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   124405篇
  免费   7248篇
  国内免费   1609篇
耳鼻咽喉   1667篇
儿科学   3103篇
妇产科学   4170篇
基础医学   18890篇
口腔科学   3719篇
临床医学   9691篇
内科学   22893篇
皮肤病学   2550篇
神经病学   8314篇
特种医学   4180篇
外国民族医学   5篇
外科学   17667篇
综合类   5311篇
一般理论   43篇
预防医学   9091篇
眼科学   2986篇
药学   10709篇
中国医学   869篇
肿瘤学   7404篇
  2021年   1277篇
  2019年   1206篇
  2018年   1824篇
  2017年   1312篇
  2016年   1352篇
  2015年   1655篇
  2014年   2162篇
  2013年   2685篇
  2012年   3977篇
  2011年   4253篇
  2010年   2579篇
  2009年   2268篇
  2008年   3702篇
  2007年   3936篇
  2006年   3905篇
  2005年   3450篇
  2004年   3205篇
  2003年   3015篇
  2002年   2817篇
  2001年   6784篇
  2000年   6959篇
  1999年   5732篇
  1998年   1873篇
  1997年   1404篇
  1996年   970篇
  1995年   882篇
  1992年   3750篇
  1991年   3819篇
  1990年   3560篇
  1989年   3563篇
  1988年   3442篇
  1987年   3283篇
  1986年   3094篇
  1985年   2978篇
  1984年   2057篇
  1983年   1806篇
  1982年   1002篇
  1979年   1913篇
  1978年   1194篇
  1977年   990篇
  1976年   920篇
  1975年   1194篇
  1974年   1362篇
  1973年   1418篇
  1972年   1361篇
  1971年   1252篇
  1970年   1140篇
  1969年   1121篇
  1968年   1025篇
  1967年   900篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
2.
3.
4.
BackgroundThe measurement of health-related quality of life (HRQoL) provides information about the perceived burden of the health condition and treatments from a lived experience. The Brisbane Burn Scar Impact Profile (caregiver report for young children, BBSIP0–8), developed in 2013, is a proxy-report measure of burn scar-specific HRQoL. The aim of this study was to report its psychometric properties in line with an evaluative purpose.MethodsCaregivers of children up to 8 years of age at risk of burn scarring were recruited into a prospective, longitudinal cohort study. Caregivers completed the BBSIP0–8, Pediatric Quality of Life Inventory and Patient Observer Scar Assessment Scale at baseline (approximately ≥85% of the total body surface area re-epithelialised), 1–2 weeks after baseline and 1-month after baseline. Psychometric properties measured included internal consistency, test–retest reliability, validity and responsiveness.ResultsEighty-six caregivers of mostly male children (55%), of a median age (IQR) of 1 year, 10 months (2 years, 1 month) and total body surface area burn of 1.5% (3.0%) were recruited. Over one third of participants were grafted and 15% had contractures or skin tightness at baseline. Internal consistency of ten item groups ranged from 0.73 to 0.96. Hypothesised correlations of changes in the BBSIP0–8 items with changes in criterion measures supported longitudinal validity (ρ ranging from ?0.73 to 0.68). The majority of item groups had acceptable reproducibility (ICC = 0.65–0.83). The responsiveness of five item groups was supported (AUC = 0.71–0.90).ConclusionThe psychometric properties tested support the use of the BBSIP0–8 as an evaluative measure of burn scar-related health-related quality of life for children aged below eight years in the early post-acute period of rehabilitation. Further investigation at longer time period after burn injury is indicated.  相似文献   
5.
6.
Purpose of the study: the aim of this study was to synthesize PFC fNIRS outcomes on the effects of cognitive tasks compared to resting/baseline tasks in healthy adults from studies utilizing a pre/post design.

Material and methods: original research studies were searched from seven databases (MEDLINE, EMBASE, CENTRAL, CINAHL, SCOPUS, PEDro and PubMed). Subsequently, two independent reviewers screened the titles and abstracts followed by full-text reviews to assess the studies' eligibility.

Results: eleven studies met the inclusion criteria and had data abstracted and quality assessed. Methodology varied considerably and yet cognitive tasks resulted in the ΔO2Hb increasing in 8 of the 11 and ΔHHb decreasing in 8 of 8 studies that reported this outcome. The cognitive tasks from 10 of the 11 studies were classified as “Working Memory” and “Verbal Fluency Tasks”.

Conclusions: although, the data comparison was challenging provided the heterogeneity in methodology, the results across studies were similar.  相似文献   

7.
8.
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