全文获取类型
收费全文 | 899篇 |
免费 | 48篇 |
国内免费 | 35篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 68篇 |
妇产科学 | 5篇 |
基础医学 | 95篇 |
口腔科学 | 28篇 |
临床医学 | 133篇 |
内科学 | 169篇 |
皮肤病学 | 24篇 |
神经病学 | 23篇 |
特种医学 | 206篇 |
外科学 | 66篇 |
综合类 | 24篇 |
一般理论 | 1篇 |
预防医学 | 38篇 |
眼科学 | 14篇 |
药学 | 44篇 |
中国医学 | 2篇 |
肿瘤学 | 34篇 |
出版年
2021年 | 8篇 |
2020年 | 4篇 |
2019年 | 11篇 |
2018年 | 17篇 |
2017年 | 13篇 |
2016年 | 16篇 |
2015年 | 21篇 |
2014年 | 14篇 |
2013年 | 33篇 |
2012年 | 21篇 |
2011年 | 16篇 |
2010年 | 42篇 |
2009年 | 39篇 |
2008年 | 15篇 |
2007年 | 20篇 |
2006年 | 22篇 |
2005年 | 37篇 |
2004年 | 19篇 |
2003年 | 5篇 |
2002年 | 13篇 |
2001年 | 20篇 |
2000年 | 17篇 |
1999年 | 28篇 |
1998年 | 50篇 |
1997年 | 51篇 |
1996年 | 49篇 |
1995年 | 34篇 |
1994年 | 41篇 |
1993年 | 35篇 |
1992年 | 17篇 |
1991年 | 17篇 |
1990年 | 11篇 |
1989年 | 25篇 |
1988年 | 46篇 |
1987年 | 22篇 |
1986年 | 15篇 |
1985年 | 28篇 |
1984年 | 6篇 |
1983年 | 3篇 |
1982年 | 6篇 |
1981年 | 8篇 |
1980年 | 9篇 |
1979年 | 6篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 12篇 |
1975年 | 3篇 |
1968年 | 3篇 |
1951年 | 2篇 |
1947年 | 2篇 |
排序方式: 共有982条查询结果,搜索用时 60 毫秒
31.
Julia ML Brotherton 《Journal of paediatrics and child health》2014,50(12):959-965
The development of efficacious prophylactic human papillomavirus vaccines provided an opportunity for the primary prevention of related infections and diseases. Certain oncogenic human papillomaviruses that preferentially infect the genital epithelium cause cervical cancer and a substantial proportion of anal, penile, vaginal, vulvar and oropharyngeal cancers. Following extensive clinical trials demonstrating their efficacy and safety, two vaccines have been in global use for over 6 years. This review summarises the accumulated evidence regarding their high level of efficacy, safety in population usage, reductions in genital warts, infections and cervical disease following their adoption, and facilitators and barriers to achieving high vaccination coverage. The review also discusses practical issues and frequently asked questions regarding duration of effect, vaccination of women treated for cervical disease and alternate vaccination schedules, as well as the need to review cervical screening strategies in the post‐ vaccination environment. 相似文献
32.
S. M. Wydo M. J. Seamon S. W. Melanson P. Thomas D. P. Bahner S. P. Stawicki 《European journal of trauma and emergency surgery》2016,42(2):151-159
Ultrasound technology has become ubiquitous in modern medicine. Its applications span the assessment of life-threatening trauma or hemodynamic conditions, to elective procedures such as image-guided peripheral nerve blocks. Sonographers have utilized ultrasound techniques in the pre-hospital setting, emergency departments, operating rooms, intensive care units, outpatient clinics, as well as during mass casualty and disaster management. Currently available ultrasound devices are more affordable, portable, and feature user-friendly interfaces, making them well suited for use in the demanding situation of a mass casualty incident (MCI) or disaster triage. We have reviewed the existing literature regarding the application of sonology in MCI and disaster scenarios, focusing on the most promising and practical ultrasound-based paradigms applicable in these settings. 相似文献
33.
34.
35.
36.
37.
