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表皮穿透
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  cuticular penetration
     After 8? h treatment the results indicate that the rate of cuticular penetration of 14C-lambda-cyhalothrin in 5th instar larvae of the resistant strain was only about 55.5% of that in the susceptible strain.
     用1 4 C标记氯氟氰菊酯测定甜菜夜蛾抗性和敏感品系 5龄幼虫表皮穿透率结果表明 ,处理后 8h ,抗性品系 5龄幼虫的表皮穿透率仅为敏感品系幼虫表皮穿透率的 5 5 5 %。
短句来源
     The Application of HPLC to Insecticide Cuticular Penetration Studies
     HPLC在杀虫剂表皮穿透研究中的应用
短句来源
     The results indicated that HPLC might apply to insecticide cuticular penetration studies.
     结果表明HPLC可适用于杀虫剂表皮穿透研究。
短句来源
     Cuticular penetration and desensitivity of GABA_A receptor in abamectin resistant Plutella xylostella L.
     表皮穿透和GABA_A受体不敏感性在小菜蛾对阿维菌素抗性中的作用
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     The rate of cuticular Penetration of 14C-fenvalerate in the 3rd instar larvae was higher in the susceptible strain than in the resistant strain (Rd).
     用14C-氰戊菊酯进行的表皮穿透研究表明,氰戊菊脂在抗性品系和敏感品系的表皮穿透速率上存在差异,表皮穿透速率降低是棉铃虫对氰戊菊酯产生抗性的一个因子。
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  “表皮穿透”译为未确定词的双语例句
     Resistance to cyhalothrin in beet armyworm, Spodoptera exigua, collected from Jiangpu County, Nanjing, Jiangsu Province was determined by three bioassay methods.
     用~(14)C标记功夫菊酯测定甜菜夜蛾抗性和敏感品系5龄幼虫表皮穿透率结果表明,处理后1小时,抗性晶系的表皮穿透率与敏感品系之间差异不显著;
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     The penetrating rate of SV1 + Dipterex (in mixture) was higher than that of Dipterex. The penetration reduction in resistant houseflies may be an important factor in bringing forth resistance. The increase of the penetrating rate of Dipterex and the decrease of its metabolic rate are regarded as the important mechanisms of SV1 synergism to Dipterex.
     SV_1与敌百虫混用后,穿透速率明显提高,敌百虫对家蝇表皮穿透速率的增强和体内代谢速度的降低是SV_1在抗性家蝇体内对敌百虫增效的机制之一.
短句来源
     Morever, 94. 5% of applied dose for the mixture had penetrated into bollworm cuticle at 10 h after application, compared to only 94% of the theoretical penetration value at 24 h after application.
     复配剂的表皮穿透速率明显提高,处理后10h实际表皮穿透率(94.5%)已相当于其处理后24h理论表皮穿透率(94.0%).
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  相似匹配句对
     The Application of HPLC to Insecticide Cuticular Penetration Studies
     HPLC在杀虫剂表皮穿透研究中的应用
短句来源
     Surface of Architecture
     建筑的表皮
短句来源
     The results indicated that HPLC might apply to insecticide cuticular penetration studies.
     结果表明HPLC可适用于杀虫剂表皮穿透研究。
短句来源
     The Penetration of X-Rays
     X射线的穿透深度
短句来源
     THE EPIDERMAL CELLS OF TEA LEAVES
     茶叶的表皮细胞
短句来源
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  cuticular penetration
urticae, the transovarial ovicidal activity was used as an indicator for cuticular penetration.
      
These results were used to derive an equation which predicts rates of cuticular penetration on the basis of k*0, the average size selectivity of 9.5?×?10-3?mol?·?mL-1 and the driving forces of penetration.
      
Rates of cuticular penetration of 1-naphthylacetic acid (NAA) as affected by adjuvants, temperature, humidity and water quality
      
If NAA was dissolved in deionised water about 40% ofthe applied dose penetrated in 8 h, while water having a pH >amp;gt; 7 practicallyeliminated cuticular penetration of NAA, even at high humidity (100%) andmoderate temperatures (20°C).
      
Cuticular penetration of potassium salts: Effects of humidity, anions, and temperature
      
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  cuticle penetration
No differences in spore germination, appressorial formation, or cuticle penetration were detected between susceptible and resistant leaves inoculated with spores of the pathogen.
      
After cuticle penetration by the pathogen, the hyphae were observed at lower frequency in epidermal pectin layers and middle lamellae of leaves of the three resistant plants than in those of susceptible ones.
      
Such analysis is important for the elucidation of the roles of these enzymes during infection and cuticle penetration.
      
Use spray adjuvants that maximize cuticle Use spray adjuvants that maximize cuticle penetration.
      


The authors of the article make a research into the kinetics of inhibiting acetylcholinsterase in vitro of adult rhi zopertha dominia ( F ) and penetrating effect on the skin of adult tribolium castaneum herbsl, tribo-lium confusum du val and larvas of plodia interpunctella Hbu by using Fan Chong Lin, fenitrotnion and enzymatic method, topical application and injection method. It turns out : 10 1 ) the sensitivity of AchE to the pesticide OP varies with the change of biomolecular reaction constant(Ki) or median...

