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   76403篇
  免费   5643篇
  国内免费   996篇
耳鼻咽喉   334篇
儿科学   848篇
妇产科学   849篇
基础医学   3426篇
口腔科学   1721篇
临床医学   15206篇
内科学   4705篇
皮肤病学   681篇
神经病学   1266篇
特种医学   1237篇
外科学   3917篇
综合类   17477篇
现状与发展   2篇
一般理论   52篇
预防医学   22577篇
眼科学   378篇
药学   4037篇
  684篇
中国医学   2745篇
肿瘤学   900篇
  2024年   242篇
  2023年   1372篇
  2022年   2395篇
  2021年   3207篇
  2020年   3490篇
  2019年   2580篇
  2018年   2478篇
  2017年   2430篇
  2016年   2383篇
  2015年   2211篇
  2014年   5689篇
  2013年   6334篇
  2012年   5451篇
  2011年   5773篇
  2010年   4676篇
  2009年   4153篇
  2008年   4370篇
  2007年   4415篇
  2006年   3828篇
  2005年   2849篇
  2004年   2267篇
  2003年   1800篇
  2002年   1326篇
  2001年   1128篇
  2000年   952篇
  1999年   744篇
  1998年   634篇
  1997年   537篇
  1996年   432篇
  1995年   386篇
  1994年   285篇
  1993年   201篇
  1992年   191篇
  1991年   223篇
  1990年   191篇
  1989年   152篇
  1988年   146篇
  1987年   113篇
  1986年   126篇
  1985年   132篇
  1984年   109篇
  1983年   93篇
  1982年   92篇
  1981年   80篇
  1980年   83篇
  1979年   45篇
  1978年   59篇
  1977年   62篇
  1976年   60篇
  1975年   37篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
A national study was conducted between 1991 and 1994 to explore and describe the changing role of the nurse teacher following the introduction of Project 2000 pre-registration nursing courses. Multiple methods were used to collect data from a wide variety of respondents (nurse teachers, midwife teachers, clinical nurses, health service managers and higher education lecturers). This paper presents the findings relating to the impact of Project 2000 and the move into higher education on the continuing educational needs of nurse teachers. Views on college strategies for staff development, the changing nature of teachers'academic and professional development needs and the problems of the conflicting demands experienced are reported. The research highlights the need for clinical credibility to be clearly defined in relation to nurse teachers and for educational institutions to place more emphasis on teachers'clinical development if the rhetoric of policy is to become a reality.  相似文献   
92.
An investigation was undertaken to determine the factors influencing performance of medical students at the Faculty of Medicine, University of Kuwait. Data were collected for the first batch of 42 candidates who successfully passed the 7-year medical programme. Results showed high correlations between high-school admission grades and subsequent performance during the medical programme. Similar results were also obtained with English proficiency. A partial correlation controlling for English proficiency, however, showed a systematic decline in the magnitude of the correlations between high-school grades and performance during the medical programme. In fact the relationship between high-school GPA and clinical GPA was non-significant. A prominent influence of English proficiency on performance is indicated.  相似文献   
93.
岛津数字胃肠机IF OVER故障产生的原理及维修   总被引:1,自引:0,他引:1  
雷烈 《医疗设备信息》2007,22(6):113-113
分析了岛津3200数字胃肠机IFOVER故障产生的原因,并结合实际故障现象,具体介绍了排除方法。  相似文献   
94.
Vocational training is a key element of professional development in general practice. Learner-centred approaches to teaching bring a need for greater understanding of the individual learning styles and preferences of trainees. This paper reports the findings of a pilot study undertaken to determine factors that may influence learning among general practice trainees. A questionnaire survey of 261 trainees in six regions in the UK was carried out to explore attitudes to a series of themes identified in semi-structured interviews with trainees at the end of their training. Six distinct subscales were identified using principal components analysis. These are named 'Learning from Patients', 'Openness to Criticism', 'Negative Attitudes', 'Desire for Clear Guidelines', 'Peer Support', and 'Academic Approach'. Males scored significantly higher on 'Academic Approach' (   P < 0.05  ). Each of the subscales reflects themes that permeate the atmosphere of general pratice training. Further work is required to establish relationships between the subscales and the outcomes of learning and to explore the implications for continuing professional development. The questionnaire is an instrument that may prove useful in the future investigation of learning in general practice.  相似文献   
95.
96.
目的 了解高师学生心理健康现状和父母文化程度对高师学生心理健康水平的影响。方法 对河南省部分高师学生进行问卷调查。结果 河南省大部分高师学生心理健康状况是好的和比较好的;15.13%的高师学生心理健康状况不良,教师、咨询人员和家长应高度重视,密切配合,正确地对他们进行引导和教育。结论 父母文化程度不同对高师学生心理健康水平的影响有差异。但差异不显著。  相似文献   
97.
An automated multiphasic-health-test system has been opened in Japan for the early detection and treatment of disease in adults. The centre utilises system simulation, digital computation and automated medical equipment, and has made it possible to handle many examinees daily, and to retrieve their data easily. This paper reports many new data and their analysis.  相似文献   
98.
Medical students on the radiology elective in our institution create electronic presentations to present to each other as part of the requirements for the rotation. Access was given to previous students presentations via the web-based system, Medical Imaging Resource Center (MIRC) project, created and supported by the Radiological Society of North America (RSNA). RadPix Power 2 MIRC (Weadock Software, LLC, Ann Arbor, MI) software converted the Microsoft PowerPoint (Redmond, WA) presentations to a MIRC-compatible format. The textual information on each slide is searchable across the entire MIRC database. Future students will be able to benefit from the work of their predecessors.  相似文献   
99.
子宫切除术对性生活质量的影响及其干预   总被引:5,自引:2,他引:5  
目的 :了解子宫切除时宫颈去留对术后性生活质量的影响 ,并观察健康教育干预对提高患者术后性生活质量的作用。方法 :将因子宫良性病变而行子宫切除的病人分为全切组和次切组 ,每组再随机分为干预组和非干预组 ,分别进行术后性生活质量评分比较。结果 :1 在未经心理干预的子宫切除病人中次切组性生活质量评分高于全切组 (P <0 0 5 ) ;2 干预组术后性生活质量评分高于非干预组 (P <0 0 5 )。结论 :子宫切除时保留宫颈及手术前后的健康教育干预有利于患者术后性生活质量的改善  相似文献   
100.
Out-of-hours organisations are responsible for the care of patients 70% of the time, and their GPs act as gatekeepers to secondary care services. This observational study identifies the variations in GPs' out-of-hours referral rates to secondary care and factors that could explain these variations. One hundred and forty-nine GPs who worked in one UK general practice out-of-hours cooperative which served 19 practices with 167 000 registered patients. Data on patients who accessed the out-of-hours service over 3 years (2001-2004) were examined. Factors thought to be predictors of variation in referral rates were investigated using logistic regression analysis. There was a fivefold difference in referral rates between the lowest and highest referring quartiles of GPs (OR [odds ratio] = 4.56, CI [confidence interval] = 3.86 to 5.38). The sex (female) of the clinician, the time of the consultation (11 pm to 7 am), and the place of the consultation (home visit) accounted for some, but not all, of the increased referral rates. A doctor working out-of-hours disproportionately influences the fate of the patient, the number of hospital admissions, and extra costs to the health service. There is a need for follow-up studies to investigate the factors associated with referral behaviour, and how the variation relates to patient factors and the resources available. These findings could be used when planning the staffing of out-of-hours services to optimise appropriate care and minimise patients' exposure to unnecessary intrusive and expensive hospital care.  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