全文获取类型
收费全文 | 1539038篇 |
免费 | 109473篇 |
国内免费 | 4642篇 |
专业分类
耳鼻咽喉 | 19428篇 |
儿科学 | 49532篇 |
妇产科学 | 40457篇 |
基础医学 | 227326篇 |
口腔科学 | 40655篇 |
临床医学 | 146347篇 |
内科学 | 301763篇 |
皮肤病学 | 31577篇 |
神经病学 | 130262篇 |
特种医学 | 54584篇 |
外国民族医学 | 467篇 |
外科学 | 209767篇 |
综合类 | 29593篇 |
现状与发展 | 1篇 |
一般理论 | 519篇 |
预防医学 | 132301篇 |
眼科学 | 32915篇 |
药学 | 113459篇 |
6篇 | |
中国医学 | 3790篇 |
肿瘤学 | 88404篇 |
出版年
2021年 | 14092篇 |
2019年 | 15132篇 |
2018年 | 22794篇 |
2017年 | 16556篇 |
2016年 | 17578篇 |
2015年 | 20102篇 |
2014年 | 26002篇 |
2013年 | 40280篇 |
2012年 | 58633篇 |
2011年 | 61300篇 |
2010年 | 34211篇 |
2009年 | 30438篇 |
2008年 | 54952篇 |
2007年 | 58178篇 |
2006年 | 57282篇 |
2005年 | 55517篇 |
2004年 | 52709篇 |
2003年 | 49685篇 |
2002年 | 47862篇 |
2001年 | 65180篇 |
2000年 | 66941篇 |
1999年 | 56251篇 |
1998年 | 15477篇 |
1997年 | 13982篇 |
1996年 | 13746篇 |
1995年 | 13041篇 |
1994年 | 12173篇 |
1993年 | 11390篇 |
1992年 | 43937篇 |
1991年 | 42957篇 |
1990年 | 41511篇 |
1989年 | 39306篇 |
1988年 | 36426篇 |
1987年 | 35388篇 |
1986年 | 33767篇 |
1985年 | 32100篇 |
1984年 | 24143篇 |
1983年 | 20540篇 |
1982年 | 12294篇 |
1979年 | 21791篇 |
1978年 | 15487篇 |
1977年 | 12721篇 |
1976年 | 12411篇 |
1975年 | 12789篇 |
1974年 | 15616篇 |
1973年 | 15292篇 |
1972年 | 14144篇 |
1971年 | 13210篇 |
1970年 | 12196篇 |
1969年 | 11164篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
52.
Annals of Nuclear Medicine - The Response Evaluation Criteria In Solid Tumors (RECIST) is the most used radiological method for evaluating response after peptide receptor radionuclide therapy... 相似文献
53.
54.
Jamaal L. Benjamin MD PhD Rebecca Dennis DO Stacy White Jr MD David Munson MD Sudha A. Anupindi MD Maciej Piskunowicz MD Kassa Darge MD PhD Ami Gokli MD Misun Hwang MD 《Journal of ultrasound in medicine》2020,39(5):1031-1036
Bowel diseases of prematurity, including necrotizing enterocolitis, are dreaded ailments of neonates. Early diagnosis is difficult, with clinical and radiographic findings often inconclusive. We present a novel use of contrast-enhanced ultrasound in detection of pediatric bowel disease. Early identification of compromised blood flow or an at-risk bowel can be quantitatively detected and monitored. This ability has implications for guidance of emerging therapies, allowing targeting of inflammation. These findings represent an advancement in detection of bowel disease in neonates. 相似文献
55.
56.
T. Wu L. G. Trahair M. J. Bound C. F. Deacon M. Horowitz C. K. Rayner K. L. Jones 《Diabetic medicine》2015,32(5):595-600
57.
In 1963, Goffman argued that forming a group based on shared stigma may provide benefits. However, there is no empirical research on whether perception that a separate, unique, coherent group exists (i.e., group entitativity) influences coping, such as educating others or secrecy, for the stigmatized individual or his or her spouse. Further, little is known about how spouses influence each other in terms of promoting the education of others about a stigmatizing condition, especially when it comes to the role of believing that stigma-based groups, to which they may both belong, exist. This study provides a step toward bridging this gap in the research by applying the label management model in efforts to understand coping for couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). This study included 50 married couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). We found that group entitativity related to those with AATD counterbalanced the influence of genetic stigma on spouses’ intentions to keep the diagnosis secret or to educate others about it. Intrapersonal and interpersonal influences appeared among spouses. Attention is needed on the power of creating groups for stigmatized persons and their relatives. Indeed, people live within a dynamic world of group entities, and multiple social identities including spousal and familial. While attention has been paid to the diffusion of stigmas to loved ones, less has been paid to the uplift of group entities for them. 相似文献
58.
Feasibility and Diagnostic Potential of Pulmonary Transit Time Measurement by Contrast Echocardiography: A Pilot Study
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)
59.
Marta Rozanski Valentin Neuhaus Emily Thornton Stéphanie J. E. Becker James P. Rathmell David Ring 《Journal of hand and microsurgery》2015,7(1):30-35
This study used the National Survey of Ambulatory Surgery (NSAS) database to measure the incidence of and risk factors for symptoms in the ambulatory surgery center and problems within 24 h after isolated carpal tunnel release (CTR). The NSAS contained records on 400,000 adult patients with carpal tunnel syndrome who were treated with CTR in 2006, based on ICD-9 codes. The type of anesthesia used and factors associated with symptoms and problems were sought in bivariate and multivariable statistical analyses. The mean duration of the procedure was 16 ± 8.8 min. Only 5 % were performed under local anesthesia without sedation, 45 % with IV sedation, 28 % regional anesthesia, and 19 % general anesthesia. Symptoms in the ambulatory surgery center or a problem within 24 h after discharge were recorded in 10 % of patients, all of them minor and transient, including difficulties with pain and its treatment. The strongest risk factors were male sex, age of 45 years and older, and participation of an anesthesiologist. Local anesthesia and regional anesthesia were associated with more perioperative symptoms and postoperative problems. Most CTR are performed with some sedation in the United States. CTR is a safe procedure: one in 10 patients will experience a minor issue in the perioperative or immediate postoperative period. 相似文献
60.