查询词典 benzo-tHiophene

This study monitored some important molecular ecotoxicological indicators of fish intoxicated by benzo pyrene.

通过测定典型的多环芳烃类物质苯并芘致毒后鱼体内几种重要分子生态毒理学指标的变化，来反映苯并芘致毒对鱼体的影响。

The ratios of perylene to benzofluoranthene and perylene to benzo pyrene are an effective index of thermal maturity.

／m、m／m［苯并芘］和m／m［苯并芘］比值是有机质演化程度的有效指标。

Dioxymethylene Mandelic Acid was synthesized by Benzo[1,3]- dioxole which was prepared from catechol .

以邻苯二酚为原料制备胡椒环，然后再从胡椒环合成3，4—亚甲二氧基苯乙醇酸，研究了第二步的反应温度、反应时间以及物料摩尔比对收率的影响，该步反应收率为88%。

The main purpose of this study was to evaluate the effect of BTH benzo (l, 2, 3 thiadiazole-7-carbothioic acid S-methyl ester at 25 ppm on control of powdery mildew of the common jasmin orange.

药剂处理过的围篱试区，每个月调查一次，连续4个月的观察，发现BTH具有显著减轻与迟缓白粉病发生的效果。

As the number of fused benzo rings increases, the total energy decreases andthe maximum absorption band shiftes to longer wavelength.

当酞菁环上稠合的苯环数目依次增加时，体系总能量〓有明显的降低，最大吸收峰变化的趋势都是红移，其中ZINDO／s方法计算得到的红移值达到72nm。

Exposure ecological risks of benzo pyrene to species in water, soil and sediment were investigated based on distributions of concentrations derived from the modeling and acute toxicity data for tested species from literature.

将根据上述研究得到的各环境介质暴露浓度分布及该化合物对实验生物急性毒性数据分析了苯并芘在天津污灌区水体、土壤和沉积物三种环境介质中的生态风险性。

Results showed that, within the test concentrations limits, total P450 content and SOD activity were very sensitive to the toxicity of Benzo pyrene. POD activity was elevated only when earthworms exposed to the maximum BaP concentration 10^(-2mgmL^(-1). CAT activity did not show any response to BaP exposure.

结果表明，在供试质量浓度范围内，蚯蚓体内P450含量和SOD活性与苯并芘污染胁迫存在明显的响应关系，POD活性在BaP的最大暴露质量浓度下10^(-2mgmL^(-1)被显著诱导，而CAT活性对BaP暴露无明显的指示作用。

Anesthesiologists sometimes mix one "benzo" with propofol to help put a patient under, but using three increases the danger for the patient.

麻醉医师有些时候把一种苯二氮类镇定剂与异丙酚混合使用令病人镇静，但是使用三种增加了病人的危险。

In order to develop a new method to study the desorption and bioavailability of hydrophobic organic chemicals in soils, a method using semi-permeable membrane device to study desorption of HOCs in soils has been set up, and assisted desorption of polycyclic aromatic hydrocarbons, phenanthrene, pyrene, and benzo［a］pyrenein three different kinds of soils was studied using SPMD.

为了开发一种表征土壤中憎水性有机污染物解吸及生物有效性的新方法，建立了半透膜被动采样装置研究土壤中有机污染物解吸行为的方法，利用SPMD分析了多环芳烃菲、芘和苯并［a］芘在3种不同性质土壤中的辅助解吸行为。

Then, inhibition mechanism and the relations between inhibition efficiency and molecular structure of inhibition of carbon steel in chlorhydric acid by benzene nitriles and quaternary ammonium salts are studied from microscope through quantum chemistry calculation, and according to the results, theory predicting and proof testing of a benzene nitrile (2-benzo butyl nitrile) are made.

利用Hansch关系的研究结果表明，苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀效率，可用苯腈类化合物氰基氮原子的净电荷密度和分子最高占据轨道能量或分子最低空轨道能量构成的表达式表达。量子化学计算研究结果表明：1、苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀机理可能是：苯腈类化合物分子以其氰基氮原子上的电子提供给铁的3d空轨道，形成配位键；同时铁的3d轨道上的电子提供给苯腈类化合物分子的能量最低空轨道，形成&反馈键&。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。