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   13129篇
  免费   1112篇
  国内免费   398篇
耳鼻咽喉   36篇
儿科学   163篇
妇产科学   170篇
基础医学   808篇
口腔科学   323篇
临床医学   1580篇
内科学   864篇
皮肤病学   204篇
神经病学   525篇
特种医学   237篇
外科学   805篇
综合类   2356篇
一般理论   5篇
预防医学   3444篇
眼科学   331篇
药学   1321篇
  35篇
中国医学   1067篇
肿瘤学   365篇
  2024年   22篇
  2023年   180篇
  2022年   231篇
  2021年   426篇
  2020年   464篇
  2019年   439篇
  2018年   383篇
  2017年   463篇
  2016年   519篇
  2015年   468篇
  2014年   738篇
  2013年   1000篇
  2012年   770篇
  2011年   798篇
  2010年   606篇
  2009年   564篇
  2008年   653篇
  2007年   708篇
  2006年   610篇
  2005年   491篇
  2004年   444篇
  2003年   394篇
  2002年   342篇
  2001年   303篇
  2000年   254篇
  1999年   238篇
  1998年   197篇
  1997年   171篇
  1996年   139篇
  1995年   142篇
  1994年   139篇
  1993年   102篇
  1992年   117篇
  1991年   125篇
  1990年   102篇
  1989年   107篇
  1988年   85篇
  1987年   77篇
  1986年   104篇
  1985年   62篇
  1984年   70篇
  1983年   65篇
  1982年   71篇
  1981年   56篇
  1980年   52篇
  1979年   51篇
  1978年   26篇
  1977年   15篇
  1976年   22篇
  1975年   14篇
排序方式: 共有10000条查询结果,搜索用时 296 毫秒
71.
益气养阴清热法合化疗治疗急性髓细胞白血病   总被引:3,自引:0,他引:3  
目的 :探讨益气养阴清热法为基本治法配合化疗治疗急性髓细胞白血病的临床疗效。方法 :用黄芪、太子参、白术、生地、黄精、天门冬、麦门冬、白花蛇舌草、半枝莲、小蓟、蒲公英、甘草组方。配合 DA、HA、IA等联合化疗方案。部分 M3 患者应用维甲酸、亚砷酸治疗。部分患者静脉滴注榄香稀乳、参脉、丹参等辅助治疗。结果 :1 5 6例完全缓解 1 1 3例 ,完全缓解率 72 .4% ;部分缓解 2 0例 ,部分缓解率 1 2 .8% ;总缓解率 85 .3% ;3年生存率 37.2 % ,5年生存率 2 2 .1 %。 32例老年患者完全缓解率 43.8% ,明显低于其他年龄段 ( P<0 .0 1 )。应用维甲酸治疗的 1 8例 M3 完全缓解 1 5例 ,完全缓解率 83.3%。亚砷酸治疗 3例完全缓解 2例。结论 :益气养阴清热法作为中医的基本治法治疗急性髓细胞白血病符合临床实际。中西医结合治疗急性髓细胞白血病缓解率高 ,患者易于接受 ,有比较高的实用价值。其中提示老年患者治疗比较困难。  相似文献   
72.
目的 :观察联合运用功能矫治器和方丝弓矫治器治疗安氏 类错牙合患者的临床效果。方法 :以近 5年来收治的 30例安氏 类错牙合临床患者 ,平均治疗时间 1 8个月 ,治疗前后均拍摄头影测量片 ,将测量结果进行分析比较 ,评价治疗效果。结果 :儿童的上颌磨牙远中移动 ,下颌磨牙近中移动明显 ,儿童颌骨前后垂直关系显著增加。结论 :联合功能矫治器及方丝弓矫治器治疗的安氏 类错牙合有满意的疗效 ,可以相互促进改善患者的软硬组织关系  相似文献   
73.
如何上好医学生药品质量选修课   总被引:1,自引:1,他引:0  
医学生在以后的工作中会经常接触到药品,而药品质量的好坏直接关系到患者的生命安全,因此在医学生中开设药品质量选修课非常必要。本文从教学方法、教学手段、教学内容的衔接等方面提出了一些观点和具体方法。  相似文献   
74.
Cohort and case-control studies are two standard approaches for investigating the etiology of occupational diseases. This paper, which is the first of a four-part series, contains a review of the design features of occupational cohort studies. Topics discussed include the basic features of prospective and historical cohort studies, options for defining the cohort, disease incidence ascertainment, and considerations involved in planning an occupational cohort study. Subsequent papers in this series will focus on data analysis of occupational cohort studies and the design and analysis of occupational case-control studies.  相似文献   
75.
浅议病理生理学教学改革   总被引:3,自引:1,他引:2  
本文从病理生理学理论和实验教学两个方面论述了病理生理学方法的改革与实践。教学模式变学生被动为自主学习,在传授知识同时注重培养学生自学创新能力。  相似文献   
76.
77.
Two identical groups of first-year dental students were instructed in the pathology of dental caries and periodontitis using computer-assisted learning (CAL) or tutorial teaching (TT). A cross-over arrangement, in which the first group was taught about dental caries by CAL and periodontitis by TT and the second group in the reverse order, allowed comparison of the two methods. The comparison included a knowledge test and completion of a questionnaire. CAL and TT were equally effective as far as acquisition of knowledge was concerned. Students felt pressurized with CAL and had problems with note-taking. They liked a teacher to be present. Nevertheless, CAL was an acceptable method of instruction and was more economical, in terms of staff involvement, than TT.  相似文献   
78.
One of the advantages of polyurethane foam-covered prostheses has been that in the first 5 to 10 years after their use, the amount of capsular contraction was found much less than when similar ``slick' prostheses were used. Another advance was their fixation to the surrounding tissue thus giving a more natural appearance and movement with the muscles when the arms were moved in any direction. The formation of a thick capsule also acted as a protection against gel granuloma due to rupture of the prosthesis and has been thought to be a factor in the lower capsule contraction rate. The greatest disadvantage has been that its removal was extremely difficult and this has continued up until the technique described in this paper has been introduced.  相似文献   
79.
The purpose of this study was to assess the impact of an educational intervention on medical students' attitudes toward social and sexual contact with patients by doctors from three medical specialties (general practice, obstetrics/gynaecology and psychiatry). Medical students from two consecutive fifth year classes at one medical school participated in one 3 hour session that included instruction on the standards of the profession that prohibit doctor–patient sexual contact. Students were assigned to either intervention groups or control groups and responded to an anonymous questionnaire (overall response rate 66·8% ; n=141). As many as 14·5% of control group students thought it was (sometimes or usually) appropriate for general practitioners to date their own patients and at least 3% thought it appropriate for members of any of these three medical specialties to engage in sexual contact with their own patients. However, there were no significant differences in attitudes toward hugging, dating or sexual contact with current patients between those who had attended the seminar and the control groups. The session significantly influenced attitudes regarding obstetrician/gynaecologists and psychiatrists hugging and having sexual contact with former patients. These findings are discussed in relation to a need for expansion of such instruction.  相似文献   
80.
As a part of any curriculum reorganization, new instructional methods are also tested. When the University of Turku sociology of medicine course was found to need renovation, its goals and objectives, content and instructional methods were closely examined and modified, in order to strengthen institutional and multiprofessional relations and reinforce sociocultural issues in doctors' competence with the patient. This paper discusses this change, emphasizing teaching and learning methodology.  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