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   1343550篇
  免费   100405篇
  国内免费   4290篇
耳鼻咽喉   16861篇
儿科学   43912篇
妇产科学   36567篇
基础医学   198820篇
口腔科学   35983篇
临床医学   130957篇
内科学   259280篇
皮肤病学   26449篇
神经病学   112671篇
特种医学   48346篇
外国民族医学   366篇
外科学   184805篇
综合类   28907篇
现状与发展   1篇
一般理论   476篇
预防医学   115568篇
眼科学   29130篇
药学   99248篇
  6篇
中国医学   3172篇
肿瘤学   76720篇
  2021年   11083篇
  2019年   11852篇
  2018年   16543篇
  2017年   12453篇
  2016年   13414篇
  2015年   15391篇
  2014年   21111篇
  2013年   32511篇
  2012年   44895篇
  2011年   47497篇
  2010年   27399篇
  2009年   25221篇
  2008年   43234篇
  2007年   45618篇
  2006年   45687篇
  2005年   44157篇
  2004年   42105篇
  2003年   39963篇
  2002年   38738篇
  2001年   60901篇
  2000年   62556篇
  1999年   52328篇
  1998年   14662篇
  1997年   13335篇
  1996年   13182篇
  1995年   12519篇
  1994年   11712篇
  1993年   10977篇
  1992年   41604篇
  1991年   40790篇
  1990年   39467篇
  1989年   37360篇
  1988年   34606篇
  1987年   33707篇
  1986年   32169篇
  1985年   30649篇
  1984年   23053篇
  1983年   19604篇
  1982年   11772篇
  1979年   20815篇
  1978年   14824篇
  1977年   12069篇
  1976年   11886篇
  1975年   12114篇
  1974年   14802篇
  1973年   14475篇
  1972年   13358篇
  1971年   12422篇
  1970年   11486篇
  1969年   10411篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
The value of adding simeprevir (SMV) vs placebo (PBO) to peginterferon and ribavirin (PR) for treatment of chronic hepatitis C virus infection was examined using patient‐reported outcomes (PROs); further, concordance of PROs with virology endpoints and adverse events (AEs) was explored. Patients (= 768 SMV/PR,= 393 PBO/PR) rated fatigue (FSS), depressive symptoms (CES‐D) and functional impairment (WPAI: Hepatitis C Productivity, Daily Activity and Absenteeism) at baseline and throughout treatment in three randomised, double‐blind trials comparing the addition of SMV or PBO during initial 12 weeks of PR. PR was administered for 48 weeks (PBO group) and 24/48 weeks (SMV group) using a response‐guided therapy (RGT) approach. Mean PRO scores (except Absenteeism) worsened from baseline to Week 4 to the same extent in both groups but reverted after Week 24 for SMV/PR and only after Week 48 for PBO/PR. Accordingly, there was a significantly lower area under the curve (baseline–Week 60, AUC60) and fewer weeks with clinically important worsening of scores in the SMV/PR group at any time point. Incidences of patients with fatigue and anaemia AEs were similar in both groups, but FSS scores showed that clinically important increases in fatigue lasted a mean of 6.9 weeks longer with PBO/PR (P < 0.001). PRO score subgroup analysis indicated better outcomes for patients who met the criteria for RGT or achieved sustained virological response 12 weeks post‐treatment (SVR12); differences in mean PRO scores associated with fibrosis level were only observed with PBO/PR. Greater efficacy of SMV/PR enabled reduced treatment duration and reduced time with PR‐related AEs without adding to AE severity.  相似文献   
25.
Annals of Nuclear Medicine - The Response Evaluation Criteria In Solid Tumors (RECIST) is the most used radiological method for evaluating response after peptide receptor radionuclide therapy...  相似文献   
26.
27.
28.
In 1963, Goffman argued that forming a group based on shared stigma may provide benefits. However, there is no empirical research on whether perception that a separate, unique, coherent group exists (i.e., group entitativity) influences coping, such as educating others or secrecy, for the stigmatized individual or his or her spouse. Further, little is known about how spouses influence each other in terms of promoting the education of others about a stigmatizing condition, especially when it comes to the role of believing that stigma-based groups, to which they may both belong, exist. This study provides a step toward bridging this gap in the research by applying the label management model in efforts to understand coping for couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). This study included 50 married couples in which one spouse is diagnosed with genetic mutations leading to alpha-1 antitrypsin deficiency (AATD). We found that group entitativity related to those with AATD counterbalanced the influence of genetic stigma on spouses’ intentions to keep the diagnosis secret or to educate others about it. Intrapersonal and interpersonal influences appeared among spouses. Attention is needed on the power of creating groups for stigmatized persons and their relatives. Indeed, people live within a dynamic world of group entities, and multiple social identities including spousal and familial. While attention has been paid to the diffusion of stigmas to loved ones, less has been paid to the uplift of group entities for them.  相似文献   
29.
30.
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