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   42975篇
  免费   3091篇
  国内免费   147篇
耳鼻咽喉   464篇
儿科学   1378篇
妇产科学   1175篇
基础医学   5924篇
口腔科学   500篇
临床医学   6279篇
内科学   8269篇
皮肤病学   712篇
神经病学   4356篇
特种医学   811篇
外国民族医学   1篇
外科学   3460篇
综合类   768篇
一般理论   42篇
预防医学   5022篇
眼科学   882篇
药学   2988篇
中国医学   79篇
肿瘤学   3103篇
  2023年   223篇
  2022年   469篇
  2021年   866篇
  2020年   478篇
  2019年   802篇
  2018年   932篇
  2017年   723篇
  2016年   804篇
  2015年   977篇
  2014年   1313篇
  2013年   1992篇
  2012年   3011篇
  2011年   3172篇
  2010年   1605篇
  2009年   1559篇
  2008年   2851篇
  2007年   3067篇
  2006年   3144篇
  2005年   3092篇
  2004年   3013篇
  2003年   2826篇
  2002年   2621篇
  2001年   379篇
  2000年   280篇
  1999年   379篇
  1998年   483篇
  1997年   418篇
  1996年   378篇
  1995年   362篇
  1994年   267篇
  1993年   297篇
  1992年   207篇
  1991年   206篇
  1990年   186篇
  1989年   179篇
  1988年   192篇
  1987年   153篇
  1986年   131篇
  1985年   150篇
  1984年   191篇
  1983年   186篇
  1982年   237篇
  1981年   177篇
  1980年   185篇
  1979年   111篇
  1978年   107篇
  1977年   112篇
  1976年   86篇
  1975年   72篇
  1974年   78篇
排序方式: 共有10000条查询结果,搜索用时 10 毫秒
991.
992.
BackgroundCytomegalovirus (CMV) reactivation remains one of the most frequent complications after allogeneic hematopoietic stem cell transplantation (HSCT).MethodsAn analysis of the pre-transplant risk factors of CMV reactivation was performed in 98 patients aged 0.5–22 years (median 10.5) undergoing allogeneic HSCT. CMV reactivation was tested by assessing viral load using PCR method. Following factors were analyzed: type of conditioning, graft source, donor type, use of T-depletion and CMV-serostatus of the donor and recipient. Each factor was assigned from 0 to 2 points. Based on total score for each patient, CMV reactivation risk scale was developed, and two groups with low (LR) and high (HR) risk were determined.ResultsCMV reactivation was seen in 25 patients (24.5%). The significant risk factors for CMV reactivation were: CMV-positive recipient (p<0.001), unrelated donor (p<0.002), use of ATG (p<0.002) and PBSC (p<0,01). In the HR group the incidence of reactivation CMV was significantly higher than in LR group (47.8% vs. 5.4%, p<0.001).ConclusionsCMV seropositivity of the recipient was an independent predictor factor of CMV reactivation. The use of risk point scale of CMV reactivation allows for identification of patients with the higher risk of CMV reactivation.  相似文献   
993.
Forensic Toxicology - Cases of iron intoxication are not very often encountered in toxicology practice, and most of those reported concern accidental intoxications with iron supplements in young...  相似文献   
994.
Journal of Neurology - The epileptogenicity of recombinant tissue-plasminogen activator (rt-PA) has been suggested, but seizures were not evaluated in randomised controlled trials. To evaluate...  相似文献   
995.
996.

Objective

Assess accuracy of caregiver understanding of children's prescribed medications and examine factors associated with accurate recall.

Methods

Cross-sectional, observational study of English- or Spanish-speaking caregivers of primary care patients aged 0–7 years. Child and visit characteristics and caregiver health literacy (Short Test of Health Literacy in Adults) were assessed. Post-visit, caregivers completed questionnaires on medications prescribed. Caregiver and medical record agreement on medication name and administration (dose and frequency) were examined using chi square and logistic regression.

Results

Analyses included 68 caregivers (28% low health literacy); 96% of children had public insurance. Caregivers indicated that the doctor provided clear medication information (100%) and they could follow instructions (98%). 101 medicines were prescribed; 6 were recalled by caregiver only. 71% of medications were accurately named; 37% of administration instructions were accurately recalled. Accurate naming was more often found for patients 3–7 years, without conditions requiring repeat visits, and new medications. Accurate administration responses were associated with having only 1 child at the visit.

Conclusion

Unperceived medication instruction understanding gaps exist at physician visits for caregivers of all literacy levels. Communication and care delivery practices need further evaluation.

Practice implications

Clinicians should be aware of the frequency of caregiver medication misunderstanding.  相似文献   
997.

Objective

This study aims to assess unfulfilled information needs of native-Dutch and Turkish-Dutch general practitioner (GP) patients in the Netherlands. In addition, the relation between perceived and recorded information provision by GPs is studied.

Methods

Unfulfilled information needs of native-Dutch (N = 117) and Turkish-Dutch patients (N = 74) were assessed through pre- and post-consultation questionnaires. Audiotapes of GP consultations were made to code GPs’ information provision.

Results

Turkish-Dutch patients experience more unfulfilled information needs than native-Dutch patients, in particular those who identify equally with Dutch and Turkish culture. Overall, perceived information provision is hardly related to recorded information provision.

Conclusion

GPs insufficiently provide Turkish-Dutch patients and, to a lesser extent, native-Dutch patients as well, the information they need.

Practice implications

GPs should be trained in giving adequate, tailored information to patients with various ethnic and cultural backgrounds.  相似文献   
998.
999.
1000.
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