内酰胺
- 与 内酰胺 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Methods 0.5~1.0ml dilated HPAG was injected into perineurium of sciatic nerve.
聚丙烯酰胺水凝胶稀释后,以16号针头注射到兔坐骨神经外膜内及其周围。
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The present paper compared the major storage proteins in starchy endosperm of four autotetraploid rice lines with that of their corresponding diploid rice lines. The content of albumin, globulin, prolamin and glutelin in each sample was determined respectively.
以4份同源四倍体水稻和4份相应的二倍体水稻为研究材料,对其种子内清、球蛋白、醇溶蛋白和谷蛋白的含量进行了测定,利用聚丙烯酰胺凝胶电泳技术分析了其特异性。
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The synthesis of the pentacyclic skeleton of Et-743 and the construction of the five chiral centers thereof.1. The core pentacyclic skeleton of phthalascidin was constructed with L-dopa as the starting material via thirteen steps. First, two basic synthons, the C-1 functionalized tetrahydroisoquinoline compounds 8 and N-protected Z-dopa derivative 9, were prepared from L-dopa. They were coupled via amide bond to form the dipeptide compounds 10, which were the first key intermediates. Then the primary hydroxyl groups were transformed into the corresponding amino aldehydes 11 via Swern oxidation. Followed by the intramolecular Pictet-Spengler cyclization, the pentacyclic compounds 12 were synthesized.
五环骨架的构建及五个正确手性中心的确立:1.1我们以L-多巴为起始原料,经过多步官能团保护和转化合成了基本结构单元8然后和苯丙氨酸衍生物9,通过缩合反应生成酰胺中间体10,经Swern氧化得到醛化合物11,然后再次利用分子内改良的Pictet-Spengler反应一步构建c,d两环,得到五环骨架化合物12,最后,实现了21-位羰基向氰基的转化,得到了C-1位官能化的化合物14,化合物14不但具有和Et-743一致的五环骨架,而且分子中五个手性中心立体构型也与其完全相同:其中,3,位和13,位的手性中心由原料L-多巴带入,而1,位,11,位和21,位手性中心则通过不对称诱导而确立。
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The results obtained by electron microscopic observation show that the supercoiled pUC18 DNA adopts a doughnut-like solenoidal structure with outside diameter about 43.8 nm and inside diameter about 2.0 nm in ammonium acetate-H2O medium.
观察结果显示:在疏水性的甲酰胺-水展开系统中,DNA采取通常的互缠式结构;在含有1.5 mmol/L醋酸铵的水介质中制备的超螺旋DNA标本,DNA采取线圈型结构,测得pUC18 DNA分子这种结构的外直径约为43.8 nm,内直径约为2 nm。
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Sphingomyelin is a kind of lipid, residing in the nature food and having latent function of inhibiting cancer. Sphingomyelin is metabolismed to ceramide and sphingosiine in the colon.
鞘磷脂是存在于天然食物中的一种具有潜在抑癌作用的脂类,在结肠内被代谢为神经酰胺和鞘氨醇。
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In the first part, we have used hydrogen bonding-mediated rigidified aromatic oligoamide backbones to construct a new molecular tweezer which is appended with two zinc porphyrin moieties.
在第一部分工作中,我们通过分子内氢键驱动的刚性寡聚芳香酰胺骨架构建了一种新型的锌卟啉分子镊。
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Started from D-tyrosine, we obtained the tetramic acid 96 using Jouin reaction. The assembly of the second fragment 109 was stared from 1,4-butandiol,using asymmetric alkylation reaction developed by Oppolzer as a key step. Coupling of the tetramic acid 96 with 109 provided the key intermediate 110 according to Yoshii\'s procedure. After remove protective group and Sharpless epoxidation, we obtained the key intermediate 113. Its macrocyclization to form the final product is in progress.
