全文获取类型
收费全文 | 277144篇 |
免费 | 22854篇 |
国内免费 | 14517篇 |
专业分类
耳鼻咽喉 | 2597篇 |
儿科学 | 3953篇 |
妇产科学 | 5474篇 |
基础医学 | 32598篇 |
口腔科学 | 4877篇 |
临床医学 | 34184篇 |
内科学 | 48237篇 |
皮肤病学 | 3372篇 |
神经病学 | 16697篇 |
特种医学 | 9692篇 |
外国民族医学 | 97篇 |
外科学 | 31639篇 |
综合类 | 34520篇 |
现状与发展 | 48篇 |
一般理论 | 61篇 |
预防医学 | 17974篇 |
眼科学 | 7445篇 |
药学 | 26735篇 |
165篇 | |
中国医学 | 10949篇 |
肿瘤学 | 23201篇 |
出版年
2024年 | 725篇 |
2023年 | 3645篇 |
2022年 | 8919篇 |
2021年 | 11998篇 |
2020年 | 8754篇 |
2019年 | 8153篇 |
2018年 | 8718篇 |
2017年 | 7501篇 |
2016年 | 7237篇 |
2015年 | 10717篇 |
2014年 | 13685篇 |
2013年 | 13377篇 |
2012年 | 19749篇 |
2011年 | 21510篇 |
2010年 | 13005篇 |
2009年 | 10549篇 |
2008年 | 14976篇 |
2007年 | 15263篇 |
2006年 | 14872篇 |
2005年 | 14887篇 |
2004年 | 10982篇 |
2003年 | 9942篇 |
2002年 | 8849篇 |
2001年 | 6253篇 |
2000年 | 6295篇 |
1999年 | 6733篇 |
1998年 | 4136篇 |
1997年 | 4046篇 |
1996年 | 3155篇 |
1995年 | 2929篇 |
1994年 | 2545篇 |
1993年 | 1774篇 |
1992年 | 2504篇 |
1991年 | 2163篇 |
1990年 | 1825篇 |
1989年 | 1607篇 |
1988年 | 1417篇 |
1987年 | 1347篇 |
1986年 | 1082篇 |
1985年 | 917篇 |
1984年 | 763篇 |
1983年 | 624篇 |
1982年 | 560篇 |
1981年 | 482篇 |
1980年 | 447篇 |
1979年 | 359篇 |
1978年 | 303篇 |
1977年 | 267篇 |
1976年 | 243篇 |
1974年 | 212篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
It's all about sex: gender, lung development and lung disease. 总被引:1,自引:0,他引:1
Michelle A Carey Jeffrey W Card James W Voltz Samuel J Arbes Dori R Germolec Kenneth S Korach Darryl C Zeldin 《Trends in Endocrinology and Metabolism》2007,18(8):308-313
Accumulating evidence suggests that gender affects the incidence, susceptibility and severity of several lung diseases. Gender also influences lung development and physiology. Data from both human and animal studies indicate that sex hormones might contribute to disease pathogenesis or serve as protective factors, depending on the disease involved. In this review, the influence of gender and sex hormones on lung development and pathology will be discussed, with specific emphasis on pulmonary fibrosis, asthma and cancer. 相似文献
103.
Qualls E J Stevens Jason M Seibly Ying H Chen Rob D Dickerman Jerry Noel Keith A Kattner 《Journal of clinical neuroscience》2007,14(6):585-589
The adequate treatment of methicillin-resistant Staphylococcus aureus (MRSA) osteomyelitis has intrigued clinicians for some time. As the resistance of these pathogens, coupled with the increase in community-acquired cases, continues steadily to rise, clinicians are finding it useful to employ multi-modal approaches for efficacious treatment. The authors present a single case report of a patient with recurrent MRSA osteomyelitis, lumbar paraspinal and epidural abscess. He was found to have decreased muscle strength and was hyporeflexic in the involved extremity. Serum testing demonstrated MRSA bacteremia. Neuroimaging studies revealed evidence of paraspinal abscess and a presumed herniated nucleus pulposus at the L5/S1 interspace with significant nerve root compromise. Despite antimicrobials, his symptoms persisted, necessitating surgical exploration. At surgery, paraspinal and epidural abscesses were encountered and debrided; however, no herniated disc was visualized. This case demonstrates the diagnostic and therapeutic dilemmas with which these lesions present. We postulate that the MRSA osteomyelitis/discitis pathogens were walled off in the disc space and subsequently inoculated the soft tissues with ensuing bacteremia. We concur that antimicrobial treatment should be the first line of therapy for these patients; however, surgical debridements and cautious spinal instrumentation should be employed where appropriate. 相似文献
104.
