secondary ion mass spectrum
81Magnetochemistry — is concerned with the magnetic properties of chemical compounds. Magnetic properties arise from the spin and orbital angular momentum of the electrons contained in a compound. Compounds are diamagnetic when they contain no unpaired electrons.… …
82Calcium — (pronEng|ˈkælsiəm) is the chemical element with the symbol Ca and atomic number 20. It has an atomic mass of 40.078. Calcium is a soft grey alkaline earth metal, and is the fifth most abundant element by mass in the Earth s crust. Calcium is also …
83CBS — This article is about the broadcast network. For its parent company, see CBS Corporation. For other uses of CBS, see CBS (disambiguation). CBS Broadcasting Inc. (CBS) Type …
84Fusion power — The Sun is a natural fusion reactor. Fusion power is the power generated by nuclear fusion processes. In fusion reactions two light atomic nuclei fuse together to form a heavier nucleus (in contrast with fission power). In doing so they release a …
85AFP-675 — (Air Force Program 675) was a Space Shuttle experiment package that was carried into orbit on Discovery as part of STS 39.AFP 675 consisted of six experiment packages mounted on a pallet in the Discovery s cargo bay. The total weight of the… …
86renal system disease — Introduction any of the diseases or disorders that affect the human excretory system. They include benign and malignant tumours, infections and inflammations, and obstruction by calculi. Diseases can have an impact on the elimination of… …
87Oxygen — This article is about the chemical element and its most stable form, O2 or dioxygen. For other forms of this element, see Allotropes of oxygen. For other uses, see Oxygen (disambiguation). nitrogen ← oxygen → fluorine ↑ O ↓ …
88Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …
89art conservation and restoration — Maintenance and preservation of works of art, their protection from future damage, deterioration, or neglect, and the repair or renovation of works that have deteriorated or been damaged. Research in art history has relied heavily on 20th and… …
90Lawrence Livermore National Laboratory — Infobox Laboratory name = Lawrence Livermore National Laboratory motto = Science in the national interest established = 1952 by the University of California director = George H. Miller city = Livermore, California budget = US$1.6 billion type =… …
