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   11499篇
  免费   764篇
  国内免费   79篇
耳鼻咽喉   44篇
儿科学   288篇
妇产科学   314篇
基础医学   963篇
口腔科学   453篇
临床医学   2118篇
内科学   953篇
皮肤病学   78篇
神经病学   927篇
特种医学   347篇
外国民族医学   1篇
外科学   661篇
综合类   1123篇
现状与发展   2篇
一般理论   4篇
预防医学   2649篇
眼科学   23篇
药学   388篇
  7篇
中国医学   60篇
肿瘤学   939篇
  2024年   30篇
  2023年   247篇
  2022年   460篇
  2021年   586篇
  2020年   572篇
  2019年   590篇
  2018年   566篇
  2017年   424篇
  2016年   358篇
  2015年   373篇
  2014年   824篇
  2013年   978篇
  2012年   615篇
  2011年   657篇
  2010年   523篇
  2009年   562篇
  2008年   570篇
  2007年   544篇
  2006年   468篇
  2005年   289篇
  2004年   245篇
  2003年   237篇
  2002年   179篇
  2001年   166篇
  2000年   174篇
  1999年   130篇
  1998年   105篇
  1997年   88篇
  1996年   84篇
  1995年   70篇
  1994年   59篇
  1993年   67篇
  1992年   40篇
  1991年   61篇
  1990年   39篇
  1989年   16篇
  1988年   35篇
  1987年   24篇
  1986年   23篇
  1985年   55篇
  1984年   40篇
  1983年   25篇
  1982年   27篇
  1981年   18篇
  1980年   28篇
  1979年   28篇
  1978年   10篇
  1977年   11篇
  1976年   11篇
  1975年   5篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
探讨家庭心理教育对精神分裂症康复的影响,方法采用对照研究的方法,对病人家属进行家庭心理教育,应用BRPS和M-SDSS量表对病人进行评定。结果在两年间的历次评定中,研究组病人BPRS和M-SDSS量表评分明显低于对照组。结论家庭心理教育对促进精神分裂症病人康复具有积极意义。  相似文献   
92.
程鑫 《医学与社会》2000,13(6):9-10
发展全科医学的必要性已逐渐为社会所共识,从家庭的特性和时代的要求两个方面阐述了发展家庭医学的必然趋势。  相似文献   
93.
94.
In this study a staff planning model for a health service clinic has been developed and validated using an example case of a health service clinic. The primary purpose of this research is to develop a representative staff planning model which balances the cost and benefits of staff task flexibility through crosstraining for a healthcare facility. Additionally, legal requirements for task substitution in the healthcare industry have been considered in the model.  相似文献   
95.
The ongoing COVID-19 pandemic is raising great concern all over the world. The recent introduction of vaccines has offered reason for optimism, however, new issues have arisen, such as vaccine reluctance. The safety of vaccines for pregnant women is one of the most serious of these concerns. The purpose of this review article is to provide updated international vaccine recommendations, results of ongoing studies and clinical trials, and the role of gynecologists in counseling the women to understand the risks versus benefits as well as form an informed decision towards vaccine acceptance for COVID-19.Although COVID-19 infection increases the risk of severe morbidity and mortality in pregnant women, pregnant women were not included in the initial vaccine trials. As a result, safety information is scarce. Nations have differing recommendations, though many have recently approved the COVID-19 immunization in pregnancy following a risk-benefit analysis. The Joint Committee on Vaccination and Immunization (JCVI) of the United Kingdom recently approved an mRNA vaccination for pregnant women. Vaccination is recommended by the CDC, ACOG, ARFM, and WHO. India recently took a stand, with the ICMR and the Ministry of Health and Family Welfare recommending vaccination during pregnancy and lactation.  相似文献   
96.
