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   9015篇
  免费   640篇
  国内免费   21篇
耳鼻咽喉   64篇
儿科学   325篇
妇产科学   215篇
基础医学   1507篇
口腔科学   118篇
临床医学   1101篇
内科学   1786篇
皮肤病学   143篇
神经病学   1084篇
特种医学   94篇
外科学   892篇
综合类   66篇
一般理论   14篇
预防医学   1091篇
眼科学   59篇
药学   470篇
中国医学   15篇
肿瘤学   632篇
  2023年   53篇
  2022年   90篇
  2021年   239篇
  2020年   138篇
  2019年   237篇
  2018年   235篇
  2017年   165篇
  2016年   200篇
  2015年   226篇
  2014年   294篇
  2013年   463篇
  2012年   686篇
  2011年   676篇
  2010年   363篇
  2009年   300篇
  2008年   538篇
  2007年   626篇
  2006年   567篇
  2005年   556篇
  2004年   505篇
  2003年   489篇
  2002年   455篇
  2001年   151篇
  2000年   73篇
  1999年   95篇
  1998年   110篇
  1997年   89篇
  1996年   94篇
  1995年   62篇
  1994年   59篇
  1993年   73篇
  1992年   62篇
  1991年   44篇
  1990年   52篇
  1989年   42篇
  1988年   50篇
  1987年   40篇
  1986年   34篇
  1985年   29篇
  1984年   45篇
  1983年   25篇
  1982年   46篇
  1981年   50篇
  1980年   26篇
  1979年   16篇
  1978年   23篇
  1977年   19篇
  1976年   16篇
  1971年   12篇
  1970年   11篇
排序方式: 共有9676条查询结果,搜索用时 15 毫秒
1.
International Journal of Clinical Oncology - Immune-checkpoint inhibitors (ICIs) are standard treatments for metastatic non-small cell lung cancer (NSCLC). Patients with poor performance status...  相似文献   
2.
Caring for patients with end-stage kidney disease (ESKD) in the United States is challenging, due in part to the complex epidemiology of the disease's progression as well as the ways in which care is delivered. As CKD progresses toward ESKD, the number of comorbidities increases and care involves multiple healthcare providers from multiple subspecialties. This occurs in the context of a fragmented US healthcare delivery system that is traditionally siloed by provider specialty, organization, as well as systems of payment and administration. This article describes the role of care fragmentation in the delivery of optimal ESKD care and identifies research gaps in the evidence across the continuum of care. We then consider the impact of care fragmentation on ESKD care from the patient and health system perspectives and explore opportunities for system-level interventions aimed at improving care for patients with ESKD.  相似文献   
3.
4.
5.
A review of the literature was performed to explore the association between prenatal education and rates of primary cesarean birth for women at low risk for cesarean birth. Most women who are nulliparous with a singleton fetus of term gestational age and in the vertex position are considered to be at low risk and favorable for a vaginal birth, yet the cesarean birth rate for women at low risk was 25.6% in 2019. It has been suggested that the rise in the cesarean birth rate among low-risk women may not be due to medical indications but, rather, to nonmedical factors, such as a provider’s or woman’s preference or lack of prenatal education. Evidence from this literature review supports the premise that prenatal education classes should be routinely incorporated into maternity care in an effort to reduce cesarean birth rates for the low-risk population.  相似文献   
6.
7.
8.
Hypoxia is related to poor prognosis because it is associated to chemo-and radioresistance. During recent years the evolution of imaging methods like PET/CT and MRI has meant the appearance of new perspectives with direct implications in radiation therapy. We discuss previous experiences in staging, planning and in the follow-up process with these techniques for measuring tumour hypoxia.  相似文献   
9.
Infants living in an orphanage (n = 22) in Romania were assessed on the Test of Sensory Functions in Infants (TSFI). Testing of the institutionalized infants was done before and 6 months after an enriched caregiver intervention program. Results showed significant changes in areas of reactivity to tactile deep pressure, visual-tactile integration, oculomotor control, reactivity to vestibular stimulation and total test responses. No significant changes occurred in the area of adaptive motor functions. Effects of sensory deprivation resulting from institutional settings and changes that can occur from enriched caregiver environments are discussed.  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