Results 31 to 40 of about 868,974 (345)

Systematic front distortion and presence of consecutive fronts in a precipitation system [PDF]

open access: yes, 2006
A new simple reaction-diffusion system is presented focusing on pattern formation phenomena as consecutive precipitation fronts and distortion of the precipitation front.The chemical system investigated here is based on the amphoteric property of ...
Izsák, F.   +3 more
core   +4 more sources

Chemical Phenomena Produced by Electricity [PDF]

open access: yesScientific American, 1878
n ...
openaire   +2 more sources

Mutual Influence of Some Flavonoids and Classical Nonionic Surfactants on Their Adsorption and Volumetric Properties at Different Temperatures

open access: yesMolecules, 2022
Due to the increasing practical use of mixtures of flavonoids with nonionic surfactants the presented studies were based on the measurements of surface tension and conductivity of aqueous solution of the quercetin (Q) and rutin (Ru) in the mixtures with ...
Anna Taraba   +3 more
doaj   +1 more source

Rehydrogenation of Sodium Borates to Close the NaBH4-H2 Cycle: A Review

open access: yesEnergies, 2021
In 2007, the US Department of Energy recommended a no-go on NaBH4 hydrolysis for onboard applications; however, the concept of a NaBH4-H2-PEMFC system has the potential to become a primary source for on-demand power supply.
Helder X. Nunes   +3 more
doaj   +1 more source

Extraction of Bioactive Compounds from C. vulgaris Biomass Using Deep Eutectic Solvents

open access: yesMolecules, 2023
C. vulgaris microalgae biomass was employed for the extraction of valuable bioactive compounds with deep eutectic-based solvents (DESs). Particularly, the Choline Chloride (ChCl) based DESs, ChCl:1,2 butanediol (1:4), ChCl:ethylene glycol (1:2), and ChCl:
Maria Myrto Dardavila   +7 more
doaj   +1 more source

Critical Properties and Acentric Factors of Pure Compounds Modelling Based on QSPR-SVM with Dragonfly Algorithm [PDF]

open access: yesKemija u Industriji, 2021
This work aimed to model the critical pressure, temperature, volume properties, and acentric factors of 6700 pure compounds based on five relevant descriptors and two thermodynamic properties.
Mohammed Moussaoui   +4 more
doaj   +1 more source

The Engineerization of Physical and Chemical Phenomena

open access: yesCoatings, 2022
There are a number of concepts in materials science that are only ambiguously described in the literature and/or are not completely understood [...]
openaire   +2 more sources

Slowly modulated oscillations in nonlinear diffusion processes [PDF]

open access: yes, 1977
It is shown here that certain systems of nonlinear (parabolic) reaction-diffusion equations have solutions which are approximated by oscillatory functions in the form R(ξ - cτ)P(t^*) where P(t^*) represents a sinusoidal oscillation on a fast time scale t*
Cohen, Donald S.   +2 more
core   +1 more source

Thermodynamic Efficiency in Dissipative Chemistry [PDF]

open access: yes, 2019
Chemical processes in closed systems are poorly controllable since they always relax to equilibrium. Living systems avoid this fate and give rise to a much richer diversity of phenomena by operating under nonequilibrium conditions.
Esposito, Massimiliano   +2 more
core   +2 more sources

Adsorption Properties of Hydrocarbon and Fluorocarbon Surfactants Ternary Mixture at the Water-Air Interface

open access: yesMolecules, 2021
Measurements were made of the surface tension of the aqueous solutions of p-(1,1,3,3-tetramethylbutyl) phenoxypoly(ethylene glycols) having 10 oxyethylene groups in the molecule (Triton X-100, TX100) and cetyltrimethylammonium bromide (CTAB) with Zonyl ...
Bronisław Jańczuk   +2 more
doaj   +1 more source

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