Results 1 to 10 of about 76,812 (163)

Lignin Valorization for Added-Value Chemicals: Kraft Lignin versus Lignin Fractions

open access: yesChemEngineering, 2023
Lignin is a raw material that can potentially be converted into valuable compounds through depolymerization reactions in addition to its use as a polymer or material.
Carina A E Costa   +2 more
exaly   +3 more sources

Intelligent Measurement of Void Fractions in Homogeneous Regime of Two Phase Flows Independent of the Liquid Phase Density Changes

open access: yesFractal and Fractional, 2023
Determining the amount of void fraction of multiphase flows in pipelines of the oil, chemical and petrochemical industries is one of the most important challenges.
Abdullah M Iliyasu   +2 more
exaly   +3 more sources

Complete Homogeneous Symmetric Polynomials with Repeating Variables

open access: yesMathematics
In this paper, we consider complete homogeneous symmetric polynomials evaluated for variables repeated with given multiplicities; in other words, we consider polynomials obtained from complete homogeneous polynomials by identifying some subsets of their ...
Luis Angel González-Serrano   +1 more
exaly   +3 more sources

Aerosol–cloud interactions: the representation of heterogeneous ice activation in cloud models [PDF]

open access: yesAtmospheric Chemistry and Physics, 2021
The homogeneous nucleation of ice in supercooled liquid-water clouds is characterized by time-dependent freezing rates. By contrast, water phase transitions induced heterogeneously by ice-nucleating particles (INPs) are described by time-independent ice ...
B. Kärcher, C. Marcolli
doaj   +1 more source

Fractionation of biological micro-particles in the field of gravity and the field of centrifugal forces [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2019
The paper presents the basic relationships describing the state of boundary equilibrium of fractions isolated in the process of fractionation of binary biological mixtures formed on the warp of homogeneous base solution in the gravitation field and in ...
Andrzej Górka
doaj   +1 more source

Modelling the hydromechanical behaviour of expansive granular mixtures upon hydration [PDF]

open access: yesE3S Web of Conferences, 2020
Bentonite pellet-powder mixtures are candidate sealing materials in radioactive waste disposal concepts. The mixture is installed in galleries in dry state as a granular material.
Darde Benjamin   +6 more
doaj   +1 more source

Numerical Homogenization of Heterogeneous Fractional Laplacians [PDF]

open access: yesMultiscale Modeling & Simulation, 2018
In this paper, we develop a numerical multiscale method to solve the fractional Laplacian with a heterogeneous diffusion coefficient. When the coefficient is heterogeneous, this adds to the computational costs. Moreover, the fractional Laplacian is a nonlocal operator in its standard form, however the Caffarelli-Silvestre extension allows for a ...
Donald L. Brown   +2 more
openaire   +3 more sources

Identification of protein fractions of milk cows casein complex [PDF]

open access: yesThe Ukrainian Biochemical Journal, 2015
To date, dozens of biologically active peptides formed during proteolysis of casein fractions have been discovered. The use of these peptides is closely related to the necessity of their rapid identification.
А. V. Iukalo
doaj   +1 more source

Investigation of the Influence of the Mixing Process on the Powder and Component Properties during Cyclic Reuse of a Polyamide 12 Sinter Material in Selective Laser Sintering

open access: yesPowders, 2023
Selective laser sintering (SLS) with polymers is currently in transition to the production of functional components. Nevertheless, the potential to revolutionize conventional production processes is confronted by newly imposed requirements regarding ...
Tom Eggers, Frank von Lacroix
doaj   +1 more source

Home - About - Disclaimer - Privacy