全文获取类型
收费全文 | 370篇 |
免费 | 29篇 |
国内免费 | 3篇 |
专业分类
儿科学 | 9篇 |
妇产科学 | 4篇 |
基础医学 | 60篇 |
临床医学 | 32篇 |
内科学 | 99篇 |
皮肤病学 | 2篇 |
神经病学 | 61篇 |
特种医学 | 13篇 |
外科学 | 42篇 |
综合类 | 5篇 |
预防医学 | 37篇 |
眼科学 | 2篇 |
药学 | 11篇 |
中国医学 | 1篇 |
肿瘤学 | 24篇 |
出版年
2023年 | 6篇 |
2022年 | 19篇 |
2021年 | 27篇 |
2020年 | 9篇 |
2019年 | 16篇 |
2018年 | 19篇 |
2017年 | 7篇 |
2016年 | 12篇 |
2015年 | 13篇 |
2014年 | 16篇 |
2013年 | 20篇 |
2012年 | 25篇 |
2011年 | 47篇 |
2010年 | 14篇 |
2009年 | 23篇 |
2008年 | 25篇 |
2007年 | 19篇 |
2006年 | 21篇 |
2005年 | 19篇 |
2004年 | 8篇 |
2003年 | 12篇 |
2002年 | 9篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1989年 | 2篇 |
1987年 | 2篇 |
1964年 | 1篇 |
1938年 | 1篇 |
1932年 | 1篇 |
排序方式: 共有402条查询结果,搜索用时 0 毫秒
1.
Studies of functional plasticity after pre- or perinatal brain damage can tell us whether the neural substrate normally involved in the development of a given ability is specific and, if so, when it becomes functionally specified and unique. Development of face processing was investigated in 5- to 17-year-old children who had a unilateral brain injury in the pre-, peri-, or postnatal period. In Studies 1 and 2, patients with a posterior injury involving the temporal regions exhibited a face-processing deficit that was independent of their age at test time. Even though differences were observed between the two hemispheres in face processing during infancy as well as in adults in cases of normal development, no clear differences between right and left injury were observed here in face-processing deficit. Poor postlesional face-processing plasticity seems to contrast with results of several studies on speech development after early unilateral injury. If the difference in the time window for postlesional plasticity between these two areas of competency is confirmed, it would suggest that the two kinds of abilities rely on neural cells which are sensitive to different plasticity factors. 相似文献
2.
A panel of 120 HLA-A, -B, -C and -DR typed Austrians has been typed for HLA-D by the use of 26 Homozygous Typing Cells (HTC). The new Austrian HTC, partly defined by the 9th International Histocompatibility Workshop (9WS), partly by a checkerboard experiment with internationally well defined reference HTC, type for HLA-Dw1 to -Dw7 and an obviously new, so far unknown HLA-DR2 related HLA-D determinant. Associations of HLA-DR and HLA-D antigens in Austria and their frequencies are determined. Antigen frequencies in Austria are compared to frequencies in other Caucasoid populations. 相似文献
3.
4.
Nina Kurucz Jamie Lee McMahon Allan Warchot Glen Hewitson Jean Barcelon Frederick Moore Jasmin Moran Jessica J. Harrison Agathe M. G. Colmant Kyran M. Staunton Scott A. Ritchie Michael Townsend Dagmar Meyer Steiger Roy A. Hall Sally R. Isberg Sonja Hall-Mendelin 《Viruses》2022,14(6)
The Kunjin strain of West Nile virus (WNVKUN) is a mosquito-transmitted flavivirus that can infect farmed saltwater crocodiles in Australia and cause skin lesions that devalue the hides of harvested animals. We implemented a surveillance system using honey-baited nucleic acid preservation cards to monitor WNVKUN and another endemic flavivirus pathogen, Murray Valley encephalitis virus (MVEV), on crocodile farms in northern Australia. The traps were set between February 2018 and July 2020 on three crocodile farms in Darwin (Northern Territory) and one in Cairns (North Queensland) at fortnightly intervals with reduced trapping during the winter months. WNVKUN RNA was detected on all three crocodile farms near Darwin, predominantly between March and May of each year. Two of the NT crocodile farms also yielded the detection of MVE viral RNA sporadically spread between April and November in 2018 and 2020. In contrast, no viral RNA was detected on crocodile farms in Cairns during the entire trapping period. The detection of WNVKUN and MVEV transmission by FTATM cards on farms in the Northern Territory generally correlated with the detection of their transmission to sentinel chicken flocks in nearby localities around Darwin as part of a separate public health surveillance program. While no isolates of WNVKUN or MVEV were obtained from mosquitoes collected on Darwin crocodile farms immediately following the FTATM card detections, we did isolate another flavivirus, Kokobera virus (KOKV), from Culex annulirostris mosquitoes. Our studies support the use of the FTATM card system as a sensitive and accurate method to monitor the transmission of WNVKUN and other arboviruses on crocodile farms to enable the timely implementation of mosquito control measures. Our detection of MVEV transmission and isolation of KOKV from mosquitoes also warrants further investigation of their potential role in causing diseases in crocodiles and highlights a “One Health” issue concerning arbovirus transmission to crocodile farm workers. In this context, the introduction of FTATM cards onto crocodile farms appears to provide an additional surveillance tool to detect arbovirus transmission in the Darwin region, allowing for a more timely intervention of vector control by relevant authorities. 相似文献
5.
