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Void volume fraction of granular scaffolds
Small, 2022AbstractVoid volume fraction (VVF) of granular biomaterials is a global measurement frequently used to characterize void space. There is currently no gold standard for measuring the VVF of granular scaffolds made in lab. To help the biomaterials field, we provide a library of different simulated scaffolds with known VVF for easy look-up.
Lindsay Riley +7 more
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Neurology India, 2023
Arteriovenous malformations (AVMs) are common intracranial vascular anomalies. Common treatment modalities used to manage AVMs are surgical excision, embolization, and stereotactic radiosurgery (SRS). Large AVMs are defined as AVMs larger than 10 cm3 and pose a therapeutic challenge with high rates of treatment-related ...
Kanwaljeet, Garg, Manmohan, Singh
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Arteriovenous malformations (AVMs) are common intracranial vascular anomalies. Common treatment modalities used to manage AVMs are surgical excision, embolization, and stereotactic radiosurgery (SRS). Large AVMs are defined as AVMs larger than 10 cm3 and pose a therapeutic challenge with high rates of treatment-related ...
Kanwaljeet, Garg, Manmohan, Singh
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Determination of Fiber Volume Fractions by Optical Numeric Volume Fraction Analysis
Journal of Reinforced Plastics and Composites, 1989A method for determining the fiber volume fraction in continuous fiber composites by automatically counting the fiber ends per unit area in digitized microscope images of representative cross sections has been developed. Since fiber counts are digital variables, the accuracy of the method is essentially independent of small variations in microscope ...
Mark C. Waterbury, Lawrence T. Drzal
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Estimating curvature from volume fractions
Computers & Structures, 2005An interface represented by discrete, abruptly-varying volume fractions poses particular challenges for the accurate estimation of interfacial curvature. Most approaches within a volume-of-fluid (VOF) framework do not estimate curvature directly from the VOF function, but instead from a smoothly-varying function derived from some mapping (e.g ...
Sharen J. Cummins +2 more
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Absorbed fractions for electrons in ellipsoidal volumes
Physics in Medicine and Biology, 2010We applied a Monte Carlo simulation in Geant4 in order to calculate the absorbed fractions for monoenergetic electrons in the energy interval between 10 keV and 2 MeV, uniformly distributed in ellipsoids made from soft tissue. For each volume, we simulated a spherical shape, four oblate and four prolate ellipsoids, and one scalene shape.
AMATO, ERNESTO +2 more
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High volume fraction carbon nanotube–epoxy composites
Nanotechnology, 2009A versatile processing technique for fabricating epoxy nanocomposites with a high weight fraction of oxidized multi-walled carbon nanotubes is presented. Thin carbon nanotube based preforms were prepared through an oxidation-filtration protocol and then immersed in a pre-polymerized epoxy/curing agent solution in acetone.
Z, Spitalsky +5 more
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Extracellular Volume Fractions in Chronic Myocardial Infarction
Investigative Radiology, 2012The aim of this study was to assess and delineate chronic myocardial infarction (CMI) using precontrast and postcontrast T1 mapping techniques including quantification of extracellular volume fractions (ECVs).A total of 26 patients with CMI were examined at 1.5 T applying a modified Look-Locker Inversion Recovery sequence before and 10 minutes after ...
Kerstin Ulrike, Bauner +7 more
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Volume Fraction Effects in Electroacoustic Measurements
Journal of Colloid and Interface Science, 2001We measured the dynamic mobility of a polystyrene latex at 1 MHz as a function of volume fraction using the ESA-8000. The volume fraction dependence is compared with a semiempirical equation as well as with some theoretical predictions. It turns out that our polystyrene latex exhibits a volume fraction dependence much weaker than that predicted by any ...
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Absorbed fractions for photons in ellipsoidal volumes
Physics in Medicine and Biology, 2009We studied through Monte Carlo simulation in Geant4 the absorbed fractions for photons, characterized by energies ranging from 10 keV to 1000 keV, which can be emitted by gamma radionuclides uniformly distributed in ellipsoidal volumes of soft tissue. The same analytical relationship between absorbed fraction and the 'generalized radius' as introduced ...
AMATO, ERNESTO +2 more
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Critical Volume Fraction: Second Model
Science, 1999With respect to the report I co-authored with S. F. Ackley and V. I. Lytle, “The percolation phase transition in sea ice” (18 Dec. 1998, p. [2238][1]), I would like to thank Jay Janzen for making me aware of his work on the critical volume fraction ϕc for conduction in a compressed powder of large polymer particles and much smaller metal particles. Had
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