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   8824篇
  免费   1175篇
  国内免费   110篇
耳鼻咽喉   116篇
儿科学   323篇
妇产科学   184篇
基础医学   1172篇
口腔科学   256篇
临床医学   1036篇
内科学   2389篇
皮肤病学   206篇
神经病学   576篇
特种医学   334篇
外科学   871篇
综合类   323篇
一般理论   4篇
预防医学   921篇
眼科学   115篇
药学   798篇
中国医学   13篇
肿瘤学   472篇
  2021年   88篇
  2020年   88篇
  2019年   138篇
  2018年   142篇
  2017年   129篇
  2016年   153篇
  2015年   177篇
  2014年   210篇
  2013年   285篇
  2012年   374篇
  2011年   444篇
  2010年   236篇
  2009年   223篇
  2008年   320篇
  2007年   411篇
  2006年   396篇
  2005年   409篇
  2004年   359篇
  2003年   321篇
  2002年   321篇
  2001年   307篇
  2000年   302篇
  1999年   239篇
  1998年   143篇
  1997年   110篇
  1996年   118篇
  1995年   124篇
  1994年   108篇
  1993年   106篇
  1992年   206篇
  1991年   201篇
  1990年   183篇
  1989年   186篇
  1988年   188篇
  1987年   181篇
  1986年   199篇
  1985年   176篇
  1984年   143篇
  1983年   102篇
  1982年   94篇
  1981年   85篇
  1980年   77篇
  1979年   123篇
  1978年   81篇
  1977年   79篇
  1976年   76篇
  1975年   74篇
  1974年   84篇
  1973年   89篇
  1971年   67篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
ObjectiveThis open-label, controlled, randomized study assessed the safety, tolerability, and efficacy of StrataGraft tissue compared to autograft in the treatment of deep partial-thickness (DPT) burns.MethodsThirty subjects with DPT thermal burns (3%–43% total body surface area) were treated with StrataGraft tissue as follows: cohort 1, ≤220 cm2 refrigerated tissue; cohort 2, ≤440 cm2 refrigerated tissue; and cohort 3, ≤440 cm2 cryopreserved tissue. On each subject, two comparable areas of DPT burn were randomized to receive StrataGraft tissue or autograft. Coprimary end points were the percent area of the StrataGraft tissue treatment site undergoing salvage autografting by Day 28 and wound closure of treatment sites by 3 months.ResultsBy Day 28, no StrataGraft tissue treatment sites underwent autografting. By 3 months, 93% and 100% of the StrataGraft tissue and autograft treatment sites achieved complete wound closure, respectively. No significant differences in observer total and overall opinion POSAS scores between StrataGraft tissue and autograft treatment sites were observed at any timepoint. The most common adverse event was pruritus (17%).ConclusionsStrataGraft tissue treatment of DPT thermal burns reduced the need for autograft, resulted in wound closure and treatment-site cosmesis comparable to that of autograft, and was well tolerated.  相似文献   
2.
3.
This paper describes an innovative teaching strategy and opportunity to foster student resilience and enhance interprofessional collaboration among nursing and social work students, during a Study Abroad Interprofessional Education (IPE) Experience, using a reflective practice framework. This Study Abroad IPE Experience was an opportunity to capitalize on IPE teamwork, communication, and collaboration with the incorporation of reflective journaling as both an evaluative tool for students and faculty and as a mechanism for promoting self-awareness and enhanced mental wellbeing.  相似文献   
4.
5.
6.
7.
Journal of Thrombosis and Thrombolysis - Standard fixed-dose enoxaparin dosing regimens may not provide adequate prophylaxis against venous thromboembolism among obese hospitalized patients. While...  相似文献   
8.
9.
Atypical EEG patterns not consistent with standard sleep staging criteria have been observed in medical intensive care unit (ICU) patients. Our aim was to examine the relationship between sleep architecture and sedation in critically ill mechanically ventilated patients pre‐ and post‐extubation. We performed a prospective observational repeated measures study where 50 mechanically ventilated patients with 31 paired analyses were examined at an academic medical centre. The sleep efficiency was 58.3 ± 25.4% for intubated patients and 45.6 ± 25.4% for extubated patients (p = .02). Intubated patients spent 76.33 ± 3.34% of time in non‐rapid eye movement (NREM) sleep compared to 64.66 ± 4.06% of time for extubated patients (p = .02). REM sleep constituted 1.36 ± 0.67% of total sleep time in intubated patients and 2.06 ± 1.09% in extubated patients (p = .58). Relative sleep atypia was higher in intubated patients compared to extubated patients (3.38 ± 0.87 versus 2.79 ± 0.42; p < .001). Eleven patients were sedated with propofol only, 18 patients with fentanyl only, 11 patients with fentanyl and propofol, and 10 patients had no sedation. The mean sleep times on “propofol”, “fentanyl”, “propofol and fentanyl,” and “no sedation” were 6.54 ± 0.64, 4.88 ± 0.75, 6.20 ± 0.75 and 4.02 ± 0.62 hr, respectively. The sigma/alpha values for patients on “propofol”, “fentanyl”, “propofol and fentanyl” and “no sedation” were 0.69 ± 0.04, 0.54 ± 0.01, 0.62 ± 0.02 and 0.57 ± 0.02, respectively. Sedated patients on mechanical ventilation had higher sleep efficiency and more atypia compared to the same patients following extubation. Propofol was associated with higher sleep duration and less disrupted sleep architecture compared to fentanyl, propofol and fentanyl, or no sedation.  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