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insecticidal activity     
相关语句
  杀虫活性
     The experiments of insecticidal activity show that the β-Sitosterol derivatives (2a) have the best effect in killing insects and its lowest concentration in alcohol is ρ(2a)= 5.0×10~(-5) g/mL.
     杀虫活性试验表明,β-谷甾醇衍生物(2a)具有显著杀虫活性,其在乙醇溶液的最低浓度为ρ(2a)=5.0×10-5g/mL.
短句来源
     Synthesis of 5-oximino-5-deoxyavermectin B_1 and its insecticidal activity
     5-羟亚氨基-5-脱氧阿维霉菌素B_1的合成及杀虫活性研究
短句来源
     2) The insecticidal toxin gene fragments cb6Al, cb33Al, cb43A\ and cb54A1 were gained and showed strong homology from Xenorhabdus strains CB6, CB33, CB43 and CB54 that showed different insecticidal activity.
     2)利用特异引物从杀虫活性不同的4个菌株CB6、CB33、CB43和CB54中扩增到杀虫基因片断cb6A1、cb33A1、cb43A1和cb54A1,它们的核苷酸序列具有高度的同源性。
短句来源
     Construction, Expression of PTD-Cry1Ac Vectors and Insecticidal Activity of the Expressed Fusion Proteins
     PTD-Cry1Ac载体的构建表达及杀虫活性研究
短句来源
     Synthesis and Insecticidal Activity of N-(N-t-Butylarylacylamino) Phthalimide
     N-(N-叔丁基芳酰氨基)邻苯二甲酰亚胺的合成及其杀虫活性
短句来源
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  杀虫作用
     In recent years,the savin plant has been found with excellent insecticidal activity.
     近年来,中国还发现该植物是一种优秀的杀虫植物,并对其杀虫作用进行了较为系统的研究。
短句来源
     Studies on Insecticidal Activity of Terpinen-4-OL
     松油烯-4-醇杀虫作用研究
短句来源
     Insecticidal activity of wild Meliaceae plant extracts from Guangxi on the Lipaphis erysimi Kaltenbach
     广西野生楝科植物提取物对萝卜蚜的杀虫作用初步研究
短句来源
     Studies on insecticidal activity and toxic component of essential oil from Pogostemon cablin
     广藿香精油的杀虫作用及其活性成分分析
短句来源
     The fungistasis and insecticidal activity of the alkaloid extracts from Peganum multisectum Bobr. on 8 plant pathogenic fungi and 2 aphids were studied by the methods of growth rate and soak foliage.
     采用生长速率法和浸叶法研究多裂骆驼蓬中生物碱类物质对8种植物病原真菌和2种蚜虫的抑菌杀虫作用
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  “insecticidal activity”译为未确定词的双语例句
     The preliminary biological test shows that compounds Ⅲb(R 1=Cl,R 2= n C 5H 11 )、Ⅲd(R 1=CH 3,R 2= n C 5H 11 )、Ⅲf(R 1=2,6 difluoro,R 2= n C 5H 11 ) exhibit good insecticidal activity against Culex pippens pallens at 10 mg/L with more than 90% mortality.
     化合物Ⅲb(R1=Cl,R2 =n C5H11)、Ⅲd(R1=CH3 ,R2=n C5H11)、Ⅲf(R1=2 ,6 difluoro ,R2 =n C5H11)在 1 0mg L浓度下对淡色库蚊幼虫的杀虫死亡率大于90 %。
短句来源
     Study on Insecticidal Activity of Xenorhabdus Nematophila HB310-59 Strain
     嗜线虫致病杆菌Xenorhabdus nematophila HB310-59菌株杀虫活性的研究
短句来源
     Results of the insecticidal activity results are as follows: For the population collected from the field, LC_(50) of pET-T1AC(T)with TAT was 60.20 μg/ml, LC_(50) of pET-T1AC(P) was 80.82 μg/ml, and the synergism radio was 1.34-fold;
     生测实验结果如下:对小菜蛾室内种群,加TAT肽的融合蛋白pET-T1AC(T)的LC_(50)为60.20μg/ml,而pET-1AC(P)蛋白LC_(50)为80.82μg/ml,增效倍数为1.34倍;
短句来源
     Efficient expression of the Cry1Ac gene in the engineered JAAS01D_1Ac was proved with restriction enzyme analysis, SDS_PAGE electrophoresis analysis and insecticidal activity assay.
     工程菌株质粒酶切电泳分析、SDS_PAGE电泳分析和杀虫生物活性测定结果证实了Cry1Ac基因的导入及其在枯草芽孢杆菌JAAS01D中的有效表达。
短句来源
     To investigate the influence of crystal protein Cyt1A on Vip3A expression and its insecticidal activity, the recombinant plasmid pHVC20 containing cyt1A and vip3A genes were constructed and transformed into the Bacillus thuringiensis acrystalliferous strain CryB, with CryB (pHPT3) strain only expressing Vip3A protein as control.
     为检测苏云金杆菌晶体蛋白Cyt1A对Vip3A表达和杀虫活性的影响,将p20和cyt1A基因与vip3A基因连接构建了重组质粒pHVC20,然后电激转化至苏云金杆菌无晶体突变株CryB中进行了共表达,以单独表达Vip3A蛋白的CryB(pHPT3)作为对照菌株。
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  insecticidal activity
The Insecticidal Activity of Bacillus thuringiensisCells
      
Some of the compounds were tested for insecticidal activity.
      
Insecticidal activity of the compounds obtained was evaluated.
      
armigera) show that the transgenic tobacco plants have a high insecticidal activity.
      
