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Small rock tumbler with the barrel in place, ready to rotate Parts breakdown. Tumble finishing, also known as tumbling or rumbling, [1] is a technique for smoothing and polishing a rough surface on relatively small parts. In the field of metalworking, a similar process called barreling, or barrel finishing, [2] works upon the same principles.
The old fashioned glass, otherwise known as the rocks glass, whiskey glass, and lowball glass [1] [2] (or simply lowball), is a short tumbler used for serving spirits, such as whisky, neat or with ice cubes ("on the rocks"). It is also normally used to serve certain cocktails, such as the old fashioned.
An oversized tumbler for serving chilled beverages, while reducing the need to frequently refill the glass. A tumbler is a flat-floored beverage container usually made of plastic, glass or stainless steel. Theories vary as to the etymology of the word tumbler. One such theory is that the glass originally had a pointed or convex base and could ...
The first known example of a tumbler lock was found in the ruins of the Palace of Khorsabad built by king Sargon II (721–705 BC.) in Iraq. [1] Basic principles of the pin tumbler lock may date as far back as 2000 BC in Egypt; the lock consisted of a wooden post affixed to the door and a horizontal bolt that slid into the post. The bolt had ...
NSI was established in 1981 as an independent entity on the campus of The Rockefeller University in New York City. In founding the institute, Edelman argued that the quest for fundamental understanding of brain functions was being impeded, at most existing institutions, by artificial barriers between scientific disciplines and by a reward structure that favored modest, incremental research ...
The National Science Institute (NSI), previously known as The Geek Group, was a not-for-profit educational organization based in Grand Rapids, Michigan with over 25,000 members around the world. [1] The NSI sought to provide opportunity for all people through programs designed to foster lifelong education, vocational access, and creativity in ...
The relevance of the NSI is based on the fact that proteins are the major biological source of Nitrogen: for various types of protein, there are empirical formulas which correlate the nitrogen content to the protein content. Other related measures of protein solubility are the Protein Solubility Index (PSI), the Protein Dispersibility index (PDI).
Urethral sounding is the practice of inserting objects (typically made by metal or silicone) into the urethra for sexual gratification. [1] Urethral dilatation is a urological procedure that uses probes called sounds to enlarge the inside diameter of the urethra and locate obstructions in the urethra, or as a treatment for urethral strictures.