反坦克导弹武器系统电磁兼容性研究

阐述了电磁兼容性概念，设计及控制技术，结合反坦克弹武器系统的电磁兼容性设计者控制中的经验，着重探讨了元件选择、电磁兼容电路设计、电磁兼容结构设计、滤波、屏蔽、接地等技术。     

脱硫装置碳钢腐蚀缓蚀剂研发

为了减缓或抑制脱硫装置中碳钢的H2S应力腐蚀开裂,通过挂片试验和极化曲线测试筛选出了N-甲基二乙醇胺(MDEA)、单油咪唑啉两种缓蚀剂,对减缓腐蚀和抑制氢鼓泡的效果都很好。还通过恒应变速率拉伸试验分别对它们在饱和H2S水溶液中的缓蚀效果进行定量评价,结果表明,这两种缓蚀剂的加入,都能够很大程度地降低碳钢应力腐蚀的敏感性。     

Ozone toxicity to Sitophilus zeamais (Coleoptera: Curculionidae) populations under selection pressure from ozone

Two populations of Sitophilus zeamais (Coleoptera: Curculionidae) were subjected to selection pressure with ozone (O₃), and the possibility of acquiring resistance to O₃ was investigated. The pattern of locomotion and the rate of respiration were evaluated following each selection cycle. Two source populations were used in the study: one was a mixture composed of 30 populations (MP), and the other was composed of the population that was the least susceptible to O₃ among these 30 populations (LSP). The beetles from each source population experienced selection cycles with O₃ using the lethal time for 80% (LT₈₀) of the insect population from each generation. The O₃ toxicity (50 ppm at a continuous flow rate of 2 L min⁻¹) to each generation was calculated using time-response bioassays. The locomotor pattern (distance traveled, resting period, and walking speed) and the respiratory rate (CO₂ production) were also evaluated. The S. zeamais populations that were subjected to successive cycles of selection with O₃ did not acquire resistance to O₃, and the pattern of locomotion and the rate of respiration did not change following the selection cycles with O₃.     

Effect of Hydrogen on Dezincification Layer-Induced Stress

The effect of hydrogen on the dezincification layer-induced stress and the susceptibility to SCC was investigated.Experimental results showed that the dezincification layer-induced stress increased with increasing hydrogen concen-tration. and 3×10~(-6) hydrogen could increase the susceptibility to SCC of brass in ammonia solution by 10%.     

针入度对室温的敏感性与PI或PVN的关系

选用国内最具代表性的８种沥青，按照国际（ＧＢ／Ｔ４９０５）对针入度进行测定，通过平行实验和重度性试验，探讨了针入度对室温的敏感性与ＰＩ或ＰＶＮ的关系。     

Examining the Distinct Antecedents of E‐Mail Habits and its Influence on the Outcomes of a Phishing Attack

While research has linked social media phishing susceptibility to individual Facebook habits, the underlying process by which habits lead to victimization and the extent to which it explains e‐mail‐based phishing remains unclear. The study compared the antecedents and consequences of e‐mail habits and cognitive processing on the outcome of a simulated phishing attack. E‐mail habits were rooted in stable personality dimensions of conscientiousness and emotional stability, while cognitive processing was premised on contextual information adequacy considerations. Interestingly, habits and processing jointly influenced the outcome of the attack: Systematic processing attenuated phishing susceptibility by a small factor; the cumulative effects of heuristic processing and e‐mail habits, however, caused a fourfold increase in likely victimization, overwhelming any advantage from detailed processing.     

滚动式点啮合环面蜗杆传动的误差敏度分析

提出了新型滚动式圆柱面包络点啮合环面蜗杆副的高副机构传动原理 ,建立了此类机构误差与变异关系的数学模型 ,据此分析了机构对各类误差的敏度及其适应性问题 ;并通过应用实例的分析计算 ,证明了滚动式圆柱廓面包络点啮合环面蜗杆传动副对各类位置误差的敏度处在较低的量级 ,具有良好的适应性。本文的研究方法适用于各类点啮合高副机构的运动几何特性分析与计算。     

Ozone as a management alternative against phosphine-resistant insect pests of stored products

This study was carried out to assess ozone toxicity to 16 populations of Tribolium castaneum (Herbst), 11 populations of Rhyzopertha dominica (F.) and nine populations of Oryzaephilus surinamensis (L.) collected from six regions of Brazil. These populations were also used to test if there is cross-resistance to ozone and phosphine. The relationship between susceptibility to ozone and respiration rate, and associated fitness costs were also evaluated. The instantaneous population growth rate (r_i), CO₂ production and mean insect body mass of each population were measured. Ozone toxicity was determined using time-response bioassays at the dosage rate of 150 ppm ozone in a continuous flow of 2 L min⁻¹. All of the populations were susceptible to ozone and there was no cross-resistance to ozone and phosphine. The populations of each species differed in respiration rate and body mass, but there was no significant association between respiration rate or body mass and susceptibility to ozone, as was also the case for the instantaneous rate of population increase (r_i). As none of the populations showed resistance to ozone, regardless of their susceptibility to phosphine, ozone is a potential alternative for phosphine resistance management in the insect species evaluated in this study.     

Susceptibility to contact insecticides of granary weevil Sitophilus granarius (L.) (Coleoptera: Curculionidae) originating from different locations in the former Yugoslavia

The insecticides dichlorvos, malathion, chlorpyrifos-methyl, pirimiphos-methyl, deltamethrin and cypermethrin were applied to filter paper to assess their toxicity to granary weevil Sitophilus granarius adults. Based on discriminating doses obtained from tests on a susceptible laboratory population, the susceptibility of 12 populations originating from different storage facilities (11 in Serbia and 1 in Bosnia-Herzegovina) was tested. The facilities included silos, floor stockpiles and attic stockpiles. Weevils originating from Apatin, Belgrade Port, Bijeljina and Kikinda were submitted to toxicity testing, and determination of ld-p lines, LD values and levels of susceptibility/resistance. Chlorpyrifos-methyl proved the most toxic and cypermethrin the least toxic insecticides against all populations. Dichlorvos, malathion and pirimiphos-methyl had the least toxic effect on weevils originating from Belgrade Port and Kikinda, While deltamethrin was most toxic to weevils from Belgrade Port, and least toxic to weevils from Kikinda. The resistance ratios (RR) for deltamethrin at the LD₅₀ and LD₉₅ levels 48 h after exposure to treated filter paper were 11.2 and 14.5 for Bijeljina weevils, and 20.9 and 25.5 for Kikinda weevils.