Results 51 to 60 of about 451,537 (323)
Self-consolidating concrete homogeneity
Materiales de Construccion, 2007 Concrete instability may lead to the non-uniform distribution of its properties. The homogeneity of self-consolidating concrete in vertically cast members was therefore explored in this study, analyzing both resistance to segregation and pore structure ...
M. O. Valcuende, C. Parra, J. C. Jarque
doaj +1 more source
Thermal conductivity of silicon nanomeshes: Effects of porosity and roughness [PDF]
J. Appl. Phys. 115, 204306 (2014), 2014 We theoretically investigate thermal conductivity in silicon nanomeshes using Monte Carlo simulations of phonon transport. Silicon membranes of 100nm thickness with randomly located pores of 50nm diameter are considered. The effects of material porosity and pore surface roughness are examined.
arxiv +1 more source
Characterization and Analysis of Porosity and Pore Structures
, 2015 Porosity plays a clearly important role in geology. It controls fluid storage in aquifers, oil and gas fields and geothermal systems, and the extent and connectivity of the pore structure control fluid flow and transport through geological formations, as
L. Anovitz, D. Cole
semanticscholar +1 more source
Constraints on porosity and mass loss in O-star winds from modeling of X-ray emission line profile shapes [PDF]
, 2013 We fit X-ray emission line profiles in high resolution XMM-Newton and Chandra grating spectra of the early O supergiant Zeta Pup with models that include the effects of porosity in the stellar wind. We explore the effects of porosity due to both spherical and flattened clumps.
arxiv +1 more source
Transport in Porous Media, 2018 Reactive transport processes in a porous medium will often both cause changes to the pore structure, via precipitation and dissolution of biomass or minerals, and be affected by these changes, via changes to the material’s porosity and permeability.
Johannes Hommel, E. Coltman, H. Class
semanticscholar +1 more source
Revista Brasileira de Ciência do Solo, 2008 Este trabalho teve o objetivo de caracterizar os principais solos explorados com a cultura do melão na Chapada do Apodi - RN, no qual se refere aos aspectos físicos, visando fornecer subsídios para adequado manejo da cultura e do solo.
Jaedson Claudio Anunciato Mota +3 more
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Известия Томского политехнического университета: Инжиниринг георесурсов, 2021 Relevance. Analytical relationships between the reservoir properties of Western Siberia deposits make it possible to estimate permeability and potential well production rates.
Vyacheslav V. Mukhametshin +3 more
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Effect of Porosity and Crystallinity on 3D Printed PLA Properties
Polymers, 2019 Additive manufacturing (AM) is a promising technology for the rapid tooling and fabrication of complex geometry components. Among all AM techniques, fused filament fabrication (FFF) is the most widely used technique for polymers. However, the consistency
Y. Liao +6 more
semanticscholar +1 more source
Elasticity of Diametrically Compressed Microfabricated Woodpile Lattices
Advanced Engineering Materials, EarlyView.Modulus–porosity relationship is derived for woodpile lattices with struts under diametrical compression. The formula presented here that Young's modulus is proportional to the square of the volume fraction E˜ρ2$E \sim \left(\rho\right)^{2}$ is shown to be consistent with computations and laboratory experiments on 3D‐printed samples.
Faezeh Shalchy, Atul Bhaskar
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2015 A class of carboxyl and carboxylate ester-substituted dithiafulvene (DTF) derivatives and tetrathiafulvalene vinylogues (TTFVs) has been synthesized and their electronic and electrochemical redox properties were characterized by UV–vis spectroscopic and ...
Yunfei Wang, Yuming Zhao
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