查询词典 esters

Phthalic acid esters ; source ; toxicity ; distribution

邻苯二甲酸酯；来源；毒性；分布

Phthalic Acid Esters,a Kind of important industrial materials are used in many industries,such as plastic,painting,rubber.pesticide,cosmetic,etc.In recent years,researches indicated PAEs exhibit their properties as that of hormenes,have been called environmental hormene and cause environmental problems all over the world.

邻苯二甲酸酯作为一类重要的工业原料，被广泛用于塑料、油漆、橡胶、农药、化妆品等行业，近年的研究表明邻苯二甲酸酯具有环境激素的作用，由此引起的环境问题得到世界的普遍关注。

Soils sampled from vegetable fields and sediments from the Pearl River all showed significant genotoxicity to V. faba, and their contents of polycyclic aromatic hydrocarbons, phthalic acid esters and heavy metals were also relatively high. There were good correlation between their genotoxicity to V. faba and their relevant contents of PAHs and heavy metals.

广州市郊区菜地土壤样品及所有的珠江沉积物对蚕豆根尖有明显的遗传毒性，对应多环芳烃、邻苯二甲酸酸类和重金属的含量相对较高，其中重金属元素和PAHs的含量与对蚕豆根尖的遗传毒性有较好的相关性。

All the newly synthesized esters were evaluated biologically against susceptible strain of mosquito es, houseflies and German cockroaches.

对所有合成的酯用敏感系的蚊，家蝇和蠊作了生物活性测试。

Methods: By using solid phase extraction and gas chromatography/mass spectroscope ,main Phthalate esters in surface water samples from the urban rivers and ponds in suburb were determined.

采集市区河水和市郊鱼塘水，固相萃取法富集水样，气-质联机测定水样中PAEs浓度。

Liq. paraffin 10.0, lanolin 2.0, beeswax 5.0, polysorbate 80 3.5 sorbitan monofatty acid esters 1.5, water and Na4GeO4 72.0 and triethylamine 0.5%.

例如，一种乳液可被制备，它含有液体石蜡10.0%；羊毛脂2.0%；蜂蜡5.0%；聚山梨糖酸酯803.5%；山梨糖醇的单脂肪酸酯1.5%；水和Na4GeO472.0%及三乙胺0.5%。

Perchlorate esters, when exposed to impact, behave in the same manner as nitroglycerine.

高氯酸酯受到冲击时与硝化甘油类似会爆炸。

A clear resin derived from polymerised esters of various acrylic monomers. Acrylics are used for automotive topcoats and in other applications where resistance to chalking with exposure to sunlight is important

一种由不同丙烯酸单体聚合的透明的酯类树脂，丙烯酸树脂同在汽车顶涂或其他的场合在阳光曝晒下具有非常高的耐粉化性能。

Synthesis and antiviral activity of watersoluble esters of acyclovir ［9［(2hydroxyethoxy)methyl］guanine］［J］.

阿昔洛韦复乳的研究：大鼠吸收动力学、生物利用度和趋肝性［J］。

In this dissertation, the efforts were focused on design and synthesis of new types of chiral and achiral azoamide hosts,bowl-shaped steroid cholic acid methyl esters with one chiral arm under microwave irradiation and heteroaromatic molecular tweezers under microwave irradiation in solid state and their molecular recognition as well as enantioselective recognition.

本文致力于新型手性不对称脲、胆甾和芳杂环类分子钳受体的设计合成及其对阴离子、中性分子和手性分子的识别及对映选择性识别性能研究，取得了一系列具有重要学术意义与应用前景的创新性结果。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。