羟基乙酸

OBJECTIVE: To prepare cytotoxin/poly lacticoglycolic acid nanoparticles, and to study the general property and drug release in vitro.

目的：制备眼镜蛇毒细胞毒素-聚乳酸-羟基乙酸微球，观察其一般性质和体外释药特性。

Acid catalyst and H + catalysis in the acid catalysts were studied for synthesis of methyl glycolate via coupling of methyl formate and trioxane in a microform high-pressure autoclave(120mL).

在微型高压反应釜中(12 0ml)，考察了酸催化三聚甲醛和甲酸甲酯制备羟基乙酸甲酯的偶联反应，并对酸催化剂中H+的作用进行了研究。

Cephalotaxine ester of 2-oxo-6-methylheptanoic acid was treated with lithium diisopropylamide and Me O-(1-methoxyisopropyl)glycolate to give a mixture of homoisoharringtonine and its stereoisomers with 56% yield. The four stereoisomers separated by TLC showed identical mass spectra and almost superimposed IR but with different 1H NMR spectra. The configuration of the 2'-C and 3'-C of the four isomers were postulated based upon their 1H NMR spectra as compared with the 1H NMR spectra of isoharringtonine and its stereoisomers.

2-氧代-6-甲基庚酰基三尖杉碱(3)与0-(1-甲氧基异丙基)羟基乙酸甲酯(4)在强碱性试剂二异丙胺锂存在下，起亲核加成反应，反应中间体5在室温用酸性丙酮水解，得到一种新的三尖杉酯类生物碱一一高异三尖杉酯碱(6c)及其立体异构体(6a、6b、6d)的混合物，产率56%、通过制备薄层层析分得这四个立体异构体，它们的1H NMR和异三尖杉酯碱及其立体异构体的1H NMR类似，推定了它们的绝对构型。

RESULTS: After 3 days of operation, the BMP positive cells were found in the matrix of experimental group I.

将自体成骨样细胞即刻种植在胶原包埋的聚羟基乙酸基质材料上，然后将该复合体或单纯基质材料移植到兔颅骨的一侧全层骨缺损区，作为实验侧或实验侧。

Seven patients aged 4 to 19 years, with myelomeningocele and high-pressure or poorly compliant bladders, were identified as candidates for cystoplasty. Each patient underwent bladder biopsy, and urothelial and muscle cells were grown in culture and seeded on a biodegradable bladder-shaped scaffold made of collagen, or on a composite of collagen and polyglycolic acid. About 7 weeks later, the autologous engineered bladder constructs were used for reconstruction, and implanted either with or without an omental wrap. After implantation, patients underwent serial urodynamics, cystograms, ultrasounds, bladder biopsies, and serum analyses.

年纪从4到19岁的7位脊髓脊膜膨出、罹有高压或者功能不良膀胱、被鉴定需进行膀胱成形术的病患，每一位病患接受膀胱切片，将上皮与肌肉细胞在膀胱形状的生物可分解的胶原支架或胶原聚羟基乙酸支架上加以培养；大约7周过后，形成一可自体移植的工程膀胱，移植时包覆或者未包覆网膜；移植后，病患进行一系列的尿路动力学、膀胱造影术、超音波、膀胱切片和血清分析。

This thesis illustrates polymerization of PGA by using Chloroacetic acid contract-synthesize polymerization with solvent.

本论文主要研究了溶液缩聚法合成聚羟基乙酸的实验方法。

Professional sales companies operating bromide products: sodium bromide, sodium bromide, potassium bromide, potassium bromate, Tetrabromobisphenol A, Deca-BDE, ten PBDEs, DBDPE, hexabromodiphenyl Central dodecane, dibromo neopentyl glycol, neopentyl bromide three alcohols, three bromine phenol, octabromodiphenyl ether, brominated polystyrene, bromide, calcium bromide, dibromo succinic acid, dibromo-D ene glycol, bromide surfactants series: Dodecyl trimethyl ammonium bromide, tetradecyl trimethyl ammonium bromide, cetyltrimethyl ammonium bromide, octadecyl trimethyl ammonium bromide dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, tetrabutyl ammonium bromide wholesale sales: dimethylolpropionic acid, DL-malic acid, isophthalic acid PIA, glycolic acid, adipic acid.

公司专业经营销售溴化物系列产品：溴化钠、溴酸钠、溴化钾、溴酸钾、四溴双酚A、十溴二苯醚、十溴联苯醚、十溴二苯乙烷、六溴环十二烷、二溴新戊二醇、三溴新戊醇、三溴苯酚、八溴醚、溴化聚苯乙烯、溴化铵、溴化钙、二溴丁二酸、二溴丁烯二醇、溴化表面活性剂系列：十二烷基三甲基溴化铵、十四烷基三甲基溴化铵、十六烷基三甲基溴化铵、十八烷基三甲基溴化铵、十二烷基三甲基氯化铵、十四烷基三甲基氯化铵、十六烷基三甲基氯化铵、十八烷基三甲基氯化铵、四丁基溴化铵批发销售：二羟甲基丙酸、DL-苹果酸、间苯二甲酸 PIA、羟基乙酸、己二酸。

BACKGROUND: Poly-lactic glycolic acid is a good material for cell scaffold, but its poor cellular affinity and mechanical strength limit its application.

背景：聚乳酸-羟基乙酸是一种较好的细胞支架材料，但细胞亲和性较差、机械强度不够等缺点又限制了它的应用。

objective to optimize the formulation of methimazole loaded polylactic co glycolic acid microspheres.

目的 优化甲巯咪唑聚乳酸羟基乙酸共聚物微球的处方工艺。

Two solid complexes of terbium with phenylacetic acid(L1) and phenyl-hydroxylacetic acid(L2) were synthesized by solid state reaction at low temperature,and the complexes were characterized by chemical analysis.

以两种不同结构的羧酸苯乙酸和苯基羟基乙酸与氯化铽为原料，采用低温固相反应合成了两种羧酸铽配合物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。