传染理论

Using the theory on delay functional and impulsive differential equation, sufficient condition with time delay for the permanence of the system was obtained. And it was proved, that time delays, pulse vaccination and vertical transmission can bring obvious effects on the dynamics behaviors of the model.

运用脉冲时滞泛函微分方程理论，获得了含有时滞的持久性的充分条件，并且证明了时滞、脉冲免疫与垂直传染对模型的动力学行为能够产生显著的影响。

An investment game theoretic model was presented to study the externality in firms' network security investment with different investment costs and profits.

在企业投资成本和投资利润不同的情况下，应用博弈论理论计算了网络安全投资过程中，由于病毒传染所带来的投资负外部性，提出了信息安全的投资博弈模型。

It was not until scientists like Louis Pasteur and Robert Koch developed the germ theory that the mystery of infectious disease was unraveled.

它直到科学家象一样路易斯·帕斯蒂尤尔和罗伯特·科奇开发了细菌理论谜传染的疾病被解开。

The SARS virus origin which obviously differs from the theory of out space origin and the theory of wildlife origin was theoretically discussed based on principles of pollution evolution ecology,pathogenesis and infectant characteristics of SARS,and some relevant experimental evidence. It emphasizes on the fact that increasingly combined pollution in China provides a substantial basis for virus evolution.

针对当前广为流传的SARS病毒"太空起源说"和"野生动物来源说"两种理论，本文根据污染进化生态学原理和SARS病毒发病传染特征，以有关实验结果为科学依据，阐述了SARS病毒的起源问题，指出：我国当前环境日益严重的复合污染为SARS致病病毒的产生提供了适宜的外部生态条件和物质基础，SARS致病病毒可能起源于多个病毒的基因重组或融合，更可能是一种来自于感冒病毒进化而形成的超级感冒病毒。

Therefore, a theoretical HIV transmission risk does exist if the unhealed or abraded tissues come into contact with an infected person抯 blood or other infectious body fluid.

因此，如果未愈合或被磨损的组织接触了一个HIV携带者的血液或者其他能传染HIV的体液，在理论上这是有感染上HIV的可能的。

Form、structure、characterization and function of prokaryotic、eukaryotic and molecular organisms;②nutrition and cultivation techniques of microorganisms;③physiological and metabolizable production of microorganisms;③theory of genetic variation and microbic breeding technique of microorganisms;⑤ecology and environmental protection of microorganisms;⑥Infection、 Immunity and biologics of microorganisms;⑦classification and identification of microorganisms and the international Code of Nomenclature of microorganisms.and microbial high-techs developing on these as the fundament of life sciences.

主要讲授：①原核微生物、真核微生物及分子生物的形态、结构、特点和功能；②微生物的营养和培养技术；③微生物生理及代谢产物；④微生物遗传变异理论和育种技术；⑤微生物生态和环境保护；⑥微生物传染、免疫和生物制品；⑦微生物分类鉴定和国际命名法则，以及在此基础理论上发展起来的微生物高新技术，是当代生命科学研究的基础。

He proved by flying a kite that lightning was electricity, and he invented a rod to tame it. He devised bifocal glasses and clean-burning stoves, charts of the Gulf Stream and theories about the contagious nature of the common cold. He was a pioneer of do-it-yourself civic improvement, launching such schemes as a lending library, volunteer fire corps, insurance association and matching-grant fund raiser. He helped invent America's unique style of homespun humor and philosophical pragmatism. In foreign policy, he created an approach that wove together idealism with balance-of-power realism.

他用风筝来确认闪电成因，并发明避雷针；他设计了双焦距眼镜、新式火炉，绘制了墨西哥湾流表，提出了感冒传染理论；他是DIY思想的开创者，收费图书馆、自愿消防队、保险协会和配合奖助金的创始人；他开创了家庭式幽默和哲学实用主义的美国形式；在对外政策上，他推行势力均衡现实主义和理想主义结合的理念；在政治上，他提出了各州联合建立民主联邦政府的方案；所有开国者中肩负的责任最重的他向这个新兴的民族灌注了使其立于民族之林的美德：宽容，信仰如宗教般的宽容。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。