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   1404篇
  免费   85篇
  国内免费   14篇
耳鼻咽喉   48篇
儿科学   46篇
妇产科学   46篇
基础医学   141篇
口腔科学   30篇
临床医学   110篇
内科学   340篇
皮肤病学   15篇
神经病学   81篇
特种医学   59篇
外科学   245篇
综合类   57篇
预防医学   84篇
眼科学   29篇
药学   96篇
中国医学   3篇
肿瘤学   73篇
  2024年   1篇
  2023年   18篇
  2022年   74篇
  2021年   90篇
  2020年   58篇
  2019年   66篇
  2018年   88篇
  2017年   70篇
  2016年   50篇
  2015年   58篇
  2014年   65篇
  2013年   99篇
  2012年   126篇
  2011年   94篇
  2010年   67篇
  2009年   52篇
  2008年   55篇
  2007年   51篇
  2006年   52篇
  2005年   60篇
  2004年   62篇
  2003年   34篇
  2002年   31篇
  2001年   9篇
  2000年   12篇
  1999年   9篇
  1998年   4篇
  1997年   6篇
  1996年   4篇
  1994年   5篇
  1993年   3篇
  1992年   3篇
  1991年   1篇
  1990年   3篇
  1989年   1篇
  1988年   1篇
  1987年   3篇
  1986年   1篇
  1985年   3篇
  1984年   4篇
  1983年   2篇
  1981年   1篇
  1980年   1篇
  1979年   1篇
  1978年   2篇
  1977年   1篇
  1976年   1篇
  1966年   1篇
排序方式: 共有1503条查询结果,搜索用时 15 毫秒
11.
12.
Robotic reconstruction of the retrocaval ureter is gaining momentum as the method of choice for surgically treating this rare condition. Maintaining the retrocaval ureteric segment further facilitates the procedure. We report a case of a 23-year-old man who underwent intraperitoneal robotic resection anastomosis and repositioning of the retrocaval ureter. We also discuss the advantages of this technique.  相似文献   
13.
We used a lentiviral vector bearing the viral spike protein to detect neutralizing antibodies against Middle East respiratory syndrome coronavirus (MERS-CoV) in persons from the Eastern Province of Saudi Arabia. None of the 268 samples tested displayed neutralizing activity, which suggests that MERS-CoV infections in humans are infrequent in this province.  相似文献   
14.
Objective: To assess the effect of prophylactic corticosteroids administration at 37 weeks before term elective cesarean section (CS) in reducing neonatal respiratory morbidity and admission to neonatal intensive care unit (NICU).

Methods: This randomized trial was conducted focusing on women subjected to term elective CS. Women who were eligible for the study were divided into two groups. At 37 weeks' gestation; study group received two intramuscular doses of 12?mg dexamethasone 24?h apart, while the control group given the usual care without steroids. Outcome measures were adverse neonatal respiratory outcomes (respiratory distress syndrome (RDS) and transient tachypnea of the newborn (TTN)) and rates of admission to NICU.

Results: Neonates in the treatment group had lower overall incidence of respiratory distress morbidity 7.9% versus 23% when compared to the control group. The main morbidity was TTN (7% in study versus 19.6% in control group). There was significantly lower incidence of both mild and moderate degrees of respiratory distress in the study group (7 and 0.9%, respectively) compared to 17 and 5.3% in the control group. The most significant benefit of steroid administration was noted in those babies 37–37+6 weeks.

Conclusion: Antenatal administration of steroids at 37 weeks appears to be beneficial in reducing neonatal respiratory morbidity in women undergoing elective term CS.  相似文献   

15.
Recent uprisings in the Arab world and a full‐scale war in Syria are widely viewed as popular demand for political voice against repressive regimes. However, growing economic inequalities and serious economic dysfunction played a role as trigger for conflict than is commonly accepted. Tunisia, Egypt and Syria all implemented policies of liberalization over the past two decades, leading to the worsening of living standards for the majority. The various forms of liberalization played a significant role in embedding social division and discontent whose outcomes affected other countries of the region with the onset of market reforms in nascent welfare states. Egypt, for example, was viewed by the World Bank as an economic ‘best performer’, despite regular riots over food prices, job losses and land expropriation for tourism. Tunisia was praised by donors just prior to the uprising (in 2010), for ‘weathering well’ the global economic downturn through ‘sound macroeconomic management’. In Syria, the market economy made its mark over the 90s, but macroeconomic adjustment policies were implemented in a bilateral agreement with the European Union and approved by the International Monetary Fund in 2003. The economic stabilization programme that followed had limited concern for social impacts such as jobs losses, price rises and national debt, which ultimately caused immense hardship for the population at large, acting as a trigger for the initial uprising in 2011, prior to its transformation into a fully blown conflict. This article focuses on reforms implemented in the health sector and sets these in the context of the current political economy of Syria. It suggests that a protective approach to public health services during and in the aftermath of conflict may increase the possibilities of reconstruction and reconciliation between warring sides. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
16.
17.
The common carotid artery (CCA) and extracranial internal carotid artery are subject to a wide variety of non-atheromatous pathologies. These entities are often overshadowed in both research and clinical realms by atherosclerotic disease. Nevertheless, non-atherosclerotic disease of the carotid arteries may have profound, even devastating, neurologic consequences. Hence, this review will cover both common and uncommon forms of extracranial carotid artery pathologies in a pictorial format, in order to aid the diagnostician in identifying and differentiating such pathologies.  相似文献   
18.
19.
20.
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