thermal-resistant enamel
21Pocket watch — This article is about the portable timepiece. For the Dave Grohl album, see Pocketwatch (album). A gold pocket watch with hunter case and watch chain …
22Dental cement — Dental cements are hard, brittle materials formed by mixing powder and liquid together. They are either resin cements or acid base cements. In the latter the powder is a basic metal oxide or silicate and the liquid is acidic. An acid base… …
23digestive system disease — Introduction any of the diseases that affect the human digestive tract. Such disorders may affect the esophagus, stomach, small intestine, large intestine (colon), pancreas, liver, or biliary tract. A prevalent disorder of the digestive… …
24test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …
25Barium fluoride — ] Barium fluoride is also a common, very fast (one of the fastest) scintillator for the detection of X rays, gamma rays or other high energy particles. One of its applications is the detection of 511 keV gamma photons in positron emission… …
26Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… …
27Radioactive waste — 2007 ISO radioactivity danger logo, designed in part for long term radioactive waste depositories which might survive into a far future time in which all knowledge of the meaning of present common radiation danger symbols and signs has been lost… …
28mammal — mammallike, adj. /mam euhl/, n. any vertebrate of the class Mammalia, having the body more or less covered with hair, nourishing the young with milk from the mammary glands, and, with the exception of the egg laying monotremes, giving birth to… …
29Abrasive — An abrasive is a material, often a mineral, that is used to shape or finish a workpiece through rubbing which leads to part of the workpiece being worn away. While finishing a material often means polishing it to gain a smooth, reflective surface …
30bioceramics — Introduction ceramic products or components employed in medical and dental applications, mainly as implants and replacements. This article briefly describes the principal ceramic materials and surveys the uses to which they are put in… …
