水合氢

A gas chromatographic analysis method was established in the study of the conversion of acrolein to 1,3-propanediol by hydration and hydrogenation.

建立丙烯醛水合加氢制1，3-丙二醇的气相色谱定性定量分析方法。

Structures of Na~+-AD ion-complexes with 1 or 2 H2O molecules were obtained. It was found that H2O can bond with Na~+ in the structure of Na~+-AD to form Na-O van der Waals bond. H2O molecule can also bond with N or O atoms in AD moiety to form H-bonds as N-H…Ow or O…Hw-Ow. The former process takes place more easily. The most stable structures of Na~+-AD ion-complexes with 1 and 2 H2O molecules are W-C7AB and 2W-C7AB, respectively.αB conformer of Na~+-AD can not exist in the presence of 2 H2O molecules.

研究发现水分子可以结合在Na~+-AD络合离子中的Na~+附近形成Na-OW范德华键，也可以与Na~+-AD络合离子骨架结构中电负性较强的N或O原子结合形成N-H…OW或O…HW-OW氢键，相对而言，水分子更容易结合在Na~+-AD络合离子中的Na~+位置，Na~+-AD最稳定的带1个或2个水分子的结构分别为W-C7AB和2W-C7AB，Na~+-AD络合离子的αB构象在2分子水存在的情况下完全消失。

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生产的阀门种类有，闸阀，截止阀，蝶阀，止回阀，球阀，减压阀，调节阀，安全阀，隔膜阀，定位器，疏水阀，旋塞阀，电磁阀，排污阀，气瓶阀，真空阀，切断阀，多用阀，管夹阀，仪表阀底阀，燃气阀，控制阀，浆液阀，浆料阀，平衡阀，针型阀，三通阀，调压阀，排渣阀，排泥阀，呼吸阀，水封阀，卸灰阀，浆渣阀，电站阀门，衬氟阀，放料阀，浮球阀，自控阀，陶瓷阀，插板阀，保温阀，百叶阀，盲板阀，泥浆阀，氢气阀，柱塞阀，吸气阀，换向阀，电动阀门，进气阀，铜阀，电动头，过滤器，塑料阀门-排气阀，液压阀，刀闸阀，瓶阀，气动阀门，比例阀，单向阀，角阀，止水阀，专用阀，特殊阀，进口阀，卫生阀门，美标阀门，玻璃钢阀门，阀门合，锻钢阀门，水力控制阀，不锈钢阀门，耐腐蚀阀门，通风阀门，液位计等，并可根据用户特殊要求冶炼和制造。

The effects of different factors on the laser-induced graft polymerization on the PET surface were analyzed, and the mechanisms were discussed. The factors were: 1 Monomers with smaller molecules resulted in better modification than polymeric monomers. Acrylamide monomer was chosen as hydrophilic modifier finally; 2 Higher concentration of the monomer solution favored the graft reaction; 3 With the increasing laser fluence, the surface hydrophilicity of PET films increased at first, then decreased. More laser pulses led to a more hydrophilic surface; 4 Benzophenone as a photosensitizer hindered the graft polymerization; 5 The homopolymer retardant of ammonium iron sulfate hexahydrate in a proper concentration retarded the formation of homopolymers and promotes the graft copolymerization; 6 The solvent of monomer solution also affected the graft reaction. Different solvents functioned in different ways. Ethanol can promote the graft reaction because of the activity of hydrogen in its structure; 7 pH value of the monomer solution affects the polymerization rate, and a lower pH value was favorable to the graft reaction.

