氢

As a result of recent world-widediscussions on the possible harmfulness of sulphites, theJoint FAO/WHO Expert Committee on Food Additives has assessed the intake of sulphur dioxide andrelated compounds, suchas calcium, potassium andsodium hydrogen sulphite; calcium, potassium and sodiummetabisulphite; calcium, potassium and sodium sulphite;and sodium thiosulphate.

由於最近全世界关於硫化物的可能的有害，在食品添加剂的联接FAO/WHO专家委员会的讨论估计了二氧化硫入口和相关化合物， suchas钙，钾和钠氢硫化物；钙、钾和钠偏亚硫酸氢盐；钙、钾和亚硫酸钠；并且钠硫代硫酸盐。

Secretion was measured by determining changes in gastric volumes, titratable acidity, acid concentration and total bicarbonate.

用幽门结扎法和灌流法收集胃液，分别测定胃液总量、可滴定H~+量、氢离子浓度和碳酸氢盐的量。

The following plastic wastes, i.e., polyvinylchloride cable waste, polyethylene cable waste, used "Trabant" car bodies (polyester- and phenolic resins) were mixed with old motor oil, industrial waste oil, and chlorobenzene from waste oil refining processes, and subsequently subjected, in autoclaves, totemperatures up to 500oC and pressures of 20 MPa using disposable catalyst system of slurry phase hydrogenation.

下面的塑料废物，比如聚氟乙烯线状废物，聚乙烯线状废物，使用&随体&汽车车身与旧机油、工业废油和氯苯从废油精炼出来，随后在小孔中使用泥浆阶段加氢的一次性相位加氢系统加热到500摄氏度和20M帕的压强。

The ability of bacteria to be genetically transformable.

那些在平面上定向的氢叫做平伏氢。

Pyruvate dehydrogenase kinases (PDKs 1-4) can regulate the activity of mitochondrial pyruvate dehydrogenase complex to catalyse the oxidative decarboxylation of pyruvate, and then to link glycolysis to the tricarboxylic acid cycle and ATP production.

丙酮酸脱氢酶激酶具有能够调节线粒体丙酮酸脱氢酶复合体催化丙酮酸脱羧氧化的活性，并进一步将糖酵解与三羧酸循环以及ATP的生成联系在一起。

Result At 5 and 25 mgkg^(-1), the total respiratory rate had a similar trend with tricarboxylic acid cycle and pentose phosphate pathway, T1, and T2 were higher than the control on the 1st day and then declined three days late but they had a recover on the last day. Embden-Meyer-hot-Parnas pathway had a declined trend forever. The respiratory rate of the total and three pathways were decreased under 125 mgkg^(-1). The enzyme activity of pyrophosphate-dependent phosphofructokinase, glucose-6-phosphate dehydrogenase (G-6-PDH) and malate dehydrogenase were similar to relative respiratory pathway.

测定期内，5mgkg^(-1)土、25mgkg^(-1)土浓度处理使基础呼吸速率和三羧酸循环、磷酸戊糖途径的呼吸速率均表现初期上升随后（第3天）下降但末期有所恢复的趋势，而糖酵解途径的呼吸速率则持续下降在末期小幅回升；125mgkg^(-1)土浓度处理后基础呼吸速率及3条途径呼吸速率均呈下降趋势；磷酸果糖激酶、苹果酸脱氢酶和葡萄糖－6-磷酸脱氢酶(G-6-PDH)活性变化趋势分别与其对应途径呼吸速率变化相似。

Cone calorimeter ; oxygen consumption principle ; decomposition heat ; polymer composites ; alumina trihydrate ; magnesium hydroxide

锥形量热仪；耗氧原理；分解热；聚合物复合材料；氢氧化铝；氢氧化镁

Methods 2-(piperazin-1-yl)-1-(pyrrolidin-1-yl)ethanone (2) was synthesized from pyrrolidine via amidation and substitution, followed by treating with chloroacetyl chloride and triphenylphosphine in a "one pot" manner to give the corresponding phosphonium chloride 3 in a stable and pure form after crystallization from isopropanol.

以四氢吡咯为原料，先与氯乙酰氯成酰胺，再与哌嗪发生取代反应制得中间体［（1-四氢吡咯基）甲基］哌嗪(2)；化合物2与氯乙酰氯和三苯基膦反应，经异丙醇重结晶得到稳定的有机鏻盐(3)；化合物3与3，4，5-三甲氧基苯甲醛发生Wittig反应，再与马来酸成盐得目标化合物马来酸桂哌齐特(1)。

The absorption and transport of umbelliferone, osthole, columbianadin, columbianetin acetate, angelolA and angelolB are passive diffusion as the dominating process in Caco2 cell monolayer model.

为了考察独活中香豆素类化学成分在整体口服实验中能否被吸收和吸收程度，本文首先采用Caco2细胞单层模型［8］研究独活中的主要化学成分伞形花内酯、甲氧基欧芹素、二氢欧山芹素、二氢欧山芹醇乙酯、当归醇A和当归醇B的吸收和转运。6种香豆素类成分的化学结构见图1。

For the metastable Beta and near Beta phase alloys, with the increasing of hydrogen amounts, the flow peak stresses gradually increase; the elongations for fracture go down through minima and then go up to return or surpass the levels for the uncharging alloys.

由于在高温时氢致弱键机构相对说来不再重要，在正应力高的区域富集的倾向亦大为减小，钛合金在高达上万个PPm的含H量时仍具有相当好的塑性，表现出对氢有巨大的容忍力。

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