reduction+to+powder
51Drying — For the food conservation method, see drying (food). Drying is a mass transfer process consisting of the removal of water or another solvent [1] by evaporation from a solid, semi solid or liquid. This process is often used as a final production… …
52photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates …
53platinum group — ▪ chemical element group Introduction six metals, in order of increasing atomic weight, ruthenium (Ru), rhodium (Rh), palladium (Pd), osmium (Os), iridium (Ir), and …
54List of Acts of Parliament of the Great Britain Parliament, 1780-1800 — This is an incomplete list of Acts of the Parliament of Great Britain for the years 1780 1800. For acts passed prior to 1707 see List of Acts of Parliament of the English Parliament and List of Acts of Parliament of the Scottish Parliament.For… …
55Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …
56Crack cocaine — A pile of crack cocaine ‘rocks’ Crack cocaine is the freebase form of cocaine that can be smoked. It may also be termed rock, hard, iron …
57rare-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 …
58Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …
59Phencyclidine — Systematic (IUPAC) name …
60Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and …
