酐

Among the six polyetherimdes, ODPA-IPDA with the largest free-volume and larger intrasegmental mobility has the highest permeability and the lowest permselectivity, ODPA-DABP with the smallest free- volume and the smallest intrasegmental mobility has the lowest permeability and the lowest permselectivity, ODPA-DMMDA with the larger free-volume and smaller intrasegmental mobility has higher permeability and higher permselectivity.

二苯醚四酸二酐（ODPA－4.4＇－二J氨基二苯异丙烷具有很大的自由体积和较小的链段活动性、很大的透气性和较小的透气选择性，ODPA—4，4'－二氨基二苯酮具有很小的自由体积和较小的链段活动性、很小的透气性和较大的透气选择性，ODPA—3，3'－二甲基二苯甲烷二胶具有较大的自由体积和较小的链段活动性、很大的透气性和很大的透气选择性。

The nonionic surfactant is selected from the group consisting of a polymeric ether, a mixture of laurate esters of sorbitol and sorbital anhydrides condensed with ethylene oxide; and mixtures thereof.

所述非离子型表面活性剂选自聚合醚；与环氧乙烷缩合的山梨醇月桂基酯和山梨醇酐的混合物；它们的混合物。

The results indicate that different molecular weight of dextran could be obtained by direct fermentation,and the acid hydrolyzing in the old technology be avoided.The yield reached the maximum by controlling the pH value to be 8.0,and the inorganic salt could promote the growth of the Leuconostoc mesenteriodes with the effect of promotion being Mn2++Ca2+＞Mn2+＞Ca2+.

结果表明：通过定向发酵技术可得到符合要求的不同分子量的右旋糖酐，避免了老工艺中酸水解工艺；控制发酵培养基pH值为8.0，可使产率最大；无机盐离子Mn2+和Ca2+能促进L.M菌的生长，其促进菌生长的程度大小依次为：Mn2++Ca2+＞Mn2+＞Ca2+。

The result fights allergic experiment to show, dispel the wind stops land of can different level restrains urticant Ding allergy of akin and passive skin mixes the bandicoot that antiserum causes 2, the sex of small rat late hair of chloric benzene be caused by exceeds 2 nitro- of 4- quick the thymus index that reaction; still can increase small rat when dosage greatly and lienal index; stop urticant experiment shows, dispel the wind stops urticant Ding can reduce the time of fit of small rat itching with dextrose lead anhydride and itching duration apparently, can increase Guinea pig to be able to bear or endure those who suffer phosphoric acid histamine send urticant threshold.

结果抗过敏试验显示，祛风止痒酊能不同程度地抑制抗血清诱发的大鼠同种被动皮肤过敏和2，4-二硝基氯苯所致的小鼠迟发性超敏反应；大剂量时还可增加小鼠的胸腺指数及脾指数；止痒试验显示，祛风止痒酊能明显降低右旋糖酐诱导的小鼠搔痒发作次数及搔痒持续时间，并能增加豚鼠耐受磷酸组胺的致痒阈。

All patients with lupus nephritis, who were treated in yancheng first people's hospital from Jan. 2004 to Jun. 2005, were included in this study. They all presented with macrographic hematuria.

2004年1月至2005年6月间在盐城市第一人民医院肾脏科住院的狼疮性肾炎患者，所有患者均有明显血尿、尿蛋白＞2.0 g/d，肾功能异常，血肌酐278.39±80.73/μmol。

The catalyst prepared by impregnation has good catalytic performance of maleic anhydride hydrogenation to succinic anhydride.

采用浸渍法制备的催化剂，具有较好的顺酐加氢制备琥珀酸酐活性。

Results: margaric hydrolysate and zinc could improve the microcirculation and significantly increace the cross points in conjunctiva capillaries of rabbit eyes,preventing the microcirculatory obstruction induced by macromolecular dextrosan or amniotic fluid.

结果：珍珠层粉水解液和锌能疏通微循环，增加兔眼球结膜的毛细血管交叉点数，改善注射高分子右旋糖酐或注射羊水所致的兔眼球结膜微循环障碍和阻止微循环障碍的形成。

A process approaching 3 and 4 chlorophthalic anhydride in high purity via chloriation of o xylene , oxidation of monochloro o xylene by air in gas phase,and separation of 3 and 4 chlorophthalic anhydride afterwards by distillation is described.

介绍由邻二甲苯氯代，再经空气氧化及异构体分离合成氯代苯酐中试规模的合成路线。

Monochloroacetic acid is a rather important chemical raw material and organic intermediate product, which is mainly manufactured by chloride of acetic acid using sulfur and anhydride acetic acid as catalyst.

氯乙酸是一种及其重要的化工原料和有机中间体，目前氯乙酸主要以硫磺或醋酐为催化剂进行乙酸氯化生产而得。

A series of newl naphthalenic sulfonated polyimides were synthesized using 1,4,5,8-naphthalenetetracarboxylic dianhydride, 2,2'-benzidinedisulfonic acid by one-step high temperature polymerization method. The sulfonated degree of SPI-X membranes was controlled through adjusting the molar ratio of BDSA to the non-sulfonated diamines.

采用1，4，5，8-萘四酸二酐、2，2′-联苯二胺双磺酸和APBA为单体，通过高温一步聚合法合成了含有噁唑环的新型磺化聚酰亚胺，通过调节二胺单体的比例控制磺化程度。

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。