全文获取类型
收费全文 | 109960篇 |
免费 | 11181篇 |
国内免费 | 3889篇 |
专业分类
耳鼻咽喉 | 428篇 |
儿科学 | 622篇 |
妇产科学 | 863篇 |
基础医学 | 4292篇 |
口腔科学 | 1119篇 |
临床医学 | 9659篇 |
内科学 | 6302篇 |
皮肤病学 | 951篇 |
神经病学 | 1707篇 |
特种医学 | 1933篇 |
外国民族医学 | 296篇 |
外科学 | 4350篇 |
综合类 | 28256篇 |
现状与发展 | 14篇 |
一般理论 | 24篇 |
预防医学 | 8021篇 |
眼科学 | 585篇 |
药学 | 12182篇 |
315篇 | |
中国医学 | 40356篇 |
肿瘤学 | 2755篇 |
出版年
2024年 | 729篇 |
2023年 | 1903篇 |
2022年 | 3546篇 |
2021年 | 4681篇 |
2020年 | 4925篇 |
2019年 | 3058篇 |
2018年 | 2751篇 |
2017年 | 3896篇 |
2016年 | 4087篇 |
2015年 | 3684篇 |
2014年 | 12496篇 |
2013年 | 9752篇 |
2012年 | 10194篇 |
2011年 | 10114篇 |
2010年 | 9905篇 |
2009年 | 7795篇 |
2008年 | 5270篇 |
2007年 | 4692篇 |
2006年 | 3749篇 |
2005年 | 3111篇 |
2004年 | 2459篇 |
2003年 | 2174篇 |
2002年 | 1746篇 |
2001年 | 1556篇 |
2000年 | 1330篇 |
1999年 | 918篇 |
1998年 | 720篇 |
1997年 | 641篇 |
1996年 | 522篇 |
1995年 | 467篇 |
1994年 | 427篇 |
1993年 | 308篇 |
1992年 | 308篇 |
1991年 | 244篇 |
1990年 | 162篇 |
1989年 | 120篇 |
1988年 | 102篇 |
1987年 | 81篇 |
1986年 | 66篇 |
1985年 | 71篇 |
1984年 | 58篇 |
1983年 | 29篇 |
1982年 | 35篇 |
1981年 | 34篇 |
1980年 | 35篇 |
1979年 | 18篇 |
1978年 | 8篇 |
1977年 | 13篇 |
1976年 | 8篇 |
1975年 | 7篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
目的:运用中医传承辅助平台系统(V2.5)深入分析王树声教授治疗上尿路结石的用药经验,挖掘其核心经验 方组成和辨证用药规律。方法:收集王教授门诊治疗上尿路结石的治疗验方304 首,将方药信息录入系统,采用药物频次统计、 关联规则分析和熵聚类分析等方法分析处方用药规律。结果:304 首处方中涉及中药97 味,用药频次超过100 次的有14 味。所用药物药性多寒、温、平,药味多甘、苦,主归肝、肾、脾经;共得出25 组核心组合和9 首新处方。结论:王教授治疗 上尿路结石以益气固本、清热通淋为主,用药的关键在于“扶正固本”的把握和“祛邪通淋”的权衡,为临证用药和新方 开发提供参考。 相似文献
102.
目的:探讨骨伤科中成药的用药规律,为临床合理用药及新药开发提供参考。方法:以《中国药典》2015年版一部收载的骨伤科类中成药共149个为研究对象,运用频数分析的方法研究其主治病症、所用剂型、各类方剂高频药物、核心药物组成,分析骨伤科中成药用药规律。结果:常用骨伤科中成药中治疗骨关节痹症的最多,其次为跌打损伤和骨关节退行性疾病的中成药;剂型以胶囊剂、片剂、丸剂为主;以活血化瘀药、祛风湿药、补虚药为核心药物组合,各类方剂中三者比例偏重不同。结论:通过对研究结果进行分析,提出了新药研发的方向。 相似文献
103.
104.
105.
