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   14274篇
  免费   678篇
  国内免费   60篇
耳鼻咽喉   255篇
儿科学   259篇
妇产科学   345篇
基础医学   1853篇
口腔科学   1580篇
临床医学   794篇
内科学   3319篇
皮肤病学   256篇
神经病学   995篇
特种医学   326篇
外科学   2112篇
综合类   44篇
一般理论   2篇
预防医学   1004篇
眼科学   321篇
药学   648篇
中国医学   98篇
肿瘤学   801篇
  2024年   9篇
  2023年   80篇
  2022年   191篇
  2021年   449篇
  2020年   272篇
  2019年   342篇
  2018年   462篇
  2017年   266篇
  2016年   359篇
  2015年   455篇
  2014年   658篇
  2013年   727篇
  2012年   1219篇
  2011年   1368篇
  2010年   732篇
  2009年   596篇
  2008年   1052篇
  2007年   1064篇
  2006年   942篇
  2005年   839篇
  2004年   775篇
  2003年   641篇
  2002年   586篇
  2001年   75篇
  2000年   56篇
  1999年   62篇
  1998年   79篇
  1997年   69篇
  1996年   59篇
  1995年   52篇
  1994年   53篇
  1993年   40篇
  1992年   32篇
  1991年   35篇
  1990年   25篇
  1989年   28篇
  1988年   18篇
  1987年   16篇
  1986年   24篇
  1985年   15篇
  1984年   17篇
  1983年   18篇
  1982年   24篇
  1981年   15篇
  1980年   17篇
  1979年   10篇
  1977年   11篇
  1974年   7篇
  1973年   10篇
  1972年   7篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
Objective: Polyunsaturated fatty acids n-3 (PUFA n-3) have shown effects in reducing tumor growth, in particular eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) abundantly present in fish oil (FO). When these fatty acids are provided in the diet, they alter the functions of the cells, particularly in tumor and immune cells. However, the effects of α-linolenic fatty acid (ALA), which is the precursor of EPA and DHA, are controversial. Thus, our objective was to test the effect of this parental fatty acid. Methods: Non-tumor-bearing and tumor-bearing Wistar rats (70 days) were supplemented with 1 g/kg body weight of FO or Oro Inca® (OI) oil (rich in ALA). Immune cells function, proliferation, cytokine production, and subpopulation profile were evaluated. Results: We have shown that innate immune cells enhanced phagocytosis capacity, and increased processing and elimination of antigens. Moreover, there was a decrease in production of pro-inflammatory cytokines (tumor necrosis factor-alpha (TNF-α) and interleukin 6 (IL-6)) by macrophages. Lymphocytes showed decreased proliferation capacity, increased cluster of differentiation 8 (CD8+) subpopulation, and increased TNF-α production. Conclusions: Oil rich in ALA caused similar immune modulation in cancer when compared with FO.  相似文献   
4.
5.
Die Anaesthesiologie - Simulationstraining ist für die Notfallmedizin unverzichtbar, insbesondere in Hinsicht auf eine verbesserte Patientensicherheit. Methoden und Technologien umfassen ein...  相似文献   
6.
7.
Journal of Digital Imaging - Vertebral Compression Fracture (VCF) occurs when the vertebral body partially collapses under the action of compressive forces. Non-traumatic VCFs can be secondary to...  相似文献   
8.
9.
10.

Background Drug-related problems are mostly preventable or predictable circumstances that may impact on health outcomes. Clinical pharmacy activities such as medication therapy management can identify and solve these problems, with potential to improve medication safety and effectiveness. Objective To evaluate ability of medication therapy management service to detect drug-related problems and prevent adverse drug events. This study also aimed to assess the risk factors for drugrelated problem occurrence. Setting Medical intensive care unit of a public tertiary hospital in Brazil. Methods Patients were evaluated by a clinical pharmacist, who provided medication therapy management service. Detected drug-related problems were categorized according to the Pharmaceutical Care Network Europe methodology and analyzed in multinomial regression to identify risk factors. Main outcome measure Potential risk factors for drug-related problem occurrence. Results The proposed medication therapy management service allowed detection of 170 drug-related problems that had potential to reach patients causing harm and other 50 unavoidable adverse events. Drug-related problems identified were more often associated with antibacterial use, caused by improper combinations or inadequate drug dosage. These problems required interventions that were accepted by the multidisciplinary team, resulting in more than 85% adherence and total problem solving. Main risk factors identified were previous diagnosis of kidney injury (OR?=?8.38), use of midazolam (OR?=?7.96), furosemide (OR?=?5.87) and vancomycin (OR?=?4.82). Conclusion Medication therapy management proved to be an effective method not only for drug-related problem detection, but also for adverse drug event prevention, contributing to improve patient safety.

  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