desired purity

См. также в других словарях:

• Encyclopedia of the Brethren of Purity — The Encyclopedia of the Brethren of Purity (Arabic: رسائل أخوان الصفا و خلان الوفا‎ Rasa il ikhwan as safa wa khillan al wafa; also variously known as the Epistles of the Brethren of Sincerity , Epistles of the Brethren of Purity and Epistles of… …   Wikipedia

• rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 …   Universalium

• Isotope separation — is the process of concentrating specific isotopes of a chemical element by removing other isotopes, for example separating natural uranium into enriched uranium and depleted uranium. This is a crucial process in the manufacture of uranium fuel… …   Wikipedia

• Compound management — Drug discovery depends on methods by which many different chemicals are assayed for their activity. These chemicals are stored as physical quantities in a chemical library or libraries which are often assembled from both outside vendors and… …   Wikipedia

• Fractionation — See also: Fractionated spacecraft Fractionation is a separation process in which a certain quantity of a mixture (solid, liquid, solute, suspension or isotope) is divided up in a number of smaller quantities (fractions) in which the composition… …   Wikipedia

• ablution — ablutionary, adj. /euh blooh sheuhn/, n. 1. a cleansing with water or other liquid, esp. as a religious ritual. 2. the liquid thus used. 3. a washing of the hands, body, etc. [1350 1400; ME < L ablution (s. of ablutio), equiv. to ablut(us), ptp.… …   Universalium

• tequila — /teuh kee leuh/, n. 1. a strong liquor from Mexico, distilled from fermented mash of an agave. 2. the plant itself, Agave tequilana. [1840 50; after Tequila, a town in Jalisco, Mexico, a center for its production] * * * Distilled liquor, usually… …   Universalium

• metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …   Universalium

• materials science — the study of the characteristics and uses of various materials, as glass, plastics, and metals. [1960 65] * * * Study of the properties of solid materials and how those properties are determined by the material s composition and structure, both… …   Universalium

• arts, East Asian — Introduction       music and visual and performing arts of China, Korea, and Japan. The literatures of these countries are covered in the articles Chinese literature, Korean literature, and Japanese literature.       Some studies of East Asia… …   Universalium

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium