流行病

The people bin Laden believed deserved to die just because they were Americans included a career diplomat I had met twice and his son; a woman who had just spent her vacation caring for her aged parents; an Indian-born foreign service officer who had traveled the world working for her adopted country; an epidemiologist working to save African children from disease and death; a mother of three small children; a proud new grandmother; an accomplished jazz musician with a day job in the foreign service; an embassy administrator who had married a Kenyan; and three sergeants, one each in the army, the air force, and the Marine Corps.

本·拉登认为这些人该死，原因只不过他们是美国人，包括一位我见过两次的职业外交官和他的儿子；一位正在休假中照料年老父母的女子；一位印度出生的使馆官员，她周游世界，为收养了她的这个国家工作；一位正在挽救非洲儿童免于疾病和死亡的流行病学专家；一位有三个小孩的母亲；一位自豪的刚成为奶奶的妇女；一位白天为驻外办事处工作的有造诣的爵士音乐家；一位同肯尼亚人结婚的使馆行政人员；三位军士，分属陆军、空军和海军陆战队。

Currently, the center's 400-plus staff is working on more than 250 epidemiological and health services research projects.

目前，该中心有400余名员工正在从事250多项流行病学和健康服务研究项目。

Copper-bearing IUD is more effective for contraception.

国内关于IUD的报道很多，但主要集中在IUD的有效性、安全性的比较研究及新型IUD的研制上[1] ，大规模IUD使用的流行病学调查相对缺乏，特别是在惰性IUD向活性IUD的转换时期，为此，笔者对四川省近年来IUD使用状况及使用中存在的问题进行了调查。1 对象与方法调查采取分层整群随机抽样方法，将全省

Methods: This was a cross-sectional study.

本研究采用流行病学现况调查法。

Objective: To analyze the epidemiological characteristics of drug abusers in Guangxi.

目的：调查分析广西壮族自治区1030例药物滥用者的人口及流行病学特征。

Male and female heroin abusers have different features in drug abuse.

男性与女性海洛因依赖者具有不同的流行病学特点，应采取不同的防治措施。

BACKGROUND: Epidemiological evidence has suggested a link between beta(2)-agonists and increases in asthma mortality.

背景：流行病学证据显示，使用β2受体激动剂与哮喘患者死亡率增加有关。

Nevertheless, they can combine with amines or amides in food to form N-nitrosocompounds, nitrosamines and some of these have been shown to be carcinogenic in experimental animals and epidemiologically implicated carcinogenicity.

不过，硝酸盐及亚硝酸盐可以与食物所含的胺或胺化物化合，形成硝基化合物-硝胺。在动物身上进行的实验结果显示，部份硝胺是会致癌，而流行病学的研究结果也显示有些硝胺与癌症有关。

Although works in different areas in babesiosis have been made, including causative agents, epidemiology, diagnosis and treatment etc., it is not enough to satisfy the needs of prophylaxis of bovine babesiosis.

尽管我国的研究人员已对本病的病原学、流行病学、诊断及综合防制技术等方面进行了大量研究，但仍不能满足畜牧生产中巴贝斯虫病防治需要。

These new types have replaced the original CPV type 2 worldwide, and CPV type 2b predominates overwhelmingly relative to CPV type 2a and is endemic in most populations of domestic canids in China.

通过单克隆抗体识别、限制性酶切及PCR等方法进行的流行病学调研表明：自从最早期的CPV-2型细小病毒出现以来，CPV已演化出新抗原型，即CPV-2a与CPV-2b型。

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。