Results 21 to 30 of about 220,610 (269)

Self-aggregation of soil humic acids with respect to their structural characteristics [PDF]

open access: yesJournal of the Serbian Chemical Society, 2022
The main goal of this work was to estimate the influence of carboxyl and phenolic groups, as well as aromatic, aliphatic and polysaccharide components, on the soil humic acids (HA) self-aggregation process.
Jovanović Uroš D.   +4 more
doaj   +1 more source

FRACTIONAL DERIVATIVE AS FRACTIONAL POWER OF DERIVATIVE [PDF]

open access: yesInternational Journal of Mathematics, 2007
Definitions of fractional derivatives as fractional powers of derivative operators are suggested. The Taylor series and Fourier series are used to define fractional power of selfadjoint derivative operator. The Fourier integrals and Weyl quantization procedure are applied to derive the definition of fractional derivative operator.
openaire   +2 more sources

Identification of biologically active fractions in the dermal secretions of the genus Bombina (Amphibia: Anura: Bombinatoridae)

open access: yesActa Herpetologica, 2020
Amphibian skin secretions have long been considered a convenient and useful natural source of bioactive compounds, but a comprehensive study of the effects of their dermal secretions on diverse parameters of the hemostasis system has not yet been carried
Iryna Udovychenko   +4 more
doaj   +1 more source

Coherence fraction

open access: yesQuantum Information Processing, 2019
The concept of entanglement fraction is generalized to define coherence fraction of a quantum state. Precisely, it quantifies the proximity of a quantum state to maximally coherent state and it can be used as a measure of coherence. Coherence fraction has a connection with $l_1$-norm coherence and provides the criteria of coherence distillability ...
Sumana Karmakar   +4 more
openaire   +2 more sources

Impact of dry, particle-size fractionation on protein and amino acid content of three seaweed species

open access: yesInternational Journal of Food Properties, 2022
Market demand for “clean and green” food products is increasing, and so there is growing opportunity for the seaweed aquaculture industry to take a position as a key food producer in this area.
Laura E Healy   +7 more
doaj   +1 more source

FRAKSINASI PROTEIN KAPANG LAUT Xylaria psidii KT30 DAN SITOTOKSISITASNYA TERHADAP SEL HeLa [Fractionation of Proteins of Marine Fungus Xylaria psidii KT30 and their Cytotoxicity against HeLa Cells]

open access: yesJurnal Teknologi dan Industri Pangan, 2014
Cervical cancer is the most common cause of death for Indonesian women after human breast cancer. One of the efforts of cancer treatment is the utilization of natural compounds.
Mita Gebriella Inthe   +2 more
doaj   +1 more source

Spatial and temporal variations of fractionation of stable isotopes in East-Antarctic snow

open access: yesJournal of Glaciology, 2021
Stable isotope ratios (δ18O and δD) in Antarctic snow and ice are basic proxy indices of climate in ice core studies. The relation between the ratios has important indicative significance for moisture sources.
Chuanjin Li   +15 more
doaj   +1 more source

Effect of Operating Conditions and Fructans Size Distribution on Tight Ultrafiltration Process for Agave Fructans Fractionation: Optimization and Modeling

open access: yesMembranes, 2022
The objective of this work was to evaluate the effect of operating conditions and fructans size distribution on the tight Ultrafiltration process for agave fructans fractionation.
Noe Luiz-Santos   +5 more
doaj   +1 more source

FRACTIONAL SUPERSYMMETRY [PDF]

open access: yesModern Physics Letters A, 1995
A symmetry between bosonic coordinates and some Grassmannian-type coordinates is presented. Commuting two of these Grassmannian-type variables results in an arbitrary phase factor (not just a minus sign). This symmetry is also realized at the level of the field theory.
openaire   +2 more sources

The fractional and mixed-fractional CEV model [PDF]

open access: yesJournal of Computational and Applied Mathematics, 2020
The continuous observation of the financial markets has identified some stylized facts which challenge the conventional assumptions, promoting the born of new approaches. On the one hand, the long-range dependence has been faced replacing the traditional Gauss-Wiener process (Brownian motion), characterized by stationary independent increments, by a ...
openaire   +2 more sources

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