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   6159篇
  免费   502篇
  国内免费   55篇
耳鼻咽喉   40篇
儿科学   126篇
妇产科学   89篇
基础医学   324篇
口腔科学   89篇
临床医学   842篇
内科学   632篇
皮肤病学   365篇
神经病学   225篇
特种医学   115篇
外科学   379篇
综合类   981篇
预防医学   1650篇
眼科学   61篇
药学   472篇
  17篇
中国医学   101篇
肿瘤学   208篇
  2024年   18篇
  2023年   127篇
  2022年   206篇
  2021年   309篇
  2020年   279篇
  2019年   287篇
  2018年   257篇
  2017年   230篇
  2016年   238篇
  2015年   203篇
  2014年   469篇
  2013年   642篇
  2012年   449篇
  2011年   467篇
  2010年   337篇
  2009年   314篇
  2008年   280篇
  2007年   252篇
  2006年   229篇
  2005年   170篇
  2004年   159篇
  2003年   87篇
  2002年   93篇
  2001年   71篇
  2000年   55篇
  1999年   44篇
  1998年   44篇
  1997年   32篇
  1996年   37篇
  1995年   40篇
  1994年   33篇
  1993年   29篇
  1992年   22篇
  1991年   23篇
  1990年   20篇
  1989年   18篇
  1988年   18篇
  1987年   22篇
  1986年   15篇
  1985年   17篇
  1984年   12篇
  1982年   7篇
  1981年   8篇
  1980年   8篇
  1979年   11篇
  1977年   6篇
  1976年   4篇
  1975年   4篇
  1974年   4篇
  1973年   4篇
排序方式: 共有6716条查询结果,搜索用时 375 毫秒
91.
ABSTRACT

Low levels of symptom recognition by staff have been “gateway” barriers to the management of depression in long-term care. The study aims were to refine a depression training program for front-line staff in long-term care and provide evaluative knowledge outcome data. Three primary training modules provide an overview of depression symptoms; a review of causes and situational and environmental contributing factors; and communication strategies, medications, and clinical treatment strategies. McNemar’s chi-square tests and paired t-tests were used to examine change in knowledge. Data were analyzed for up to 143 staff members, the majority from nursing. Significant changes (p < .001) in knowledge were observed for all modules, with an average change of between 2 and 3 points. Evidence was provided that participants acquired desired information in the recognition, detection, and differential diagnosis and treatment strategies for those persons at significant risk for a depressive disorder.  相似文献   
92.
93.
94.
BackgroundBreakfast consumption is associated with better diet quality and healthier weights, yet many adolescents miss breakfast. Nationally, 17.1% of students participate in the School Breakfast Program (SBP). Only 10% of high school students participate.ObjectiveOur aim was to evaluate an environmental intervention to increase SBP participation in high schools.DesignA group randomized trial was carried out from 2012 to 2015.Participants/settingNinth- and 10th-grade students enrolled in 16 rural schools in Minnesota (median 387 students) were randomized to intervention or control condition.InterventionA school-based intervention that included two key components was implemented over a 12-month period. One component focused on increasing SBP participation by increasing student access to school breakfast through changes in school breakfast service practices (eg, serving breakfast from a grab-n-go cart in the atrium; expanding breakfast service times). The other component focused on promoting school breakfast through student-directed marketing campaigns.Main outcome measureChange in school-level participation in the SBP was assessed between baseline (among ninth and tenth graders) and follow-up (among tenth and eleventh graders). School meal and attendance records were used to assess change in school-level participation rates in the SBP.Statistical analysesThe Wilcoxon test was used for analysis of difference in change in mean SBP participation rate by experimental group.ResultsThe median change in SBP participation rate between baseline and follow-up was 3% (interquartile range=13.5%) among the eight schools in the intervention group and 0.5% (interquartile range=0.7%) among the eight schools in the control group. This difference in change between groups was statistically significant (Wilcoxon test, P=0.03). The intervention effect increased throughout the intervention period, with change in mean SBP participation rate by the end of the school year reaching 10.3% (95% CI 3.0 to 17.6). However, among the intervention schools, the change in mean SBP participation rates was highly variable (range=–0.8% to 24.8%).ConclusionsInterventions designed to improve access to the SBP by reducing environmental and social barriers have potential to increase participation among high school students.  相似文献   
95.
This study aimed to investigate the effectiveness of an oral health promotion intervention implemented in special care establishments by dentists trained online. Twenty‐six dentists intervening in 27 French special care establishments undertook a standardised oral health promotion intervention, including a conference presentation for care staff and hands‐on toothbrushing workshops. Oral hygiene status of the residents was performed at baseline and at 6 months, and were compared using the McNemar test. Mixed logistic regression was performed to identify the factors associated with an improvement of dental plaque removal. The oral health intervention was completed by 890 residents: 445 children, 373 adults and 72 elderly adults. At baseline, dental plaque was observed for 79.8% of the 797 dentate residents. Among the 691 dentate residents included in the final analysis, dental plaque removal was improved for 34%. Improvement in dental plaque removal was recorded more often for the group of 13 to 20‐year‐old residents (OR = 1.97; 95% CI = 1.15–3.38). The results indicate that this programme failed to significantly improve the dental plaque removal of the residents. More research is needed to understand the limiting factors of such interventions.  相似文献   
96.
目的回顾性分析2010~2015年404例梅毒患者的发病特点,以探讨近年来梅毒发病率居高不下的相关原因。方法将404例梅毒患者按发病年度、发病年龄及临床分期进行分类,探讨其临床表现及特征,总结各期诊断和治疗上的薄弱环节。结果整体发病比率呈逐年上升趋势,除Ⅰ期梅毒为男女,Ⅱ期梅毒和潜伏梅毒均男女,总发病情况男女比例为1∶1.04。患病年龄:性活跃人群288例,占71.29%,60岁以上老年人107例,占26.49%。传播途径及职业:非婚性接触传染仍为主要传播途径,通过男男性行为感染的传播方式也不容忽视;职业分布以农牧民及无业人员为主,占73.51%。教育程度:梅毒患者的受教育程度普遍较低,可能与普遍缺乏对健康知识的了解和性传播疾病的认识有关。结论通过对本地区404例梅毒的发病情况分析,其传播途径以非婚性接触为主;需要加强对老年人性传播疾病的防控,且防控工作重点应向农村牧区转移。  相似文献   
97.
SUMMARY

This paper describes a program which provides occupational therapy services to a population of homeless individuals residing in an emergency shelter in Ft. Lauderdale, Florida. Principles of community-built practice were combined with the use of the Canadian Model of Occupational Performance to provide the theoretical approach for the program. A needs assessment was done and the programming developed and implemented based on identified needs is described. Outcomes and recommendations for the future are discussed.  相似文献   
98.
99.
100.
目的 总结宫颈癌患者合并梅毒护理过程中的经验和体会.方法 回顾性分析2008年1月 -2011年12月我院妇瘤外科收治的宫颈癌合并梅毒住院患者34例.结果 我科住院拟手术治疗患者宫颈癌329例中 ,梅毒螺旋体抗体阳性者共34例.结论 宫颈癌患者合并梅毒为常见病 ,有效的护理干预提高了宫颈癌合并梅毒感染患者的生活质量 ,规范了临床工作的流程及降低了医护人员职业暴露的发生率.  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