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   782篇
  免费   44篇
  国内免费   35篇
耳鼻咽喉   5篇
儿科学   68篇
妇产科学   3篇
基础医学   77篇
口腔科学   28篇
临床医学   114篇
内科学   163篇
皮肤病学   22篇
神经病学   15篇
特种医学   184篇
外科学   34篇
综合类   24篇
预防医学   47篇
眼科学   14篇
药学   33篇
中国医学   1篇
肿瘤学   29篇
  2024年   1篇
  2023年   2篇
  2022年   2篇
  2021年   10篇
  2020年   5篇
  2019年   8篇
  2018年   16篇
  2017年   13篇
  2016年   10篇
  2015年   18篇
  2014年   12篇
  2013年   27篇
  2012年   16篇
  2011年   15篇
  2010年   43篇
  2009年   40篇
  2008年   14篇
  2007年   22篇
  2006年   16篇
  2005年   35篇
  2004年   13篇
  2003年   2篇
  2002年   8篇
  2001年   13篇
  2000年   8篇
  1999年   16篇
  1998年   48篇
  1997年   46篇
  1996年   50篇
  1995年   34篇
  1994年   40篇
  1993年   35篇
  1992年   12篇
  1991年   14篇
  1990年   9篇
  1989年   22篇
  1988年   43篇
  1987年   19篇
  1986年   15篇
  1985年   28篇
  1984年   6篇
  1983年   2篇
  1982年   6篇
  1981年   8篇
  1980年   8篇
  1979年   5篇
  1978年   5篇
  1977年   6篇
  1976年   12篇
  1975年   3篇
排序方式: 共有861条查询结果,搜索用时 0 毫秒
101.
To preserve the supportive capabilities of partners of heart failure (HF) patients, it is necessary to gain insight in the experiences and potential needs of these partners. Thirteen partners of HF patients participated in semistructured interviews specifically focused on their experiences as a partner. Patients had had HF for at least 18 months, and their partners were interviewed at home without the patient being present. Content analysis was used to organize the data and to identify categories and themes. Partners of HF patients experience several changes in life as reflected in the main themes: changes in life, changes in relationship, coping, and support. Partners support patients in their daily activities; they often change their own daily schedule and have to adjust joint activities. Regaining a new balance together is one of the challenges that couples face when confronted with HF. Anxiety is an important theme especially in the acute phase that can interfere with adequate coping strategies. Changes in relationship are related to difficulties in communication and sexuality. Although most partners seem to cope relatively well, the impact of HF on their lives is profound. Partners are vulnerable especially at the onset of the illness, and therefore, it is important to involve partners actively in the early process of rehabilitation and recognize their importance to the patient and their potential problems.  相似文献   
102.
103.
104.
105.
106.
107.
108.
Because a close relationship has been established between mixed cryoglobulinemia and hepatitis C virus (HCV) infection, the clinical, histologic, and virologic findings of 31 patients affected by mixed cryoglobulinemia have been determined. HCV infection was investigated by the presence of anti-HCV antibodies and by polymerase chain reaction (PCR) amplification of the 5' untranslated region (5'UTR), and the genotype of HCV was also determined according to Okamoto et al (J Gen Virol 73:673, 1992). A bone marrow (BM) biopsy was performed in all patients, and liver and kidney biopsies were performed when indicated. The prevalence of anti-HCV antibodies was high (83.9%); polymerase chain reaction amplification of the 5' untranslated region was positive in 26 subjects (83.9%), and Core region amplification in 26 of 27 subjects (96.2%). A high prevalence of genotype II was found (76.6%). Chronic liver disease was present in 15 (48%) patients. BM biopsy specimens showed the presence of low-grade non-Hodgkin's lymphomas in 12 cases (38.7%), whereas, in 11 patients (35.5%), the BM infiltration was not monoclonal (reactive). Mixed cryoglobulinemia is closely associated with HCV infection. Apparently, only 1 patient was not infected by the virus. Several HCV genotypes are involved in the pathogenesis of mixed cryoglobulinemia. The disease is associated with a high prevalence of low-grade non-Hodgkin's lymphomas.  相似文献   
109.
110.
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