乙酸基

Solute chitosan into acetic acid, stir them to uniformity cystose , refrigerate and cast form into porosity sponginess wire frame..

将壳多糖经乙酸溶解后，搅拌成均匀泡沫状，冷冻铸型制成海绵状多孔基质网架。

Result:Eight compounds were elucidated as β amyrin palmitate, taraxastery acetate, luteolin 7 O α L rhamanopyranosyl (1→2)β D glucopyranoside,luteolin 7 O β D glucopyranoside, triacontanic acid,β sitosterol, stigmasterol and stigmast 7 en 3β ol.

结果 ：从全草中分离得到 5个化合物，β香树脂醇棕榈酸酯，蒲公英醇乙酸酯，木樨草素 7 O α L 鼠李糖基(1→ 2 )β D 葡萄糖苷，木樨草素 7 O β D 葡萄糖苷，三十碳酸；1个混合物，β谷甾醇、豆甾醇、豆甾 7 烯 3β醇。

Project Background and Conditions: The company started research new chemical products in 1998. After two years of efforts, a series of pharmaceutical intermediate sulfathiazole leave instructions, including : 3- methyl sulfathiazole leave instructions, 2- sulfathiazole leave instructions ethanoic acid, 2- acetyl sulfathiazole leave instructions, 2-thiofuran amino ethane ,2-thiofuran acetic, 3,4,5- tighter nitrobenzene have been successfully developed. 2-thiofuran amino ethane are the precursors raw materials of series antibiotic analgesic.

二、项目建设背景及条件：1998年公司开始研究开发高新精细化工产品，经过两年的努力，已成功研制出噻吩系列医药中间体，包括：3-甲基噻吩、2-噻吩乙酸、2-乙酰噻吩、2-噻吩乙胺、2-噻吩乙醇、3，4，5-三氯硝基苯等。2-噻吩乙胺系列噻吩产品使用于血小板及血栓有关的心脏血管病及消炎镇痛等如氯吡格雷、兴孢噻吩钠、兴孢西丁、噻吩洛酸等十几种新药的前体原料，是国家政策鼓励发展和有自主知识产权的项目。

Turbidimetry was selected as analytical methods for the determination of cysteine in untreated hair and treated hair.

研究头发冷烫试剂巯基乙酸浓度与相应头发表面产生的半胱氨酸量之间的关系。

A series of methyl 2,7,7-trimethyl-5-oxo-4-aryl1,4,5,6,7,8- hexahydroquinoline -3-carboxylate were synthesized by the reaction of aromatic aldehydes,dimedone and methyl acetoacetate using ammonium acetate as catalyst in glycol under microwave irradiation with 82%～98% yields in 4～6 min.

微波辐射下以芳醛、达咪酮、乙酰乙酸甲酯为原料，乙二醇为溶剂，醋酸铵为催化剂合成了一系列2，7，7-三甲基-5-氧代-4-芳基-1，4，5，6，7，8-六氢喹啉-3-羧酸甲酯化合物，反应时间4~6 min，产率82%~98%。

Diagnostic tests include the arterial blood gas, and nitroprusside test for acetoacetate (used qualitatively, not quantitatively, because it always underestimate s the severity of the acidsis).

诊断实验包括动脉血气分析、以及测定乙酰乙酸的硝基实验（因常用于估计酸中毒的严重程度，只作为定性实验而不是定量的）。

Diagnostic tests include the arterial blood gas, and nitroprusside test for acetoacetate (used qualitatively, not quantitatively, because it always underestimates the severity of the acidsis).

诊断实验包括动脉血气分析、以及测定乙酰乙酸的硝基实验（因常用于估计酸中毒的严重程度，只作为定性实验而不是定量的）。

Diagnostic test s include the arterial blood gas, and nitroprusside test for acetoacetate (used qualitatively, not quantitatively, because it always underestimates the severity of the acidsis).

诊断实验包括动脉血气分析、以及测定乙酰乙酸的硝基实验（因常用于估计酸中毒的严重程度，只作为定性实验而不是定量的）。

The catalytic system composed of NHPI and transition metal ion can catalyze effectively ethane into acetic acid,cyclane into dicarboxylic acid,toluene into benzoic acid,alkene into epoxide,alkyne into acetylenic ketone,and amide into imide;NHPI used alone can catalyze adamantane to be carbonylated,hydrogen peroxide prepared by oxidization alcohol;NHPI combined with as...

NHPI与过渡金属离子组成的催化体系能高效地催化乙烷氧化为乙酸、环烷烃氧化为二元羧酸、甲苯氧化为苯甲酸、烯烃氧化为环氧化物、炔烃氧化为炔酮、酰胺氧化为酰亚胺；NHPI单独使用能催化金刚烷发生氧化羰基化反应、催化氧化醇制取过氧化氢；NHPI与有机助催化剂如偶氮二异丁腈、溴化季铵盐、蒽醌和醇等也能催化分子氧氧化反应。

Seven compounds have been isolated from hard coral Acropora pulchra. These compounds are:pentadecoic acid, heptadecyl ester;(2)n-cetanol;(3)batyl alcohol;(4) N- [ 1 --2-hydroxyl--3,7-heptad-ecadienal] -hexadecanamide;(5)1 -0-hexanoyl-glycerol ester;(6)thymine;(7)uracil. Their structures were determined by IR, MS, HNMR, 13CNMR analysis.

从北海佳丽鹿角珊瑚Acropora pulchra乙醇提取液的乙酸乙酯部分分离出七个化合物，经IR、MS、~1HNMR、~(13)CNMR等波谱方法鉴定，其结构分别为：(1)十五酸十七酯，(2)正十六碳醇，(3)鲨肝醇，(4)N-1-羟基甲基-2-羟基—-3，7-十七碳二烯基十六酸酰胺，(5)1-正十六酸甘油酯，(6)胸腺嘧啶，(7)尿嘧啶。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。