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This investigation provided an environment-friendly process for the synthesis of methyl anthranilate.

摘要提供了一种环境友好合成工艺制备香料邻氨基苯

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The toxicity effect of 6 carbamic ester pesticides on Anabaena flos-aquae was studied.

以水华鱼腥藻为材料研究了6种氨基类农药对藻类毒性效应。

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Method The target compound was synthesized from clarithromycin via hydrolyzation,acetylation,cyclic carbonatation,oxidation,decarbonatation,acylation,cyclic carbamatation and cyclization.

方法以克拉霉素为起始原料,经水解、酰化、环碳化、氧化、脱碳化、酰化、环氨基化和环合等应合成目标化合物。

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Water (Aqua), Glycerin, Propylene Glycol, Hydroxyethylcellulose, Tetrasodium EDTA, Citric Acid, Sodium Benzoate.

水(水) ,甘油,丙二醇,羟基纤维素, Tetrasodium二胺四,苯钠。

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Seamless sheath of ether-based urethane resistant to cathodic, hydraulic and other environmental conditions.

无缝铠装醚基氨基。耐阴极、液压和其它环境条件。

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The reaction principal, reaction procedure and flowsheeting in the potassium sulfate method are included.

给出了钠法应原理、应过程以及工艺流程。对原料消耗、产品规格及质量测定作了简单介绍。

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Both volumetric method and gravimetric method can be used for determination of Zn in thiofide ZDBC.The gravimetric method is easy to operate but it spents more analysis time.

容量法和重量法均可用于测定橡胶硫化促进剂二丁基二硫代氨基锌(ZDBC)中锌含量。

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This work applied the new type capillary column modified by barium sulfate. It has completed the solubilty of high boiling ester in para-methyl-toluate with the method of chromatography.

研究了硫钡微晶改性新型毛细管柱应用.可用于色谱法测定完全互熔性高沸点类在对甲基苯溶解度.

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Abstract: Using lead benzoxy as curing agent,cured epoxy resin was analyzed by means of IR spectrum and DSC curves.Lead benzoxy was considered to be catalytic curing agent.

摘 要: 采用苯铅做固化剂,通过对环氧树脂固化物红外光谱及DSC曲线分析,认为苯铅是一种催化型固化剂。

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Using lead benzoxy as curing agent,cured epoxy resin was analyzed by means of IR spectrum and DSC curves.Lead benzoxy was considered to be catalytic curing agent.

采用苯铅做固化剂,通过对环氧树脂固化物红外光谱及DSC曲线分析,认为苯铅是一种催化型固化剂。

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Three open crown ethers were synthesized for the first time by using parathesin as the terminal group.They were characterized by IR, 1HNMR ,MS and EA.

以对氨基苯为端基合成了3种酰胺型开链冠醚,并通过IR、~1HNMR、MS和元素分析确证了它们结构。

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The noncontinuous formic acid Polyacrylamide Gel Electrophoresis (APAGE) of wheat gliadin proteins was improved in bisacrylamide concentration,preparation of the gel and extraction method.

本研究利用国产设备和药品对以为缓冲体系小麦醇溶蛋白电泳方法进行了研究。

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Hordenine propyl formate and chemical osmosis are the two ways of extracting Glutathione(GSH) from yeast have been introduced and compared in this review.

介绍了从酵母中分离纯化谷胱甘肽(GSH)两种抽提方法:对羟基苯法和化学渗透法,并对其进行了对比。

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Formic acid still can be used at succulence and frumentaceous preservation, have the function that be restrained apparently or prevents mould to grow.

还可用于青饲料与谷物保藏,有明显抑制或防止霉菌生长功能。

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The effects of electrical stimulation to the nucleus termination nervi trigemini(NTV) on the activities of genioglossus were studied in 35 rabbitS anesthetized withurethane.

本工作在35只氨基麻醉、自主呼吸家兔上观察了刺激三叉神经终止核(NTV)对颏舌肌肌电活动影响。

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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.

以邻氯苯和对氧基苯胺为原料,经过胺苯基化、二芳胺环化、N-烷基化、硫代化应合成了N-丁基-2-氧基硫代吖啶酮。

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Citral was synthesized by catalytical rearrangement of dehydrolinalool in toluene solution with the present of molybdenyl acetylacetonate, benzoic acid and dimethyl sulfoxide (DMSO).

摘要采用脱氢芳樟醇为原料,在酰丙酮钼、苯、二甲基亚砜(DMSO)甲苯溶液中催化重排合成檬醛,考察了檬醛在不同体系中热敏性。

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Synthesis of isoamyl formate, isoamyl acetate, isoamyl propionate, isoamyl butyrate, isoamyl isobutyrate and isoamyl isovalerate by catalysis of hydrated ferric chloride are reported.

