cement chemistry
111Methanol economy — The methanol economy is a suggested future economy in which methanol replaces fossil fuels as a means of energy storage, ground transportation fuel, and raw material for synthetic hydrocarbons and their products. It offers an alternative to the… …
112Hexavalent chromium — Hex chrome redirects here. For the color printing process, see Hexachrome. An example of a chromium(VI) compound: chromium trioxide Hexavalent chromium (chromium VI) refers to chemical compounds that contain the element chromium in the +6… …
113History of chemical engineering — Chemical engineering as a discipline is a little over one hundred years old. [W. F. Furter (1982) A Century of Chemical Engineering Plenum Press (New York)] It grew out of mechanical engineering in the last part of the 19th century, because of a… …
114History of science and technology in China — Inventions …
115Spa bath — Note that the term spa bath can also refer to a spa or hot tub. A spa bath basin of water having a temperature of up to 45 degrees Celsius (#expr: 45 *9/5+32 Fahrenheit), containing salts, herbal extracts or herbal oils, in which the hands, feet… …
116Green Goblin — Norman Osborn as the Green Goblin, art by Luke Ross. Publication information Publisher Marvel Comics …
117Silver nanoparticles — Part of a series of articles on Nanomaterials Fullerenes …
118Calcium — (pronEng|ˈkælsiəm) is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth s crust. Calcium is also …
119Composite material — A cloth of woven carbon fiber filaments, a common element in composite materials Composite materials, often shortened to composites or called composition materials, are engineered or naturally occurring materials made from two or more constituent …
120Portland stone — is a limestone from the Jurassic period quarried on the Isle of Portland, Dorset. The quarries consist of beds of white grey limestone separated by chert beds. It has been used extensively throughout the British Isles, notably in major public… …
