MIT Media Lab - StumbleUpon. New cement conducts electricity like metal ~ Pink Tentacle - StumbleUpon. 11 Apr 2007 A team of researchers led by professor Hideo Hosono of the Tokyo Institute of Technology has developed a new type of alumina cement that conducts electricity like metal by altering the crystal structure at the nano level. Ordinary alumina cement made from a lime-alumina compound (C12A7) has a crystal structure consisting of asymmetric cages, making it a poor conductor of electricity. But by sealing the alumina cement compound along with titanium inside a glass tube and heating it to 1,100 degrees Celsius, the researchers were able to create a homogenized, symmetrical cage structure that conducts electricity like metal. Results indicate the cement's electrical conductivity is on par with that of manganese at room temperature.
Moreover, like other metals, the cement's conductivity increases as its temperature decreases. [Sources: Nikkei Net, Mainichi, SPring-8 press release] Snorg Tees - New Funny T-Shirts Every Week (Vintage T-Shirt, Cool Graphic Tee Shirts) - StumbleUpon. Natural Pools or Swimming Ponds - StumbleUpon. Natural Pools or Natural Swimming Ponds (NSPs) Let nature clean the water... Chemical-free water garden and swimming pool. The plant portion, or regeneration zone, is separated from the swimming area by the wall seen a few inches below the water’s surface. www.naturalswimmingpools.com The pools have skimmers and pumps that circulate the water through the regeneration zone and back into the swimming area. The aquatic plants filter out contaminants and use nutrients from the water as food which helps prevent algae.
Then rocks, such as granite river rock or haydite, to which friendly bacteria attach, act as biological filters. More questions answered here: www.ecodesignscape.co.uk & www.gartenart.co.uk There are many options as to design. A gradual slope contains the plants, gravel and loamy sand, a wall keeps them separate from the swimming area.
Vacuum but twice a year and tend to the plants as needed. Plants steel the nutrients away from algae. www.gartenart.co.uk Northeast U.S. Builders:
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