氢

Methods After injecting different doses of cephalosporins(100, 200, 300, 400μg) into vitreous body of rabbits, we studied the active change of retinal enzymes at different time and observed the histological and ultrastuctural changes of retinae.

方法以不同浓度的先锋霉素Ⅵ（100，200，250，300，400μg）行兔眼玻璃体腔内注射，用酶组织化学染色法测定注射后不同时间（1，3，7d）视网膜琥珀酸脱氢酶和乳酸脱氢酶活性的变化，并观察对视网膜组织结构及超微结构的影响。

The finding of the blue-shifted F-He-H... Y (Y=N〓, CO and He) systems, where the proton-donor was incapable of rehybridization, indicated that rehybridization is not a generally application driving force for the blue shift. There were other two novel blue-shifted systems discovered in this study. They were lithium bonding systems and dihydrogen bonding systems. On the basis of state-of-art NBO analyses and potential energy surface analysis, it was demonstrated that Pauli/nuclei repulsions cause the blue shift.

在对蓝移理论的研究中，本文发现了一类质子给予体不能进行重杂化的氢键蓝移体系，说明了&超共轭—重杂化&理论的不完善；而将Pauli／nuclei排斥理论应用到本文新发现的两类蓝移体系——锂键体系和双氢键体系，可以很好的解释它们的蓝移现象，从而更进一步的扩展了这一理论。

They are 2,7-dihydroxy-1,5,6-trimethoxy-9,10-phenanthrene,p-hydroxy phenyl aldehyde, 4-Hydroxybenzyl alcohol, Protocatechuic aldehyde, Gastrodin, 4,4'-Dihydroxydiphenylmethane,4-(4-(hydroxym-ethyl)phenoxymethylphenol,Isorhamnetin-3-O-glucoside,Isorhamnetin-3,7-di-O–glucoside, Imbricatin,2,3-dihydroxy-7-methoxy-9,10-dihydrophenanthropyrone, Cyclopholidone,Cyclopholidonol and β-daucosterol.

分别为：2，7-二羟基-1，5，6-三甲氧基-9，10-二氢菲，对羟基苯甲醛、天麻苷元、原儿茶醛、天麻素、4-（4-羟基-苄基）苯酚、4(4-苯氧基甲基苯酚、异鼠李素-3-O-葡萄糖苷、异鼠李素-3-O-7-O-二葡萄糖苷、Imbricatin、2，7-二羟基-3-甲氧基-9，10-二氢菲吡喃酮、Cyclopholidone、Cyclopholidonol和β-胡萝卜苷。

Finasteride treatment did not produce a reduction in prostatic DHT content indicate that there are more than one isoform of 5α-reductases responsible for the high level of DHT in the gland.

长期应用非那雄胺治疗的前列腺增生患者组织中双氢睾酮含量并没有明显降低，而且不同部位增生组织中双氢睾酮的含量存在差异。

Reforming unit: recycle hydrogen compressor, reforming hydrogen compressor, feedstock furnace, reboiling furnace of deheptane tower

重整单元：循环氢压缩机、重整氢增压机、重整进料加热炉、脱戊烷塔重沸炉

Based on three hypotheses, the single reaction model was used for the calculation of active energies during pyrolyzing of HBs (except OH-π) in coal for the first time, and the values agreed well with those obtained with other methods.

在三条假设的基础上，采用单一反应模型的理论，研究了煤中除OH-π以外的其它氢键热分解的活化能，通过该方法计算的氢键的热解活化能与通过其它途径得到的值接近

This paper discusses the possible evolution styles of G6PDH and 6PGDH enzymes and supplies new data on the evolution of higher plants and their plastids.

讨论了植物葡萄糖－6-磷酸脱氢酶与6-磷酸葡萄糖酸脱氢酶基因可能的进化模式，为高等植物及质体的进化起源提供了新的资料。

Excess 40% potassium hydrate solution was added into the triblock copolymers PMA-b-PS-b-PMA solution in THF.

将制得的三嵌段共聚物PMA-b-PS-b-PMA在四氢呋喃中溶解，加入过量的40%氢氧化钾溶液，在75℃下回流48小时。

A multi-metal alloy catalyst for hydrogenation of acetonitrile to ethylamine was prepared using hydrazine hydrate and potassium borohydride as the co-reductant.

以水合肼和硼氢化钾为共还原剂制备了多元合金催化剂，将其用于乙腈催化加氢反应制乙胺。

Through modifying proportions of potassium nitrate, sulfur, phenolophthalein and potassium hydrate, formula of charcoal-free black powder is optimized by replacing charcoal with reactant of phenolphthalein and potassium hydrate.

以酚酞和氢氧化钾的反应物替代木炭，通过调整硝酸钾、硫磺、酚酞及氢氧化钾的混合比例对无木炭黑火药配方进行优化设计，对比研究了普通黑火药与无木炭黑火药在机械感度、静电火花感度、热分解过程及输出特性等方面的差异。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。