refrigeration source
71Air well (condenser) — High mass air well of Belgian engineer Achile Knapen in Trans en Provence …
72Conservation de la viande — Argument ménager de la conservation de la viande, circa 19 …
73Ammonia — For other uses, see Ammonia (disambiguation). Ammonia …
74Earth 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… …
75technology, history of — Introduction the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both… …
76Propane — Not to be confused with propene. Propane …
77Hedwig and Robert Samuel Foundation — Infobox Organization name = Samuel Foundation size = caption = motto = Give youth a chance! formation = June 3, 1932 type = headquarters = Düsseldorf, Germany location = membership = leader title = President of the Board leader name = Martin… …
78Diffusion of technology in Canada — This article outlines the history of the diffusion or spread of technology in Canada. Technologies chosen for treatment here include, in rough order, transportation, communication, energy, materials, industry, public works, public services… …
79Conservation Alimentaire — Conservation des aliments La conservation des aliments comprend un ensemble de procédés de traitement des denrées alimentaires dont le but est d en conserver les propriétés gustatives et nutritives, les caractéristiques de texture, de couleur,… …
80Conservation Des Aliments — La conservation des aliments comprend un ensemble de procédés de traitement des denrées alimentaires dont le but est d en conserver les propriétés gustatives et nutritives, les caractéristiques de texture, de couleur, ainsi que la comestibilité,… …
