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   2933篇
  免费   252篇
  国内免费   7篇
耳鼻咽喉   28篇
儿科学   102篇
妇产科学   129篇
基础医学   391篇
口腔科学   50篇
临床医学   327篇
内科学   560篇
皮肤病学   52篇
神经病学   305篇
特种医学   58篇
外科学   302篇
综合类   106篇
一般理论   6篇
预防医学   392篇
眼科学   33篇
药学   177篇
中国医学   3篇
肿瘤学   171篇
  2023年   37篇
  2022年   47篇
  2021年   114篇
  2020年   64篇
  2019年   100篇
  2018年   94篇
  2017年   83篇
  2016年   75篇
  2015年   111篇
  2014年   125篇
  2013年   175篇
  2012年   254篇
  2011年   215篇
  2010年   157篇
  2009年   111篇
  2008年   157篇
  2007年   186篇
  2006年   166篇
  2005年   148篇
  2004年   114篇
  2003年   113篇
  2002年   108篇
  2001年   25篇
  2000年   18篇
  1999年   18篇
  1998年   38篇
  1997年   24篇
  1996年   22篇
  1995年   28篇
  1994年   18篇
  1993年   6篇
  1992年   15篇
  1991年   14篇
  1990年   13篇
  1989年   8篇
  1988年   15篇
  1987年   7篇
  1986年   6篇
  1985年   9篇
  1984年   8篇
  1982年   9篇
  1981年   5篇
  1980年   8篇
  1979年   5篇
  1977年   5篇
  1973年   8篇
  1942年   4篇
  1941年   4篇
  1938年   4篇
  1918年   5篇
排序方式: 共有3192条查询结果,搜索用时 218 毫秒
1.
Adolescence is a tumultuous and challenging time period in life. Sexual risk behavior among adolescents is a widespread topic of interest in the current literature. Two common factors that influence increased sexual risk behavior are symptoms of depression and negative body image. The purpose of this study was to investigate the effect of body image and symptoms of depression upon sexual risk-taking in an adolescent female population. A secondary data analysis of the 2011 Youth Risk Behavior Survey (YRBS) was used to explore girls’ sexual activity, body image, and mental health. There were 7,708 high-school girls who participated in this study. Three questions were used to represent the constructs under investigation. There were significant correlations between sexual activity, body image, and symptoms of depression; only symptoms of depression were significant predictors of both sexual activity and condom usage. Body image was a predictor of sexual activity, but not condom use. Our findings support previous studies that suggested that people with depressive symptoms were more likely to engage in risky sexual behaviors. Our study also supports the idea that a negative body image decreases sexual activity; however, other researchers have reported that negative body image leads to an increase in sexual activity.  相似文献   
2.
3.
Background Familial partial lipodystrophy (FPLD) is a monogenic form of diabetes characterised by a dominantly inherited disorder of adipose tissue associated with the loss of subcutaneous fat from the limbs and trunk, with excess fat deposited around the face and neck. The lipodystrophy causes severe insulin resistance, resulting in acanthosis nigricans, diabetes, dyslipidaemia, and increased risk of cardiovascular disease. Preliminary results from animals and man suggest that increasing subcutaneous fat by treatment with thiazolidinediones should improve insulin resistance and the associated features of this syndrome. Case report We report a 24-year-old patient with FPLD caused by a mutation in the LMNA gene (R482W) treated with 12 months of rosiglitazone. Subcutaneous fat increased following rosiglitazone treatment as demonstrated by a 29% generalised increase in skin-fold thickness. Leptin levels increased from 5.8 to 11.2 ng/ml. Compared with treatment on Metformin, there was an increase in insulin sensitivity (HOMA S% 17.2–31.6) but no change in glycaemic control. The lipid profile worsened during the follow-up period. Conclusion This initial case suggests that, for modification of cardiovascular risk factors, there are no clear advantages in treating patients with FPLD with rosiglitazone despite increases in subcutaneous adipose tissue. Larger series will be needed to identify moderate beneficial effects and treatment may be more effective in patients with generalised forms of lipodystrophy.  相似文献   
4.
5.
6.
7.
Chiropractic fee negotiations in Saskatchewan utilize the Chiropractic Compensation Review Committee with recourse to the Chiropractic Consultation Committee. Health care professionals who practise on a fee for service basis provide the government with a budgetary problem. Although the fees are set, the health care provider can determine his own income by deciding how many visit services he/she wishes to provide. In the fiscal years 1981-82 to 1990-91, chiropractors earned $699.00 per year more than one would expect given the increases in fee schedules. Each chiropractor earned $2,329.00 per year more than was necessary to make up for losses due to inflation. The allegation that unnecessary treatments were performed on patients is countered by analysis of the services per discrete patient values by mode of practice. The increased earnings of chiropractors was accomplished by treating an increasing percentage of the population who sought health care. Comparative information was obtained from the four western provinces.  相似文献   
8.
Comfort management is a priority for patients in all settings. Comfort theory provides a foundational and holistic approach to comfort management. This article reviews comfort theory and presents the application of comfort theory in the perianesthesia setting. OBJECTIVES: -Based on the content of the following article, the reader will be able to (1) define comfort; (2) identify comfort interventions; and (3) discuss the importance of a goal for enhanced comfort in patients.  相似文献   
9.
10.
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