نتایج جستجو برای: helmet
تعداد نتایج: 2939 فیلتر نتایج به سال:
BACKGROUND The authors investigated the effectiveness of conservative (repositioning therapy with or without physical therapy) and helmet therapy, and identified factors associated with treatment failure. METHODS A total of 4378 patients evaluated for deformational plagiocephaly and/or deformational brachycephaly were assigned to conservative (repositioning therapy, n = 383; repositioning the...
Non-invasive mechanical ventilation (NIV) has proved to be an excellent technique in selected critically ill patients with different forms of acute respiratory failure. However, NIV can fail on account of the severity of the disease and technical problems, particularly at the interface. The helmet could be an alternative interface compared to face mask to improve NIV success. We performed a cli...
PURPOSE Current helmet testing standards do not address the rotational components of an impact to the head. We describe a new testing paradigm used to measure the rotational acceleration of a headform and a protective helmet following an impact to the head in the horizontal plane. This impact simulation allows for the testing of currently available head protection devices in conditions thought ...
OBJECTIVE To determine if health outcomes and demographics differ according to helmet status between persons with cycling-related traumatic brain injuries (TBI). METHODS This is a retrospective study of 128 patients admitted to the Montreal General Hospital following a TBI that occurred while cycling from 2007-2011. Information was collected from the Quebec trauma registry and the coroner's o...
Recent rises in bicycle and motorcycle use have been met with concern over their impact on road safety. This has been coupled with the recognition that helmet effectiveness needs to be reviewed. Little recent research has been performed on helmet performance in real accidents and related injury risks in Australia. A retrospective study was undertaken at a major trauma centre in Sydney to examin...
Jockey head injuries, especially concussions, are common in horse racing. Current helmets do help to reduce the severity and incidences of head injury, but the high concussion incidence rates suggest that there may be scope to improve the performance of equestrian helmets. Finite element simulations in ABAQUS/Explicit were used to model a realistic helmet model during standard helmeted rigid he...
The Reality Helmet is a wearable device providing a novel form of interactive experience, in which the user’s vision and hearing is completely shielded off from the world. Video and sounds are sampled by the Helmet from the surrounding environment, but through computer processing sounds are presented to the wearer as vision and sights are turned into a soundscape. The result is a radical transf...
INTRODUCTION This study examined the use of helmets in adults, adolescents, and children in a western Canadian province that has no helmet legislation. METHODS A prospective survey of cyclists in two urban Alberta regions was completed. Cyclist demographics, helmet wearing and helmet use were recorded. RESULTS Helmets were observed in 2,259 (55%; 99% CI: 52-57) of 4,141 cyclists; however, o...
Legislation and product development in the USA has prompted an interest in mirror-use by traffic flaggers to improve awareness of vehicles approaching from behind. Helmet- and flagpole-mounted configurations were studied using a graphical approach with field verification studies by comparing fields of view, object magnifications, and human factors considerations. Plane and convex mirrors with d...
The paper considers the issues of increasing passive safety motor vehicles. designs modern helmets are shown, positive and negative sides considered, systems their certification considered. Aspects creating compact a conceptual folding helmet discussed. design helmet, material for making it, is proposed.
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