Results 11 to 20 of about 423,639 (283)
The influence of heterogenous porosity on silicon nitride/steel wear in lubricated rolling contact [PDF]
, 2000 Heterogeneous porosity is detected on the surface and subsurface of hot isostatically pressed (HIPed) silicon nitride spherical rolling elements. The extent of the localised porosity accounts for an area of 6% of the rolling element surface and 4% of the
Kang, J, Hadfield, M
core +6 more sources
The relationship between porosity and thermal conductivity of concrete [PDF]
, 1990 This thesis reports the details and results of an experimental study into the effect of porosity on the thermal conductivity of lightweight and normal-weight concretes.
Ganjian, Esmaiel
core +6 more sources
Engineering Porosity-Tuned Chitosan Beads: Balancing Porosity, Kinetics, and Mechanical Integrity [PDF]
ACS OmegaChitosan, a cationic natural polysaccharide derived from the deacetylation of chitin, is known for its solubility in diluted acidic solutions, biodegradability, biocompatibility, and non-toxicity. This study introduces three innovative methods to prepare
Astha Upadhyay +2 more
doaj +2 more sources
Porosity, -porosity and measures [PDF]
Nonlinearity, 2002 We show that given a σ-finite Borel regular measure μ in a metric space X, every σ-porous subset of X of finite measure can be approximated by strongly porous sets. It follows that every σ-porous set is the union of a σ-strongly porous set and a μ-null set.
M E Mera, M Mor n, D Preiss, L Zaj cek
openaire +1 more source
Effects of ultrasound on polymeric foam porosity [PDF]
, 2008 A variety of materials require functionally graded cellular microstructures whose porosity is engineered to meet specific applications (e.g. mimic bone structure for orthopaedic applications; fulfil mechanical, thermal or acoustic constraints in ...
Jonathan R. Corney (7204907) +4 more
core +4 more sources
MOLDING PROCEDURE FOR PERVIOUS CONCRETE SPECIMENS BY DENSITY CONTROL
Case Studies in Construction Materials, 2021 Pervious concrete (PC) is a special concrete with the main objective of surface runoff management, due to its hydraulic performance and infiltration capacity. Currently, the standards and guidelines (existing) do not adequately standardize the production
Kathleen Dall Bello De Souza Risson +5 more
doaj +1 more source
Influence of activators on constitutes of diffusion layer at boronizing pressed samples from iron powder [PDF]
Hemijska Industrija, 2008 In this paper, results of experimental investigation which contributes to study of quantitative changes of porosity during chemical-thermical process, apropos boronizing of pressed samples from iron powder, with variation of boronizing mixture ...
Požega Emina D., Ivanov Svetlana Lj.
doaj +1 more source
Comparison of the approaches to assessing the compressibility of the pore space
Записки Горного института, 2022 Integral and differential approaches to determining the volumetric compression of rocks caused by changes in the stress state are considered. Changes in the volume of the pore space of rocks are analyzed with an increase in its all-round compression ...
Vitaly S. Zhukov, Yuri O. Kuzmin
doaj +1 more source
Adsorption Science & Technology, 2008 Wastewater from nuclear plants contains oxalic acid, a chelating compound used to remove surface activity. This forms complexes with radioactive cations, thereby impeding their removal by conventional techniques. In this study, oxalic acid was removed by
Narasimhan Gokulakrishnan +2 more
doaj +1 more source
Tensor compaction of porous rocks: theory and experimental verification
Записки Горного института, 2022 Compaction in sedimentary basins has been traditionally regarded as a one-dimensional process that ignores inelastic deformation in directions orthogonal to the active load.
Ivan A. Panteleev +5 more
doaj +1 more source