全文获取类型
收费全文 | 4219篇 |
免费 | 362篇 |
国内免费 | 20篇 |
专业分类
耳鼻咽喉 | 22篇 |
儿科学 | 189篇 |
妇产科学 | 54篇 |
基础医学 | 352篇 |
口腔科学 | 164篇 |
临床医学 | 511篇 |
内科学 | 736篇 |
皮肤病学 | 252篇 |
神经病学 | 300篇 |
特种医学 | 181篇 |
外科学 | 644篇 |
综合类 | 116篇 |
现状与发展 | 20篇 |
一般理论 | 2篇 |
预防医学 | 397篇 |
眼科学 | 290篇 |
药学 | 92篇 |
中国医学 | 2篇 |
肿瘤学 | 277篇 |
出版年
2023年 | 48篇 |
2021年 | 42篇 |
2020年 | 44篇 |
2019年 | 36篇 |
2018年 | 75篇 |
2017年 | 70篇 |
2016年 | 69篇 |
2015年 | 67篇 |
2014年 | 92篇 |
2013年 | 132篇 |
2012年 | 129篇 |
2011年 | 146篇 |
2010年 | 106篇 |
2009年 | 114篇 |
2008年 | 177篇 |
2007年 | 167篇 |
2006年 | 169篇 |
2005年 | 150篇 |
2004年 | 160篇 |
2003年 | 128篇 |
2002年 | 109篇 |
2001年 | 108篇 |
2000年 | 112篇 |
1999年 | 107篇 |
1998年 | 73篇 |
1997年 | 61篇 |
1996年 | 75篇 |
1995年 | 58篇 |
1994年 | 41篇 |
1993年 | 52篇 |
1992年 | 84篇 |
1991年 | 102篇 |
1990年 | 110篇 |
1989年 | 111篇 |
1988年 | 123篇 |
1987年 | 118篇 |
1986年 | 101篇 |
1985年 | 90篇 |
1984年 | 71篇 |
1983年 | 52篇 |
1982年 | 38篇 |
1981年 | 40篇 |
1980年 | 34篇 |
1979年 | 51篇 |
1978年 | 69篇 |
1977年 | 46篇 |
1976年 | 41篇 |
1973年 | 40篇 |
1972年 | 36篇 |
1970年 | 36篇 |
排序方式: 共有4601条查询结果,搜索用时 15 毫秒
21.
The management of self-destructive behavior in eating disorder patients with borderline personality is a genuine therapeutic challenge. We present an integrated psychotherapy appproach that we utilize in the context of an extended therapeutic milieu. This treatment model enables coordinated intervention to occur in three different arenas: individual psychotherapy, group psychotherapy, and consultation intervention. The paper closes with a discussion of the limitations of this approach. 相似文献
22.
23.
J Moisseiev H Lewis E Bartov S L Fine R P Murphy 《American journal of ophthalmology》1990,109(5):604-605
24.
S T Westerman M B Fine L Gilbert 《The Journal of the American Osteopathic Association》1990,90(10):926-928
Aerotitis, an acute inflammation of the middle ear caused by the difference in air pressure between the airplane cabin and the middle-ear space, is becoming more common in the United States as our society becomes increasingly mobile. We describe a case in which a 33-year-old woman with a resolving upper respiratory tract infection and mildly blocked eustachian tubes flew on a business trip. During ascent, her ears became blocked. This blockage was partially alleviated by a Valsalva's maneuver. On descent, however, her ears became severely blocked, she experienced intense pain, and her tympanic membranes ruptured. She became nauseated and vomited. Her hearing became significantly diminished and she experienced vertigo. On landing, she was taken to a local emergency room and treated with penicillin and antivertiginous medication. Subsequent otologic evaluation revealed severe permanent sensorineural hearing loss. The vestibular symptoms lasted several months. She now requires hearing aids on a permanent basis. Suggestions are presented for prevention and treatment of aerotitis. 相似文献
25.
26.
27.
The computerized database system described was initially developed in 1986 to facilitate analysis of retrospective head and neck cancer data from the Royal Adelaide Hospital Department of Otolaryngology. This has now been expanded to become an on-going patient information management system. It is based on the dBase-III-Plus database package and is implemented on an IBM XT compatible computer. The system was designed to be used by staff without specialist computer skills and is therefore largely “menu-driven.” The main functions include patient record creation, update, and retrieval, and the production of reports including graphical presentations. There is also a powerful but easy to use query facility. The system has already provided much useful epidemiological material but is now beginning to fulfill an even more important role in patient follow-up and in assisting evaluation of alternative treatment protocols. 相似文献
28.
Tumor Vascularity Is Not a Prognostic Factor for Malignant Melanoma of the Skin 总被引:1,自引:4,他引:1
下载免费PDF全文
![点击此处可从《The American journal of pathology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Klaus J. Busam Marianne Berwick Karen Blessing Katrin Fandrey Sewon Kang Themis Karaoli Judy Fine Alistair J. Cochran Wain L. White Jason Rivers David E. Elder Duan-Ren Po Wen Bradley H. Heyman Raymond L. Barnhill 《The American journal of pathology》1995,147(4):1049-1056
Tumor vascularity has been proposed as a prognostic indicator for a number of solid tumors. Although a correlation between microvessel number and metastatic behavior has also been suggested for cutaneous melanoma, the small number of cases studied to date allows one to draw only preliminary conclusions. In this study, we have assessed tumor vascularity in cutaneous melanoma by comparing 60 cases of metastasizing and non-metastasizing tumors matched for tumor thickness, age, sex, and anatomic site. Ulex europaeus agglutinin I appeared to be the most suitable vascular marker for this study. Our results indicate that there was no statistically significant difference between the two groups with regard to tumor vascularity. Even after identifying 15 cases of thin (<1.0 mm thick) melanoma, there was no significant difference in the number of microvessels between metastasizing and non-metastasizing tumors. Comparison of patterns of vascular microarchitecture also failed to discriminate between the two groups. Thus, our results indicate that tumor vascularity may not be an independent prognostic factor for cutaneous melanoma. 相似文献
29.
30.