全文获取类型
收费全文 | 3321篇 |
免费 | 333篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 57篇 |
儿科学 | 59篇 |
妇产科学 | 68篇 |
基础医学 | 501篇 |
口腔科学 | 65篇 |
临床医学 | 540篇 |
内科学 | 530篇 |
皮肤病学 | 131篇 |
神经病学 | 238篇 |
特种医学 | 76篇 |
外科学 | 621篇 |
综合类 | 103篇 |
一般理论 | 1篇 |
预防医学 | 328篇 |
眼科学 | 22篇 |
药学 | 187篇 |
肿瘤学 | 134篇 |
出版年
2023年 | 27篇 |
2022年 | 21篇 |
2021年 | 41篇 |
2020年 | 23篇 |
2019年 | 46篇 |
2018年 | 56篇 |
2017年 | 55篇 |
2016年 | 57篇 |
2015年 | 29篇 |
2014年 | 68篇 |
2013年 | 106篇 |
2012年 | 192篇 |
2011年 | 177篇 |
2010年 | 104篇 |
2009年 | 105篇 |
2008年 | 180篇 |
2007年 | 166篇 |
2006年 | 157篇 |
2005年 | 168篇 |
2004年 | 152篇 |
2003年 | 168篇 |
2002年 | 136篇 |
2001年 | 107篇 |
2000年 | 112篇 |
1999年 | 110篇 |
1998年 | 41篇 |
1997年 | 28篇 |
1996年 | 41篇 |
1995年 | 27篇 |
1994年 | 24篇 |
1993年 | 33篇 |
1992年 | 96篇 |
1991年 | 68篇 |
1990年 | 73篇 |
1989年 | 53篇 |
1988年 | 62篇 |
1987年 | 53篇 |
1986年 | 57篇 |
1985年 | 47篇 |
1984年 | 43篇 |
1983年 | 38篇 |
1982年 | 25篇 |
1981年 | 30篇 |
1980年 | 17篇 |
1979年 | 39篇 |
1978年 | 22篇 |
1977年 | 23篇 |
1976年 | 17篇 |
1974年 | 19篇 |
1973年 | 18篇 |
排序方式: 共有3661条查询结果,搜索用时 15 毫秒
1.
2.
3.
Movement detection at the human big toe 总被引:1,自引:1,他引:0
4.
5.
Joyce J. Fitzpatrick Sheila Ryan DeWitt Baldwin Roger Bulger Jean Johnson-Pawlson Christopher McLaughlin Maureen Kelley Leopold Selketr Bernardine Lacey Charlene Hanson Robin Harvan Patricia Hinton Walker David Sluyter Mary Joan Ladden Neal Vanselow 《Journal of Midwifery & Women's Health》1998,43(1):61-65
In 1995, the National League for Nursing commissioned a Panel on Interdisciplinary/Transdisciplinary Education. The focus of the Panel's work was to examine educational issues that transcend the health professions and to make recommendations for future implementation of an interdisciplinary approach to addressing them. This article is being simultaneously published by several professional journals. The goal is to seek as much feedback as possible. 相似文献
6.
A case of islet cell tumor occurring in a patient with the multiple endocrine neoplasia type I syndrome is reported. Immunostaining for insulin was strongly positive in the tumor cells. Numerous dense-core granules of endocrine caliber were identified ultrastructurally. Morphometric analysis of the secretory granules in 20 islet cell tumors gave a granule size of 182 +/- 52 nm (mean +/- standard deviation). 相似文献
7.
8.
L R Fitzpatrick J S Bostwick M Renzetti R G Pendleton D L Decktor 《Agents and actions》1990,30(3-4):393-402
The efficacy of various drugs used to treat ulcerative colitis, (sulfasalazine, 5-aminosalicylate, hydrocortisone) was investigated in a model of acetic acid-induced colitis in the rat. Subsequently, we tested the ability of antioxidant/5-lipoxygenase inhibitors (gossypol and nordihydroguiaretic acid [NDGA]) and a cyclooxygenase inhibitor (indomethacin) to attenuate the macroscopic colonic damage and/or neutrophil influx (myeloperoxidase activity [MPO]) associated with this model of colitis. Oral pretreatment with either sulfasalazine, gossypol, or NDGA significantly decreased colonic MPO activity induced by acetic acid. Intrarectal administration of such drugs resulted in an even larger reduction of the colonic inflammation, with gossypol being the most potent compound. Oral or intrarectal administration of corticosteroids (dexamethasone, hydrocortisone) also attenuated the parameters of acetic acid induced colitis. In contrast, pretreatment with indomethacin was ineffective, or when administered daily after colitis induction, indomethacin actually increased colonic neutrophil influx significantly. Our data suggest that both the route of drug administration and dosing regimen employed affect the antiinflammatory potency and/or efficacy of compounds on colitis induced by acetic acid in the rat. Drugs which were effective against this colitis may act by scavenging of oxygen derived free radicals. 相似文献
9.
This paper examines the use of videotape simulation as a research method for the exploration of clinical problem-solving, the challenges posed and the strategies employed to overcome the difficulties encountered are discussed. The simulation forms part of a larger comparative study of outcomes of pre-registration nurse education programmes, commissioned by the English National Board for Nursing, Midwifery and Health Visiting. 相似文献
10.
Jaggi Rao Theodore A Golden Richard E Fitzpatrick 《Dermatologic surgery》2002,28(8):768-71; discussion 771
BACKGROUND: With the popularity of laser skin resurfacing for the correction of photoaging and the improvement of acne scarring, it is important to note complications that may result from this procedure. Infections must be recognized and treated early, as some can result in permanent local destruction and systemic spread to other body sites. OBJECTIVE: To increase the awareness of an unusual infection that may result from laser resurfacing. METHODS: We report the case of a 52-year-old woman who presented with two symmetrical nodules 1 month after full-face skin resurfacing with CO2 laser. These were found to be abscesses caused by Mycobacterium fortuitum infection. RESULTS: The diagnosis was established following surgical debridement and subsequent culture grown from the exudate. Oral antibiotic treatment guided by organism sensitivity resulted in complete clearance of the infection with no recurrence or sequelae after 3 years of follow-up. CONCLUSION: This case demonstrates that atypical mycobacterial infections may arise after laser resurfacing procedures, despite proper technique, sterile instrumentation, and appropriate perioperative medications and postoperative wound care. If diagnosed and treated early, this potentially disastrous complication can be cured with no permanent sequelae. 相似文献