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   30278篇
  免费   1786篇
  国内免费   155篇
耳鼻咽喉   354篇
儿科学   788篇
妇产科学   619篇
基础医学   4491篇
口腔科学   1459篇
临床医学   2605篇
内科学   6877篇
皮肤病学   806篇
神经病学   2555篇
特种医学   694篇
外科学   3047篇
综合类   70篇
一般理论   12篇
预防医学   2917篇
眼科学   667篇
药学   2015篇
中国医学   157篇
肿瘤学   2086篇
  2024年   38篇
  2023年   292篇
  2022年   700篇
  2021年   1196篇
  2020年   730篇
  2019年   972篇
  2018年   1123篇
  2017年   786篇
  2016年   928篇
  2015年   1025篇
  2014年   1356篇
  2013年   1697篇
  2012年   2645篇
  2011年   2714篇
  2010年   1458篇
  2009年   1168篇
  2008年   1984篇
  2007年   1914篇
  2006年   1758篇
  2005年   1635篇
  2004年   1450篇
  2003年   1266篇
  2002年   1054篇
  2001年   229篇
  2000年   202篇
  1999年   211篇
  1998年   157篇
  1997年   130篇
  1996年   115篇
  1995年   98篇
  1994年   83篇
  1993年   80篇
  1992年   117篇
  1991年   101篇
  1990年   96篇
  1989年   76篇
  1988年   78篇
  1987年   65篇
  1986年   71篇
  1985年   66篇
  1984年   53篇
  1983年   33篇
  1982年   28篇
  1981年   22篇
  1979年   28篇
  1977年   14篇
  1975年   17篇
  1974年   16篇
  1973年   17篇
  1972年   15篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
Access to good-quality health services is crucial for the improvement of many health outcomes, such as those targeted by the Millennium Development Goals (MDGs) adopted by the international community in 2000. The health-related MDGs cannot be achieved if vulnerable populations do not have access to skilled personnel and to other necessary inputs. This paper focuses on the geographical dimension of access and on one of its critical determinants: the availability of qualified personnel. The objective of this paper is to offer a better understanding of the determinants of geographical imbalances in the distribution of health personnel, and to identify and assess the strategies developed to correct them. It reviews the recent literature on determinants, barriers and the effects of strategies that attempted to correct geographical imbalances, with a focus on empirical studies from developing and developed countries. An analysis of determinants of success and failures of strategies implemented, and a summary of lessons learnt, is included.  相似文献   
6.
7.
Pain control is one of the most challenging aspects in the management of chronic pancreatitis. Total pancreatectomy can successfully relieve the intractable abdominal pain in these patients but will inevitably result in insulin-dependent diabetes. Islet autotransplantation aims to preserve, as far as possible, the insulin secretory function of the islet cell mass thereby reducing (or even removing) the requirement for exogenous insulin administration after a total pancreactomy. Despite the relatively small number of centres able to perform these procedures, there are important technical variations in the details of their approaches. The aim of this review is to provide details of the current surgical practice for total pancreatectomy combined with islet autotransplantation, and outline the potential advantages and disadvantages of the variations adopted in each centre.  相似文献   
8.
9.
Protracted or recurrent pain and inflammation in the early neonatal period may cause long-lasting changes in central neural function. However, more research is necessary to better characterize the long-term behavioral sequelae of such exposure in the neonatal period. Objectives: (1) to study whether timing of postnatal exposure to persistent inflammation alters responsiveness to thermal pain in the adult animal; (2) to assess whether animals experiencing early postnatal chronic inflammation display altered anxiety related behavior; (3) to study the importance of genetic background. Newborn mice (outbred strain, CD1 and F1 hybrid strain, B6C3F1) received an injection of Complete Freund's Adjuvant (CFA) or saline on either postnatal day 1 or 14 (PND1; PND14) into the left hind paw. Pain to radiant heat and anxiety were examined in 12-week-old adult animals. Adult baseline PWL was significantly decreased in CD1 mice exposed to CFA on PND 1 and 14 as compared to their saline treated counterparts. B6C3F1 mice exposed to CFA on PND14 showed markedly reduced baseline PWL compared to the PND14 saline group. Persistent inflammation experienced by B6C3F1 mice on PND1 failed to affect baseline adult thermal responsiveness. Adult mice, CD1 and B6C3F1, displayed low anxiety traits only if they had been exposed to persistent inflammation on PND1 and not on PND14. Our research suggests a role for genetic background in modulating long-term behavioral consequences of neonatal persistent inflammation: the data support the hypothesis that pain experienced very early in life differentially affects adult behavioral and emotional responsiveness in outbred (CD1) and hybrid mice (B6C3F1).  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