氢

Furthermore, some discrepancies in earlier literature have been pointed out and our results may provide guidance for hydrogen-bonding association, in particular for the design and assembly of supramolecular polymers based on carboxylic acid/pyridyl pairs.

指出了早期文献报道的一些不一致甚至矛盾的结果。通过不同系列的对比研究，得出的一些规律性对氢键组装尤其对羧基/吡啶氢键缔合超分子体系设计与构筑具有一定指导意义。

During the ESR study of the effects of oxLDL on the ESR signal intensity of hydroxyl radicals in collagen (2 μg/ml)-activated platelets, we found that incubation of human platelets with collagen produced a typical four-line hydroxyl radical signal and a long-lived g = 2.005 radical detectable by spin trapper 5,5-dimethyl-1 pyrroline N-oxide.

在研究oxLDL降低由collagen 〈2 μg/ml〉刺激血小板产生的氢氧自由基〈OH●〉的ESR讯号强度的同时，我们发现以DMPO当自由基捕捉剂，collagen除了刺激血小板产生一个四线的典型氢氧自由基之外，还产生一个长半衰期 g = 2.005的自由基。

The energy of the complex molecule has been compensated by a hydrogen bond formed by, a proton bonding to a quinolyl nitrogen atom and a nitrate ion.

分子中有一个氢离子与另一个喹啉N原子结合并与硝酸根的氧原子形成氢键，从而使配合物分子在能量上得到补偿。

The influences of three instrumental parameters of ICP-MS spectrometer(radio frequenceypower, nebulization gas flowrate and ion lens voltage)on signal intensity and productivity of a few kinds ofions formed from 15 rare earth elements in the plasma(single element ions RE+,oxide ions REO+,hydroxideions REOH+ and hydride ions REH+)have been investigated.

研究了电感耦合等离子体质谱法的仪器主要参数(射频功率、雾化气流量、离子透镜电压)对15种稀土元素的离子、氧化物离子、氢氧化物离子和氢化物离子信号强度及各多原子离子产率的影响，并对各稀土元素多原子离子产率与各稀土元素性质的关系进行了探讨。

A 2 L tubular photobioreactor was designed, and hydrogen production by Rhodospirillum rubrum uptake hydrogenase deficient mutant in this PBR under artificial illumination condition (including continuous illumination and light/dark cycle condition) and natural day/night cycle was investigated, respectively.

本研究设计了一种2 L分体式管式光合反应器，并研究了深红红螺菌吸氢酶缺失突变株在该反应器中分别利用人工光源和自然光的产氢规律。

Surface-treated aluminum hydroxide and magnesium hydroxide mixture, linear low density polyethylene and polyethylene grafted by maleic anhydride were melt-kneaded and extruded to produce a flame-retardant masterbatch, and then was extruded with polyamide 6(PA6) to yield PA6/SAMH/PE(50/30/20 by mass ratios)ternary composite.

采用表面处理过的氢氧化铝与氢氧化镁混合物（质量比2：1）、线型低密度聚乙烯、马来酸酐接枝聚乙烯共混挤出制成母料，然后与聚酰胺6(PA6)共混挤出即母料法制备了PA6/SAMH/PE三元复合材料。

The preferred organometallic compounds of the present invention are of the formula (R1)m M(PR23)x, where M is a metal selected from the group consisting of manganese, technetium, rhenium, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium iridium and platinum wherein m is 0, 1, 2, 3 or 4; x is 2, 3, 4 or 5 and m+x are 2, 3, 4, 5, 6, 7 or 8, m and x selected according to each metals appropriate valence; each R1 is independently selected from the group consisting of hydrogen, deuterium, N2, H2, D2 and a variety of substituted alkyl groups; each R2 is independently selected from the group consisting of lower alkyl, aryl, arylalkyl, and alkyl-Z, aryl-Z and arylalkyl-Z where Z is selected from the group consisting of oxy, silyl, siloxy, oxysilyl, siloxy, oxysiloxy, silyalkyl, oxysilylalkyl, siloxyalkyl, oxysiloxyalkyl, silylalkoxy, silylalkoxy, siloxyalkoxy and oxysiloxyalkoxy; and wherein when M is cobalt and one group R1 is selected to be N2, then m is 2 and the second group R1 is hydrogen or deuterium.

有机化合物的首选本发明的配方是米(R1代)米×(pr23)、那里是一米的金属挑选出来，第一组由锰、锝、铼、铁、钴、镍、钌、铑、钯、锇、铱铂其中M是0、1、2、3或4； X是2，3， 4或5米×+有2，3，4，5，6，7或8 米和X挑选合适的价按每个金属； R1的是每一组由独立选自氢、氘、氮、氢气、 D2和各种烷基取代群体； R2中的每个组由独立选自烷基低、芳、芳基烷基、烷基的Z、芳基、芳基烷基的Z-那里的ZZ是选自组风、含硅、氧、oxysilyl、硅、oxysiloxy，silyalkyl， oxysilylalkyl，siloxyalkyl，oxysiloxyalkyl，silylalkoxy，silylalkoxy，siloxyalkoxy和oxysiloxyalkoxy；其中，M是当钴一派R1的选择是氮气、然后是2米，第二组R1的氘是氢或者。

Some useful fluorine-containing intermedi-ates were synthesized by the reaction of activated methylenecompounds or silyl enol ether with 2,2-dihydropolyfluoro-alkanoates or 2-hydropolyfluoroalk-2-enoates in the presenceof different bases.

进一步研究表明，在氢化钠的作用下，苯乙腈，苄基苯基甲酮也可以与2-氢多氟-2-烯酸乙酯发生亲核加成反应，苄基苯基甲酮的加成中间体经多聚磷酸环化，得到了间位氟烷基取代的α-萘酚衍生物。

The synthesis of hyperbranched poly based upon 1,2-bis diallyl (methyl silyl ethane (B4) as a core molecule and diallyl silane (AB2) monomer via hydrosilylation addition have been investigated: And the hyperbranched poly were prepared using onestep without core, one-step with core and pseudo-one-step methods.

以四烯丙基硅烷(B4)为核、甲基氢二烯丙基硅烷(AB2)为单体，通过硅氢加成反应，采用无核一步法、核一步法、核多步法合成了超支化聚有机硅破烷。

Electrochemical measurements of the singler A2B7 and A5B19 phase alloy showed that, the activation properties of singler type A2B7 and AsB19 phase composition alloys were the same. The maximum discharge capacity (386.12mAh/g) of A2B7 type phase alloy was slightly higher than the maximum discharge capacity (371.38mAh/g) of A5B19 type phase alloy. The cyclic stability of alloy electrode of both A2B7 and A5B19-type phase alloy were all very well. The capacity retention rate of 100 cyclic was more than 85%.The high-rate discharge (HRD900=85%) of AsB19phase alloy was higher than the high-rate discharge (HRD900=76.6%) of A2B7phase alloy.

对较单一的A2B7与A5B19型物相合金进行电化学测试，结果表明：A2B7型相结构储氢合金的活化次数与A5B19型相结构储氢合金的活化次数基本相同，A2B7型物相合金的最大放电容量(386.12mAh/g)略高于A5B19型物相合金的最大放电容量(371.38mAh/g)。A2B7与A5B19型物相合金电极100个循环容量保持率都在85%以上，且差别不大。A5B19型相结构合金的高倍率放电性能(HRD900=85%)高于A2B7型相结构合金的高倍率放电性能(HRD900=76.6%)。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