this lecture introduces testing methods for the protection of children in vehicles. in order to reduce the fatalities and injuries of children in transportation state of the art child protection is mandatory. global laws and regulations such as ece or fmvss are introduced and compared with new car assessment programs (ncap). engineering tools and equipment to test according to global child prot...

As a kind of link terminal in power grid system, clamp has become one the key components and widely used for connecting transmission lines electrical equipment. However, joint between tubular structure plate or drainage is always weak part, which easy to produce defects then accelerate failure during service. This also limited use space certain extent. In this paper, research status on heating ...

Limited by multiple factors, such as land use planning, landscape coordination and environmental standards, the ventilation conditions of urban highway tunnels are insufficient, therefore joint control purification becomes a necessary solution. In this study, effect number, location decentralized equipment, tunnel rate on pollution in studied using one-dimensional calculation. The results show ...

Perfluoroisobutyronitrile (C4F7N), an environment-friendly insulating gas, has excellent properties and the potential to be used in gas-insulated equipment when mixed with CO2. Selecting suitable adsorption materials adsorb decomposition products of C4F7N mixture can ensure safe stable operation personal safety operators electric power industry. The characteristics ZSM-5 molecular sieve on its ...

introduction: nowadays, medical equipment is essential to provide health care services in hospitals. since 20% of the hospitals costs are devoted to providing such equipment, an appropriate management is required to maintain it. in this study it is intended to investigate the maintenance management of medical equipment in hospitals. methods and materials: it is a cross-sectional study. the popu...