Results 21 to 30 of about 934,272 (151)

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

Thermodynamic Parameters of Berberine with Kolliphor Mixtures Adsorption and Micellization

open access: yesMolecules, 2023
The poor solubility of berberine (Ber) in water limits its practical use. Its solubility can be increased, among other ways, by the addition of surfactants.
Magdalena Szaniawska   +3 more
doaj   +1 more source

Adsorption Properties and Composition of Binary Kolliphor Mixtures at the Water–Air Interface at Different Temperatures

open access: yesMolecules, 2022
The studies on the adsorption properties and composition of the adsorbed monolayer at the water–air interface of the binary Kolliphor® ELP (ELP) and Kolliphor® RH 40 (RH40) mixtures based on the measurements of the surface tension (γLV) of their aqueous ...
Magdalena Szaniawska   +3 more
doaj   +1 more source

Removal of heavy metals from synthetic wastewater using silica aerogel- activated carbon composite by adsorption method [PDF]

open access: yesJournal of Applied Research in Water and Wastewater, 2020
In this study, removal of heavy metals from synthetic wastewater has been investigated using silica aerogel-activated carbon composite. The synthesized adsorbent was characterized by FE-SEM, FTIR and BET techniques.
Mohammad Hesam Falsafi   +2 more
doaj   +1 more source

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

Review on Microbubbles and Microdroplets Flowing through Microfluidic Geometrical Elements

open access: yesMicromachines, 2020
Two-phase flows are found in several industrial systems/applications, including boilers and condensers, which are used in power generation or refrigeration, steam generators, oil/gas extraction wells and refineries, flame stabilizers, safety valves ...
Ana T. S. Cerdeira   +3 more
doaj   +1 more source

Wetting Properties of Rhamnolipid and Surfactin Mixtures with Triton X-165

open access: yesMolecules, 2022
The wetting properties of the rhamnolipid and surfactin mixtures with Triton X-165 were considered based on the contact angle measurements of their aqueous solution on the polytetrafluoroethylene (PTFE), polymethyl methacrylate (PMMA) and quartz (Q ...
Edyta Rekiel   +3 more
doaj   +1 more source

Treatment of Leachate from the Technical Landfill Centre Aïn Defla (Algeria) by Oxidation and Biosorption Process [PDF]

open access: yesKemija u Industriji, 2021
The aim of this study was the treatment of leachate from the Technical Landfill Centre Aïn Defla in Algeria, which presents a serious threat to the environment.
Brahim Feraoun   +3 more
doaj   +1 more source

Ternary Multicomponent Adsorption Modelling Using ANN, LS-SVR, and SVR Approach – Case Study [PDF]

open access: yesKemija u Industriji, 2021
The aim of this work was to develop three artificial intelligence-based methods to model the ternary adsorption of heavy metal ions {Pb2+, Hg2+, Cd2+, Cu2+, Zn2+, Ni2+, Cr4+} on different adsorbates {activated carbon, chitosan, Danish peat, Heilongjiang ...
Amina Yettou   +6 more
doaj   +1 more source

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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