丁
- 与 丁 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The analysis methods for the determination of microor trace elements in high moisture jellyfish were developed. The fatty acid compositions indifderent parts of fresh jellyfish were determined by GC/MS method. Thirty-five fatty acids wereidentified, and most of them were found in R. esculentum jellyfish for the first time. Especially,two unusual very long chain polyunsaturated fatty acids that were never detected in the otherjellyfish also were determined. Amino acids were abundant in R. esculentum jellyfish, especiallycontaining sulfur amino acids, and could be supplied for human diet. The polysaccharide inumbrella part of jellyfish was composed of glucose, galactose and uronic acid, and its molecularweight was 40,000, but the polysaccharide of the oral arms part consisted of glucose, mannose andglycuronic acid, and its molecular weight was 43,000. Above-mentioned data were never reported.The ethanolic extract of oral arms part of jellyfish were extracted by different polar solvents(petroleum ether, acetic ether, n-butanol), and antibacterial activity was tested to these extracts byfour species of terricolous pathogenic bacilli and three species of botanic pathogenic fungi. Theresult demonstrated that the petroleum ether extract had certain bactericidal activity for twospecies of pathogenic bacilli, and n-butanol extract had certain inhibited activity on apple rotpathogenic fungus.
建立了高含水量的海蜇产品中微量、痕量元素成分测定的分析方法;采用 GC/MS 方法测定了新鲜海蜇不同部位的脂肪酸组成,共鉴定出 35 种脂肪酸,其中大多数脂肪酸是首次在海蜇中被检测到,尤其是两种不常见的 C24:5 超长链多不饱和脂肪酸的分析和鉴定在其它水母种属中也从未见报道;海蜇三个部位中氨基酸成分齐全,含量丰富,含硫氨基酸含量较高,可与其它食物蛋白质的氨基酸互补;其中海蜇皮多糖是由葡萄糖、半乳糖和糖醛酸组成,分子量为 40,000,海蜇头多糖是由葡萄糖、甘露糖和糖醛酸组成,分子量为 43,000,以上工作均未见报道;利用石油醚、乙酸乙酯、正丁醇三种不同极性溶剂分别萃取海蜇头乙醇浸提物,用纸碟法和生长速率法分别对四株陆源病原菌和三株植物病原真菌进行了抑菌实验,结果表明海蜇头石油醚提取物和正丁醇提取物具有一定的抑菌活性。
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Using piezoelectricity, thermoelectric couple and scanning electron microscope, the pressure peak, temperature rise and components variation of hydroyl-terminated polybutadiene solid propellant processed with high-pressure waterjet are measured experimentally. Ignition modes of HTPB solid propellant processed with high-pressure waterjet are theoretically analyzed.
利用压电传感器、热电偶和扫描电镜测量了丁羟固体推进剂在高压水射流作用下的压力峰值、温度和组分变化,分析了丁羟固体推进剂在高压水射流作用下的点火模式。
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By the mechanism of the electrocyclic reaction, three groups of 4-hydroxy-2-cyclobutenones 4 were designed and synthesized to investigate their behaviors underthe thermolysis conditions Meanwhile, a new procedure for preparation of 2(5H)-furanone 5 Was discovered.
根据电环化反应机理,我们设计了三组不同类型的4-羟基-2-环丁烯酮(4)。通过对4-羟基-2-环丁烯酮(4)进行热解,发现了一种制备2(5H)-呋喃酮类化合物(5)的新方法。
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However, MeJA treatment decreased DIMBOA and p-Hydroxybenzoic acid content of the third leaf significantly, while root DIMBOA content was increased significantly.
2MeSA处理叶片能诱导叶片中AOC基因、β-1,3葡聚糖酶基因(PR2a)基因及根中BX9基因的表达,使第三叶丁布含量降低,根中丁布含量升高,第三叶对羟基苯甲酸含量显著降低,6μL/L的MeSA处理则使根中香草酸含量升高。
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You said you were gonna wear a thong.
