中国最大的综合性文献数据库 -维普资讯 关键词: 老年人 艾滋病 流行特点[gap=1607]Key words: the elderly; HIV /AIDS; epidemic characteristics
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The mathematical model of epidemiology widely applies in each domain of epidemiology research. The model has the vital role at the research of diseases epidemic characteristic, the effect appraisal and forecast.
流行病学数学模型广泛应用于流行病学研究的各个领域,在研究疾病的流行特征、效果的评价和疾病的预测中,模型均有着重要的作用。
参考来源 - 应用三种数学模型对传染病疫情进行预测和分布拟合·2,447,543篇论文数据，部分数据来源于NoteExpress
OBJECTIVE To study the epidemic characteristic of cancer on upper digestive.
目的研究上消化道恶性肿瘤的流行病学特征。
Objective Analyses and probe the clinical symptoms, signs and epidemic characteristic of arsenism caused by coal burning pollution.
目的探讨燃煤污染型砷中毒的临床症状、体征以及流行特点。
A infectious disease of duck with the characteristic of "swollen head" is researched in this article. The epidemic characteristic, symptom and pathological changes are described.
本文对成都地区流行的以头颈肿胀为特征的鸭传染病进行研究，描述了该病的流行特点、临床症状、病理解剖变化。
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