Results 31 to 40 of about 5,494,217 (358)

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

, 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., Lagzi, I., Ripszam, M., Volford, A.   +3 more
core   +4 more sources

Review on Microbubbles and Microdroplets Flowing through Microfluidic Geometrical Elements

Micromachines, 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, João B. L. M. Campos, João M. Miranda, José D. P. Araújo   +3 more
doaj   +1 more source

Slowly modulated oscillations in nonlinear diffusion processes [PDF]

, 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., Hoppensteadt, Frank C., Miura, Robert M.   +2 more
core   +1 more source

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

Molecules, 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, Anna Zdziennicka, Katarzyna Szymczyk, Bronisław Jańczuk   +3 more
doaj   +1 more source

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

Kemija 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, Abd-Elmouneïm Belhadj, Khaled Otmanine, Mounir Hammoudi   +3 more
doaj   +1 more source

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

Kemija 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, Maamar Laidi, Abdelmadjid El Bey, Salah Hanini, Mohamed Hentabli, Omar Khaldi, Mihoub Abderrahim   +6 more
doaj   +1 more source

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

Molecules, 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, Katarzyna Szymczyk, Anna Zdziennicka, Bronisław Jańczuk   +3 more
doaj   +1 more source

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

Molecules, 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, Katarzyna Szymczyk, Anna Zdziennicka   +2 more
doaj   +1 more source

Progress in understanding the four dominant intra-particle phenomena of lignocellulose pyrolysis: chemical reactions, heat transfer, mass transfer, and phase change

Green Chemistry, 2019
Four principal intra-particle phenomena occur in a highly concerted manner during the pyrolysis of lignocellulosic materials: heat transfer, mass transfer, chemical reactions, and phase changes.
M. B. Pecha, Jorge Iván Fernández Arbeláez, M. García-Pérez, F. Chejne, Peter N. Ciesielski   +4 more
semanticscholar   +1 more source

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

Molecules, 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, Sofia Pappou, Maria G. Savvidou, Vasiliki Louli, Petros Katapodis, Haralambos Stamatis, Kostis Magoulas, Epaminondas Voutsas   +7 more
doaj   +1 more source