全文获取类型
收费全文 | 5569篇 |
免费 | 248篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 54篇 |
儿科学 | 400篇 |
妇产科学 | 72篇 |
基础医学 | 479篇 |
口腔科学 | 255篇 |
临床医学 | 409篇 |
内科学 | 1038篇 |
皮肤病学 | 183篇 |
神经病学 | 433篇 |
特种医学 | 214篇 |
外科学 | 911篇 |
综合类 | 102篇 |
一般理论 | 1篇 |
预防医学 | 244篇 |
眼科学 | 236篇 |
药学 | 353篇 |
中国医学 | 30篇 |
肿瘤学 | 419篇 |
出版年
2024年 | 5篇 |
2023年 | 40篇 |
2022年 | 81篇 |
2021年 | 194篇 |
2020年 | 93篇 |
2019年 | 149篇 |
2018年 | 161篇 |
2017年 | 148篇 |
2016年 | 156篇 |
2015年 | 190篇 |
2014年 | 271篇 |
2013年 | 327篇 |
2012年 | 506篇 |
2011年 | 523篇 |
2010年 | 280篇 |
2009年 | 235篇 |
2008年 | 339篇 |
2007年 | 335篇 |
2006年 | 280篇 |
2005年 | 312篇 |
2004年 | 270篇 |
2003年 | 211篇 |
2002年 | 194篇 |
2001年 | 41篇 |
2000年 | 34篇 |
1999年 | 52篇 |
1998年 | 44篇 |
1997年 | 27篇 |
1996年 | 26篇 |
1995年 | 28篇 |
1994年 | 21篇 |
1993年 | 16篇 |
1992年 | 27篇 |
1991年 | 17篇 |
1990年 | 14篇 |
1989年 | 16篇 |
1988年 | 16篇 |
1987年 | 17篇 |
1986年 | 15篇 |
1985年 | 16篇 |
1984年 | 13篇 |
1983年 | 8篇 |
1982年 | 11篇 |
1981年 | 7篇 |
1980年 | 8篇 |
1979年 | 8篇 |
1978年 | 10篇 |
1976年 | 6篇 |
1975年 | 4篇 |
1973年 | 4篇 |
排序方式: 共有5833条查询结果,搜索用时 15 毫秒
81.
Thirunavukkarasu Arun Babu Shanthi Ananthakrishnan P. Jayakumar Poonam Kullu 《Indian journal of pediatrics》2014,81(5):504-506
Colitis is a rare manifestation of enteric fever in children. Toxic megacolon complicating typhoid colitis is even rarer and requires early recognition and aggressive management due to the high mortality associated with this condition. The authors report a rare case of Toxic megacolon secondary to typhoid colitis in a seven-year-old girl. 相似文献
82.
83.
Most of thoracic surgery developed as a result of efforts to treat tuberculosis (TB). The role of surgical therapy has declined but the role of surgery in TB still remains in situations like diagnostic difficulties, persistent sputum positive state despite therapy and complications and sequel like haemoptysis, destroyed or bronchiectatic lungs or empyema with or without broncho-pleural fistula (BPF). Various procedures have a role according to the indication. Some of the procedures have become obsolete but lobectomy, pneumonectomy, thoracoplasty, decortication and open window thoracostomy continue to be relevant. Recent published series have demonstrated mortality ranging from 0% to 3.1%. Surgery for complications and sequel of pulmonary TB still remain an important intervention for alleviation of human misery.KEYWORDS : Thoracic surgery, tuberculosis (TB), surgery, pneumonectomy, thoracoplasty, decortication, window thoracostomy 相似文献
84.
Abraham Samuel Babu Kushal Madan Sundar Kumar Veluswamy Rahul Mehra Arun G. Maiya 《Progress in cardiovascular diseases》2014
Worksite health and wellness (WH&W) are gaining popularity in targeting cardiovascular (CV) risk factors among various industries. India is a large country with a larger workforce in the unorganized sector than the organized sector. This imbalance creates numerous challenges and barriers to implementation of WH&W programs in India. Large scale surveys have identified various CV risk factors across various industries. However, there is scarcity of published studies focusing on the effects of WH&W programs in India. This paper will highlight: 1) the current trend of CV risk factors across the industrial community, 2) the existing models of delivery for WH&W in India and their barriers, and 3) a concise evidence based review of various WH&W interventions in India. 相似文献
85.
