全文获取类型
| 收费全文 | 44624篇 |
| 免费 | 3407篇 |
| 国内免费 | 157篇 |
专业分类
| 耳鼻咽喉 | 666篇 |
| 儿科学 | 1193篇 |
| 妇产科学 | 784篇 |
| 基础医学 | 5871篇 |
| 口腔科学 | 576篇 |
| 临床医学 | 4594篇 |
| 内科学 | 9392篇 |
| 皮肤病学 | 490篇 |
| 神经病学 | 4325篇 |
| 特种医学 | 1658篇 |
| 外科学 | 7522篇 |
| 综合类 | 828篇 |
| 现状与发展 | 1篇 |
| 一般理论 | 40篇 |
| 预防医学 | 3466篇 |
| 眼科学 | 581篇 |
| 药学 | 3087篇 |
| 中国医学 | 57篇 |
| 肿瘤学 | 3057篇 |
出版年
| 2023年 | 239篇 |
| 2022年 | 206篇 |
| 2021年 | 1010篇 |
| 2020年 | 658篇 |
| 2019年 | 1073篇 |
| 2018年 | 1295篇 |
| 2017年 | 871篇 |
| 2016年 | 1022篇 |
| 2015年 | 1237篇 |
| 2014年 | 1632篇 |
| 2013年 | 2161篇 |
| 2012年 | 3599篇 |
| 2011年 | 3665篇 |
| 2010年 | 2036篇 |
| 2009年 | 1824篇 |
| 2008年 | 3050篇 |
| 2007年 | 3124篇 |
| 2006年 | 3046篇 |
| 2005年 | 3084篇 |
| 2004年 | 2752篇 |
| 2003年 | 2606篇 |
| 2002年 | 2355篇 |
| 2001年 | 393篇 |
| 2000年 | 267篇 |
| 1999年 | 347篇 |
| 1998年 | 414篇 |
| 1997年 | 359篇 |
| 1996年 | 286篇 |
| 1995年 | 326篇 |
| 1994年 | 278篇 |
| 1993年 | 255篇 |
| 1992年 | 229篇 |
| 1991年 | 197篇 |
| 1990年 | 177篇 |
| 1989年 | 168篇 |
| 1988年 | 159篇 |
| 1987年 | 137篇 |
| 1986年 | 125篇 |
| 1985年 | 123篇 |
| 1984年 | 131篇 |
| 1983年 | 109篇 |
| 1982年 | 138篇 |
| 1981年 | 147篇 |
| 1980年 | 103篇 |
| 1979年 | 74篇 |
| 1978年 | 72篇 |
| 1977年 | 72篇 |
| 1976年 | 59篇 |
| 1975年 | 53篇 |
| 1973年 | 57篇 |
排序方式： 共有10000条查询结果，搜索用时 15 毫秒
21.
22.
Helmer Philipp Schlesinger Tobias Hottenrott Sebastian Papsdorf Michael Wöckel Achim Diessner Joachim Stumpner Jan Sitter Magdalena Skazel Tobias Wurmb Thomas Härtel Christoph Hofer Stefan Alkatout Ibrahim Girard Thierry Meybohm Patrick Kranke Peter 《Der Anaesthesist》2022,71(3):171-180
Die Anaesthesiologie - Die Implementierung eines Patient Blood Management (PBM) wird zunehmender Standard in der operativen Medizin. Seit einiger Zeit gilt das Interesse auch den vulnerablen... 相似文献
23.
Familial risk and heritability of intellectual disability: a population-based cohort study in Sweden
24.
Kevin G. Byrnes Patrick A. Kiely Colum P. Dunne Kieran W. McDermott John Calvin Coffey 《Clinical anatomy (New York, N.Y.)》2021,34(1):82-89
COVID‐19 has generated a global need for technologies that enable communication, collaboration, education and scientific discourse whilst maintaining physical distance. University closures due to COVID‐19 and physical distancing measures disrupt academic activities that previously occurred face‐to‐face. Restrictions placed on universities due to COVID‐19 have precluded most conventional forms of education, assessment, research and scientific discourse. Anatomists now require valid, robust and easy‐to‐use communication tools to facilitate remote teaching, learning and research. Recent advances in communication, video conferencing and digital technologies may facilitate continuity of teaching and research activities. Examples include highly‐interactive video conferencing technology, collaborative tools, social media and networking platforms. In this narrative review, we examine the utility of these technologies in supporting effective communication and professional activities of anatomists during COVID‐19 and after. 相似文献
25.
Christine A. White Ayub Akbari Celine Allen Andrew G. Day Patrick A. Norman David Holland Michael A. Adams Greg A. Knoll 《Kidney international》2021,99(4):957-966
- Download : Download high-res image (308KB)
- Download : Download full-size image
26.
27.
28.
29.
Francis I. Baffour Michael R. Moynagh Patrick W. Eiken Brian T. Welch A. Nicholas Kurup Thomas D. Atwell Grant D. Schmit 《Journal of vascular and interventional radiology : JVIR》2019,30(1):82-86
Purpose
To retrospectively evaluate effectiveness and safety of percutaneous CT-guided rib biopsy.Materials and Methods
CT-guided core rib biopsies were performed in 249 consecutive patients between January 2002 and June 2016. Mean patient age was 64.8 years ± 13.8. Additional patient demographics, rib lesion characteristics, and procedural techniques were reviewed. Diagnostic yield was assessed, and complications were classified using SIR criteria.Results
Mean maximal diameter of 249 rib lesions was 2.7 cm ± 1.8, and 107 (43%) rib lesions had an associated extraosseous soft tissue component. Of rib lesions, 172 (69%) were lytic, 75 (30%) were sclerotic, and 2 (1%) were identifiable only with positron emission tomography/CT correlation. Specimens from 241 (96.8%) biopsies were adequate for pathologic diagnosis, whereas 8 (3.2%) were nondiagnostic. Of diagnostic biopsies, 168 (69.7%) were positive for malignancy; 73 (30.3%) revealed benign etiologies. There was a significant difference in diagnostic biopsy rate depending on size of the rib lesion (mean 2.8 cm ± 1.8 for diagnostic biopsies vs mean 1.3 cm ± 0.5 for nondiagnostic biopsies; P = .007). Of rib lesions, 170 (99%) lytic lesions and 69 (92%) sclerotic lesions yielded diagnostic biopsies; diagnostic biopsy rate was significantly higher for lytic lesions than sclerotic lesions (P = .01). There were 14 (5.6%) minor complications and no major complications.Conclusions
Percutaneous CT-guided core rib biopsy resulted in high diagnostic yield and low complications. Diagnostic biopsy rates were higher with larger lesion size and lytic rib lesions. 相似文献30.