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   30449篇
  免费   2068篇
  国内免费   159篇
耳鼻咽喉   250篇
儿科学   822篇
妇产科学   701篇
基础医学   4061篇
口腔科学   483篇
临床医学   2794篇
内科学   6301篇
皮肤病学   425篇
神经病学   2632篇
特种医学   997篇
外国民族医学   2篇
外科学   4379篇
综合类   368篇
一般理论   39篇
预防医学   3193篇
眼科学   591篇
药学   2015篇
中国医学   90篇
肿瘤学   2533篇
  2023年   158篇
  2022年   251篇
  2021年   748篇
  2020年   475篇
  2019年   608篇
  2018年   812篇
  2017年   576篇
  2016年   602篇
  2015年   721篇
  2014年   1006篇
  2013年   1383篇
  2012年   2012篇
  2011年   2187篇
  2010年   1279篇
  2009年   1058篇
  2008年   1776篇
  2007年   1996篇
  2006年   1784篇
  2005年   1758篇
  2004年   1749篇
  2003年   1625篇
  2002年   1554篇
  2001年   702篇
  2000年   602篇
  1999年   613篇
  1998年   343篇
  1997年   249篇
  1996年   240篇
  1995年   239篇
  1994年   172篇
  1993年   175篇
  1992年   322篇
  1991年   286篇
  1990年   282篇
  1989年   282篇
  1988年   219篇
  1987年   172篇
  1986年   173篇
  1985年   167篇
  1984年   144篇
  1983年   118篇
  1982年   97篇
  1981年   96篇
  1980年   50篇
  1979年   66篇
  1977年   51篇
  1976年   60篇
  1975年   57篇
  1974年   57篇
  1968年   50篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
3.
Clinical Oral Investigations - The aim of this study was the analysis of WNT10A variants in seven families of probands with various forms of tooth agenesis and self-reported family history of...  相似文献   
4.
5.
6.
7.
8.
9.
Purpose: To evaluate the rate and onset of intraoperative and postoperative complications post-phacoemulsification. Methods: One hundred sixty-two eyes of 145 patients with uveitis who underwent phacoemulsification between 2006 and 2009 were identified through surgical record review. Fifty-nine eyes of 46 patients met the inclusion criteria. Hazard ratio (HR) and Kaplan-Meier survival probability were calculated for each class of uveitis. Results: Macular edema (ME) resulted to be associated to chronic postoperative inflammation (r?=?0.6; p?=?0.00) and mostly related to patients who presented more than one postoperative relapse/year (r?=?0.2; p?=?0.02). Fuchs uveitis resulted to be a risk factor for posterior capsule opacification (PCO) (HR 3.36 IC95%1.0-10.5; p?=?0.03). Hypotony and elevated intraocular pressure (IOP) were detected in the anterior uveitis group (0.02 EY). Conclusion: The HR to develop ME was significantly related to chronic anterior uveitis. PCO and elevated IOP are most frequent in Fuchs uveitis. The postoperative visual acuity result was good among all the uveitis groups.  相似文献   
10.
Parhiala  P.  Ranta  K.  Gergov  V.  Kontunen  J.  Law  R.  La Greca  A. M.  Torppa  M.  Marttunen  M. 《School mental health》2020,12(2):265-283

In order to offer early and accessible treatment for adolescents with depression, brief and effective treatments in adolescents’ everyday surroundings are needed. This randomized controlled trial studied the preliminary effectiveness, feasibility, and acceptability of interpersonal counseling (IPC) and brief psychosocial support (BPS) in school health and welfare services. The study was conducted in the 28 lower secondary schools of a large city in Southern Finland, randomized to provide either IPC or BPS. Help-seeking 12–16-year-old adolescents with mild-to-moderate depression, with and without comorbid anxiety, were included in the study. Fifty-five adolescents received either 6 weekly sessions of IPC or BPS and two follow-up sessions. Outcome measures included self- and clinician-rated measures of depression, global functioning, and psychological distress/well-being. To assess feasibility and acceptability of the treatments, adolescents’ and counselors’ treatment compliance and satisfaction with treatment were assessed. Both treatments were effective in reducing depressive disorders and improving adolescents’ overall functioning and well-being. At post-treatment, in both groups, over 50% of adolescents achieved recovery based on self-report and over 70% based on observer report. Effect sizes for change were medium or large in both groups at post-treatment and increased at 6-month follow-up. A trend indicating greater baseline symptom severity among adolescents treated in the IPC-providing schools was observed. Adolescents and counselors in both groups were satisfied with the treatment, and 89% of the adolescents completed the treatments and follow-ups. This trial suggests that both IPC and BPS are feasible, acceptable, and effective treatments for mild-to-moderate depression in the school setting. In addition, IPC seems effective even if comorbid anxiety exists. Our study shows that brief, structured interventions, such as IPC and BPS, are beneficial in treating mild-to-moderate depression in school settings and can be administered by professionals working at school.

Trial registrationhttp://www.clinicaltrials.gov. Unique identifier: NCT03001245.

  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