全文获取类型
收费全文 | 618篇 |
免费 | 4篇 |
专业分类
管理学 | 27篇 |
民族学 | 4篇 |
人口学 | 148篇 |
理论方法论 | 56篇 |
综合类 | 5篇 |
社会学 | 348篇 |
统计学 | 34篇 |
出版年
2024年 | 1篇 |
2023年 | 4篇 |
2021年 | 2篇 |
2020年 | 4篇 |
2019年 | 10篇 |
2018年 | 20篇 |
2017年 | 23篇 |
2016年 | 12篇 |
2015年 | 4篇 |
2014年 | 11篇 |
2013年 | 225篇 |
2012年 | 13篇 |
2011年 | 16篇 |
2010年 | 12篇 |
2009年 | 6篇 |
2008年 | 12篇 |
2007年 | 10篇 |
2006年 | 13篇 |
2005年 | 9篇 |
2004年 | 11篇 |
2003年 | 10篇 |
2002年 | 9篇 |
2001年 | 11篇 |
2000年 | 9篇 |
1999年 | 24篇 |
1998年 | 16篇 |
1997年 | 8篇 |
1996年 | 15篇 |
1995年 | 7篇 |
1994年 | 13篇 |
1993年 | 11篇 |
1992年 | 11篇 |
1991年 | 9篇 |
1990年 | 13篇 |
1989年 | 5篇 |
1988年 | 2篇 |
1987年 | 3篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1982年 | 5篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1979年 | 3篇 |
1978年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1973年 | 1篇 |
1966年 | 1篇 |
排序方式: 共有622条查询结果,搜索用时 31 毫秒
21.
Population and Environment - 相似文献
22.
McCoy Clyde B. Metsch Lisa R. McCoy H. Virginia Lai Shenghan 《Population research and policy review》1999,18(1-2):71-87
Despite the central role of women drug users in escalating AIDS statistics, there is still a limited number of studies that examine the roles of gender and drug use type in HIV seroprevalence. This lacuna in the research literature has led to significant gaps in researchers' understanding of how and to what extent women may differ in their drug-using and HIV risk behaviors compared to their better-studied male counterparts. This study, derived from a sample of 3,555 out-of-treatment drug users residing in three South Florida urban and rural communities, attempts to compare the drug usage and needle and sexual risk behaviors of male and female drug users that put them at risk for HIV infection. The overall seropositivity rate for women drug users was 26.5% compared to 19.5% for their male counterparts. Results of multivariate analyses indicate that females compared to males were 1.4 times more likely to be HIV seropositive. Risk behaviors associated with this elevated seropositivity include living arrangements, homeless status, drug use, sexual trading behaviors, and history of STDs. Furthermore, there was a strong linear relationship between drug use type and HIV seroprevalence among women drug users. Compared to those who were neither crack smokers nor injectors of illicit drugs, those who were crack smokers only were 2 times more likely to be HIV seropositive, while those who were both crack smokers and injectors were 5 times more likely to be HIV seropositive, and those who were injectors only were 6 times more likely to be HIV seropositive. These findings indicate that among women, drug abuse and its associated risk behaviors, increase the vulnerability of this population for HIV and thus render them an extremely important priority population on which to focus HIV prevention and public health efforts and programs. 相似文献
23.
Population and Environment - 相似文献
24.
25.
Richard P. Keeling MD 《Journal of American college health : J of ACH》2013,61(6):243-246
Abstract The anatomy and physiology of the ears, nose, and sinuses are reviewed. Diseases and injuries typically associated with water sports are discussed, with emphasis on pathophysiology, treatment, and preventative measures. “Screening for Chlamydial Infections in Women Attending Family Planning Clinics: Evaluation of Presumptive Indicators for Therapy,” JULIUS SCHACHTER, EILEEN STONER, and JEANNE MONCADA. Chlamydia trachomatis was recovered from the cervices of 9.8 percent (268/2,729) of women attending seven family planning clinics. The infection rate varied from 5.5 percent to 22.5 percent in different clinics. Chlamydial infection could be associated with younger age, nulliparity, being black and use of oral contraceptives. Most (70 percent) of the chlamydial infections were inapparent and presumptive indicators for antichlamydial therapy that are useful for symptomatic women will not make a major impact on this reservoir. It is concluded that chlamydial cultures are needed to deal with the high prevalence of these infections. (Western Journal of Medicine 1983 Mar;138:375–379.) 相似文献
26.
27.
28.
29.
30.