hardening rate
61Fallout shelter — A sign pointing to an old fallout shelter in New York City. Nuclear weapons …
62Structural engineering — is a field of engineering dealing with the analysis and design of structures that support or resist loads. Structural engineering is usually considered a speciality within civil engineering, but it can also be studied in its own right. [cite… …
63First strike — In nuclear strategy, a first strike is a preemptive surprise attack employing overwhelming force. First strike capability is a country s ability to defeat another nuclear power by destroying its arsenal to the point where the attacking country… …
64Formwork — Animation depicting construction of multi story building using aluminum handset formwork. Modular steel frame formwork for a foundation …
65Syndemic — refers to the concentration of two or more diseases or other health conditions in a population in which there is some level of biological interaction among the diseases and health conditions that magnifies the negative health effects of one or… …
66Lime mortar — is a type of mortar. It was used in the construction of the vast majority of brick and stone buildings worldwide from ancient times until the widespread adoption of Portland cement in the late nineteenth century. It is still used today, for the… …
67Insect winter ecology — entails the overwinter survival strategies of insects, which are in many respects more similar to those of plants than to many other animals, such as mammals and birds. This is because unlike those animals, which can generate their own heat… …
68hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… …
69Judaism — /jooh dee iz euhm, day , deuh /, n. 1. the monotheistic religion of the Jews, having its ethical, ceremonial, and legal foundation in the precepts of the Old Testament and in the teachings and commentaries of the rabbis as found chiefly in the… …
70nickel processing — Introduction preparation of the metal for use in various products. Although it is best known for its use in coinage, nickel (Ni) has become much more important for its many industrial applications, which owe their importance to a… …
