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   7837篇
  免费   623篇
  国内免费   16篇
耳鼻咽喉   77篇
儿科学   377篇
妇产科学   189篇
基础医学   990篇
口腔科学   218篇
临床医学   1069篇
内科学   1342篇
皮肤病学   98篇
神经病学   710篇
特种医学   161篇
外国民族医学   3篇
外科学   799篇
综合类   100篇
一般理论   13篇
预防医学   1173篇
眼科学   92篇
药学   509篇
中国医学   16篇
肿瘤学   540篇
  2023年   65篇
  2022年   105篇
  2021年   283篇
  2020年   157篇
  2019年   261篇
  2018年   248篇
  2017年   196篇
  2016年   184篇
  2015年   201篇
  2014年   309篇
  2013年   417篇
  2012年   608篇
  2011年   605篇
  2010年   261篇
  2009年   270篇
  2008年   436篇
  2007年   469篇
  2006年   454篇
  2005年   451篇
  2004年   382篇
  2003年   329篇
  2002年   268篇
  2001年   115篇
  2000年   115篇
  1999年   90篇
  1998年   58篇
  1997年   40篇
  1996年   23篇
  1995年   35篇
  1992年   67篇
  1991年   52篇
  1990年   55篇
  1989年   61篇
  1988年   43篇
  1987年   52篇
  1986年   54篇
  1985年   39篇
  1984年   35篇
  1983年   32篇
  1982年   23篇
  1980年   25篇
  1979年   41篇
  1978年   32篇
  1977年   43篇
  1976年   26篇
  1975年   27篇
  1974年   28篇
  1973年   25篇
  1972年   37篇
  1970年   34篇
排序方式: 共有8476条查询结果,搜索用时 546 毫秒
71.
Highly effective CFTR modulator drug therapy is increasingly available to those with cystic fibrosis. Multiple observational research studies are now being conducted to better understand the impacts of this important therapeutic milestone on long-term outcomes, patient care needs, and future research priorities. PROMISE is a large, multi-disciplinary academic study focused on the broad impacts of starting elexacaftor/tezacaftor/ivacaftor in the US population age 6 years and older. The many areas of investigation and rationale for each are discussed by organ systems, along with recognition of remaining important questions that will not be addressed by this study alone. Knowledge gained through this and multiple complementary studies around the world will help to understand important health outcomes, clinical care priorities, and research needs for a large majority of people treated with these or similarly effective medications targeting the primary cellular impairment in cystic fibrosis.  相似文献   
72.

The COVID-19 pandemic and the mitigation measures put in place have resulted in universal disruption in the usual ways of life for individuals. The current study sought to investigate how aspects of sexual health (well-being and functioning) and relationship satisfaction changed or remained stable during the pandemic. During two separate time points (Time 1 including Time 1 and a retrospective baseline, Time 2), participants completed online measures of sexual well-being (sexual pleasure, partnered and solitary orgasm frequency, sexual distress), sexual functioning, and relationship satisfaction. Participants reported slight declines in sexual pleasure, frequency of orgasms with a partner, and frequency of solitary orgasms from pre-COVID-19 (retrospective baseline) to Time 1, with no significant differences in sexual distress and relationship satisfaction. For individuals with vulvas, sexual functioning improved from Time 1 to Time 2, whereas no significant differences in sexual functioning were observed for individuals with penises. Aspects of sexual health and relational satisfaction did not sufficiently change across time points to be considered meaningful health outcome changes. Given that minimal disruptions were noted in pre-COVID-19 to COVID-19 sexuality, these results highlight the potential resiliency of individuals’ sexuality when facing sudden changes in their daily lives. Implications of COVID-19’s effects on sexual well-being and relationship satisfaction research are broadly discussed.

  相似文献   
73.
74.
75.
76.
77.
Among the various negative outcomes of intimate partner violence (IPV) exposure to children, depression symptoms are worthy of attention given the effects on well-being and long-term achievement. This study examined the effects of early childhood exposure to IPV between ages 1 and 3 on depression symptoms at age 15 and investigated whether maternal physical punishment at age 5 and peer bullying victimisation at age 9 affected the association. Data came from five waves of the Fragile Families and Child Wellbeing Study. The study was based on 20 U.S. cities with populations of over 200,000 people. The most recent wave of data collection occurs during the period between 2014 and 2017. The final analytic sample was 1,690 children. Structural equation modeling was utilised to examine the effects of exposure to IPV on physical punishment, bullying victimisation, and depression symptoms. Early exposure to IPV was associated with experiencing physical punishment at Year 5, which subsequently increased peer bullying victimisation at Year 9 and then depression symptoms at Year 15. Early exposure to IPV had a direct effect on depression symptoms at Year 15. Early exposure to IPV also had indirect effects on Year 15 depression symptoms through its effects on physical punishment and bullying victimisation. The total standardised effect of early exposure on depression symptoms was 0.06. Consistent with trauma theory and the ecobiodevelopmental framework, the results indicate that exposure to IPV appeared to have a long-term effect on children, manifested in teen depression symptoms.  相似文献   
78.
79.
80.
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