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   18121篇
  免费   1702篇
  国内免费   240篇
耳鼻咽喉   29篇
儿科学   947篇
妇产科学   346篇
基础医学   2518篇
口腔科学   158篇
临床医学   4446篇
内科学   814篇
皮肤病学   45篇
神经病学   4269篇
特种医学   196篇
外科学   487篇
综合类   1461篇
一般理论   9篇
预防医学   3262篇
眼科学   52篇
药学   609篇
  12篇
中国医学   232篇
肿瘤学   171篇
  2024年   81篇
  2023年   591篇
  2022年   488篇
  2021年   771篇
  2020年   830篇
  2019年   812篇
  2018年   718篇
  2017年   727篇
  2016年   660篇
  2015年   708篇
  2014年   924篇
  2013年   1571篇
  2012年   824篇
  2011年   880篇
  2010年   698篇
  2009年   764篇
  2008年   807篇
  2007年   886篇
  2006年   730篇
  2005年   645篇
  2004年   617篇
  2003年   520篇
  2002年   452篇
  2001年   343篇
  2000年   287篇
  1999年   280篇
  1998年   294篇
  1997年   232篇
  1996年   229篇
  1995年   172篇
  1994年   156篇
  1993年   170篇
  1992年   127篇
  1991年   123篇
  1990年   87篇
  1989年   82篇
  1988年   89篇
  1987年   90篇
  1986年   75篇
  1985年   71篇
  1984年   82篇
  1983年   39篇
  1982年   64篇
  1981年   60篇
  1980年   48篇
  1979年   41篇
  1978年   23篇
  1977年   30篇
  1976年   18篇
  1974年   10篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
We report on a boy with severe growth and mental retardation, syndactyly of toes and facial anomalies. This phenotype can easily be classified in the group of craniodigital syndromes, but it is difficult to make a more clearly defined diagnosis, based on other minor anomalies, because of the presence of overlapping features. On the basis of various pathognomic features, we conclude that our patient could be an additional case of Filippi syndrome. Moreover, newly recognised features in this patient may be due to variability in phenotypic expression.  相似文献   
92.
A follow-up investigation of 24 patients with hereditary spasticity in a geographically isolated northern Swedish population, first examined by Böök (1953), was performed. Fifteen of them were dead. During the period from 1950–1972 five new cases of spastic syndromes were diagnosed in this population. The patterns of clinical symptoms and the genetic associations between the new and 24 previously reported patients with spastic syndromes were analyzed. Three of the five new cases had a specific syndrome. This starts in the first years of life with ataxia, which is followed by dysarthria, spasticity and jerky intention tremor. Initially the patients are mentally normal, but there seems to be slight mental deterioration through the years. The disorder is a progressive spinocerebellar degeneration with autosomal recessive inheritance.  相似文献   
93.
Background Sensory impairments (SIs) are more prevalent in people with intellectual disability (ID). Both conditions lead to higher rates of emotional and behavioural problems than in the general population. The identification of psychiatric disorders in this group can be difficult, particularly in those with severe ID and limited communication skills. Method The present paper presents a series of 18 case reports of individuals with ID, SI and behavioural problems. Results The majority of cases were young male caucasians with congenital rubella syndrome and autistic spectrum disorder, referred because of self‐injurious behaviour (SIB) or aggression. Nine cases were treated with autidepressants, five underwent environmental changes and two had medication reduced. All showed some improvement. Conclusions The benefits of comprehensive assessments, the use of standardized assessment tools and trials of treatments are discussed in the context of making psychiatric diagnoses.  相似文献   
94.
癔症性精神障碍与癫癎性精神障碍临床及脑电图对照分析   总被引:1,自引:0,他引:1  
目的:观察癔症性精神障碍与癫痫性精神障碍的临床及脑电图特点并对照分析。方法:采用日本光电5214脑电图系统,按照国际10~20系统标准放置电极,进行单极双极、过度换气、闪光试验测试的描记方法检查脑电图。结果:两组病人各30例,癔症性精神障碍组边缘状态2例,轻度异常2例,中度异常及重度异常无1人。而癫痫性精神障碍组边缘状态10例,轻度异常4例,中度异常及重度异常共12例。结论:虽然两组临床发作相似,但有明显差异,癫痫性精神障碍组EEG阳性率明显升高,疗效差。癔症性精神障碍组EEG无一例中度异常或重度异常,治疗效果好。  相似文献   
95.
