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Alkyl indicant is a new non-ionic surface active agent.

糖苷是一类新型的非离子表面活性剂。

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The application of alkyl dithiophosphate accelerator in NR based tread compound was investigated.

二硫代磷盐促进剂在NR胎面胶中的应用。

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The essence of deacetylation reaction of chitin was the hydrolysis of N-alkyl ethanamide.

摘要甲壳质脱乙酰化反应其本质是N-乙酰胺的水解。

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Ingredients: alkyl indican, cucumber extract, VC, etc.

糖苷、小黄瓜提取液、VC等。

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Water, Cetyl Alcohol, Propylene Glycol, Sodium Lauryl Sulfate, Stearyl Alcohol, Methylparaben, Propylparaben, Butylparaben.

水,十六醇,丙二醇,十二,硬脂醇, Methylparaben , Propylparaben , Butylparaben 。

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Alkylation of ambident nucleophiles different places by using phase-transfer catalytic agent were studied in this paper.

本文研了在相转移催化条件下对两可亲核试剂不同位置的化反应。

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The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.

用溴代苯乙酮和溴苄化试剂,以高产率和100%的转化率以及100%的选择性得到了酚的O-化产物。

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The fuberidazole was prepared by reaction of O-phenylendiamine with furfural at the presence of CTMABas catalyst.

以邻苯二胺和糠醛原料,以十六甲溴化铵(CTMAB)催化剂合成了麦穗宁。

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A separation model of ionizable and neutral enantiomers with cyclodextrin-sodium dodecyl sulphate (SDS) micellar electrokinetic chromatography was established.

建立了环糊精-十二胶束电动色谱中可电高及电中性-光学异构体的分离模型。

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The reactive surfactant, sodium allyl hydroxyalkyl sulphonate(SAHS) was applied as modifying agent to polymerize elastic acrylic emulsion.

使用烯丙(SAHS)可聚合乳化剂,改性合成了弹性丙烯酯乳液。

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Abstract: Effects of surfactant on viscosity of cetyl hydroxyethylcellulose (CHEC) solution were investigated by rheometer.

摘要 :通过流变仪研了几种表面活性剂对十六羟乙纤维素(CHEC)溶液黏度的影响。

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Structure, mechanics, electricity, calorifics, radialization and chemicalproperties are reviewed for polyperfluoroethylene-propylene and tetrafluoroethylene perfluoroalkyl vinyl ether copolymer.

分别阐述了聚全氟乙丙烯和四氟乙烯全氟代乙烯醚共聚物的结构和力学热学、辐射、化学性能。

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Synthesis of alkylated chlorosilane by Grignard reagent has been investigated,which provides a good way for preparation of organo-silicon compounds.

本文研了用格氏法制备取代氯硅的方法,有机硅化合物的研制提供了一个较好的途径。

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Some experiments were did on herbicide activity, and had found that activities of some compounds was good,especially 3,6-bis-benzyl-s-tetrazine.

对其中部分化合物进行了生物活性实验,发现有些化合物显示了较好的活性,同时发现取代的引入可以提高除草活性。

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General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.

制备方法包括对简单氨衍生物的亲核环化、类卡宾加成以及简单环丙化合物的衍生化合成等。

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PASP-PEG block structure copolymer,comb shaped PASP-PEG block structure copolymer,aspartic acid and glycine,glutamic acid or propalanine copolymer are prepared.

还可以对聚天冬氨的侧链进行改性,引入或烯烃、反应活性高的氨酯、磺等功能性团,使其得到更广泛的应用。

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Alkylation of Phenylacetonitrile was realized from phenylacetonitrile and benzyl chloride by using PS-PEG-400 as triphase phase transfer catalyst.

摘要利用固载化聚乙二醇-400三相相转移催化剂,以氢氧化钾的水溶液碱,从苯乙腈和苄氯出发合成了苯乙腈的单化物-α-苄苯乙腈。

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Abstract : Microwave-assisted chemical functionalization of single-walled carbon nanotubes, with undecyl groups decomposed from lauroyl peroxides was reported.

摘要 : 本文报道了微波辅助下,利用过氧化月桂酰分解得到的十一,化学功能化修饰单壁碳纳米管。

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In the past, a 0.13% water solution (1:750) of Zephiran Chloride (benzalkonium chloride solution, NF) was used successfully.

在过去,曾经成功地使用过氯化苄.二甲.铵(杀藻胺,NF)的0.13的水溶液(1:750)。

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With the mixture tests design, the interaction mechanism of borate, chlorinated paraffin and zinc dialkyldi thiophosphate (ZDDP) additives is studied.

用混料试验设计方法,研了硼酯、氯化石蜡和二二硫代磷锌(ZDDP)的相互用机理。

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CNN 10 学生英语 2024年4月合集

Perfluoroalkyl and polyfluoroalkyl are substances that are known as forever chemicals.

都是永久性化学物质。

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Take, for example, those first chemotherapy drugs, which are still used today and are called alkylating agents.

以第一批化疗药物举例,那些药物如今仍在使用,被称为化剂。

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PFAS stand for Per-and Polyfluoroalkyl Substances.

PFAS 代全氟物质物质。

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Because cancer cells multiply rapidly, they take in a high concentration of alkylating agents, and their DNA is frequently exposed and rarely repaired.

因为癌细胞迅速繁殖,它们吸收高浓度的化剂,它们的DNA经常暴露在外,很

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科学60秒-科学美国人 2023年6月合集

What started as products like Teflon in the late 1930s is now a group of more than 9,000 chemicals called PFAS or per- and polyfluoroalkyl substances.

在 20 世纪 30 年代末出现的特富龙等产品,现在已经演变名为 PFAS 或全氟物质的、9000 种化学品组成的群体。

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So they die off more often than most other cells, which have time to fix damaged DNA and don't accumulate the same concentrations of alkylating agents.

因此癌细胞比其他大数细胞死亡的频率更高,其他细胞有时间受损的DNA并且不会累积相同浓度的化剂。

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