Influence of supercritical carbon dioxide extraction of pyrethrins by using ultrasound;
超声场对超临界CO_2萃取除虫菊酯的影响
Preliminary study on the effect of ultrasound on supercritical carbon dioxide extraction of pyrethrins;
超声场强化超临界CO_2萃取除虫菊酯的初步研究
Separation and Purification of Natural Pyrethrins by Reversed Phase High Performance Liquid Chromatography;
反相高效液相色谱分离纯化天然除虫菊酯
Efficacy of pyrethrin aerosol against mosquitoes and flies;
除虫菊素杀虫气雾剂对蚊蝇的药效研究
Chromatographic techniques used in the sepration, preparation, structural comfirmation and determination of pyrethrin, cinerin, jasmolin, pyrethrin, cinerin and jasmolin are mainly TLCGCHPLC and GC-MS.
总结了TLC、GC、HPLC和GC-MS联用等现代色谱技术在除虫菊素各有效组分的分离、制备、结构鉴定和含量测定中的应用。
The variety selection was also conducted by yield determination, pyrethrin content analysis and pesticide controlling experiment.
为了获取适宜在云南推广的高含量除虫菊素优良品种,从国外引进的8份除虫菊(PyrethrumcinerariaefoliumTrev)种质材料中,经组培快繁后,在云南省昆明、曲靖、楚雄、大理等地开展了组培苗的种植与品种选育研究,并经产量测定、含量分析和药效试验。
Study on extraction of pyrethrin by compressed CO_2;
压缩态CO_2萃取除虫菊酯的初步研究
Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.
采用超临界二氧化碳萃取除虫菊花中的有效成分除虫菊酯,设计了一个突然降压的过程,使除虫菊花的细胞壁破碎,减少过程的传质阻力。
Compared with Soxhlet method and supercritical carbon dioxide extraction, microwave extraction of pyrethrins is a rapid method (about 200 s) with less solvent consumption (about 240 mL), higher yield and better product with light color.
对微波萃取、索氏提取和超临界二氧化碳萃取除虫菊酯的效果进行了比较 ,结果表明微波萃取法具有萃取时间短 (约 2 0 0 s) ,提取率高 ,溶剂用量少 (约 2 4 0 m L) ,产物品质好 ,色泽浅等优点。
Control Effect of 2.5% Pyrethrins EC on Myzus persicae (Sulzer) in Tobacco Field;
2.5%除虫菊素乳油防治烟蚜田间药效试验
Extracted pyrethrins from pyrethrum dried flower by super critical CO2 .
用超临界CO2从除虫菊干花中萃取的除虫菊素,这种膏状物不能直接用来加工或深加工杀虫产品。
Application of microwave aid technique in the extraction of pyrethrins from the natural pyrethrum flower s was studied.
根据天然除虫菊花的生物化学特性,应用微波协助萃取技术来萃取天然植物除虫菊花中的菊素,在遵循不破坏除虫菊素中杀虫活性的前提下,选择适当的微波波长、萃取溶剂、溶剂用量、溶剂的pH值、微波计量、物料水分、温度、时间等因素控制得当,萃取效果十分明显;实践表明:采用此工艺,具有快速安全、简化工艺、节省能源、降低溶剂用量、降低成本、改善环境条件、提高产品纯度、减少装备投资等特点。
Supercritical carbon dioxide was used to extract pyrethrin from pyrethrum flowers.
采用超临界二氧化碳萃取除虫菊花中的有效成分除虫菊酯,设计了一个突然降压的过程,使除虫菊花的细胞壁破碎,减少过程的传质阻力。
Extraction of active constit ue nts from pyrethrum by supercritical CO_2 at different conditions of pressure?t emperture to estimate the yield and quality,and the relation of CO_2 outflow an d contact time.
采用超临界CO2 萃取除虫菊中有效成分除虫菊酯。
Microwave extraction of the dry flower of pyrethrum, using a reconstructed home microwave oven as main equipment, is studied in this paper.
本研究使用经改造的家用微波炉作为主要设备，对微波萃取除虫菊干花做了 Ｌ_9(3～４)正交实验。
The Synthesis of Pesticide on Non Imitative Pyrethrum Ester;
不含菊酸类拟除虫菊酯化合物的合成
EFFECTS OF PYRETHROIDS ON THE STRUCTURES OF RED BLOOD CELLS
拟除虫菊酯对人红细胞膜结构的影响
Study on Extraction of Pyrethrin from Pyrethrum by Supercritical CO_2;
超临界CO_2萃取除虫菊酯的研究
In Vitro Study on Cytotoxic Effects of the Pyrethroid Insecticide of Cypermethrin and Fenvalerate on the Gill Cell Line FG of the Flounder (Paralichihys Olivaceus);
拟除虫菊酯类杀虫剂氯氰菊酯和氰戊菊酯对牙鲆鳃细胞系FG的细胞毒性研究
Sublethal Effects of Selected Pyrethriods on the Cotton Bollworm Helicoverpa Armigera;
几种拟除虫菊酯对棉铃虫亚致死效应研究
Clinical Analysis on 56 Patients with Acute Pyrethroid
拟除虫菊酯类杀虫药急性中毒56例临床分析
Study on Enzyme-Linked Immunosorbent Assay and Removing Techniques for Pyrethroids Residue;
拟除虫菊酯类农药残留ELISA检测及消解去除研究
A synthetic clear or amber - colored viscous insecticide, C19H26O3, similar to pyrethrin.
丙烯除虫菊酯一种合成的透明或琥珀色粘性杀虫剂，C19H26O3，与除虫菊酯相似
YESTERDAY,TODAY AND TOMORROW OF PYRETHRUM INDUSTRY IN CHINA
中国天然除虫菊酯农药产业的过去、现在和将来
The water as cosolvent could enhance extraction efficiency.
以水作夹带剂可以提高除虫菊酯萃取效率.
The Study of Chinese Herbal Medicine to Interfere Toxicity on Reproduction Correlating with Pyrethroid;
拟除虫菊酯生殖毒性及中药干预作用的研究
The Research and Development on Pyrethroids Emulsion, Oil in Water;
拟除虫菊酯类农药水乳剂的研制与开发
Isolation and the Basic Relative Study on Biochemical, Molecular Biology of Pyrethroid-degrading Strain;
拟除虫菊酯降解菌株分离及生化分子基础研究
Study on Improvement of Supercritical Carbon Dioxide Extraction of Pyrethrins by Using Ultrasound;
超声强化超临界CO_2萃取除虫菊酯的研究
Safety Evaluation of Pyrethroid to Carp;
拟除虫菊酯类农药对鱼类的安全性评价研究
Study on Forensic Toxicokinetics of Pyrethroids;
拟除虫菊酯类农药法医毒物动力学研究（一）
Theoretical Study on the Degradation Mechanism of Pyrethroids;
拟除虫菊酯类农药降解机理的理论研究
Study on the Reproductive Toxicity of Ⅱ-parathyroid in Male Mice;
Ⅱ型拟除虫菊酯对雄性小鼠生殖毒性作用