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   1239201篇
  免费   74196篇
  国内免费   1367篇
耳鼻咽喉   16066篇
儿科学   40614篇
妇产科学   31457篇
基础医学   169063篇
口腔科学   30992篇
临床医学   106573篇
内科学   232541篇
皮肤病学   25033篇
神经病学   97206篇
特种医学   51431篇
外国民族医学   202篇
外科学   190403篇
综合类   23957篇
现状与发展   1篇
一般理论   264篇
预防医学   91697篇
眼科学   27120篇
药学   95202篇
  7篇
中国医学   3431篇
肿瘤学   81504篇
  2019年   7803篇
  2018年   32092篇
  2017年   25300篇
  2016年   28577篇
  2015年   12135篇
  2014年   16008篇
  2013年   22908篇
  2012年   37132篇
  2011年   52213篇
  2010年   36700篇
  2009年   28765篇
  2008年   48457篇
  2007年   52677篇
  2006年   33197篇
  2005年   33099篇
  2004年   32975篇
  2003年   32708篇
  2002年   29885篇
  2001年   60287篇
  2000年   61874篇
  1999年   51111篇
  1998年   12642篇
  1997年   11202篇
  1996年   11099篇
  1995年   10433篇
  1994年   9442篇
  1993年   8922篇
  1992年   37837篇
  1991年   36373篇
  1990年   35874篇
  1989年   34365篇
  1988年   30933篇
  1987年   30039篇
  1986年   28255篇
  1985年   26484篇
  1984年   19213篇
  1983年   16145篇
  1982年   8863篇
  1979年   17043篇
  1978年   11420篇
  1977年   10242篇
  1976年   8851篇
  1975年   10077篇
  1974年   11674篇
  1973年   11278篇
  1972年   10760篇
  1971年   10095篇
  1970年   9276篇
  1969年   8961篇
  1968年   7939篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
1.
2.
Quality of Life Research - The COVID-19 pandemic might add to the stressors experienced by people living with rheumatic diseases. This study aimed to examine rheumatic patients’ functional...  相似文献   
3.
Molnár  B.  Aroca  S.  Dobos  A.  Orbán  K.  Szabó  J.  Windisch  P.  Stähli  A.  Sculean  A. 《Clinical oral investigations》2022,26(12):7135-7142
Clinical Oral Investigations - To evaluate t he long-term outcomes following treatment of RT 1 multiple adjacent gingival recessions (MAGR) using the modified coronally advanced tunnel (MCAT) with...  相似文献   
4.
5.
6.
7.
ABSTRACT

The lack of stable housing can impair access and continuity of care for patients living with human immunodeficiency virus (HIV). This study investigated the relationship between housing status assessed at multiple time points and several core HIV-related outcomes within the same group of HIV patients experiencing homelessness. Patients with consistently stable housing (CSH) during the year were compared to patients who lacked CSH (non-CSH group). The study outcomes included HIV viral load (VL), CD4 counts, and health care utilization. Multivariable and propensity weighted analyses were used to assess outcomes adjusting for potential group differences. Of 208 patients, 88 (42%) had CSH and 120 (58%) were non-CSH. Patients with CSH had significantly higher proportion of VL suppression and higher mean CD4 counts. The frequency of nurse visits in the CSH group was less than a half of that in the non-CSH group. Patients with CSH were less likely to be admitted to the medical respite facility, and if admitted, their length of stay was about a half of that for the non-CSH group. Our study findings show that patients with CSH had significantly better HIV virologic control and immune status as well as improved health care utilization.  相似文献   
8.
9.
Inflammatory bowel disease (IBD) is a chronic disease that requires chronic treatment throughout the evolution of the disease, with a complex physiopathology that entails great challenges for the development of new and specific treatments for ulcerative colitis and Crohn´s disease. The anti-tumor necrosis factor alpha therapy has impacted the clinical course of IBD in those patients who do not respond to conventional treatment, so there is a need to develop new therapies and markers of treatment response. Various pathways involved in the development of the disease are known and the new therapies have focused on blocking the inflammatory process at the gastrointestinal level by oral, intravenous, subcutaneous, and topical route. All these new therapies can lead to more personalized treatments with higher success rates and fewer relapses. These treatments have not only focused on clinical remission, but also on achieving macroscopic changes at the endoscopic level and microscopic changes by achieving mucosal healing. These treatments are mainly based on modifying signaling pathways, by blocking receptors or ligands, reducing cell migration and maintaining the integrity of the epithelial barrier. Therefore, this review presents the efficacy and safety of the new treatments that are currently under study and the advances that have been made in this area in recent years.  相似文献   
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