Gold crowns are one of the classic types of dental crowns used in dentistry. There are two types of gold crowns used to restore a tooth. The full gold crown is made entirely from gold or gold alloy. A porcelain fused to metal crown (PFM) is made from a combination of gold and porcelain. In regards to the gold, there are three types of alloy used for fabricating gold crowns: High Noble Alloy - Precious Metal - Made from, at a minimum, 60% high noble alloy. This includes gold, platinum and palladium.
Artifact: Analysis Model An object model describing the realization of use cases, and which serves as an abstraction of the Artifact: Design Model. The Analysis Model contains the results of use case analysis, instances of the Artifact: Analysis Class. The Analysis Model is an optional artifact (see Tailoring). UML representation: Model, stereotyped as analysis model.
A distortion analyzer is an electronic test instrument that measures the accuracy of an electronic circuit at reproducing a wave.For instance, an audio amplifier might have a sine wave input to it, and the distortion analyzer measures how close the output is to a sine wave.If the output is clipped, the wave will be distorted, and the analyzer will measure the amount of harmonics present.mplifiers will frequently have a Total Harmonic Distortion plus Noise specification which is an accurate term for the quantity measured by a distortion analyzer. There are many manufacturers of distortion analyzers. The Hewlett-Packard models 331a and 333 are laboratory standard instruments.