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OBJECTIVE L-arginine is a semiessential dibasic amino acid for humans and animals. This paper aims to investigate the therapeutic effect of L-arginine supplementation on partial-thickness burned patients.

目的 通过观察烧伤后胃肠途径给予L-精氨酸对二度烧伤免疫功能和营养代谢的影响,探讨L-精氨酸对二度烧伤的治疗作用。

Two oleanane type triterpenes were isolated from the crude drug Lu Lu Tong , the fruits of Liquidambar formosana and their structures were elucidated as 2α,3β dihydroxy 23 norolean 4(24), 12(13) dien 28 oic acid(1), 2α,3β,23 trihydroxyolean 12(13) en 28 oic acid(2), based on 13 C NMR, DEPT, 1H NMR, 1H 1H COSY, 13 C 1H COSY, IR, MS and elemental analysis.

从生药路路通分离得到2个齐墩果烷骨架的五环三萜类化合物。通过13CNMR,DEPT,1HNMR,2D1H-13CCOSY,2D1H-1HCOSY,IR,MS和元素分析阐明了它们的结构。(1)为2α,3β-二羟基-23-去甲-齐墩果-4(24),12(13)-二烯-28-羧酸,(2)为2α,3β,23-三羟基齐墩果-12(13)-烯-28-羧酸,(1)未见文献报道,(2)是首次从这一植物中分离得

Based on this result, a new technology is suggested, that is by regulating the effective sulphonating contents of 1-amino-anthraquinone, adjusting the concentration of sulfuric acid to hydrolyze 1-amino-anthraquinone disulfonic acid conversing to 1-amino-anthraquinone -2-sulfonic acid, and briminating the hydrolyzed product in 100% sulfuric acid, 87% yield of Bromamino-acid was achieved, 10% higher than the conventional method prepared by "oleum method".

此新工艺,溴氨酸在产物中含量可达87%,比常规的发烟硫酸法生产溴氨酸提高了10%,质量和收率都接近或达到溶剂法生产的水平。 1,5-二硝基蒽醌和1,8-二硝基蒽醌是生产分散蓝56、分散蓝73等一系列分散染料重要中间体。

Methods: According to the degree of color change, the ozone in the ambient air causes the indigo disulfonic acid sodium discoloration response a new colorless production.

空气中的臭氧使吸收液中蓝色的靛蓝二磺酸钠褪色,生成无色靛红二磺酸钠,根据颜色减弱程度比色定量。

The article adopted the method of orthogonal design using Polyethylene Glycol and Methacrylic Acid to esterify Polythylene-glycol-mono Methacrylate, then using PMA, MAA and Methacrylic Acid Sulfonic Sodium as raw material to synthesize Polycarboxylic type water-reducer.

用正交实验法研究了聚乙二醇和甲基丙烯酸酯化合成聚乙二醇单甲基丙烯酸酯的合成工艺,以该酯化物与MAA和甲基丙烯酸磺酸钠为原料,在引发剂的作用下合成聚羧酸系减水剂。

Attempts in part I of the dissertation were to develop microemulsion systems using medium chain triglyceride, Captex 300, deionized water (H2O), and TPGS as surfactant for the oral delivery of protein drugs or poorly water soluble drugs. Pseudo-ternary phase diagrams were constructed to elucidate the phase behavior of systems composed of medium-chain triglyceride and water with TPGS as main surfactant, polysorbates (Tween 20, Tween 40, Tween 60 and Tween 80) as adjuvant surfactants, and polyethylene glycols (PEG 400 and PEG 600) and polyols (ethanediol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol and glycerin) as cosurfactants.

藉由拟三相图(Pseudo-ternary Phase Diagrams)的建立来了解中链型三酸甘油酯、去离子水及TPGS为主要界面活性剂配合聚醇山梨酯(如Tween 20、Tween 40、Tween 60及Tween 80)为辅助界面活性剂或聚乙二醇(如PEG 400及PEG 600)及多醇类(如乙二醇、1,2-丙二醇、1,3-丙二醇、1,3-丁二醇、1,4-丁二醇及甘油作为共界面活性剂所形成的微乳基剂之相变化。

Two synthetic routes starting from 1,3-dihydroxyacetone and formamidine acetate as well as imidazole-4,5-dicarboxylic acid as starting material were investigated, and the reductive reaction of ethyl imidazole-4-carboxylate was also investigated.

本文对以1,3-二羟基丙酮和醋酸甲脒为原料和以4,5-二羧酸咪唑为原料合成4(5)-羟甲基咪唑的两条工艺进行了研究并优化,同时对4(5)-羧酸咪唑乙酯的还原反应进行了探索性实验。

The present invention discloses a polycarboxylic acid copolymer which is obtained by copolymerization of monomer components comprising a polyalkyleneimine unsaturated monomer (A2) and an unsaturated carboxylic acid monomer, the polyalkylene glycol unsaturated monomer (A2) having an oxyalkylene group bonded to a polyhydric alcohol residue, and the monomer component containing an unsaturated monocarboxylic acid monomer.

公开了一种多元羧酸共聚物,它是通过单体组分共聚制得的,所述单体组分包括聚二醇不饱和单体(A2)和不饱和一元羧酸单体,所述聚二醇不饱和单体(A2)具有使氧化烯基结合到多元醇残基上的结构,所述多元醇残基平均每个分子具有不少于3个羟基。

In this paper, a systematic study on the wetting capacity of sulfate of myristic acid monoethanolamide was made by the canvas sinkking method, through measuring the wetting time of MMS's solution under different concentration, different temperature and different degree of hardwater and comparing with three other surfactants.

对肉豆蔻酸单乙醇酰胺硫酸酯盐的润湿性能进行了系统研究,用帆布沉降法测定了MMS在不同温度、不同质量分数溶液、不同硬水度中的润湿性能,并与其他表面活性剂十二烷基硫酸酯盐、月桂醇醚硫酸酯盐、十二烷基苯磺酸盐进行了比较。

Compounds were identified by means of physic-chemical property and spectral data including three new compounds: platyphyllin A (1), neochlorgeniclatone (2),(2E,6Z)-2,6-dimethyl-8-O-β-D-glucosyl-2,6-octadienoic acid (3). The known compounds included cyclic diarylheptanoids, phenylic acid, ect.

从白桦叶的水提取物中,利用各种色谱分离手段(硅胶柱色谱、聚酰胺柱色谱、凝胶柱色谱及制备薄层色谱等),分离得到28个化合物,通过理化性质及各种波谱数据(NMR,MS,IR,etc)鉴定了23个化合物的结构,其中新化合物三个:platyphyllin A(1),新绿原酸内酯(neochlorgeniclatone,2),(2E,6Z)-2,6-二甲基-8-O--2,6-辛二烯酸(2E,6Z-2,6-dimethyl-8-O-β-D-glucosyl-2,6-octadienoic acid,3。

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