本论文的第二章主要对Macrocidin A开展了合成工作,我们从D构型的酪氨酸出发,经过官能团转换;利用Jouin反应生成Tetramic acid 96,另外一个片断从1,4-丁二醇开始经过多步反应生成碘化物104,利用Oppolzer发展的手性樟脑磺酰胺为辅基参与的不对称烷基化反应,引入手性甲基,生成关键中间体109,接着通过Yoshii发展的方法连接96和109生成110,经过Sharpless不对称环氧化反应建立环氧化合物,然后脱去保护基得到关环前体113,分子内的Mitsunobu反应进行关大环反应正在进行之中。
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Results 86 cases of polyacrylamide hydrogel were injectable implant in the treatment of non-organic change. 32 cases only because of psychological pressure,and urgent requirement for seeking out hydrogel,Were treated using suction liposuction methods.Induration significantly complicated and tough for using semi Central areolar incision under half,pumping out water gel thoroughly Abstract induration.Hydrogel into pectoralis major,who may armpit transverse incision after augmentation.
结果:86例聚丙烯酰胺水凝胶注射式隆乳术后的就诊者中,对无明显器质性改变,仅因心理压力过大而迫切要求取出水凝胶的32例求术者,采用脂肪抽吸式方法抽吸;对于并发硬结明显大而硬者,采用乳晕下1/2半环切开,抽吸水凝胶彻底摘出硬结;水凝胶注入胸大肌内、后间隙者可采用腋下横切口,分离胸大肌将乳腺后间隙水凝胶向胸大肌下间隙挤出抽吸到清亮液体后,同期放入假体于胸大肌后间隙。
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With the aid of the methyl acrylamide as an internal standard, acrylamide was derivatized through bromination and determined by GCIMS.
建立了油炸方便面中丙烯酰胺的气相色谱-质谱联用内标分析方法。
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Organic and compound cation garrulous coagulates the agent is to use chemical law compound a kind of new-style cation garrulous coagulates agent, belong to domestic and international initiate, with other and groovy drug photograph comparing has 5 big advantages: The photograph such as aluminium of as aggregate as commonly used drug chloridize, aggregate and vitriolic iron, vitriolic aluminium is compared, coagulate with garrulous of polypropylene acyl amine the agent is used jointly, medical dose is little, reduce useless water treatment to expend about 20 % thereby, 30 %; Effect of processing liquid waste is good, garrulous is round settling speed is fast, make liquid waste can second birth is used, managing water natural resources; Its garrulous group is sedimentary filterability can be good, slime can reclaim inside entire plant, namely energy-saving be helpful for protecting an environment again; Corrode to equipment small; Have muti_function, have agglomeration effect already, again garrulous coagulates action and the action that aid filter, can serve as filter aid.内容来自www.ch-water.com
有机复合阳离子絮凝(使液体中悬浮微粒集聚变大或形成絮团,从而加快粒子聚沉,达到固-液分离的过程)剂是利用化学法合成的一种新型阳离子絮凝(使液体中悬浮微粒集聚变大或形成絮团,从而加快粒子聚沉,达到固-液分离的过程)剂,属国内外首创,与其他常规药剂相比具有五大优点:与常用药剂聚合氯化铝、聚合硫酸铁、硫酸铝等相比,与聚丙烯酰胺类絮凝(使液体中悬浮微粒集聚变大或形成絮团,从而加快粒子聚沉,达到固-液分离的过程)剂联合使用,药剂量少,从而降低废水处理(通过物化方法去除水中一些物质的过程)费约20%—30%;处理废水效果好,絮团沉降速度快,使废水能再生利用,节约水资源;其絮团沉渣过滤性能好,煤泥可全部厂内回收,即节能又有利于保护环境;对设备腐蚀小;具有多功能,既有凝聚作用,又有絮凝(使液体中悬浮微粒集聚变大或形成絮团,从而加快粒子聚沉,达到固-液分离的过程)作用和助滤作用,可作为助滤剂。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。