生物复合杀虫剂——亲态保对几种重要鳞翅目害虫杀虫活性的研究

通过室内浸叶法和田间药效实验,分别测定了亲态保混剂1号和2号对斜纹夜蛾、二化螟、小菜蛾、三化螟、稻纵卷叶螟等重要鳞翅目害虫的杀虫活性。室内测定共毒系数的结果表明,亲态保1号比单一制剂对斜纹夜蛾、二化螟、小菜蛾有明显的增效作用;田间药效试验结果表明,亲态保防效均高于单一制剂,其中亲态保2号和1号每亩160g剂量对3代三化螟和稻纵卷叶螟的防治效果分别为88.1%和87.1%,防效均在85%以上,高于单一制剂的药效,有较好的推广应用价值。     

铁路调度集中系统实时备份与应急切换技术

分散自律调度集中系统(以下简称CTC系统)是铁路运输的核心信息系统,数据的可靠性保障十分重要.传统方法通过人工定期进行数据库备份,并在出现故障时进行人工恢复,无法保障铁路运输系统的不间断正常运行.本论文基于Oracle Data Guard技术设计实现了CTC系统数据库数据实时备份方案,对主用数据库数据动态自动备份,在备份和恢复过程中对用户完全透明,不影响调度员和车站值班员的正常使用,在占用数据库资源最小的情况下执行备份过程;当主用数据库发生问题或日常进行主备库倒换试验,通过数据库维护人员的简单操作,即可进行数据库业务的应急切换.在实际应用过程中,备用数据库和应急切换机制为缩短CTC的调度指挥中断时间起到了关键作用.     

毛泽东读书史考略

读书贯穿于毛泽东的一生。1918年之前,毛泽东读书广泛涉及中学与西学,为其后续深入研读马克思主义及中国传统文化奠定了坚实的基础。1918年之后,毛泽东一直研读马克思主义及中国传统文化不辍。毛泽东对马克思主义及中国传统文化的认真研读及有机融合使得他最终成为了马克思主义中国化的经典理论作家。     

马来酸酐/苯乙烯电荷转移络合物体系的表面光接枝反应

研究了有氧条件下,以二苯甲酮(BP)为光敏引发剂,马来酸酐(M AH)/苯乙烯(S t)电荷转移络合物(CTC)体系为双单体体系,经紫外光照射,在聚酯(PET)薄膜表面进行的薄液相接枝反应。探讨了光敏引发剂浓度、光照时间以及苯乙烯浓度对接枝效果的影响,通过表面亲水性的测试表征了接枝效果的好坏,SEM照片从直观上表征了接枝后PET薄膜表面形貌的巨大变化,大大改善了原PET膜印刷性差的特点。此外,UV光谱图作为马来酸酐、苯乙烯电荷转移络合物体系的表征,初步探讨了此双单体体系接枝反应的机理。     

噻呋酰胺与吡唑醚菌酯复配对马铃薯黑痣病联合作用及其田间效果

采用菌丝生长速率法测定噻呋酰胺与吡唑醚菌酯不同配比复配对马铃薯黑痣病菌的毒力,评价其联合作用,并选择最佳配比加工成制剂进行田间小区药效试验。试验结果表明:噻呋酰胺与吡唑醚菌酯以质量比3︰1、2︰1、1︰1、1︰2、1︰3复配,增效作用显著,其中以质量比1︰2复配,增效作用最佳,共毒系数为181.42。按此比例加工30%噻呋·吡唑酯悬浮剂,在有效成分用量为200~300 g/hm~2时地面喷雾,开花期、收获时对植株黑痣病和薯块黑痣病的防效分别为72.09%~75.58%和77.08%~80.80%。因此,30%噻呋·吡唑酯悬浮剂防治马铃薯黑痣病效果良好,且对马铃薯安全,有较高的推广应用价值。     

Wear Behaviour of CTC/FeCrCSi Composite

To bring the excellent abrasion-resistant po-tential of carbide into full play,composites of casttungsten carbide(CTC)grains based on mainlyplate martensite and high Cr,W white cast iron aremade on substrate of grey iron by cast-in-placehardfacing process.Results of high-stresstwo-body and three-body abrasion show that:(1)Base alloy microstructures have overwhelmingdominating effects on abrasion resistances of thecomposites in two-body and especially three-bodyabrasion systems.(2)All composites have very ex-cellent abrasion-resistances which increase drasti-cally with the increase of CTC grain size.In case ofthe same CTC grain size,composite based onmartensite white cast iron is much morewear-resistant than that based on mainly platemartensite although the volume fraction of CTCgrains in the latter is considerably larger than thatin the former.In three-body abrasion system,loadhas little effect on wear rate for composites basedon martensite white cast iron,but wear rate ofconventional wear-resistant materials increaseslinearly in a very steep slope as the nominal stressincreases.     

基于范成原理的CTC谐波齿轮传动柔轮齿廓的参数化设计与仿真

主要对圆弧-渐开线-圆弧(CTC)齿形谐波齿轮传动的柔轮进行参数化设计与仿真。首先对刀具的基准齿形进行设计,其次根据范成原理可得出与之共轭的柔轮齿形,最终基于MATLAB软件实现了柔轮齿形的参数化设计与仿真。     

Circulating Tumor Cells (CTC) and Cell-Free DNA (cfDNA) Workshop 2016: Scientific Opportunities and Logistics for Cancer Clinical Trial Incorporation

Despite the identification of circulating tumor cells (CTCs) and cell-free DNA (cfDNA) as potential blood-based biomarkers capable of providing prognostic and predictive information in cancer, they have not been incorporated into routine clinical practice. This resistance is due in part to technological limitations hampering CTC and cfDNA analysis, as well as a limited understanding of precisely how to interpret emergent biomarkers across various disease stages and tumor types. In recognition of these challenges, a group of researchers and clinicians focused on blood-based biomarker development met at the Canadian Cancer Trials Group (CCTG) Spring Meeting in Toronto, Canada on 29 April 2016 for a workshop discussing novel CTC/cfDNA technologies, interpretation of data obtained from CTCs versus cfDNA, challenges regarding disease evolution and heterogeneity, and logistical considerations for incorporation of CTCs/cfDNA into clinical trials, and ultimately into routine clinical use. The objectives of this workshop included discussion of the current barriers to clinical implementation and recent progress made in the field, as well as fueling meaningful collaborations and partnerships between researchers and clinicians. We anticipate that the considerations highlighted at this workshop will lead to advances in both basic and translational research and will ultimately impact patient management strategies and patient outcomes.     

卷积Turbo码及其在802．16宽带无线接入中的应用

首先对 IEEE 80 2 .1 6标准进行简要介绍 ,接着阐述卷积 Turbo码的编译码原理 ,在此基础上给出了 Turbo码的 log_ MAP算法 ,最后讨论 Turbo码实现过程中影响译码性能的4个关键问题     

微机中断系统分析及常用接口的程序设计(Ⅱ)

计算机应用于实时控制系统中之关键问题是组成最佳的硬件系统和软件系统。即计算机系统。本文对系统设计两个重要部份:中断系统的原理及接口电路的程序设计作了详细的讨论,并通过许多实例来说明如何根据系统工程提出的问题来组成所需的系统。(包括系统软件的组成,系统的主程序和中断服务子程序的设计),实例中给出的程序均在TP801微机上通过了模拟、仿真试验,具有很大的真实性和可移植性,对于不同的机型只要清楚对应的指令系统即能顺利的实现相应的软件设计。