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   55586篇
  免费   3590篇
  国内免费   109篇
耳鼻咽喉   534篇
儿科学   2314篇
妇产科学   1520篇
基础医学   6955篇
口腔科学   539篇
临床医学   8575篇
内科学   9524篇
皮肤病学   759篇
神经病学   5330篇
特种医学   976篇
外科学   4645篇
综合类   591篇
一般理论   109篇
预防医学   7758篇
眼科学   759篇
药学   3649篇
中国医学   61篇
肿瘤学   4687篇
  2023年   267篇
  2022年   370篇
  2021年   1020篇
  2020年   695篇
  2019年   1055篇
  2018年   1202篇
  2017年   979篇
  2016年   1063篇
  2015年   1239篇
  2014年   1716篇
  2013年   2733篇
  2012年   3934篇
  2011年   4243篇
  2010年   2357篇
  2009年   2128篇
  2008年   3836篇
  2007年   4083篇
  2006年   3928篇
  2005年   4084篇
  2004年   3880篇
  2003年   3650篇
  2002年   3358篇
  2001年   476篇
  2000年   355篇
  1999年   482篇
  1998年   687篇
  1997年   608篇
  1996年   483篇
  1995年   484篇
  1994年   427篇
  1993年   339篇
  1992年   249篇
  1991年   214篇
  1990年   188篇
  1989年   200篇
  1988年   191篇
  1987年   172篇
  1986年   168篇
  1985年   171篇
  1984年   191篇
  1983年   172篇
  1982年   217篇
  1981年   208篇
  1980年   156篇
  1979年   96篇
  1978年   113篇
  1977年   55篇
  1976年   58篇
  1975年   46篇
  1974年   68篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
41.
Application of breast cancer risk prediction models in clinical practice.   总被引:11,自引:0,他引:11  
Breast cancer risk assessment provides an estimation of disease risk that can be used to guide management for women at all levels of risk. In addition, the likelihood that breast cancer risk is due to specific genetic susceptibility (such as BRCA1 or BRCA2 mutations) can be determined. Recent developments have reinforced the clinical importance of breast cancer risk assessment. Tamoxifen chemoprevention as well as prevention studies such as the Study of Tamoxifen and Raloxifene are available to women at increased risk of developing breast cancer. In addition, specific management strategies are now defined for BRCA1 and BRCA2 mutation carriers. Risk may be assessed as the likelihood of developing breast cancer (using risk assessment models) or as the likelihood of detecting a BRCA1 or BRCA2 mutation (using prior probability models). Each of the models has advantages and disadvantages, and all need to be interpreted in context. We review available risk assessment tools and discuss their application. As illustrated by clinical examples, optimal counseling may require the use of several models, as well as clinical judgment, to provide the most accurate and useful information to women and their families.  相似文献   
42.
We report the MRI features in a series of four patients with primary angiitis of the central nervous system (PACNS). Based on MRI features, clinical presentation, paraclinical investigations and laboratory tests, including cerebrospinal fluid (CSF) analysis, various differentials were considered. In two patients with MRI findings of cortical, subcortical and deep white matter lesions, lack of mass effect, focal areas of bleed and heterogeneous parenchymal, leptomeningeal or pial enhancement and a normal magnetic resonance angiography, a differential diagnosis of primary angiitis of the CNS was also considered. In all patients, an open brain biopsy was advised to establish a definitive diagnosis of PACNS. Here, we briefly discuss the MRI features, correlation with clinical presentation and paraclinical parameters for the diagnosis of this entity. We also briefly review the literature.  相似文献   
43.
44.
45.
46.
This paper reports the proceedings of the discussion panel assigned to look at clinical aspects of quality in emergency medicine. One of the seven stated objectives of the Academic Emergency Medicine consensus conference on quality in emergency medicine was to educate emergency physicians regarding quality measures and quality improvement as essential aspects of the practice of emergency medicine. Another topic of interest was a discussion of the value of information technology in facilitating quality care in the clinical practice of emergency medicine. It is important to note that this is not intended to be a comprehensive review of this extensive topic, but instead is designed to report the discussion that occurred at this session of the consensus conference.  相似文献   
47.
48.
49.
Pressure ulcers are a high-risk, high-volume, and high-cost problem for persons with disabilities. This article describes four tools published in the literature and reports the validity, reliability, strengths, and limitations of each. These tools include the Pressure Ulcer Scale for Healing (PUSH), the Pressure Sore Status Tool (PSST), the Sussman Wound Healing Tool (SWHT), and the Sessing Scale. Rehabilitation nurses should use a consistent framework with accurate quantification to assess, document, and monitor changes in pressure ulcers over time. Such a measurement tool must prove valid for the disabled population in which the tool is used. This will enable healthcare providers to communicate more effectively and evaluate the therapeutic plan of care.  相似文献   
50.
Metabolic syndrome is associated with increased risk for cardiovascular and cerebrovascular disease. The World Health Organization and National Cholesterol Education Program Adult Treatment Panel III have identified physiologic abnormalities associated with metabolic syndrome, including impaired glucose metabolism, high blood pressure, elevated cholesterol levels, and abdominal obesity. It is estimated that 47 million Americans have metabolic syndrome. A variety of therapies may help reduce the incidence and risk, including diet, weight loss, physical exercise, glycemic control, and pharmacological treatments. Nursing care is focused on developing an individualized plan of care that includes family members and providing education, psychosocial support, close monitoring, and continued follow-up to ensure adherence and success in achieving patient outcomes.  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