质子的

In this dissertation, systematic and extensive conformational search has been performed for asparagine and aspartic acid in gas phase and solution and the properties of the stable conformers are studied using DFT based first-principles calculation. The concerned properties include geometry structure, IR spectra, conformer distributions, intramolecular interactions, ionization energies and electron affinities, protonation and deprotonation processes.

在本论文中，我们对天冬酰胺和天冬氨酸在气相和溶液中的稳定构型进行了系统而全面的寻找，并研究了其稳定构型的几何结构、红外光谱、构型分布、分子内相互作用、电离能、电子亲合能、质子化和去质子化过程等相关性质。

1H NMR spectroscopic analysis of aromatic protons combined with theoretical analysis of molecular structures proved the existence of two rotational isomers at 300 K, as well as a rapid interconversion equilibrium at 330 K for both compounds Ⅰ and Ⅱ. However, only one conformer exists for compound Ⅲ and puerarin containing 7-phenolic hydroxyl instead of propyl in A-ring as the case of compounds Ⅰ and Ⅱ. Based on UV-Visible absorption data of neutral and basic solutions, and on the density function calculations, the 7-phenolic hydroxyl group in A-ring was found to be more acidic than the 4'-phenolic hydroxyl group in B-ring. The mechanism of derivation reaction and the structure-reactivity relationship of puerarin as an antioxidant were further discussed.

其中7-丙基葛根素Ⅱ属于新型取代衍生物；变温1H NMR和理论计算结果表明，在300 K时，葛根素和4'-丙基葛根素以单一构型存在；而7，4'-二丙基葛根素和7-丙基葛根素则存在两种核磁可分辨的旋转异构体，当温度升至330 K时，两种异构体可以相互转化；通过对比分析葛根素及其衍生物脱质子产物的紫外可见吸收光谱并结合理论计算，确定了A环上7位酚羟基比B环上4'位酚羟基先脱去质子，并由此进一步阐明了葛根素衍生化反应机理以及在抗氧化作用中可能的活性位点和结构活性关系。

The calculated results indicate that there are two absolutely opposite regions in the vicinity of 5-FU. In one of the regions, water molecules can assist the tautomerism from 5-FU to its enol form 5-FU(superscript *, whereas in another region, water molecules can protect 5-FU from tautomerizing to 5-FU(superscript *).

研究发现，在5-氟尿嘧啶周围存在两类不同的区域，在其中一类区域中，水分子能促进质子转移的发生；而在另一类区域中，水分子却能阻碍质子转移的发生。

The main works of the author were: designed the experiment of the measurement absorbed dose for proton, as the major participant of experiment, the author took apart in the experiment from tip to toe, finished sample measurement and data analysis.

本文作者的主要工作是：完成质子吸收剂量测量实验的设计、负责并参与质子辐照的全过程以及在辐照后用电子自旋共振谱仪测量样品和对数据进行分析和总结。

From an analysis of the flow of the neutral residual gas in the system the general equation for the rate of accumulation of fast protons is obtained.

通过系统内中性剩余气体流动过程的分析，得到了质子积聚率的基本方程和质子密度作指数增长的条件。

Not only the hydrogen atom of hydroxyl but also the hydrogen atom of the methyl group can transfer to the N atom of heterocycle.

不但甲醇分子羟基上的H可以作为供体质子，而且甲基上的H也可以作为供体质子而转移到芳香环的杂原子N上。

A two-proton multiplet at d5.00(2H,m,H-11)and a one-proton doublet doublet at d5.90 could be assigned to an ABC pattern.

一个两质子在d5.00(2H，m，H-11)的多重峰和一个单质子在d5.90 的双峰可以表明该分子是一个ABC的形式。

In this study, we evaluated the efficacyof preanesthetic proton pump inhibitor (PPI; oral rabeprazol)use in patients receiving regular H2-antagonisttherapy for more than 4 wk. Forty-eight patients with assumedcomplete tolerance to H2 antagonists undergoing elective surgerywere recruited and randomly assigned to receive either a preanestheticPPI (rabeprazol 20 mg; n = 24) or H2-antagonist (H2 group; roxatidine75 mg; n = 24) at 9:00 pm on the day before surgery and 2 hbefore the induction of anesthesia.

本次研究，作者评价了长期规则使用氢离子拮抗剂（口服法莫替丁，疗程大于4周）治疗的病人，麻醉前使用质子泵抑制剂（ PPI ；口服雷贝拉唑）的有效性。48位择期手术的病人假设能够完全耐受氢离子拮抗剂，随机分为两组，一组接受 PPI （口服雷贝拉唑20mg ； n ＝24），另一组接受质子泵抑制剂（口服罗沙替丁75mg ； n ＝24），服药时间分别为，术前一天晚上9点和麻醉诱导前2小时。

So, primary proton event can be identified effectively from the hybrid experiment results by use of ANN (with less dependence on interactive model), and a ideal primary proton energy spectrum will be obtained.

因此，ANN方法对模型的依赖性较弱，预计利用这一方法可以有效地分辨出联合实验中的原初质子事例，从而得到一个理想的质子原初谱。

Fig. 4 The time evolution curves of solar wind speed , proton number density, temperature and the ratio of proton thermal pressure to magnetic pressure at Lagrange point L1 obtained from numerical simulation.

图4。 在拉格朗日点L1处，数值模拟得到的太阳风速度，质子数密度，温度和质子热压力与磁压力的比值随时间的演化曲线。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。