通过对一种1,4 -二醚为内给电子体的聚丙烯催化剂进行性能研究,揭示此类催化剂的一些特殊性能。
The internal donor is 1, 4-diether in this polypropylene catalyst, and this catalyst has some special properties.
研究了由二丙二醇单烯丙基醚制得的不饱和聚酯树脂的风干性能。
The air drying property of unsaturated polyester resin prepared from dipropylene glycol monoallyl ether was studied.
在最坏的情况下,每磅进入到大气中的地氟醚相当于1620磅二氧化碳做起的作用。
In the worst case, each pound of desflurane that enters the atmosphere is the equivalent of 1620 pounds of carbon dioxide.
村里超过97%的妇女血液中含多溴二苯醚,在同一个月里,多溴二苯醚含量高的妇女的怀孕数是低含量妇女的一半。
More than 97% of the women had PBDEs in their blood, and those with high levels were half as likely to conceive in any given month as the women with low levels.
达扬教授称,在欧洲,那些最可疑的多溴二苯醚七八年前就已被禁用。
In Europe the most suspect PBDEs have been banned for seven to eight years, says Dr Dayan.
除了生育影响以外,对于动物的测试还发现,多溴二苯醚会影响脑部发育和甲状腺激素,而该激素控制细胞的生长发育及人体其他机能。
In addition to reproductive effects, animal tests have found that PBDEs can alter brain development and thyroid hormones, which regulate growth and development of cells and many key bodily functions.
由于多溴二苯醚影响人类健康的研究还刚刚起步,所以该项研究非常重要。
Because little work has been done on the effects of PBDEs on human health, this is an important study.
当家具泡沫破裂的时候,往往会释放多溴二苯醚到房屋灰尘当中。
Furniture foam tends to release PBDEs into house dust when it breaks down.
叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)不仅用于保护食品,还被用来保存化妆品和药品中的油脂。
In addition to preserving foods, BHA and BHT are also used to preserve fats and oils in cosmetics and pharmaceuticals.
几乎每一个接受测试的美国人体都有五溴和八溴二苯醚的痕迹,这两种物质是家具业用得最广泛的。
Nearly every American tested contains traces of penta and octa BDE, the two formulations most widely used in furniture.
有证据证明,某些人可能难以代谢叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT),导致健康和行为改变。
There is evidence that certain persons may have difficulty metabolizing BHA and BHT, resulting in health and behavior changes.
“由于工业化国家的人处于多溴二苯醚遍布的环境中,即使受精力的小小下降都可能引起公共卫生的广泛影响,”科学家在他们的研究中说道。
"Because exposure to PBDEs is ubiquitous in industrialized nations, even small decreases in fecundability may have wide-reaching public health impacts," the scientists said in their study.
“由于工业化国家的人处于多溴二苯醚遍布的环境中,即使受精力的小小下降都可能引起公共卫生的广泛影响,”科学家在他们的研究中说道。
“Because exposure to PBDEs is ubiquitous in industrialized nations, even small decreases in fecundability may have wide-reaching public health impacts,” the scientists said in their study.
“多溴二苯醚含量的提升对于生育能力的下降是一个危险因素,”长期研究人类在阻燃剂环境中的生存状况的阿德诺博士说道。
"Elevated levels of PBDEs might be a risk factor for reduced fertility," said Schecter, who studies how people are exposed to the flame retardants.
在巴布亚新几内亚部分地区,青蒿醚加苯芴醇和二氢青蒿素加哌喹分别是治疗小儿恶性疟原虫疟疾和间日疟的最具成本效益的治疗方案。
A+L and DHA+PQ are highly cost-effective regimens for the treatment of paediatric P. falciparum and P. vivax malaria, respectively, in parts of Papua New Guinea.
叔丁基羟基茴香醚(BHA)和二叔丁基对甲酚(BHT)的氧化特性和/或代谢产物也许具有致癌性或致瘤性,不过,同样的反应也有可能应对氧化压力。
The oxidative characteristics and/or metabolites of BHA and BHT may contribute to carcinogenicity or tumorigenicity; however the same reactions may combat oxidative stress.
在最坏的情况下,进入大气的每磅地氟醚都相当于1620磅的二氧化碳。
In the worst case each pound of desflurane that enters the atmosphere is the equivalent of 1,620 pounds of carbon dioxide.
在最坏的情况下,进入大气的每磅地氟醚都相当于1620磅的二氧化碳。
In the worst case each pound of desflurane that enters the atmosphere is the equivalent of 1, 620 pounds of carbon dioxide.
类似地,在过去的30年里,像我们知道的多溴二苯醚(PBDEs)等阻燃化学药剂也被广泛应用,但我们并不了解它们具有的其他功能。
Similarly, over the last 30 years flame-retardant chemicals known as polybrominated diphenyl ethers (PBDEs) have been widely used, although little is known about their broader effects.
被测试的两种阻燃剂材料-五溴联苯醚(penta-PBDE)和八溴二苯醚(octa-PBDE)-自2006年起已在美国被禁用。
The two flame retardants tested – penta and octa PBDE – have been banned in the United States since 2006.
妇女血液中的多溴二苯醚每增加10倍,她们的怀孕几率就下降30%。
Each ten-fold increase in a woman's blood was linked to a 30 percent decrease in her odds of getting pregnant.
根据酯在碱性条件下水解反应生成醚的原理,研究了以甲基硫酸钠废渣为原料制备二甲基硫醚的方法。
Based on the principle of ester hydrolyzation to ether in alkali condition, the process for preparation of dimethyl sulfide from sodium methyl sulfate residue was investigated.
她不喜欢乙二醇醚。
氧气优先与叔丁基羟基茴香醚(BHA)或二叔丁基对甲酚(BHT)反应,而不是和油脂反应,因此能防止它们变坏。
Oxygen reacts preferentially with BHA or BHT rather than oxidizing fats or oils, thereby protecting them from spoilage.
间苯二酚二环氧醚胶粘剂是一种室温固化高强度胶粘剂。
Resorcin diepoxide ether adhesive is a high strength adhesive curing at room temperature.
目的研究八氯二丙醚对体外培养中国仓鼠肺细胞(CHL)DNA合成影响。
Objective To study effects of octachlorodipropyl ether on DNA synthesis in CHL in vitro.
以二苯醚与苯甲酰氯为原料,合成了一种新型的激光光敏刺——4 -苯氧基二苯甲酮(PBZP)。
A new photoinitiator, 4-phenoxy benzophenone (PBZP), was synthesized and characterized using diphenyl ether and benzoyl chloride as raw material.
采用乙二醇单丁醚脱水的方法合成了高效的具有类似二丁基卡必醇结构的新金萃取剂体系,探讨了其合成工艺。
Hoping for dibutyl carbitol(DBC)through the dehydration of glycol butyl ether, a new highly effective extractant system for gold with structure similar to DBC was synthesized in this paper.
环氧乙烷广泛应用于合成乙二醇、二甘醇、三甘醇、乙醇胺、乙二醇醚和乙氧基化合物。
EO is widely used in synthesis of EG, diethylene glycol, triethylene glycol, aminoethyl alcohol, glycol ether, and oxyethylation compounds.
环氧乙烷广泛应用于合成乙二醇、二甘醇、三甘醇、乙醇胺、乙二醇醚和乙氧基化合物。
EO is widely used in synthesis of EG, diethylene glycol, triethylene glycol, aminoethyl alcohol, glycol ether, and oxyethylation compounds.
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