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   42786篇
  免费   3172篇
  国内免费   149篇
耳鼻咽喉   328篇
儿科学   1587篇
妇产科学   1205篇
基础医学   6221篇
口腔科学   503篇
临床医学   5148篇
内科学   8468篇
皮肤病学   797篇
神经病学   4655篇
特种医学   1027篇
外科学   4230篇
综合类   402篇
一般理论   33篇
预防医学   4564篇
眼科学   758篇
药学   2666篇
中国医学   73篇
肿瘤学   3442篇
  2023年   319篇
  2022年   243篇
  2021年   1136篇
  2020年   782篇
  2019年   1253篇
  2018年   1400篇
  2017年   955篇
  2016年   1067篇
  2015年   1170篇
  2014年   1650篇
  2013年   2345篇
  2012年   3591篇
  2011年   3659篇
  2010年   1997篇
  2009年   1775篇
  2008年   2959篇
  2007年   3159篇
  2006年   2988篇
  2005年   2866篇
  2004年   2549篇
  2003年   2375篇
  2002年   2290篇
  2001年   285篇
  2000年   213篇
  1999年   271篇
  1998年   339篇
  1997年   297篇
  1996年   208篇
  1995年   225篇
  1994年   186篇
  1993年   224篇
  1992年   125篇
  1991年   108篇
  1990年   86篇
  1989年   81篇
  1988年   92篇
  1987年   49篇
  1986年   57篇
  1985年   52篇
  1984年   63篇
  1983年   60篇
  1982年   60篇
  1981年   54篇
  1980年   56篇
  1979年   44篇
  1978年   45篇
  1977年   30篇
  1976年   21篇
  1975年   26篇
  1973年   25篇
排序方式: 共有10000条查询结果,搜索用时 156 毫秒
1.
2.
Smoking cessation reduces the risk of death, improves recovery, and reduces the risk of hospital readmission. Evidence and policy support hospital admission as an ideal time to deliver smoking-cessation interventions. However, this is not well implemented in practice. In this systematic review, the authors summarize the literature on smoking-cessation implementation strategies and evaluate their success to guide the implementation of best-practice smoking interventions into hospital settings. The CINAHL Complete, Embase, MEDLINE Complete, and PsycInfo databases were searched using terms associated with the following topics: smoking cessation, hospitals, and implementation. In total, 14,287 original records were identified and screened, resulting in 63 eligible articles from 56 studies. Data were extracted on the study characteristics, implementation strategies, and implementation outcomes. Implementation outcomes were guided by Proctor and colleagues' framework and included acceptability, adoption, appropriateness, cost, feasibility, fidelity, penetration, and sustainability. The findings demonstrate that studies predominantly focused on the training of staff to achieve implementation. Brief implementation approaches using a small number of implementation strategies were less successful and poorly sustained compared with well resourced and multicomponent approaches. Although brief implementation approaches may be viewed as advantageous because they are less resource-intensive, their capacity to change practice in a sustained way lacks evidence. Attempts to change clinician behavior or introduce new models of care are challenging in a short time frame, and implementation efforts should be designed for long-term success. There is a need to embrace strategic, well planned implementation approaches to embed smoking-cessation interventions into hospitals and to reap and sustain the benefits for people who smoke.  相似文献   
3.
Journal of Thrombosis and Thrombolysis - Over the last few years data from our group have indicated that α-synuclein is important in development of immune cells as well as potentially...  相似文献   
4.
Journal of Thrombosis and Thrombolysis - Alteplase treatment can cause a systemic coagulopathy although the incidence and contributory factors are unknown in pulmonary embolism (PE). Fixed-dosing...  相似文献   
5.
6.
7.
8.
9.
Now is an exciting era of development in immunotherapy checkpoint inhibitors and their effect on the treatment of NPC. While the general prognosis of R/M disease is poor, immunotherapy offers some promise in a malignancy associated with EBV and characterized by a peritumoural immune infiltrate. Our study aims to review past and on-going clinical trials of monoclonal antibody therapies against the checkpoint inhibitors (e.g. PD1 and CTLA-4), in R/M NPC. All randomized and nonrandomized controlled trials involving immune checkpoint inhibitor interventions for treatment of NPC were included in the study. We utilized a validated “risk of bias” tool to assess study quality. Four separate Phase I–II trials report the potential of PD1 inhibitor treatment for patients with NPC. Within the observed groups, camrelizumab combined with chemotherapy achieved an objective response in 91% of patients as first-line treatment for metastatic NPC (PFS 68% at 1-year) but this was associated with a high rate of grade >3 adverse events (87%; CTCAE version 4.03). The remaining three studies focused on recurrent NPC disease in patients who had received at least one line of prior chemotherapy. Within this group, camrelizumab monotherapy achieved an objective response in 34% of patients (PFS 27% at 1-year; range across all three studies 20.5–34%). No NPC trial has yet reported on specific outcomes for non-PD1 checkpoint inhibitors but 11 on-going studies include alternative targets (e.g. PD-L1/CTLA-4) as combination or monotherapy treatments. In considering checkpoint immunotherapies for NPC, initial results show promise for anti-PD1 interventions. Further phase I–III trials are in progress to clarify clinical outcomes, fully determine safety profiles, and optimize drug combinations and administration schedules.  相似文献   
10.
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