You may be surprised to find that the control of the sound of a room is not really very complicated and can usually be accomplished with inexpensive materials.The paper deals with the setting up and test flights of a fuel cell general aviation aircraft fuelled by hydrogen. A general explanation of the design activities is first presented in conjunc

‘We developed a special floor made of cobogó brick filled with concrete; a fully experimental work that resulted in a beautiful pattern,’ explains Humberto. ‘We employed sisal fiber as a natural background that complements the strong graphic effect created by the cobogó brick.Put one of these on each vent connected to the s

"Paz, amor e rock 'n' roll" Cinquenta anos depois: o mito do Woodstock, o auge e este colapso do sonho hippieAn experimental study of the acoustic impedance of Helmholtz resonator arrays under a turbulent boundary layerEste difusor Muito mais simples por construir é uma superfície encurvada tal tais como a indicada na figura seguinte.Magní

Matching Theodore's massive beats with Do La Rocha's fuzzed-out keys and typically incisive vocals, the duo crafted a stripped-down sound that harked back to Rage's rawest, most urgent material. According to Tim Commerford, a new album is in the works, but details are sketchy. Still, the mutual respect between the pair

New microphone mountings designed to reduce flow noise by recessing the microphones and covering the cavities will also be described, and their flow noise levels compared to flush-mounting the microphones. Typical honeycomb core, perforated face-sheet liner samples were tested at different flow speeds at FLIR. Results were fed to multiple, previous