Results 31 to 40 of about 141,089 (307)

A two-dimensional mathematical model of non-linear dual-sorption

open access: yes, 2005
Background: Certain drugs, for example scopolamine and timolol, show non-linear kinetic behavior during permeation process. This non-linear kinetic behavior is due to two mechanisms; the first mechanism being a simple dissolution producing mobile and ...
George K, George, K, K George
core   +1 more source

Photocatalytic activity of spectro-pure titanium dioxide: Effects of crystalline structure, specific surface area and sorption properties

open access: yesInternational Journal of Photoenergy, 2003
Dispersed optically pure anatase, rutile and two-phase samples of titanium dioxide were prepared using a sol-gel technique. In particle of two-phase samples, the anatase nuclei are surrounded by a rutile envelope.
Evgeny I. Kapinus   +4 more
doaj   +1 more source

Mechanisms of Oxidative Stress an d Vessels Sclerotic Transformation Initiated by Uremic Toxin Indoxyl Sulfate

open access: yesEurasian Chemico-Technological Journal, 2016
The microspherical carbonaceous adsorbents SCN and AST-120 for oral use prevent chronic disease progression, delay dialysis initiation, lessen atherosclerosis development in kidney and decreased of overall and cardiovascular mortality.
V. Strelko, Yu. Gorlov
doaj   +1 more source

Peculiarities of Thermodynamic Behaviors of Xenon Adsorption on the Activated Carbon Prepared from Silicon Carbide

open access: yesNanomaterials, 2021
An activated carbon prepared from silicon carbide by thermochemical synthesis and designated as SiC-AC was studied as an adsorbent for xenon. The examination of textural properties of the SiC-AC adsorbent by nitrogen vapor adsorption measurements at 77 K,
Ilya Men’shchikov   +3 more
doaj   +1 more source

Investigation into irreversible sorption of pesticides to soil [PDF]

open access: yes, 2012
The importance of extremely slow retention and release has superseded the notion that sorption of pesticides to soil is an instantaneous and reversible process. A fraction of sorbed pesticide is also often reported to bind irreversibly to the soil matrix.
Suddaby, Laura
core  

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

open access: yesAdvanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian   +7 more
wiley   +1 more source

Preparation and characterization of titanium dioxide modified with carbon with enhanced photocatalytic activity

open access: yesХімія, фізика та технологія поверхні, 2016
The aim of our work was to prepare nanoscale composites based on TiO2 and carbon photocatalytically active under UV and visible irradiation in the destruction of safranin T. The samples were characterized by XRD, BET, SEM, UV-Vis and IR spectroscopy.
M. V. Bondarenko   +3 more
doaj   +1 more source

Adsorption-Based Hydrogen Storage in Activated Carbons and Model Carbon Structures

open access: yesReactions, 2021
The experimental data on hydrogen adsorption on five nanoporous activated carbons (ACs) of various origins measured over the temperature range of 303–363 K and pressures up to 20 MPa were compared with the predictions of hydrogen density in the slit-like
Anatoly Fomkin   +7 more
doaj   +1 more source

Phosphorus sorption, accumulation and leaching [PDF]

open access: yes, 2003
Arable land is a major diffuse source of P loads to surface waters. The main processes for P losses from agricultural fields are erosion, surface runoff and subsurface leaching.
Börling, Katarina
core  

Resolving the Cu(bdc) Conundrum: Identifying Non‐Porous Packing of Prototypical Coordination‐Network Thin Films Combining Advanced Diffraction Techniques and Computational Modelling

open access: yesAdvanced Functional Materials, EarlyView.
Solution‐processed Cu(bdc) forms prototypical MOF thin films for which a multitude of not fully satisfactory structural models have been suggested. Combining rotating grazing‐incidence diffraction and X‐ray reflectivity on two complementary samples with density‐functional theory, we first discard the previously suggested models and then identify a non ...
Narges Taghizade   +7 more
wiley   +1 more source

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