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   14268篇
  免费   1328篇
  国内免费   126篇
耳鼻咽喉   196篇
儿科学   404篇
妇产科学   274篇
基础医学   1585篇
口腔科学   308篇
临床医学   1772篇
内科学   2860篇
皮肤病学   318篇
神经病学   1233篇
特种医学   383篇
外国民族医学   2篇
外科学   2364篇
综合类   396篇
一般理论   16篇
预防医学   1489篇
眼科学   370篇
药学   892篇
中国医学   21篇
肿瘤学   839篇
  2023年   116篇
  2022年   154篇
  2021年   388篇
  2020年   274篇
  2019年   317篇
  2018年   392篇
  2017年   324篇
  2016年   356篇
  2015年   403篇
  2014年   581篇
  2013年   673篇
  2012年   836篇
  2011年   821篇
  2010年   527篇
  2009年   542篇
  2008年   729篇
  2007年   657篇
  2006年   623篇
  2005年   628篇
  2004年   492篇
  2003年   491篇
  2002年   465篇
  2001年   410篇
  2000年   440篇
  1999年   366篇
  1998年   179篇
  1997年   168篇
  1996年   143篇
  1995年   148篇
  1994年   106篇
  1993年   80篇
  1992年   201篇
  1991年   195篇
  1990年   228篇
  1989年   164篇
  1988年   157篇
  1987年   161篇
  1986年   140篇
  1985年   143篇
  1984年   112篇
  1983年   92篇
  1982年   94篇
  1981年   69篇
  1979年   108篇
  1978年   89篇
  1977年   64篇
  1976年   68篇
  1975年   73篇
  1973年   82篇
  1972年   71篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
A 48-year-old man presented with acute chest pain and a greatly increased platelet count. Emergency coronary angiographc revealed thrombotic occlusion of the right coronary artery. Coronary angioplasty and stenting were successfully combined with intracoronary abciximab administration. Due to inadequate postinterventional platelet inhibition an intensified dual antiplatelet therapy with acetylsalicylic acid (ASS) and clopidogrel was applied to prevent stent thrombosis. Due to the thrombo-embolic complication and a platelet count over 1 million/µl a cytoreductive treatment with hydroxyurea was initiated.  相似文献   
44.
Based on the hypothesis that condensation products of neurotransmitters with aldehydes are involved in the pathogenesis of alcoholism, aromatic beta-carbolines (norharman and harman) were measured in the blood plasma of alcoholics and nonalcoholics. The identity of the extracted compounds was confirmed by various elution conditions of the high performance liquid chromatography (HPLC), newly developed radioreceptor assays, and the mass spectrum of norharman. The levels of norharman and harman in nonalcoholics were unchanged after a load with ethanol (1 g/kg body weight). The norharman levels of the alcoholics were significantly higher than that of the nonalcoholic controls (99.5 +/- 26.6 pg/ml vs. 26.9 +/- 10.7 pg/ml; p less than 0.001) and did not change significantly during a 3-week detoxication period. In the subgroup of alcoholics with delirium or hallucinosis, a slight increase of norharman during detoxication could be detected while in alcoholics with vegetative withdrawal symptoms norharman levels dropped slightly over time (p = 0.07). No difference was found with respect to harman between nonalcoholics and alcoholics. These results suggest disturbed regulatory processes in the formation and/or metabolism of norharman in alcoholics. Further investigations are needed to reveal a possible marker function of norharman in alcoholic patients.  相似文献   
45.
46.
47.
Respiratory monitoring   总被引:1,自引:0,他引:1  
Scientific advances over the last 20 years have enabled us to monitor the respiratory status of our patients beyond the age-old methods taught in physical diagnosis. It is now possible to measure almost every parameter of ventilation, oxygen transport, and CO2 transport, thus enhancing patient safety and patient care.  相似文献   
48.
CONTEXT: Health disparities between rural and urban communities are well documented. There are many suggested causes and many proposed solutions but no one-size-fits-all answer. The most successful community interventions have been introduced by communities themselves. However, before communities invest in such interventions, each group must identify and prioritize their needs. PURPOSE: This article describes the Hoshin facilitation method as a practical option assisting communities in assessing their needs and gaining consensus for future steps. METHODS: Thirty-four meetings were held in 11 rural communities in Hawaii using the Hoshin process to identify factors that impact rural health. Themes were identified by constant comparative analysis and thematic frequency described. Commonality of responses between communities was examined. Informal feedback was collected from meeting participants. FINDINGS: There was a great deal of commonality between community responses, with economic factors, drug use, lack of community leadership, lack of health care services and access to services, lack of healthy activities for youth, and poor public education being the most common issues noted. Group involvement in the meetings was high, and the facilitation method received positive feedback from participants. CONCLUSIONS: The Hoshin facilitation method is a very useful tool to help communities rapidly identify and prioritize areas for programmatic attention.  相似文献   
49.
50.
A report of a patient with an azygos lobe and an associated anomalous azygos vein covering the upper thoracic sympathetic chain. This anomaly poses a significant risk during the procedure of endoscopic thoracic sympathectomy. A chest X-ray is useful in detecting this anomaly and alerting the surgeon to potential problems.  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