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Currently the aforementioned Swiss legal standards permit watch brands or watchmakers to label watches Swiss made under certain legally defined circumstances. These standards have changed over time and were not always codified in the national law, so older watches which bear the mark Swiss made may not necessarily meet the current legal definition.
It is an anthropogenic (man-made) fluorosurfactant, now regarded as a global pollutant. PFOS was the key ingredient in Scotchgard, a fabric protector made by 3M, and related stain repellents. The acronym "PFOS" refers to the parent sulfonic acid and to various salts of perfluorooctanesulfonate. These are all colorless or white, water-soluble ...
PFO may refer to: Patent foramen ovale – a blood-flow pathway between a human heart's atriums, normally naturally closed after birth Personal Freedom Outreach – an Evangelical organization opposing cults
A variable-speed drive (VSD) air compressor is an air compressor that takes advantage of variable-speed drive technology. This type of compressor uses a special drive to control the speed ( RPM ) of the unit, which in turn saves energy compared to a fixed speed equivalent. [ 1 ]
VSD – variable-speed drive; VSI – versatile seismic imager (Schlumberger VSP tool) [32] VSP – vertical seismic profile; VSPRO – vertical seismic profile; VTDLL – vertical thickness dual laterolog; VTFDC – vertical thickness FDC CNL log; VTISF – vertical thickness ISF log; VWL – velocity well log; VXT – vertical christmas tree
Balloon septostomy is the widening of a foramen ovale, patent foramen ovale (PFO), or atrial septal defect (ASD) via cardiac catheterization (heart cath) using a balloon catheter. This procedure allows a greater amount of oxygenated blood to enter the systemic circulation in some cases of cyanotic congenital heart defect ( CHD ).
Switzerland lies between latitudes 45° and 48° N, and longitudes 5° and 11° E. It contains three basic topographical areas: the Swiss Alps to the south, the Swiss Plateau or Central Plateau, and the Jura mountains on the west. The Alps are a mountain range running across the central and south of the country, constituting about 60% of the ...
The Voith Schneider propeller was originally a design for a hydro-electric turbine. [2] Its Austrian inventor, Ernst Schneider, had a chance meeting on a train with a manager at Voith's subsidiary St. Pölten works; this led to the turbine being investigated by Voith's engineers, who discovered that although it was no more efficient than other water turbines, Schneider's design worked well as ...