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thermosets

(Encyclopedia) thermosets, materials that can not be softened on heating. In thermosetting polymers, the polymer chains are joined (or cross-linked) by intermolecular bonding. Thermosets are usually…

Algebra: Solving Rational Inequalities

Solving Rational Inequalities Algebra Rational Equations and Inequalities Solving Rational Equations Proportions and Cross Multiplying Investigating Variation Solving Rational Inequalities…

dry cleaning

(Encyclopedia) dry cleaning, process of cleaning fabrics without water. Special solvents and soaps are used so as not to harm fabrics and dyes that will not withstand the effects of ordinary soap and…

decay of organic matter

(Encyclopedia) decay of organic matter or putrefaction, process whereby heterotrophic organisms, including some bacteria, fungi, saprophytic plants, and lower animals, utilize the remains of once-…

inlaying

(Encyclopedia) inlaying, process of ornamenting a surface by setting into it material of different color or substance, usually in such a manner as to preserve a continuous plane. Inlay is employed in…

Ertl, Gerhard

(Encyclopedia) Ertl, GerhardErtl, Gerhardgĕrˈhärt ârˈtəl [key], 1936– German chemist, b. Stuttgart, grad. Univ. of Stuttgart (1961), Technical Univ., Munich (Ph.D 1965). After holding a number of…

taxidermy

(Encyclopedia) taxidermytaxidermytăkˈsĭdûrˌmē [key], process of skinning, preserving, and mounting vertebrate animals so that they still appear lifelike. The fur or feathers are cleaned, and the skin…

Slaughterhouse Cases

(Encyclopedia) Slaughterhouse Cases, cases decided by the U.S. Supreme Court in 1873. In 1869 the Louisiana legislature granted a 25-year monopoly to a slaughterhouse concern in New Orleans for the…

Herbert Henry Dow

Born: 1866Birthplace: Belleville, Ontario Process of extracting bromine—Dow invented an entirely new method of extracting bromine from underground brine. (1983)Died: 1930

Edith Flanigen

Born: 1929 Molecular Sieves. A pioneer in silicate and molecular sieve chemistry, Flanigen invented or co-invented over 200 synthetic materials. Her work with zeolite Y made oil refining more…