direct solidification
81zinc processing — Introduction preparation of the ore for use in various products. Zinc (Zn) is a metallic element of hexagonal close packed (hcp) crystal structure and a density of 7.13 grams per cubic centimetre. It has only moderate hardness and can …
82LYOPHILISATION — Depuis longtemps, l’homme recherche un moyen de conserver toutes sortes de substances périssables. En effet, ses ressources alimentaires ont d’abord pour origine essentielle la chasse et la cueillette. Avec l’élevage et la culture, il… …
83MODÈLE — Le langage de la philosophie aiderait peu à éclairer l’origine de la notion de modèle, qui a reçu un emploi très large dans la méthodologie des sciences. Cette origine est technologique: le modèle est d’abord la «maquette», l’objet réduit et… …
84PEINTURE - Les techniques — Il existe une technique de la peinture, dans la mesure où l’on utilise certains types de matériaux associés dans un rapport exact d’interdépendance. L’expression « technique de la peinture » peut néanmoins prêter à confusion, car elle désigne à… …
85primary — [prī′mer΄ē, prī′mə rē] adj. [ME prymary < L primarius < primus, first: see PRIME] 1. first in time or order of development; primitive; original; earliest 2. from which others are derived; fundamental; elemental; basic 3. designating colors… …
86Composer — This article is about composers of music. For the HTML editor, see Mozilla Composer. French composer Louis Nicolas Clérambault composing at the keyboard. A composer (Latin com+ponere, literally one who puts together ) is a person who creates… …
87Motor oil — For the TV documentary focused on the Edmonton Oilers of the National Hockey League, see Oil Change (TV Series). Motor oil sample Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is… …
88Powder metallurgy — is the process of blending fine powdered materials, pressing them into a desired shape (compacting), and then heating the compressed material in a controlled atmosphere to bond the material (sintering). The powder metallurgy process generally… …
89STS-73 — is a Space Shuttle program mission.Infobox Space mission mission name = STS 73 insignia = Sts 73 patch.png shuttle = Columbia launch pad = 39 B launch = October 20, 1995, 9:53:00 a.m. EDT landing = November 5, 1995, 6:45:21 a.m. EST, KSC Runway… …
90Micro-encapsulation — is a process in which tiny particles or droplets are surrounded by a coating to give small capsules many useful properties. In a relatively simplistic form, a microcapsule is a small sphere with a uniform wall around it. The material inside the… …
