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   96277篇
  免费   4748篇
  国内免费   350篇
耳鼻咽喉   1797篇
儿科学   3327篇
妇产科学   2004篇
基础医学   12514篇
口腔科学   3108篇
临床医学   6434篇
内科学   23242篇
皮肤病学   3222篇
神经病学   7864篇
特种医学   2332篇
外国民族医学   1篇
外科学   12032篇
综合类   640篇
一般理论   28篇
预防医学   9308篇
眼科学   2181篇
药学   6482篇
  1篇
中国医学   583篇
肿瘤学   4275篇
  2023年   690篇
  2022年   1465篇
  2021年   3247篇
  2020年   1529篇
  2019年   2981篇
  2018年   3800篇
  2017年   2268篇
  2016年   2107篇
  2015年   2189篇
  2014年   3165篇
  2013年   4650篇
  2012年   6883篇
  2011年   7498篇
  2010年   4062篇
  2009年   3157篇
  2008年   5542篇
  2007年   5722篇
  2006年   5307篇
  2005年   5379篇
  2004年   4888篇
  2003年   4603篇
  2002年   4170篇
  2001年   2613篇
  2000年   3091篇
  1999年   2118篇
  1998年   700篇
  1997年   591篇
  1996年   455篇
  1995年   413篇
  1994年   337篇
  1993年   288篇
  1992年   575篇
  1991年   486篇
  1990年   457篇
  1989年   383篇
  1988年   383篇
  1987年   324篇
  1986年   285篇
  1985年   288篇
  1984年   195篇
  1983年   185篇
  1982年   153篇
  1981年   159篇
  1980年   130篇
  1979年   156篇
  1978年   137篇
  1976年   90篇
  1974年   112篇
  1971年   94篇
  1969年   90篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
Most of the patients who overcome the SARS-CoV-2 infection do not present complications and do not require a specific follow-up, but a significant proportion (especially those with moderate / severe clinical forms of the disease) require clinicalradiological follow-up. Although there are hardly any references or clinical guidelines regarding the long-term follow-up of post-COVID-19 patients, radiological exams are being performed and monographic surveillance consultations are being set up in most of the hospitals to meet their needs. The purpose of this work is to share our experience in the management of the post-COVID-19 patient in two institutions thathave had a high incidence of COVID-19 and to propose general follow-uprecommendations from a clinical and radiological perspective.  相似文献   
32.
33.
34.
35.

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   
36.
37.
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   
38.

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   
39.
40.
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