颈前入路相关结构三维可视化研究 总被引:1,自引:0,他引:1
目的:建立颈前入路相关结构的三维可视化模型。方法:选取首例中国数字化可视人体数据集中第3颈椎上缘至第7颈椎下缘的连续薄层断面图像。运用3D—DOCTOR软件,在计算机上分割重建该手术入路相关的解剖结构并立体显示。结果:成功重建并立体显示第3~7颈椎、椎间盘、脊髓、颈神经、椎动脉、颈长肌、喉(气管)、咽(食管)、颈总动脉(颈内、外动脉)、颈内静脉、迷走神经和胸锁乳突肌等解剖结构的位置关系,建立了颈前入路相关结构的三维可视化模型。结论:在颈部三维可视化模型基础上,参照颈前入路手术步骤可逐层显示该手术相关的重要结构.为该手术的术前训练和模拟提供形态学依据。 相似文献
106.
The Australian higher education system is in a state of great change. The Federal education minister, Dr Brendan Nelson, has indicated that he intends to continue introducing far-reaching reforms that will impact significantly on how universities conduct teaching and research. The future allocation of government funding for university programs, including those in medical radiation, will have a significant effect on how those programs are delivered and could even determine whether programs remain viable. There will be a financial imperative for academic departments to strengthen research activity and to obtain funding from non-government sources, such as full-fee paying students, in order to generate enough income to cover program delivery. Medical radiation education in Australia is also facing many other challenges. Some of these are longstanding, such as the high cost of medical radiation program delivery, poor levels of research activity and difficulty in recruiting and retaining academic staff. Other problems have arisen recently, such as increased competition for students and a critical shortage of available training placements in clinical practice. The aim of this paper is to raise and explore these issues from a university perspective. 相似文献
107.
将临床细菌培养及其药物敏感试验结果定期进行统计、分析、反馈,既是医院分级管理和医院感染管理规范的有关内容和要求,更为临床诊断、治疗提供可靠的科学依据。 相似文献
108.
A survey of plants used as wild vegetables was conducted in four districts of Botswana in August and September 2005. The objective was to determine which wild plants were used as vegetables in the study area, and to document their cooking and preservation methods. Fourteen species representing seven families were mentioned as wild vegetables. In addition, six species from four families had other uses in traditional medicine. The implications of the documented processing methods on the retention of nutrients in the vegetables are discussed. 相似文献
109.
Clinical decisions are often made with incomplete information, yet patient care decisions are made every day. Patients vary clinically, uncertainty exists in diagnostic and prognostic information, and many preventive and treatment alternatives have not been formally assessed for their effectiveness. Because scientific information will never answer all clinical questions, clinical decisions are partially based on probabilistic information.
This paper describes how to apply clinical decision making to diagnosing and managing dental caries and periodontal diseases. By using explicit information to quantify probabilities and outcomes, clinical decision making analyzes decisions made under uncertain conditions and the uncertain impact of clinical information.
Clinical decision making incorporates concepts for preventing, diagnosing and treating dental caries and periodontal diseases: risk assessment, evidence-based dentistry, and multiple oral health outcomes. This information can serve as a tool for clinicians to augment clinical judgment and expertise. 相似文献
This paper describes how to apply clinical decision making to diagnosing and managing dental caries and periodontal diseases. By using explicit information to quantify probabilities and outcomes, clinical decision making analyzes decisions made under uncertain conditions and the uncertain impact of clinical information.
Clinical decision making incorporates concepts for preventing, diagnosing and treating dental caries and periodontal diseases: risk assessment, evidence-based dentistry, and multiple oral health outcomes. This information can serve as a tool for clinicians to augment clinical judgment and expertise. 相似文献
110.
目的通过改进直接体绘制技术(DVR)算法中的关键步骤,绘制能表达数据场中不同层次组织的内部结构。方法根据界面对光线的反射和物质本身对光线的衰减,将数据场划分为边界不丰富的简单数据场和边界丰富的复杂数据场,从而采用分段线性函数来构造阻光度传递函数(TF);将数据场中低灰度体素点看为一种不发光但会导致采样光线衰减的物质;根据采样结束时采样光线的阻光度分布来调整TF,完成三维绘制。结果绘制出了不同层次组织的内部结构。结论本算法有效地解决了体素点相互遮挡的问题,实现了医学三维整体可视化。 相似文献