全文获取类型
收费全文 | 4281篇 |
免费 | 262篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 86篇 |
儿科学 | 108篇 |
妇产科学 | 109篇 |
基础医学 | 455篇 |
口腔科学 | 604篇 |
临床医学 | 219篇 |
内科学 | 934篇 |
皮肤病学 | 111篇 |
神经病学 | 278篇 |
特种医学 | 70篇 |
外科学 | 639篇 |
综合类 | 10篇 |
一般理论 | 2篇 |
预防医学 | 434篇 |
眼科学 | 131篇 |
药学 | 203篇 |
中国医学 | 64篇 |
肿瘤学 | 90篇 |
出版年
2023年 | 12篇 |
2022年 | 67篇 |
2021年 | 103篇 |
2020年 | 68篇 |
2019年 | 106篇 |
2018年 | 150篇 |
2017年 | 118篇 |
2016年 | 113篇 |
2015年 | 137篇 |
2014年 | 189篇 |
2013年 | 228篇 |
2012年 | 258篇 |
2011年 | 305篇 |
2010年 | 167篇 |
2009年 | 154篇 |
2008年 | 242篇 |
2007年 | 294篇 |
2006年 | 262篇 |
2005年 | 246篇 |
2004年 | 194篇 |
2003年 | 143篇 |
2002年 | 143篇 |
2001年 | 116篇 |
2000年 | 105篇 |
1999年 | 67篇 |
1998年 | 35篇 |
1997年 | 25篇 |
1996年 | 20篇 |
1995年 | 13篇 |
1994年 | 12篇 |
1993年 | 13篇 |
1992年 | 29篇 |
1991年 | 46篇 |
1990年 | 23篇 |
1989年 | 16篇 |
1988年 | 19篇 |
1987年 | 19篇 |
1986年 | 23篇 |
1985年 | 22篇 |
1984年 | 16篇 |
1983年 | 13篇 |
1979年 | 14篇 |
1977年 | 10篇 |
1971年 | 12篇 |
1970年 | 21篇 |
1969年 | 27篇 |
1968年 | 15篇 |
1967年 | 20篇 |
1966年 | 14篇 |
1965年 | 12篇 |
排序方式: 共有4547条查询结果,搜索用时 15 毫秒
51.
Thirty-nine patients with acute cervical spine fractures and/or dislocations between C3 and C7 were submitted to an anterior approach using bone graft fixation without screw and plate systems and three required a preliminary posterior approach to reduce a dislocation. Graft dislodgement due to technical problems occurred at a rate of 7.7% postoperatively and 2.8% 1 month later. No redislodgement occurred. All fusions became solid after 3 months. Their progress was based on the Frankel scale, before surgery, at the moment of the discharge, and at 6 months follow-up. This experience shows how patients with an acute cervical injury can improve even when admitted late after trauma. 相似文献
52.
53.
Reconstruction of the Alveolar Buccal Bone Plate in Compromised Fresh Socket after Immediate Implant Placement Followed by Immediate Provisionalization 下载免费PDF全文
Rafael Scaf de Molon DDS MS Erica Dorigatti de Avila DDS Luiz Antonio Borelli de Barros‐Filho DDS Weber Adad Ricci DDS MS PhD Sotirios Tetradis PhD Joni Augusto Cirelli DDS MS PhD Luiz Antonio Borelli de Barros DDS MS PhD 《Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]》2015,27(3):122-135
54.
Endonasal endoscopic surgery for squamous cell carcinoma of the sinonasal cavities and skull base: Oncologic outcomes based on treatment strategy and tumor etiology 下载免费PDF全文
55.
Head and neck squamous cell carcinoma lymphatic spread and survival: Relevance of vascular endothelial growth factor family for tumor evaluation 下载免费PDF全文
56.
Frota Filho JD Lucchese FA Leães P Valente LA Vieira MS Blacher C 《Arquivos brasileiros de cardiologia》2002,78(6):586-591
Cardiac angiosarcomas are malignant tumors that almost invariably have a short and fatal evolution. The therapeutic approach includes surgery, chemotherapy, and radiation therapy, alone or in combination. Heart transplantation is an attractive option in nonresectable tumors, even though the current experience is still limited. However, in most patients, the diagnosis is still established late, and survival is only slightly altered by the proposed treatments, mainly due to previously existing and undetected metastases. We report a case that illustrates the therapeutic dilemma faced with this neoplasia, and we discuss the case based on a literature review. 相似文献
57.
Rare genomic rearrangement in a boy with Williams–Beuren syndrome associated to XYY syndrome and intriguing behavior 下载免费PDF全文
58.
Tadeu Uggere de Andrade Silvia Cruz Goes Coutinho Haguihara Raiana Maria Prucoli Falsoni Cristiane Lyrio da Silva Dionísio Gonzaga Dubois Filho Flvia de Souza Andrade Moraes Andrews Marques do Nascimento Girlandia Alexandre Brasil Ewelyne Miranda de Lima 《Basic & clinical pharmacology & toxicology》2019,124(4):360-369
The aim of the study was to evaluate the effect of an anabolic steroid, stanozolol, in a model of atherosclerosis and to investigate the involvement of the modulation of the inflammatory cytokines and oxidative stress in vascular lipid deposition. Low‐density lipid receptor‐deficient (LDLr?/?) mice were fed a standard chow diet and were each week injected subcutaneously either saline (control C group) or 20 mg/kg stanozolol (S group). After 8 weeks, the levels of cholesterol, oxidized LDL (OxLDL) and cytokines were measured in plasma, lipid deposition in aorta was evaluated by en face analysis, and thiobarbituric acid‐reactive substances and oxidation protein were determined in liver. The S group demonstrated increases in vascular lipid deposition, triglycerides and non‐HDL cholesterol levels. Stanozolol increased tumour necrosis factor alpha (TNF‐α) and decreased interleukin‐10 as well as increased the TNF‐α/IL‐10 ratio. Furthermore, oxidative stress was observed in the S group, as indicated by an increase in the plasma OxLDL, as well as by lipid peroxidation and oxidation of proteins in the liver. Chronic treatment with stanozolol promoted lipid deposition in the LDLr?/? mice that could be attributed to a modification of the circulating cytokine levels and systemic oxidative stress. Our results suggest that the anabolic steroid stanozolol in the absence of functional LDL receptors by increasing systemic inflammation and oxidative stress may increase the risk of development and progression of atherosclerosis. 相似文献
59.