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排序方式: 共有9335条查询结果,搜索用时 15 毫秒
41.
莫瑞嘉 《实用医学影像杂志》2007,8(1):60-62
近年来,循证医学(EBM)风靡全球,被公认为21世纪临床医学发展趋势。目前,循证医学的发展十分迅速,已广泛应用于医疗卫生的各个领域,形成了许多新的医疗模式,如循证保健(EBH)、循证诊断(EBD)、循证内科(EBIM)、循证外科(EBS)、循证妇产科(EBGO)、循证儿科(EBP)、循证护理(EBN)等,使现代临床医学实践与教学进入了一个崭新的历史阶段[1-3]。循证医学就是遵循客观证据的医学,影像医学是提供最佳证据的技术之一,在医学影像新技术、新方法层出不穷的今天,如何将循证医学的原理应用到影像诊断学,这是医学影像工作者面临的重要问题,应引起高度重视[4]。 相似文献
42.
M E Lantsburg Iu V Mo?kin Iu Z Rozenblium 《Gigiena truda i professional'nye zabolevaniia》1992,(4):12-15
Dynamic studies of visual capacity for work in individuals working with displays revealed decreased accommodation volume after the long concentration on the display. The total time of work with the display of more than 2h a day involved a decrease of the accommodation volume by 0.42-0.49 diopters and transitory myopia of 0.15-0.21 diopters, as well as increased self-appraisal of fatigue. The system of prophylactic measures including rest breaks, special exercises, massage was worked out and put into practice. Repeated study has proved the effectiveness of suggested measures. 相似文献
43.
Kyung Cheon Kim Kwang Jin Rhee Hyun Dae Shin Young Mo Kim 《Knee surgery, sports traumatology, arthroscopy》2007,15(12):1478-1481
Calcific tendinitis is a common condition with characteristic clinical and radiological findings. Although we do not know
which condition initiated the pathologic cascade, we present a rare case of calcific tendinitis of the long head of the biceps
brachii at its origin, associated with a SLAP lesion. The calcium deposit was removed and the SLAP lesion was repaired with
a suture anchor arthroscopically. 相似文献
44.
45.
江汉平原鼠间流行性出血热感染研究 总被引:4,自引:0,他引:4
为了解湖北省江汉平原流行性出血热(EHF)疫区鼠间感染状况,采用挖洞法捕鼠,鉴定鼠种、性别和年龄,检查有无皮肤破伤,检测EHFV抗原抗体。结果,黑线姬鼠和褐家鼠占所捕鼠的69.7%和23.6%,其EHFV感染率分别为21.8%和30.9%。鼠间EHFV感染,成年鼠显著高于亚成年鼠和幼年鼠,感染率分别为40.8%、17.0%和12.4%;皮肤破伤鼠感染率45.9%,显著高于非皮肤破伤鼠的13.9%。感染鼠以窝为单位具有明显的窝聚集性,而感染鼠窝在地理空间上则随机分布。感染鼠血清分型,黑线姬鼠以野鼠型为主,少数为未定型;褐家鼠以家鼠型为主,亦有少数未定型。这表明,江汉平原EHF疫区是以黑线姬鼠和褐家鼠为主要宿主动物的家野混合型疫区;年龄、皮肤破伤和密切接触是该疫区鼠间EHFV传播的重要因素。 相似文献
46.
P Ia Filiptsev Ia G Mo?siuk Iu V Luk'ianov 《Vestnik khirurgii imeni I. I. Grekova》1989,143(11):36-38
The work presents an experience with 84 operations of making nonstandard arteriovenous fistulas in 75 patients using autovenous transplants, polytetrafluorethylene prosthesis and home bioprostheses from human umbilical veins made at plant "Sever". Results of the operations were followed-up during 3 years. It was shown that arteriovenous fistulas made of plastic materials generally have a higher level of complications and shorter terms of functioning as compared with ordinary fistulas. Nevertheless, using nonstandard fistulas is justified in a certain category of patients. 相似文献
47.
48.
P. J. Vaitkus Dr K. W. Johnston R. L. Bondar F. Stein P. A. J. Bascom Ly Mo M. Kassam L. C. Chadwick J. Mehi R. S. C. Cobbold 《Medical & biological engineering & computing》1990,28(4):306-311
During space flights, several clinical syndromes may be the result of changes in cerebral circulation. The purpose of the
paper is to describe the development and initial evaluation of a system for recording, processing and displaying transcranial
Doppler ultrasound (TCD) waveforms from the middle cerebral artery (MCA) in microgravity. Volunteers were repeatedly subjected
to 15–20 s intervals of microgravity (‘near zero gravity’) during flights on the KC-135 military aircraft. Continuous TCD
recordings from the MCA were stored on magnetic tape. The paper describes the system that was developed to digitise the Doppler
ultrasound data and markers that corresponded to the various levels of microgravity, obtain the maximum and mean Doppler waveforms,
identify the waveforms and quantify them. The results demonstrate the feasibility of making TCD recordings in a microgravity
environment and illustrate excellent performance of the system and its ease of operation. Quantitative waveform analysis of
the recordings from the first subject studied in the supine position showed statistically significant changes in MCA velocity
waveforms during microgravity. 相似文献
49.
V Ghe?ie G Mo?a M A Dobre-Ghe?ie M Laky A Olinescu S Dima I Moraru J Sj?quist 《Molecular immunology》1986,23(4):377-384
The monovalent V-1 fragment of protein A (fSpA) with a mol. wt of 13,000 obtained from an u.v. mutant of Staphylococcus aureus Cowan I strain was proved to be able to modulate significantly some of the effector functions of IgG, such as complement fixation, catabolism, attachment to Fc receptors and antibody-dependent cell-mediated cytotoxicity. Moreover fSpA-like protein A obtained from the A676 strain is mitogenic and enhances NK activity of human peripheral lymphocytes. The efficiency of fSpA was found to be lower than that of protein A with regard to its ability to inhibit complement fixation, EA rosette formation and antibody-dependent cell-mediated cytotoxicity. Both protein A and fSpA had the same efficiency in activation of the complement system after reaction with human or guinea pig IgG, and in increasing the IgG catabolism. Unlike fSpA the monovalent B fragment of protein A (with mol. wt of 7000) was not able to inhibit EA rosette formation and antibody-dependent cell-mediated cytotoxicity. The results recommend fSpA, substituting for protein A, as a molecular probe for the investigation of IgG antibody and lymphocyte effector functions. 相似文献
50.
Jinyi Yuan Biwen Mo Zhuang Ma Yuan Lv Shih-Lung Cheng Yanping Yang Zhaohui Tong Renguang Wu Shenghua Sun Zhaolong Cao Jufang Wu Demei Zhu Liwen Chang Yingyuan Zhang 《Journal of microbiology, immunology, and infection》2019,52(1):35-44