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   5281篇
  免费   293篇
  国内免费   60篇
耳鼻咽喉   52篇
儿科学   37篇
妇产科学   27篇
基础医学   622篇
口腔科学   445篇
临床医学   547篇
内科学   311篇
皮肤病学   76篇
神经病学   258篇
特种医学   809篇
外科学   575篇
综合类   809篇
预防医学   498篇
眼科学   205篇
药学   179篇
  8篇
中国医学   59篇
肿瘤学   117篇
  2024年   7篇
  2023年   123篇
  2022年   199篇
  2021年   250篇
  2020年   251篇
  2019年   172篇
  2018年   150篇
  2017年   133篇
  2016年   177篇
  2015年   192篇
  2014年   347篇
  2013年   350篇
  2012年   311篇
  2011年   332篇
  2010年   272篇
  2009年   285篇
  2008年   227篇
  2007年   229篇
  2006年   218篇
  2005年   201篇
  2004年   168篇
  2003年   159篇
  2002年   88篇
  2001年   80篇
  2000年   62篇
  1999年   63篇
  1998年   55篇
  1997年   53篇
  1996年   38篇
  1995年   48篇
  1994年   42篇
  1993年   26篇
  1992年   38篇
  1991年   28篇
  1990年   20篇
  1989年   17篇
  1988年   19篇
  1987年   15篇
  1986年   18篇
  1985年   33篇
  1984年   25篇
  1983年   18篇
  1982年   15篇
  1981年   11篇
  1979年   11篇
  1978年   10篇
  1977年   10篇
  1976年   8篇
  1974年   8篇
  1973年   6篇
排序方式: 共有5634条查询结果,搜索用时 31 毫秒
1.
2.
3.
4.
5.
6.

Background Context

Long-term follow-up of patient-reported outcome measures (PROM) is essential in both modern spinal care and research. Lack of time and staff are commonly reported barriers to implementing long-term follow-up of PROM. Automated and digital follow-up systems for PROM collection are seeing widespread use, yet their validity and comparative effectiveness have never been evaluated.

Purpose

The present study aimed to assess the validity of digital follow-up systems in comparison with the conventional paper-based follow-up (PB-FU).

Study Design

This is a retrospective analysis of prospectively collected double follow-up data.

Patient Sample

Patients who underwent lumbar spinal fusion for spondylolisthesis or degenerative disc disease between 2013 and 2016 were included in the study.

Outcome Measures

The study determined the Oswestry Disability Index (ODI) and Numeric Rating Scale (NRS) for back and leg pain severity at baseline, 6 weeks, 12 months, and 24 months.

Materials and Methods

After lumbar spinal fusion surgery, a double follow-up of PROM was carried out by conventional PB-FU during clinical visits, while simultaneously completing an automatically dispatched digital follow-up questionnaire. As the primary end point, we assessed the intraindividual discrepancy in PROM between PB-FU and automated digital follow-up (AD-FU).

Results

Forty patients completed all parts of the dual follow-up trajectory and were analyzed. We detected no discrepancy in ODI or NRS for back and leg pain severity at any of the baseline, 6-week, 12-month, or 24 month follow-ups (all p>.05). This was confirmed in a sensitivity analysis.

Conclusions

In an analysis of dual paper-based and digital follow-up after lumbar fusion surgery, patients report highly similar values using either method of follow-up. It appears that AD-FU without incentives produces lower response rates. To reassess the validity of these systems for data collection in spinal patient care, a prospective validation with higher statistical power is warranted.  相似文献   
7.
This article examines self-representations in a social media campaign against the discrimination of people with disabilities. We focus specifically on how these representations are related to various narratives and discourses, and in what ways the representations either adhere to or challenge normative discourses, or whether they offer counter-discourses. Considering that our cultural assumptions are influenced by the representations we are exposed to, we also discuss the possible potential of self-representations for the audience of the campaign. The empirical material consists of a digital activism campaign conducted on Instagram in Sweden that was constructed through self-representations (photos and short texts). The study combines discourse analysis and visual analysis with focus on how the persons present themselves in the campaign, how disability is mentioned and/or displayed, and how a presentation adheres to or challenges a model of understanding disability, such as the medical or social models. We found a diverse set of claims, all with the common goal of acknowledging discrimination, in order to make it visible and bring about change. The narratives identified indicate a variety of strategies for understanding disability and various styles that people adopt to relate to established discourses on disabilities. Through this campaign, the bloggers could find and provide support, but they also took the stage by requesting that the audience listen. The campaign examined in this study can be further understood as an effort and a step towards increased visibility and politicization of disability.  相似文献   
8.
9.
根据医学摄影不同拍摄对象,结合各种光源特点,介绍了用光的一般方法和掌握的基本原则,对物体的反光控制、透明物体内部结构与质感的表现等难点问题进行了研讨,并对荧光摄影作了简要介绍。  相似文献   
10.
本文提出了我国医疗器械产业中数字化技术发展中存在的主要问题,并分析了问题产生的原因。  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