酐

At present the output of maleic anhydride and fumaric acid is 80000 tons per year. It is one of the biggest factories fo maleic anhydride in Asia.

公司目前年产顺酐、富马酸8万吨，是亚洲地区最大的顺酐生产厂家之一。

The experimental results show that the yield of the maleic anhydride is maximum when the molar ra_tio of vanadium pentoxide to molybdenum trioxide is equal to about two and the quantities of vanadium are nearly five times more than those of phosphorus.

实验表明：以氧化铝为载体用于苯氧化制顺酐的五氧化二钒催化剂，当五氧化二钒与三氧化铝的摩尔比为2左右和钒磷比约为5时，顺酐的收率最大，并根据催化剂的半导体电子理论和酸碱理论进行了解释。

ABSTRACT: Objective To study the effect of montmorillonite in promoting diffussion of creatinine from blood vessel to intestine and preventing absorption of creatinine in intestinal perfusate.

目的 研究蒙脱石对血管灌流液中的肌酐向肠道扩散的促进作用和阻止肠灌流液中肌酐的吸收作用。

The main end point was incidence of contrast-induced nephropathy (a 20% decrease in creatinine clearance or a 25% increase in serum creatinine).

主要的结束点为造影剂肾病（肌酐清除率下降20％或者血清肌酐上升25%）的发生率。

Amino to acetyl phenol, in have technology of two kinds of production domestic and internationally, acetic anhydride craft of the United States, acyl changes temperature to have 75 ℃ only, acyl changes mother liquor not apply mechanically, deputy reaction is little, of production thick tasting is kind of white almost, purificatory craft is very simple, activated carbon dosage only 2~3%, the Kun that its product does not have glow material almost in different third alcohol inferior the sealed impurity of amine impurity and minim, settleclear lightness it may not be a bad idea, the product quality that acetic anhydride craft produces is good, but close rate low, cost is high.

对乙酰氨基酚，在国内外有两种生产工艺，美国的醋酐工艺，酰化温度只有75℃，酰化母液不套用，副反应少，生产的粗品几乎是类白色，精制工艺就非常简单，活性炭用量仅2~3%，其产品在异丙醇中几乎无红光物质的醌亚胺杂质及微量的未知杂质，澄明度也好，醋酐工艺生产的产品质量好，但收率低、成本高。

The analysis of 1H NMR showed that the succinyl group was successfully conjugated to the amino group of chitosan molecule, and the degree of substitution of Suc-Chi values increased with increasing succinic anhydride/amino mole ratio or reducing the molecular weight of chitosan.

利用壳聚糖和琥珀酰酐反应合成了N-琥珀酰壳聚糖，1H NMR分析表明通过反应可在壳聚糖的侧氨基引入亲水性的羧基，增加琥珀酰酐／氨基的摩尔投料比或者选择分子质量较小的壳聚糖，有利于提高N-琥珀酰壳聚糖的琥珀酰化度。

Molecular weight dextran sulfate is a very low molecular weight dextran by sulfonation from 1500, this drug is also currently the world's AIDS drug, one of the best.

分子量为3000的右旋糖酐硫酸酯，是通过对极低分子量右旋糖酐1500磺化而成，这种药物也是目前世界上防治爱滋病效果最好的药物之一。

Objective To investigate the effect of hypertonic saline/dextran 70 on delayed resuscitation of burn shock. Methods Eighteen mongrel dogs with 35% TBSA,third-degree burn were used in this study.

目的 从血流动力学、心肌力学及代谢等方面探讨高张氯化钠右旋糖酐液(7.5%氯化钠+6%右旋糖酐70，HSD)在烧伤休克延迟复苏中的作用。

Methods Eighteen mongrel dogs with 35% TBSA,third-degree burn were used in this study.Lactated Ringer's or 7.5% NaCl+6% dextran 70 was given for resuscitation 6h postburn.

目的 从血流动力学、心肌力学及代谢等方面探讨高张氯化钠右旋糖酐液(7.5%氯化钠+6%右旋糖酐70，HSD)在烧伤休克延迟复苏中的作用。

A series of important basic and fine chemical products (such as 1,4-butyl -glycol,γ-butyrolactone, tetrahydrofuran, fumaric acid and tetra-hydride pa)can be produced when maleic anhydride is used as the raw material.

以顺酐为原料还可以生产1，4-丁二醇、γ-丁内酯、四氢呋喃、富马酸和四氢苯酐等一系列重要的基本化学品和精细化学品等。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。