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   2373635篇
  免费   177577篇
  国内免费   5953篇
耳鼻咽喉   32669篇
儿科学   80061篇
妇产科学   64775篇
基础医学   342672篇
口腔科学   64165篇
临床医学   221446篇
内科学   462769篇
皮肤病学   49463篇
神经病学   192830篇
特种医学   90003篇
外国民族医学   913篇
外科学   345998篇
综合类   51963篇
现状与发展   2篇
一般理论   830篇
预防医学   193090篇
眼科学   52614篇
药学   175583篇
  7篇
中国医学   5096篇
肿瘤学   130216篇
  2019年   19265篇
  2018年   26955篇
  2017年   20268篇
  2016年   22112篇
  2015年   25299篇
  2014年   35156篇
  2013年   53962篇
  2012年   74337篇
  2011年   78897篇
  2010年   46419篇
  2009年   43376篇
  2008年   73398篇
  2007年   78087篇
  2006年   78403篇
  2005年   76015篇
  2004年   73287篇
  2003年   70424篇
  2002年   68389篇
  2001年   108192篇
  2000年   111862篇
  1999年   94587篇
  1998年   27036篇
  1997年   24370篇
  1996年   24393篇
  1995年   23206篇
  1994年   21917篇
  1993年   20438篇
  1992年   75711篇
  1991年   74175篇
  1990年   71923篇
  1989年   68533篇
  1988年   63397篇
  1987年   62226篇
  1986年   58658篇
  1985年   56116篇
  1984年   42380篇
  1983年   35904篇
  1982年   21306篇
  1981年   19221篇
  1979年   38162篇
  1978年   26948篇
  1977年   22457篇
  1976年   21514篇
  1975年   22654篇
  1974年   27063篇
  1973年   26316篇
  1972年   24246篇
  1971年   22325篇
  1970年   20938篇
  1969年   18986篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
Objectives: The steeling effect suggests that early-life adversity can have a beneficial impact later in life. However, little is known about its underlying mechanisms and long-term outcomes . The study aimed to examine the role of early-life adversity (ELA) on successful aging, and whether this relationship can be explained by mental and physical health.

Method: Socio-demographics, early-life adversity (ELA), individual quality of life (iQoL), and mental and physical health of 270 individuals (Mage = 66.82 years, 71.5% female) were assessed. Polynomial regressions and mediation analyses were conducted.

Results: Significant inverse U-shaped associations were found between ELA and iQoL (β = ?.59, p = .005) and between ELA and mental health (β = ?.64, p = .002), but not between ELA and physical health. Furthermore, mental health significantly mediated the relationship between ELA and iQoL (b = ?.84, BCa CI [?1.66, ?.27]).

Conclusion: Highest level of individual quality of life (i.e. successful aging) was related to a moderate amount of ELA. Additionally, mental health significantly mediated this relationship. These findings suggest that some amount of ELA could be beneficial for successful aging. Resource-focused interventions are needed to improve health and promote successful aging for an underdetected, at-risk subgroup with low early-life adversity.  相似文献   

9.

Introduction

Physician communication impacts patient outcomes. However, communication skills, especially around difficult conversations, remain suboptimal, and there is no clear way to determine the validity of entrustment decisions. The aims of this study were to 1) describe the development of a simulation-based mastery learning (SBML) curriculum for breaking bad news (BBN) conversation skills and 2) set a defensible minimum passing standard (MPS) to ensure uniform skill acquisition among learners.

Innovation

An SBML BBN curriculum was developed for fourth-year medical students. An assessment tool was created to evaluate the acquisition of skills involved in a BBN conversation. Pilot testing was completed to confirm improvement in skill acquisition and set the MPS.

Outcomes

A BBN assessment tool containing a 15-item checklist and six scaled items was developed. Students' checklist performance improved significantly at post-test compared to baseline (mean 65.33%, SD = 12.09% vs mean 88.67%, SD = 9.45%, P < 0.001). Students were also significantly more likely to have at least a score of 4 (on a five-point scale) for the six scaled questions at post-test. The MPS was set at 80%, requiring a score of 12 items on the checklist and at least 4 of 5 for each scaled item. Using the MPS, 30% of students would require additional training after post-testing.

Comments

We developed a SBML curriculum with a comprehensive assessment of BBN skills and a defensible competency standard. Future efforts will expand the mastery model to larger cohorts and assess the impact of rigorous education on patient care outcomes.  相似文献   
10.
Abstract

Objectives: This study examined word use as an indicator of interpersonal positive reframing in daily conversations of couples coping with breast cancer and as a predictor of stress.

Design: The Electronically Activated Recorder (EAR) and Linguistic Inquiry and Word Count (LIWC) were used to examine naturally occurring word use conceptually linked to positive reframing (positive emotion, negative emotion, and cognitive processing words).

Sample: Fifty-two couples coping with breast cancer.

Methods: Couples wore the EAR, a device participants wear, that audio-recorded over one weekend (>16,000 sound files), and completed self-reports of positive reframing (COPE) and stress (Perceived Stress Scale). LIWC, a software program, measured word use.

Findings: Both partners’ word use (i.e., positive emotion and cognitive processing words) was associated with their own reported positive reframing, and spouses’ word use was also indicative of patients’ positive reframing. Results also revealed that, in general, words indicating positive reframing predicted lower levels of stress.

Conclusions: Findings supported the hypothesis that partners—and particularly spouses of breast cancer patients—may assist each other’s coping by positively reframing the cancer experience and other negative experiences in conversation.  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