内酯化

China,calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品、聚乙酸乙烯酯乳液系列产品、电石、冰醋酸、醋酸乙烯、季戊四醇、聚乙烯醇缩丁醛树脂、聚乙烯醇缩丁醛胶片、AVS内外墙涂料、水泥、碳化砖等40多种化工产品和建材产品。

The company,covering 4.2 square km,has eleven branch and subsidiary companies,and 4,737 employees,it mainly produces polyvinyl alcohol series,polyvinyl acetate emulsion ( commonly called"bairuijiao"in China),calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

主要有聚乙烯醇系列产品，聚乙酸乙烯酯乳液系列产品，电石，冰醋酸，醋酸乙烯，季戊四醇，聚乙烯醇缩丁醛树脂，聚乙烯醇缩丁醛胶片，AVS内外墙涂料，水泥，碳化砖等40多种化工产品和建材产品。

Methods: We divide the rats into 5 groups in random, with Morris method, detect the change of some active oxygen radicals such as super-oxide demitasse, Nitric Oxide Synthase, malondialdehyde etc. Also, we detect the change of cholinesterase, Monoamine Oxidize; using HE,PAS staining, immuno-histochemical technique, detect hippocampus CA1 cerebral pathology slices optical density value of NOS, CHE and lipofuscin of neural cell; detecting apoptosis rate and the expression of P53 , which are neuronal apoptosis related genes.

大鼠随机分为5组，采用"Morris水迷宫"法观察脑缺血性模型大鼠学习记忆功能，检测超氧化物歧化酶、一氧化氮合酶、丙二醛等自由基代谢异常的改变，检测胆碱酯酶、单胺氧化酶等老化相关酶的变化、脑组织神经细胞免疫组织化学技术、检查海马CA1区脑组织的病理切片，检测NOS、CHE光密度值；流式细胞技术：检测细胞凋亡率，及促细胞凋亡基因、P_(53)蛋白表达；病理切片采用HE染色、PAS染色及免疫组化法检查，检测对大鼠海马神经元细胞一般病理变化及脑细胞内脂褐含量。

P28 紫色 Formation of a peptide bond 肽键形成–4侧链具有的反应–形成二硫键-其它反应 Tyr,His,Arg Review Isoelectric Point Titration滴定 of an amino acid 滴定 Gly幻灯片 18 His Lys Glu Reaction of amino acids Section 4 Protein isolation and purification 蛋白质分离及提纯 Working With Proteins Experimental techniques for protein analysis and characterization Purification steps A cell contains many types of proteins In the lab we want to isolate a single protein for experiments Purification steps We first grow cells or isolate tissues that contain the protein of interest We break open the cells to produce a crude extract Use centrifugation离心 to separate soluble from insoluble material We fractionate 分离 the protein mixture based on properties of such as size, charge affinity or solubility.

丹磺酰氯与氨基酸反应生成荧光性质强和稳定的磺胺衍生物，用于多肽链NH 用于多肽链 3末端氨基酸的标记烃基化反应(1) 2，4-二硝基氟苯2，4-dinitrofluorobenzene，二硝基氟苯(二硝基氟苯 DNFB也叫做试剂。DNFB在弱碱性溶液也叫做Sanger试剂试剂中与氨基酸发生取代反应，生成黄色化合物二硝基二硝基苯基氨基酸(dinitro phenyl amino acid， DNP氨基酸氨基酸)苯基氨基酸氨基酸(2)苯异硫氰酸酯(phenylisothiocyanate， PITC)在弱碱性条件下，与氨基酸反应在弱碱性条件下，生成苯乙内酰硫脲 PTH衍生物，(phenylthiohydantoin， PTH)衍生物，即PTH-氨基酸，此反应又称之Edman反应，该反应是蛋白质或多肽氨基酸序列测定常用的反应。

Enzymatic interesterification of palm stearin and soybean oil was carried out by immobilized lipase Lipozyme TL IM. The reaction curve of batch operation was studied. Results showed that the reaction reached blance in 3 h with 5% lipase at 70℃, temperature of 70~90℃ did no remarkable influence on the reaction rate.

进行了固定化脂肪酶Lipozyme TL IM催化棕榈油硬脂和大豆油酶法酯交换的研究，考察了酶法酯交换分批操作的反应动力学曲线，发现5%的加酶量、70℃下反应，反应3 h内达到平衡，反应温度在70~90℃对反应速度无明显影响。

The descriptions of 300V and 8100 X-lite have only uninformative words about "100% Synthetic - Double Ester Technology" or "100% Synthetic - Ester Based", but how much esters contained in motor oils exactly?

在300V和8100 X-lite的包装说明上有著不太资讯化的字眼有关100%合成油-双酯科技或者100%合成油-酯类基础油，但有多少比例的酯类在这机油内呢？

The level of cAMP in cell depends on adenyl cyclase and phosphodiesterase .

细胞内的环磷酸腺苷的水平取决于腺苷环化酶和磷酸二酯酶。

Then we completed the first total synthesis of-Plakoridine A using Eschenmoser couping reaction as akey step. During the synthesis we found the choice of protecting groups and the configuration of the chiralcenter of the substrate play an important role to the key Eschenmoser reaction,so we think our successwould be of guide for synthesizing other polysubstituted pyrrolidines or piperidines.

在论文的第一章中，我们先以易得的对羟基苯乙酸乙酯为原料经多步反应制得了所需的β氨基酸酯，然后利用立体选择性的Aldol缩合反应和内酰胺化反应制得了Plakoridine Alactam，随后，以Eshenmoser缩合反应为关键步骤完成了生物碱-Plakoridine A的首次不对称全合成。

Methods Explore the optimal concentration of phurbol-12-myristate-acetate and calcium ionophore (A23817) inducing time, and optimal concentration of biotinyl sheep anti mouce IgG (bio-SAM-IgG) and horse radish peroxidasestreptavidin. The CD4(superscript +) cell enriched from peripheral blood mononuclear cells using solid phase anti-CDs monoclonal antibodies were induced by PMA and A23817 under influence of monensin and harvested in vary hours.

从健康人外周血单个核细胞中富集CD4细胞，加入莫能霉素，用不同浓度的佛波醇酯和钙离子载体(A23817)诱导CD4细胞不同时间，比较其胞内表达白细胞介素－2(IL-2)/白细胞介素－4(IL-4)的细胞百分率，确定最适诱生条件；用不同稀释度的IL-2McAb、IL-4McAb、不同浓度的生物素化羊抗鼠IgG(bio-SAM IgG)和辣根过氧化物酶标记的链霉亲和素作棋盘配比试验，确认McAb、bio-SAM IgG和HRP-SA的最适浓度，根据上述结果建立了检测细胞内细胞因子的BSA-ICC法。

Open the valve of water jet pipe in Reaction kettle 2 to wash the oil together with spraying the water and mix slowly.

打开2号酯化釜内的喷淋水管阀门，在慢速搅拌的同时进行再次洗油，洗油过程中可以适当加温。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！