质子的

The titrate analysis experiment carries on under the different initial pH condition; its result indicates the core tertiary amines can be completely protonated at pH.

滴定分析在不同初始pH条件下进行，通过实验表明，在pH的条件下滴定可以保证叔胺的充分质子化。

This nucleus is composed of positively charged protons , and electrically uncharged neutrons .

原子核中包括带正电的质子，和未带电的中子。

Atomic nuclei consist of combinations of protons, or positively-charged particles, and neutrons, or uncharged particles.

原子核是由质子与种子相结合而构成；之子也叫带正电荷的粒子，中子也叫不带电荷的粒子。

We also study the protonation process of the aspartic acid and calculate the concerned thermodynamics data.

我们还对天冬氨酸的质子化过程进行了研究，并计算了相关的热力学数值。

This feature is known to arise from excited-state proton transfer6, 7, 8, yet the atomistic details of the process are still not fully understood.

人们对产生这种生物光的激发态质子转移在原子层面上的详细情况仍然没有完全了解。

The optical nonlinearities, including the nonlinear absorption, the nonlinear refraction and the third-order nonlinear polarizability of 2-(2′-hydroxyphenyl)benzothiazole in cyclohexane, have been investigated using a single-beam Z-scan technique.

以532 nm皮秒脉冲作泵浦光，采用单光束Z-扫描技术对具有激发态分子内质子转移效应的有机分子2-(2′-羟基苯基)苯并噻唑在其双光子吸收区的非线性光学特性进行了详细地研究。

The protic- or Lewis acid catalyzed ring-closure of divinyl ketones (and their acid-labile precursors) pentadienylic cations is known as the via Nazarov cyclization.

质子酸或路易斯酸通过戊二烯基阳离子催化二乙烯酮的环闭合（以及它们的酸不稳定前体）这个反应被称为Nazarov环化。

The results showed that PLA2, and lipid peroxide may be the causes of the changes of proton translocation in endotoxic shock rats.

可能膜脂质过氧化和磷脂酶A2的水解是引起内毒素休克肝线粒体质子转运功能改变的重要因素。

Objective To evalue clinical significance of 1H-MRS in differentical diagnosis and clinical assessment between radiation-induced brain injury and tumor recurrence.

目的 探讨氢质子磁共振波普(1H-MRS)在脑肿瘤放射治疗过程中，对放射性脑损伤和脑肿瘤复发的评估及两者鉴别诊断中的临床意义。

Formylation and diformylation of dithieno [2,3-b:3',2'-d] thiophene were prepared by two methods. Firstly, aromatic carbanions were prepared by 1 Br/Li exchange of bromo dithieno[2,3-b:3',2'-d]thiophene with n-BuLi in THF at low temperature; 2 deprotonation of dithieno[2,3-b:3',2'-d]thiophene with LDA.

二噻吩并[2，3-b：3'，2'-d]噻吩单醛与双醛的制备首先通过两种方法产生芳基负离子：1溴代并三噻吩在四氢呋喃中与正丁基锂发生的溴锂交换；2用LDA对二噻吩并[2，3-b：3'，2'-d]噻吩去质子化作用。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。