这些影响因素的作用分别为：1小分子单体的表面改性效果好，确定以丙烯酰胺为亲水性改性单体；2较高的单体溶液浓度有利于接枝反应；3激光能量密度增大，薄膜表面亲水性先显著增强，后又减弱；激光脉冲次数越多，改性后表面亲水性越强；4光敏剂BP对PET表面接枝聚合反应有阻碍作用；5适当浓度的均聚物抑制剂六水合硫酸铁铵能减少单体均聚物的生成，促进接枝聚合；6单体溶液的溶剂也影响接枝聚合的反应进程，不同溶剂的影响作用原理不同，含较活泼氢的乙醇能促进接枝反应；7溶液pH值影响单体聚合速率，pH值较低有利于接枝反应。

Experimental data for hydrogen isotope fractionations between albitic, K- feldspar, and rhyolitic melts and water vary systematically with pressure from 0.2 to 2 000 MPa.

对 0.2～ 2 000 MPa条件下钠长石熔体、钾长石熔体以及 0.2～ 150 MPa条件下流纹岩熔体-水体系的氢同位素分馏实验数据进行了等压拟合，发现硅酸盐熔体与水之间的氢同位素分馏存在显著的压力效应。

The synthesis methods of ethyl lactate catalyzed by P-toluene sulfonic acid, cationic exchange resin, ferric chloride hexahydrate, stannous chloride, Aluminium chloride, modified zirconium oxid, ferric-potassium vitriol, ammonium ferric sulfate dodecahydrate, rave earth sulfate, sodium bisulfate monohydrate, complex solid superacid, heteropoly acid, molecular sieve, ionic liquid and lipase etal.

评述了对甲苯磺酸，阳离子交换树脂，六水三氧化铁，氯化亚锡，三氯化铭，改性氧化锆，铁钾矾，十二水合硫酸铁铵，稀土硫酸盐，一水硫酸氢钠，复合固体超强酸，杂多酸，分子筛，离子液体和脂肪酶等催化剂催化合成乳酸乙酯的合成方法。

When the solution was heated to the temperature above the LCST, hydrogen-bonding interactions between the water molecules and the PEGMA segments on the surface of the micelles were destroyed and the multimolecular micelles joined together to form the even larger aggregates driven by the increasing intermicellar hydrophobic interaction.

通过UV-Vis和DLS研究发现，温度升至LCST时，胶束表面的亲水基团与水分子间的氢键作用被破坏，疏水基团相互作用加强，大胶束与大胶束缔合形成更大的聚集体，发生温度响应行为。

We have presented a practical method for the preparation of propargylic alcohols from terminal alkynes and carbonyl compounds promoted by KOH in the presence of 18-crown-6,and subsequent efficient cyclizations of propargylic alcohols with 2-naphthol catalyzed by InCl_3·4H_2O under the solvent-free ball-milling conditions.Ball milling exhibits its superiority over the reported methods in the preparation of propargylic alcohols and naphthopyran derivatives.

采用机械研磨方法进行了连续的两步固相化学反应的研究：首先，在氢氧化钾和18-冠-6的作用下，端基炔和羰基化合物在机械研磨条件下反应可以高效地生成相应的炔醇化合物；其次，在四水合三氯化铟的催化作用下，生成的炔醇化合物和2-萘酚在机械研磨条件下环加成生成相应的萘并吡喃产物。

In a large test tube, dissolve 0.5 g (4.5 mmole) of semicarbazide hydrochloride and 0.5 g of anhydrous sodium acetate (or 0.8 g of sodium acetate trihydrate) in 4 mL of distilled water and 7 mL of ethanol.

在一个大试管中，用4 mL蒸馏水和7 mL乙醇溶解 0.5 g (4.5 mmole)的胺基氢氯酸盐和0.5 g无水醋酸钠(或0.8 g的三水合醋酸钠)。

They are 2,3-epoxynopyl acetate,1-hydroxy-2,3-epoxynopyl acetate and 5-hydroxy-2,3-epoxynopyl acetate.The results suggested that the four-ring of nopyl acetate cleaved firstly in th...

分析结果表明反应主要是四元环开裂，并进一步水合，另外伴有少量双键环氧化的产物，这些环氧化的产物还可进一步在C1和C5处发生叔氢氧化。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。