全文获取类型
收费全文 | 19785篇 |
免费 | 1236篇 |
国内免费 | 92篇 |
专业分类
耳鼻咽喉 | 176篇 |
儿科学 | 287篇 |
妇产科学 | 242篇 |
基础医学 | 2694篇 |
口腔科学 | 655篇 |
临床医学 | 1862篇 |
内科学 | 4179篇 |
皮肤病学 | 527篇 |
神经病学 | 2108篇 |
特种医学 | 1259篇 |
外科学 | 3147篇 |
综合类 | 116篇 |
一般理论 | 6篇 |
预防医学 | 1031篇 |
眼科学 | 428篇 |
药学 | 1039篇 |
中国医学 | 52篇 |
肿瘤学 | 1305篇 |
出版年
2024年 | 15篇 |
2023年 | 145篇 |
2022年 | 293篇 |
2021年 | 546篇 |
2020年 | 370篇 |
2019年 | 434篇 |
2018年 | 551篇 |
2017年 | 450篇 |
2016年 | 606篇 |
2015年 | 688篇 |
2014年 | 824篇 |
2013年 | 1037篇 |
2012年 | 1628篇 |
2011年 | 1527篇 |
2010年 | 960篇 |
2009年 | 819篇 |
2008年 | 1354篇 |
2007年 | 1453篇 |
2006年 | 1356篇 |
2005年 | 1258篇 |
2004年 | 1128篇 |
2003年 | 1025篇 |
2002年 | 902篇 |
2001年 | 206篇 |
2000年 | 192篇 |
1999年 | 224篇 |
1998年 | 167篇 |
1997年 | 155篇 |
1996年 | 94篇 |
1995年 | 63篇 |
1994年 | 53篇 |
1993年 | 53篇 |
1992年 | 68篇 |
1991年 | 32篇 |
1990年 | 34篇 |
1989年 | 30篇 |
1988年 | 34篇 |
1987年 | 27篇 |
1986年 | 17篇 |
1985年 | 17篇 |
1984年 | 25篇 |
1983年 | 24篇 |
1982年 | 29篇 |
1981年 | 14篇 |
1980年 | 12篇 |
1979年 | 18篇 |
1977年 | 11篇 |
1975年 | 13篇 |
1974年 | 15篇 |
1973年 | 21篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Troppmair Teresa Egger J. Krösbacher A. Zanvettor A. Schinnerl A. Neumayr A. Baubin M. 《Der Anaesthesist》2022,71(4):272-280
Die Anaesthesiologie - Die Qualität eines Rettungssystems zeichnet sich auch durch den effizienten Einsatz seiner personellen und Fahrzeugressourcen aus. So können im berechtigten Fall... 相似文献
2.
Widder Randolf A. Lappas Alexandra Rennings Corinna Hild Matthias Roessler Gernot F. Dietlein Thomas S. 《Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie》2020,258(11):2581-2581
Graefe's Archive for Clinical and Experimental Ophthalmology - The published online version contains mistake as the author's first name and last name have been interchanged as "Hild... 相似文献
3.
4.
Michael E Egger Joanna M Ohlendorf Charles R Scoggins Kelly M McMasters Robert C G Martin II 《HPB : the official journal of the International Hepato Pancreato Biliary Association》2015,17(9):839-845
BackgroundThe aim of this paper is to assess the current state of quality and outcomes measures being reported for hepatic resections in the recent literature.MethodsMedline and PubMed databases were searched for English language articles published between 1 January 2002 and 30 April 2013. Two examiners reviewed each article and relevant citations for appropriateness of inclusion, which excluded papers of liver donor hepatic resections, repeat hepatectomies or meta-analyses. Data were extracted and summarized by two examiners for analysis.ResultsFifty-five studies were identified with suitable reporting to assess peri-operative mortality in hepatic resections. In only 35% (19/55) of the studies was the follow-up time explicitly stated, and in 47% (26/55) of studies peri-operative mortality was limited to in-hospital or 30 days. The time period in which complications were captured was not explicitly stated in 19 out of 28 studies. The remaining studies only captured complications within 30 days of the index operation (8/28). There was a paucity of quality literature addressing truly patient-centred outcomes.ConclusionQuality outcomes after a hepatic resection are inconsistently reported in the literature. Quality outcome studies for a hepatectomy should report mortality and morbidity at a minimum of 90 days after surgery. 相似文献
5.
6.
7.
8.
The association between family affluence and smoking among 15‐year‐old adolescents in 33 European countries,Israel and Canada: the role of national wealth
下载免费PDF全文
![点击此处可从《Addiction (Abingdon, England)》网站下载免费的PDF全文](/ch/ext_images/free.gif)
9.
Tobias Kisch Julia Maria Klemens Katharina Hofmann Eirini Liodaki Matthias Gierloff Dirk Moellmeier Felix Stang Peter Mailaender Jens Habermann Matthias Brandenburger 《Medicine》2015,94(41)
The regrowth of amputated digit tips represents a unique regenerative healing in mammals with subcutaneous volume regrowth, restoration of dactylogram, and suppression of scar formation. Although factor analysis in amphibians and even in mice is easy to obtain, safety of harvesting biomaterial from human digit tip amputations for analysis has not yet been described.The aim of this study was to evaluate if recovering wound exudate does hamper clinical outcome or influence microbiologic or inflammation status.A predefined cohort of 18 patients with fresh digit tip amputations was randomly assigned to receive standard therapy (debridement, occlusive dressing) with (n = 9) or without (n = 9) collection of the whole wound exudate in every dressing change. Primary endpoint (lengthening) and secondary endpoints (regeneration of dactylogram, nail bed and bone healing, time to complete wound closure, scar formation, 2-point discrimination, microbiologic analysis, inflammatory factors interleukin (IL)-1α, tumor necrosis factor-α, IL-4, and IL-6) were determined by an independent, blinded observer.Patients’ characteristics showed no significant differences between the groups. All patients completed the study to the end of 3 months follow-up. Exudate collection did not influence primary and secondary endpoints. Furthermore, positive microbiologic findings as well as pus- and necrosis-like appearance neither impaired tissue restoration nor influenced inflammatory factor release.Here, the authors developed an easy and safe protocol for harvesting wound exudate from human digit tip amputations. For the first time, it was shown that harvesting does not impair regenerative healing. Using this method, further studies can be conducted to analyze regeneration associated factors in the human digit tip.DRKS.de Identifier: DRKS00006882 (UTN: U1111-1166-5723). 相似文献