查询词典 ionization potential

The development and application of matrix assisted laser desorption ionization time of flight mass spectrometry to the analysis of carbohydrates and their conjugates were reviewed.

综述了基质辅助激光解吸电离-飞行时间质谱(MALDI-TOF-MS)的发展、在糖类化合物结构研究时常选用的基质，以及在不同类型糖化合物分析中的应用。

The evolution of a molecular system excited above its ionization threshold depends on a number of parameters that include the nature of the excited states and their couplings to the various continua.

被激发到电离阈值以上的分子体系的演化依赖于激发态的特征和与连续态的耦合等多种参数。

The results show that the electron number density decays fast, and the lifetimes decrease with ionization degree increasing.

结果表明，电子密度随时间快速衰减，电子寿命随电离度的增大而减小。

Comparing with the result of methyl iodide in intense laser field, some differences are observed:(1) at the same laser field intensity, the highest charged fragment ion of methyl bromide was Br(superscript 3+), lower than I(superscript 6+) of methyl iodide;(2) the dehydrogenation channel was observed in the multiphoton dissociation or Coulomb explosion of methyl bromide, but was not observed in the case of methyl iodide;(3) HBr(superscript +) was observed, but there was no similar channel in the case of methyl iodide;(4) for methyl bromide, the valid charge distance of Coulomb explosion increases with the product of p and q; while in the case of methyl iodide, the distance remained almost the same;(5) the producing channel of CH(superscript + subscript m)(m=0, 1, 2) is different from the ionization-dissociation of methyl iodide in which the stepwise dissociation of CH3(superscript +) was thought to be the main channel, CH(superscript + subscript m)(m=0, 1, 2) of methyl bromide are mainly from the products of the direct dissociation of the dehydrogenated parent ions instead of the stepwise dissociation of CH3(superscript +).

与碘甲烷在强场中的实验结果对比发现：(1)在相同的激光场强下，碘甲烷电离解离的最高价碎片离子为I(上标 6+)而溴甲烷为Br(上标 3+)；(2)溴甲烷质谱中存在母体离子的脱氢产物CHBr和CHBr(上标 2+)，而对于碘甲烷，没有检测到这些通道，C-I键首先断开；(3)质谱中存在H^79Br和H^81Br，而碘甲烷的电离解离中不存在HI产物；(4)溴甲烷库仑两体爆炸的有效电荷间距随着两碎片电荷乘积的增大而增大，而对于碘甲烷此间距几乎不随电荷乘积变化；(5)CH(m=0， 1， 2)的主要生成通道可能与碘甲烷不同，不是来自CH3的顺序脱氢，而是来自脱氢母体离子的直接解离。

From analysis of electronic structures and distributions of spin densities in N-doped ZnO, we find that the delocalized wavefunctions of defect states are the origin of incomplete ionization.

通过分析电子结构和自旋密度在空间上的分布，我们发现非局域的缺陷态波函数是上述现象的物理根源。

Molecular laser follows in ArF (193 Nm) and laser of solid of Nd ∶ YAG (213 Nm) differs two kinds the laser of wavelengh denudes in the system, factor of elemental fractional distillation all compares groovy mode to fall to be close to more at 1, make clear use medium to hold back discharge to be opposite gas collosol beforehand effect of fractional distillation of the element after ionization is able to restrain effectively.

在ArF准分子激光(193 nm)和Nd∶YAG固体激光(213 nm)两种不同波长的激光剥蚀系统中，元素分馏因子均比常规模式下更接近于1，表明采用介质阻挡放电对气溶胶预电离后元素分馏效应得以有效抑制。

Our meridian and collateral therapy apparatus products are based on the traditional Chinese medicine theory and together with microcomputer CPU chip, which will lead human body' meridian and collateral system and conduct drug's effectual component into focus by ionization. User can select different therapies, such as magnetism therapy, sole therapy, water therapy, electric therapy and so on, which possess 68 different impulse frequencies. There are functions of assimilating acupuncture, tuina, drug conducting in this apparatus in apparatus, which can treat sick tissues comprehensive and implement the effect of diminishing inflammation, easing pain, relaxing tendon and activating blood circulation, supporting Zhengqi and exorcizing, recovering energy, enhancing immunity, and eventually curing disease temporary and permanent.

公司开发设计的经络通治疗仪系列产品，应用我国传统中医学理论，采用微电脑CPU芯片为核心，自动输导人体经络系统，将中药有效成分，通过电离作用导入病灶，选择各种疗法，如磁疗、足疗、水疗、电疗，并有68种脉冲频率等多种疗法，同时起到模拟针灸、推拿、药物渗透等作用，对人体病变组织多管齐下、综合治疗，迅速达到消炎、镇痛、舒筋活血、抚正祛邪、恢复肌体功能、增强人体免疫力，达到标本兼治的目的。

As theπ-conjugated length of bridging ligand increases, the energies of HOMOs and LUMOs, stabilities of dimers and the largest absorption strength increase whereas the ionization potentials decrease. According to the inner reorganization energy and density of states, we presume the hole-transporting properties of these dimers are better than the electron-transporting.

随着桥联配体共轭长度的增加，HOMO和LUMO的能量、配合物的稳定性以及最大阵子强度增大，然而电离势降低；从重组能和态密度的角度来看，我们认为这些分子的空穴传输性能优于电子传输性能。

Based on the experimental data of low (less than 13) ionization energy of lighter elements, the function of shielding coefficient, electronic states and atomic number is summarized when the atom ionizes electron in different electronic state of the second and first shell.

依据较轻元素原子低次（小于13）电离能实验数据，总结出原子电离第2、1壳层不同电子态电子时，相应的屏蔽系数与电子态及原子序数的函数关系，根据该函数关系，可求出相应原子的高次电离电子的屏蔽系数。

Objective To study the feasibility of bacteria drug resistance determinated by matrix-assisted laxer desorption ionization time-of-flight mass spectrometry(MALDI-TOF-MS).

目的研究基质辅助激光解吸电离飞行时间质谱(MALDI-TOF-MS)用于检测鉴定细菌耐药性的可行性。

World War II: Battle of Saipan - Americans take Saipan.

1944年的今天，美国在塞班战役中拿下塞班岛。

When the scorner, the rejecter of truth, has become presumptuous; when the routine of work in the various money-making lines is carried on without regard to principle; when the student is eagerly seeking knowledge of everything but his Bible, Christ comes as a thief.{DA 635.3

当讥诮和拒绝真理的人，到了任意妄为时，当追求财利者罔顾按道义经营谋利时，当学人正在兢兢业业地研究各种知识，而单把圣经丢在一边时，基督要像贼一样来临。