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   149288篇
  免费   32490篇
  国内免费   2406篇
耳鼻咽喉   5179篇
儿科学   5349篇
妇产科学   2399篇
基础医学   3154篇
口腔科学   1481篇
临床医学   26587篇
内科学   47181篇
皮肤病学   7416篇
神经病学   14713篇
特种医学   6375篇
外科学   40954篇
综合类   251篇
现状与发展   73篇
预防医学   6965篇
眼科学   3350篇
药学   1023篇
中国医学   24篇
肿瘤学   11710篇
  2024年   512篇
  2023年   4786篇
  2022年   1178篇
  2021年   3086篇
  2020年   6017篇
  2019年   2146篇
  2018年   7371篇
  2017年   7334篇
  2016年   8415篇
  2015年   8419篇
  2014年   15486篇
  2013年   15612篇
  2012年   5463篇
  2011年   5500篇
  2010年   10348篇
  2009年   14215篇
  2008年   5744篇
  2007年   3996篇
  2006年   6456篇
  2005年   3727篇
  2004年   2988篇
  2003年   1945篇
  2002年   2060篇
  2001年   3827篇
  2000年   3026篇
  1999年   3224篇
  1998年   3646篇
  1997年   3457篇
  1996年   3367篇
  1995年   3220篇
  1994年   1943篇
  1993年   1558篇
  1992年   1372篇
  1991年   1411篇
  1990年   1059篇
  1989年   1176篇
  1988年   1021篇
  1987年   850篇
  1986年   892篇
  1985年   730篇
  1984年   551篇
  1983年   523篇
  1982年   513篇
  1981年   406篇
  1980年   362篇
  1979年   310篇
  1978年   331篇
  1977年   399篇
  1975年   280篇
  1972年   303篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
91.
92.
Fibromyalgia is a syndrome of widespread pain, nonrestorative sleep, disturbed mood, and fatigue. Optimal treatment involves a multidisciplinary approach with a team of health care providers using pharmacologic and nonpharmacologic treatment. Because of the heterogeneity of the illness, management should be individualized for the patient. Pharmacologic treatment should address issues of pain control, sleep disturbance, fatigue, and any underlying coexisting mood disorder. Nonpharmacologic treatment should include patient education, a regular exercise and stretching program, and cognitive behavioral therapy. All of these are essential to improving functional capacity and quality of life. This review provides general guidelines in initiating a successful pharmacologic treatment program for patients with fibromyalgia.  相似文献   
93.
The clinical syndrome of tuberculous (TB) meningitis leading to ischemic strokes is rarely seen today in immunocompetent adults native to North America. This entity is also notoriously difficult to diagnose because the presenting symptoms are often nonspecific. The authors describe a case of a man with TB meningitis which progressed to recurrent ischemic cerebral infarcts.  相似文献   
94.
95.
96.
97.
98.
Wound pain is a serious problem for elderly patients suffering from chronic leg ulcers, and it may lead to reduced wound healing rates and reduced quality of life. Biatain-Ibu Non-adhesive (Coloplast A/S), a new pain-reducing moist wound healing dressing containing ibuprofen was tested for pain reduction, safety, and efficacy on 10+2 patients in a single-blinded crossover study against Biatain Non-adhesive (Coloplast A/S). Pain was measured with a Numeric Box Scale before, during, and after dressing change. Quality of life was measured using the World Health Organization-5 Well-Being Index. Dressing moist wound healing properties such as absorption capacity and leakage were tested together with assessment of wound exudate and blood plasma content of ibuprofen. Use of the Biatain-Ibu foam dressing correlated with a decrease in pain intensity scores from 7 in the run-in period to approximately 2.5 in the Biatain-Ibu treatment phase. Quality of life measures were improved which together with the reduced pain could contribute to faster wound healing. The moist wound healing properties of Biatain-Ibu were similar to that of the Biatain Non-adhesive and ulcer size was reduced by 24% during the treatment period. Neither side effects nor systemic plasma concentrations of ibuprofen were observed. These data indicate that Biatain-Ibu could reduce persistent and temporary wound pain, increase Quality of life, was found safe to use, and had excellent moist wound healing properties.  相似文献   
99.
100.
Although surgical lung resection could improve prognosis in some patients with multidrug-resistant tuberculosis (MDR-TB), there are no reports on the optimal candidates for this surgery. The aim of the present study was to elucidate the prognostic factors for surgery in patients with MDR-TB. Patients who underwent lung resection for the treatment of MDR-TB between March 1993 and December 2004 were included in the present study. Treatment failure was defined as greater than or equal to two of the five cultures recorded in the final 12 months of treatment being positive, any one of the final three cultures being positive, or the patient having died during treatment. The variables that affected treatment outcomes were identified through univariate and multivariate logistic regression analysis. In total, 79 patients with MDR-TB were included in the present study. The treatment outcomes of 22 (27.8%) patients were classified as failure. A body mass index <18.5 kg x m(-2), primary resistance, resistance to ofloxacin and the presence of a cavitary lesion beyond the range of the surgical resection were associated with treatment failure. Low body mass index, primary resistance, resistance to ofloxacin and cavitary lesions beyond the range of resection are possible poor prognostic factors for surgical lung resection in multidrug-resistant tuberculosis patients.  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