全文获取类型
收费全文 | 2738篇 |
免费 | 360篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 32篇 |
儿科学 | 57篇 |
妇产科学 | 27篇 |
基础医学 | 626篇 |
口腔科学 | 62篇 |
临床医学 | 140篇 |
内科学 | 330篇 |
皮肤病学 | 75篇 |
神经病学 | 332篇 |
特种医学 | 29篇 |
外科学 | 332篇 |
综合类 | 135篇 |
预防医学 | 91篇 |
眼科学 | 21篇 |
药学 | 362篇 |
中国医学 | 147篇 |
肿瘤学 | 317篇 |
出版年
2024年 | 2篇 |
2023年 | 64篇 |
2022年 | 27篇 |
2021年 | 64篇 |
2020年 | 75篇 |
2019年 | 155篇 |
2018年 | 146篇 |
2017年 | 140篇 |
2016年 | 104篇 |
2015年 | 121篇 |
2014年 | 160篇 |
2013年 | 184篇 |
2012年 | 145篇 |
2011年 | 169篇 |
2010年 | 151篇 |
2009年 | 146篇 |
2008年 | 121篇 |
2007年 | 92篇 |
2006年 | 97篇 |
2005年 | 98篇 |
2004年 | 77篇 |
2003年 | 64篇 |
2002年 | 52篇 |
2001年 | 37篇 |
2000年 | 21篇 |
1999年 | 18篇 |
1998年 | 10篇 |
1997年 | 9篇 |
1995年 | 5篇 |
1994年 | 8篇 |
1993年 | 33篇 |
1992年 | 14篇 |
1991年 | 11篇 |
1990年 | 6篇 |
1989年 | 12篇 |
1988年 | 4篇 |
1987年 | 4篇 |
1985年 | 44篇 |
1984年 | 58篇 |
1983年 | 32篇 |
1982年 | 56篇 |
1981年 | 26篇 |
1980年 | 25篇 |
1979年 | 24篇 |
1978年 | 43篇 |
1977年 | 13篇 |
1976年 | 22篇 |
1975年 | 47篇 |
1974年 | 40篇 |
1973年 | 37篇 |
排序方式: 共有3115条查询结果,搜索用时 12 毫秒
1.
《Journal of vascular and interventional radiology : JVIR》2022,33(4):399-407
PurposeTo evaluate the midterm outcomes of percutaneous transluminal renal angioplasty (PTRA) for pediatric renovascular hypertension (RVH).Materials and MethodsThe clinical data of patients who underwent PTRA for RVH in the authors’ hospital from 2012 to 2019 were retrospectively analyzed. Postprocedural blood pressure, glomerular filtration rate (GFR) of the affected kidney, restenosis, and complications were closely monitored.ResultsPTRA was performed in a total of 30 children (20 boys and 10 girls), with a mean age of 7.3 years ± 0.7 (range, 40 days to 13.9 years) and a mean weight of 25.0 kg ± 2.3 (range, 3.4–53 kg). The median follow-up period was 26.5 months (range, 1 month to 7.5 years). Technical success was achieved in 26 (86.7%) of the 30 patients. Restenosis developed in 3 patients (10.0%). Only 1 patient underwent stent implantation, and the stent fractured 8 months later, requiring further intervention. There were no other complications. In terms of clinical benefit of blood pressure control after the initial PTRA procedure, 15 patients (50%) were cured and 7 patients (23.3%) showed improvement. There was no significant difference in the etiology, lesion location, and lesion length between patients with clinical benefit and failure (P = .06, P = .202, and P = .06, respectively). GFR of the affected kidney was significantly improved from 19.9 mL/min ± 11.2 to 38.1 mL/min ± 11.9 at the 6-month follow-up after PTRA (P < .001).ConclusionsThe overall results of PTRA for pediatric RVH caused by different etiologies are promising. PTRA not only provided a clinical benefit of blood pressure control in 73.3% of the patients but also significantly improved the function of the affected kidney. 相似文献
2.
Joachim Fensterle 《Journal der Deutschen Dermatologischen Gesellschaft》2006,4(3):205-216
Many cellular signaling pathways are involved in the development of cancer. Depending on the tumor entity, the nature as well as the mode of activation can differ. Some signaling pathways frequently show changes as all tumor cells have to fulfill some basic requirements such as independence from growth factors or insensitivity against apoptosis. In this review, the possibilities of a tumor to manipulate signaling pathways to reach these goals are exemplified based on an archetypical melanoma cell. In addition, new therapeutic options based on the knowledge of signaling pathways will be discussed. 相似文献
3.
顺铂聚乳酸微球的药物释放特性及肝动脉栓塞研究 总被引:5,自引:0,他引:5
对顺铂聚乳酸微球进行了体外药物释放和家犬肝动脉栓塞研究。该微球粒径范围为50~200μm,平均粒径为115.76±35.94μm,顺铂含量为37.16%(W/W);体外药物释放机制符合Higuchi方程;肝动脉栓塞后8h,肝组织顺铂浓度高达21.55±12.18μg/g,明显高于肝动脉灌注顺铂组:3.16±0.09μg/g(P<0.05);肝动脉栓塞组的顺铂血浓峰值、各取血点浓度及曲线下面积AUC皆低于肝动脉灌注顺铂组。可望达到提高栓塞部位的药物疗效,降低全身毒副反应的作用。 相似文献
4.
5.
6.
7.
空管药物疗法治疗牙髓病和根尖周病疗效观察 总被引:1,自引:0,他引:1
用SMTD复合药物对牙髓病和根尖周病实施空管药物疗法。78例103颗获得完整随访资料患牙经两年观察,92.2%治愈率。文章介绍了治疗方法,讨论了空管药物疗法的愈合机理、优点、失败原因及其预防措施。 相似文献
8.
9.
10.
Uchida Y Yamazaki H Watanabe S Hayakawa K Meng Y Hiramatsu N Kasai A Yamauchi K Yao J Kitamura M 《Clinical and experimental immunology》2005,142(1):76-83
Resveratrol, a natural polyphenolic phytoalexin, has been considered as a potential anti-inflammatory agent because of its suppressive effect on nuclear factor-kappaB (NF-kappaB). However, we recently found that treatment of glomerular mesangial cells with resveratrol significantly and dose-dependently enhanced NF-kappaB activation triggered by proinflammatory cytokines. This finding was evidenced by different reporter assays as well as by expression of an endogenous NF-kappaB-dependent gene, intercellular adhesion molecule-1. The NF-kappaB promoting effect of resveratrol was also observed in renal tubular LLCPK1 cells, but not in HepG2 hepatoma cells. In all cell types tested, treatment with resveratrol alone did not affect NF-kappaB activity. The enhanced activation of NF-kappaB by resveratrol progressed for at least 24 h and was accompanied by sustained down-regulation of an endogenous NF-kappaB inhibitor, IkappaBbeta, but not IkappaBalpha. Although expression of inducible nitric oxide synthase was suppressed by resveratrol, nitric oxide, a negative regulator of NF-kappaB, was not involved in the regulation of NF-kappaB by resveratrol. These data elucidated, for the first time, that resveratrol may enhance activation of NF-kappaB under certain circumstances. 相似文献