thin-layer drying
41Paper — For other uses, see Paper (disambiguation). A stack of copy paper Paper is a thin material mainly used for wr …
42Fresco — (plural either frescos or frescoes ) is any of several related painting types, done on plaster on walls or ceilings. The word fresco comes from the Italian word affresco which derives from the adjective fresco ( fresh ), which has Latin origins.… …
43Asphalt concrete — Asphalt concrete. As shown in this cross section, many older roadways are …
44Mars — This article is about the planet. For other uses, see Mars (disambiguation) …
45boundary ecosystem — ▪ biology Introduction complex of living organisms in areas where one body of water meets another, e.g., estuaries and lagoons, or where a body of water meets the land, e.g., marshes. The latter are often called wetlands. Boundary… …
46Campfire — A campfire is a fire lit at a campsite, usually in a fire ring. Campfires are a popular feature of camping, particularly among organized campers such as Scouts or Guides. Without proper precautions they are also potentially dangerous. A certain… …
47Microplasma — A microwave microplasma jet Microplasmas are plasmas of small dimensions, ranging from tens to thousands of micrometers. They can be generated at a variety of temperatures and pressures, existing as either thermal or non thermal plasmas. Non… …
48separation and purification — ▪ chemistry Introduction in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …
49Primer (paint) — A primer is a preparatory coating put on materials before painting. Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.When primers are usedPrimer …
50Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …
