trace material
11микропримесь — — [http://www.eionet.europa.eu/gemet/alphabetic?langcode=en] EN trace material 1) Both metals and non metals, essential for the metabolic processes of algae, invertebrates and vertebrates. Organisms that derive nearly all their energy via… …
12Simeon Kayyara — (Hebrew: ????? ?????) was a Jewish Babylonian halakist of the first half of the 9th century. The early identification of his surname with ?ahirah, the Arabic name of Cairo (founded 980), was shown by J.L. Rapoport ( Teshubot ha Ge onim, ed.… …
13preconcentration — noun The concentration of a trace material prior to an analysis …
14chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… …
15Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
16Cement kiln — Cement kilns are used for the pyroprocessing stage of manufacture of Portland and other types of hydraulic cement, in which calcium carbonate reacts with silica bearing minerals to form a mixture of calcium silicates. Over a billion tonnes of… …
17biblical literature — Introduction four bodies of written works: the Old Testament writings according to the Hebrew canon; intertestamental works, including the Old Testament Apocrypha; the New Testament writings; and the New Testament Apocrypha. The Old… …
18Fly ash — Photomicrograph made with a Scanning Electron Microscope (SEM): Fly ash particles at 2,000x magnification Fly ash is one of the residues generated in combustion, and comprises the fine particles that rise with the flue gases. Ash which does not… …
19Wavefront .obj file — For other uses, see Obj (disambiguation). OBJ geometry format Filename extension .obj Internet media type application/x tgif? Developed by Wavefront Technologies Type of format 3D model format OBJ (or .OBJ) is a ge …
20Section summary of the USA PATRIOT Act, Title II — President George W. Bush gestures as he addresses an audience Wednesday, July 20, 2005 at the Port of Baltimore in Baltimore, Md., encouraging the renewal of provisions of the Patriot Act. The following is a section summary of the USA PATRIOT Act …
