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In analytical chemistry, sample preparation (working-up) refers to the ways in which a sample is treated prior to its analyses. Preparation is a very important step in most analytical techniques, because the techniques are often not responsive to the analyte in its in-situ form, or the results are distorted by interfering species. Sample ...
Combat Ban – Testing and evaluation of the Air Force Vought A-7D aircraft, cancelled. Combat Beef – Build-up of a strategic reserve within the USA for Tactical Air Command units in South Vietnam (also called Beef Broth) Combat Bonus – Test activities associated with AF exploitation programs, cancelled.
Metallurgical assay. A 19th-century assay laboratory in Tombstone Courthouse State Historic Park, Arizona. A model of a late 19th-century Canadian ( Yukon) seal used to certify the quality of assayed gold. A metallurgical assay is a compositional analysis of an ore, metal, or alloy, usually performed in order to test for purity or quality.
Ray-Ban is a brand of luxury sunglasses and eyeglasses created in 1936 by Bausch & Lomb. The brand is best known for its Wayfarer and Aviator lines of sunglasses. In 1999, Bausch & Lomb sold the brand to Italian eyewear conglomerate Luxottica Group for a reported $640 million.
The Graduate Record Examinations ( GRE) is a standardized test that is part of the admissions process for many graduate schools [ 8] in the United States and Canada [ 9] and a few other countries. The GRE is owned and administered by Educational Testing Service (ETS). [ 10] The test was established in 1936 by the Carnegie Foundation for the ...
Industrial radiography is a modality of non-destructive testing that uses ionizing radiation to inspect materials and components with the objective of locating and quantifying defects and degradation in material properties that would lead to the failure of engineering structures. It plays an important role in the science and technology needed ...
Ray-Ban Meta is a range of smartglasses created by Meta Platforms and EssilorLuxottica. They include two cameras, open-ear speakers, a microphone, and touchpad built into the frame. [ 1 ] They are latest in a line of smartglasses released by major companies including Snap Inc and Google and are designed as one component of Facebook’s plans ...
Ray-Ban Wayfarer sunglasses and eyeglasses have been manufactured by Ray-Ban since 1952. Made popular in the 1950s and 1960s by music and film icons such as Buddy Holly , Roy Orbison and James Dean , Wayfarers almost became discontinued in the 1970s, before a major resurgence was created in the 1980s through massive product placements .