全文获取类型
收费全文 | 59315篇 |
免费 | 4643篇 |
国内免费 | 1367篇 |
专业分类
耳鼻咽喉 | 199篇 |
儿科学 | 421篇 |
妇产科学 | 451篇 |
基础医学 | 2543篇 |
口腔科学 | 690篇 |
临床医学 | 7092篇 |
内科学 | 3021篇 |
皮肤病学 | 351篇 |
神经病学 | 718篇 |
特种医学 | 1053篇 |
外国民族医学 | 1篇 |
外科学 | 2454篇 |
综合类 | 19780篇 |
现状与发展 | 2篇 |
一般理论 | 43篇 |
预防医学 | 17140篇 |
眼科学 | 373篇 |
药学 | 3638篇 |
837篇 | |
中国医学 | 3922篇 |
肿瘤学 | 596篇 |
出版年
2024年 | 227篇 |
2023年 | 952篇 |
2022年 | 1946篇 |
2021年 | 2500篇 |
2020年 | 2865篇 |
2019年 | 1641篇 |
2018年 | 1490篇 |
2017年 | 1570篇 |
2016年 | 1577篇 |
2015年 | 1601篇 |
2014年 | 4477篇 |
2013年 | 4337篇 |
2012年 | 4454篇 |
2011年 | 4925篇 |
2010年 | 4157篇 |
2009年 | 3444篇 |
2008年 | 3856篇 |
2007年 | 3633篇 |
2006年 | 3165篇 |
2005年 | 2444篇 |
2004年 | 1798篇 |
2003年 | 1390篇 |
2002年 | 1019篇 |
2001年 | 849篇 |
2000年 | 724篇 |
1999年 | 517篇 |
1998年 | 454篇 |
1997年 | 435篇 |
1996年 | 367篇 |
1995年 | 321篇 |
1994年 | 251篇 |
1993年 | 167篇 |
1992年 | 145篇 |
1991年 | 187篇 |
1990年 | 157篇 |
1989年 | 140篇 |
1988年 | 127篇 |
1987年 | 95篇 |
1986年 | 122篇 |
1985年 | 104篇 |
1984年 | 103篇 |
1983年 | 84篇 |
1982年 | 87篇 |
1981年 | 70篇 |
1980年 | 71篇 |
1979年 | 34篇 |
1978年 | 60篇 |
1977年 | 59篇 |
1976年 | 61篇 |
1975年 | 37篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
文章针对目前医学生“网络成瘾症”的现状进行了分析,并指出了产生的原因和解决问题的办法,以求达到标本兼治。最后提出三点预防医学生“网络成瘾症”的对策:一是高校及其附属医院要为医学生营造宽松愉快的学习、生活环境;二是呼吁家长关注医学生身心发展的特殊规律,建立良好的家庭环境;三是建立和完善与网络社会相应的法律法规,规范医学生的网上行为。 相似文献
32.
P. Croft D. A. White C. M. D. Wiskin T. F. Allan 《European journal of dental education》2005,9(1):2-9
This paper reports student (n = 180) feedback on the role-play teaching methodology used in behavioural sciences teaching at The School of Dentistry in Birmingham (UK). The feedback received on this well-established (since 1995) educational programme was collected via questionnaire (100% response rate), requiring Likert scale and free text responses. Generally students reported that they had enjoyed and valued the session. Over two-thirds (69.7%) of students rated the role-players as 'very real' and over three-quarters (78.9%) rated their feedback as 'very fair'. The data collected from this study will inform future curriculum development. Student feedback was very positive and demonstrated that the cohort (86% of all students studying in years 1, 2 and 3) found the use of professional role-players involved in behavioural sciences teaching to be both acceptable and valuable. 相似文献
33.
34.
谈耳鼻喉科教学中多媒体技术的应用 总被引:3,自引:0,他引:3
多媒体教学技术应用于耳鼻喉科教学,具有直观性好、动态感强、信息量大等优点,能使教学信息直接、形象、具体、生动地展现给学生,让学生体会到学习的乐趣,是耳鼻喉科现代化教学的理想模式. 相似文献
35.
Objectives: To validate the accuracy of using probabilistic linkage for matching de‐identified ambulance records to a state trauma registry. Methods: This was a retrospective cohort analysis. Three thousand nine hundred nineteen true matches between ambulance and state trauma registry data from 1998 to 2003 were identified by deterministic matching on trauma identification number and verified by human review. Two thousand thirty‐eight ambulance records from trauma patients not meeting criteria for a true match, and an identical number of trauma registry records randomly selected from the one local county served by a different EMS provider, were included as nonmatches. There were 17 variables considered for linkage, which included the following: age, gender, race, county, hospital, date, rural setting, call and arrival times, mechanism, penetrating injury, vital signs, intubation, and intoxication. Probabilistic linkage was used to link the two data sets, using seven different combinations of common variables (maximum, 17; minimum, 4). The sensitivity and specificity of identifying true matches and nonmatches (95% confidence intervals [95% CI]) were calculated for each combination of variables. Results: Using all 17 available variables, 3,766 of 3,919 true matches were appropriately linked (sensitivity, 96.1%; 95% CI = 95.4% to 96.7%), with eight mismatches (specificity, 99.6%; 95% CI = 99.2% to 99.8%). Sensitivity fell below 95% with < 15 variables; however, sensitivity was very dependent on the inclusion of variables with high discriminatory power. Specificity remained >98% regardless of the number of variables included. Conclusions: Probabilistic linkage is a valid method for matching ambulance records to a trauma registry without the use of patient identifiers; however, the sensitivity of identifying true matches is critically dependent on the number and type of common variables included in the analysis. 相似文献
36.
37.
作者结合实际工作经验简要论述了英文医学科技论文写作中词的选择与搭配的问题,并就如何提高英文写作水平提出了几点建议。 相似文献
38.
Among British-qualified doctors of 1974 and 1977, about 80% held postgraduate qualifications of some kind. The commonest qualifications were DRCOG, MRCP and MRCOG. There were considerable differences between medical schools in the numbers of qualifiers taking various examinations. Apart from the MRC Psych, DRCOG and Family Planning Certificate, qualifications were more commonly held by men than women. Tables show the type of work being done 9-13 years after leaving medical school by holders of various postgraduate qualifications; e.g. 60% of MRCP holders were working in medicine or a medical specialty and 84% of FRCS holders in general surgery or a surgical specialty. Discussion deals with the plurality, specificity, variability, perceived necessity, sufficiency, international utility and career significance of British postgraduate qualifications. 相似文献
39.
介绍了一种简单有效的维纳滤波器设计过程,并采用该过程对数字化X射线影像进行滤波,试验表明:维纳滤波器能在去除图像噪声的同时较好地保留图像细节,具有实际应用价值。 相似文献
40.
图表比较教学法在微生物学教学中的应用 总被引:1,自引:0,他引:1
图表比较教学法作为微生物学教学的直观教学手段在本科教学中占有十分重要的地位,是形象思维和抽象思维两种思维方式的协调统一。有利于反映各知识层面的内在联系,可使学生加深对知识的理解,增强分析和综合问题的能力,以利于提高教学质量。 相似文献