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A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.

用糠醇和糠醛缩聚制备了新型树脂。

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The average molecular weight of polyoxytetramethylene glycol could be flexibly controlled by varying the...

未反应的四氢经适当处理后可以回收循环使用。

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Cu furaldehyde-ethylene diamine Schiff base complex was synthesized with the yield of 63.

合成了一种席夫碱合物——甲醛乙二胺铜合物,收率为63。

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Dibenzofuran(DF) is one of the model compounds for the study of biodegradation of dioxin-like pollutants.

二苯并(DF)是研究二英类化合物生物降解的模式化合物之一。

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Objective To explore the relationship between the illuminance and the observed order of reaction of photodegradation of nitrofurazone solution.

摘要目的研究西水溶液光解反应的表观反应级数和光照度的关系。

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Some new components were detected in the finished products, such as Hexanal, methyl-Cyclopentane, Heptanol, 2-Pentyl-Furan, Isophoron, and others.

阴干茶样中检测到的新增的香气成分:正己醛、甲基环戊烷、庚醇、2-正戊基尔酮。

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Furfuryl propionate was synthesized from furfuryl alcohol and propionyl chloride using hexahydropyridine as catalyst and anhydrous sodium bicarbonate as acid-caputor.

以α甲醇和丙酰氯为原料,以六氢吡啶为催化剂,无水碳酸氢钠为缚酸剂合成了α甲醇丙酸酯。

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Carbasugars,carbocyclic analogues of true sugars,are compounds in which the ring-oxygen of furanoid or pyranoid sugars is replaced by methylene group.

碳环糖是一类或吡糖环中的氧原子被亚甲基取代后形成的糖类似物。

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Two production methods for preparing furan through decarbonylation of furfural were introduced: i.e. liquid phase reaction and gas phase reaction.

摘要介绍糠醛脱羰法制备的2种生产方法:液相法和气相法。

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119.0 g of cyclopentyl bromide and 19.4 g of magnesium are reacted in ether or THF to give a cyclopentyl Grignard reagent.

119克环戊溴和19.4克镁在空气中或者四氢中加入环戊格尼亚试剂作发生反应。

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The two now isonicotnic acid hydrazone and N-oxide isonicotinic acid hydrazone of ethyl furoyl acetates were synthesised. The condensations were carried out in ethyl alochol medium.

合成了甲酰乙酸乙酯烟酰腙和甲酰乙酸乙酯N-氧化烟酰腙。缩合反应在乙醇中进行。

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Shell carbon black can be used to modify furane resin for significantly enhancing its electrostatic resistance and impact resistance,so that it is of greater suitability value.

采用谢尔炭黑改性树脂,能显著提高其抗静电、抗冲击性能,具有较大实用价值。

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Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本文分析研究了砂在铸型中的成型条件及光洁内表面的形成机理,并对比研究了覆膜和自硬砂在铸型内表面形成均匀覆砂层的可行性。

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Furanocoumarins aren't toxic cell-damaging chemicals on their own.

香豆素本身并非是有毒的破坏细胞的化学物。

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Reel知识卷轴

The hybrid, a cross between pomelos and red grapefruit has a fraction of the levels of furanocoumarins.

杂交是柚子和红柚子的杂交香豆素量只有一小部分。

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Osmosis-微生物

Staph saprophyticus infections can be treated with antibiotics like nitrofurantoin, or a combination of trimethoprim and sulfamethoxazole.

目前,腐生葡萄球菌感染可以用妥因等抗生素或联用甲氧苄啶与磺胺甲恶唑进行治疗。

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WIL生活启示录

Photo sensitizers, technically called " furanocoumarins" are toxins in plants that make animals and humans sensitive to light.

光敏剂,专业上称为“香豆素”,是植物中的毒素,能动物和人类对光敏感。

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SciShow - Chemistry

Furanocoumarins aren’t toxic cell-damaging chemicals on their own.

香豆素本身并不是有毒的破坏细胞的化学物质。

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Osmosis-微生物

Treatment relies on antibiotics like nitrofurantoin, or a combination of trimethoprim and sulfamethoxazole, as well as removing infected indwelling devices.

治疗依赖于妥因等抗生素,或联用甲氧苄啶与磺胺甲恶唑,并同时移除受感染的留置医用器械。

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SciShow - Chemistry

That way, they keep their furanocoumarin-riddled food in the dark, so UV light doesn’t activate these toxic compounds.

这样,他们将富香豆素的食物保存在黑暗中,因此紫外线不会激活这些有毒化合物。

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This bad skin reaction is caused by certain furanocoumarins, a group of compounds that some plants use to defend themselves and deter hungry herbivores.

该不良皮肤反应是有香豆素这某些植物用于自卫并抵制饥饿的食草动物的化合物引起的。

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Furanocoumarins are also found in bergamot oranges, which are a part of the iconic Earl Grey tea smell, and were a popular ingredient in perfumes.

香豆素也在佛手柑中被发现,们是伯爵茶标志性味道的组成成分,也是香水中很受欢迎的一成分。

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As humans, our opposable thumbs and culinary arts have helped us get around a lot of plant defense systems, but furanocoumarins can still affect us if we're not careful.

作为人类,我们进化成熟并掌握的烹饪技术帮助我们避开了很多植物的自我防卫系统,但是如果我们不小心,香豆素还是会对我们造成影响的。

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Osmosis-微生物

In this case, the stool culture can be helpful in deciding which antibiotics would be most effective against the infecting strain, and may include tetracyclines, ciprofloxacin, ofloxacin, furazolidone, or trimethoprim-sulfamethoxazole.

粪便培养可以帮助确定哪抗生素对感染菌株最有效,可用的药物包括四环素、环丙沙星、氧氟沙星、唑酮或甲氧苄啶-磺胺甲恶唑。

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SciShow - Chemistry

As humans, our opposable thumbs and culinary arts have helped us get around a lot of plant defense systems, but furanocoumarins can still affect us if we’re not careful.

作为人类,我们的对生拇指和烹饪艺术帮助我们避开了许多植物防御系统, 但如果我们不小心, 香豆素仍然会影响我们。

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With the energy from the UV radiation in sunlight, furanocoumarins can undergo a chemical reaction and bind to certain bits of DNA inside another creature's cells, messing with the DNA's structure.

在阳光中紫外线辐射作用下,香豆素就会发生化学反应,并且将少量的的某些DNA植入另一生物细胞内,破坏这些DNA的结构。

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SciShow - Chemistry

With the energy from the UV radiation in sunlight, furanocoumarins can undergo a chemical reaction and bind to certain bits of DNA inside another creature’s cells, messing with the DNA’s structure.

利用阳光中紫外线辐射的能量,香豆素可以发生化学反应, 并与另一生物细胞内的某些 DNA 位点结合, 从而扰乱 DNA 的结构。

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Limes, for instance, have a cocktail of three furanocoumarins that are concentrated in the juice and peel, ready to be released and activated whenever the fruit is bitten—or squeezed into your favorite drink on a beach day.

例如,酸橙汁和果皮中就有三香豆素,一旦被咬,或者是在海边被你挤进最爱的饮料时,就会随时准备被激发。

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