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   11611篇
  免费   1394篇
  国内免费   87篇
耳鼻咽喉   126篇
儿科学   461篇
妇产科学   119篇
基础医学   729篇
口腔科学   454篇
临床医学   1576篇
内科学   2777篇
皮肤病学   66篇
神经病学   1368篇
特种医学   188篇
外科学   626篇
综合类   649篇
一般理论   2篇
预防医学   2389篇
眼科学   90篇
药学   625篇
  8篇
中国医学   124篇
肿瘤学   715篇
  2024年   48篇
  2023年   503篇
  2022年   516篇
  2021年   886篇
  2020年   820篇
  2019年   938篇
  2018年   746篇
  2017年   717篇
  2016年   651篇
  2015年   526篇
  2014年   706篇
  2013年   1351篇
  2012年   551篇
  2011年   513篇
  2010年   404篇
  2009年   414篇
  2008年   426篇
  2007年   366篇
  2006年   297篇
  2005年   238篇
  2004年   196篇
  2003年   175篇
  2002年   168篇
  2001年   136篇
  2000年   102篇
  1999年   86篇
  1998年   84篇
  1997年   74篇
  1996年   64篇
  1995年   37篇
  1994年   47篇
  1993年   34篇
  1992年   41篇
  1991年   36篇
  1990年   26篇
  1989年   22篇
  1988年   14篇
  1987年   12篇
  1986年   21篇
  1985年   16篇
  1984年   14篇
  1983年   6篇
  1982年   17篇
  1981年   9篇
  1980年   6篇
  1979年   5篇
  1978年   7篇
  1977年   6篇
  1975年   7篇
  1967年   2篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
The effects of climate change include floods, hurricanes, heat waves, and fires; these natural disasters can result in respiratory, cardiovascular, and psychological harm in older adults, who experience the highest morbidity and mortality during heat waves. Advanced practice registered nurses (APRNs) need education on preparing, assessing, and treating older adults for climate-change disasters, especially heat waves. This article will help APRNs understand the effects of climate-change events on the vulnerable older adults and advocates for the need to integrate health effects of climate change into curricula, practicums, policy, and research agendas.  相似文献   
2.
3.
4.
5.
6.
7.
Objective: Keyes’ two continua model is a useful concept in which mental health and mental illness exist on two separate axes. Based on this model, this study examined the prevalence and correlates of three mental health categories among older adults in China.

Methods: Cross-sectional data were derived from Wave 1 of the Study on Global AGEing and Adult Health. Participants were categorized into complete mental health (CMH), complete mental illness (CMI), and moderate mental health (MMH) groups. Multinomial logistic regressions were used.

Results: The prevalence of CMH, CMI, and MMH in China was 18%, 16%, and 66%, respectively. Being female, unmarried, younger, and feeling unhealthy were more likely to result in placement in the CMI category. Employment, education, and cognitive function were identified as important protective factors of CMH. Age, income, urban or rural residence, and physical function difficulty were associated with all three categories.

Discussion: We demonstrated the utility of the two continua model in identifying mental health needs in Chinese contexts. The findings suggest that future policy reforms and clinical interventions should establish a more comprehensive mental health category as a screening tool nationwide. The promotion of social engagement could play an important role in treating mental illness and improving positive mental health.  相似文献   

8.
9.
Background and objectivesRecent research has identified neighborhoods as an important contributor to later-life frailty. However, little is known about how neighborhood resources are associated with frailty trajectories over time, especially in developing countries. This study examines the impact of neighborhood physical and social resources on the trajectories of frailty over time among older people in China.Research design and methodsUsing the four waves of the China Health and Retirement Longitudinal Study (2011–2018), 5673 respondents aged 60 and above at baseline were included for analyses. Multilevel growth modeling was fitted to estimate the effects of neighborhood resources on frailty trajectories over a 7-year period, controlling for individual-level characteristics.ResultsOlder Chinese people who lived in neighborhoods with better basic infrastructures and a greater number of voluntary organizations were less frail at baseline. Accessible exercise facilities were associated with a lower initial level of frailty only among rural older adults, while higher community-level socioeconomic status (SES) was associated with a lower initial level of frailty only among urban older adults. Over the 7-year follow-up period, better basic infrastructures and accessible exercise facilities were associated with a slower increase rate of frailty scores among rural residents.Discussion and implicationsNeighborhood resources are important contributors to the level of frailty among older Chinese people. Our findings of significant urban-rural differences have important implications for designing and implementing infrastructure development and community building programs in rural and urban China.  相似文献   
10.
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   
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