首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   8347篇
  免费   54篇
  国内免费   6篇
耳鼻咽喉   79篇
儿科学   330篇
妇产科学   170篇
基础医学   713篇
口腔科学   49篇
临床医学   572篇
内科学   1649篇
皮肤病学   175篇
神经病学   1374篇
特种医学   200篇
外国民族医学   1篇
外科学   1711篇
综合类   12篇
预防医学   376篇
眼科学   123篇
药学   254篇
中国医学   8篇
肿瘤学   611篇
  2023年   297篇
  2022年   542篇
  2021年   417篇
  2020年   541篇
  2019年   449篇
  2018年   409篇
  2017年   242篇
  2016年   229篇
  2015年   290篇
  2014年   586篇
  2013年   468篇
  2012年   412篇
  2011年   300篇
  2010年   380篇
  2009年   333篇
  2008年   199篇
  2007年   328篇
  2006年   268篇
  2005年   249篇
  2004年   150篇
  2003年   133篇
  2002年   161篇
  2001年   161篇
  2000年   102篇
  1999年   116篇
  1998年   80篇
  1997年   61篇
  1996年   72篇
  1995年   50篇
  1994年   38篇
  1993年   34篇
  1992年   27篇
  1991年   27篇
  1990年   14篇
  1989年   23篇
  1988年   21篇
  1987年   18篇
  1986年   11篇
  1985年   24篇
  1984年   19篇
  1983年   18篇
  1982年   20篇
  1981年   23篇
  1980年   14篇
  1979年   14篇
  1978年   12篇
  1977年   8篇
  1975年   3篇
  1974年   7篇
  1973年   3篇
排序方式: 共有8407条查询结果,搜索用时 15 毫秒
31.
A survey of mycology laboratories for antifungal susceptibility testing (AFST) was undertaken in France in 2018, to better understand the difference in practices between the participating centers and to identify the difficulties they may encounter as well as eventual gaps with published standards and guidelines. The survey captured information from 45 mycology laboratories in France on how they perform AFST (number of strains tested, preferred method, technical and quality aspects, interpretation of the MIC values, reading and interpretation difficulties). Results indicated that 86% of respondents used Etest as AFST method, with a combination of one to seven antifungal agents tested. Most of the participating laboratories used similar technical parameters to perform their AFST method and a large majority used, as recommended, internal and external quality assessments. Almost all the participating mycology laboratories (98%) reported difficulties to interpret the MIC values, especially when no clinical breakpoints are available. The survey highlighted that the current AFST practices in France need homogenization, particularly for MIC reading and interpretation.  相似文献   
32.
33.
《Revue neurologique》2021,177(8):859-870
The development of neurology as an independent discipline in the mid-19th century was considerably influenced by the almost simultaneous foundation of the Charcot School at the Salpêtrière Hospital in Paris and the National Hospital for the Paralysed and Epileptic and it's School at Queen Square in London in the 1860's. We have reviewed the early interactions between Charcot's school and the leading neurologists at the National Hospital and also discussed their neurological antecedents and subsequent links up to the outbreak of World War 1 in 1914. Earlier interactions involved Trousseau and Duchenne in France and Graves, Todd, Laycock and Allbutt in Britain. The French Brown–Séquard was one of the first two physicians appointed to the National Hospital. Charcot was a frequent visitor to Britain culminating in his influential role in the 1881 International Medical Congress in London. He first suggested the terms “Parkinson's Disease” and “Jacksonian Epilepsy”. He attracted numerous British visitors to Paris and his studies of hysteria were influenced by Laycock, Todd and Russell Reynolds. Hughlings Jackson drew upon the anatomical studies of Gratiolet in his interactions with Broca and Charcot which influenced French views on aphasia, epilepsy and cortical localisation. Ball, an Englishman, was the first Professor of mental and brain diseases in Paris in 1877. Bruce in Edinburgh and Kinnier Wilson in London both maintained frequent contacts with Paris, where the latter first presented his studies of hepatolenticular degeneration in 1912. The Entente Cordiale of 1904 led to further interactions with the leading role of the French and British physicians Raymond and Duckworth. Two outstanding British women, Elizabeth Garrett and Blanche Edwards, qualified in Medicine in Paris with neurological interests. Our review emphasises the constructive influence of the French and British Schools on each other and thus on the development of neurology. The French influence was primarily the establishment of the anatomo-clinical method and the use of photographic illustrations in publications. The British School influence was its Clinical Assessment Skills and scientific studies of newly recognised diseases and concepts and its early development of neurosurgery.  相似文献   
34.
