assay metal
41Hallmark — A hallmark is a mark or series of marks struck on items made of precious metals mdash; platinum, gold, silver and in some nations, palladium. General OverviewHallmarks DefinedA hallmark, is an official mark or series of marks struck on items made …
42analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… …
43Cupellation — is a metallurgical process in which ores or alloyed metals are treated under high temperatures and carefully controlled operations in order to separate noble metals, like gold and silver, from base metals like lead, copper, zinc, arsenic,… …
44platinum group — ▪ chemical element group Introduction six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …
45Jewellery Quarter — infobox UK place country = England latitude= 52.489 longitude= 1.910 official name= Jewellery Quarter map type= West Midlands population = 3,000 approx. population density= area total km2= 1.07 metropolitan borough= City of Birmingham… …
46Antioxidant — Model of the antioxidant metabolite glutathione. The yellow sphere is the redox active sulfur atom that provides antioxidant activity, while the red, blue, white, and dark grey spheres represent oxygen, nitrogen, hydrogen, and carbon atoms,… …
47touchstone — /tuch stohn /, n. 1. a test or criterion for the qualities of a thing. 2. a black siliceous stone formerly used to test the purity of gold and silver by the color of the streak produced on it by rubbing it with either metal. [1475 85; TOUCH +… …
48Matthew Boulton — 1792 portrait of Matthew Boulton Born 3 September 1728(1728 09 03) Birmingham, England …
49MELISA — A MELISA (Memory Lymphocyte Immunostimulation Assay) test is a blood test that detects Type IV allergy to metals, chemicals, environmental toxins and molds from one single blood sample. It can also identify active Lyme disease (Lyme Borreliosis) …
50Physical Sciences — ▪ 2009 Introduction Scientists discovered a new family of superconducting materials and obtained unique images of individual hydrogen atoms and of a multiple exoplanet system. Europe completed the Large Hadron Collider, and China and India took… …
