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   176646篇
  免费   12303篇
  国内免费   5685篇
耳鼻咽喉   2216篇
儿科学   3567篇
妇产科学   4665篇
基础医学   24182篇
口腔科学   4466篇
临床医学   16652篇
内科学   29452篇
皮肤病学   2983篇
神经病学   10752篇
特种医学   6284篇
外国民族医学   39篇
外科学   23033篇
综合类   15879篇
现状与发展   13篇
一般理论   37篇
预防医学   12797篇
眼科学   4418篇
药学   16464篇
  53篇
中国医学   4934篇
肿瘤学   11748篇
  2023年   1150篇
  2022年   2797篇
  2021年   3902篇
  2020年   2957篇
  2019年   2892篇
  2018年   3602篇
  2017年   3147篇
  2016年   2967篇
  2015年   4302篇
  2014年   5474篇
  2013年   5742篇
  2012年   8351篇
  2011年   8945篇
  2010年   5858篇
  2009年   4940篇
  2008年   6725篇
  2007年   6713篇
  2006年   6613篇
  2005年   5954篇
  2004年   4796篇
  2003年   4494篇
  2002年   4061篇
  2001年   7886篇
  2000年   7980篇
  1999年   6721篇
  1998年   2461篇
  1997年   1951篇
  1996年   1416篇
  1995年   1311篇
  1994年   1132篇
  1993年   1030篇
  1992年   4022篇
  1991年   4087篇
  1990年   3745篇
  1989年   3696篇
  1988年   3580篇
  1987年   3412篇
  1986年   3175篇
  1985年   3035篇
  1984年   2096篇
  1983年   1821篇
  1979年   1942篇
  1978年   1197篇
  1975年   1202篇
  1974年   1362篇
  1973年   1425篇
  1972年   1366篇
  1971年   1250篇
  1970年   1141篇
  1969年   1122篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
仝小林院士将新型冠状病毒肺炎定名为"寒湿疫",并以此理论为基础制定了初期、中期、重症期及恢复期的中医治疗方案,同时基于仝院士学术理论体系中的"脏腑风湿"理论,根据恢复期 "余毒未清,正虚邪恋"的病机特点,探讨其符合具备脏腑风湿行成3个基本要素:即外受寒湿裹挟戾气为必要外因;脏腑内虚为重要基础;邪疫伏留胶着,正邪交争为致病关键。故在辨证施治中可应用脏腑风湿理论以调理脾胃,化湿透邪,补益肺脾,顾护阳气,养阴生津。  相似文献   
5.
6.
7.
To evaluate the anthropometric indexes in subjects with varicocele compared to controls and the incidence of varicocele in different body mass index (BMI) groups for the purpose of exploring the association between varicocele and anthropometric indexes. A comprehensive literature search was conducted by using PubMed, MEDLINE, EMBASE databases and Cochrane Library up to February 2019. A systematic review and meta‐analysis was conducted by STATA, and Newcastle–Ottawa Scale was utilised for assessing risk of bias. Ultimately, 13 articles containing seven case–control studies and six cross‐sectional studies with 1,385,630 subjects were involved in our study. Pooled results demonstrated that varicocele patients had a lower BMI (WMD = ?0.77, 95% CI = ?1.03 to ?0.51) and a higher height than nonvaricocele participants, especially in grade 3 varicocele patients. Subgroup analyses showed that normal BMI individuals had a higher risk of varicocele than obese or overweight individuals and a lower risk than underweight individuals. In conclusion, this study indicates that varicocele patients have a lower BMI and a higher height than nonvaricocele participants. Moreover, men with excess bodyweight have a lower incidence of varicocele compared to normal weight or underweight people. That is to say, high BMI and adiposity protect against varicocele and high BMI is associated with a decreased risk of varicocele.  相似文献   
8.
BackgroundThe measurement of health-related quality of life (HRQoL) provides information about the perceived burden of the health condition and treatments from a lived experience. The Brisbane Burn Scar Impact Profile (caregiver report for young children, BBSIP0–8), developed in 2013, is a proxy-report measure of burn scar-specific HRQoL. The aim of this study was to report its psychometric properties in line with an evaluative purpose.MethodsCaregivers of children up to 8 years of age at risk of burn scarring were recruited into a prospective, longitudinal cohort study. Caregivers completed the BBSIP0–8, Pediatric Quality of Life Inventory and Patient Observer Scar Assessment Scale at baseline (approximately ≥85% of the total body surface area re-epithelialised), 1–2 weeks after baseline and 1-month after baseline. Psychometric properties measured included internal consistency, test–retest reliability, validity and responsiveness.ResultsEighty-six caregivers of mostly male children (55%), of a median age (IQR) of 1 year, 10 months (2 years, 1 month) and total body surface area burn of 1.5% (3.0%) were recruited. Over one third of participants were grafted and 15% had contractures or skin tightness at baseline. Internal consistency of ten item groups ranged from 0.73 to 0.96. Hypothesised correlations of changes in the BBSIP0–8 items with changes in criterion measures supported longitudinal validity (ρ ranging from ?0.73 to 0.68). The majority of item groups had acceptable reproducibility (ICC = 0.65–0.83). The responsiveness of five item groups was supported (AUC = 0.71–0.90).ConclusionThe psychometric properties tested support the use of the BBSIP0–8 as an evaluative measure of burn scar-related health-related quality of life for children aged below eight years in the early post-acute period of rehabilitation. Further investigation at longer time period after burn injury is indicated.  相似文献   
9.
10.
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