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   45503篇
  免费   3389篇
  国内免费   169篇
耳鼻咽喉   663篇
儿科学   1221篇
妇产科学   786篇
基础医学   5989篇
口腔科学   581篇
临床医学   4661篇
内科学   9595篇
皮肤病学   495篇
神经病学   4369篇
特种医学   1825篇
外科学   7570篇
综合类   839篇
现状与发展   1篇
一般理论   40篇
预防医学   3535篇
眼科学   594篇
药学   3117篇
中国医学   58篇
肿瘤学   3122篇
  2023年   240篇
  2022年   299篇
  2021年   1164篇
  2020年   658篇
  2019年   1073篇
  2018年   1301篇
  2017年   872篇
  2016年   1026篇
  2015年   1238篇
  2014年   1631篇
  2013年   2167篇
  2012年   3602篇
  2011年   3666篇
  2010年   2043篇
  2009年   1831篇
  2008年   3051篇
  2007年   3132篇
  2006年   3049篇
  2005年   3087篇
  2004年   2761篇
  2003年   2609篇
  2002年   2365篇
  2001年   408篇
  2000年   282篇
  1999年   383篇
  1998年   503篇
  1997年   441篇
  1996年   364篇
  1995年   351篇
  1994年   306篇
  1993年   278篇
  1992年   232篇
  1991年   200篇
  1990年   182篇
  1989年   181篇
  1988年   174篇
  1987年   151篇
  1986年   146篇
  1985年   145篇
  1984年   143篇
  1983年   126篇
  1982年   156篇
  1981年   149篇
  1980年   106篇
  1979年   74篇
  1978年   73篇
  1977年   74篇
  1976年   64篇
  1975年   55篇
  1973年   57篇
排序方式: 共有10000条查询结果,搜索用时 187 毫秒
141.
142.
Summary Isolated angiitis of the central nervous system (IAC) was diagnosed in a 40-year-old Caucasian male by histological examination of a leptomeningeal biopsy specimen, and the exclusion of systemic inflammatory or infective disease. Therapy with prednisone 30 mg/day and cyclophosphamide 100 mg/day resulted in clinical and radiological improvement, which have been maintained for an 8-month follow-up period. Magnetic resonance imaging (MRI) showed lesions implicating involvement of specific penetrating vessels at the base of the brain, an unusual complication of IAC, and allowed an accurate MRI-clinical correlation.  相似文献   
143.
Over an eight year period 21 different viral strains excluding polioviruses were isolated in 44 (19%) of 237 cot deaths. The percentage of viral positive cases was significantly greater in over 16 week age groups and in cultures obtained less than 24 hours after death.  相似文献   
144.
145.
146.
147.
148.
149.
Background: Scleromyxoedema is a rare disease of unknown aetiology that is characterized by deposition of mucin and sclerotic induration of the skin; it is associated with paraproteinaemia. Patients suffer from progressive disability due to immobilization and cosmetic disfigurement. Treatment of scleromyxoedema is a therapeutic challenge. The antimalarial hydroxychloroquine has a rapid and reliable effect in reticular erythematous mucinosis. Patients and methods: Four consecutive patients (two women, two men; median age: 50 years) with scleromyxoedema, three of them with IgG λ paraprotein, were treated with hydroxychloroquine. Treatment was initiated with 600 mg p. o. for 10 days, followed by 400 mg for at least 4 weeks, and 200 mg thereafter. Results: Complete remission of skin manifestations was achieved in one patient, whereas three patients achieved a partial remission of 61+, 5 and 25 months' duration. Notably, three patients felt increased mobility and reduced firmness of skin during the first week of treatment, which was reflected in a rapid reduction in dermal thickness. In one patient, dysphagia was reverted as evidenced by normalization of oesophageal clearance. Paraproteinaemia was not influenced at all. Side effects included one case of electroretinogram abnormalities after 19 months of therapy and one case of leucopenia after 3 months. Conclusion: Hydroxychloroquine is an effective form of therapy for scleromyxoedema, leading to rapid and prolonged alleviation of symptoms.  相似文献   
150.
This study investigated whether previous contact with mental illness affected the attitudes to mental illness (AMI) of general student nurses in Hong Kong — the contact hypothesis. We employed a quasi-experimental design. We compared the attitudes to mental illness of students who had previous contact with mental illness through having taken a psychiatric secondment with those who had not taken a psychiatric secondment. Also, we compared the AMI of: students who had taken other courses related to mental illness with those who had not; those who had a family history of mental illness with those who had not; and those who lived with a mentally ill relative with those who did not. We found that previous contact with mental illness had no significant effect on the attitudes to mental illness of the students. In other words our findings do not support the contact hypothesis. Our sample expressed positive general attitudes to mental illness when presented with general issues about mental illness. However, their attitudes were less positive when presented with specific issues about mental illness that might impinge upon their daily lives. We discuss the implications of these findings for mental health nursing practice, education and research.  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