毒死蜱及其防治白蚁效果与应用研究进展综述

The present pater talked about the high effect of preventing termite by Chlopyrifos in comparing with some other termiticides. A normal preparing route and some new technologies of pretecting from termite were also discussed.     

Does mercury interact with the inhibitory effect of dichlorvos on Palaemon serratus (Crustacea: Decapoda) cholinesterase?

Mercury is one of the most hazardous metals that may contaminate estuarine ecosystems and induce toxic effects on wildlife organisms. It has been suggested that impairment of cholinesterase (ChE) activity may be involved in the resulting mercury toxicity. Following Palaemon serratus exposure to mercury chloride (HgCl₂), no effect on ChE activity was observed whatever the concentration used (to 37.5 µM) or the time of exposure (to 7 days). By contrast, following 24 h exposure to dichlorvos, an organophosphate insecticide with a well-characterised anti-ChE action, decrease of ChE activity was observed until 30 to 40% basal activity, which seems to be the minimum activity required for prawn survival. In addition, HgCl₂ does not affect dichlorvos toxicity and treatments with a mixture of both compounds can be interpreted as the sum of the two independent toxicities. Therefore, mercury and insecticide toxicities are independent and ChE activity from P. serratus eyes seems to be a reliable and sensitive biomarker for organophosphate insecticides even when organisms are simultaneously exposed to mercury.     

新升本科院校园林专业实践改革的研究

就2000年各高等院校扩招后,新升本科院校园林专业生源质量明显下降、参差不齐且专业实践教学建设跟不上,给教学质量的保证带来了许多新的问题的背景下,提出了新的实践教学改革思路,并通过多年的实践证明,该思路行之有效。     

杀虫剂氯辛硫磷的合成

以邻氯甲苯为原料,经氯化、氰化、成肟和磷酰化反应,制得氯辛硫磷。     

国外杀虫剂开发进展

按作用方式的类别简要介绍了近年开发的一些重要杀虫剂。含氮杂环化合物是新杀虫剂发展的热点。     

吡虫啉抗性产生的可能与治理

叙述了氟代烟碱类杀虫剂吡虫啉及其具有相同作用机制的杀虫剂抗性产生的可能与事实,并提出了可能的治理准则。     

Resveratrol: a review of plant sources,synthesis, stability,modification and food application

Resveratrol, a stilbene molecule belonging to the polyphenol family, is usually extracted from a great many natural plants. The technologies of preparation and extraction methods are developing rapidly. As resveratrol has many beneficial properties, it has been widely utilized in food and medicine industry. In terms of its structure, it is susceptible to degradation and can undergo chemical changes during food processing. Different studies have therefore given more attention to various aspects of resveratrol, including anti-aging, anti-oxidant, and anti-cancer activity. This review classifies the study of resveratrol, considers plant sources, synthesis, stability, common reactions, and food applications, and provides references to boost its food and medical utilization. © 2019 Society of Chemical Industry     

几种杀虫剂对平菇中菇蝇抑制作用的研究

目的 通过田间试验评价5种杀虫剂对菇蝇的药效及其对平菇生长的安全性。方法 在菇房条件下研究5种农药对菇蝇的防治效果, 并分析施药后不同时间平菇中的农药残留。结果 25%噻虫嗪, 25%吡蚜酮和25%吡蚜酮+25%噻虫嗪具有很好的防治效果, 而且使用后对平菇产量没有影响。50%的多菌灵, 50%的灭蝇胺的防治效果较差, 且对平菇的产量有影响。25%噻虫嗪, 25%吡蚜酮和25%吡蚜酮+25%噻虫嗪混合液使用 7 d后3种处理均未检测到农药残留。50%的多菌灵, 50%的灭蝇胺药后10 d仍能检测到残留。结论 噻虫嗪和吡蚜酮适宜作为菇蝇害虫的防治药剂, 对平菇影响小, 低残留等特点, 对菇蝇防治效果较好。     

3-烃基-4-苯基双环硫（氧）化磷酸酯的合成研究

研究双环硫化磷酸酯类化合物在大鼠及家蝇神经节结合部位有抗GABA（γ-氨基丁酸）作用,并对其进行了放射性配体与大鼠及家蝇GABA受体的结合活性测定,研究其抑制活性和生物选择性. 以2-苯基丙二酸二乙酯为原料,经酰化、还原及环合3步反应得到10个3-烃基-4-苯基双环笼状磷酸酯类化合物,所有化合物均通过1H NMR和MS进行了结构确认,采用放射性配体—受体结合试验,测定了10个化合物抑制［3H］EBOB（4’-乙炔基-4-正丙基原苯甲酸酯）与家蝇及大鼠GABA受体的结合活性,结果表明部分化合物在10-5 mol/L具有较好的抑制活性,且在大鼠与家蝇GABA受体之间有一定的选择性.