The results showed that the highest insecticidal activity was obtained by bacterial isolates at 1.8 × 109 bacteria/mL dose, within ten days on the larvae of A.
      
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The prcscnt communication deals with the preparation of potasan and four of its analogs. The preliminary biological screening test shows that compounds II and III exhibit fairly high insecticidal activity against cotton aphid.

本文报告四种扑打杀类似物的合成。初步昆虫试验结果说明化合物Ⅱ及Ⅲ对棉蚜的毒效较好。

A number of carbamates useful as insectisides have attracted much attention owing to their marked physiological activity. Both phenyl, naphthyl N,N-dimethylcarbamates as well as their mono- and dichloro-analogues were prepared in the present work in order to study the relationship between chemical constitution and insecticidal activity. Preliminary tests showed that dichloro-phenyl N,N-dimetnylcarbamate possessed strong insecticidal activity against house-flies, naphthyl N,N-dimethylcarbamate displayed...

A number of carbamates useful as insectisides have attracted much attention owing to their marked physiological activity. Both phenyl, naphthyl N,N-dimethylcarbamates as well as their mono- and dichloro-analogues were prepared in the present work in order to study the relationship between chemical constitution and insecticidal activity. Preliminary tests showed that dichloro-phenyl N,N-dimetnylcarbamate possessed strong insecticidal activity against house-flies, naphthyl N,N-dimethylcarbamate displayed strong insecticidal activities both to house-flies and mosquito-larvae whilst monochloronaphthyl N,N-dimethylcarbamate was more active to mosquito-larvae than to house-flies. Toxicity tests against 'mammalians are in progress.

本文合成了N,N-二甲氨基甲酸苯酯、4-氯苯酯、2,4-二氯苯酯、萘酯、4-氯萘酯、2,4-二氯萘酯等6种,并比较其杀虫效力,借以了解芳核上代入氯原子对杀虫作用的影响.对家蝇触杀作用,以苯核上代入2个氯原子的效果较好,萘核上代入氯原子对家蝇的触杀作用有所降低,而其一氯取代物对蚊蚴的浸杀效力略有增强.

In 1975 we prepared 1-(3, 4-dichlorophenyl)-2, 2, 2-trichloroethyl acetate (laboratory code 7504) as a DDT substitute. Its insecticidal activity, toxicity to mammals and fishes and biodegradability were determined and compared with those of DDT. Its LD50 and KT50 to houseflies (Musca domestica vicina Macq) were found to be 4.89-5.89 μg/fly and 23 minutes 44 seconds in contrast to 50 μg/fly and 60 minutes for DDT respectively. A 60 day residual test in the laboratory for both compounds showed the KT50 was...

In 1975 we prepared 1-(3, 4-dichlorophenyl)-2, 2, 2-trichloroethyl acetate (laboratory code 7504) as a DDT substitute. Its insecticidal activity, toxicity to mammals and fishes and biodegradability were determined and compared with those of DDT. Its LD50 and KT50 to houseflies (Musca domestica vicina Macq) were found to be 4.89-5.89 μg/fly and 23 minutes 44 seconds in contrast to 50 μg/fly and 60 minutes for DDT respectively. A 60 day residual test in the laboratory for both compounds showed the KT50 was 48 minutes 26 seconds for 7504 and 96 minutes 5 seconds for DDT.During July to August in 1977 large scale tests were carried out in the living quarters and cattle sheds in Peking and Beidaho, Hopei. The insecticidal effect of 7504 at 2 grams per square meter lasted about one month and was somewhat better than DDT at the same condition.The accumulation of 7504 in chickens was determined and compared with that of DDT. The diet containing 7504 or DDT each in 100 ppm was fed randomly to chickens for 15 days. No 7504 was found in the chicken's body as a whole while a 495.5 ppm level was found for DDT. When 7504 in the diet was increased to 1000 ppm only a trace of this compound was found in the thoracic muscle and liver, none in the fat, and 167 ppm in the feces after 15 days' feeding.When 7504 was incubated with chicken liver homogenate at 37CCCC, more than 85% of the compound was degraded after 10 minutes and 97% after 20 minutes. The biological test of SR values of 7504 and DDT with houseflies were 15.8 and 2.2 respectively.

1975年我们合成了DDT的类似物——三氯杀虫酯(代号7504)。室内药效试验结果,对家蝇(Musca domestica vicina macq)的LD_(50)为4.89—5.89微克/头(DDT为50微克/头);用残膜法处理家蝇KT_(30)为23分44秒(DDT为60分)。处理后的残膜室内放置60天,处理家蝇KT_(30)为48分26秒(DDT为95分5秒)。1977年7—8月份进行了扩大药效试验。在住户和畜舍内以2克/米~2药量作滞留喷洒,对蚊、蝇成虫的药效可维持一个月左右。 “7504”在生物体内容易降解。家蝇试验SR值为15.8(DDT为2.2)。以DDT作对比,用含相同药量100ppm的鸡饲料,任其自由取食15天后,分析DDT在鸡体内的累积量为495.5ppm;而“7504”在鸡体内则没有发现。以1000ppm的“7504”喂15天后,在胸肌及肝内仅有微量存在,脂肪内未发现,而粪便内则达167ppm。如用胶囊每天强迫饲喂2克,7天后肝脏内含0.5ppm。脂肪内未发现。粪便内达625ppm。“7504”与鸡肝匀浆,在37℃条件下培育10分钟,可降解85%以上,培育20分钟有97%被降解。

 
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