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   402619篇
  免费   26999篇
  国内免费   2947篇
耳鼻咽喉   5458篇
儿科学   9075篇
妇产科学   10585篇
基础医学   55858篇
口腔科学   12331篇
临床医学   32402篇
内科学   83457篇
皮肤病学   9012篇
神经病学   29138篇
特种医学   14738篇
外国民族医学   82篇
外科学   64422篇
综合类   10541篇
现状与发展   1篇
一般理论   74篇
预防医学   19014篇
眼科学   10339篇
药学   32816篇
  2篇
中国医学   2288篇
肿瘤学   30932篇
  2021年   3231篇
  2019年   3326篇
  2018年   5185篇
  2017年   3906篇
  2016年   4071篇
  2015年   4640篇
  2014年   6569篇
  2013年   8402篇
  2012年   11664篇
  2011年   11889篇
  2010年   7180篇
  2009年   6666篇
  2008年   10855篇
  2007年   11676篇
  2006年   11507篇
  2005年   10501篇
  2004年   10009篇
  2003年   9608篇
  2002年   9197篇
  2001年   29067篇
  2000年   29539篇
  1999年   24307篇
  1998年   5420篇
  1997年   4444篇
  1996年   4005篇
  1995年   3651篇
  1994年   3259篇
  1993年   2973篇
  1992年   16433篇
  1991年   15179篇
  1990年   14493篇
  1989年   14275篇
  1988年   12872篇
  1987年   12327篇
  1986年   11362篇
  1985年   10589篇
  1984年   7099篇
  1983年   5769篇
  1982年   2829篇
  1981年   2306篇
  1979年   5610篇
  1978年   3418篇
  1977年   3043篇
  1975年   2688篇
  1974年   3132篇
  1973年   2919篇
  1972年   2877篇
  1971年   2817篇
  1970年   2538篇
  1969年   2576篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
35.
36.
37.
PurposeOur purpose was to determine the effect of chemoradiotherapy (CRT) on patient-reported quality of life (QOL) for patients with intact pancreas cancer.Methods and MaterialsWe reviewed a prospective QOL registry for patients with intact, clinically localized pancreatic ductal adenocarcinoma treated with CRT between June 2015 and November 2018. QOL was assessed pre-CRT (immediately before CRT, after neoadjuvant chemotherapy) and at the completion of CRT with the Functional Assessment of Cancer Therapy-Hepatobiliary (FACT-Hep) and its component parts: FACT-General (FACT-G) and hepatobiliary cancer subscore (HCS). A minimally important difference from pre-CRT was defined as ≥ 6, 5, and 8 points for FACT-G, HCS, and FACT-Hep, respectively.ResultsOf 157 patients who underwent CRT, 100 completed both pre- and post-CRT surveys and were included in the primary analysis. Median age at diagnosis was 65 years (range, 23-90). National Comprehensive Cancer Network resectability status was resectable (3%), borderline resectable (40%), or locally advanced (57%). Folinic acid, 5-fluorouracil, irinotecan, and oxaliplatin (FOLFIRINOX) (75%) or gemcitabine and nab-paclitaxel (42%) were given for a median of 6 cycles (range, 0-42) before CRT. Radiation therapy techniques included 3-dimensional conformal (22%), intensity modulated photon (55%), and intensity modulated proton (23%) radiation therapy to a median dose of 50 Gy (range, 36-62.5). Concurrent chemotherapy was most commonly capecitabine (82%). Sixty-three patients (63%) had surgery after CRT. The mean decline in FACT-G, HCS subscale, and FACT-Hep from pre- to post-CRT was 3.5 (standard deviation [SD], 13.7), 1.7 (SD 7.8), and 5.2 (SD 19.4), respectively. Each of these changes were statistically significant, but did not meet the minimally important difference threshold. Pancreatic head tumor location was associated with decline in FACT-Hep. Nausea was the toxicity with the greatest increase from pre- to post-CRT by both physician-assessment and patient-reported QOL.ConclusionsFor patients with intact pancreatic adenocarcinoma, modern CRT is well tolerated with minimal decline in QOL during treatment.  相似文献   
38.
39.
40.
Background: Physicians have long had patients whom they have labeled “difficult”, but little is known about how medical students perceive difficult encounters with patients.

Methods: In this study, we analyzed 134 third year medical students’ reflective essays written over an 18-month period about difficult student–patient encounters. We used a qualitative computerized software program, Atlas.ti to analyze students’ observations and reflections.

Results: Main findings include that students described patients who were angry and upset; noncompliant with treatment plans; discussed “nonmedical” problems; fearful, worried, withdrawn, or “disinterested” in their health. Students often described themselves as anxious, uncertain, confused, and frustrated. Nevertheless, they saw themselves behaving in empathic and patient-centered ways while also taking refuge in “standard” behaviors not necessarily appropriate to the circumstances. Students rarely mentioned receiving guidance from attendings regarding how to manage these challenging interactions.

Conclusions: These third-year medical students recognized the importance of behaving empathically in difficult situations and often did so. However, they often felt overwhelmed and frustrated, resorting to more reductive behaviors that did not match the needs of the patient. Students need more guidance from attending physicians in order to approach difficult interactions with specific problem-solving skills while maintaining an empathic, patient-centered context.  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