Results 21 to 30 of about 1,573,981 (326)

Characterization of Surface Modified Phoenix sp. Fibers for Composite Reinforcement

open access: yesJournal of Natural Fibers, 2021
This paper reports the morphological, physical, chemical, mechanical and thermal properties of untreated and various chemically treated natural fibers extracted from the petioles of the Phoenix sp. plants.
G. Rajeshkumar
doaj   +1 more source

Difficulties in the Production of Ausferritic Nodular Cast Iron without Heat Treatment [PDF]

open access: yesArchives of Foundry Engineering, 2023
The paper presents results of tests carried out on ausferrite carbide matrix alloyed ductile cast iron. The ausferrite was obtained via addition of Cu and Mo alloying elements. This eliminated heat treatment from the alloy production cycle.
M. Stawarz, M. Lenert, K. Piasecki
doaj   +1 more source

Environmental Impact Assessment of Granite and Marble stone quarries Using RIAM and Iranian Leopold Matrix Methods [PDF]

open access: yesPizhūhish dar Bihdāsht-i Muḥīṭ., 2020
Background and Aim:Regardless of the positive economic effects, the adverse environmental impacts of mines make it necessary to assess environmental impacts.
zohre rahnamabargard   +3 more
doaj   +1 more source

Fast iterative solution of reaction-diffusion control problems arising from chemical processes [PDF]

open access: yes, 2012
PDE-constrained optimization problems, and the development of preconditioned iterative methods for the efficient solution of the arising matrix system, is a field of numerical analysis that has recently been attracting much attention.
Ascher U.   +8 more
core   +2 more sources

Graphene Oxide Derivatives and Their Nanohybrid Structures for Laser Desorption/Ionization Time-of-Flight Mass Spectrometry Analysis of Small Molecules

open access: yesNanomaterials, 2021
Matrix-assisted laser desorption/ionization (MALDI) has been considered as one of the most powerful analytical tools for mass spectrometry (MS) analysis of large molecular weight compounds such as proteins, nucleic acids, and synthetic polymers thanks to
Seung-Woo Kim   +2 more
doaj   +1 more source

A Random Matrix Model for Color Superconductivity at Zero Chemical Potential [PDF]

open access: yes, 1999
We discuss random matrix models for the spontaneous breaking of both chiral and color symmetries at zero chemical potential and finite temperature. Exploring different Lorentz and gauge symmetric color structures of the random matrix interactions, we ...
A. Chodos   +31 more
core   +3 more sources

Comparing matrix models and QCD lattice data with chemical potential [PDF]

open access: yes, 2003
We present a quantitative analysis of the microscopic Dirac spectrum which is complex in the presence of a non-vanishing quark chemical potential. Data from quenched SU(3) lattice simulations for different volumes V and small values of the chemical ...
Akemann   +18 more
core   +5 more sources

The Risk Assessment System of Chemical Industry Park based on Analytic Hierarchy Process

open access: yesChemical Engineering Transactions, 2017
The research on risk control of chemical industrial park is one of the most important research contents in the management of chemical enterprises. As the chemical industry park is a very complex system, the risk control involves many problems, and it is ...
Qian Liang, Yujie He
doaj   +1 more source

Impact of Chemical Treatment on Surface Modification of Agave Americana Fibres for Composite Application – A Futuristic Approach

open access: yesJournal of Natural Fibers, 2023
As a futuristic approach an attempt has been made in this study to improve the compatibility between reinforcement and polymer matrix in composites by various chemical treatments.
S. Thamarai Selvi   +3 more
doaj   +1 more source

Detecting intrinsic slow variables in stochastic dynamical systems by anisotropic diffusion maps [PDF]

open access: yes, 2009
Nonlinear independent component analysis is combined with diffusion-map data analysis techniques to detect good observables in high-dimensional dynamic data.
A. Singer   +8 more
core   +3 more sources

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