武警部队医学生心理健康状况调查   总被引:3,自引:0,他引:3  
目的 了解武警部队医学生心理健康状况 ,探讨增进武警部队学员心理健康的对策。方法 采用症状自评量表 (SCL - 90 )为工具 ,对随机抽取的 312名武警医学生进行心理健康状况测试。结果 武警医学生SCL - 90各项因子分普遍低于武警军人组和国内常模青年组 (P<0 .0 5 ) ;总均分 1.39± 0 .34,低于武警军人组 (1.4 7± 0 .4 2 ,P <0 .0 1)。结论 武警医学生心理健康状况优于武警军人和国内常模青年组。但仍存在问题 ,部队教育工作者应根据武警院校学员特点 ,积极开展心理卫生教育 ,以提高军校学员整体心理素质  相似文献   
96.
In order to elucidate the psychiatric comorbidity of patients in alcohol and other substance use disorder treatment we examined a representative sample of such patients in Iceland (249 men and 102 women). Over 70% of pure alcoholics and over 90% of polysubstance users had comorbid diagnoses, a prevalence higher than in the Epidemiological Catchment Area study in the United States, but similar to clinical studies from North America. The most prevalent disorders were: affective (33%), anxiety (65%), antisocial personality disorder (28%) and psychosexual dysfunction (20%). Pure alcoholics and polysubstance users in studies on psychiatric comorbidity should be separated. Anxiety and affective disorders influence treatment seeking. Findings concerning the impact of psychiatric comorbidity on course should be comparable between North America and Europe.  相似文献   
97.
Summary Noise levels around educational centres can negatively affect the performance of both teachers and pupils. Two public schools in Valencia, Spain, were selected for study. One of these schools was exposed to excessively high road traffic noise levels while the other was located in a relatively quiet area. The socioeconomic level of those attending the schools was very similar. A set of external and internal noise measurements were carried out, along with two different attention tests among the children. Test results were consistently better (both for tests and for children from different classrooms in each school) in the quiet school. Exposure to high traffic noise levels in the noisy school over the whole school year is a plausible determinant of these results.  相似文献   
98.
The primary purpose of this study was to apply an occupational therapy programme for social skills training based on a cognitive-behavioural frame of reference to individuals with long-term mental illness. The goal of the social skills training group was to enable patients to develop verbal and non-verbal communication skills that could be generalised to everyday interpersonal encounters. A case example of the application of social skills training with a 38-year-old single male with a diagnosis of paranoid schizophrenia is described. The Group-Interaction Skills Survey developed by the author served as an outcome measure. Qualitative data confirmed the researcher's hypothesis that individuals with long-term mental illness can benefit from social skills training using a combination of role-playing, sociodrama, videotape recordings and creative media. Copyright © 1996 Whurr Publishers Ltd.  相似文献   
99.
The present paper reports on the inaugural meeting of the Mental Health Special Interest Research Group (SIRG) of the International Association for the Scientific study of Intellectual disability which was held at Fitzwilliam College, Cambridge, UK, in March 1998. The meeting was organized in conjunction with the Ninth Annual SIRG on ageing and intellectual disability. Representatives from North America, several European and Scandinavian countries, Australia, and Israel attended. Two broad themes had been determined prior to the meeting: ‘Improving the detection of mental health problems’ and ‘Research strategies for identifying risk factors for mental health problems’. In the presentations and subsequent discussions, it was apparent that there were extrenely diverse perspectives both across and within the different countries represented. Not only were individuals' experiences very different, but most strikingly, the theoretical frameworks were very diverse. This was partly a function of there being understandable differences in perspectives across disciplines, but at its most marked, there were fundamental differences in the way both intellectual disability and mental health were conceptualized.  相似文献   
100.
The Italian mental health reform nine years on   总被引:2,自引:0,他引:2  
It is 9 years since the mental health reform was passed by the Italian Parliament. The author presents a data-based evaluation of the effects of the Italian mental health reform. There are still many problems to be resolved: More than 30,000 inpatients are still in psychiatric hospitals and little is known of the fate of those discharged in recent years. District mental health services are still lacking, especially in the south of the country; Psychiatric units in the general hospital function much the same way as the "old" psychiatric hospitals. The pattern of mental health services consumers have changed: They are younger with less severe psychiatric diagnosis and come from a higher social background.  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