全文获取类型
收费全文 | 748篇 |
免费 | 41篇 |
国内免费 | 2篇 |
专业分类
儿科学 | 8篇 |
妇产科学 | 9篇 |
基础医学 | 73篇 |
口腔科学 | 23篇 |
临床医学 | 58篇 |
内科学 | 161篇 |
皮肤病学 | 6篇 |
神经病学 | 133篇 |
特种医学 | 18篇 |
外科学 | 75篇 |
综合类 | 4篇 |
预防医学 | 99篇 |
眼科学 | 10篇 |
药学 | 28篇 |
肿瘤学 | 86篇 |
出版年
2024年 | 2篇 |
2023年 | 15篇 |
2022年 | 18篇 |
2021年 | 26篇 |
2020年 | 17篇 |
2019年 | 29篇 |
2018年 | 31篇 |
2017年 | 16篇 |
2016年 | 18篇 |
2015年 | 20篇 |
2014年 | 26篇 |
2013年 | 45篇 |
2012年 | 69篇 |
2011年 | 64篇 |
2010年 | 21篇 |
2009年 | 23篇 |
2008年 | 53篇 |
2007年 | 39篇 |
2006年 | 42篇 |
2005年 | 40篇 |
2004年 | 25篇 |
2003年 | 26篇 |
2002年 | 22篇 |
2001年 | 6篇 |
2000年 | 4篇 |
1999年 | 11篇 |
1998年 | 5篇 |
1997年 | 4篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 11篇 |
1991年 | 5篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1986年 | 4篇 |
1985年 | 5篇 |
1984年 | 5篇 |
1983年 | 6篇 |
1982年 | 2篇 |
1980年 | 3篇 |
1979年 | 3篇 |
1977年 | 1篇 |
1976年 | 2篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1972年 | 1篇 |
1968年 | 2篇 |
排序方式: 共有791条查询结果,搜索用时 15 毫秒
11.
Di Rienzo Alessandro Colasanti Roberto Gladi Maurizio Dobran Mauro Della Costanza Martina Capece Mara Veccia Salvatore Iacoangeli Maurizio 《Neurosurgical review》2021,44(3):1523-1532
Neurosurgical Review - The optimal management of cranioplasty infections remains a matter of debate. Most authors have suggested that the infected bone/implant removal is mandatory, combined with... 相似文献
12.
13.
Despite the fact that plants have played an important role in midwifery in many cultures, there are very few in-depth studies on the plants traditionally used by midwives. The aim of this study is to analyse the perceptions and the uses of medicinal plants for reproductive health among indigenous midwives in the city of Otavalo, Ecuador. The article also aims to analyse the perceptions of traditional midwives regarding allopathic drugs for reproductive health and their possible overlapping uses of medicinal plants and allopathic drugs. The data are drawn from an ethnographic study carried out in Ecuador. In total, 20 traditional midwives have been interviewed. Individual and in-depth interviews also took place with a sample of 35 women as well as with five nurses and two doctors working at San Luis Hospital in Otavalo. 相似文献
14.
15.
16.
17.
Impact of plasma of argon cleaning treatment on implant abutments in patients with a history of periodontal disease and thin biotype: radiographic results at 24‐month follow‐up of a RCT
下载免费PDF全文
![点击此处可从《Clinical oral implants research》网站下载免费的PDF全文](/ch/ext_images/free.gif)
18.
