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   292195篇
  免费   11233篇
  国内免费   7081篇
耳鼻咽喉   2779篇
儿科学   7913篇
妇产科学   4002篇
基础医学   29968篇
口腔科学   3590篇
临床医学   25540篇
内科学   47232篇
皮肤病学   2180篇
神经病学   22147篇
特种医学   14595篇
外国民族医学   29篇
外科学   42896篇
综合类   21970篇
现状与发展   25篇
一般理论   8篇
预防医学   26270篇
眼科学   5214篇
药学   21309篇
  94篇
中国医学   7105篇
肿瘤学   25643篇
  2024年   329篇
  2023年   1506篇
  2022年   3822篇
  2021年   5399篇
  2020年   4089篇
  2019年   3593篇
  2018年   25324篇
  2017年   20694篇
  2016年   22824篇
  2015年   6266篇
  2014年   7395篇
  2013年   7674篇
  2012年   16813篇
  2011年   31110篇
  2010年   26117篇
  2009年   17644篇
  2008年   26733篇
  2007年   28657篇
  2006年   7261篇
  2005年   8073篇
  2004年   7820篇
  2003年   8592篇
  2002年   6170篇
  2001年   3077篇
  2000年   2612篇
  1999年   1972篇
  1998年   1197篇
  1997年   1192篇
  1996年   835篇
  1995年   733篇
  1994年   649篇
  1993年   378篇
  1992年   505篇
  1991年   466篇
  1990年   460篇
  1989年   377篇
  1988年   321篇
  1987年   273篇
  1986年   215篇
  1985年   176篇
  1984年   111篇
  1983年   101篇
  1982年   66篇
  1981年   41篇
  1980年   69篇
  1979年   52篇
  1974年   52篇
  1938年   60篇
  1932年   57篇
  1930年   46篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
Research on physical activity (PA) by level of acculturation in Hispanic children is limited and findings have been mixed. We examined PA participation by primary language used with parents in a representative sample of 4th, 8th, and 11th grade Texas public school students. Mixed-effects regression models were conducted using cross-sectional data from the 2004–2005 School Physical Activity and Nutrition Study (n = 22,049). Self-reported PA was compared among three language-ethnic groups: Spanish-Hispanic (SH) (referent); English-Hispanic (EH); and English-Other (EO). EH and/or EO girls were generally between 1.25 and 2.58 [OR] times more likely to participate in PA across grade levels, with the largest differences found for school sports in 8th grade girls. EH and EO 8th grade boys were 1.71 (CI: 1.40, 2.10) and 2.06 (CI: 1.68, 2.51) times, respectively, more likely to participate in school sports. Findings indicate important disparities in Spanish-speaking Hispanic children’s PA participation.  相似文献   
72.

Introduction  

Planning human resources for health (HRH) is a complex process for policy-makers and, as a result, many countries worldwide swing from surplus to shortage. In-depth case studies can help appraising the challenges encountered and the solutions implemented. This paper has two objectives: to identify the key challenges in HRH planning in Belgium and to formulate recommendations for an effective HRH planning, on the basis of the Belgian case study and lessons drawn from an international benchmarking.  相似文献   
73.

Objective  

The aim of the project was to assess the effectiveness and safety of weekly epoetin-beta (EB) in patients with gastrointestinal cancer (GIC) subjected to concomitant chemoradiotherapy (CCTRT).  相似文献   
74.
Extravasation of chemotherapy is a feared complication of anticancer therapy. The accidental leakage of cytostatic agents into the perivascular tissues may have devastating short-term and long-term consequences for patients. In recent years, the increased focus on chemotherapy extravasation has led to the development of international guidelines that have proven useful tools in daily clinical practice. Moreover, the tissue destruction in one of the most dreaded types of extravasation (ie, anthracycline extravasation) now can effectively be prevented with a specific antidote, dexrazoxane.  相似文献   
75.
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   
76.

Background  

Bortezomib, a proteasome-specific inhibitor, has emerged as a promising cancer therapeutic agent. However, development of resistance to bortezomib may pose a challenge to effective anticancer therapy. Therefore, characterization of cellular mechanisms involved in bortezomib resistance and development of effective strategies to overcome this resistance represent important steps in the advancement of bortezomib-mediated cancer therapy.  相似文献   
77.
目的:寻找能提高治疗周围性面瘫疗效的适宜的电针波型.方法:将147例周围性面瘫患者随机分为治疗组和对照组,治疗组进行穴位分组,电针波型先用连续波后用疏密波治疗;对照组穴位不分组,并单纯采用连续波治疗.结果:两组的总有效率和痊愈所用时间经统计学处理,差异有非常显著性意义(P<0.01).结论:在电针治疗周围性面瘫中,将疏密波和连续波配合使用,效果显著优于单纯使用连续波者.  相似文献   
78.

Background  

The fibromyalgia syndrome (FMS) is suggested to be a manifestation of depression or affective spectrum disorder. We measured the cognitive style of patients with FMS to assess personality styles in 44 patients with fibromyalgia syndrome (FMS) by comparing them with 43 patients with major depressive disorder (MDD) and 41 healthy controls (HC).  相似文献   
79.
80.
试析陆懋修从阳明论治温病之特色   总被引:1,自引:0,他引:1  
陆懋修(1818-1886),又名免研,字九芝,号江左下工,又号林屋山人,江苏元和(今江苏吴县)人,为清代后期著名的医学家。陆氏出身于官宦之家,儒医兼通,陆氏秉承家学,对先人的医学成就颇为敬重。他曾三十余年坚持潜心研究《内经》、《伤寒》等医学经典著作,终于贯通医理而成为一代名医。陆氏一生博览群书之余,著述不断,  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