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Stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.

综述羧酸衍生物烯醇盐氧化规律,重点立体选择性

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In the oxidation reaction of cyclohexene, total selection of cyclohexene oxide, cyclohexanol, cyclohexenol and 2-cyclohexene-l-one reaches 98.5%, conversion reaches 33.2%.

环己烯氧化反应中,对环氧环己烷、环己醇、环己烯醇和环己烯酮选择性共达到98.5%,转化率达到33.2%。

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VOA Daily Standard 2019年3月

That's because it's supposed to not be. Vinal? Laser cut trim?

是因为本来就没照历史上服饰去设计。聚乙烯醇纤维?激光修

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SciShow

And the two chemicals in question here are androstadienone and estratetraenol.

里提到两种化学质是雄烯二酮和雌四烯醇

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生活大爆炸(视频版) 第3季

I preserved in a one percent solution of polyvinyl acetal resin.

我把它保存在纯净 聚乙烯醇缩醛树脂里了。

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VOA常速英语_娱乐

Vinal? Laser cut trim? That was not of the 1700s, so this is new technological, fresh fabric that she wanted to use.

聚乙烯醇纤维?激光修是在18世纪,所以是她使用新技术造出新织

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Osmosis-微生

Mosquitoes find their blood-meals using chemical compounds that we and other organisms give off, like carbon dioxide, ammonia, lactic acid, and octenol.

在寻找食时,蚊子会利用我们和其他生释放二氧化碳、氨、乳酸和辛烯醇

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Boost Your Biology with Lucas Aoun

I mean, another way that they could go about this is using a low dose of DHEA and pregnenolone.

意思是,他们可以采用另一种方法是使用低剂量DHEA和孕烯醇酮。

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SciShow

So AND and EST might be signaling something in your body, because lots of steroids do.

所以雄烯二酮 (AND) 和雌四烯醇 (EST) 可能在向你身体发送某种信号,因为很多类固醇都会样做。

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Boost Your Biology with Lucas Aoun

And that's because I'd imagine DHT has a positive effect on this allopregnenolone and that allopregnenolone has a GABA potentiating action.

是因为我认为双氢睾酮对异孕烯醇酮有正面影响,而异孕烯醇酮具有增强GABA作用。

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SciShow

Pregnant women in the third trimester turn AND into a different chemical called estratetraenol or EST, which can be found in their urine.

怀孕妇女在第三 trimester 会将 AND 转化为一种叫做雌四烯醇或 EST 同化学质,质可以在她们尿液中找到。

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SciShow

Since only pregnant women make EST, the idea that it – or AND, for that matter – could be a sex pheromone is controversial.

由于只有怀孕女性会产生雌四烯醇 (EST),因此认为它——或者说是雄烯二酮 (AND)——可能是性信息素观点颇具争议。

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【健康生活】Wise Traditions Podcast

It is almost always in American society where we value productivity over pregnenolone, the mother hormone that is used to generate all of your adrenal hormones.

在美国社会中, 我们几乎总是更看重生产力而非孕烯醇酮,种母体激素是生成所有肾上腺激素基础。

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SciShow

But this research tested how 94 Australian college students, about half men and half women, reacted to gender-neutral faces on computer screens after smelling AND, EST, or a steroid-free control.

项研究测试了94名澳大利亚大学生(大约一半是男生,一半是女生)在闻到雄烯二酮 (AND)、雌四烯醇 (EST) 或含类固醇对照样本后, 对电脑屏幕上性别中立脸部有何反应。

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SciShow

One study showed that exposure to AND or EST slightly affected whether its 96 participants – a mix of straight and gay men and women – rated a walking style as more masculine or feminine, respectively.

一项研究表明,接触雄烯二酮 (AND) 或雌四烯醇 (EST) 轻微影响了其96名参与者(包括异性恋和同性恋男性及女性)对走路方式评为更阳刚或阴柔程度。

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