基于Proteus软件的单片机仿真实例     

刘孝赵  吴振磊  柳承钢 《科技广场》2013,(5):140-143

本文以AT89C51单片机显示汉字点阵系统为例,介绍了仿真软件Proteus的基本功能和特点,研究如何使用仿真软件进行仿真,以及和Keil软件联合仿真的方法,对学生学习Proteus仿真软件具有一定的指导意义,而且提高开发效率,降低开发成本,缩短开发周期。  相似文献   

人类新基因HBVDNAPTP1结合蛋白的生物信息学分析     

伦永志  刘为国  朱莹  张国元  毛小强  司红敏  王琳 《大连大学学报》2006,27(6):80-83

[目的]应用生物信息学分析人类新基因乙型肝炎病毒(HBV)DNA聚合酶(Polym erase)反式调节蛋白(HBVDNAPTP1)结合蛋白(HBVDNAPTP1BP).[方法]利用生物信息学技术分析HBVDNAPTP1BP基因的染色体定位与组织表达,以及编码蛋白的化学物理性质与结构特征.[结果]HBVDNAPTP1BP基因染色体定位于1号染色体短臂3区5带1亚带,可在组织中低表达,但在多个组织中无表达.HBVD-NAPTP1BP的相对分子量为11 905.6,理论pI为7.72,不同条件下的消光系数为14 230 M-1cm-1或13 980M-1cm-1(280 nm),在体外哺乳动物网状细胞中的半寿期为30 h,并且无卷曲螺旋区域,但具有3个较强的疏水区域.HBVDNAPTP1BP无特殊二级结构,仅有1个蛋白激酶C磷酸化位点,不具有跨膜螺旋结构,无信号肽序列,定位于细胞核中.[结论]应用生物信息学对HBVDNAPTP1BP进行了分析,为进一步研究其生物学功能及其在乙型肝炎、肝细胞癌中的作用机制提供了依据和线索.  相似文献   

网络中的"Trojan-Spy.Agent"病毒分析及技术处理     

付光辉 《实验室研究与探索》2006,25(10):1233-1238

网络病毒已成为困扰实验室安全使用的重要问题,实验室技术人员需要掌握网络病毒的基本原理,在此基础上,以”特洛伊木马”病毒的隐蔽性和危害性进行分析。最后针对它的原理、技术、防御及手动清除方面,给了全方位的技术处理与研究。  相似文献   

系统引导型病毒机理特征及最佳根治方法     

丁建立 《洛阳师范学院学报》1996,(2)

系统引导型病毒是在系统引导加载过程中进入系统中，获得对系统的控制权。其传染性强，危害大，难以根除。本文根据系统引导型病毒机理及特征，从防范的角度出发，找到了根治系统引导型病毒的最佳方法。  相似文献   

抗鸡传染性法氏囊病病毒单克隆抗体中和株的建立     

王成明  陈傅言  蔡宝祥 《安徽科技学院学报》1993,(1)

将纯化IBDV组织毒免疫的BALB/C鼠脾细胞与SP2/0骨髓瘤细胞融合,用ELISA、病毒中和试验检测分泌抗体,获得了六株稳定分泌抗IBDV单克隆抗体的杂交瘤细胞,命名为NIB—1,NIB—2,NIB—3,NIB—4,NIB—5,NIB—6;六株单抗均具ELISA特性和免疫沉淀特性,亚类鉴定表明,前四株属于IgG_(2a),后二株属于IgG_1。杂交瘤细胞冻存六个月后复苏,均能稳定分泌特异性单克隆抗体。  相似文献   

New developments in small molecular compounds for anti-hepatitis C virus (HCV) therapy     

Tong J  Wang YW  Lu YA 《Journal of Zhejiang University. Science. B》2012,13(1):56-82

