首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4917篇
  免费   645篇
  国内免费   54篇
耳鼻咽喉   33篇
儿科学   406篇
妇产科学   92篇
基础医学   284篇
口腔科学   131篇
临床医学   534篇
内科学   735篇
皮肤病学   25篇
神经病学   465篇
特种医学   76篇
外科学   376篇
综合类   446篇
预防医学   974篇
眼科学   51篇
药学   343篇
  8篇
中国医学   105篇
肿瘤学   532篇
  2024年   18篇
  2023年   165篇
  2022年   107篇
  2021年   332篇
  2020年   299篇
  2019年   371篇
  2018年   280篇
  2017年   277篇
  2016年   287篇
  2015年   243篇
  2014年   308篇
  2013年   570篇
  2012年   270篇
  2011年   227篇
  2010年   197篇
  2009年   198篇
  2008年   214篇
  2007年   191篇
  2006年   161篇
  2005年   111篇
  2004年   90篇
  2003年   91篇
  2002年   79篇
  2001年   78篇
  2000年   57篇
  1999年   48篇
  1998年   46篇
  1997年   43篇
  1996年   31篇
  1995年   19篇
  1994年   27篇
  1993年   21篇
  1992年   21篇
  1991年   22篇
  1990年   17篇
  1989年   12篇
  1988年   8篇
  1987年   7篇
  1986年   15篇
  1985年   12篇
  1984年   8篇
  1983年   3篇
  1982年   9篇
  1981年   4篇
  1980年   6篇
  1979年   2篇
  1978年   3篇
  1977年   3篇
  1975年   4篇
  1967年   1篇
排序方式: 共有5616条查询结果,搜索用时 421 毫秒
1.
2.
3.
4.
5.
ABSTRACT

A qualitative grounded theory approach was used to analyze 34 narratives from young men about their experience of retaining, losing, or giving away their virginity, where 7 said they were virgins, 26 said they were non-virgins, and one did not mention his virginity status. We found that virginity is a multidimensional concept, with two distinct dimensions: the experiential and the developmental. The experiential dimension refers to young men's perception and understanding of their virginity in four overlapping areas: physical, spiritual, relational, and emotional. The developmental dimension refers to young men's perception of their underlying sexual identity growth processes and the gendered and sexual double standards that influence this understanding. Clinical implications of this study are useful in education and counseling. They seek to empower young men with information relating to the multidimensional nature of virginity experience, and minimize the negative effects on romantic relationships, sexual adjustment, and self-identity development. The findings are helpful in designing interventions for young men and women who are at high risk for sexually transmitted infections and can help them negotiate mutually safe and pleasurable experiences regarding their virginity.  相似文献   
6.
7.
8.
9.
Gender inequality is at the core of the HIV patterns that are evident in sub-Saharan Africa. Gender-based violence (GBV) and lack of economic opportunity are important structural determinants of HIV risk. We piloted a microfinance and health promotion intervention among social networks of primarily young men in Dar es Salaam. Twenty-two individuals participated in the microfinance component and 30 peer leaders were recruited and trained in the peer health leadership component. We collected and analysed observational data from trainings, monitoring data on loan repayment, and reports of peer conversations to assess the feasibility and acceptability of the intervention. Eighteen of the loan recipients (82%) paid back their loans, and of these 15 (83%) received a second, larger loan. Among the loan defaulters, one died, one had chronic health problems, and two disappeared, one of whom was imprisoned for theft. The majority of conversations reported by peer health leaders focused on condoms, sexual partner selection, and HIV testing. Few peer leaders reported conversations about GBV. We demonstrated the feasibility and acceptability of this innovative HIV and GBV prevention intervention. The lessons learned from this pilot have informed the implementation of a cluster-randomised trial of the microfinance and peer health leadership intervention.  相似文献   
10.
This study qualitatively examined factors that influenced contraceptive choices in a sample of young, HIV-infected women. Individual qualitative interviews were conducted among 30 vertically and horizontally HIV-infected women (= 26 African American) from the ages of 14 to 24 years (Mean age = 20.9 years). We recruited sample groups with the following characteristics: (a) current contraceptive/condom use with ≥1 child (= 11); (b) current contraceptive/condom use with no children (= 12); and (c) no current contraceptive/condom use with no children (= 7). A semi-structured interview guide was used to ask participants about factors influencing past and current contraceptive choices. Individual interviews were digitally recorded and transcribed verbatim; analyses to identify core themes were informed by the Grounded Theoretical approach. Young, HIV-infected women did not identify their HIV serostatus or disease-related concerns as influential in their contraceptive decisions. However, they reported that recommendations from health-care providers and input from family and friends influenced their contraceptive choices. They also considered a particular method’s advantages (e.g., menstrual cycle improvements) and disadvantages (e.g., increased pill burden) when selecting a method. Findings suggested that HIV-infected young women’s contraceptive decisions were influenced by factors other than those related to their infection.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号