35.
《Revue neurologique》2022,178(8):812-816
IntroductionAs an immune-mediated disease of the central nervous system, multifaceted aspects of a humoral immune response are widely described during multiple sclerosis (MS). However, the prevalence of different auto-antibodies, such as antinuclear antibodies (ANA), during MS is very variable and their clinical relevance remains controversial. Our aim was to evaluate the prevalence and clinical correlations of ANA positivity in South Tunisian MS patients.Material and methodsWe performed ANA screening using indirect immunofluorescence (IIF) on HEp-2 cells (Biosystems®) in 82 MS patients. For ANA positive samples (titer ≥1/160), anti-ds-DNA detection (IIF on Crithidia luciliae (Biosystems®)) and extractable nuclear antigen typing (immunodot (Euroimmun®)) were performed.ResultsANA were positive in 35/82 MS patients (42.7%). The titer was ≥ 1/320 in 16/35 patients. The antigenic specificity of ANA was identified in 7/35 patients. None of the patients had extra-neurological manifestations. No correlation was found between ANA and age, gender, MS course, disease duration, disability, annual relapse rate nor IgG index. ANA positivity was more frequent in patients with IgG oligoclonal bands (OCB) (47.1%) than in patients without IgG OCB (16,6%) (p = 0.049). Regarding disease activity, ANA positivity was significantly more frequent in patients with relapse (52.6%) than in patients in remission (25.9%) (p = 0.031).ConclusionOur results showed that ANA positivity in MS disease is not rare. This positivity was not associated with clinical expression of any connective tissue disease. ANA occurrence in MS was associated with IgG OCB+ profile and relapsing status, probably reflecting an ongoing immune dysregulation.  相似文献   
36.
37.
《Cancer cell》2020,37(1):123-134.e5
  1. Download : Download high-res image (200KB)
  2. Download : Download full-size image
  相似文献   
38.
39.
《Revue neurologique》2022,178(8):817-825
Current screening batteries for assessing neuropsychological function are not specific for Amyotrophic Lateral Sclerosis (ALS) and are considered as limited tools due to the physical disabilities associated with ALS. The Edinburgh Cognitive and Behavioural ALS screen (ECAS) was developed to detect the specific cognitive and behavioral changes that may occur among ALS patients. This study presents the ECAS developed for Arabic-speaking ALS patients (ECAS-AR) for use by healthcare professionals. ECAS was translated and modified to refined variety of Arabic language. Eighty-five ALS patients were included. Normative data were collected from 200 healthy controls (among them 97 were matched). Subjects were administered the ECAS-AR and two conventional cognitive screening batteries, Frontal Assessment Battery (FAB) and Mini-Mental State Examination (MMSE). ECAS-AR discriminated well between healthy controls and ALS patients. Significant differences were noted in language, executive functions, memory, and visuospatial domains between the two groups. The most prevalent deficit occurred in language and executive functions in ALS-specific functions. Whereas memory was more readily impaired in the lower and middle education groups concerning ALS non-specific functions. Verbal fluency tended to be preserved. Positive correlations were found between ECAS-AR and the standard cognitive tests supporting its full validity. The ECAS-AR version proposed will provide rapid, efficient and sensitive tools for healthcare professional to determine the cognitive-behavioural profile in Arabic-speaking ALS patients.  相似文献   
40.
《Science & Sports》2006,21(2):104-106
IntroductionThe aim of this study was to evaluate the effects of multidisciplinary physical activity program on rating of perceived exertion exercise in children according to their body mass index.MethodFifty-six children (28 obese vs 28 non-obese) took part in this study and they participated 2 sessions of one hour of multidisciplinary physical activity program per week during 11 weeks. Body composition and physical fitness (aerobic and anaerobic) were performed, and rating of perceived exertion was estimated.ResultsThe intervention has a significant improvement of anthropometric parameters, anaerobic and aerobic performances, and the scores of rating of perceived exertion.ConclusionThese findings suggested that body mass index profile must be taking into account during intervention program of obesity prevention, in order to promote the physical activity in obese children.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号