assay metal
111estimate — vb 1 Estimate, appraise, evaluate, value, rate, assess, assay are comparable when meaning to judge a thing with respect to its worth. Estimate usually implies a personal and sometimes a reasoned judgment which, whether considered or casual, is by …
112Touchstone — A touchstone is a small tablet of dark stone such as fieldstone, slate, or lydite, used for assaying precious metal alloys. It has a finely grained surface on which soft metals leave a visible trace.Probing with a touchstoneBy rubbing a metal on… …
113Magnesium in biology — Magnesium is an essential element in biological systems. Magnesium occurs typically as the Mg2+ ion. It is an essential mineral nutrient for life[1][2][3] and is present in every cell type in every organism. For example, ATP (adenosine… …
114Triphenylphosphine — Chembox new Name = Triphenylphosphine ImageFile = Triphenylphosphine structure.svg ImageName = Triphenylphosphine ImageFile1 = Triphenylphosphine ray 3D balls.png ImageName1 = Ball and stick model of the triphenylphosphine molecule IUPACName =… …
115Magnesium transporters — This page links directly from the magnesium in biological systems page. All forms of life require magnesium, and yet the molecular mechanisms of Mg2+ uptake from the environment and the distribution (transport) of this vital element within the… …
116Medicinal clay — German medicinal clay (Luvos Heilerde) consisting of loess, i.e. a mixture of sand, clay, and silt The use of medicinal clay in folk medicine goes back to prehistoric times. The indigenous peoples around the world still use clay widely, which is… …
117Staffordshire Hoard — Coordinates: 52°39′19″N 1°54′24″W / 52.65528°N 1.90667°W / 52.65528; 1.90667 …
118Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting …
119Heteropoly acid — A heteropoly acid is a class of acid made up of a particular combination of hydrogen and oxygen with certain metals and non metals. This type of acid is frequently used as a re usable acid catalyst in chemical reactions.To qualify as a heteropoly …
120Birmingham — This article is about the city in England. For the U.S. city named after it, see Birmingham, Alabama. For other uses, see Birmingham (disambiguation). City of Birmingham   City and Metropolitan borough   …
