质子

Theoretical studies on various geometrical structures of Hypophosphorous acid were carried out using DFT theoretical methods, at the B3LYP/6-311 ++ G(superscript **) level. Intramolecular proton transfer isomerization has also been studied using the intrinsic reaction coordinate.

采用量子化学密度泛函B3LYP方法，在6-311++G基组水平上全优化得到了硫代次磷酸的硫酮式和硫醇式两种构型异构体以及相应的对映异构体，同时对分子内质子转移异构化反应微观机理进行了理论分析。

Keywords hypophosphorous acid;thiol isomer thione isomers;enantiomer;proton transfer;isomerization reaction

单硫代次膦酸；硫酮式异构体；硫醇式异构体；对映异构体；质子转移异构化

It solves the problem of water soluble iminazole and other low molecular easy runs off slowly following water vapor in sulfonated polymeric compound or iminazole composite film, can be used for moderate temperature proton exchange film fuel cell.

采用齐聚物取代咪唑等小分子，可解决磺化聚合物/咪唑复合膜中水溶性的咪唑等小分子易随水汽慢性流失的问题，可应用于中温质子交换膜燃料电池。

Intragastric pH monitoring were conducted 4 hours before operation and continued for 72 hours in all of these patients.

目的：探讨抑酸剂质子泵抑制剂和H2受体拮抗剂对颅脑围手术期患者胃酸分泌的影响。

Intrasellar malignant lymphoma developing within pituitary adenoma.

氢质子磁共振波谱在颅内肿瘤诊断中的应用。

It occurred with poor regioselectivity leading to a mixture of 3-chloro-2,6-difluoro-4-iodopyridine (14; 77%) and 3-chloro-2,6-difluoro-5-iodopyridine (15; 15%) after iodination.

It利达介导的去质子不佳导致混合区域选择性发生在3 -氯-2，6 -二氟- 4 - iodopyridine（14，77％）和3氯- 2 ，6 -二氟- 5 - iodopyridine（15； 15％）后，碘化。

The results show that in addition to the total ioni...

根据模拟结果分析发现：在空间环境研究中，除了电离能损引起的总剂量外，由质子的非电离能损引起的位移损伤的影响不可忽略。

Although most workers have found that samples containing ionizable components usually are best separated with mobile phases that have a pH less than or equal to 3 , some separations may be impossible at a low pH because components of the sample are unstable at a low pH; protonated basic compounds are eluted too soon; and required band spacings are unobtainable.

尽管许多工作者发现含有离子化组分的样品在流动相pH值低于或等于3的时候有最佳的分离，但许多样品不可能在低pH下分离，因为样品中组分在低PH下不稳定、质子化的生物碱洗脱太快、和不能达到要求的峰间距。

They are Loma Linda University Medical Center in southern, California, and the Northeast Proton Center at Massachusetts General Hospital in Boston.

他们是美国罗马琳达大学医学中心的南部，加州和美国东北部地区的质子中心，马萨诸塞州总医院在波士顿。。

For two decades before Loma Linda opened the world's first hospital-based proton center in 1990, standard x-ray radiation therapy was one of the standard methods for treating prostate cancer.

二十年前美国罗马琳达开放世界上第一个以医院为基础的质子中心於1990年，标准的X -射线放射治疗是一种标准的方法来治疗前列腺癌。。

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％。