نتایج جستجو برای: the mask
تعداد نتایج: 16055843 فیلتر نتایج به سال:
Change detection from satellite images based on optimal asymmetric thresholding the difference image
As a process to detect changes in land cover by using multi-temporal satellite images, change detection is one of the practical subjects in field of remote sensing. Any progress on this issue increase the accuracy of results as well as facilitating and accelerating the analysis of multi-temporal data and reducing the cost of producing geospatial information. In this study, an unsupervised chang...
the laryngeal mask airway (lma) is an important addition to the anesthetist's equipments. however, its usage may involve some complications. we have encountered an unusual and potentially serious complication using this equipment. a 45-year old man underwent cataract surgery under general anesthesia. after the induction of anesthesia, a size 4 of the reusable classic lma was inserted without an...
background: despite the widespread use of respiratory protection equipment in different jobs, the effects of these devices on people’s physiological responses are not well recognized as yet. therefore, the aim of this study is to evaluate the effect of the air purifying respiratory protection equipment on the heart rate. methods: this experimental study was performed in a climate chamber under ...
Cephalometric evaluation of patients with Class III malocclusion after face mask therapy in mixed dentition period Dr. MS. A Akhoundi * - Dr. A. Khorshidian ** * Associate Professor of Orthodontics Dept., Faculty of Dentistry and Dental Research Center, Tehran University of Medical Sciences. ** Dentist. Abstract Background and Aim: Among different treatment options for patients with Class III m...
Background and Aim: Bioaerosols are one of the most important agents that cause post operating infections in hospitals. Surgical masks are recommended for prevention of bioaerosols transmition in operating rooms. This study aimed at evaluation of submicron particle filtration efficiency of domestic and imported surgical masks. Materials and Methods: In this cross sectional study, 5 types of...
Background: Cuffed pharyngeal tube is a device designed for ventilation of anesthetized patients. CPT has advantages over face mask including: maintaining of face mask can be difficult and boring after several minutes and mobility of the practitioner is reduced due to involvement of hands. Mask pressure can cause soft tissue and nerve damage around the nose. Anesthetic gas leakage from the mask...
این پایان نامه به دنبال ارائه روش هایی برای بهبودی سیگنال گفتار آلوده به نویز با رویکرد ارتقاء قابلیت فهم گفتار است. ماسک دودویی ایده ال (ibm) که هدف اصلی بحث آنالیز محاسباتی ترکیب شنیداری معرفی شده است، به عنوان ابزاری برای افزایش قابلیت فهم سیگنال گفتار مورد توجه قرار گرفته است. این ماسک در کنار توانایی که در افزایش قابلیت فهم دارد، مشکلاتی نیز همراه با آن وجود دارد. با توجه به تعریف ibm، که ...
background: cuffed pharyngeal tube is a device designed for ventilation of anesthetized patients. cpt has advantages over face mask including: maintaining of face mask can be difficult and boring after several minutes and mobility of the practitioner is reduced due to involvement of hands. mask pressure can cause soft tissue and nerve damage around the nose. anesthetic gas leakage from the mask...
Visual speech information helps listeners perceive speech in noise. The cues underpinning this visual advantage appear to be global and distributed, and previous research hasn’t succeeded in pinning down simple dimensions to explain the effect. In this study we focus on the temporal aspects of visual speech cues. In comparison to a baseline of auditory only sentences mixed with noise, we tested...
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