全文获取类型
收费全文 | 995篇 |
免费 | 104篇 |
国内免费 | 5篇 |
专业分类
耳鼻咽喉 | 34篇 |
儿科学 | 29篇 |
妇产科学 | 33篇 |
基础医学 | 121篇 |
口腔科学 | 9篇 |
临床医学 | 149篇 |
内科学 | 169篇 |
皮肤病学 | 26篇 |
神经病学 | 96篇 |
特种医学 | 21篇 |
外科学 | 105篇 |
综合类 | 8篇 |
现状与发展 | 1篇 |
一般理论 | 1篇 |
预防医学 | 158篇 |
眼科学 | 17篇 |
药学 | 61篇 |
肿瘤学 | 66篇 |
出版年
2024年 | 3篇 |
2023年 | 17篇 |
2022年 | 17篇 |
2021年 | 37篇 |
2020年 | 34篇 |
2019年 | 49篇 |
2018年 | 45篇 |
2017年 | 48篇 |
2016年 | 29篇 |
2015年 | 35篇 |
2014年 | 46篇 |
2013年 | 80篇 |
2012年 | 92篇 |
2011年 | 88篇 |
2010年 | 37篇 |
2009年 | 31篇 |
2008年 | 58篇 |
2007年 | 63篇 |
2006年 | 42篇 |
2005年 | 49篇 |
2004年 | 48篇 |
2003年 | 32篇 |
2002年 | 42篇 |
2001年 | 5篇 |
2000年 | 9篇 |
1999年 | 5篇 |
1998年 | 10篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 4篇 |
1993年 | 2篇 |
1992年 | 6篇 |
1991年 | 6篇 |
1990年 | 3篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 2篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1973年 | 3篇 |
1972年 | 5篇 |
1971年 | 1篇 |
1968年 | 1篇 |
1963年 | 1篇 |
1962年 | 1篇 |
排序方式: 共有1104条查询结果,搜索用时 15 毫秒
21.
22.
Brian D. Wright Michael C. Deblock Patrick O. Wagers Ernest Duah Nikki K. Robishaw Kerri L. Shelton Marie R. Southerland Michael A. DeBord Kortney M. Kersten Lucas J. McDonald Jason A. Stiel Matthew J. Panzner Claire A. Tessier Sailaja Paruchuri Wiley J. Youngs 《Medicinal chemistry research》2015,24(7):2838-2861
23.
24.
External electrical cardioversion in patients with cardiac implantable electronic devices: Is it safe and is immediate device interrogation necessary? 下载免费PDF全文
Nikki AHA Pluymaekers MD Elton AMP Dudink MD MSc Lucas Boersma MD PhD Ömer Erküner MD Marloes Gelissen MSc Vincent van Dijk MD Maurits Wijffels MD PhD Trang Dinh MD Kevin Vernooy MD PhD Harry JGM Crijns MD PhD Jippe Balt MD PhD Justin GLM Luermans MD PhD 《Pacing and clinical electrophysiology : PACE》2018,41(10):1336-1340
25.
26.
Colonic epithelial cell division, cell migration, and cell transit were investigated in dogs given 300 micrograms.kg-1.day-1 of the prostaglandin E1 analogue, misoprostol, for 11 weeks. The animals were then injected with [3H]thymidine and killed at timed intervals. The distribution of labeled and mitotic cells within the crypts was determined by scoring autoradiographs. There were no significant differences in mitotic index or labeling index between the two groups. The data were pooled and converted to give crypt cell production rates of 51.1 +/- 11.1 (control) and 58.24 +/- 8.6 cells per crypt per hour (test). However, the crypt length and cell population were slightly, but significantly, greater in the misoprostol-treated group (P less than 0.01). The movement of the wave of labeled cells with time after injection was used to calculate the median cell migration rates, which were 23.50 +/- 3.03 cell positions per day (control) and 18.30 +/- 2.56 (test). Thus, misoprostol had no significant effect on either the cell migration rate or the transit rates. 相似文献
27.
28.
Nikki H. Stricker Jenna E. Keller Diane T. Castillo Kathleen Y. Haaland 《Journal of traumatic stress》2015,28(2):102-109
Neurocognitive problems are common with posttraumatic stress disorder (PTSD) and are important to understand because of their association with the success of PTSD treatment and its potential neural correlates. To our knowledge, this is the first neurocognitive study in an all‐female U.S. veteran sample, some of whom had PTSD. We examined neurocognitive performance and assessed whether learning deficits, common in PTSD, were associated with executive functioning. Veterans with PTSD (n = 56) and without (n = 53) were evaluated for psychiatric and neurocognitive status. The PTSD group had a lower estimated IQ (d = 0.53) and performed more poorly on all neurocognitive domains (d range = 0.57–0.88), except verbal retention (d = 0.04). A subset of the 2 groups that were matched on IQ and demographics similarly demonstrated poorer performance for the PTSD group on all neurocognitive domains (d range = 0.52–0.79), except verbal retention (d = 0.15). Within the PTSD group, executive functioning accounted for significant variance in verbal learning over and above IQ and processing speed (ΔR2 = .06), as well as depression (ΔR2 = .07) and PTSD severity (ΔR2 = .06). This study demonstrated that female veterans with PTSD performed more poorly than females without PTSD on several neurocognitive domains, including verbal learning, processing speed, and executive functioning. Replication of these results using a control group of veterans with more similar trauma exposure, history of mild traumatic brain injury, and psychiatric comorbidities would solidify these findings. 相似文献
29.
30.