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   8109篇
  免费   498篇
  国内免费   34篇
耳鼻咽喉   60篇
儿科学   432篇
妇产科学   158篇
基础医学   941篇
口腔科学   150篇
临床医学   524篇
内科学   1817篇
皮肤病学   135篇
神经病学   541篇
特种医学   297篇
外科学   1172篇
综合类   217篇
一般理论   3篇
预防医学   525篇
眼科学   228篇
药学   895篇
中国医学   53篇
肿瘤学   493篇
  2023年   52篇
  2022年   51篇
  2021年   226篇
  2020年   160篇
  2019年   181篇
  2018年   245篇
  2017年   175篇
  2016年   188篇
  2015年   194篇
  2014年   290篇
  2013年   388篇
  2012年   514篇
  2011年   595篇
  2010年   324篇
  2009年   297篇
  2008年   482篇
  2007年   433篇
  2006年   393篇
  2005年   335篇
  2004年   347篇
  2003年   298篇
  2002年   280篇
  2001年   142篇
  2000年   127篇
  1999年   132篇
  1998年   72篇
  1997年   50篇
  1996年   47篇
  1995年   44篇
  1994年   39篇
  1993年   37篇
  1992年   88篇
  1991年   88篇
  1990年   95篇
  1989年   104篇
  1988年   89篇
  1987年   86篇
  1986年   62篇
  1985年   66篇
  1984年   74篇
  1983年   56篇
  1981年   38篇
  1980年   44篇
  1979年   58篇
  1978年   35篇
  1977年   36篇
  1975年   38篇
  1974年   37篇
  1973年   50篇
  1972年   37篇
排序方式: 共有8641条查询结果,搜索用时 15 毫秒
1.
2.
AimsWith a sudden increase in cases of mucormycosis seen in Covid ?19 patients, we conducted a retrospective analysis of all admitted patients in a tertiary care covid-19 hospital looking at incidence of mucormycosis.MethodsIntensive care unit daily rounds data stored in an electronic format was retrieved by one of the consultants, looking for incidence of mucormycosis, diabetes mellitus, adherence to protocol for steroid use, glycemic control and use of monoclonal antibodies. Also, patients follow up data base of post covid Outpatients Department was searched for cases of mucormycosis.ResultsA total of 5248 patients were admitted between March 2020 to May 2021, of which 1027 were in ICU and 4221 in wards. Of the 1027 patients admitted in Intensive care unit, 915 received steroids and 417 had diabetes as existing co-morbidity. No case of mucormycosis was reported during the stay in the hospital and during immediate outpatient department follow up. The low dose steroids were administered as per state government protocol for treating COVID 19, a nurse driven strict glycemic control regime (blood glucose level was maintained between 140 and 180 mg/dl through the admission in ICU and was achieved consistently in 842 (82%) patients, followed along with minimal use of other immunomodulatory like monoclonal antibodies.ConclusionA strict adherence to protocol of low dose steroids coupled with strict glycemic control helped in eliminating the risk and incidence of mucormycosis in a tertiary care dedicated covid-19 hospital.  相似文献   
3.
Clinical Rheumatology - Takayasu arteritis (TAK) is a less common large-vessel vasculitis which can occur in either children or adults. However, differences between pediatric-onset and adult-onset...  相似文献   
4.
Molecularly imprinted polymers are important tools for the design of sensors and other molecular recognition based analytical systems. In this paper the development of a photoelectrochemical sensor for selective bisphenol determination is reported. The sensor is based on a glass/ZnO/MIP‐Ppy structure consisting of glass modified by a ZnO layer (glass/ZnO), which is functionalized by molecularly imprinted conducting polymer polypyrrole (MIP‐Ppy). The sensitivity of the sensor to bisphenol is in the range of 0.7–12.5 µm . Selectivity tests to other bisphenolic compounds are performed. Some aspects of a photoinduced response mechanism in glass/ZnO/MIP‐Ppy nanostructures are predicted and discussed.  相似文献   
5.
Congenital heart disease (CHD) has been one of the most important contributors to neonatal mortality in the western world for the past 2 decades. With improvement in basic neonatal medical care in most parts of our country, the traditional contributors to neonatal mortality such as birth asphyxia and infections have reduced in numbers. This has hence thrust greater focus on CHD. Facilities with capability to diagnose and intervene on neonates with critical CHD are available in most states. Refinements in surgical techniques and advances in post-operative care have ensured that most neonates with critical CHD can undergo surgical or interventional procedures with very low mortality and can be expected to survive to adulthood with a reasonable quality of life. Unrecognized critical CHD could however result in death in the neonatal period. Focus has hence shifted towards sensitizing pediatricians about timely recognition of neonates with CHD. In this article, authors discuss the presentation and initial stabilization of neonates with CHD and attempt to provide practical solutions which can aid early diagnosis of CHD in the Indian scenario.  相似文献   
6.
7.
8.
9.
10.
Krishna S. Iyer 《Platelets》2020,31(4):474-482
Abstract

Platelets are small, anucleated effector cells that play an important role in linking the hemostatic and inflammatory processes in the body. Platelet function is known to be altered under various inflammatory conditions including aging. A gain in platelet function during aging can increase the risk of thrombotic events, such as stroke and acute myocardial infarction. Anti-platelet therapy is designed to reduce risk of serious cerebrovascular and cardiovascular events, but the adverse consequences of therapy, such as risk for bleeding increases with aging as well. Age-associated comorbidities such as obesity, diabetes, and hyperlipidemia also contribute to increased platelet activity and thus can enhance the risk of thrombosis. Therefore, identification of unique mechanisms of platelet dysfunction in aging and in age-associated comorbidities is warranted to design novel antiplatelet drugs. This review outlines some of the current areas of research on aging-related mechanisms of platelet hyperactivity and addresses the clinical urgency for designing anti-platelet therapies toward novel molecular targets in the aging population.  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