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Dynamic hardness of wood - measurements with an automated portable hardness tester
(Walter De Gruyter Gmbh, 2017-05-01)
A research group on forest products from School of Agriculture - Sao Paulo State University. Brazil developed a portable hardness tester for wood, which is based on a displacement transducer and an embedded electronic ...
Portable Hardness tester for timber classification
(2010-12-01)
Hardness is a property largely used in material specifications, mechanical and metallurgical research and quality control of several materials. Specifically for timber, Janka hardness is a simple, quick and easy test, with ...
Radiographic method for measuring the continuum hard X-ray output spectrum of a Plasma Focus device
(Elsevier Science, 2009-12)
A radiographic method is proposed and then applied to infer the continuum part of the hard X-ray spectrum of a 4.7 kJ Plasma Focus from differential absorption measurements on metals. Copper, nickel, titanium and silver ...
Comparison of Methods for Evaluating Mineral Loss: Hardness versus Synchrotron Microcomputed Tomography
(Karger, 2009-01-01)
This study analyzed degrees of demineralization in bovine enamel using synchrotron microcomputed tomography (SMCT) and hardness measurements (Knoop hardness number, KHN). For 5 days, 40 bovine enamel blocks were individually ...
Comparison of Methods for Evaluating Mineral Loss: Hardness versus Synchrotron Microcomputed Tomography
(Karger, 2009-01-01)
This study analyzed degrees of demineralization in bovine enamel using synchrotron microcomputed tomography (SMCT) and hardness measurements (Knoop hardness number, KHN). For 5 days, 40 bovine enamel blocks were individually ...
Study of the Orbital Hardness and the Kohn-Sham Radius on Single Monoatomic Anions
(WILEY, 2011)
Within the Kohn-Sham framework and for a series of single charged monatomic anions, the orbital hardness is calculated as a change in the frontier eigenvalue, which is equivalent to integrate the local hardness function ...
Portable Hardness tester for timber classification
(2010-12-01)
Hardness is a property largely used in material specifications, mechanical and metallurgical research and quality control of several materials. Specifically for timber, Janka hardness is a simple, quick and easy test, with ...
Hardness evaluation of prosthetic silicones containing opacifiers following chemical disinfection and accelerated aging
(2010-07-01)
We evaluated the effects of disinfection and aging on the hardness of silicones containing opacifiers and intended for use in facial prosthetics. A total of 90 samples were produced using a cylindrical metal mold 3 mm in ...
Hardness evaluation of prosthetic silicones containing opacifiers following chemical disinfection and accelerated aging
(2010-07-01)
We evaluated the effects of disinfection and aging on the hardness of silicones containing opacifiers and intended for use in facial prosthetics. A total of 90 samples were produced using a cylindrical metal mold 3 mm in ...