氨基
- 与 氨基 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Racemic backbones 2-amino-2'-hydroxy-6,6'-dimethyl-l,l'-biphenyl la and 2-amino-2'-hydroxy-4,4',6,6'-tetramethyl-l,1'-biphenyl 1b were synthesized from o-methylaniline and 2,4-dimethylaniline via nitration, diazotation/iodination, Ullmann coupling, selective reduction, diazotation/hydrolysis and hydrogenation.
从邻甲苯胺及2,4-二甲基苯胺出发,经过硝化,重氮化-碘代,偶联,单还原,重氮化-水解及还原反应合成了消旋体骨架2-氨基-2'-羟基-6,6'-二甲基-1,1'-联苯1a和2-氨基-2'-羟基-4,4',6,6'-四甲基-1,1'-联苯1b。
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This project mainly exploratorily studied that polyurethane was produced via condensation reaction between polyhydroxylated compounds and methyl carbamate, which was firstly synthesized by dimethyl carbonate and amines. The process is a green route because it turns away the synthesis and the utilization of toxical isocyanic acid ester.
本项目主要探索性地研究了碳酸二甲酯和胺类化合物反应生成氨基甲酸甲酯,然后氨基甲酸甲酯再和多羟基化合物直接反应得到聚氨酯材料,从而避免了异氰酸酯的合成和使用。
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The experimental results show that this new kind of chitosan derivative has the characters of both chitosan and dithiocarbamate.This compound has much better selectivity and capability for heavy metals.Meanwhile,it is convenient,safe and more jarless in acid solution.All results above show that this chitosan derivative has a good application foreground.
本文合成的二硫代氨基甲酸改性壳聚糖兼具天然高分子壳聚糖与二硫代氨基甲酸基的结构与特性,对重金属离子具有良好的选择性和优异的捕集效果,能同时去除多种重金属离子,而且具有使用方便、毒性小、抗干扰能力强、性能稳定等优点,具有良好的应用前景。
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First, 5-nitro-1 and 4-naphthoquinone are prepared through nitration and oxidization of naphthalene, and then through reduction of nitro into amide, diazotisation of the amide and hydro-lytic action of diazo salt, the juglone is made.
萘经过硝化、氧化生成5-硝基-1,4萘醌,然后硝基还原成氨基、氨基重氮化、重氮盐再水解,最终用新方法制得胡桃醌。
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Three series of donor-acceptorπ-conjugated molecules 1, 2, and 3 have been designed and synthesized with a N, N-dimethylamino, Julolidine group (2,3,6,7-tetrahydro-1H, 5H-pyrido[3, 2, 1-ij]quinolinyl), or N, N-diphenylamino group as the donor moiety, a phenylvinyl or thienylvinyl unit as the bridge, and a bromide or aldehyde group as the acceptor moiety.
本文设计并合成了1、2、3三个系列的D-π-A型化合物(Donor-Acceptorπ-conjugated compounds),在化合物分子中引入久洛尼啶基团(2,3,6,7-tetrahydro-1H,5H-pyrido-[3,2,1-ij]quinolinyl),N,N-二甲基氨基,或N,N-二苯基氨基为供电子基团,以苯乙烯基或噻吩乙烯基为桥链,以溴原子或醛基为吸电子基团。
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A method combining HPLC, a post-column derivation device and a fluorescent detector was used to determine residues of ten carbamate pesticides (aldicarb sulfoxide, aldicarb sulfone, oxamyl, methomyl, 3-hydroxy carbofuran, aldicarb, propaxur, carbofuran, carbaryl and methiocarb) in 68 vegetable and 32 soil samples under four different cultivation systems (traditional kailyard, open field vegetable base, green house and paddy) were collected from a certain city in South Jiangsu.
本研究采用高效液相色谱-柱后衍生-荧光检测法分析了苏南某市4种不同种植方式下(传统菜地、露天蔬菜基地、大棚蔬菜基地和水稻田)68个蔬菜样品和32个土壤样品中10种N-甲基氨基甲酸酯类农药(涕灭威、涕灭威砜、涕灭威亚砜、杀线威、灭多威、残杀威、克百威、3-羟基克百威、甲萘威和灭虫威)的残留量,结果表明在蔬菜中检出的氨基甲酸酯农药残留水平多处于0.2~23μgkg^-1,土壤中为0.1~10μgkg^-1;土壤中3-羟基克百威和灭虫威全部检出,其最高检测浓度分别为10μgkg^-1和1.64μgkg^-1,其他农药仅有少数检出。
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In the second section, with ketone and hydroxylamine hydrochloride as the starting materials, 3-aminopropanol is prepared via three steps including reaction of ketone and hydroxylamine hydrochloride , condensation of ketoxime and acrylonitrile, and hydrogenation cracking of condensation product.
第二是3-氨基丙醇的制备,由酮肟丙烯睛缩合物催化氢化裂解制得:即先以酮、盐酸羟胺为起始原料在碱性条件下合成酮肟,再与丙烯腈反应生成酮肟丙烯腈缩合物后经催化氢化裂解制得3-氨基丙醇。
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The blue crosslinking polymeric dyes were synthesized with use of leucoquinizarin and polyvinylamine prepared from the Hofmann degradation of polyacrylamide. The maximum wave length was 597nm. The effects of temperature, the concentration of amino group, the pH value and the mole ratio of leucoquinizarin to amino group on the yield of red crosslinking polymeric dye were discussed.
以具有不同聚合度和不同胺化度的聚乙烯胺为骨架,以1,4—二羟基蒽醌隐色体为原料合成了蓝色可交联高分子染料,该染料的最大吸收波长为597nm,研究了反应温度、氨基浓度、pH值以及1,4—二羟基蒽醌隐色体与聚乙烯胺中氨基的摩尔比对反应的影响。
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Methods: Serum alcohol and ALT、AST、GGT、ALP、CK、LDH、AMY、LIPA measured before and after beer consuming (4ml/kg) in 17volunteers. Meanwhile, the direct inhibitory effects of beer on the serum enzymes were studied by comparing the serum enzyme activities with or without beer.
利用17名健康志愿者,观察口服啤酒(4ml/kg)前后不同时间血液中酒精浓度及丙氨酸氨基转移酶、天冬氨酸氨基转移酶、γ-谷氨酰转肽酶、碱性磷酸酶、肌酸激酶、乳酸脱氢酶、淀粉酶、脂肪酶活性的变化,同时在体外加入血清中与体内浓度相近的啤酒,以观察啤酒对酶活性的直接影响。
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A series of maleopimaric acid polyester amino resins were made from maleo ̄pimaric acid polyesters crosslinked by etherified melamine formaldehyde resins.
以马来海松酸和线性小分子二醇为原料,合成马来海松酸聚酯多元醇,再用氨基树脂交联,制备马来海松酸聚酯氨基树脂。
- 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。