梳冬夜蛾和白边切夜蛾卵抗寒性研究

对梳冬夜蛾和白边切夜蛾卵的过冷却点、结冰点和不同低温强度及持续时间等指标的冷冻处理测定结果:梳冬夜蛾卵过冷却点为-18.76±4.09℃,结冰点为-17.7±5.02℃;白边切夜蛾卵的相应指标分别为-8.13±3.17℃和-7.15±3.09℃。两种蛾卵在一定的低温条件下,处理时间愈长,卵孵化率愈低;随着低温强度加大,卵孵化率明显降低。     

应用PCR技术对DMD做基因诊断的研究

杜氏肌营养不良症，是致死性Ｘ链锁隐性遗传病。     

机器人的时间最优控制轨迹规划

以时间最短作为性能指标,建立了机器人轨迹规划的最优控制算法。这种算法对于PTP运动和沿CP运动都是适用的。本文工作的实际意义在于可以提高产业机器人的工作效率。以PUMA-560机器人为例,对所建立的最优控制算法进行了计算机仿真,结果表明该算法是正确、有效的。     

我国高校教学中的"八化"倾向分析

本文分析了高校教学中存在的教学计划随意化、教学目的模糊化、教学环节简单化、实践教学虚拟化、教学手段形式化、教材选用信息化、考试方式单一化、教学管理表面化等八种影响教学质量的倾向,并提出了防止“八化”倾向的措施。     

一种优化的网络设备激励响应测试研究

网络设备中潜在的恶意功能构成了对信息安全潜在的重大威胁，检测这些恶意功能是否存在是网络设备测评的主要目的之一．论述了恶意功能的主要危害，分析了它的潜伏和控制途径，在此基础上提出了一种优化触发条件的激励响应检测方法，并对Apache服务器和一种基于ICMP激活的后门程序进行了仿真实验，结果表明所提出的方法是一种有效可行的测试方法．     

Inhibition of DNA restrictive endonucleases and Taq DNA polymerase by trimalonic acid C60

Activities of trimalonic acid fullerene (TMA C_60) on DNA restrictive enzymatic reaction were investigated by using two restrictive endonucleases Hind III and EcoR I and plasmid pEGFP-N1 with single restric-tive site for both enzymes. Meanwhile, TMA C60 was also tested to clarify its effects on polymerase chain reaction (PCR) with the catalyst of Taq DNA polymerase and the template of plasmid pEGFP-N1. The products from restrictive reactions or PCR were detected by agarose gel electrophoresis. It was found that the product amounts from restrictive reactions or PCR decreased significantly with addition of TMA C60. The inhibition by TMA C60 was dose-dependent and IC50 values for reactions of Hind III, EcoR I and PCR were 16.3, 6.0 and 6.0 μmol/L, respectively. Addition of two scavengers of reactive oxygen species (ROS), L-ascorbic acid-2-phosphate ester magnesium and sodium azide at the con-centrations of 2―10 mmol/L did not antagonize the activities of TMA C60 against PCR and two restrictive reactions. However, increase of Taq DNA polymerase amounts in PCR system antagonized the activities of TMA C60. These data implied that TMA C60 was able to inhibit the activities of the three above-mentioned enzymes involved in DNA metabolism, and that this inhibition probably did not correlate to ROS.     

邻硝基苯胺在硫酸介质中的磺化反应研究

本文分别利用过量硫酸及发烟硫酸为反应介质,对邻硝基苯胺的磺化工艺条件进行了研究,在较佳工艺条件下,磺化反应转化率可达90%以上.     

具有抗噪性能的运动检测的硬件实现

设计了用硬件实现的两种检测算法的原理框图．可实时对２５６×２５６的图像进行运动目标检测处理．用硬件实现了噪声的实时检测与计算，为门限值的确定提供了依据．按照所提出的算法建立的实时系统具有较强的抗噪能力和一定的自适应能力，它具有简单、实时的特点．其结构可以扩展到处理５１２×５１２的图像，适合于ＶＬＳＩ的实施．