子只能扩散不能蒸发；(3 )同位素原子的扩散几率与蒸发几率成正比。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新