全文获取类型
收费全文 | 6868篇 |
免费 | 500篇 |
国内免费 | 34篇 |
专业分类
耳鼻咽喉 | 54篇 |
儿科学 | 129篇 |
妇产科学 | 82篇 |
基础医学 | 1102篇 |
口腔科学 | 48篇 |
临床医学 | 817篇 |
内科学 | 1911篇 |
皮肤病学 | 104篇 |
神经病学 | 608篇 |
特种医学 | 233篇 |
外科学 | 941篇 |
综合类 | 23篇 |
预防医学 | 519篇 |
眼科学 | 51篇 |
药学 | 388篇 |
中国医学 | 10篇 |
肿瘤学 | 382篇 |
出版年
2023年 | 33篇 |
2022年 | 49篇 |
2021年 | 183篇 |
2020年 | 96篇 |
2019年 | 169篇 |
2018年 | 197篇 |
2017年 | 112篇 |
2016年 | 128篇 |
2015年 | 188篇 |
2014年 | 259篇 |
2013年 | 319篇 |
2012年 | 524篇 |
2011年 | 510篇 |
2010年 | 293篇 |
2009年 | 269篇 |
2008年 | 453篇 |
2007年 | 464篇 |
2006年 | 450篇 |
2005年 | 473篇 |
2004年 | 429篇 |
2003年 | 424篇 |
2002年 | 407篇 |
2001年 | 74篇 |
2000年 | 66篇 |
1999年 | 103篇 |
1998年 | 93篇 |
1997年 | 66篇 |
1996年 | 52篇 |
1995年 | 53篇 |
1994年 | 47篇 |
1993年 | 19篇 |
1992年 | 34篇 |
1991年 | 29篇 |
1990年 | 42篇 |
1989年 | 34篇 |
1988年 | 34篇 |
1987年 | 27篇 |
1986年 | 24篇 |
1985年 | 16篇 |
1984年 | 15篇 |
1983年 | 13篇 |
1982年 | 11篇 |
1979年 | 10篇 |
1978年 | 10篇 |
1977年 | 7篇 |
1975年 | 10篇 |
1973年 | 12篇 |
1972年 | 8篇 |
1971年 | 13篇 |
1968年 | 9篇 |
排序方式: 共有7402条查询结果,搜索用时 0 毫秒
81.
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
82.
George Kosmadakis Enrique Da Costa Correia Odette Carceles Frederic Somda Didier Aguilera 《Renal failure》2014,36(4):638-650
Despite the significant technical evolution of the blood purification methods, cardiovascular morbidity and mortality in dialysis patients is still several times higher than that observed in the general population. Vitamins are playing a crucial role in multiple key metabolic pathways. Due to multiple factors, dialysis patients present very often hypo- or hypervitaminosis for a broad range of vitamins. Dialysis in the context of renal replacement therapy is associated with a non-physiological potassium-sparing dietetic regime. Additionally, there is a non-selective intradialytic loss of micro- and macronutrients, deranged intracellular kinetics and gastrointestinal malabsorption due to uratemia. Frequent treatment with antibiotics due to infections associated with the acquired uremia-related immunosuppression may derange the vitamin-producing intestinal microflora. Certain agents prescribed in the context of renal failure or other conditions may reduce the absorption of vitamins from the gastrointestinal tract. These factors may deplete a dialysis patient from vitamins, especially the ones with antioxidant activity that may be associated with cardioprotective properties. In other cases, vitamins metabolized and excreted by the kidneys may be accumulated and exert toxic effects. The scope of this paper is to describe the main issues on vitamin therapy in dialysis patients in view of the ever contradictory opinions and practices. 相似文献
83.
84.
Karen L. Robins‐Browne Allen C. Cheng Kathleen A. S. Thomas Didier J. Palmer Bart J. Currie Joshua S. Davis 《Tropical medicine & international health : TM & IH》2012,17(7):914-919
Objective To prospectively compare a modified pneumonia severity scoring system, SMARTACOP, with other severity scores in patients presenting with pneumonia to the emergency department (ED) of a tertiary referral hospital in tropical Australia. Methods We conducted a prospective observational study of adult patients presenting with radiologically confirmed pneumonia over a 12‐month period. The sensitivity of risk stratification scores were assessed against the need for intensive respiratory or vasopressor support (IRVS). Results There were 367 ED attendances for pneumonia of whom 77.1% were admitted to hospital, 10% required intensive respiratory or vasopressor support and 2.8% died. Mean age was 50.0 years, 52% were men and 59% were Indigenous. The sensitivity of a SMART‐COP score ≥3, a SMARTACOP score ≥3 and a pneumonia severity index (PSI) class ≥3 for predicting IRVS was 97%, 97% and 78% respectively. Conclusions We found no significant advantage of the SMARTACOP over the SMART‐COP score for the prediction of intensive respiratory or vasopressor support, but both scores significantly outperformed PSI. The SMART‐COP score should replace the PSI in tropical Australia and should be assessed in other tropical areas for pneumonia risk stratification in emergency departments. 相似文献
85.
86.
87.
Left superior pulmonary vein connected to superior vena cava vein in a patient with situs inversus totalis: A challenging diagnosis
下载免费PDF全文
![点击此处可从《Echocardiography (Mount Kisco, N.Y.)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Lionel Rozen MD Nadia Debbas MD PhD Nash Damry MD Aurelia David‐Cojocariu MD Didier de Cannière MD PhD Philippe Unger MD PhD 《Echocardiography (Mount Kisco, N.Y.)》2017,34(11):1733-1735
We herein describe the previously unreported combination of partial anomalous venous connection to the superior vena cava combined with situs inversus totalis. Following peripheral contrast injection, bubbles appeared initially in the left atrium allowing the diagnosis of a supra‐atrial connection to be made using transthoracic echocardiography, but this timing was not anymore reproduced during transesophageal echocardiography performed minutes later. Cardiac computed tomography allowed the final diagnosis to be made. This case emphasizes the importance of performing bubble studies both during transesophageal and transthoracic echocardiography. 相似文献
88.
The manipulation of the gut microbiota by diet, antibiotics, or probiotics could promote, prevent, or reverse the development of specific diseases, including obesity. A link has been proposed between obesity and the growth promoters (probiotics and antibiotics) that have been used in animals for more than 40 years to induce weight gain. Several species of the Lactobacillus genus that are frequently used as probiotics for human consumption merit particular attention because they are increased in the gut microbiota under high-fat diets, are more abundant in obese humans, and are selected by growth-promoter antibiotics; moreover, the administration of these bacteria in experimental models is linked to the development of obesity. However, other species or strains of the same genus are associated with an antiobesity effect. Newborns and infants are a particularly susceptible population in which the administration of antibiotics or probiotics could be related to the development of obesity in adulthood. 相似文献
89.
90.