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High-pressure torsion (HPT) is a severe plastic deformation technique used to refine the microstructure of materials by applying both high pressure and torsional strain. [1] HPT involves compressing a material between two anvils while simultaneously rotating one of the anvils, inducing shear deformation. [ 2 ]
During the constrained HPT process, the material experiences shear deformation between a fixed and a rotating anvil, without losing its original dimensions. High pressure torsion (HPT) can be traced back to the experiments that won Percy Bridgman the 1946 Nobel Prize in Physics, though its use in metal processing is considerably more recent. In ...
The CPT code revisions in 2013 were part of a periodic five-year review of codes. Some psychotherapy codes changed numbers, for example 90806 changed to 90834 for individual psychotherapy of a similar duration. Add-on codes were created for the complexity of communication about procedures.
During the early 1960s, a wholly owned subsidiary Hughes Dynamics was created, that offered consulting and services in data processing, information technology, credit information processing, and advanced business techniques and management methods. [4] After some $9.5 million of Hughes Tool money was invested in it, results were deemed not ...
History of present illness: H&P: history and physical examination (which very often are considered as a pair) HPA: hypothalamic-pituitary-adrenal axis: HPETE: hydroxyeicosatetraenoic acid: HPF: high-power field HPI H/oPI: history of the present illness: HPOA: hypertrophic pulmonary osteoarthropathy hPL
The use of Level III codes was discontinued on December 31, 2003, in order to adhere to consistent coding standards. [3]: 2 Level III codes were different from the modern CPT Category III codes, which were introduced in 2001 to code emerging technology. [4]
In the early 1950s the company became the first drill manufacturer in Europe to introduce the steam temper treatment to its products. [3] In 1975 SKF acquired the company [4] and, in the process, became the world's largest manufacturer of High-Speed Steel cutting tools. In 1992 Dormer was acquired by the Sandvik group. [5]
Interventional pain management or interventional pain medicine is a medical subspecialty defined by the National Uniforms Claims Committee (NUCC) as, " invasive interventions such as the discipline of medicine devoted to the diagnosis and treatment of pain related disorders principally with the application of interventional techniques in managing sub acute, chronic, persistent, and intractable ...