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   1345941篇
  免费   103891篇
  国内免费   7004篇
耳鼻咽喉   18814篇
儿科学   45058篇
妇产科学   35866篇
基础医学   190518篇
口腔科学   34733篇
临床医学   120351篇
内科学   268378篇
皮肤病学   28760篇
神经病学   103847篇
特种医学   53551篇
外国民族医学   701篇
外科学   203211篇
综合类   38864篇
现状与发展   18篇
一般理论   379篇
预防医学   99877篇
眼科学   29687篇
药学   101920篇
  76篇
中国医学   6066篇
肿瘤学   76161篇
  2021年   11516篇
  2019年   11411篇
  2018年   15468篇
  2017年   11976篇
  2016年   12903篇
  2015年   15433篇
  2014年   21035篇
  2013年   29404篇
  2012年   40669篇
  2011年   43578篇
  2010年   26005篇
  2009年   24230篇
  2008年   39963篇
  2007年   42637篇
  2006年   42998篇
  2005年   41815篇
  2004年   39745篇
  2003年   38589篇
  2002年   37575篇
  2001年   65505篇
  2000年   68129篇
  1999年   58266篇
  1998年   16354篇
  1997年   15062篇
  1996年   15183篇
  1995年   14327篇
  1994年   13527篇
  1993年   12272篇
  1992年   45118篇
  1991年   43954篇
  1990年   42632篇
  1989年   40475篇
  1988年   37194篇
  1987年   36495篇
  1986年   33841篇
  1985年   32435篇
  1984年   24226篇
  1983年   20333篇
  1982年   11756篇
  1981年   10740篇
  1979年   21375篇
  1978年   14821篇
  1977年   12532篇
  1976年   11693篇
  1975年   12623篇
  1974年   14661篇
  1973年   14117篇
  1972年   12944篇
  1971年   11729篇
  1970年   11050篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
朱忆  张继春 《护理学杂志》2019,34(22):61-63
目的了解护理人员的科研能力与职业认同现状及其相关性,为采取针对性措施提高护理人员科研能力,增强其职业认同感提供参考。方法采用护理人员科研能力自评量表与护士职业认同评价量表,对350名护理人员进行调查。结果护理人员科研能力及科研实践能力、专业与发现问题能力、沟通协作能力3个维度得分率分别为37.50%、25.00%、50.00%、50.00%,职业认同评价量表总均分为5.52分。护理科研能力与职业认同呈正相关(P0.01)。结论护理人员具有较高的职业认同,其科研能力尚待加强,科研能力与职业认同呈正相关。管理者应注重护理人员科研能力的培养,从而提高其职业认同。  相似文献   
92.
93.
94.
95.
96.
97.
98.

Aim

The purpose of this study is to find out whether telephone referral from Primary Health Care to Internal Medicine Consult manages to reduce waiting days as compared to traditional referral. This study also aims to know how acceptable is the telephone referral to general practitioners and their patients.

Design

No blind randomized controlled clinical trial.

Setting

Northern Huelva Health District.

Participants

154 patients.

Interventions

Patients referrals from intervention clinicians were sent via telephone consultation, whereas patients referrals from control clinicians were sent by traditional via.

Measurements

Number of days from referral request to Internal Medicine Consult. Number of telephone and traditional referrals. Number of doctors and patients denied. Denial reasons.

Results

A statistically significant difference was found between groups, with an average of 27 (21-34) days. Among General Practitioners, 8 of the first 58 total doctors after randomization and, subsequently, 6 of the 20 doctors of the test group refused to engage in the trial because they considered “excessive time and effort consuming”. 50% of patients referred by the 14 General Practitioners finally randomized to the intervention group were denied referral by telephone due to patient's complexity.

Conclusions

Telephone referral significantly reduces waiting days for Internal Medicine consult. This type of referral did not mean an “excessive time and effort consuming” to General Practitioners and was not all that beneficial to complex patients  相似文献   
99.
100.
Postoperative pulmonary complications are associated with an increase in mortality, morbidity and healthcare utilisation. The Agency for Healthcare Research and Quality recommends risk assessment for postoperative respiratory complications in patients undergoing surgery. In this hospital registry study of adult patients undergoing non-cardiac surgery between 2005 and 2017 at two independent healthcare networks, a prediction instrument for early postoperative tracheal re-intubation was developed and externally validated. This was based on the development of the Score for Prediction Of Postoperative Respiratory Complications. For predictor selection, stepwise backward logistic regression and bootstrap resampling were applied. Development and validation cohorts were represented by 90,893 patients at Partners Healthcare and 67,046 patients at Beth Israel Deaconess Medical Center, of whom 699 (0.8%) and 587 (0.9%) patients, respectively, had their tracheas re-intubated. In addition to five pre-operative predictors identified in the Score for Prediction Of Postoperative Respiratory Complications, the final model included seven additional intra-operative predictors: early post-tracheal intubation desaturation; prolonged duration of surgery; high fraction of inspired oxygen; high vasopressor dose; blood transfusion; the absence of volatile anaesthetic use; and the absence of lung-protective ventilation. The area under the receiver operating characteristic curve for the new score was significantly greater than that of the original Score for Prediction Of Postoperative Respiratory Complications (0.84 [95%CI 0.82–0.85] vs. 0.76 [95%CI 0.75–0.78], respectively; p < 0.001). This may allow clinicians to develop and implement strategies to decrease the risk of early postoperative tracheal re-intubation.  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