全文获取类型
收费全文 | 3211756篇 |
免费 | 233174篇 |
国内免费 | 7148篇 |
专业分类
耳鼻咽喉 | 43856篇 |
儿科学 | 104529篇 |
妇产科学 | 86988篇 |
基础医学 | 470306篇 |
口腔科学 | 89539篇 |
临床医学 | 299626篇 |
内科学 | 614542篇 |
皮肤病学 | 68746篇 |
神经病学 | 258453篇 |
特种医学 | 118472篇 |
外国民族医学 | 810篇 |
外科学 | 470901篇 |
综合类 | 69781篇 |
现状与发展 | 13篇 |
一般理论 | 1227篇 |
预防医学 | 261812篇 |
眼科学 | 74225篇 |
药学 | 238414篇 |
16篇 | |
中国医学 | 6829篇 |
肿瘤学 | 172993篇 |
出版年
2021年 | 25853篇 |
2019年 | 26746篇 |
2018年 | 37072篇 |
2017年 | 27963篇 |
2016年 | 30957篇 |
2015年 | 35122篇 |
2014年 | 49177篇 |
2013年 | 75051篇 |
2012年 | 102945篇 |
2011年 | 109661篇 |
2010年 | 64853篇 |
2009年 | 60643篇 |
2008年 | 102070篇 |
2007年 | 108552篇 |
2006年 | 109406篇 |
2005年 | 105937篇 |
2004年 | 101153篇 |
2003年 | 97023篇 |
2002年 | 93804篇 |
2001年 | 142511篇 |
2000年 | 146479篇 |
1999年 | 123317篇 |
1998年 | 36592篇 |
1997年 | 32185篇 |
1996年 | 32191篇 |
1995年 | 30452篇 |
1994年 | 28272篇 |
1993年 | 26593篇 |
1992年 | 96824篇 |
1991年 | 94984篇 |
1990年 | 92428篇 |
1989年 | 88618篇 |
1988年 | 81794篇 |
1987年 | 80216篇 |
1986年 | 75750篇 |
1985年 | 72622篇 |
1984年 | 54268篇 |
1983年 | 46387篇 |
1982年 | 27780篇 |
1979年 | 50037篇 |
1978年 | 35750篇 |
1977年 | 29614篇 |
1976年 | 28592篇 |
1975年 | 30281篇 |
1974年 | 36555篇 |
1973年 | 35242篇 |
1972年 | 32879篇 |
1971年 | 30999篇 |
1970年 | 28711篇 |
1969年 | 26925篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
993.
994.
A Cichowitz P A Stanley W A Morrison 《Journal of plastic, reconstructive & aesthetic surgery》2007,60(5):490-494
Impaired lymph drainage is an inevitable consequence of any form of surgery that disrupts lymphatics, resulting in a degree of lymphoedema that may vary from subtle to dramatic and although classically involving an entire limb, may be more localised, confined to only a small area such as a skin flap. Infection is a well-recognised complication of lymphoedema. However, not all inflammatory episodes occurring in the setting of lymphatic dysfunction can be clearly attributed to infection as this article demonstrates. Five patients presented over a 5-year period with distinctive erysipelas-like inflammation affecting the breast which occurred several weeks following reduction mammaplasty in four patients and breast reconstruction in one patient. No clinical response was obtained with standard antibiotics. This inflammatory problem may represent a previously unreported complication of breast surgery with an incidence of 4% following reduction mammaplasty. Recent research supports the notion that this type of episode is most likely to be due to a non-infective inflammatory process related to lymphatic dysfunction induced by surgery. 相似文献
995.
PURPOSE: The beneficial role of elective neck dissection (END) in the management of high-risk cutaneous squamous cell carcinoma (CSCC) of the head and neck remains unproven. Some surgical specialists suggest that END may be beneficial for patients with clinically node-negative (N0) high-risk CSCC, but there are few data to support this claim. We reviewed the available literature regarding the use of END in the management of both CSCC and head and neck SCC (HNSCC). METHODOLOGY: The available medical literature pertaining to END in both CSCC and HNSCC was reviewed using PubMed and Ovid Medline searches. RESULTS: Many surgical specialists recommend that END be routinely performed in patients with N0 HNSCC when the risk of occult metastases is estimated to exceed 20%; however, patients who undergo END have no proven survival benefit over those who are initially staged as N0 and undergo therapeutic neck dissection (TND) after the development of apparent regional disease. There is a lack of data regarding the proper management of regional nodal basins in patients with N0 CSCC. In the absence of evidence-based data, the cutaneous surgeon must rely on clinical judgment to guide the management of patients with N0 high-risk CSCC of the head and neck. CONCLUSIONS: Appropriate work-up for occult nodal disease may occasionally be warranted in patients with high-risk CSCC. END may play a role in only a very limited number of patients with high-risk CSCC. 相似文献
996.
997.
998.
999.
1000.
A new approach to the activation of reactants during the condensation of aromatic aldehydes with N-aroylglycines (acting as
CH-acids) is described. The condensation reaction carried out on heating in phosphorus oxychloride leads to a high yield of
4-benzylideneoxazol-5-one derivatives. The hydrolysis of these intermediate products yields the target α-benzoylaminocinnamic
acids.
__________
Translated from Khimiko-Farmatsevticheskii Zhurnal, Vol. 39, No. 7, pp. 41 – 42, July, 2005. 相似文献