Results 21 to 30 of about 505,352 (366)
Digital radiography image quality evaluation using various phantoms and software
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas +4 more
wiley +1 more source
Polydisperse hard spheres at a hard wall [PDF]
The Journal of Chemical Physics, 2004 The structural properties of polydisperse hard spheres in the presence of a hard wall are investigated via Monte Carlo simulation and density functional theory (DFT). Attention is focused on the local density distribution ρ(σ,z), measuring the number density of particles of diameter σ at a distance z from the wall.
Buzzacchi, M. +2 more
openaire +6 more sources
Investigation of microstructural evolution of gas-assisted metal injection molded and sintered Mg-0.5Ca alloy [PDF]
Science of Sintering, 2022 In this study, Mg-0.5Ca alloy was produced in a newly designed unit during the metal injection molding process. 40μmD90 Mg powder and 500nmD90 Ca powder were used in accordance with injection molding and powder sintering rules.
Cicek Bunyamin +3 more
doaj +1 more source
Crystals, 2017 There is expanded interest in the long-standing subject of the hardness properties of materials. A major part of such interest is due to the advent of nanoindentation hardness testing systems which have made available orders of magnitude increases in ...
Ronald W. Armstrong +2 more
doaj +1 more source
Proceedings. Thirteenth Annual IEEE Conference on Computational Complexity (Formerly: Structure in Complexity Theory Conference) (Cat. No.98CB36247), 1999 AbstractWe investigate the frequency of complete sets for various complexity classes within EXP under several polynomial-time reductions in the sense of resource-bounded measure. We show that these sets are scarce: The sets that are ⩽pnα−tt-complete for NP, the levels of the polynomial-time hierarchy, and PSPACE have p2-measure zero for any constant ...
Harry Buhrman, D. van Melkebeek
openaire +3 more sources
Applied Sciences, 2019 Hardness is the most commonly searched timbral attribute within freesound.org, a commonly used online sound effect repository. A perceptual model of hardness was developed to enable the automatic generation of metadata to facilitate hardness-based ...
Andy Pearce, Tim Brookes, Russell Mason
doaj +1 more source
Hardness relationship between eNM3A10 and conventional hardness scales
Measurement: Sensors, 2021 Small ball rebound hardness eNM3A10 is a next-generation rebound hardness test with features not existing in conventional rebound hardness tests: reduced mass effect of hardness and satisfying the similarity rule of hardness (Minimum thickness of steel ...
Takashi Yamamoto +2 more
doaj
Studying Hardness Meter Spring Strength to Understand Hardness Distribution on Body Surfaces
Journal of Acupuncture & Meridian Studies, 2017 Introduction: For developing a hardness multipoint measurement system for understanding hardness distribution on biological body surfaces, we investigated the spring strength of the contact portion main axis of a biological tissue hardness meter (product
Yoshitaka Arima
doaj +1 more source
Enhanced Hardness in High‐Entropy Carbides through Atomic Randomness
Advanced Theory and Simulations, 2020 High‐entropy carbides (HECs) are of great interest as they are promising candidates for ultra‐high‐temperature and high‐hardness applications. To discover carbides with enhanced yield strength and hardness, mechanism‐based design approaches are needed ...
Yichen Wang +5 more
semanticscholar +1 more source
On the hardness of boron (III) oxide [PDF]
Journal of Superhard Materials, 30 [1] 71-72 (2008), 2011 Our findings show that the hardness of glass-like B2O3 is of about 1.5 GPa, while the hardness of the high-pressure phase is higher by a factor of 10 (16(5) GPa) and comparable with the hardness (16 GPa) of the WC-10% Co hard alloy.
arxiv +1 more source