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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-烷基乙酰胺的水解。

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

烷基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.

研究烷基二硫代磷酸剂在NR胎面胶中的应

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

水,十六醇,丙二醇,十二烷基硫酸钠,硬脂醇, Methylparaben , Propylparaben , Butylparaben 。

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Moreover, the results of IR spectrum and apolar component of surface free energy showed that the alkyl chains of OTS tilted on the surface of PTW after the modification.

IR分析和色散分量测定表明,改性后OTS的烷基链倾斜在PTW表面。

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Biocat-alytic production processes have been set up for the manufacture of special esters like cetyl ricinoleate, so-called emollient esters, used as skin caring oils in cremes and lotions.

化妆品行业上已经建立了生物催化过程来生产如十六烷基醇酸酯等化妆品工业中应的酯。

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Two kinds of polymerizable liquid crystal compounds have been prepared successfully in the paper, one is tolan-type liquid crystal compound, another is a phenylcyclohexanethyl liquid crystal compound.

以碘代烷氧基苯与烷基苯乙炔为中间体,采为催化剂偶联的方法合成了二苯乙炔类液晶化合物。

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A process for decolourization of anionic dye containing wastewater by using waste plastics in the presence of cationic auxiliary and sodium dodecylbenzene sulfonate has been studied.

探讨了在阳离子助剂及十二烷基苯磺酸钠存在,废旧塑料对阴离子染料的脱色工艺。

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The diolefins and alkenyl aromatics are very unstable components which can give gums by polymerization.In giving olefins and alky aromatics the hydrogenation improves the product quality.

二烯烃和烯基芳烃是非常不稳定的组分,可聚合产生凝胶。对于给定烯烃和烷基芳烃,氢化可以改善产品质量。

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Through IR analysis, the main component in group II was identified as dialkyl-benzene, while in Group III was monoalkyl-benzene as well as dialkyl-tetralin and indane (DTI).

然后紫外法求得了第Ⅱ族组分中邻、间二烷基苯之和与对二烷基苯的质量比约为1∶409。

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A new camphol sandaliol was synthetized by selective alkylation of isocamphol and phenol with acidic catalyst, and following hydrogenated in the presence of Raney nickel.

本文异龙脑与苯酚在酸性催化剂作行选择性烷基化反应,再经催化氢化还原得到龙脑檀香产品。

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The study is the synthesis of BFO in the medium of PEG or its derivatives - polyethylene glycol alkyl ether and polyethylene glycol alkylphenyl ether.

本论文以PEG或其衍生物脂肪醇聚氧乙烯醚和烷基酚聚氧乙烯醚为介质合成BFO。

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Modified larch tannin was prepared by grafting copolymerization and sulfoalkylation, and successfully used as retanning agent, possessing good water solubility and enhanced penetration rate.

接枝共聚和磺烷基化的方法对落叶松单宁改性。

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Technology Progress of producing BTX aromatics from heavy fraction of pyrolysis gasoline and correlative hydrodealkylation and non-aromatics hydrocracking techniques were reviewed in this paper.

综述了裂解汽油重质馏分增产BTX芳烃的技术展以及与此相关的加氢脱烷基和非芳烃加氢裂解技术。

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An alternate procedure is to soak the affected areas in an iced 0.13% water solution (1:750) of Zephiran chloride (benzalkonium chloride solution, NF).

一个替代程序是氯化苄基.二甲基.烷基铵(杀藻胺,NF)的0.13的冰水溶液(1:750)来浸泡患处。

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It was shown that the energy of interaction between the polyoxyethylene and the noncrystalline SiO2 surface was below than hexadecyl accumbent benzene sulfonate.

据此分析,聚氧化乙烯能在非晶质SiO2表面形成稳定吸附且部分替换十六烷基对苯磺酸钠。

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N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯苯甲酸和对乙氧基苯胺为原料,经过胺的苯基化、二芳胺的环化、N-烷基化、硫代化反应合成了N-丁基-2-乙氧基硫代吖啶酮。

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A new paint remover was synthesized with chloroalkane as primary solvent,organic acid as accelerator and organic compound containing N and S as inhibitor.

