BACKGROUND Use of fuel heaters is associated with childhood asthma. However, no studies have evaluated the associations of flue use and mechanical ventilation (ventilation) with asthma symptoms in schoolchildren. METHODS This cross-sectional study investigated schoolchildren in grades 1 through 6 (age 6-12 years) in Sapporo, Japan. From November 2008 through January 2009, parents completed qu...

Due to the depletion of fossil fuel reserves, it is now more important than ever explore and use alternate forms energy. “Solar energy a promising long-term solution that can meet world's needs. essential we energy-related solutions as soon possible. Solar solution. Artificially roughened solar air heaters perform better smooth ones under same operating conditions. However, artificial roughness...

Most buildings require power produced by fossil fuels, the extraction and consumption of which contaminate our environment. The Virginia Center of Basic and Applied Science (CBAS, INC) constructed a building in a remote forested area as a plant and fish nursery (and living space for staff) to be operated by solar electrical power. Comfortable summer interior temperature is facilitated by an ope...

Induction cooktops are a key element in home electrification. This paper presents new use of induction cooktops, which allows the preparation infusions directly ceramic mug. It is proposed design water heater with an immersible metallic load. The dimensions load allow its embedding small vessels. Despite being smaller than conventional inductors, has specific shape that it to efficiently receiv...

The operation of water heating uses a substantial amount energy and is responsible for 30% household’s overall electricity consumption. Determining methods reducing demand crucial countries such as South Africa, where supply almost exclusively electrical, 88% it generated by coal, deficits cause frequent blackouts. Decreasing the consumption tanked heaters can be achieved standing losses therma...

Silver nanowire (Ag NW) networks have attracted wide attention as transparent electrodes for emerging flexible optoelectronics. However, the sheet resistance is greatly limited by large wire-to-wire contact resistances. Here, we propose a simple sunlight illumination approach to remarkably improve their electrical conductivity without any significant degradation of the light transmittance. Beca...