Home Â» Projects Â» Generic Design Â» Bow String Truss House Â» Bow Truss House The Bow Truss House (BTH) is appropriate for most climates. The truss is composed of a horizontal bottom chord and convex top chord, forming a gently curved roof with a pitch shallow enough to function as a living roof.
Black tea contains 2% to 4% caffeine, which affects thinking and alertness, increases urine output, and may reduce the symptoms of Parkinson's disease. It also contains antioxidants and other substances that might help protect the heart and blood vessels.
Researchers from several countries have presented evidence that suggests that black teas, green teas and oolong teas, have a protective capability against oral, lung, colon and other cancers. Green teas especially, with more than thirty polyphenols, have a unique beneficial effect on the human system.reen tea, which is not fermented, has about one-third the caffeine per cup of black tea, which is fully fermented. Oolong is semi-fermented and has about half as much caffeine as black tea. Coffee by contrast, has about twice as much caffeine as black tea.