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直接竞争酶联免疫吸附分析法测定小白菜中溴氰菊酯的残留量
直接竞争酶联免疫吸附分析 高效液相色谱 小白菜 溴氰菊酯 残留
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2016/7/27
应用作者所在实验室自制的、对溴氰菊酯具有特异性亲和力的多克隆抗体和酶标半抗原,建立了包被抗体-酶标半抗原直接竞争酶联免疫吸附分析法(DC-ELISA)。小白菜样品经超声提取、浓缩和10%甲醇定容后采用DC-ELISA法测定,并采用高效液相色谱法进行验证。结果表明:在抗体包被浓度为2.0 mg/L、辣根过氧化物酶(HRP)标记溴氰菊酯半抗原稀释2.0×105倍、包被介质为pH 7.2 PB、反应介质...
Bacillus pumilus – a new phytopathogen of Scots pine
Pinus sylvestris bacteriosis phytopathogenic bacteria soft rot
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2015/5/6
Large bleeding lesions on stem and branches of pine trees, wet black spots and depressed cancer wounds of different sizes at the base of knots, dying off the bark around knots and sapwood exposure ove...
Chemically Modified Chitosans as Antimicrobial Agents against Some Plant Pathogenic Bacteria and Fungi
chemically modified chitosans antibacterial activity
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2015/3/5
The antimicrobial activity of eight chemically modified chitosans against plant pathogenic bacteria of crown gall
disease agrobacterium tumefaciens and soft mould disease Erwinia carotovora and fung...
New Findings and Vegetative Compatibility Groups of Cryphonectria parasitica (Murrill) M. E. Barr in the Czech Republic
chestnut blight Cryphonectria parasitica
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2015/3/5
This study provides new information on the distribution of the chestnut blight agent Cryphonectria parasitica
and its vegetative compatibility groups (VCGs) in the Czech Republic. This study has rev...
The importance of monitoring the Ceutorhynchus pallidactylus female flight activity for the timing of insecticidal treatment
Ceutorhynchus pallidactylus cabbage stem weevil winter oil-seed rape alpha-cypermethrin etofenprox chlorpyrifos + cypermethrin insecticidal effect
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2015/3/3
The effects of two pyrethroids and one combination of organophosphate and pyrethroid (alpha-cypermethrin, etofenprox, chlorpyrifos + cypermethrin) on Ceutorhynchus pallidactylus (Marsham, 1802) (Coleo...
Effectiveness of some botanical insecticides against Spodoptera littoralis Boisduvala (Lepidoptera: Noctudiae), Myzus persicae Sulzer (Hemiptera: Aphididae) and Tetranychus urticae Koch (Acari: Tetranychidae)
Spodoptera littoralis Myzus persicae Tetranychus urticae botanical insecticides Azadirachta indica Chrysanthemum cinerariifolium Pongamia glabra
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2015/3/3
Biological efficiency of botanical insecticides was determined that were obtained from Pongamia glabra, Azadirachta indica and Chrysanthemum cinerariifolium against Spodoptera littoralis, Myzus persic...
Effect of Bio-rational Insecticides on Some Biological Aspects of the Egyptian Cotton Leafworm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae)
bio-rational insecticides Spodoptera littoralis
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2015/3/2
The bio-rational insecticides Dipel 2x, BioFly, Agrin, BioGuard, Spinosad, Neemix, Mectin and Match were
tested for their effect on 1st, 3rd and 5th instar larvae and egg masses (24, 48 and 72 h old...
The sensitivity of flower bud thrips, Megalurothrips sjostedti Trybom (Thysanoptera: Thripidae), on cowpea to three concentrations and spraying schedules of Piper guineense Schum. & Thonn. extracts
control of Megalurothrips sjostedti extracts of Piper guineense Vigna unguiculata application Schedule
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2015/2/6
The extracts of pods of West African black pepper, Piper guineense, at 5, 10 and 20% (w/v), were applied at two, four and six weekly schedules to control the legume flower bud thrips, Megalurothrips s...
Control of target spot of tomato with fungicides, systemic acquired resistance activators, and a biocontrol agent
target spot Corynespora cassiicola tomato Lycopersicon esculentum biocontrol agents systemic acquired resistance fungicides
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2015/1/28
Control of target spot of tomato, caused by the fungus Corynespora cassiicola (Berk. & Curt.) Wei., was studied in three seasons in southern Florida, USA. The strobilurin fungicide azoxystrobin and a ...
乳状液被广泛应用于食品、石油、化妆品和农用化学品等领域,稳定性是影响其使用寿命和功能发挥的关键因素。因此,快速、准确地表征乳状液的稳定性一直被人们所关注。农药水乳剂是以乳状液为基础的农药剂型之一,具有高效、低毒和环保等优点。文章简要介绍了乳状液在食品和石油等领域的应用及研究现状,重点综述了液滴粒径及其分布测定、电导率测定、微观结构研究、拟三元相图研究和液滴表面电动性能研究等表征乳状液制备与使用过程...
为明确醚菌酯和腐霉利在温室条件下在草莓中的残留行为及其可能产生的膳食摄入风险,于2012—2013年在北京的日光温室进行了醚菌酯和腐霉利喷施草莓的3次田间农药残留试验,建立了一种快速、简便的气相色谱-质谱联用检测草莓果实中农药残留量的方法,并对不同人群的膳食暴露及风险进行了评估。草莓样品经乙腈提取,PSA(乙二胺-N-丙基硅烷)净化,采用气相色谱分离,四极杆质谱检测,外标法定量。结果表明:醚菌酯和...
采用光学视频接触角测量仪测定了苹果叶片的表面自由能,以及2.5%高效氟氯氰菊酯水乳剂(beta-cyfluthrin EW)稀释液的表面张力及静态接触角、0～60 s动态接触角。结果表明:苹果叶片近轴面的表面自由能为52.76 mJ/m2,以极性分量为主导;而远轴面的表面自由能为21.79 mJ/m2,且以色散力分量(非极性分量)为主导。高效氟氯氰菊酯水乳剂2 000倍稀释液的表面张力为52.45...
嘧菌酯在水和有机溶剂中的光化学降解
嘧菌酯 光化学降解 光敏化作用 光淬灭作用
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2016/3/21
以500 W氙灯为光源，研究了嘧菌酯在水和有机溶剂中的光化学降解动态及其影响因素。结果表明：当质量浓度为5 mg/L时，嘧菌酯在纯水中光解的半衰期为5.8 h，在2~20 mg/L范围内，其光解速率随初始质量浓度的增大而降低；嘧菌酯在不同介质中的光解速率从大到小依次为乙腈 >水 >甲醇 >正己烷 >丙酮，其半衰期分别为4.8、5.8、11.5、12.1和23.5 h；硝酸盐对嘧菌酯在水中的光解具有...