全文获取类型
收费全文 | 976篇 |
免费 | 39篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 42篇 |
妇产科学 | 54篇 |
基础医学 | 106篇 |
临床医学 | 99篇 |
内科学 | 188篇 |
皮肤病学 | 14篇 |
神经病学 | 100篇 |
特种医学 | 47篇 |
外科学 | 165篇 |
综合类 | 11篇 |
预防医学 | 20篇 |
眼科学 | 5篇 |
药学 | 85篇 |
中国医学 | 1篇 |
肿瘤学 | 70篇 |
出版年
2021年 | 11篇 |
2020年 | 6篇 |
2018年 | 10篇 |
2017年 | 8篇 |
2016年 | 20篇 |
2015年 | 20篇 |
2014年 | 7篇 |
2013年 | 25篇 |
2012年 | 32篇 |
2011年 | 32篇 |
2010年 | 29篇 |
2009年 | 21篇 |
2008年 | 47篇 |
2007年 | 55篇 |
2006年 | 45篇 |
2005年 | 38篇 |
2004年 | 26篇 |
2003年 | 25篇 |
2002年 | 34篇 |
2001年 | 25篇 |
2000年 | 28篇 |
1999年 | 21篇 |
1998年 | 8篇 |
1997年 | 9篇 |
1996年 | 12篇 |
1995年 | 9篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 26篇 |
1991年 | 23篇 |
1990年 | 18篇 |
1989年 | 24篇 |
1988年 | 17篇 |
1987年 | 16篇 |
1986年 | 19篇 |
1985年 | 21篇 |
1984年 | 11篇 |
1983年 | 13篇 |
1982年 | 6篇 |
1979年 | 10篇 |
1978年 | 11篇 |
1976年 | 5篇 |
1975年 | 13篇 |
1974年 | 9篇 |
1973年 | 8篇 |
1972年 | 9篇 |
1971年 | 16篇 |
1970年 | 7篇 |
1965年 | 7篇 |
1935年 | 24篇 |
排序方式: 共有1015条查询结果,搜索用时 31 毫秒
1.
Sibylle M. Winter Katja Dittrich Peggy Dörr Judith Overfeld Imke Moebus Elena Murray Gergana Karaboycheva Christian Zimmermann Andrea Knop Manuel Voelkle Sonja Entringer Claudia Buss John-Dylan Haynes Elisabeth B. Binder Christine Heim 《Journal of child psychology and psychiatry, and allied disciplines》2022,63(9):1027-1045
2.
Münch F. Purbojo A. Wenzel F. Kohl M. Dittrich S. Rauh M. Zimmermann R. Kwapil N. 《Der Anaesthesist》2022,71(11):882-892
Die Anaesthesiologie - Die Transfusion von Erythrozytenkonzentraten (EK) ist mit verschiedenen Nebenwirkungen assoziiert, die u. a. durch Lagerungsschäden an Erythrozyten hervorgerufen... 相似文献
3.
In the course of digitalization it is becoming increasingly rare for medical documents to be handwritten. As a result, digitalization has already become an integral part of routine patient care but in contrast to other specialist disciplines, such as radiology or laboratory medicine, orthopedics and trauma surgery are still at the beginning of new technologies. Artificial intelligence is not only used in the form of surgical robots in joint surgery or in the design of individualized implants but also provides valuable decision-making aids through appropriate algorithms for diagnosis and treatment. It can be assumed that these technologies will be further developed and used increasingly more in the coming years. Typical examples are intuitively operable and autonomously working programs and systems that support the networking and work of medical personnel and make processes inside and outside inpatient care more precise and less vulnerable to disturbances. 相似文献
4.
Samuel T. Montgomery A. Susanne Dittrich Luke W. Garratt Lidija Turkovic Dario L. Frey Stephen M. Stick Marcus A. Mall Anthony Kicic 《Journal of cystic fibrosis》2018,17(6):715-722
Background
Little is known about the role of interleukin (IL)-1 in the pathogenesis of cystic fibrosis (CF) lung disease. This study investigated the relationship between IL-1 signalling, neutrophilic inflammation and structural lung changes in children with CF.Methods
Bronchoalveolar lavage fluid (BALf) from 102 children with CF were used to determine IL-1α, IL-1β, IL-8 levels and neutrophil elastase (NE) activity, which were then correlated to structural lung changes observed on chest computed tomography (CT) scans.Results
IL-1α and IL-1β were detectable in BAL in absence of infection, increased in the presence of bacterial infection and correlated with IL-8 (p?<?0.0001), neutrophils (p?<?0.0001) and NE activity (p?<?0.01 and p?<?0.001). IL-1α had the strongest association with structural lung disease (p <?0.01) in the absence of infection (uninfected: p?<?0.01 vs. infected: p?=?0.122).Conclusion
Our data associates IL-1α with early structural lung damage in CF and suggests this pathway as a novel anti-inflammatory target. 相似文献5.