The authors of the article make a research into the kinetics of inhibiting acetylcholinsterase in vitro of adult rhi zopertha dominia ( F ) and penetrating effect on the skin of adult tribolium castaneum herbsl, tribo-lium confusum du val and larvas of plodia interpunctella Hbu by using Fan Chong Lin, fenitrotnion and enzymatic method, topical application and injection method. It turns out : 10 1 ) the sensitivity of AchE to the pesticide OP varies with the change of biomolecular reaction constant(Ki) or median inhibition dose(I50). 2 ) two kinds of pesticides(OP) have different effects on the same species of pests, or the same pesticide has different penetration to the skin of different species. This is seen in the difference of topical application/injection ratio ( ratio TI ) . The faster the penetration speed, the higher the poisonousness. 3 ) pesticide OP produces poisonous effect only when it quickly penetrates the skin of pests, enters their bodies, reaches target enzyme and causes phosphorylation of enzyme.

作者用防虫磷(优质马拉硫磷)、杀螟硫磷、通过酶法、点滴与腹腔注射法,对谷蠹[Rhizopertha dominia(F)]成虫离体乙酰胆碱酯酶(AchE)抑制作用的动力学,和对赤拟谷盗(Tribolium Castaneum Herbst)成虫、杂拟谷盗(Tr-ibolium Confusum du Val)成虫,印度谷螟(Plodia interpunctella Hbn)幼虫表皮的穿透作用分别进行了研究。结果表明:(1)AchE对有机磷(OP)杀虫剂敏感性的变化,表现在双分子反应常数(Ki)或抑制中量(I_(50))的变化:(2)两种OP杀虫剂对同一虫种或同一杀虫剂对不同虫种表皮的穿透性均不相同,反映在点滴/注射比(即TI比率)亦不相同,穿透速率快的,毒性表现较高;(3)OP杀虫剂只有迅速穿透虫体表皮,大量进入虫体,直达靶子酶,使酶磷酰化,才能发生毒效。 防虫磷 杀螟硫磷 乙酰胆碱酯酶 双分子反应常数 磷酰化酶 粮仓害虫

The resistance mechanism of permethrin- and deltainethrin-selected high resistant strains (2C1-R and Dec-R) of the house fly Musca domestica vicina was investigated through bioassay, use of different synergists, in vivo test of cuticular penetration and studies on the activities of detoxification enzymes and ATPase. It was found that the cuticular penetration of permethrin was slower in the two resistant strains than in the normal susceptible strain (NP), and the lag was more conspicuous in the Dec-R strain....

The resistance mechanism of permethrin- and deltainethrin-selected high resistant strains (2C1-R and Dec-R) of the house fly Musca domestica vicina was investigated through bioassay, use of different synergists, in vivo test of cuticular penetration and studies on the activities of detoxification enzymes and ATPase. It was found that the cuticular penetration of permethrin was slower in the two resistant strains than in the normal susceptible strain (NP), and the lag was more conspicuous in the Dec-R strain. The activities of esterases, mixed function oxidases and cytochrome P-450 were higher in the resistant strains. It was discernible that the major resistance mechanism was the MFO-mediated detoxification in the 2C1-R strain and the esterase activity was higher in the Dec-R strain when compared with the NP strain. The Na+-K+-ATPase activity was 46% lower in the Dec-R strain when con-pared with the susceptible strain, but the difference between the 2C1-R and NP strains was not conpicuous. The activity of Mg2+-ATPase was higher in the two resistant strains than in the NP strain. It is proposed that Mg2+-ATPas may be also an important target site for pyrethroid action.

本文对二氯苯醚菊酯和溴氰菊酯分别选择的高抗性家蝇(Musca domestica vicina)品系2Cl-R及Dec-R的抗性机制进行了研究。应用生物测定、增效剂,体内试验的表皮穿透作用、离体条件的解毒酶系活性的增加以及家蝇头部ATP酶活力的研究结果表明,两种拟除虫菊酯高抗性家蝇品系的表皮穿透性均比正常品系NP为慢,特别是Dec-R品系极慢。酯酶和多功能氧化酶及其末端的细胞色素P-450的活性在两个抗性品系中都比NP品系有不同程度的增高,但2Cl-R品系以氧化酶为主,而Dec-R品系似以酯酶占优势。Dec-R品系的Na~+—K~+-ATP酶活力低于NP品系的46%,而2Cl-R品系与NP品系相等。Mg~(2+)-ATP酶活性在两个抗性品系中均高于正常品系。Mg~(2+)-ATP酶可能也是拟除虫菊酯的一个重要靶标部位。

In this paper, author reviewed the advances on resistant mechanisms of insects to insecti- ides, especially to pyrethroid in recent years and presented its potential applications in the fu- ture, in which the insensitivity of the target site to insecticides, the Kdr factor in resistance, the oxidative metabolism, the hydrolysis metabolism of various esterase activities, penetrational efficiency of insecticides through the cuticle, cross-resistance in different type of insecticides, enzyme induction-gene amplication-insect...

In this paper, author reviewed the advances on resistant mechanisms of insects to insecti- ides, especially to pyrethroid in recent years and presented its potential applications in the fu- ture, in which the insensitivity of the target site to insecticides, the Kdr factor in resistance, the oxidative metabolism, the hydrolysis metabolism of various esterase activities, penetrational efficiency of insecticides through the cuticle, cross-resistance in different type of insecticides, enzyme induction-gene amplication-insect resistance to insecticides caused by noninsecticides, suppression of detoxication by synergists, and synergism of insecticide mix- tures are discussed.

害虫对杀虫剂的抗药性机理研究在抗性害虫综合治理中具有重要意义。本文从昆虫的靶标敏感性降低与抗击倒基因、氧化代谢、酯酶水解代谢、表皮穿透作用降低,药剂间的交互抗性机制、混用增效机制以及非杀虫剂诱导的抗性机理等方面,阐述了近年来害虫对菊酯类农药抗性机理的研究进展,并就混剂在抗性治理中的应用等问题进行了讨论。

 
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