流行病

Methods 14 C breath test was used to diagnose the present infection of Helicobacter pylori 200 patients with present Hp infection were serotyped as type Ⅰ and type Ⅱ by immunoblot technique.

血清学检测Hp抗体由于其简便易行，已成为流行病学调查和临床辅助诊断的常用

Methods: Cervical swabs taken from 98 sex workers, 261 gynecological physical check-up clients and 599 sexual transmitted infections clinic female outpatients were cultured using commercial selective medium. Some positive cultures were further, biotyped and serotyped by PCR. Cervical or urethral swabs taken from 80 sexual transmitted infections clinic outpatients were cultured.

对98例卖淫妇女、261例妇科体检病人以及599例性病门诊女性患者的宫颈涂片进行解脲脲原体的培养，部分培养阳性的标本用PCR的方法进行Uu生物分群，对生物1群阳性的标本进一步区分血清型，并对该流行病学资料进行了统计学分析。

Chapter 4 focuses on the study of an age structured SEIRS epidemic model with a vaccination program in varying total population size.

第四章讨论了疾病影响总人口的死亡率和总人口规模变化情况下的年龄结构的SEIRS流行病模型。

In Chapter 4, the influence of pulse vaccination, time delays and vertical transmission on SEIR and SEIRS epidemic models is investigated.

第四章研究脉冲免疫接种、时滞及垂直传染对SEIR及SEIRS流行病动力系统的影响。

D. thesis contains two parts: Part one (contains Chapter 1-Chapter 4) establishes systematically the age-structured SEIR epidemic model, the SEIR model with vertical transmission of disease, the SEIR model with the loss of immunity and an age-dependent vaccination rate, and the SEIRS model with a vaccination program in varying total population size.

本文分两部分：第一部分（含前4章）首次系统地建立了年龄结构的SEIR流行病模型、带垂直传染的SEIR模型、带二次感染和接种疫苗的SEIR模型和总人口规模变化的SEIRS模型。

Reiters syndrome can also happen after recovery from dysentery, and has been seen after epidemics, for example during wartime.

reiter 综合征，也有可能发生后，恢复从痢疾，并已看到后，流行病，例如在战时。

Methods randoms sampling method was used and the participants were interviewed by trained health workers under a structured questionnaire.

采用随机抽样的流行病学调查方法进行问卷调查，并对调查人群（392人）测定空腹血糖、血脂、体重指数、血压等，运用CDS标准（2004年）MS定义对资料进行分析。

Provirus DNA was extracted, HIV-1 gag genes were amplified by nested-PCR and sequenced directly with pairs of specifically designed primers, sequences were then analyzed by GCG software system to determine genotypes, and phylogenetic trees were established.

采集17名感染HIV的农村外来妇女及这些外来妇女的4例阳性配偶的外周血，提取前病毒DNA，应用套式PCR进行艾滋病病毒gag基因检测，使用GCG软件包对扩增序列进行分析，并对这些HIV感染者进行相关流行病学调查。

Liaoning provincial government, said the notice, any poultry rearing units and individuals must accept the supervision of animal health sector organizations of the epidemic survey, monitoring and immunization.

辽宁省政府的通知说，家禽饲养任何单位和个人必须接受动物健康的流行病学调查，监测和免疫部门组织的监督。

Epidemiological studies have recently demonstrated a relationship between pre-eclampsia and coronary heart disease.

最近的流行病学调查显示，子痫前期与冠心病有一定相关性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。