查询词典 ionization potential

The ionization constant of aesculin was determined to be pKa= 6.82 by UV absorption method.

通过吸光光度法测得秦皮甲素的解离常数pKa=6.82。

Jawas also use restraining bolts as part of the recipe for their cobbled-together ionization blasters.

贾哇人也会以他们拼装的离子化雷射枪和限制栓搭配使用。

The hard segments pack firmly and form hard segment domains which bear certain degree of regularity. In polyether polyurethane zwitterionomers,variation of the amount of hydrogen bondings formed between hard and soft segmentswith the degree ionization conforms with the phase separation between the hard andsoft segments observed in wide line study.

特别是聚醚聚氨酯离聚体浓溶液中软段与硬段之间形成的氢键的数量和固体变温方法测得的样品的相分离情况完全一致，表明浓溶液中高分子链段间的相互作用和固体条件下的情况一致，可以通过浓溶液的核磁共振研究来了解链段间的相互作用，研究影响体系相分离的因素。

So, in the present study, we have investigated the photodissociation of these alkyl bromides at their A-band using resonance-enhanced multiphoton ionization scheme, ion velocity map imaging technique, expecting to get a variety of information.

同时，采用单色双光子质量分辨的零动能光谱技术得到了溴乙烷的高分辨的离子振动光谱，并分析了离子振动光谱与解离中间态的关系。

It is found that in both the polar cap and the auroral zone a F1 like peak of ionization appeared at 190km height during the main and recovery phases of the storm; while the normal F2 peak disappeared and great depletions of electron density occurred.

发现在磁暴主相和恢复相初期，极光椭圆和极盖区电离层都在大约 1 90km高度出现类似F1的峰，F2主峰完全消失，F区电子密度大幅度下降。

Successful in-solution digestions of single proteins and complex protein mixtures were achieved in 60 s and then analyzed by reversed phase liquid chromatography-electrospray ionization ion trap-mass spectrometry.

压力循环技术成功在60sec内把单一蛋白质及复杂的蛋白质水解。然后利用反相液相色谱分析。

The calculation results demonstrate detailed the evolutions of pulse energy and the distribution of ionization particle.

实现光场的振幅与位相的控制一直是人们所关心的问题。

The mechanism of this spectral shift lies in the electrical field ionization of excitons.

这种光谱的移动机制依赖于激子的场致离化，这种作用起源于能带模型的应用而非分子激子理论。

Simultaneously, the exports of ionization rate and nonionzed concentration are set up as a powerful tool for studying thoroughly the freeze-out effect. dN〓/dp and dN〓/dn are neglected in the linearized equation system of the iteration methods of Newton and Gummel, due to having lower 15 orders or more than dN〓/dn and dN〓/dp, thus the computing effort is cut down with no effect on precision. A new cut-off technique is adopted to accelerate the convergence speed, about twice reduced for Newton iteration method and six times or so for Gummel iteration method. The approximate formulae of Fermi-Dirac statistics are also put forward with simpler form and higher precision. 3. A term dependent on time is added to the electron and hole current succession equations respectively. It is only this model that conservation of charge in transient analysis and alternating small-signal analysis at low temperature can be kept by. 4. The performance of SE-PISCES is explained by the simulation example of PISCES-2B, diode.

研究了低温半导体器件模拟的数值方法：对载流子浓度进行了新的归一化；编制了不考虑掺杂所引进的内建电场时的电离率计算程序；由于低温杂质电离率随偏压状态而变化，为此编制了每次求解迭代时的电离浓度计算程序，并将其插入到求解迭代程序中；同时，设置了杂质电离率和未电离杂质浓度的出口点，为更深入地研究冻析效应提供了有力工具；在Newton迭代法和Gummel迭代法的线性化方程组中忽略了dN〓/dp、dN〓/dn，是因为它们比dN〓/dn、dN〓/dp低15个数量级以上，这样减小了计算量又不影响模拟精度；对Newton迭代法和Gummel迭代法采取了新的截断技术，提高了收敛速度，Newton法迭代法和两次左右，Gummel法减少六次左右；给出了表达式更简单而精度更高的Fermi-Dirac积分近似计算公式。

Objective:To study a method for cholesterol determination in milk tea by gas chromatography-flame ionization detector.

目的：建立一种应用气相色谱仪-氢火焰离子化检测器测定奶茶饮料中胆固醇含量的快速检测方法。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。