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   193篇
  免费   7篇
儿科学   11篇
妇产科学   4篇
基础医学   25篇
口腔科学   5篇
临床医学   16篇
内科学   47篇
皮肤病学   4篇
神经病学   9篇
特种医学   3篇
外科学   17篇
综合类   11篇
预防医学   25篇
眼科学   2篇
药学   20篇
肿瘤学   1篇
  2023年   2篇
  2022年   3篇
  2021年   11篇
  2020年   8篇
  2019年   8篇
  2018年   13篇
  2017年   4篇
  2016年   2篇
  2014年   8篇
  2013年   8篇
  2012年   15篇
  2011年   17篇
  2010年   9篇
  2009年   6篇
  2008年   5篇
  2007年   5篇
  2006年   7篇
  2005年   2篇
  2004年   3篇
  2003年   5篇
  2002年   7篇
  2001年   2篇
  2000年   2篇
  1999年   3篇
  1998年   2篇
  1992年   2篇
  1991年   2篇
  1990年   2篇
  1989年   2篇
  1987年   3篇
  1984年   1篇
  1983年   3篇
  1982年   1篇
  1981年   1篇
  1979年   1篇
  1978年   2篇
  1976年   1篇
  1974年   1篇
  1972年   2篇
  1971年   2篇
  1970年   2篇
  1969年   2篇
  1968年   1篇
  1966年   2篇
  1965年   1篇
  1962年   1篇
  1961年   1篇
  1960年   1篇
  1958年   1篇
  1938年   1篇
排序方式: 共有200条查询结果,搜索用时 15 毫秒
1.
2.
3.
Recent research into the use of anabolic androgenic steroids (AAS) in fitness and strength training environments have revealed great variance in users’ approach to AAS use and more specifically their approach to health risks and desired objectives. However, there have only been few attempts to develop theoretical frameworks directed at conceptualising the variance in AAS use. In this paper, we propose a unified framework in the form of a typology, which concerns men’s general approach to AAS use. The typology is based on sociologist Max Weber’s method on the ideal typology. The work comes out of the authors’ own qualitative empirical research on male AAS users in fitness and strength training environments, but is also related to and draws on the international literature on the subject. The suggested typology consists of four ideal types: the Expert type, the Well-being type, the YOLO type and the Athlete type. The four types are developed around two overarching categories, namely users’ approach to risk and effectiveness. The typology outlines distinct and characteristic approaches to AAS use and can, thus, be employed by researchers as well as health professionals as a heuristic tool for investigation and explanation.  相似文献   
4.
5.
BackgroundIn Denmark, influenza surveillance is ensured by data capturing from existing population-based registers. Since 2017, point-of-care (POC) testing has been implemented outside the regional clinical microbiology departments (CMD).AimWe aimed to assess influenza laboratory results in view of the introduction of POC testing.MethodsWe retrospectively observed routine surveillance data on national influenza tests before and after the introduction of POC testing as available in the Danish Microbiological Database. Also, we conducted a questionnaire study among Danish CMD about influenza diagnostics.ResultsBetween the seasons 2014/15 and 2018/19, 199,744 influenza tests were performed in Denmark of which 44,161 were positive (22%). After the introduction of POC testing, the overall percentage of positive influenza tests per season did not decrease. The seasonal influenza test incidence was higher in all observed age groups. The number of operating testing platforms placed outside a CMD and with an instrument analytical time ≤ 3 h increased after 2017. Regionally, the number of tests registered as POC in the Danish Microbiological Database and the number of tests performed with an instrument analytical time ≤ 3 h or outside a CMD partially differed. Where comparable (71% of tests), the relative proportion of POC tests out of all tests increased from season 2017/18 to 2018/19. In both seasons, the percentage of positive POC tests resulted slightly lower than for non-POC tests.ConclusionPOC testing integrated seamlessly into national influenza surveillance. We propose the use of POC results in the routine surveillance of seasonal influenza.  相似文献   
6.
7.
The unique Duvernoy's secretion of the brown tree snake (Boiga irregularis)   总被引:1,自引:0,他引:1  
D K Vest  S P Mackessy  K V Kardong 《Toxicon》1991,29(4-5):532-535
Recently, bites by the colubrid Boiga irregularis (brown tree snake) in infants and young children on Guam have produced severe systemic reactions which bear some resemblance to classical manifestations of neurotoxic venom poisoning. This study demonstrates that the Duvernoy's secretion which elicits these reactions is a remarkably simple venom secretion with comparatively low toxicity and generally weak enzymatic activity. The intravenous LD50 for Swiss-Webster mice was approximately 80 mg/kg; significant neurotoxic manifestations were not observed in mouse trials. Deaths of lethally challenged mice occurred within minutes of injection, and appeared to result from cardiopulmonary crises. Duvernoy's secretion yields, protein content, enzyme activities, electrophoretic data and toxicity characteristics of the secretion are presented.  相似文献   
8.
D K Vest 《Toxicon》1987,25(2):175-184
Necrotic spider bites in the states of Washington, Oregon and Idaho, U.S.A., have become increasingly frequent during the past decade. The great majority of cases seen by physicians are tentatively diagnosed as 'brown recluse' spider bite on the basis of clinical manifestations. However, investigation of over 30 such cases from several northwest localities has revealed that Tegenaria agrestis, a spider introduced into the northwest U.S. from Europe, is almost invariably found at the locality where the bite probably occurred. Necrotic arachnidism was seen only in areas where populations of Tegenaria agrestis spiders were well established and did not occur where Tegenaria agrestis was absent. The geographical spread of Tegenaria agrestis spiders parallels the appearance of necrotic arachnidism in several areas. Evaluation of some individual cases strongly implicates Tegenaria agrestis as the responsible organism and Tegenaria agrestis is likely responsible for the majority of 'brown recluse' spider bites seen in the northwest U.S. Tegenaria agrestis should now be considered a species of clinical significance capable of producing marked dermal lesions and, not infrequently, severe toxicosis in humans. Case histories are presented and manifestations of poisoning are described.  相似文献   
9.
Recent federal policies and actions support the adoption of health information exchange (HIE) in order to improve healthcare by addressing fragmented personal health information. However, concerted efforts at facilitating HIE have existed for over two decades in this country. The lessons of these experiences include a recurrence of barriers and challenges beyond those associated with technology. Without new strategies, the current support and methods of facilitating HIE may not address these barriers.  相似文献   
10.
Part-time and job-share policies may allow pharmacy practice faculty members to achieve work/life balance while pursuing their professional goals. Precedent for alternative work schedules within the health professions community can be found throughout the literature; however, little is known about part-time roles in academic pharmacy. The design and implementation of 3 different alternative faculty appointments are described and department chair and faculty perspectives are shared. Teaching, service, and scholarship responsibilities, as well as outcomes before and after changes in appointment, are described. Advantages and disadvantages, including advice for other colleges of pharmacy, are presented. Alternate appointments may be a key factor in retaining highly qualified faculty members who continue to bring their expertise to teaching, precepting, and scholarship within a college or school of pharmacy.  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