巯基

The pegylated polylactide-poly glycolide nanoparticle, whose surface was co-modified withmaleimide-polyethylene glycol and methoxy-polyethylene glycol, was made by double-emulsion and solvent evaporation method andcovalently conjugated with thiolated lactoferrin via its maleimide functionalgroup.

第一章首先由复乳／溶媒蒸发法制备马来酰亚胺—聚乙二醇(Maleimide-PEG，MAL-PEG)和甲氧基聚乙二醇表面共修饰的聚乳酸-聚羟基乙酸纳米粒，然后通过其表面MAL-PEG与巯基化Lf共价连接而制备Lf-NP_。

2 mercapto 5 methoxybenzimidazole,a key intermediate for the synthesis of omeperazole,was synthesized in 80% yield over two steps.

目的 合成奥美拉唑中间体2 巯基 5 甲氧基 1H 苯并咪唑。

During the process of sepsis, trace dose of leptin injected peritoneally significantly improves and stabilizes the hepatic and renal functions. The mechanisms may be related with those intestinal enzymes associated with metabolism of free radicals, mercapto group and purine. Indomethacin exerts a similar role as leptin though at much higher dose.

在脓毒症过程中，微量leptin体外注射可以发挥改善和稳定肝肾功能的明显作用，其机制可能同其影响肠道多种与自由基、巯基和嘌呤代谢相关酶的功能有关，而且吲哚美辛在一定程度上有类似的效应，但所用剂量明显高于leptin水平。

A series of organic-inorganic hybrid membrane were prepared by introducing mercapto silanes and amino silanes to sulfonated BPPO membranes through in-situ sol-gel.

将巯基硅氧烷和胺基硅氧烷引入到磺化BPPO膜中，通过原位溶胶凝胶法制备有机无机杂化膜。

During preparation, mercapto ethanol isooctanoate, alkyl or ester tin chloride and organic solvent are first heated and refluxed while adding catalyst; organic layer is then obtained through separating liquid and decompression distilled; and through further steps, the compound is obtained. The synthesis process of the present invention is simple, and has conversion rate higher than 95 %, normal pressure and low reaction temperature, low power consumption and less pollution, and the prepared compound has high reaction activity and low toxicity.

制备时，将异辛酸巯基乙醇酯、烷基或酯基氯化锡和有机溶剂加热回流，同时加入催化剂，然后通过分液，保留有机层，再对有机层进行减压蒸等步骤制得所述化合物；本发明合成工艺简单，转化率大于95％，反应在常压条件下，反应温度低，从而降低了能耗，减少了污染，所制备的化合物具有反应活性高和毒性小的特点，使用安全。

Compounds which possess active hydrogen atoms, include those which contain hydroxyl, carboxyl, mercapto, primary and secondary amino groups, carbonamido, sulphonamido, and reactive methylene or imide groups.

化合物具有活性氢原子，包括那些含有羟基，羧基，巯基，小学和中学氨基，carbonamido，sulphonamido，和活性亚甲基亚胺或团体。

Expanded MSCs were induced to differentiate into nerve cells withthree different treatment protocol in the prensent study . On the following day, the medium was replaced with preinduction medium consisting of DMEM, 20% FCS, and 10 ng/ml basic fibroblast growth factor. After 24 h, the preinduction medium was removed, the cells were washed twice with PBS, and neuronal induction medium containing DMEM supplemented with 2% DMSO and200 m bu-tylated hydroxyanisole was added. In later experiments, we used DMEM with 5 mM p - mercaptoethanol or sulfo - glycerine as an alternative neuronal induction medium for the same incubation.

将待诱导分化的MSCs按0.4x10~6／ml接种于事先放置有消毒盖玻片的六孔板内制备细胞爬片，分别采用三种不同的方法诱导第2代至10代的MSCs向神经细胞分化，即方法1先用含bFGF的培养基进行预诱导，之后再用含叔丁基对羟基茴香醚，和二甲亚砜的无血清培养基进行诱导；方法2和方法3用B-巯基乙醇和硫代甘油进行预诱导，然后不同浓度的上述物质进行正式诱导。

Using silicotungstic acid as catalyst with the catalyst supported on active carbon,2-methyl-2-ethyl-acetic-1,3-oxathiolane(targeted compound I,an aroma compound with apple flavor )was synthesized by the reaction of ethyl aceto-acetate and 2-mercapto-ethanol.

以活性炭固载硅钨酸作为催化剂，用乙酰乙酸乙酯与巯基乙醇缩和合成了具有浓郁苹果香气的香料化合物2-甲基-2-乙酸乙酯基-1，3-氧硫杂环戊烷。

The composition and structure of Soybean Protein Isolate are first introduced,Then the functional modification of SPI via chemical ways which include the reaction of amino group,carboxyl group and sulphydryl group,via enzymic ways which include the modification using transglutaminase enzyme and papain,via physical ways which include blending and heat treatment are reviewed.

首先介绍了大豆分离蛋白的基本组成与结构，然后分别从化学改性、酶改性和物理改性三个方面对大豆分离蛋白改性进行了综述。其中，在化学改性方面，针对大豆分离蛋白中含有的氨基、羧基、巯基等不同活性基团的改性原理及研究现状进行了介绍。在酶改性方面，主要介绍了谷胺酰胺转胺酶、木瓜蛋白酶等对大豆分离蛋白的改性作用。在物理改性方面，介绍了共混、加热改性等目前研究较多的方法。

Results indicate that the two types of tetrazole derivative inhibitors have good corrosion inhibition ability for copper in NaHCO3 solution, and they are both anode-type inhibitors.

合成了胍基四唑和1-苯基－5-巯基－1， 2， 3， 4-四氮唑2种缓蚀剂，用失重法和电化学法研究了2种缓蚀剂在5% NaHCO3碱性介质中对铜的缓蚀性能和吸附行为。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。