Infection with hepatitis C virus (HCV) affects approximately 170 million people worldwide. However, no vaccine or immunoglobulin is currently available for the prevention of HCV infection. The standard of care (SOC) involving pegylated interferon-α (PEG-IFN α) plus ribavirin (RBV) for 48 weeks results in a sustained virologic response in less than 50% of patients with chronic hepatitis C genotype 1, the most prevalent type of HCV in North America and Europe. Recently, reliable in vitro culture systems have been developed for accelerating antiviral therapy research, and many new specifically targeted antiviral therapies for hepatitis C (STAT-C) and treatment strategies are being evaluated in clinical trials. These new antiviral agents are expected to improve present treatment significantly and may potentially shorten treatment duration. The aim of this review is to summarize the current developments in new anti-HCV drugs.  相似文献   

浅谈计算机病毒的特点及防治技术     

张华依 《黑龙江科技信息》2009,(13):62-62

随着计算机和网络技术的不断发展,计算机病毒也在不断的快速发展,以网络传播的病毒利用网络全球互联的优势和计算机系统及网络系统安全性上的漏洞,正成为计算机系统的最大威胁。结合计算机病毒的特点,介绍了计算机病毒的特点、结构、原理、分类以及几种计算机病毒的防范措施和清除方法。  相似文献   

The benevolent health worm: comparing Western human rights-based ethics and Confucian duty-based moral philosophy     

Alana Maurushat 《Ethics and Information Technology》2008,10(1):11-25

Censorship in the area of public health has become increasingly important in many parts of the world for a number of reasons. Groups with vested interest in public health policy are motivated to censor material. As governments, corporations, and organizations champion competing visions of public health issues, the more incentive there may be to censor. This is true in a number of circumstances: curtailing access to information regarding the health and welfare of soldiers in the Kuwait and Iraq wars, poor health conditions in Aboriginal communities, downplaying epidemics to bolster economies, and so forth. This paper will look at the use of a computer worm (the benevolent health worm) to disseminate vital information in␣situations where public health is threatened by government censorship and where there is great risk for those who ‹speak out’. The discussion of the benevolent health worm is focused on the Peoples’ Republic of China (China) drawing on three public health crises: HIV/AIDS, SARS and Avian Influenza. Ethical issues are examined first in a general fashion and then in a specific manner which uses the duty-based moral philosophy of Confucianism and a Western human rights-based analysis. Technical, political and legal issues will also be examined to the extent that they better inform the ethical debate.  相似文献   

A new model for simulating evolution of human influenza virus     

Understanding the evolution of influenza A virus  which poses a global challenge to public health  is of special significance for its control  prevention. Although the genome structure of the virus is seemingly simple  their evolutionary patterns  molecular mechanisms are difficult to reveal.…… 《中国科学院院刊(英文版)》2008,22(1):17-17

Understanding the evolution of influenza A virus, which poses a global challenge to public health, is of special significance for its control and prevention. Although the genome structure of the virus is seemingly simple, their evolutionary patterns and molecular mechanisms are difficult to reveal.  相似文献   

草酸诱导甜瓜对南瓜花叶病毒的系统抗性的研究     

赵荣乐 《上海大学学报(英文版)》2000,4(2):171-174

1　Ｉｎｔｒｏｄｕｃｔｉｏｎ　Ｓｑｕａｓｈｍｏｓａｉｃｖｉｒｕｓ (ＳｑＭＶ)ｉｓｏｎｅｏｆｔｈｅｍｏｓｔｉｍ ｐｏｒｔａｎｔｃｕｃｕｒｂｉｔｖｉｒｕｓｅｓ[1～ 3] ,ａｎｄｉｔｃａｕｓｅｓｇｒｅａｔｌｏｓｓｅｓｉｎｍｕｓｋｍｅｌｏｎｐｒｏｄｕｃｔｉｏｎ[4 ] .Ｏｎｅｏｆｔｈｅｍａｉｎｗａｙｓｔｏｃｏｎｔｒｏｌｐｌａｎｔｖｉｒｕｓｄｉｓｅａｓｅｓｉｓｔｈｅｉｎｄｕｃｅｍｅｎｔｏｆｒｅｓｉｓ ｔａｎｃｅｔｏｖｉｒｕｓｅｓ[5] ｂｙｓｏｍｅｂｉｏｌｏｇｉｃａｌａｎｄｎｏｎ ｂｉｏｌｏｇｉｃａｌｆａｃｔｏｒｓ[6～ 9…  相似文献