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Water-soluble air drying alkyd resin is formulated by flax oil acid,trimethylol propane,dimethyl isophthalate,benzoic acid,maleic anhydride and trimellitic anhydride.

以亚麻油酸、三羟甲基丙烷、间苯二甲酸、苯甲酸、顺丁烯二酸酐、偏苯三酸酐为原料合成水溶性醇酸树脂,中和后制得的涂料具有干性好、硬度高、耐水性和贮存稳定性优良等特性。

Novel triterpene(12-oleanene-3β, 6α-diol) from C.hypoleucus can induce apoptosis and has inhibition effect on the proliferation in RKO cell line.

粉背南蛇藤中新的三萜齐墩果-12-烯/-3β,6α-二醇能抑制人结肠癌细胞系RKO细胞增殖和诱导凋亡。

Polyethylene glycol, undecylenic acid, dodecylamine, nanoparticles

聚乙二醇,十一烯酸,十二胺,纳米粒子

Objective] The study aimed to screen the fungicides that had evident antibacterial effect against Ustilaginoidea virens and their best mixed ratio.[Method] The U. virens strains were separated from rice panicle that had severe disease in rice field of Yaan, 6 fungicides and validamycin and diniconazole mixed with different ratio were selected to carry out the indoor toxicity test on mycelia growth of U. virens with mycelium dry weight method, and the interaction of mixed fungicides was evaluated according to the method of Wadley.

[目的]筛选出对稻曲病菌抑菌效果显著的杀菌剂及其最佳混配比例,[方法]从雅安稻田发病严重的稻穗上分离出稻曲病菌株,选择6种杀菌剂以及井冈霉素和烯唑醇不同混配比例,用菌丝干重法对稻曲病菌菌丝的生长进行室内毒力测定,并根据Wadley方法评价混剂的相互作用。

In vitro, their effects are also dramatically different from one another with only beta androstenetriol potentiating the cellular response by increasing lymphocyte activation and counteracting hydrocortisone immune-suppressive activity.

在体外,它们的作用也是彼此明显不同的,唯有雄甾烯三醇对淋巴细胞有强有力的细胞应答,并且抵消氢化考地松抑制免疫的活动。

F_D In vitro, their effects are also dramatically different from one another with only beta androstenetriol potentiating the cellular response by increasing lymphocyte activation and counteracting hydrocortisone immune-suppressive activity.

在体外,它们的作用也是彼此明显不同的,唯有雄甾烯三醇对淋巴细胞有强有力的细胞应答,并且抵消氢化考地松抑制免疫的活动。

Such changes in thiols by allyl sulfurs may also account for the observed hyperphosphorylation of specific cell cycle proteins and the histone hyperacetylation that has been correlated with suppressed tumor cell proliferation.

这些烯丙基硫化物引起的硫醇的改变同时也可以使特异性细胞周期蛋白过磷酸化及组蛋白过乙酰化,从而抑制肿瘤细胞增殖。

The synthesis of alkylcyclohexylbenzoic acid: take the synthesis of ethylcyclohexylbenzoic acid as a typical example. With the AlCl3 as the catalyst, cis+trans acetylcyclohexylbenzene is synthesized from the reaction of acetyl chloride, cyclohexene and benzene.

烷基环己基苯甲酸的合成研究:主要研究了乙基环己基苯甲酸的合成,以乙酰氯、环己烯、苯为原料,三氯化铝为催化剂,合成乙酰基环己基苯,用水合肼、氢氧化钾、一缩二乙二醇经过高温加热还原羰基(Wolff-黄鸣龙还原),将所得到的乙基环己基苯用乙酰氯进行傅克酰基化得到乙基环己基苯乙酮,所得中间体经过处理之后直接得到反式产物,将反式异构体的乙酰基氧化得到反式烷基环己基苯甲酸。

Comb-shaped copolymer of polycarboxylate containing carboxyl,sulfonic groups(-SO3M),polyethylene glycol(-OC2H4-) was synthesized by monomers of sodium 2-acrylamido-2-methylpropane sulphonate,acrylic acid,polyethylene glycol monoester acrylate under certain conditions.

本文通过2-丙烯酰胺-2甲基丙基磺酸钠与丙烯酸、聚乙二醇单丙烯酸酯在一定条件下发生聚合反应合成含有羧基、磺酸基(—SO3M)、聚氧乙烯链(—OC2H4—)等侧链的高性能减水剂PC。

In comparison with the pure standards and the retention indices RI(subscript s reported in the literature, a total of 302 volatile compounds were identified in Changyu XO brandy, including 30 alcohols, 35 aldehydes and ketones, 20 carboxylic acids, 104 esters, 24 substituted benzenes and derivatives, 14 phenolic derivatives, 14 acetals, 16 furan derivatives, 22 terpenic and norisoprenoidic derivatives and 23 others.

实验先采用液-液萃取方法提取张裕XO级白兰地的挥发性成分,然后将酸性成分与碱性和中性成分分离,再采用柱色谱分离手段将其分离为若干个级分并浓缩,采用气相色谱-质谱、标准品比对、保留指数值比较等方法对分离得到的各级分中的成分进行了鉴定,在白兰地中共鉴定出302种挥发性成分,包括醇30种、醛酮类35种、酸类20种、酯类104种、苯同系物及其衍生物24种、酚类14种、缩醛14种、呋喃类16种、萜烯类22种和其他物质23种。

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