酐

After nucleosides were extracted from urine on phenyl boronic acid affinity chromatography, the analysis was performed on a column (46 mm id×250 mm, 5 μm) at 22 ℃ using a linear gradient elution comprising 25 mmol/L KH2PO4 solution (pH 455) and 60% methanol in water with UV detection at 260 nm.

用该法测定了41例肠癌患者和52例正常人尿中15种核苷的含量(用核苷与肌酐的摩尔比表示，下同)，结果表明肠癌患者中有12种核苷的含量比正常人显著性增高(P 001)。以15种核苷的含量作为参量，结合主成分分析区分正常人和肠癌患者，对癌症病人的识别率达76%(31/41)。

Improvement effect of Margaric Hydrolysate and Zinc on microcirculatory obstruction of the bulbar conjunctiva in rabbit eyes was investigated.

以注射高分子右旋糖酐和羊水所致球结膜的微循环障碍为模型，探讨珍珠层粉水解液和锌对微循环的影响。

Selectivity for γ-butyrolactone can be obtained.

在此反应条件下，顺酐的转化率为100％，γ-丁内酯的选择性为91.9％。

The effects of reaction conditions on the catalytic activity have been examined and a more than 95% yield of γ-butyrolactone obtained. Moreover, the above results are comparable with the catalytic activity of the same catalyst for hydrogenation of maleic anhydride.

结果表明，Cu/ZnO/Al2O3催化剂不但具有良好的顺酐加氢活性，而且在较温和的反应条件下对于1，4-丁二醇脱氢同样具有良好的催化活性，γ-丁内酯的收率可达95%以上。

The selective behavior on the hydrogenation of maleic anhydride to succinic anhydride and γ-butyrolactone has been investigated by RuCl〓/PPh〓 catalytic system.

以RuCl〓／PPh〓为催化剂体系，考察了反应条件对顺酐均相加氢生成琥珀酸酐和γ-丁内酯的选择性影响。

Over 5.4％CuO-10.8％NiO/TiO〓-Al〓O〓 catalyst, about 100％ selectivity to γ-butyrolactone at 100％ conversion of maleic anhydride was obtained at 200-270℃.

如使用5.4％CuO-10.8％NiO/TiO〓-Al〓O〓催化剂，在200-270℃，顺酐完全转化，γ-丁内酯选择性约为100％。

Through repairing the fixed bed calandria reactor during the molten salt leakage test in 2×104 t/a cis-butenedioic anhydride unit in Lanzhou Petroleum and Chemical Corporation,a pack of reasonable,practical and feasible technologic means was found to confirm the leakage points caused by molten salt and to repair it in reactor.

通过对兰州石油化工公司2×104t/a顺酐装置中的固定床列管式反应器熔盐渗漏的返修，摸索出一套实用、合理可行的熔盐渗漏漏点确认以及返修的工艺方法，可为类似反应器的制造提供一定的借鉴。

In group A ,21. 07 %in group B and 8 cases in group C;4. treatment of chronic rejec2tion :after administration of Bailing capsula ,24 h urinary protein of CR in groups A and B was less than that in group C ,andScr also fell.

5 % ，B 组21。 07 %，C 组25 %；(3)白细胞下降：A 组无，B 组12 例，C 组8例；(4)慢性排斥的治疗情况：A、B 组之CR 在使用人工冬虫夏草胶囊后，尿中24 h 蛋白排出量较C 组减少或显著减少，血清肌酐明显回落。

Methods The acute edematous pancreatitis and hemorrhagic necrotizing pancreatitis model of rats were induced by cerulein and dextran-110 and endothelin-1 was administered on AEP rats via intravenous injection. Serum amylase, plasma ET and 6-Keto-PGF1α, pancreas hostologic observation were determined.

应用蛙皮素及高分子右旋糖酐造成大鼠急性水肿性和出血坏死性胰腺炎模型，观察血浆内皮素水平及其它相关指标，同时观察外源性内皮素对水肿性胰腺炎大鼠血清淀粉酶、6-Keto-PGF1α及胰腺组织病理形态等的影响。

Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine、oxalic acid、glycolic acid、monomethyl monopotassium malonate、ethyl cyanoacetate、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

本文设计以邻苯二胺和草酸、羟基乙酸、丙二酸单甲酯、氰基乙酸乙酯、丁二酸单甲酯为原料采用PPA催化和无机酸催化法，合成了4种苯并咪唑-2-羧酸衍生物并进行了表征；培养了2个化合物d、e的晶体并测定和讨论了晶体结构；制备了3种未见报道的苯并咪唑金属配合物，对配合物在羰基化法制醋酐-醋酸反应的催化作用进行了初步试验。

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。