全文获取类型
收费全文 | 457篇 |
免费 | 33篇 |
国内免费 | 16篇 |
专业分类
耳鼻咽喉 | 6篇 |
儿科学 | 28篇 |
妇产科学 | 4篇 |
基础医学 | 50篇 |
口腔科学 | 4篇 |
临床医学 | 50篇 |
内科学 | 96篇 |
皮肤病学 | 10篇 |
神经病学 | 28篇 |
特种医学 | 70篇 |
外科学 | 38篇 |
综合类 | 11篇 |
预防医学 | 13篇 |
眼科学 | 50篇 |
药学 | 32篇 |
肿瘤学 | 16篇 |
出版年
2023年 | 4篇 |
2021年 | 2篇 |
2020年 | 4篇 |
2019年 | 4篇 |
2018年 | 5篇 |
2017年 | 5篇 |
2016年 | 6篇 |
2015年 | 13篇 |
2014年 | 12篇 |
2013年 | 13篇 |
2012年 | 9篇 |
2011年 | 22篇 |
2010年 | 10篇 |
2009年 | 12篇 |
2008年 | 15篇 |
2007年 | 32篇 |
2006年 | 15篇 |
2005年 | 13篇 |
2004年 | 6篇 |
2003年 | 10篇 |
2002年 | 8篇 |
2001年 | 8篇 |
2000年 | 9篇 |
1999年 | 5篇 |
1998年 | 15篇 |
1997年 | 20篇 |
1996年 | 23篇 |
1995年 | 18篇 |
1994年 | 14篇 |
1993年 | 10篇 |
1992年 | 8篇 |
1991年 | 2篇 |
1990年 | 17篇 |
1989年 | 20篇 |
1988年 | 14篇 |
1987年 | 11篇 |
1986年 | 7篇 |
1985年 | 8篇 |
1984年 | 5篇 |
1983年 | 8篇 |
1982年 | 8篇 |
1981年 | 7篇 |
1979年 | 3篇 |
1978年 | 8篇 |
1977年 | 10篇 |
1976年 | 5篇 |
1975年 | 9篇 |
1974年 | 3篇 |
1967年 | 3篇 |
1963年 | 2篇 |
排序方式: 共有506条查询结果,搜索用时 15 毫秒
81.
Lasseter G McNulty CA Palmer M Yoxall H Kibbler C;on behalf of the Health Protection Agency GP Microbiology Laboratory Use Group 《Mycoses》2012,55(6):476-482
The objective of this study was to investigate the management of suspected fungal nail infections by general practitioners (GPs) and determine whether guidance is sought when submitting specimens for investigation or treating cases. Questionnaires were sent to all GPs (n = 2420) served by five Health Protection Agency (HPA) collaborating laboratories in the South West of England. A total of 769 GPs responded – topical and oral antifungals were never used by 29% and 16% of GPs respectively. When antifungals were prescribed, topicals were normally given because of the severity of infection (32%); Amorolofine (53%) was the preferred choice. Oral antifungals were most often prescribed after receipt of a laboratory report (77%); Terbinafine was the preferred choice (86%). Seventy percent of GPs would only treat a suspected nail infection with oral antifungals after sending a sample for investigation, yet 27% never waited for a microscopy report before prescribing oral antifungal treatment. GPs routinely send specimens from suspected fungal nail infections for microbiological investigation, yet treatment is often prescribed before a result is received. With clinical signs of fungal infections often non‐specific, GPs should rely on laboratory results before prescribing expensive and lengthy antifungal treatments. Laboratories could further reduce antifungal use by including guidance on microscopy and culture reports. 相似文献
82.
Salman MS Sharpe JA Eizenman M Lillakas L To T Westall C Dennis M Steinbach MJ 《Journal of child neurology》2006,21(12):1025-1031
Saccades are fast-orienting eye movements. Saccadic adaptation, a form of motor learning, is a corrective change in the amplitude of saccades in response to error. The aim of the study was to ascertain whether saccadic adaptation occurs in typically developing children. We recorded saccades with an infrared eye tracker in 39 children, aged 8 to 19 years, at baseline to 12-degree horizontal target steps and after an adaptive task. During the adaptive task, a saccadic hypometric error was induced. This task consisted of 200 12-degree target steps that stepped backward 3 degrees during the initial saccade and without the participants' awareness. The initial saccade triggered the back-step. This paradigm required a corrective reduction of the amplitude of the initial saccades in response to the induced error. Saccadic adaptation was achieved in 26 participants, whose mean saccadic amplitudes decreased by 13% (P < .05). Saccadic adaptation was not influenced by age. We conclude that children as young as 8 years old have established functions of the neural circuits responsible for the motor learning required for saccadic adaptation. 相似文献
83.
84.
Herpetic esophagitis 总被引:1,自引:0,他引:1
85.
86.
Kostas G. Boboridis Nikolaos Kozeis Anastasios GP. Konstas 《Ocular immunology and inflammation》2020,28(2):188-190
ABSTRACTThis interesting study raises a scientific issue for revisiting three important elements on diagnosis, use of preservatives and selection of the appropriate topical treatment. Itchy feeling can be encountered in other ophthalmic conditions misdiagnosed as allergy, benzalkonium chloride is responsible for surface toxicity resulting in reduced efficacy and tolerability of topical allergy medications and it should be avoided on the management of ocular allergy. Unpreserved ketotifen 0,025% has been shown to be the least toxic formulation being the optimum option for efficacy and tolerability on the management of ocular allergy. 相似文献
87.
88.
Cervical radiculopathy: prospective evaluation with surface coil MR imaging, CT with metrizamide, and metrizamide myelography 总被引:3,自引:0,他引:3
A prospective study was undertaken to compare the accuracy of surface coil magnetic resonance (SCMR) imaging, metrizamide myelography (MM), and computed tomography with metrizamide (CTM) in the determination of cervical radiculopathy. Surgical findings were the objective measure of accuracy. Fifty-two patients underwent all imaging studies. Studies were evaluated for disease location and type (bone vs. soft tissue). Twenty-eight patients underwent subsequent cervical surgery at 39 levels form an anterior interbody approach. Predictions made with SCMR imaging were surgically confirmed in 74% of patients, with CTM in 85%, and with MM in 67%. There was 90% agreement with surgical findings when SCMR imaging and CTM were used jointly, and 92% agreement when CTM and MM were used jointly, In general, SCMR imaging was as sensitive as CTM for identification of disease level, but not as specific for type of disease. MM was the modality least specific for disease type. The major advantage of CTM was its ability to distinguish bone from soft tissue, for which contrast material is unnecessary. SCMR imaging is a viable alternative to MM and, together with computed tomography, if needed, provides a thorough examination of the cervical region. 相似文献
89.
90.
Mechanical clot dissolution: new concept 总被引:3,自引:0,他引:3
The authors present preliminary data on in vitro mechanical clot dissolution by means of a catheter with a tiny high-speed propeller enclosed in a special housing. Preweighed human blood clots were subjected to the catheter in a test tube with saline at various propeller speeds and durations of application. After filtration of the resultant slurry, the clot residue was weighed and examined histologically. Clot dissolution was found to be related to both the duration and speed of propeller rotation. No fibrin residue was seen after dissolution, although potential embolic material, composed of clumps of cellular debris as large as 208 microns in longest dimension, was found. Mechanical clot dissolution could possibly be used in any natural or synthetic blood vessel in which there is acute or subacute thrombosis, with fewer complications and lower cost than obtained with traditional methods. 相似文献