全文获取类型
收费全文 | 251338篇 |
免费 | 61429篇 |
国内免费 | 12417篇 |
专业分类
耳鼻咽喉 | 2783篇 |
儿科学 | 6720篇 |
妇产科学 | 2609篇 |
基础医学 | 32984篇 |
口腔科学 | 8353篇 |
临床医学 | 36792篇 |
内科学 | 45255篇 |
皮肤病学 | 9419篇 |
神经病学 | 19952篇 |
特种医学 | 8287篇 |
外国民族医学 | 67篇 |
外科学 | 28509篇 |
综合类 | 37428篇 |
现状与发展 | 55篇 |
一般理论 | 34篇 |
预防医学 | 19472篇 |
眼科学 | 6023篇 |
药学 | 25923篇 |
267篇 | |
中国医学 | 14488篇 |
肿瘤学 | 19764篇 |
出版年
2024年 | 562篇 |
2023年 | 2607篇 |
2022年 | 6353篇 |
2021年 | 9959篇 |
2020年 | 11961篇 |
2019年 | 15898篇 |
2018年 | 15441篇 |
2017年 | 17190篇 |
2016年 | 16942篇 |
2015年 | 20067篇 |
2014年 | 21818篇 |
2013年 | 22258篇 |
2012年 | 19571篇 |
2011年 | 20405篇 |
2010年 | 20740篇 |
2009年 | 15122篇 |
2008年 | 13438篇 |
2007年 | 11926篇 |
2006年 | 10732篇 |
2005年 | 9652篇 |
2004年 | 6722篇 |
2003年 | 6408篇 |
2002年 | 5388篇 |
2001年 | 4513篇 |
2000年 | 4088篇 |
1999年 | 3177篇 |
1998年 | 1703篇 |
1997年 | 1798篇 |
1996年 | 1337篇 |
1995年 | 1184篇 |
1994年 | 1112篇 |
1993年 | 685篇 |
1992年 | 691篇 |
1991年 | 661篇 |
1990年 | 582篇 |
1989年 | 493篇 |
1988年 | 444篇 |
1987年 | 394篇 |
1986年 | 307篇 |
1985年 | 239篇 |
1984年 | 150篇 |
1983年 | 122篇 |
1982年 | 50篇 |
1981年 | 56篇 |
1980年 | 38篇 |
1979年 | 48篇 |
1978年 | 29篇 |
1977年 | 21篇 |
1976年 | 20篇 |
1973年 | 16篇 |
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
71.
72.
Peng‐fei Lei Shi‐long Su Ling‐yu Kong Cheng‐gong Wang Da Zhong Yi‐he Hu 《Orthopaedic Surgery》2019,11(5):914-920
Three‐dimensional (3D) printing technology, virtual reality, and augmented reality technology have been used to help surgeons to complete complex total hip arthroplasty, while their respective shortcomings limit their further application. With the development of technology, mixed reality (MR) technology has been applied to improve the success rate of complicated hip arthroplasty because of its unique advantages. We presented a case of a 59‐year‐old man with an intertrochanteric fracture in the left femur, who had received a prior left hip fusion. After admission to our hospital, a left total hip arthroplasty was performed on the patient using a combination of MR technology and 3D printing technology. Before surgery, 3D reconstruction of a certain bony landmark exposed in the surgical area was first performed. Then a veneer part was designed according to the bony landmark and connected to a reference registration landmark outside the body through a connecting rod. After that, the series of parts were made into a holistic reference registration instrument using 3D printing technology, and the patient's data for bone and surrounding tissue, along with digital 3D information of the reference registration instrument, were imported into the head‐mounted display (HMD). During the operation, the disinfected reference registration instrument was installed on the selected bony landmark, and then the automatic real‐time registration was realized by HMD through recognizing the registration landmark on the reference registration instrument, whereby the patient's virtual bone and other anatomical structures were quickly and accurately superimposed on the real body of the patient. To the best of our knowledge, this is the first report to use MR combined with 3D printing technology in total hip arthroplasty. 相似文献
73.
74.
目的研究和开发支持中医和现代生物医学本体和术语集的语义标注系统。方法以MedPortal本体库和中医临床术语集等为术语资源库,设计语义标注系统工作流程和功能框架,并开发Web应用系统。结果构建了一个基于Web的中医药文献语义标注系统,支持语料库管理与维护、术语词典管理、语义标注和语义检索等功能,既可以为基于机器学习的信息抽取算法研究提供训练集,又能实现语义层面的多来源数据集成与知识融合。结论该中医药文献语义标注系统设计方案已经过实际项目验证,可为其他同类系统研发提供参考。 相似文献
75.
首都医科大学通过60年辛勤耕耘、精益求精,秉承“顶天立地”的人才培养理念,为社会培养了大批高水平的学术型与应用型医药卫生人才。回顾学校60年来本专科教育、全科医学教育、国际教育、研究生教育的人才培养成果,以总结经验并鼓舞全体首医人进一步求真务实、凝心聚力、积极进取、追求卓越,努力将学校建设成为国际一流的研究型医科大学。 相似文献
76.
77.
Primary cutaneous anaplastic large cell lymphomas with 6p25.3 rearrangement exhibit particular histological features 下载免费PDF全文
78.
L.‐Q. Zheng X.‐C. Han Y. Huang H.‐W. Li X.‐D. Niu J. Li 《Clinical and experimental dermatology》2015,40(3):293-297
Porocarcinoma is an unusual, locally aggressive and potentially fatal neoplasm. Several cutaneous malignancies have been described in association with porocarcinoma, including squamous cell carcinoma, basal cell carcinoma and tricholemmal carcinoma. Previous reports have indicated that the occurrence of malignant tumours in combination with porocarcinoma is extremely rare, in particular with regard to Bowen disease (BD). We report an uncommon case of porocarcinoma occurring synchronously in a single BD lesion in a 63‐year‐old woman with multiple BD lesions. The clinical and histological findings confirmed this diagnosis. 相似文献
79.
Rebecca L. King Albert C. Yan Debora R. Sekiguchi John K. Choi 《Journal of cutaneous pathology》2015,42(12):1012-1017
Reactive lymphoid infiltrates of the skin composed predominantly of gamma‐delta (γδ) T cells are not well described in the literature. Herein we report a case of an otherwise healthy 4‐year‐old male who presented with a waxing and waning papular rash characterized by small, discrete crusted papules spread across his trunk, face and extremities. Clinical evaluation revealed no evidence of systemic disease. Microscopic examination revealed a dermal, perivascular infiltrate of highly atypical lymphocytes with a γδ T cell phenotype, worrisome for primary cutaneous γδ T cell lymphoma. The clinical course, however, was that of a reactive condition and prompted consideration of a diagnosis of pityriasis lichenoides et varioliformis acuta (PLEVA) and lymphomatoid papulosis (LyP). In many ways, this case defies current classification schemes and seems to expand the spectrum of reactive γδ T cell infiltrates of the skin. 相似文献
80.