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   230391篇
  免费   11295篇
  国内免费   833篇
耳鼻咽喉   3241篇
儿科学   6821篇
妇产科学   5758篇
基础医学   31182篇
口腔科学   7929篇
临床医学   15631篇
内科学   56711篇
皮肤病学   7054篇
神经病学   19253篇
特种医学   5631篇
外国民族医学   30篇
外科学   29792篇
综合类   1180篇
一般理论   55篇
预防医学   20327篇
眼科学   4576篇
药学   15332篇
中国医学   927篇
肿瘤学   11089篇
  2023年   1313篇
  2022年   1962篇
  2021年   5551篇
  2020年   2945篇
  2019年   5231篇
  2018年   7497篇
  2017年   4693篇
  2016年   4775篇
  2015年   5245篇
  2014年   6943篇
  2013年   9923篇
  2012年   15571篇
  2011年   16205篇
  2010年   8725篇
  2009年   7237篇
  2008年   13362篇
  2007年   14086篇
  2006年   13246篇
  2005年   13186篇
  2004年   11830篇
  2003年   11127篇
  2002年   10426篇
  2001年   6203篇
  2000年   6679篇
  1999年   5425篇
  1998年   1631篇
  1997年   1237篇
  1996年   1121篇
  1995年   1002篇
  1994年   799篇
  1993年   714篇
  1992年   2414篇
  1991年   2174篇
  1990年   1978篇
  1989年   1703篇
  1988年   1500篇
  1987年   1444篇
  1986年   1390篇
  1985年   1257篇
  1984年   953篇
  1983年   814篇
  1979年   827篇
  1978年   585篇
  1975年   629篇
  1974年   704篇
  1973年   753篇
  1972年   636篇
  1971年   637篇
  1970年   613篇
  1969年   605篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
Introduction: The rising prevalence of musculoskeletal pathologies in developed countries has caused a dramatic impact on social welfare. Amidst these musculoskeletal pathologies is Rheumatoid arthritis (RA), a chronic systemic autoimmune disease that mostly affects the synovium. RA metabolic-associated alterations, including distorted adipokine production, enhance RA inflammatory environment. Among the altered adipokines, visfatin is particularly involved in RA inflammation and catabolism and stands out as an essential enzyme linked to critical cell features.

Areas covered: We discuss the potential mechanism supporting the contribution of visfatin to RA and the association between RA and obesity. We discuss the repurposing of cancer-tested drugs to inhibit visfatin in the context of RA. Additionally, we address the possibility of combining these drugs with current RA therapy. Finally, we explore the future of visfatin as an RA biomarker or therapeutic target.

Expert opinion: Inhibition of visfatin has become an interesting therapeutic approach for RA pathology. Such a feat has already been attained in oncology using small molecule inhibitors, which suggest that a similar course of action would be worth pursuing in the RA context. Visfatin will become an important biomarker and therapeutic target for RA.  相似文献   

92.
93.
The 2008 dioxin crisis occurred as a result of contamination of Irish pork. The event had significant implications for Ireland’s economy and the reputation of its agricultural industry, as well as raising concerns for human health. This study describes the results of a content analysis of Irish and UK newspaper coverage of the 2008 Irish dioxin crisis, as this is likely to provide insight into how public perceptions of this issue were shaped. Articles from 16 print publications were systematically sampled for the period December 2008 to February 2009. The resulting data set of 141 articles was examined using a coding protocol developed based on previous research and refined during piloting. Results indicated that the dioxin crisis was primarily portrayed by the media as an industry/economic crisis, dominant in 26.9% of articles in the sample. Within this dominant portrayal, the agricultural industry was frequently cited as being in crisis (42.6%); however, the implications of the crisis on the wider economic environment also received attention (17.7%). Differences between Irish and UK-based media were also examined, revealing that while the Irish media most frequently described the crisis in terms of its impact on the industry and economy, the UK media were more likely to portray the crisis as a risk to health. These dominant media messages and message framings have implications for the public understanding of the issue in each country and potential consequences regarding perception of the adequacy of existing food policy and regulatory oversight.  相似文献   
94.
95.
96.
97.
Trichotillomania is a form of traction alopecia resulting from repetitive and compulsive hair pulling and plucking. Trichotillomania and patchy alopecia areata may have similar clinical and dermoscopic features in some cases. On trichoscopic examination, the presence of black dots, coiled or hook hair, shafts of varying lengths with fraying or split ends (trichoptilosis), and an absence of exclamation mark hairs and yellow dots are suggestive of trichotillomania.  相似文献   
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.
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