6.
Biallelic AOPEP Loss-of-Function Variants Cause Progressive Dystonia with Prominent Limb Involvement
Michael Zech MD Kishore R. Kumar MBBS PhD FRACP Sophie Reining MD Janine Reunert PhD Michel Tchan MBBS PhD FRACP Lisa G. Riley PhD Alexander P. Drew PhD Robert J. Adam MA MBBS PhD FRACP FRCP Riccardo Berutti PhD Saskia Biskup MD Nicolas Derive PhD Somayeh Bakhtiari PhD Sheng Chih Jin PhD Michael C. Kruer MD Tanya Bardakjian MS Pedro Gonzalez-Alegre MD PhD Ignacio J. Keller Sarmiento MD Niccolo E. Mencacci MD PhD Steven J. Lubbe PhD Manju A. Kurian PhD Fabienne Clot PhD Aurélie Méneret MD PhD Jean-Madeleine de Sainte Agathe MD Victor S.C. Fung MBBS PhD FRACP Marie Vidailhet MD Matthias Baumann MD Thorsten Marquardt MD Juliane Winkelmann MD Sylvia Boesch MD 《Movement disorders》2022,37(1):137-147
7.
8.
Agathe M.G. Colmant Jody Hobson-Peters Teun A.P. Slijkerman Jessica J. Harrison Gorben P. Pijlman Monique M. van Oers Peter Simmonds Roy A. Hall Jelke J. Fros 《Viruses》2021,13(4)
The genus Flavivirus contains pathogenic vertebrate-infecting flaviviruses (VIFs) and insect-specific flaviviruses (ISF). ISF transmission to vertebrates is inhibited at multiple stages of the cellular infection cycle, via yet to be elucidated specific antiviral responses. The zinc-finger antiviral protein (ZAP) in vertebrate cells can bind CpG dinucleotides in viral RNA, limiting virus replication. Interestingly, the genomes of ISFs contain more CpG dinucleotides compared to VIFs. In this study, we investigated whether ZAP prevents two recently discovered lineage II ISFs, Binjari (BinJV) and Hidden Valley viruses (HVV) from replicating in vertebrate cells. BinJV protein and dsRNA replication intermediates were readily observed in human ZAP knockout cells when cultured at 34 °C. In ZAP-expressing cells, inhibition of the interferon response via interferon response factors 3/7 did not improve BinJV protein expression, whereas treatment with kinase inhibitor C16, known to reduce ZAP’s antiviral function, did. Importantly, at 34 °C, both BinJV and HVV successfully completed the infection cycle in human ZAP knockout cells evident from infectious progeny virus in the cell culture supernatant. Therefore, we identify vertebrate ZAP as an important barrier that protects vertebrate cells from ISF infection. This provides new insights into flavivirus evolution and the mechanisms associated with host switching. 相似文献
9.
Siproudhis L Eléouet M Rousselle A El Alaoui M Ropert A Bretagne JF 《Diseases of the colon and rectum》2008,51(9):1356-1360
PURPOSE Rectal prolapse is frequently associated with fecal incontinence; however, the relationship is questionable. The study was
designed to evaluate fecal incontinence in a large consecutive series of patients who suffered from rectal prolapse, focusing
on both past history, anal physiology, and imaging.
METHODS Eighty-eight consecutive patients who suffered from an overt rectal prolapse (72 women, 16 men; mean age, 51.1 ± 19.5 years)
as a main symptom were analyzed; 48 patients also experienced fecal incontinence compared with 40 without incontinence. Logistic
regression analyses were performed.
RESULTS The two groups of patients did not differ with respect to parity, weekly stool frequency, main duration of symptoms before
referral, occurrence of dyschezia, and digital help to defecate. Patients with prolapse who were older than 45 years (odds
ratio (OR), 4.51 (1.49–13.62); P = 0.007) and those with a past history of hemorrhoidectomy (OR, 9.05 (1.68–48.8); P = 0.01) were significantly more incontinent. Incontinent group showed frequent internal anal sphincter defect compared with
the continent group (60 vs. 6.2 percent; P = 0.0018).
CONCLUSIONS In patients with overt rectal prolapse, the occurrence of fecal incontinence needs special consideration for age and previous
hemorrhoid surgery as causative factors. Anal weakness and sphincter defects are frequently observed. 相似文献