全文获取类型
收费全文 | 6358篇 |
免费 | 474篇 |
国内免费 | 32篇 |
专业分类
耳鼻咽喉 | 53篇 |
儿科学 | 102篇 |
妇产科学 | 65篇 |
基础医学 | 1051篇 |
口腔科学 | 44篇 |
临床医学 | 773篇 |
内科学 | 1757篇 |
皮肤病学 | 88篇 |
神经病学 | 564篇 |
特种医学 | 225篇 |
外科学 | 853篇 |
综合类 | 20篇 |
预防医学 | 500篇 |
眼科学 | 45篇 |
药学 | 360篇 |
中国医学 | 9篇 |
肿瘤学 | 355篇 |
出版年
2023年 | 30篇 |
2022年 | 39篇 |
2021年 | 173篇 |
2020年 | 89篇 |
2019年 | 161篇 |
2018年 | 180篇 |
2017年 | 104篇 |
2016年 | 117篇 |
2015年 | 179篇 |
2014年 | 251篇 |
2013年 | 298篇 |
2012年 | 494篇 |
2011年 | 478篇 |
2010年 | 278篇 |
2009年 | 254篇 |
2008年 | 434篇 |
2007年 | 442篇 |
2006年 | 427篇 |
2005年 | 445篇 |
2004年 | 407篇 |
2003年 | 404篇 |
2002年 | 395篇 |
2001年 | 65篇 |
2000年 | 53篇 |
1999年 | 89篇 |
1998年 | 89篇 |
1997年 | 59篇 |
1996年 | 48篇 |
1995年 | 50篇 |
1994年 | 43篇 |
1993年 | 18篇 |
1992年 | 24篇 |
1991年 | 24篇 |
1990年 | 38篇 |
1989年 | 27篇 |
1988年 | 28篇 |
1987年 | 20篇 |
1986年 | 18篇 |
1985年 | 10篇 |
1984年 | 12篇 |
1983年 | 8篇 |
1982年 | 8篇 |
1981年 | 4篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1975年 | 4篇 |
1973年 | 7篇 |
1972年 | 3篇 |
1971年 | 6篇 |
1966年 | 3篇 |
排序方式: 共有6864条查询结果,搜索用时 15 毫秒
81.
Philippe Arbeille Didier Chaput Kathryn Zuj Arielle Depriester Alain Maillet Olivier Belbis Patrice Benarroche Sebastien Barde 《Ultrasound in medicine & biology》2018,44(11):2406-2412
Echography is the most appropriate imaging modality for investigating astronauts. Unfortunately, it requires a great deal of training to perform ultrasound examinations, which can be difficult and time consuming, especially if the astronaut does not have a medical background. We designed a new echography system with motorized probes that allows for the majority of exam functions to be controlled by a ground-based sonographer. Using tele-operation, the sonographer controls the orientation of the transducer (tilt, rotation) and echograph settings (gain, depth, freeze) and triggers ultrasound functions (pulsed wave color Doppler, 3-D capture, radiofrequency data collection, elastography). With this system, astronauts are required to hold the motorized probe only at the locations indicated, with the remainder of the exam being conducted by the ground-based sonographer. During spaceflight, ultrasound imaging of the carotid artery, jugular vein, thyroid, liver, gallbladder, biliary tract and portal vein (2-D, 3-D, color, pulsed wave, radiofrequency) were successfully performed. 相似文献
82.
83.
84.
Sophie Edouard Hervé Tissot‐Dupont Grégory Dubourg Annick Bernard Pierre‐Edouard Fournier Isabelle Ravaux Andreas Stein Didier Raoult 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2017,125(10):916-920
M. genitalium is a reemerging microorganism, responsible for sexually transmissible infections (STIs), with prevalence which varies depending on the country and population group studied. We report here M. genitalium prevalence among the specimens received for STI diagnosis in our routine microbiological laboratory in the university hospital in Marseille, France. We tested 4 624 samples from 3 793 patients using qPCR for M. genitalium, C. trachomatis, N. gonorrheae, T. pallidum. Of these samples, 528 (13.6%) patients were tested positive for at least one pathogen and 126 (3.3%) were positive for M. genitalium. M. genitalium is the second most prevalent micro‐organism detected in women after C. trachomatis (10.4%) and the third most prevalent in men after C. trachomatis (5.1%) and N. gonorrhoeae (4.4%). We observed no significant differences between the prevalence of M. genitalium in vaginal, urethral and urine specimens (p = 0.9). Prevalence of M. genitalium is significantly higher in patients aged between 10–30 years (4.1%) compared to those aged between 30 and 50 years (2.7%) (p = 0.02, RR = 1.54 [1.06–2.24]) and patients over 50 years of age (1.1%) (p = 0.003, RR= 3.98 [1.47–10.8]). M. genitalium is a common agent of STI, therefore we suggest that this micro‐organism should be systematically tested during chronic, recurrent, or antibiotic resistant genital infections and in populations at high‐risk of STIs. 相似文献
86.
87.
Sandra Didier Jean-Charles Vauthier Nicolas Gambier Pierre Renaud Bruno Chenuel 《Research in sports medicine (Print)》2017,25(2):244-251
Endurance and ultra-endurance events have become increasingly popular. The aim of our study was to explore the use of medication among endurance runners participating in the 2014 Infernal Trail des Vosges. Among the 389 runners engaged, 297 (76.3%) completed a specific questionnaire dealing with substance use/misuse. Our results show a 27% (before the race) and 18% (during the race) prevalence of substance use. The two major classes of substances used were non-steroidal anti-inflammatory drugs (NSAIDs; 9.8%) and painkillers (6.7%), principally because of osteo-articular pain (29.6%) or to prevent pain (28.2%). A positive correlation was found between substance consumption before (past month) and during the race (overall medication: p < 0.0001; NSAIDs: p = 0.008). Our results could be explained by the specific characteristics of ultrarunners predominantly motivated by personal achievement and general health (recreational approach). However, education interventions should further be delivered regarding the risks of substance use in ultra-endurance events. 相似文献
88.
89.
90.
Didier Pin Véronique Guérin-Faublée Virginie Garreau Franck Breysse Oana Dumitrescu Jean-Pierre Flandrois Gerard Lina 《Emerging infectious diseases》2014,20(12):2111-2114
Bovine nodular thelitis is a granulomatous dermatitis associated with infection with acid-fast bacteria. To identify the mycobacterium responsible for this infection, we conducted phylogenetic investigations based on partial sequencing of 6 genes. These bacteria were identified as an undescribed Mycobacterium species that was phylogenetically related to M. leprae and M. lepromatosis. 相似文献