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   1497298篇
  免费   109926篇
  国内免费   13937篇
耳鼻咽喉   21406篇
儿科学   42423篇
妇产科学   39992篇
基础医学   201862篇
口腔科学   42552篇
临床医学   132543篇
内科学   282132篇
皮肤病学   32076篇
神经病学   112690篇
特种医学   59774篇
外国民族医学   503篇
外科学   224695篇
综合类   66520篇
现状与发展   55篇
一般理论   446篇
预防医学   105942篇
眼科学   34918篇
药学   117342篇
  195篇
中国医学   15570篇
肿瘤学   87525篇
  2021年   14939篇
  2019年   12561篇
  2018年   16760篇
  2017年   14729篇
  2016年   15412篇
  2015年   19573篇
  2014年   26058篇
  2013年   35006篇
  2012年   47106篇
  2011年   50017篇
  2010年   32234篇
  2009年   29832篇
  2008年   44299篇
  2007年   46923篇
  2006年   46860篇
  2005年   44144篇
  2004年   40814篇
  2003年   39466篇
  2002年   38023篇
  2001年   66896篇
  2000年   67853篇
  1999年   57274篇
  1998年   15757篇
  1997年   14521篇
  1996年   13783篇
  1995年   12989篇
  1994年   12056篇
  1992年   43115篇
  1991年   41552篇
  1990年   40805篇
  1989年   39736篇
  1988年   37126篇
  1987年   36565篇
  1986年   35009篇
  1985年   33183篇
  1984年   24866篇
  1983年   21083篇
  1982年   12688篇
  1979年   23952篇
  1978年   17074篇
  1977年   14846篇
  1976年   13394篇
  1975年   15273篇
  1974年   18087篇
  1973年   17572篇
  1972年   16814篇
  1971年   15720篇
  1970年   14917篇
  1969年   14347篇
  1968年   13464篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
目的:对应用低分子肝素钙与奥扎格雷联合对患有脑血栓疾病的患者实施治疗的临床效果进行研究。方法整群选择在该院2012年12月—2014年12月就诊的患有脑血栓疾病的患者86例,随机分为对照组和治疗组,每组43例。采用奥扎格雷对对照组患者实施治疗;采用低分子肝素钙与奥扎格雷联合对治疗组患者实施治疗。对比神经功能缺损评分在药物治疗前后的变化幅度、脑神经功能恢复正常时间和脑血栓药物治疗计划实施总时间、脑血栓疾病药物治疗效果、用药期间的不良反应人数。结果治疗组患者神经功能缺损评分在药物治疗前后的变化幅度明显大于对照组;脑神经功能恢复正常时间(9.66±2.41)d和脑血栓药物治疗计划实施总时间(13.28±2.14)d明显短于对照组(13.62±3.47)、(17.39±3.20)d;脑血栓疾病药物治疗效果(总有效率90.6%)明显优于对照组(总有效率69.8%);用药期间的不良反应人数(1例)明显少于对照组(8例)。结论应用低分子肝素钙与奥扎格雷联合对患有脑血栓疾病的患者实施治疗的临床效果非常明显。  相似文献   
2.
3.
4.
5.
6.
7.
8.
9.
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   

10.

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   
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