Julia Bahner 《Sexuality and disability》2012,30(3):337-356
The purpose of this study is to explore the lived experience of sexuality for people with physical disabilities using formal personal assistance services in Sweden, from their own perspective. This is analyzed in relation to the aims of personal assistance services according to Swedish law, which states that they should be framed in terms of autonomy, integrity and self-determination making it possible to live a good life, on the same terms as non-disabled people. Data were collected through face-to-face interviews with ten assistance users and through observations on an online discussion forum for people with disabilities. The main findings of the study concern participants?? struggle to be recognized as sexual beings in order to be able to live as desired, as well as the different strategies needed to overcome obstacles in sexual expression. Results indicate the need to train personal assistants about handling assistance users?? sexuality and sexual situations. 相似文献
38.
Heterogeneous phenotypes of platelet and plasma von Willebrand factor in obligatory heterozygotes for severe von Willebrand disease 总被引:5,自引:0,他引:5
Mannucci PM; Lattuada A; Castaman G; Lombardi R; Colibretti ML; Ciavarella N; Rodeghiero F 《Blood》1989,74(7):2433-2436
To characterize the heterogeneity of severe (type III) von Willebrand disease (vWD), plasma and platelet von Willebrand factor antigen (vWF:Ag) and ristocetin cofactor activity (Ricof) were measured in 28 obligatory heterozygotes (ie, parents or children of probands from 15 different kindreds with severe vWD). On the average, heterozygotes had low levels of vWF in both platelets and plasma. There was, however, considerable heterogeneity, with four distinct patterns. Eleven heterozygotes had concordant reduction of vWF:Ag and Ricof in both plasma and platelets; five had low levels of vWF:Ag and Ricof in plasma contrasting with normal levels in platelets; eight had a peculiar pattern, the reverse of the above (ie, low levels in platelets and normal levels in plasma); and in one, both vWF measurements were normal in plasma and platelets. These patterns were genetically determined: they were consistent in four couples of consanguineous heterozygotes and in two couples carrying the same gene deletion. Only the remaining three heterozygotes had no clearly identifiable pattern. Other findings of this study were that although most of the heterozygotes had normal bleeding times, the 7 of 28 who had prolonged bleeding times had concordantly low levels of vWF measurements in both plasma and platelets. In conclusion, this large series of obligatory heterozygotes provides evidence for phenotypic and genotypic heterogeneity of severe vWD. 相似文献
39.
Does Ultrasound‐Enhanced Instruction of Musculoskeletal Anatomy Improve Physical Examination Skills of First‐Year Medical Students?
下载免费PDF全文
![点击此处可从《Journal of ultrasound in medicine》网站下载免费的PDF全文](/ch/ext_images/free.gif)
40.
Paul T Kr ner Megan ML Engels Benjamin S Glicksberg Kipp W Johnson Obaie Mzaik Jeanin E van Hooft Michael B Wallace Hashem B El-Serag Chayakrit Krittanawong 《World journal of gastroenterology : WJG》2021,27(40):6794-6824
The development of artificial intelligence (AI) has increased dramatically in the last 20 years, with clinical applications progressively being explored for most of the medical specialties. The field of gastroenterology and hepatology, substantially reliant on vast amounts of imaging studies, is not an exception. The clinical applications of AI systems in this field include the identification of premalignant or malignant lesions (e.g., identification of dysplasia or esophageal adenocarcinoma in Barrett’s esophagus, pancreatic malignancies), detection of lesions (e.g., polyp identification and classification, small-bowel bleeding lesion on capsule endoscopy, pancreatic cystic lesions), development of objective scoring systems for risk stratification, predicting disease prognosis or treatment response [e.g., determining survival in patients post-resection of hepatocellular carcinoma), determining which patients with inflammatory bowel disease (IBD) will benefit from biologic therapy], or evaluation of metrics such as bowel preparation score or quality of endoscopic examination. The objective of this comprehensive review is to analyze the available AI-related studies pertaining to the entirety of the gastrointestinal tract, including the upper, middle and lower tracts; IBD; the hepatobiliary system; and the pancreas, discussing the findings and clinical applications, as well as outlining the current limitations and future directions in this field. 相似文献