地方病

It is shown that if R01, it is unstable, but the endemic equilibrium is locally asymptotically stable.

并证明了，如果R01，则它是不稳定的，但是，地方病平衡点是局部渐近稳定的。

Objective To study spatial autocorrelation and spatial variation of urinary iodine of children and to provide references for statistical data analysis of spatial disease.

目的 探讨碘缺乏病监测资料儿童尿碘的空间自相关性及变异情况，为地方病的防治提供科学的依据，为疾病空间数据的分析提供统计学方法上的参考。

By bifurcation theory, we get the existence and local stabilities of the positive periodic solution.

利用分支理论得到了地方病周期解的存在性及局部稳定性。

In order to prove the global asymptotical stability of the endemic equilibrium, we introduce the change of variable which can reduce our original four-dimensional system to a three-dimensional asymptotical autonomous system with limit system.

利用复合矩阵理论以及竞争系统的Poincaré性质排除了渐近自治三维系统的极限系统周期解的存在性，进而利用极限方程理论得到了原四维系统地方病平衡点的全局稳定性。

For the infective subsystem, we obtain the existent condition of the subsystem equilibrium point and the uniqueness of the positive equilibrium point by the no infectious subsystem's conclusion and the image analysis. The partial stability of the subsystem equilibrium points is discussed by analyzing eigenvalue. The condition that the system has no limit cycle is obtained by the Dulac function.

对染病子系统，利用无病子系统所得结论及图像分析法，得到了系统平衡点的存在条件，正平衡点的存在唯一性；利用特征根方法判断了系统平衡点的局部稳定性；利用Dulac函数得到了系统不存在极限环的条件；利用极限方程理论得到了系统疾病消除平衡点和地方病平衡点的全局稳定性。

But he said there was no evidence of endemic abuse.

但他表示，目前还没有任何证据地方病虐待。

Fluorosis is one of the most seriously endemic diseases that was harmful to the health of people.

前言 氟中毒是严重危害人体健康的主要地方病之一。

Endemic fluorosis is a familiar endemic disease which has done a lot of harm to human being.

地方性氟中毒是一种常见的危害严重的地方病，在江苏省一定范围内存在不同程度的流行。

As an academic leader, Professor Yu Weihan, together with other researchers, has controlled the mass-outbreak of Keshan Disease in the countryside of China during the recent 60 years. Nutrition biogeochemistry theory, which is posed by Professor Yu, is accepted by in and out the science circles. Literatures about keshan disease, such as Type, diagnosis and treatment, delimiting standards of endemic areas, pathologic diagnosis, epidemiology, further more, Chinese Journal of Endemiology, environment graphs of endemic disease of the People's Republic of China and internal medicine, which are drafted and edited by Professor Yu, are guidance of prevention and treatment and scientific researches of Keshan Disease in China, and meanwhile facilitate the researches of endemic diseases in China and international academic communication.

於维汉近60年来作为学术带头人，他和广大科研工作者一道控制了猖獗於我国农村的克山病；他的营养生物地球化学病因学说，被国内外科学界所接受；他起草主编的克山病《分型、诊断与治疗》、《病区划定标准》、《病理诊断》及《中国地方病学杂志》、《中华人民共和国地方病於环境图集》、《内科学》等指导和推动了我国克山病的防治和科研工作，同时促进了我国的地方病研究和国际学术交流。

Based on the dynamical system of a tuberculosis spread m odel, the dynamical behavior of a tuberculosis spread model with constant immigr ation was discussed, and the local and global asymptotic stability of the endemi c equilibrium on this model is studied by using Hurwitz criterion and multiple m atrix theory. Sufficient conditions for the local and global asymptotically stab ility of the endemic equilibrium on this model are obtained.

在结核病传播的数学模型的动力学系统基础上，利用 Hurwitz 判据和复合矩阵理论，讨论了具有常数移入的结核病传播的数学模型的动力学性质，研究了具有常数移入的结核病模型的地方病平衡点的局部和全局渐近稳定性，得到了具有常数移入的结核病模型的地方病平衡点是局部和全局渐近稳定的充分条件。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了