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   4939篇
  免费   513篇
  国内免费   18篇
耳鼻咽喉   34篇
儿科学   119篇
妇产科学   182篇
基础医学   762篇
口腔科学   113篇
临床医学   538篇
内科学   1033篇
皮肤病学   70篇
神经病学   321篇
特种医学   209篇
外科学   657篇
综合类   76篇
一般理论   2篇
预防医学   521篇
眼科学   112篇
药学   335篇
中国医学   26篇
肿瘤学   360篇
  2023年   52篇
  2022年   31篇
  2021年   149篇
  2020年   95篇
  2019年   122篇
  2018年   145篇
  2017年   121篇
  2016年   117篇
  2015年   153篇
  2014年   203篇
  2013年   272篇
  2012年   398篇
  2011年   408篇
  2010年   218篇
  2009年   179篇
  2008年   315篇
  2007年   325篇
  2006年   291篇
  2005年   302篇
  2004年   288篇
  2003年   241篇
  2002年   212篇
  2001年   68篇
  2000年   46篇
  1999年   37篇
  1998年   39篇
  1997年   28篇
  1996年   27篇
  1995年   30篇
  1994年   25篇
  1993年   32篇
  1992年   27篇
  1991年   25篇
  1990年   30篇
  1989年   24篇
  1988年   16篇
  1987年   22篇
  1986年   24篇
  1985年   22篇
  1984年   37篇
  1983年   22篇
  1982年   23篇
  1981年   25篇
  1980年   24篇
  1979年   26篇
  1978年   20篇
  1975年   13篇
  1974年   16篇
  1973年   11篇
  1972年   14篇
排序方式: 共有5470条查询结果,搜索用时 343 毫秒
1.
2.
Respiratory cysts are benign lesions lined by normal respiratory epithelium. There are few reported cases localized to the orbit, while those of the eyelid are exceedingly rare. Respiratory cysts usually arise either from a non‐hereditary congenital malformation, where they are distinguished as choristomatous, or from trauma. Here, we report a case of a 53‐year‐old man who presented with a large right lower eyelid cyst that was histopathologically diagnosed as a respiratory cyst.  相似文献   
3.
Unpredictable hypertrophic scarring (HS) occurs after approximately 35% of all surgical procedures and causes significant physical and psychological complaints. Parallel to the need to understanding the mechanisms underlying HS formation, a prognostic tool is needed. The objective was to determine whether (systemic) immunological differences exist between patients who develop HS and those who develop normotrophic scars (NS) and to assess whether those differences can be used to identify patients prone to developing HS. A prospective cohort study with NS and HS groups in which (a) cytokine release by peripheral blood mononuclear cells (PBMC) and (b) the irritation threshold (IT) after an irritant (sodium lauryl sulphate) patch test was evaluated. Univariate regression analysis of PBMC cytokine secretion showed that low MCP‐1, IL‐8, IL‐18 and IL‐23 levels have a strong correlation with HS (P < .010‐0.004; AUC = 0.790‐0.883). Notably, combinations of two or three cytokines (TNF‐a, MCP‐1 and IL‐23; AUC: 0.942, Nagelkerke R2: 0.727) showed an improved AUC indicating a better correlation with HS than single cytokine analysis. These combination models produce good prognostic results over a broad probability range (sensitivity: 93.8%, specificity 86.7%, accuracy 90,25% between probability 0.3 and 0.7). Furthermore, the HS group had a lower IT than the NS group and an accuracy of 68%. In conclusion, very fundamental immunological differences exist between individuals who develop HS and those who do not, whereas the cytokine assay forms the basis of a predictive prognostic test for HS formation, the less invasive, easily performed irritant skin patch test is more accessible for daily practice.  相似文献   
4.
5.
6.
7.
The purposes of this pilot study were to identify and adapt instruments for future use in assessing diabetes self-management in a sample of Cuban Americans with Type 2 diabetes. Eight instruments were selected from the literature, translated into Spanish, and administered to a sample of 20 Cuban Americans with Type 2 diabetes. Psychometric properties were examined along with clarity of wording, cultural appropriateness, and ease of use. Reliability data were compared, when possible, with original scores generated with non-Cuban populations. Results indicated that reliability scores among populations were similar. Support for using these instruments in clinical practice to assess initial knowledge and beliefs about aspects of diabetes management and to monitor changes is provided.  相似文献   
8.
9.
The use of computer technology for patient education has increased in recent years. This article describes a study that measures the attitudes and perceptions of healthcare professionals and laypeople regarding the effectiveness of a multimedia computer, the Brain Injury Resource Center? (BIRC), as an educational tool. The study focused on three major themes: (a) usefulness of the information presented, (b) effectiveness of the multimedia touch-screen computer methodology, and (c) the appropriate time for making this resource available. This prospective study, conducted in an acute care medical center, obtained healthcare professionals' evaluations using a written survey and responses from patients with brain injury and their families during interviews. The findings have yielded excellent ratings as to the ease of understanding and usefulness of the BIRC. By using sight, sound, and touch, such a multimedia learning center has the potential to simplify patient and family education.  相似文献   
10.
Healthcare information systems (HISs) are often implemented to enhance the quality of care and the degree to which it is patient-centered, as well as to improve the efficiency and safety of services. However, the outcomes of HIS implementations have not met expectations. We set out to organize the knowledge gained in qualitative studies performed in association with HIS implementations and to use this knowledge to outline an updated structure for implementation planning. A multi-disciplinary team performed the analyses in order to cover as many aspects of the primary studies as possible. We found that merely implementing an HIS will not automatically increase organizational efficiency. Strategic, tactical, and operational actions have to be taken into consideration, including management involvement, integration in healthcare workflow, establishing compatibility between software and hardware and, most importantly, user involvement, education and training. The results should be interpreted as a high-order scheme, and not a predictive theory.  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