Results 11 to 20 of about 4,607 (246)

Transition from anomalous kinetics toward Fickian diffusion for Si dissolution into amorphous Ge [PDF]

open access: yesApplied Physics Letters, 2008
Over the last years, several experimental and theoretical studies of diffusion kinetics on the nanoscale have shown that the time evolution (x∝tkc) differs from the classical Fickian law (kc=0.5). However, all work was based on crystalline samples or models, so far.
Balogh, Z.   +9 more
openaire   +2 more sources

Fine Detection and Analysis of Hidden Karst in Wellsite with Quasi-Three-Dimensional TDEM Based on Lateral Constraint

open access: yesGeofluids, 2023
Considering that karst caves, underground rivers, and dissolution fractures in shallow carbonate formation in the Sichuan Basin are extremely developed, leakage, failure and plugging difficulties are easy to occur in the drilling process.
Bin Wu   +8 more
doaj   +1 more source

Understanding the enhanced rates of hydrogen evolution on dissolving magnesium

open access: yesElectrochemistry Communications, 2019
Despite the growing interest in Mg and its alloys, their use has been largely limited due to their high reactivity in aqueous environments. Improving the understanding of the basic principles of Mg corrosion represents the first step to explain and ...
J.A. Yuwono   +4 more
doaj   +1 more source

Bioerosion by microbial euendoliths in benthic foraminifera from heavy metal-polluted coastal environments of Portovesme (south-western Sardinia, Italy) [PDF]

open access: yesBiogeosciences, 2012
A monitoring survey of the coastal area facing the industrial area of Portoscuso-Portovesme (south-western Sardinia, Italy) revealed intense bioerosional processes.
A. Cherchi   +3 more
doaj   +1 more source

Anomalous dissolution of microindentation deformed zone of ITO/Si coated system

open access: yesphysica status solidi c, 2009
The joint effect of a film and a substrate on the modification of the mechanical properties of an ITO/Si coated system CS, a promising material for solar cells, and its response to an external load in comparison with the Si substrate were considered.
Grabco, D.Z.   +6 more
openaire   +4 more sources

Preparation and Characterization of Controlled-Release Floating Bilayer Tablets of Esomeprazole and Clarithromycin

open access: yesMolecules, 2022
Controlled-release effervescent floating bilayer tablets reduce dosage frequency and improve patient compliance with enhanced therapeutic outcomes. Generally, two different tablets of clarithromycin and esomeprazole, respectively, are given for the ...
Muhammad Israr   +9 more
doaj   +1 more source

Stripping Voltammetric, Conductance and Anodic Linear Polarization Analysis on Dissolution of Electrodeposited Zinc-Cobalt Alloy

open access: yesInternational Journal of Electrochemical Science, 2007
The electrodeposition of zinc-cobalt alloys from sulfate bath was studied on steel substrate. In order to elucidate the deposition mechanism a complementary approach was used based on the combination of various electrochemical techniques.
M. M. Abou-krisha and A. M. Abushoffa
doaj   +2 more sources

Caracterização hidrogeoquímica de água subterrânea em área de influência de futuras instalações de usinas hidrelétricas: bacia hidrográfica do rio Taquari-Antas/RS, Brasil Hydrochemical characterization of groundwaters in projected hydroelectric power plant areas: Taquari-Antas Basin/RS, Brazil

open access: yesQuímica Nova, 2005
The identification and characterization of the hydrochemistry of the groundwaters has been done for seven wells. The sampling occurred during three bimonthly campaigns.
Rejane Maria Scopel   +2 more
doaj   +1 more source

Response Surface Methodology for Development and Optimization of Theophylline Pulmonary Delivery System

open access: yesIraqi Journal of Pharmaceutical Sciences, 2017
The aim of the present study was to develop theophylline (TP) inhalable sustained delivery system by preparing solid lipid microparticles using glyceryl behenate (GB) and poloxamer 188 (PX) as a lipid carrier and a surfactant respectively.
Ali A. Yas   +2 more
doaj   +3 more sources

Development of enteric coated sustained release minitablets containing mesalamine

open access: yesBrazilian Journal of Pharmaceutical Sciences, 2013
The aim of this study was to develop and evaluate a multiparticulate modified release system, composed of minitablets with a sustained release matrix system coated with a pH-dependent release polymer, using mesalamine as a model drug.
Dayse Fernanda de Souza   +2 more
doaj   +1 more source

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