酸酐

For 24 months, the investigators observed 202 patients with chronic renal insufficiency (serum creatinine 1.5 - 3.9 mg/dL), normal total-body lead burden, and no history of exposure to lead.

在24个月的研究期间，研究人员观察了202位受试者，包括：慢性肾疾患（血清中肌氨酸酐1.5 - 3.9 mg/dL），体内含铅量偏高，以及未曾暴露在铅环境的受试者。

Curing kinetics of epoxy resin and the effects of different compositions on curing reaction were researched by using the differential scanning calorimeters. Relationship between curing temperature and curing converting rate had been studied. Curing conditions for the system were determined. Modified nano-Al2O3/epoxy resin and core shell/epoxy resin composites were prepared by means of blending method. The influence of the composition on the properties was discussed. The thermal and dielectric properties of these composites were investigated using differential scanning calorimetry, Thermogravimetry and dielectric analyzer.

首先，论文通过差示量热扫描仪分析研究了环氧树脂与酸酐固化体系的固化反应动力学及固化工艺；然后，通过共混法和超声分散法制备了一系列纳米氧化铝/环氧树脂及核壳粒子/环氧树脂两相复合材料；进而通过DSC及热重分析仪测试了复合材料的玻璃化温度、热降解温度等热学性能，并采用介电分析仪测试分析了复合材料的介电常数、介电损耗等介电性能，讨论了组成对复合材料的热学性能及介电性能的影响。

Results: Carbonic anhydrase, Na+-K+-AT -Pase, Mg2+--ATPase, 5'-nucleotidase and NADPH oxidase could manifest enzyme activity on endosome membrane in the renal proximal tubules、hepatic cell of rat and human leukocytes.

结果 上述碳酸酐酶，Mg2+-ATP酶，Na+-K+-ATP酶，5'-核苷酸酶及NADPH oxidase分别在大鼠肾脏近曲小管，肝脏及人体白细胞的内吞体膜上都有酶活性存在。

With styrene maleic anhydride copolymer as the protective colloid,the mechanism of the emulsification and micro-encapsulation in the in situ polymerization of melamine formaldehyde resin microcapsules was studied.

以苯乙烯马来酸酐的共聚物树脂作为保护胶体，研究了其对原位聚合法形成蜜胺甲醛树脂微胶囊的乳化和成囊的作用机理。

4Production of chemical products from which narcotics are easily made ephedrine, 3, 4-idene dihydro phenyl -2-acctonc, phenyl acetic acid, 1- phenyl -2-acetone, heliotropin, safrole, isosafrole, acetic oxide

易制毒化学品生产（麻黄素、 3 ， 4-亚基二氧苯基-2-丙酮、苯乙酸、 1-苯基-2-丙酮、胡椒醛、黄樟脑、异黄樟脑、醋酸酐

An improved chemical method for the determination of the molar substitution degree of hydroxyethyl guar gum has been described.

本文用模型小分子一缩二乙二醇的醚键断裂实验证明了可行性，羟乙基瓜尔胶上的羟乙基链段与过量对甲苯磺酸-乙酸酐在130℃下反应14hr，醚键完全断裂生成酯，并在pH=11条件下煮沸1hr使酯完全水解，转变为乙二醇。

By esterification, saponification, doubledecomposition and formulation, liquid rare earth of monoisooctyl phthalate complex heat stabilizer was prepared with phthalic anhydride, isooctyl alcohol, sodium hydrate, rare earth chloride, mixed solvent and other reagents. The optimum conditions are: the temperature of esterfication is 130～140℃,and the reaction time is 1h. The temperature and time of saponification is 60℃ and 10min respectively. The temperature of double decomposition is 60～70℃,and the reaction ti...

摘 要：以邻苯二甲酸酐、异辛醇、氢氧化钠、氯化稀土、混合溶剂、助剂为原料，通过酯化反应、皂化反应、复分解反应以及复配制备了以邻苯二甲酸单异辛酯稀土为主要成分的液态稀土复合热稳定剂，其工艺条件为：酯化反应的温度控制在 130～ 14 0℃，反应时间为 1h ；皂化反应的温度为 6 0℃，反应时间为 5min ；复分解反应的温度在 6 0～ 70℃，反应时间为 1h ；水洗温度控制在 6 0～ 6 5℃；混合溶剂的用量为 5 0 %，稀土含量为 6 0 3%；在复配过程中，采用亚磷酸酯作为辅助热稳定剂，其用量为 5 %～ 7%，PVC中加入 2 %的这种稀土复合热稳定剂，在185℃下，其热稳定时间为 4 5min。

The present paper was to investigate the effects and mechanism of TCAIs on the expression of AQP1 in rat ciliary body non-pigmented epithelium cells.

目的观察局部碳酸酐酶抑制剂对大鼠睫状体非色素上皮细胞水通道蛋白1（AQP1）的影响，探讨其可能的作用机制。

Dibutyl maleate was prepared from maleic anhydrideand n- butyl alcohol in the presence of tungstophosphoric acid or molybdophosphoric acid .

用顺丁烯二酸酐和正丁醇为原料，分别以磷钨酸和磷钼酸为催化剂，合成了顺丁烯二酸二丁酯。

The reaction was investigated in the synthesis of maleate using maleic anhydride and methanol as raw materials and solid acid as catalyst, and it was found that sodium bisulfate catalyzed the reaction more efficiently than that of molecular sieve.

考察了固体酸对顺丁烯二酸酐和甲醇合成马来酸酯的催化作用，结果表明，硫酸氢钠比分子筛的催化效果好。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。