The present invention provides a fiber Bragg grating made of boron co-doped germanium fiber, a Bragg grating part wherein chemically etched and thermally regenerated. By using an optical fiber diameter of 125m, the grating is etched to core diameter…

A method for producing an aqueous sugar solution from cellulosic materials comprising the steps of heating ground cellulosic materials with perchloric acid; neutralizing the heated materials with an alkali to yield a salt precipitate; and filtering…

The present invention provides a bottle replenishing tool for lifting, conveying, and invertably positioning a water bottle onto a water dispenser, the bottle replenishing tool includes: a) a supporting structure adapted for supporting, transporting…