to undergo strain
51Divinylcyclopropane-cycloheptadiene rearrangement — The divinylcyclopropane cycloheptadiene rearrangement is an organic chemical transformation that involves the isomerization of a 1,2 divinylcyclopropane into a cycloheptadiene or triene. It is conceptually related to the Cope rearrangement, but… …
52Necking (engineering) — A polyethylene sample with a stable neck. Necking, in engineering or materials science, is a mode of tensile deformation where relatively large amounts of strain localize disproportionately in a small region of the material.[1] The resulting… …
53Cold formed steel — (CFS) is the common term for products made by rolling or pressing thin gauges of sheet steel into goods. Cold formed steel goods are created by the working of sheet steel using stamping, rolling, or presses to deform the sheet into a usable… …
54geology — /jee ol euh jee/, n., pl. geologies. 1. the science that deals with the dynamics and physical history of the earth, the rocks of which it is composed, and the physical, chemical, and biological changes that the earth has undergone or is… …
55materials testing — Introduction measurement of the characteristics and behaviour of such substances as metals, ceramics, or plastics under various conditions. The data thus obtained can be used in specifying the suitability of materials for various… …
56Cyclohexane conformation — A cyclohexane molecule in chair conformation. Hydrogen atoms in axial positions are shown in red, while those in equatorial positions are in blue. A cyclohexane conformation is any of several three dimensional shapes that a cyclohexane molecule… …
57Dates of 2006 — ▪ 2007 January Keeping America competitive requires affordable energy. And here we have a serious problem. America is addicted to oil, which is often imported from unstable parts of the world. U.S. Pres. George W. Bush, in his state of the union… …
58HIV — Classification and external resources Diagram of HIV …
59Kevin Eastman — This article is about the comic book artist. For basketball coach, see Kevin Eastman (basketball). Kevin Eastman Born May 30, 1962 (1962 05 30) (age 4 …
60aging — ag·ing (āʹjĭng) n. 1. The process of growing old or maturing. 2. An artificial process for imparting the characteristics and properties of age. * * * Gradual change in an organism that leads to increased risk of weakness, disease, and death. It… …
