New modification of the hestenes-stiefel with strong wolfe line search [PDF]
, 2021 . The method of the nonlinear conjugate gradient is widely used in solving large-scale unconstrained optimization since been proven in solving optimization problems without using large memory storage.
Basri, Srimazzura +2 more
core +1 more source
Mechanical Properties and Air Permeability of Concrete Containing Waste Tires Extracts
, 2021 The safe disposal of waste tires has been seen as having a negative impact on the environment.
Ibrahim G. Shaaban +5 more
semanticscholar +1 more source
Relationship between air diffusivity and permeability coefficients of cementitious materials
RILEM Technical Letters, 2020 In this study, the relationship between air diffusivity and permeability in cementitious materials was investigated to theoretically investigate the relationship between diffusion and air permeability coefficients.
Yuya Sakai
doaj +1 more source
Effect of air permeability on stability of supersonic parachute
Aviation, 2021 A compressible air permeability model is developed to simulate the aerodynamic performance of the supersonic porous canopy. And a single-degree-of-freedom model is applied to analyse the static stability of the parachute.
Xue Yang
doaj +1 more source
New testing device for air permeability
Communications in Development and Assembling of Textile Products, 2023 Air permeability is used to characterize textile fabrics with respect to their usability as a garment or filter, airbag or parachute. It depends on the fabric’s porosity, air voids in the fabric, yarn specifications, thickness and other parameters ...
Lilia Sabantina, Andrea
doaj +7 more sources
Influence of order-disorder transitions on oxygen permeability through selected nonstoichiometric perovskite-type oxides [PDF]
, 1993 New results on the oxygen permeability of perovskite-type oxides SrCo0.8B'0.2O3¿¿ (with B'=Cr, Fe, Co and Cu) and La0.6Sr0.4CoO3¿¿ are presented. The occurrence of order-disorder transitions at elevated temperatures (790¿940°C) in these phases has been ...
Bouwmeester, H.J.M. +3 more
core +10 more sources
Multilayer cotton fabric porosity and its infl uence on permeability properties [PDF]
Tekstilec, 2018 Apart from their soft feel and good water absorbency, cotton fabrics are also characterised by good heat conductivity, air permeability and breathing. By increasing the open surface of one-layer fabrics, their air and water vapour permeability, and heat ...
Klara Kostajnšek, Krste Dimitrovski
doaj +1 more source
The impact of compaction, moisture content, particle size and type of bulking agent on initial physical properties of sludge-bulking agent mixtures before composting [PDF]
, 2012 This study aimed to experimentally acquire evolution profiles between depth, bulk density, Free Air Space (FAS), air permeability and thermal conductivity in initial composting materials.
Benoist, Jean-Claude +4 more
core +4 more sources
Analysis of Air Permeability of Insulated Masonry Walls
Energies, 2020 Recently, the construction of external ventilated walls has become popular for public and office buildings. These blocks are used without internal rendering because of their good interior surface, stable dimensions and various filling of masonry joints ...
Valdemaras Geležiūnas +4 more
doaj +1 more source
The comparative study of nursing pads by electrospun cellulose acetate, polyethylene oxide and thermoplastic polyurethane nanofibers [PDF]
, 2018 This study summarizes the general information about nursing pads and novel electrospun nanofiber mats as potential component for nursing pads. It also compares electrospun thermoplastic polyurethane (TPU), cellulose acetate (CA) and polyethylene oxide ...
Akduman, Çiğdem +2 more
core +1 more source