Fahim Zaman Atta Nawabi Kenneth D Abreo Gazi B Zibari 《JSLS, Journal of the Society of Laparoendoscopic Surgeons》2005,9(3):262-265
Laparoscopic procedures continue to gain popularity over traditional open procedures for a number of abdominal and pelvic surgeries. With increasing experience, the application of this technique is rising because it provides an alternative, less invasive, approach to various surgical procedures. Herein, we report our experience with adult patients with polycystic kidney disease, requiring bilateral laparoscopic nephrectomy before renal transplantation. 相似文献
105.
指背腱膜的解剖学研究 总被引:1,自引:1,他引:0
目的 探讨指背腱膜的构成特点及临床意义。方法 在30只成人尸体手标本上,通过模拟手术,对指背腱膜的构成特点进行了应用解剖学观测。结果 指背腱膜的构成复杂,其中的外侧腱束、外侧束、外侧腱和中央束在手指畸形的发生中有着特殊的临床意义。外侧腱束主要形成伸近节指间关节的功能解剖机制;其与外侧束形成的密切纤维联系而具有协同外侧腱的功能;该腱束与屈肌腱鞘有联系又使其具有平衡屈肌和伸肌肌力的作用。中央束在指背腱膜的整体协调、畸形的发生及矫正过程中起着重要的功能。结论 通过对指背腱膜的解剖研究,可以解释因指屈、伸肌腱平衡被破坏后所形成的畸形。 相似文献
106.
Donald B. Penzien PhD ; Frank Andrasik PhD ; Brian M. Freidenberg PhD ; Timothy T. Houle PhD ; Alvin E. Lake III PhD; Gay L. Lipchik PhD ; Kenneth A. Holroyd PhD ; Richard B. Lipton MD ; Douglas C. McCrory MD ; Justin M. Nash PhD ; Robert A. Nicholson PhD ; Scott W. Powers PhD ABPP ; Jeanetta C. Rains PhD ; David A. Wittrock PhD 《Headache》2005,45(S2):S110-S132
Guidelines for design of clinical trials evaluating behavioral headache treatments were developed to facilitate production of quality research evaluating behavioral therapies for management of primary headache disorders. These guidelines were produced by a Workgroup of headache researchers under auspices of the American Headache Society. The guidelines are complementary to and modeled after guidelines for pharmacological trials published by the International Headache Society, but they address methodologic considerations unique to behavioral and other nonpharmacological treatments. Explicit guidelines for evaluating behavioral headache therapies are needed as the optimal methodology for behavioral (and other nonpharmacologic) trials necessarily differs from the preferred methodology for drug trials. In addition, trials comparing and integrating drug and behavioral therapies present methodological challenges not addressed by guidelines for pharmacologic research. These guidelines address patient selection, trial design for behavioral treatments and for comparisons across multiple treatment modalities (eg, behavioral vs pharmacologic), evaluation of results, and research ethics. Although developed specifically for behavioral therapies, the guidelines may apply to the design of clinical trials evaluating many forms of nonpharmacologic therapies for headache. 相似文献
107.
Chee-Yueh Angie Ho Chun-Yu Chen Min-Wen Yang Hung-Ping Liu 《European journal of cardio-thoracic surgery》2005,28(1):174-175
Functional separation of the lungs may be accomplished by several methods. Patient with restricted mouth opening has limited options for one-lung ventilation. We report the use of wire-guided endobronchial blockade, a new tool for achieving one-lung ventilation in a patient with restricted mouth opening requiring nasotracheal, fiberoptic intubation for esophagectomy and reconstruction with gastric tube substitution. 相似文献
108.
[目的] 加强对输入性医学媒介生物预警应急工作,防止媒介传入,保障我国人民身体健康.[方法] 对江苏口岸2002~2005年上半年输入性媒介生物截获情况进行统计分析.[结果] 2002~2005年上半年江苏口岸输入性媒介生物疫情截获率逐年上升.[结论] 传染病传播媒介生物的监测、病原携带检测和传入性风险分析,将作为世界卫生组织评估“监测技术水平、预警反应能力和处置实力”的重要指标之一,成为各成员国关注的焦点,同时也将成为各成员国间设置贸易技术壁垒的重要手段之一.因此,加强传染病传播媒介生物监测和控制工作势在必行. 相似文献
109.
110.
Kenneth M. Flegel 《Canadian Medical Association journal》2005,173(10):1213-1214