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   271301篇
  免费   13453篇
  国内免费   782篇
耳鼻咽喉   3585篇
儿科学   7964篇
妇产科学   6974篇
基础医学   37421篇
口腔科学   8325篇
临床医学   19254篇
内科学   62794篇
皮肤病学   7782篇
神经病学   23051篇
特种医学   7133篇
外国民族医学   38篇
外科学   34678篇
综合类   1452篇
一般理论   83篇
预防医学   26302篇
眼科学   5470篇
药学   19424篇
中国医学   917篇
肿瘤学   12889篇
  2023年   1482篇
  2022年   2421篇
  2021年   5688篇
  2020年   3126篇
  2019年   5372篇
  2018年   8956篇
  2017年   5713篇
  2016年   5246篇
  2015年   5936篇
  2014年   7672篇
  2013年   10921篇
  2012年   17741篇
  2011年   18425篇
  2010年   9690篇
  2009年   8101篇
  2008年   15362篇
  2007年   15978篇
  2006年   15608篇
  2005年   15491篇
  2004年   14366篇
  2003年   13336篇
  2002年   12673篇
  2001年   7763篇
  2000年   8423篇
  1999年   6385篇
  1998年   1914篇
  1997年   1357篇
  1996年   1306篇
  1995年   1141篇
  1994年   949篇
  1993年   874篇
  1992年   2840篇
  1991年   2654篇
  1990年   2476篇
  1989年   2210篇
  1988年   1975篇
  1987年   1948篇
  1986年   1820篇
  1985年   1738篇
  1984年   1321篇
  1983年   1136篇
  1979年   1207篇
  1978年   833篇
  1975年   818篇
  1974年   1043篇
  1973年   999篇
  1972年   852篇
  1971年   820篇
  1970年   846篇
  1969年   802篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
101.

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   
102.
103.
104.
105.
Serum lactate is a non-specific marker of tissue hypoperfusion. Elevated serum lactate is used in the differential diagnosis of acute intestinal ischemia. Although this practice is controversial, in the absence of other validated markers lactate is still used because of its high sensitivity.We present the cases of two patients who developed acute mesenteric ischemia as a post-surgical complication. The patients reported moderate abdominal pain —a non-specific symptom in the postoperative context— and tests showed progressively increasing serum lactate levels, which facilitated suspicion and subsequent diagnostic confirmation through an imaging test.These cases highlight the physiopathological importance of lactate elevation in the perioperative context and of performing a differential diagnosis of its possible causes, including mesenteric ischemia. Although the outcome was negative in the first case, early suspicion allowed us to make an effective diagnosis and administer appropriate treatment in the second patient.  相似文献   
106.
107.
108.

Objective

To analyse and understand vaccination hesitancy discourses, particularly those of people who have decided not to vaccinate their sons and daughters.

Methods

Qualitative study of five individual interviews and two focus groups with people who chose not to vaccinate their children in the province of Granada (Spain).

Results

Mothers and fathers manifest a system of health beliefs different to the biomedical paradigm. From an ethical point of view, they justify their position based on the right to autonomy and responsibility for their decisions. Alleged specific reasons: they doubt administration of several vaccines simultaneously at an early age in a systematic way and without individualising each case; they fear adverse effects and do not understand the variations of the vaccination schedule.

Conclusions

These vaccination hesitancy discourses respond to the individual vs collective conflict; parents defend their right to bring up their children without any interference from the state and focus their responsibility on the individual welfare of their sons and daughters, regardless of the consequences that their actions might have on the collective. In their management of risks, they consider those derived from vaccination more relevant than the individual or collective consequences of not doing so. The vaccines generating most doubts are the more controversial ones within the scientific world. Transparency in communication of adverse effects; authorities respect for other health/disease concepts; banishment of the term “anti-vaccines” from the media and scientific vocabulary, and developing spaces for dialogue are bridges to be built.  相似文献   
109.
110.
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