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Phonak Holding AG was founded in 1985 as a holding company for the Phonak Group. In 1987 corporate headquarters were moved from Zurich to Stäfa . The company was floated on the SWX Swiss Exchange in 1994 and renamed Sonova Holding AG on 1 August 2007, although this change applied only to the holding company and in parts to the subsidiaries ...
The Siberian grain-silo house was the first system in which Fuller noted the "urban dust dome" effect: many installations have reported that a dome induces a local vertical heat-driven vortex that sucks cooler air downward into a dome, if the dome is vented properly—a single overhead vent, and peripheral vents. Fuller adapted the later units ...
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Phonak also offers pediatric hearing aids and solutions for individuals with single-sided deafness. Speak with a hearing professional to determine which models best suit your hearing needs, habits ...
An Ab anbar (water reservoir) with double domes and windcatchers (openings near the top of the towers) in the central desert city of Naeen, Iran. Windcatchers are a form of natural ventilation. [1] Ventilation is the intentional introduction of outdoor air into a space.
Madame de Meuron with ear trumpet. The first hearing aid was created in the 17th century. The movement toward modern hearing aids began with the creation of the telephone, and the first electric hearing aid was created in 1898.
Copper roofs can be designed to meet or surpass other materials in terms of energy savings. A vented copper roof assembly at Oak Ridge National Laboratories (U.S.) substantially reduced heat gain versus stone-coated steel shingle (SR246E90) or asphalt shingle (SR093E89), resulting in lower energy costs. [90] Types of copper roofs include: [91]
Domes were also built as part of Muslim palaces, throne halls, pavilions, and baths, and blended elements of both Byzantine and Persian architecture, using both pendentives and squinches. The origin of the crossed-arch dome type is debated, but the earliest known example is from the tenth century at the Great Mosque of Córdoba.
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