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   6120篇
  免费   403篇
  国内免费   37篇
耳鼻咽喉   63篇
儿科学   93篇
妇产科学   150篇
基础医学   794篇
口腔科学   61篇
临床医学   679篇
内科学   1453篇
皮肤病学   76篇
神经病学   534篇
特种医学   230篇
外科学   998篇
综合类   39篇
预防医学   332篇
眼科学   113篇
药学   387篇
中国医学   5篇
肿瘤学   553篇
  2024年   10篇
  2023年   61篇
  2022年   103篇
  2021年   235篇
  2020年   162篇
  2019年   219篇
  2018年   262篇
  2017年   170篇
  2016年   181篇
  2015年   160篇
  2014年   251篇
  2013年   327篇
  2012年   490篇
  2011年   405篇
  2010年   248篇
  2009年   236篇
  2008年   365篇
  2007年   368篇
  2006年   364篇
  2005年   339篇
  2004年   283篇
  2003年   261篇
  2002年   259篇
  2001年   80篇
  2000年   64篇
  1999年   57篇
  1998年   59篇
  1997年   49篇
  1996年   48篇
  1995年   41篇
  1994年   27篇
  1993年   15篇
  1992年   29篇
  1991年   30篇
  1990年   28篇
  1989年   29篇
  1988年   24篇
  1987年   21篇
  1986年   21篇
  1985年   17篇
  1984年   11篇
  1983年   9篇
  1982年   7篇
  1981年   10篇
  1976年   10篇
  1974年   7篇
  1973年   7篇
  1972年   12篇
  1970年   11篇
  1969年   9篇
排序方式: 共有6560条查询结果,搜索用时 0 毫秒
71.
72.
73.
Clinical Rheumatology - IgA vasculitis (IgAV) frequently occurs during or after a mucosal infection; it also rarely occurs in patients with cancer. We hypothesized that cancer could impact the...  相似文献   
74.
This study presents the results of a multicenter investigation of the efficacy of acamprosate in the treatment of patients with chronic or episodic alcohol dependence. One hundred eighteen patients were randomly assigned to either placebo or acamprosate, and both groups were stratified for concomitant voluntary use of disulfiram. Treatment lasted for 380 days, with an additional 360-day follow-up period. The primary efficacy parameters evaluated were: relapse rate and cumulative abstinence duration (CAD). Results were analyzed according to Intention-To-Treat principles using χ2, t , and multiple regression analyses where appropriate. After 30 days on study medication, 40 of 55 (73%) acamprosate-treated patients were abstinent, compared with 26 of 55 (43%) placebo-treated patients ( p = 0.019). The treatment advantage remained throughout the study medication period and was statistically significant until day 270 ( p = 0.028). Twenty-seven percent of patients on acamprosate and 53% of patients on placebo had a first drink within the first 30 days of the study. The mean CAD was 137 days (40% abstinent days) for the patients treated with acamprosate and 75 days (21% abstinent days) for the placebo group ( p = 0.013). No adverse interaction between acamprosate and disulfiram occurred, and the subgroup who received both medications had a better outcome on CAD than the those on only one or no medication. Acamprosate was well tolerated. Diarrhea was the only significant treatment-induced effect. It was concluded that acamprosate was a useful and safe pharmacotherapy in the long-term treatment of alcoholism. Concomitant administration of disulfiram improved the effectiveness of acamprosate.  相似文献   
75.
We report the case of a 27-year-old male smoker with simultaneous myocardial infarction (MI) and acute peripheral ischaemia. At the time of his first hospitalization, the platelet count and the coronary angiogram were normal. Two years later, the patient presented again with a leg artery occlusion, followed, a few days later, by a recurrence of MI. At this time, the platelet count was high and the coronary angiogram revealed an occlusion of the right coronary artery. The diagnosis of primary thrombocytosis was made by bone marrow aspiration and biopsy. Different unusual mechanisms of MI in young people are discussed in this report.  相似文献   
76.
77.
ObjectivesData on the prevalence of Autism Spectrum Disorder (ASD) reveal several clinical evolutions inducing new psychiatric definitions and diagnostic practices. Thus, autism has shifted from being a rare syndrome with severe clinical forms to a new paradigm: the paradigm of “ordinary” or “invisible” autism, in terms of the frequency and the intensity of the disorders. These changes incorporate new populations into our conception of autism, with new phenotypes that pose theoretical and clinical challenges to clinicians. In response, we propose the hypothesis — based on psychoanalytic theories of psychic structures — of an “ordinary autism” as a definition of a non-prototypical autistic psychic functioning that falls outside the DSM diagnostic framework. This idea seems to provide us new theoretical references that nourish our practices as well as fundamental research.MethodFirst, we will review the nosographic mutations of the DSM-5 and their implications for non-prototypical psychic modes of functioning of autistic people that may not be contained within the autism spectrum's blurry boundaries — especially for the adult population without intellectual delay and in the case of complicated differential diagnosis for clinical and societal reasons. Next, we will discuss the definition of “ordinary” or “invisible” autism in a psychoanalytic structural model, as a possible epistemological orientation for identifying and designing practice with the clinical heterogeneity of autism outside the boundaries of psychiatric ASD.ResultsThe autistic population targeted by the DSM-5 criteria is different from that previously defined by DSM-IV. This leads to two consequences: on the one hand, autistic modes of functioning are not limited to individuals who have been diagnosed with Autism Spectrum Disorders as defined by the DSM-5; thus individuals with autism do not have access to the diagnosis of ASD or are given other diagnoses. The alternative diagnoses proposed by the DSM-5 that attempt to correct this diagnostic exclusion — such as Social (Pragmatic) Communication Disorder — are unsatisfactory. Therefore, there is an entire segment of the autistic population that has subclinical, non-prototypic autistic manifestations or more subtle phenomena discernible in the broader autistic phenotype or sub-threshold autism spectrum that does not have access to the ASD diagnosis and raises differential diagnostic issues. On the other hand, it appears that the autism spectrum brings together extremely different entities and false positives such as schizophrenia and schizophrenic spectrum personality disorders under one diagnostic rubric. Then, the differential problem appears central: both at the theoretical level and in diagnostic practices. The recognition of these limits should encourage us to promote research and clinical applications on this subject. One solution that we envisage is to be found in an extension of Maleval's structural psychoanalytical model: we propose the notion of “ordinary autism” — an echo of ordinary psychosis — to define attenuated or compensated non-prototypical autistic phenotypes, increasingly frequent and with fewer “extraordinary” phenomenological expressions than the classic cases of autism which now call into question the relationship between the normal and the pathological.Discussion“Ordinary autism” seems to offer clinicians the opportunity to formalize the new contemporary and extensive clinical reality of autism. This term situates itself within a theoretical model whose current and future developments might help us respond to clinical and diagnostic issues, but also to therapeutic and societal ones. We propose to continue on the path of the operationalization of these theoretical models in order to identify autistic structural constants that could be found throughout the “ordinary” clinic of autism and could serve as differentiating tools for diagnosis as well as a support in developing and refining therapeutic practices.ConclusionWe conclude that there is an urgent need to conceive of “ordinary autism” to provide us with reference points to respond to new clinical issues, but also to reintroduce respect for the autistic person in his or her subjectivity to the center of our therapeutic practices.  相似文献   
78.
Journal of Autism and Developmental Disorders - The author of the article would like to add a video abstract as a supplementary material for a published article. The supplementary file is published...  相似文献   
79.
80.
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