研究了氯化铁催化合成异戊异戊、丙异戊、丁异戊、异丁异戊和异戊异戊

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In this study, the epoxidation of styrene-isoprene-styr en e triblock copolymers (SIS) by an in situ generated peracid method was discussed .

利用过对热塑弹性体SIS进行环氧化改性,合成了环氧化SIS(ESIS)。

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In the liquor of acetic acid,the catalyzed synthesis of m-chlorobenzoic acid by the reaction of m-chlorobenzal dehyde and potassium bromate was studied.

在醋溶液中,以间氯苯甲醛、溴钾为原料合成间氯苯,分别研究了应温度、应时间、原料配比、溶剂用量等条件对合成影响,确定了最佳工艺条件。

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环境与

Nonylphenols or phthalates aren't due to regular human activity?

基酚或邻苯二盐不是来源于人类日常活动?

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当月 CNN 10 生英语

Studies have shown about 100% of Americans have phthalates in their body.

研究表面,所有美国人体内都含有邻苯二盐。

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Reel知识卷轴

Phthalates as a class are called anti-androgens.

邻苯二盐作为一类被称为抗雄激素。

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经济人-

Anthony Remijan, of America's National Radio Astronomy Observatory, who is one of the astronomers putting ALMA through its paces, is studying the formation of methyl formate, a compound widely used on Earth in applications from insulation to insecticides.

美国国家射电天文台Anthony Remijan是将ALMA引入这个方向天文家中一员。他正在研究形成过程。从绝缘体到杀虫剂,可以说地球上到处都是酯。

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大西月刊(文章版)

So typically, my understanding is-one rule of thumb is that harder, sturdier plastic is maybe shedding fewer phthalates than the very flexible ones, but they could be shedding other compounds of concern.

一般来说,我理解是,有个经验法则,更硬、更坚固塑料可能比非常柔韧塑料脱落邻苯二盐更少,但它们可能会脱落其他让人担忧化合物。

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Sodium benzoate, for example, has been found to react with ascorbic acid — aka Vitamin C — to produce benzene, a hydrocarbon that's known to cause cancer.

例如,研究发现苯钠与抗坏血——也就是维生素 C——反应产生苯,而苯是一种已知会导致癌症碳氢化合物。

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小故事大纪实

The forage ants, for example, contain formic acid, so when you pop them, they taste like little limes or lemons because of the acidity.

比如,采集来蚂蚁富含,所以当你食用时,存在会让蚂蚁有种橙或柠檬味道。

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经济人-

Usually it is synthesised either from methanol and formic acid, or methanol and carbon monoxide.

通常它由醇和,或醇和一氧化碳合成。

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华尔街日报

There have been some preliminary studies that show that there could be possible linkage between parabens and cancer.

有一些初步研究表明对羟基苯酯和癌症之间可能存在联系。

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VOA视频精选

What we know is that a group of substances, the phthalates represent a threat to our health.

我们知道,一组物质,邻苯二盐,能对我们健康构成威胁。

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华尔街日报

The preservative used in this product is sodium benzoate.

本产品使用防腐剂为苯钠。

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经济人-

The known syntheses are effective, and methyl formate is already cheap.

酯熟知合成方法很有效,而且它很便宜。

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大西月刊(文章版)

They include things you might have heard of, like phthalates, that have also been associated with lots of harmful health outcomes.

它们包括你可能听说过东西,比如邻苯二盐,它也与许多有害健康后果有关。

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Scishow 精选系列

Denatonium, in its marketed form “Bitrex, ” has held the Guinness World Record for bitterest substance for half a century.

地那铵市场推广形式是“苄铵酰胺”,半个世纪以来,它一直是吉尼斯世界纪录最苦物质保持者。

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环境与

Then we also have a few phthalates that exceed the limits set out by EU quality standards.

还有一些邻苯二盐——也超出了欧盟质量标准限制。

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华尔街日报

They claim that this bottle is paraben free.

他们说这瓶不含对羟基苯酯。

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华尔街日报

The company said it recently shifted away from this preservative combination to one with sodium benzoate.

该公司表示,它最近已从这种防腐剂组合转向苯钠。

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华尔街日报

The paraben issue is a very provocative topic.

对羟基苯酯问题是一个非常具有挑衅性话题。

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华尔街日报

I would agree that this is a paraben-free product.

我同意这是不含对羟基苯产品。

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华尔街日报

There's no conclusive scientific data that links paraben usage and cosmetics directly to cancer, but the possibilities of it being a carcinogen has provoked some limitations on how this ingredient is being used in the cosmetic space.

没有确凿数据表明对羟基苯酯和化妆品使用与癌症直接相关,但它作为致癌物可能性已经对这种成分在化妆品领域使用方式提出了一些限制。

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