全文获取类型
收费全文 | 19236篇 |
免费 | 1208篇 |
国内免费 | 90篇 |
专业分类
耳鼻咽喉 | 181篇 |
儿科学 | 264篇 |
妇产科学 | 210篇 |
基础医学 | 2666篇 |
口腔科学 | 668篇 |
临床医学 | 1842篇 |
内科学 | 4000篇 |
皮肤病学 | 525篇 |
神经病学 | 2055篇 |
特种医学 | 1247篇 |
外科学 | 3100篇 |
综合类 | 98篇 |
一般理论 | 6篇 |
预防医学 | 951篇 |
眼科学 | 378篇 |
药学 | 1018篇 |
中国医学 | 54篇 |
肿瘤学 | 1271篇 |
出版年
2024年 | 12篇 |
2023年 | 131篇 |
2022年 | 128篇 |
2021年 | 542篇 |
2020年 | 358篇 |
2019年 | 435篇 |
2018年 | 550篇 |
2017年 | 458篇 |
2016年 | 599篇 |
2015年 | 676篇 |
2014年 | 820篇 |
2013年 | 1038篇 |
2012年 | 1617篇 |
2011年 | 1536篇 |
2010年 | 943篇 |
2009年 | 828篇 |
2008年 | 1369篇 |
2007年 | 1454篇 |
2006年 | 1346篇 |
2005年 | 1271篇 |
2004年 | 1134篇 |
2003年 | 1028篇 |
2002年 | 916篇 |
2001年 | 174篇 |
2000年 | 116篇 |
1999年 | 173篇 |
1998年 | 162篇 |
1997年 | 140篇 |
1996年 | 88篇 |
1995年 | 56篇 |
1994年 | 47篇 |
1993年 | 52篇 |
1992年 | 45篇 |
1991年 | 24篇 |
1990年 | 23篇 |
1989年 | 24篇 |
1988年 | 26篇 |
1987年 | 15篇 |
1986年 | 8篇 |
1985年 | 8篇 |
1984年 | 13篇 |
1983年 | 7篇 |
1982年 | 17篇 |
1981年 | 8篇 |
1980年 | 13篇 |
1977年 | 7篇 |
1976年 | 7篇 |
1974年 | 9篇 |
1973年 | 13篇 |
1970年 | 6篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
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
2.
3.
4.
5.
6.
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
7.
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
8.
Studying skin barrier function is central to our understanding of many skin disorders. The past decade has seen a surge of skin barrier related investigative work. Genetic, biochemical and cell biology experiments have added much evidence to the importance of the barrier in disease pathogenesis of a variety of disorders including ichthyosis, atopic dermatitis and psoriasis. However, functional assays prove ever more important to demonstrate relevance of any of these findings. A paper published by Monash and Blank 60 years ago describes a stress test of the skin barrier, measuring skin barrier recovery, a functional test of tremendous implications. This seminal paper has not been cited for almost 15 years, time to acknowledge its critical importance and to review the relevance of this method today. 相似文献
9.
10.
Subdental synchondrosis and anatomy of the axis in aging: a histomorphometric study on 30 autopsy cases 总被引:4,自引:4,他引:0
Matthias Gebauer Christian Lohse Florian Barvencik Pia Pogoda Johannes M. Rueger Klaus Püschel Michael Amling 《European spine journal》2006,15(3):292-298
During skeletal development the two ossification centers of the odontoid process are separated from the corpus of the axis by a subdental synchondrosis. This synchondrosis is thought to close and disappear spontaneously in adolescence although this has never been studied in detail. The basis of the dens is of clinical relevance as type II dens fractures are located here. To characterize the morphological architecture of the axis with particular attention to the subdental synchondrosis, the complete axis was harvested from thirty age-matched and gender-matched patients of the three different age groups at autopsy. The subdental synchondrosis and the bone structure of the dens, the basis of the dens and the body of C2 were analyzed by radiography, histology and quantitative histomorphometry. At the macroscopic level the persistency of the subdental synchondrosis in the adult cervical spine was detected in 87% (26 of 30) of the specimens. Histomorphometry revealed a residual disc blastema with an average size of 25.8% of the sagittal depth of the basis of the dens at this level. Bony integration of the synchondrosis was poor throughout all ages. Histologically a cartilaginous matrix composition of the subdental synchondrosis persisted throughout all groups. The trabecular microarchitecture demonstrated a significant reduction of bone volume and trabecular number as well as an increased trabecular separation within the basis of the dens as compared to the corpus or the dens of C2. This histomorphometric data regarding a poor integration of the synchondrosis into the trabecular network and the reduced bone mass within the basis of the dens might offer a previously underestimated explanation for the occurrence of type II dens fractures and their association with pseudoarthrosis, respectively.Matthias Gebauer and Christian Lohse contributed equally to this study and therefore share first authorship. 相似文献