Emanueli C Salis MB Stacca T Pinna A Gaspa L Spano A Madeddu P 《American journal of hypertension》2002,15(5):410-415
BACKGROUND: Angiotensin converting enzyme (ACE) inhibition exerts positive effects on the microvasculature of normotensive animals, although this concept is not universally accepted. Recently, ACE inhibitors have been suggested to be useful for rescue in peripheral ischemia. METHODS: We investigated whether chronic treatment with the ACE inhibitor ramipril may have a positive impact on the defective healing response to ischemia that is typical of spontaneously hypertensive rats (SHR). Unilateral limb ischemia was induced in 20-week-old SHR by surgically removing the left femoral artery. Rats were allowed to regain consciousness and then were randomly allocated to treatment with ramipril (1 mg/kg body weight in drinking water) or vehicle for 28 days. RESULTS: The SHR failed to develop reparative angiogenesis in response to ischemia, thus having inadequate perfusion recovery. Ramipril reduced both tail-cuff systolic blood pressure (180 +/- 7 v 207 +/- 2 mm Hg in the vehicle group at 28 days, P < .05) and intra-arterial mean blood pressure (115 +/- 6 v 135 +/- 5 mm Hg in the vehicle group, P < .05). These effects were associated with increased responsiveness to endothelium-dependent vasodilatation by acetylcholine. Treatment with ramipril did not influence muscular capillary and arteriole density but accelerated the rate of perfusion recovery, leading to complete healing within 28 days after surgery. CONCLUSIONS: These results indicate that ACE inhibition by ramipril may be useful for the treatment of peripheral vascular complications in hypertension. 相似文献
19.
Teresa Trenkwalder Anna Lena Lahmann Magdalena Nowicka Costanza Pellegrini Tobias Rheude N. Patrick Mayr Stephanie Voss Sabine Bleiziffer Rüdiger Lange Michael Joner Albert M. Kasel Adnan Kastrati Heribert Schunkert Oliver Husser Martin Hadamitzky Christian Hengstenberg 《The international journal of cardiovascular imaging》2018,34(6):985-992
Multislice computed tomography (MSCT) has emerged as the mainstay in patients planned for transcatheter aortic valve implantation (TAVI). Incidental findings (IF) in MSCT are common. However, the exact incidence, clinical relevance and further consequences of IF are unclear and it is controversial whether IF adversely affect patients’ outcome. We analyzed MSCT data of 1050 patients screened for TAVI between January 2011 and December 2014. Median follow-up of patients was 20 months. In total, 3194 IF were identified, which were classified into clinically non-relevant IF (2872, 90%) and clinically relevant IF (322, 10%). In 25% of patients (258/1050) at least one clinically relevant IF was present. Age (80?±?7 vs. 80?±?7 years; p?=?0.198) and EuroSCORE II (3.6% [2.1–5.7] vs. 3.6% [2.1–5.9]; p?=?0.874) was similar between patients with and without a clinically relevant IF. TAVI was performed less frequently in patients with a clinically relevant IF (76% vs. 85%; p?<?0.001), with more patients receiving surgical aortic valve replacement in that group (14% vs. 11%; p?=?0.042), possibly due to the high rate of incidental aneurysms of the ascending aorta (n?=?48). If TAVI was performed mortality did not differ (30-days: 4% vs. 3%; p?=?0.339, 1-year: 11% vs. 14%; p?=?0.226) between patients with and without a clinically relevant IF. Our study is the largest study to analyze prevalence, clinical relevance and therapeutic consequences of IF during screening for TAVI. IF in pre-procedural MSCT are common and clinically relevant in one-quarter of patients. However, these findings had no impact on overall mortality. 相似文献
20.
Costanza Papagno Carlo Cecchetto Fabiola Reati Lorenzo Bello 《Cognitive neuropsychology》2013,30(3):292-311
The role of the phonological loop in auditory sentence comprehension was examined in a 35-year-old woman with a selective deficit of verbal short-term memory (STM). More specifically, the objective of the experiment was to test whether sentence comprehension is limited by number of propositions, as suggested by Rochon, Waters, and Caplan (2000), or whether it depends on syntactic complexity. In an offline task, severe impairment was present on cleft objects and centre-embedded structures; the deficit on object relatives in right peripheral position was less relevant, and the patient was able to handle sentential coordination easily. In an online task, her processing of centre-embedded structures and object relatives in right peripheral position was significantly slower than that in controls. She was also significantly slower in processing the verb of the object relative in centre-embedded structures. The results obtained do not support the claim that the difficulties encountered by patients with limited working-memory resources are due to the number of propositions in the sentence; they do, however, suggest a direct involvement of the phonological loop in processing syntactically complex sentences. 相似文献