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A pastry bag (or piping bag in the Commonwealth) is an often cone- or triangular-shaped bag made from cloth, paper, plastic, or the intestinal lining of a lamb, that is squeezed by hand [1] to pipe semi-solid foods by pressing them through a narrow opening at one end often fitted with a shaped nozzle, for many purposes including in particular cake decoration and icing.
Bagpipes are a woodwind instrument using enclosed reeds fed from a constant reservoir of air in the form of a bag. The Great Highland bagpipes are well known, but people have played bagpipes for centuries throughout large parts of Europe, Northern Africa, Western Asia, around the Persian Gulf and northern parts of South Asia.
Northern Plains Beaded Pipe Bag c. 1870s The Sioux Quilled Pipe Bag at left is decorated with quillwork forming flora and fauna, buffalo and caterpillars. The "cocoon" design symbolizes spiritual and physical transformation, [ 1 ] and the Sioux spirit Yumni, the whirlwind, responsible for the four directions of the world.
It is possible to change the pitch by using different chanters and reeds. "Few attempts have been made hitherto to combine the bagpipes with classical orchestral instruments, due mainly to conflicts of balance and tuning," said composer Graham Waterhouse about his work Chieftain's Salute Op. 34a for Great Highland Bagpipe and String Orchestra ...
Process piping and power piping are typically checked by pipe stress engineers to verify that the routing, nozzle loads, hangers, and supports are properly placed and selected such that allowable pipe stress is not exceeded under different loads such as sustained loads, operating loads, pressure testing loads, etc., as stipulated by the ASME B31, EN 13480, GOST 32388, RD 10-249 or any other ...
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