你说你要穿丁字裤的,丁字裤呢?
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The ramification is a kind of fine chemical product with higher added value which is used to solvent, medicine, toiletry, pesticide, engineering plastic and so on.
项目内容:1,4-丁二醇是一种重要的基本有机化工和精细化工原料,其用途广泛,它的衍生物更是附加值高的精细化工产品,广泛用作溶剂、医药、化妆品、农药、工程塑料等。1,4-丁二醇为市场短缺产品,现有生产能力远远不能满足国内市场需求。
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Methods Seven probe drugs were incubated with or without methyl protodioscin respectively in human microsomes. The specific substrates used in this study were caffeine (CYP1A2), dextromethorphan (CYP2D6), tolbutamide (CYP2C9),-mephenytoin (CYP2C19), chlorzoxazone (CYP2E1), coumarin (CYP2A6) and midazolam (CYP3A4). The concentrations of the substrate metabolites (paraxanthine, dextrorphan, 4-hydroxytolbutamide, 4-hydroxymephenytoin, 6-hydroxychlor-zoxazone, 7-hydroxycoumarin and 1-hydroxymidazolam) were determined by HPLC and LC-MS/MS. Results MPD 1-10 μmolL^(-1 had no significant inhibition on the activities of the seven cytochrome P450 enzymes.
将MPD和CYP450酶7种亚型的特异性探针底物咖啡因(CYP1A2)、右美沙芬(CYP2D6)、甲苯磺丁脲(CYP2C9)、s-美芬妥因(CYP2C19)、氯唑沙宗(CYP2E1)、香豆素(CYP2A6)及咪达唑仑(CYP3A4)与人肝微粒体进行孵化反应,采用HPLC和LC-MS/MS法测定对应的7种代谢产物(1,7-二甲基黄嘌呤、去甲右美沙芬、4-羟基甲苯磺丁脲、4-羟基美芬妥因、6-羟基氯唑沙宗、7-羟基香豆素和1-羟基咪达唑仑)的浓度,通过与对照组比较,确定MPD对以上7种酶活性的影响。
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The mass transter can be enhanced ,when we introduce sulfuric acid and cuprous oxide into this system.The model is formed to describe the transference of the martial between the four phases: gas-liquid-liquid-gas, which can explain some problems. We analyze the dead of the catalyst, and make a conclusion that the surface of the catalyst is covered with some compounds such as bluestone, which lessen the activity points of the catalyst and debase the activity.
在SO_4~(2-)/ZrO_2-La_2O_3催化的反应系统中加入稀硫酸和氧化亚铜促进了异丁烯和一氧化碳的传质、使反应得以快速,高选择性的进行,异丁烯的转化率达95%以上,特戊酸的收率达47%;讨论了g-l-l-s传质过程;对催化剂作了失活分析,催化剂失活的原因是因为反应后的催化剂表面覆盖了一层硫酸盐,使催化剂的活性中心数减少,活性降低。
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The extracting ability of several organic solvents such as ethyl acetate, butyl acetate, glycerol triacetate, iso-amy lacetate, and n-butanol, was compared, and it was found that ethyl acetate was a good kind of organic solvent.
比较了几种不同的有机溶剂:正丁醇、乙酸丁酯、乙酸乙酯、三乙酸甘油酯、乙酸异戊酯等的萃取能力,发现乙酸乙酯是一种理想的提取溶剂。
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Blends of P(3-hydroxylbutyrate-co-4-hydroxylbutyrate) [P(3HB-co-4HB)] plasticized by triethyl citrate, soybean oil and glycerin triacetate have been prepared by a solvent casting film method. The effects of varying the type and content of plasticizer on the properties of the polymer blends have been studied.
采用溶剂成膜法制备了柠檬酸三乙酯、大豆油和甘油三乙酸酯增塑的聚(3-羟基丁酸酯-co-4-羟基丁酸酯)共混物,考察了增塑剂的种类及其用量对共混物热学和力学性能的影响。
- 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。