OBJECTIVES: The new curriculum at King's College School of Medicine and Dentistry, which commenced in September 1996, requires all medical undergraduates to have a general practice placement throughout the 5 years of their medical education. DESIGN: This paper discusses recruitment, training and support of teaching practices for the new curriculum, reviews the distribution of single-handed general practices in the network and, via a selection of monitoring and evaluation procedures, discusses the implications of a policy which is inclusive of single-handed practices. The findings relate to the experience of the first semester of the first year of the new curriculum. It also examines the contributions that single-handed practices have made to the teaching network and the kind of support needed, if single-handed practices are to continue to contribute to the King's teaching network. SETTING: King's College School of Medicine and Dentistry. SUBJECTS: Medical undergraduates. RESULTS: The findings of this paper revealed that over a third of general practice provision is via single-handed practices in South-east London. Within the undergraduate teaching network, 10% of practices are single-handed. Students are welcomed and receive a learning experience comparable to those students in larger practices. Attendance at training events has proved difficult for some of these tutors, but the extra input from the department, in order to address this deficit, has not been onerous. Indeed, single-handed practices have not been unique with regard to difficulties in attendance at training events. CONCLUSIONS: The study concludes that single-handed practices can make satisfactory provision for undergraduates in the new curriculum and there is no evidence from this study to suggest otherwise.  相似文献   
97.
1991年我国8省已婚妇女婚姻状况分析   总被引:2,自引:0,他引:2  
利用1991年我国与美国北卡罗莱纳大学人口中心合作项目"中国经济、人口和营养健康状况调查"的调查资料,对中国辽宁、江苏、山东、河南、湖北、湖南、广西、贵州共8个省的4288名50岁以下的已婚妇女的婚姻状况进行了统计分析。结果表明:1991年8省城、乡妇女在婚比为87.71%,离婚和分居比为0.44%,丧偶比为10.30%。妇女已婚比20岁以下为0.90%,20~30岁为66.92%,30岁以上为97.77%。1991年8省妇女平均初婚年龄为23.70岁,普通生育率达1.903%,生育1胎的比例为46.92%,生育2胎或2胎以上者占32.63%和20.44%,男女性别比1.11:1。从计划生育指标来看,城、乡妇女晚婚率为46.66%,总节育率为63.41%,绝育率达24.97%,避孕率为31.89%。城、乡主要使用的节育措施为绝育术和避孕环,各占49.71%和44.49%,而使用避孕套节育的只占1.00%,药物避孕占3.36%。总的看来,8省妇女的婚姻较稳定,平均初婚年龄逐年推迟,普通生育率水平较低。计划生育工作成效显著,但某些地区仍存在早婚早育和多胎生育的现象。  相似文献   
98.
It has been suggested that a family history positive for coronaryheart disease (CHD) increases the risk of CHD. We studied thisassociation to determine the degree of risk, the independenceof this association and the presence of interaction of a familyhistory of CHD with the major known risk factors in a law incidencearea. One hundred and six hospital cases (85 males and 21 females)of CHD and 106 hospital controls individually matched with eachcase for sex, age and place of residence (rural–urban)were studied. From every participant, information was collectedon their personal and family history of cardiovascular diseaseand risk factors; height, weight, lipid profile and blood pressurewere measured, and an electrocardiogram was recorded. Conditionallogistic regression was used in the analysis. The observed odds ratio of patients suffering from CHD amongthose with, compared to those without, a positive family historyof CHD was 4.95 (95. confidence interval = 1.27–19.28)after adjusting for the major known risk factors in each individualand their families (no interaction term remained in the model). The results support the hypothesis that a family history ofCHD, acting through mechanisms other than known risk factorsor their familial aggregation, is an independent risk factorfor CHD even in a low incidence area. No interaction effectwas observed between family history and the presence of thethree major risk factors of CHD. This should help to identifyindividuals at greater risk of CHD.  相似文献   
99.
100.
Summary With 158 victims, the fire on board the Scandinavian Star was one of the world's worst ferry disasters. A team of identification experts, including dentists, were employed to secure evidence for identification and to remove the victims from the ferry. Four parallel teams, each with 2 dentists, examined and autopsied the victims at the Institute of Forensic Medicine, University of Oslo. Using the INTERPOL Disaster Victim Identification forms and aided by computers, all victims were identified within 17 days. Dental identity could be established in 107 cases (68%).  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