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Odor — Aroma redirects here. For other uses, see Aroma (disambiguation). Allegory of the senses by Jan Brueghel the Elder, Museo del Prado An odor or odour is caused by one or more volatilized chemical compounds, generally at a very low concentration,… … Wikipedia
Dental amalgam controversy — Dental amalgam filling The dental amalgam controversy refers to the conflicting views over the use of amalgam as a filling material mainly because it contains the element mercury. The concern centers on the health effects of toxicity or allergy… … Wikipedia
Dental plaque — Inadequate removal of plaque caused a build up of calculus (dark yellow color) near the gums on almost all the teeth. Dental plaque is a biofilm, usually a pale yellow, that develops naturally on the teeth. Like any biofilm, dental plaque is… … Wikipedia
analysis — /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… … Universalium
SOLS - Microbiologie — Tous les types de micro organismes existent dans les sols. Ce sont soit des eucaryotes (champignons, algues et protozoaires), soit des procaryotes (bactéries et cyanobactéries). Leur biodiversité est considérable. Leur distribution est fonction… … Encyclopédie Universelle
Polymer — Appearance of real linear polymer chains as recorded using an atomic force microscope on surface under liquid medium. Chain contour length for this polymer is 204 nm; thickness is 0.4 nm.[1] A polymer is a large molecule (macromolecule … Wikipedia
Physical 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… … Universalium
Tetris — Tetяis redirects here. For the Tengen produced game, see TETЯIS: The Soviet Mind Game. Tetris The box of the Nintendo version of Tetris for the NES. Developer(s) Alexey Pajitnov (E60 prototype), Vadim Ge … Wikipedia
Yeast — of the species Saccharomyces cerevisiae Scientific classification Domain … Wikipedia
Chlorhexidine — Systematic (IUPAC) name N ,N hexane 1,6 diylbis[N (4 chlorophenyl)(imidodicarbonimidic diamide)] Clinical data Trade names … Wikipedia
Diffusion (acoustics) — Diffusion, in acoustics and architectural engineering, is the efficacy by which sound energy is spread evenly in a given environment. A perfectly diffusive sound space is one that has certain key acoustic properties which are the same anywhere in … Wikipedia