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   62843篇
  免费   2153篇
  国内免费   435篇
耳鼻咽喉   385篇
儿科学   691篇
妇产科学   580篇
基础医学   6940篇
口腔科学   3454篇
临床医学   4474篇
内科学   11848篇
皮肤病学   1332篇
神经病学   5107篇
特种医学   1566篇
外国民族医学   1篇
外科学   12111篇
综合类   2909篇
现状与发展   1篇
一般理论   5篇
预防医学   4839篇
眼科学   1130篇
药学   3768篇
  16篇
中国医学   2320篇
肿瘤学   1954篇
  2023年   507篇
  2022年   718篇
  2021年   1856篇
  2020年   1101篇
  2019年   4995篇
  2018年   5250篇
  2017年   3304篇
  2016年   891篇
  2015年   848篇
  2014年   1545篇
  2013年   1637篇
  2012年   1203篇
  2011年   1421篇
  2010年   1230篇
  2009年   947篇
  2008年   980篇
  2007年   927篇
  2006年   837篇
  2005年   679篇
  2004年   555篇
  2003年   587篇
  2002年   412篇
  2001年   473篇
  2000年   361篇
  1999年   357篇
  1998年   205篇
  1997年   200篇
  1996年   168篇
  1995年   174篇
  1994年   143篇
  1993年   129篇
  1992年   123篇
  1991年   115篇
  1989年   83篇
  1988年   72篇
  1987年   79篇
  1986年   72篇
  1985年   2823篇
  1984年   3370篇
  1983年   2859篇
  1982年   3324篇
  1981年   3018篇
  1980年   2509篇
  1979年   2496篇
  1978年   2060篇
  1977年   1529篇
  1976年   1991篇
  1975年   1511篇
  1974年   1322篇
  1973年   1271篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
991.
992.
993.
994.
995.
Liver health is a key determinant of cardiovascular risk (CVR). Hepatic fibrosis is the shared common result of chronic hepatitis, irrespective of aetiology. Fibrosis profoundly distorts liver tissue architecture and perturbs hepatic physiology, dictates the course of chronic liver disease and is increasingly recognized as a CVR factor. The relative weights of pre-diabetes and hepatic fibrosis as risk factors for major adverse cardiac events (MACE) in patients with HCV remain an open issue. Sasso and Colleagues answered this research question by treating approximately half of 770 HCV positive pre-diabetic patients with direct antiviral agents (DAAs), while the rest served as historical controls. Data have shown that achieving HCV clearance with DAAs was associated with a 60% reduced risk of MACE, thereby implying that this antiviral strategy is recommended in HCV positive pre-diabetic patients, regardless of the severity of liver disease and concurrent CVR factors. This study paves the way for additional studies addressing the molecular patho-mechanisms and changes in the clinical spectrum involved in cardio-metabolic protection following HCV eradication in patients with pre-diabetes.  相似文献   
996.
997.
998.
999.
1000.
BackgroundFruit consumption is known to be beneficial to health. However, the health benefits of fruit juice are controversial due to its high sugar content.ObjectivesTo examine the associations of frequency of consumption of whole fruit and fruit juice with obesity and metabolic syndrome.DesignThis cross-sectional study used data from the 2012-2015 Korea National Health and Nutrition Examination Survey.ParticipantsA total of 10,460 adults (4,082 men and 6,378 women) aged 19 to 64 years were included in the study.Main outcome measuresFrequency of consumption of whole fruit and fruit juice was evaluated using a food frequency questionnaire, and dietary sugar intake was calculated using a 24-hour recall. Obesity and abdominal obesity were determined using body mass index and waist circumference, respectively. Metabolic syndrome was defined on the basis of the National Cholesterol Education Program Adult Treatment Panel III.Statistical analyses performedMultiple logistic regression analysis was performed to examine the associations between frequency of whole fruit or fruit juice consumption and obesity and metabolic syndrome abnormalities.ResultsThe percentage of participants who consumed whole fruit daily was 32.6%, whereas 52.3% consumed fruit juice rarely. The average intake of total sugars was 14.9% of total energy, which was within the recommend range (<20% of total energy) for Koreans. Consuming whole fruit ≥1 time/day was associated with reduced prevalence of obesity, abdominal obesity, and elevated blood pressure compared with consuming whole fruit ≤1 time/wk. However, frequency of fruit juice consumption showed no association with obesity, abdominal obesity, and metabolic syndrome.ConclusionsFrequency of whole fruit consumption was associated with reduced prevalence of obesity and metabolic syndrome abnormalities among Korean adults with average total sugar intake within the recommended range.  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