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Methanimidamide monoacetate was synthesized by hydrogenation of cyanamide over Pd-In/C catalyst in the presence of acetate acid.

采用以活性炭为载体负载Pd、In制备的催化剂，在醋酸存在条件下，将氰胺加氢合成醋酸甲脒。

The apparent binding constant and the free energy changes were obtained by analysis of fluorescence data of the cyanine dye in the absence and presence of HSA and BSA.

分析噻菁染料的荧光强度随溶液中血清蛋白浓度的变化得到了二者反应的表观结合常数和自由能变化。

Observe for indications of hypoxemia, which include the presence of cyanosis, restlessness, altered respiratory patterns, and tachycardia.

观察是否出现低氧血症迹象，包括发绀、不安、呼吸形态改变及心动过速。

The degree of cyanosis is related to the presence of other defects that allow blood to mix, including a patent ductus arteriosus - a fetal connection between the aorta and the pulmonary artery present in the newborn, which usually closes in the first few days after birth.

紫绀的程度取决于伴随的可以使血液混合的其它心脏畸形，包括动脉导管未闭－新生儿存在的在胎儿期主动脉和肺动脉之间的连接，一般在生后头几天里闭合。

The present invention relates to the depolymering cyclization reaction of aromatic dithio ether polymer to prepare aromatic cyclic dithio ether compound under the presence of mercapto group containing compound and alkali matter.

本发明涉及利用芳香双硫醚聚合物的解聚成环反应来制备芳香双硫醚环状化合物的方法。该方法采用芳香双硫醚聚合物在含巯基的化合物和碱性物质存在的条件下发生解聚成环反应生成双硫醚环状化合物。

Finally, reacting II with PhNCO givethe compound 1-(6-nitrobenzimidazol-l-acetyl)-4-phenylsemicarbazide,III in the presence of〓 give the new cyclic compound 2-phenylamino-5-(6-nitrobenzimidazol- 1-methylene)-l,3,4-oxadiazole.

第三部分：以6-硝基苯并咪唑-1-乙酰肼为原料，分别与取代苯甲醛、苯乙酮及乙酰基二茂铁进行缩合反应，合成了10个新的6-硝基苯并咪唑-1-乙酰腙衍生物。

The presence of AM changes the cyclization reaction mechanism of copolymers from free radical to ionic.

结果表明，AM的引入改变了聚合物的环化机理，从自由基环化机理过渡为离子环化机理。

The influence of reaction time,dosage of catalyst and molar ratio of cyclohexanol/acid were investigated in the presence of copper sulfate used as catalyst.

在较优催化剂CuSO4.5H2O催化下，考察了反应时间、催化剂用量、醇酸比等因素对酯化率的影响。

Ammoximation of cyclohexanone in the presence of a titanium silicalite (TS 1) catalyst was studied.

摘 要：研究了自制的无机钛硅原料体系TS - 1催化环己酮氨氧化反应，结果表明：钛进入了分子筛的骨架中，构成了TS - 1催化活性中心。

A process for preparing cycloolefin features that in the presence of catalyst slurry containing metal Ru catalyst, water and metallic sulfate, the mononuclear aromatics is partially hydrogenated by hydrogen, and includes a step to control the activity of catalyst.

一种生产环烯烃的方法，该方法是在含有金属钌催化剂、水和金属硫酸盐的催化剂浆液存在下用氢部分加氢单环芳烃进行该方法，其中包括控制催化剂活性的步骤。

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