全文获取类型
收费全文 | 109446篇 |
免费 | 9900篇 |
国内免费 | 3139篇 |
专业分类
耳鼻咽喉 | 577篇 |
儿科学 | 1324篇 |
妇产科学 | 1006篇 |
基础医学 | 4267篇 |
口腔科学 | 1409篇 |
临床医学 | 12393篇 |
内科学 | 8162篇 |
皮肤病学 | 1149篇 |
神经病学 | 3296篇 |
特种医学 | 2111篇 |
外国民族医学 | 3篇 |
外科学 | 5869篇 |
综合类 | 26141篇 |
现状与发展 | 9篇 |
一般理论 | 25篇 |
预防医学 | 9262篇 |
眼科学 | 588篇 |
药学 | 15037篇 |
399篇 | |
中国医学 | 26072篇 |
肿瘤学 | 3386篇 |
出版年
2024年 | 681篇 |
2023年 | 2319篇 |
2022年 | 4309篇 |
2021年 | 5627篇 |
2020年 | 5655篇 |
2019年 | 4053篇 |
2018年 | 3622篇 |
2017年 | 4550篇 |
2016年 | 4806篇 |
2015年 | 4552篇 |
2014年 | 11496篇 |
2013年 | 9704篇 |
2012年 | 9693篇 |
2011年 | 9447篇 |
2010年 | 7352篇 |
2009年 | 5392篇 |
2008年 | 4616篇 |
2007年 | 4579篇 |
2006年 | 3615篇 |
2005年 | 2827篇 |
2004年 | 2189篇 |
2003年 | 1803篇 |
2002年 | 1376篇 |
2001年 | 1234篇 |
2000年 | 1048篇 |
1999年 | 799篇 |
1998年 | 598篇 |
1997年 | 504篇 |
1996年 | 372篇 |
1995年 | 344篇 |
1994年 | 316篇 |
1993年 | 229篇 |
1992年 | 183篇 |
1991年 | 178篇 |
1990年 | 134篇 |
1989年 | 128篇 |
1988年 | 102篇 |
1987年 | 107篇 |
1986年 | 95篇 |
1985年 | 190篇 |
1984年 | 261篇 |
1983年 | 210篇 |
1982年 | 226篇 |
1981年 | 204篇 |
1980年 | 174篇 |
1979年 | 157篇 |
1978年 | 108篇 |
1977年 | 74篇 |
1976年 | 79篇 |
1975年 | 72篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
41.
D M McSherry 《Statistics in medicine》1986,5(5):497-502
The independence Bayesian model has been used widely in computer programs designed to support clinical decision-making. A reasoning strategy has been developed to enable these programs to conduct clinically pertinent dialogue and explain their reasoning. It has been implemented in a program for the diagnosis of acute abdominal pain based on the Bayesian model of de Dombal et al. Several features of the dialogue design have been adopted from artificial intelligence research, including shared initiative and critiquing. The program adopts a flexible goal-driven strategy, attempting to confirm the clinician's diagnosis or rule out the likeliest alternative. Symptoms and signs are selected in order of their expected weights of evidence in favour of the hypothesized disease. 相似文献
42.
对我科1989-1990年中收治的婴儿肝炎综合征63例的临床表现、合并症、治疗等方面进行了分析。笔者认为婴儿肝炎综合征为一组临床症候群。病因诊断有其重要性。腹部B超检查有助于肝炎和胆道闭锁的鉴别,可作为常规检查方法。并认为用肾上腺皮质激素治疗有效。 相似文献
43.
本文详细介绍了古代日耳曼和阿拉伯律法中与法医学有关的内容及其对法医学发生发展的影响。认为以赎罪金代替原始的血亲复仇法是日耳曼法的一个进步;两法对非致命损伤的赔偿规定都取得了令人瞩目的成就。本文还就大致同时代的唐律对杀人及伤害案件的有关规定,比较了东西方法规的异同,探讨了差别的原因。 相似文献
44.
45.
Max Schaldach 《Artificial organs》1990,14(1):28-40
With the invention of the laser, many clinical disciplines have taken advantage of this new energy source. Its precision, intensity and energy density is superior to all other known surgical devices. Based on the principle of light amplification from a photon-emitting resonator, the monochromaticity, collimation and coherence provide the high-energy density of the laser beam for medical applications. The state-of-the-art and future potential of laser use in cardiovascular diseases will be reviewed. Most of the work in this field has been accomplished during the past decade with numerous research projects. Although many technical advances have been made, so far the results in cardiovascular medicine are in the areas of vessel anastomosis, ablation of conduction passes for arrhythmia therapy, and angioplasty. In this paper, special attention will be given to the recent success in XeCl excimer laser application for photodecomposition of tissue with a goal of improved recanalization. The high-power density of the XeCl excimer laser provides significant advantages for the disruption of both embolic and calcified plaque. Regardless of the type of tissue ablated, gross, histologic, and ultra-structural analysis confirmed the absence of thermal injury in luminar recanalization as well as in animal studies. Progress in the manufacture of catheters, with multiple very small diameter fibers, led to the decisive breakthrough in clinical laser angioplasty. Peripheral as well as coronary arteries have been successfully recanalized followed by balloon dilatation. The ease of application and the success achieved thus far have resulted in an optimistic assessment for laser medicine. 相似文献
46.
Summary UK health policy requires child and adolescent mental health service providers to demonstrate that their services are effective.
The FOCUS project has been developed to improve the availability and accessibility of research evidence and innovation, to
support purchasers in the effective commissioning of services and to help providers base service provision on evidence of
effectiveness and develop methods of evaluation. 相似文献
47.
48.
49.
原发性腹膜后脂肪肉瘤20例报告 总被引:1,自引:0,他引:1
自1965年5月至1991年7月共收治原发性腹膜后脂肪肉瘤20例,均经手术及病理证实。20例中完全切除者15例,部分切除者4例,活检1例。肿瘤切除合并肾,肠襻等邻近器官切除者达12例。全组的5年,10年生存率分别是57.1%和20.0%,完全切除组的5年10年生存率分别是63.6%和28.6%。20例病人共进行了48次切除手术。首次手术死亡2例。着重讨论了本病的诊断、治疗和突出的临床特点。 相似文献
50.