3种杀虫剂单剂及其混配对茴香薄翅野螟幼虫的毒力测定

为了明确3种常用农药及其混配对茴香薄翅野螟幼虫的毒力。采用胃毒法,室内测定3种农药的LC_(50)及3种混配药剂的共毒系数。结果表明:在处理24 h之后,阿维菌素+高效氯氰菊酯(0.31+0.74)mg/L和阿维菌素+毒死蜱(0.31+0.42)mg/L两个配比对茴香薄翅野螟幼虫的毒力均呈现出增效作用,共毒系数分别为302.34和441.73,其中阿维菌素+毒死蜱的配比增效作用最大。高效氯氰菊酯+毒死蜱(0.74+0.42)mg/L配比对茴香薄翅膀野螟的毒力呈现拮抗作用,共毒系数仅为1.19。在处理48 h之后,阿维菌素+高效氯氰菊酯、阿维菌素+毒死蜱和高效氯氰菊酯+毒死蜱3个配比对茴香薄翅野螟幼虫的毒力均呈现出增效作用,共毒系数分别为644.08,155.21和239.58,其中阿维菌素+高效氯氰菊酯配比增效作用最大,说明这两种药剂混配在生产中防治该虫效果较好值得推广。     

提高苏云金芽孢杆菌制剂杀虫效果的策略

苏云金芽孢杆菌制剂是一种主要的生物杀虫剂 ,本文从培育高效菌株、增加昆虫对 Bt的摄入量、化学杀虫剂促进 Bt的杀虫作用、植物次生物质的增效作用、Bt与其杀虫微生物及其代谢产物的协同作用、简单化合物提高 Bt的毒力以及保护 Bt免受紫外光的损伤等方面提高 Bt制剂的杀虫活性进行了论述。     

海洋来源的苏云金芽孢杆菌h3菌株和昆虫幼虫来源的Ly30对鳞翅目小菜蛾、双翅目家蝇和淡色库蚊、鞘翅目德国小蠊的毒性（英文）

为发现和验证杀虫剂苏云金杆菌(Bt)菌株对目标种类的害虫的毒性,本文用两株菌种(h3和Ly30)对小菜蛾(鳞翅目)、淡色库蚊和家蝇(双翅目)和德国小蠊(鞘翅目)几种害虫进行了毒力检测.其中,菌株h3来源于连云港海水,具有高盐耐受的优点;菌株Ly30分离自连云港市云台山赤松林区自然死亡的膜翅目昆虫日本弓背蚁幼虫体内.杀虫活性实验显示,菌株h3和Ly30具有高效杀虫活力,对小菜蛾(鳞翅目)、淡色库蚊和家蝇(双翅目) 3 d～5 d致死率可达99%～100%,对德国小蠊(鞘翅目) 5 d致死率仅达30%. Bt菌株h3和Ly30对鳞翅目和双翅目害虫的强力杀虫活性及对鞘翅目害虫的毒力,不仅为其在农业、林业领域及公共卫生等方面的应用提供了理论支持.同时也拓展了Bt菌株毒杀害虫种类的研究.此外,具有高盐耐受优势的菌株h3不仅扩大了Bt生物杀虫剂的应用领域,也有利于增加适用对象,提高杀虫功效.     

结构不对称杀虫剂丙硫磷复配制剂的研制与应用

测定不同配比的氟氰菊酯与丙硫磷复配制剂（简称氯丙制剂）对褐棘蛾和马尾松毛虫幼虫的触杀毒力、共毒系数和增效配比,加工成不同比例的氯丙复合乳油,对两种供试昆虫进行了防治效果检验。结果表明,以有效成分间１：７的比例配制的氯丙复剂增效明显,成本较低,具有较理想的防治效果。     

高渗酮增效农药制剂对棉铃虫幼虫室内杀伤力试验研究

:用高渗酮增效的四种不同的高渗农药制剂在室内对棉铃虫幼虫的杀伤力进行了试验。结果表明 :高渗酮对农药具有显著的增效作用 ,加有高渗酮的农药可使用药量减少 5 0 %以上 ,而对棉铃虫幼虫的杀灭率明显提高。另外也表明 :高渗酮在农药增效方面优于氮酮产品     

小菜蛾对定虫隆的抗性选育和增效剂的作用

用定虫隆对小菜蛾进行抗性选育,结果表明:F1~5仍属敏感状态,F6的敏感性已下降,F7~10达到低水平抗性,F11~13达中等水平抗性。从F14开始停止汰选,无毒饲养到F20,具有明显的抗性衰退现象。以对定虫隆具有不同抗性水平的小菜蛾种群测定3种增效剂对定虫隆的增效作用,结果表明:对F0代,TPP对定虫隆是负增效作用或几乎没有增效作用,SV 1和PBO对定虫隆均有一定的增效作用;对F13代和F20代,3种增效剂均有增效作用,但以SV 1和PBO的增效作用更明显,最高增效倍数分别为24.26和13.79;增效剂的比例不同,增效的幅度也不同,质量比为5∶1的混配增效作用比3∶1的更明显,增效倍数随小菜蛾对定虫隆抗性水平的提高而增加。     

环境因子组合对甲氰·阿维杀螨活性的影响

通过测定不同环境因子组合下甲氰·阿维对朱砂叶螨的毒力效应,确定环境因子对药剂毒力及增效作用的影响.结果表明:温度是影响单剂及复配剂毒力的主导因子,阿维菌素和甲氰·阿维复配剂的毒力呈正温度效应,甲氰菊酯的毒力呈负温度效应;复配剂的增效作用在不同环境因子组合中变化不大,常规条件下筛选的最佳配比的复配剂甲氰.阿维Ⅱ在本实验中的不同环境组合下,仍然为最佳配比.     

食品胶及电解质对琼胶凝胶性能的影响

本文优化选择出与琼脂有协同增效作用的三种电解质：氯化钾、六偏磷酸钠、磷酸二氢钾及多种食品胶，并在确定其他食品胶与琼脂最佳配比的基础上，在这些溶液中分别加入不同浓度和种类的电解质，测定了其各项性能参数。     

黄连等7种中草药提取液对脚部真菌杀菌作用研究

采用加热回流—超声波提取法及35%的酒精萃取法提取黄连、黄芩、黄柏、花椒、甘菊、甘草、蒲公英等7种中草药活性成分,用菌落计数法测定其对深、浅部真菌的杀菌作用.结果表明,这7种中草药对深、浅部真菌均有一定的杀灭作用,其中以黄连、黄芩、黄柏最为明显,抑菌率均在69.5%以上;杀菌试验表明不同中草药对深、浅部真菌有不同程度的杀灭作用.且对浅部杀菌作用高于深部,并随着提取液用量的增加,杀菌率均随之提高.     

甲氰菊酯与单甲脒复配对桔全爪螨Pnonychus citri的增效作用研究

将甲氰菊酯和单甲脒通过复配对桔全爪螨进行室内毒力测定,表明两种药剂的各种配比均对桔全爪螨存在着不同程度的增效作用,其中以甲氰菊酯与单甲脒按1:4的比例复配增效作用最为明显,共毒系数达到373。田间药效试验也表明,20％的混剂乳油(4％甲氰菊酯 16％单甲脒)的药效明显高于20％的甲氰菊酯乳油和25％的单甲脒乳油。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

A computer generator for randomly layered structures

AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.