Sébastien Boutin Michael Weitnauer Selina Hassel Simon Y. Graeber Mirjam Stahl A. Susanne Dittrich Marcus A. Mall Alexander H. Dalpke 《Journal of cystic fibrosis》2018,17(3):348-355
Background
Chronic airway infection with Pseudomonas aeruginosa is a major risk factor of progression of lung disease in patients with cystic fibrosis (CF). Chronic P. aeruginosa infection evolves from intermittent infection that is amenable to antibiotic eradication, whereas chronically adapted P. aeruginosa becomes resistant to antibiotic therapy. Discrimination of intermittent versus chronic infection is therefore of high therapeutic relevance, yet the available diagnostic methods are only partly satisfactory. The aim of the present study was, therefore, to evaluate the usage of quantitative PCR (qPCR) to measure pathogen abundance and to discriminate between intermittent and chronic Pseudomonas infection in patients with CF.Method
Using an established qPCR protocol, we analyzed the abundance of P. aeruginosa in 141 throats swabs and 238 sputa from CF patients with intermittent or chronic infection with P. aeruginosa, as determined by standard culture based diagnostics.Results
We observed a large increase of abundance of P. aeruginosa in throat swabs and sputum samples from patients with chronic compared to intermittent infections with P. aeruginosa. The data show that abundance of P. aeruginosa as measured by qPCR is a valuable tool to discriminate intermittent from chronic infection. Of note, P. aeruginosa burden seems more sensitive than mucoidity phenotype to discriminate chronic from intermittent strains. Furthermore we observed that molecular detection in throat swabs was linked to a viable culture in the sputum when sputum was available. This result is of special interest in young patients with cystic fibrosis that often cannot expectorate sputum. We also observed that qPCR in comparison to culture detected the infection earlier.Conclusion
The results suggest that qPCR detection and quantification of P. aeruginosa is a precious tool to be added to the diagnostic toolbox in cystic fibrosis. 相似文献6.
Christian Schoch Leander Ambros Michael Geyer Johannes E. Plath Michael Dittrich 《Seminars in Arthroplasty》2022,32(2):382-388
BackgroundSince the introduction of stemless anatomic total shoulder arthroplasty (TSA), many studies have been published on this specific group of TSA implants. The following study aimed to evaluate clinical and radiological short- to mid-term outcomes of the LIMA SMR stemless anatomical implant.MethodsWe prospectively evaluated the outcome of 53 TSAs in 52 patients, with a mean age of 58.45 years (range 47-78 years) at the time of implantation with a minimum follow-up of 2 years (range 24-47 months). All patients were physically and radiologically examined; the results were documented by the Constant-Murley Score and the Simple Shoulder Value.ResultsSignificant improvements from preoperative to latest follow-up were documented in Constant-Murley Score (29.0-75.84 pts; P < .001), active range of motion (abduction 84.7°-133.2°, flexion 95.3°-146.4°, and external rotation 12.7°-32.4°). The mean Simple Shoulder Value was 82.15% at the last follow-up. There was no complete loosening of the humeral component, but a lowering of bone mineral density (radiolucencies, RLL) was observed in anteroposterior or axially views—radiographs at the humeral component in 10.2% of the cases, most of them on the anteroposterior view at the calcar region. There was no statistical difference in the outcome of the patients with RLL compared with the ones without radiolucencies. Major complications or revisions did not occur.ConclusionThis study provides comparable improvement in functional, radiographic, and subjective mid-term results with other stemless anatomic implants. 相似文献
7.
8.
Falk Dittrich Andries ter Maat Rene F. Jansen Anton Pieneman Moritz Hertel Carolina Frankl‐Vilches Manfred Gahr 《The European journal of neuroscience》2013,38(9):3338-3344
During song learning, vocal patterns are matched to an auditory memory acquired from a tutor, a process involving sensorimotor feedback. Song sensorimotor learning and song production of birds is controlled by a set of interconnected brain nuclei, the song control system. In male zebra finches, the beginning of the sensorimotor phase of song learning parallels an increase of the brain‐derived neurotrophic factor (BDNF) in just one part of the song control system, the forebrain nucleus HVC. We report here that transient BDNF‐mRNA upregulation in the HVC results in a maximized copying of song syllables. Each treated bird shows motor learning to an extent similar to that of the selected best learners among untreated zebra finches. Because this result was not found following BDNF overexpression in the target areas of HVC within the song system, HVC‐anchored mechanisms are limiting sensorimotor vocal learning. 相似文献
9.
10.