以氯代烷为主溶剂、烷基醇为助溶剂、有机酸为剂、含氮和硫的有机化合物为缓蚀剂合成了一种新的脱漆剂。

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This method was compared with that of desulfonation GC and the relative deviation of LAS average molecular weight is less than 0.1%.

所测得的烷基苯磺酸的平均相对分子质量与气相色谱法相比,相对偏差不大于0.1%。

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Thirteen new compounds of the alkyl styryl indoline spirobenzopyrans were synthesized from the condensation of 2-methylene indoline with the designed salicylaldehyde.

2-亚甲基吲哚啉和取代水杨醛缩合得到十三种新的烷基苯乙烯基吲哚啉螺苯并吡喃。

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CNN 10 学生英语 20244月合集

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

烷基和多氟烷基都是永久性化学物质。

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双语版 TED-Ed 演讲精选

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多数细胞死亡频率更高,其他细胞有时间修复受损DNA并且不会累积相同浓度烷基化剂。

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科学60秒-科学美国人 20236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 出现特富龙等产品,现在已经演变名为 PFAS 全氟烷基和多氟烷基物质、9000 多种化学品群体。

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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,它们吸收高浓度烷基化剂,它们DNA经常暴露在外,很少修复。

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双语版 TED-Ed 演讲精选

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,被称为烷基化剂。

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Chemistry For Your Life

And PFAS is a great example of that.

全氟烷基物质就是一个很好例子。

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The Joe Rogan Experience

You know, our water is toxic, and we have fluoride, we have chlorines, we have PFAs, polyfluoroalkyls, we have microplastics, we have bisphenols.

你知道,我们水是有毒,里面有氟化物、氯气、全氟/多氟烷基物质(PFAS)、微塑料和双酚类物质。

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上周今夜秀

Specifically, we're going to be talking about a particular class of chemicals tonight called PFAS, which stand for per- and polyfluoroalkyl substances.

今晚我们将特别探讨一类名为PFAS化学物质,其全称为全氟和多氟烷基物质。

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Science Fiction - Daily Short Stories

20 kilograms of duodec is nobody's firecracker, but it may be the least of what's going to go off.

20公斤十二烷基并非儿戏,但这可能只是即将引爆序幕中最微不足道一部分。

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彭博洞察

PFAS stand for Per-and Polyfluoroalkyl Substances.

PFAS 表全氟烷基物质和多氟烷基物质。

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TIME for Kids(3-4级)

PFAS are sometimes referred to as " forever chemicals." They're in everyday products, such as makeup.

全氟和多氟烷基物质有时被称为“永久化学品”。它们存在于日常用品中,比如化妆品。

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TIME for Kids(3-4级)

She works with government officials there to reduce chemicals like PFAS.

她与当地政府官员合作,减少全氟和多氟烷基物质等化学物质使用。

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Huberman Lab

What it tells us is that.

这告诉我们,进入这些产品水中可能含有微塑料、纳米塑料、来自其他来源全氟烷基物质其他物质。

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Chemistry For Your Life

They're like food, dye, PFAS, cold medicine.

它们就像食品、染料、全氟烷基物质和感冒药一样。

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Today, Explained

It's actually other chemicals like PFAS.

实际上是指其他化学物质,比如全氟烷基物质(永久化学品)。

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Huberman Lab

The water going into those products contains either microplastics, nanoplastics, PFASs from other sources or something.

这些产品中水含有微塑料、纳米塑料、来自其他来源全氟烷基物质其他某种分。

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Huberman Lab

These things have names other than PFAS, which is an acronym, things like perfluoroalkalo, things like polyfluoroalkalo.

除了PFAS这个缩写外,这些东西还有其他名称,比如全氟烷基、多氟烷基等。

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TIME for Kids(3-4级)

It bans PFAS in common items.

它禁止在常见物品中使用全氟和多氟烷基物质。

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Huberman Lab

The point here is that there are a lot of different sources of these BPAs, BPSs, PFAS.

关键在于,这些双酚A(BPA)、双酚S(BPS)、全氟烷基物质(PFAS)等所谓“永久化学品”,以及微塑料、纳米塑料,它们来源多种多样。

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