Non‐alcoholic steatohepatitis (NASH) is the most common cause of liver disease in Western populations, and its prevalence is increasing rapidly. It is part of a multisystem disease affecting other organs such as the kidneys, heart and blood vessels, and is closely associated with the components of the metabolic syndrome. Physicians managing patients with NASH should not only focus on the management of NASH, but also on associated comorbidities in individual patients. The approaches to treatment of NASH include either limiting energy surplus alone, or in combination with targeting of downstream pathways of inflammation and fibrosis. In this mini‐review, we discuss the currently available treatment options for NASH, as well as those in late‐stage clinical trials. We discuss the challenges of managing these patients with a limited number of approved therapies, as well as managing advanced‐stage patients with NASH and cirrhosis. We also discuss the specific management of comorbidities in NASH patients, in particular diabetes, hypertension, dyslipidaemia and cardiovascular diseases. Finally, we present the screening protocols for both hepatocellular carcinoma and extrahepatic malignancies in these patients. 相似文献
86.
87.
New direct-acting antiviral agents for the treatment of hepatitis C virus infection and perspectives
Until recently, the standard of care (SOC) for patients with chronic hepatitis C virus (HCV) infection has consisted of a combination of pegylated interferon-α [corrected] plus ribavirin, administered for 24- to 48-weeks depending on the HCV genotype. The sustained virologic response rate for this SOC has been only about 50% in patients infected with genotype 1 HCV, the most prevalent genotype in Europe and North America. HCV therapy has been revolutionised recently by the approval of two direct-acting antiviral agents (DAA) against the NS3/4A serine protease for use in genotype 1 HCV, the ketoamide inhibitors boceprevir and telaprevir. The novel SOC marks the beginning of an extraordinary new era in HCV therapy. We review this new SOC with an emphasis on practical issues related to protease inhibitors, e.g. prescribing guidelines, futility rules and management of adverse events. We also give a perspective on what to expect in the coming years. Newer DAA with simplified dosing regimens and/or minimal toxicity which, when used in combination, will lead to viral eradication in most if not all CHC patients who undergo treatment. The novel agents in clinical development are paving the way for future interferon-sparing regimens. 相似文献
88.
Duan C Karnik R Lu MC Majumdar A 《Proceedings of the National Academy of Sciences of the United States of America》2012,109(10):3688-3693
Cavitation, known as the formation of vapor bubbles when liquids are under tension, is of great interest both in condensed matter science as well as in diverse applications such as botany, hydraulic engineering, and medicine. Although widely studied in bulk and microscale-confined liquids, cavitation in the nanoscale is generally believed to be energetically unfavorable and has never been experimentally demonstrated. Here we report evaporation-induced cavitation in water-filled hydrophilic nanochannels under enormous negative pressures up to -7 MPa. As opposed to receding menisci observed in microchannel evaporation, the menisci in nanochannels are pinned at the entrance while vapor bubbles form and expand inside. Evaporation in the channels is found to be aided by advective liquid transport, which leads to an evaporation rate that is an order of magnitude higher than that governed by Fickian vapor diffusion in macro- and microscale evaporation. The vapor bubbles also exhibit unusual motion as well as translational stability and symmetry, which occur because of a balance between two competing mass fluxes driven by thermocapillarity and evaporation. Our studies expand our understanding of cavitation and provide new insights for phase-change phenomena at the nanoscale. 相似文献
89.
The method that we use has an initial cost (£ 150) and uses fewer materials for dressing daily than other methods. It is easy to use at the extremities and is effective in preventing amputation in some diabetics. 相似文献
90.
Placement of a drain following abdominal surgery is common despite a lack of convincing evidence in the current literature to support this practice. The use of intra-abdominal drain is associated with many potential and serious complications. We report a drain site evisceration of the right fallopian tube after the removal of an intra-abdominal drain. The drain was placed in the right iliac fossa in a patient who underwent a lower segment Caesarean section (LSCS) for meconium liquor with fetal distress. The Pfannenstiel incision made for LSCS was reopened and the protruding inflamed fimbrial end of the right fallopian tube was excised. The patient made an uneventful recovery. Routine intra-abdominal prophylactic drain following an abdominal surgery including LSCS should be discouraged. 相似文献