Results 251 to 260 of about 46,827 (285)

Anomalous Electrochemical Dissolution and Passivation of Iron Growth Catalysts in Carbon Nanotubes

Langmuir, 2007
Catalytically synthesized carbon nanotubes (CNTs) such as those prepared via chemical vapor deposition (CVD) contain metallic impurities including Fe, Ni, Co, and Mo. Transition metal contaminants such as Fe can participate in redox cycling reactions that catalyze the generation of reactive oxygen species and other products.
Jennifer L, Lyon, Keith J, Stevenson
openaire   +2 more sources

Anomalous dissolution behaviour of tablets prepared from sugar glass-based solid dispersions

Journal of Controlled Release, 2004
In this study, anomalous dissolution behaviour of tablets consisting of sugar glass dispersions was investigated. The poorly aqueous soluble diazepam was used as a lipophilic model drug. The release of diazepam and sugar carrier was determined to study the mechanisms governing dissolution behaviour.
Van Drooge, D.J., Hinrichs, W.L.J., Frijlink, H.W.   +2 more
openaire   +2 more sources

Anomalous dissolution behavior of the diazepam ? ?-cyclodextrin complex in polymer solutions

Journal of Inclusion Phenomena, 1984
The dissolution process of the diazepam — γ-cyclodextrin complex in aqueous polymer solutions has been studied. Hydroxypropyl cellulose and polyvinylpyrrolidone stabilize the supersaturated state of the complex, maintaining the higher drug level for a longer period.
Kaneto Uekama, Shinji Narisawa, Tetsumi Irie, Masaki Otagiri   +3 more
openaire   +1 more source

Anomalous surface morphology of iron generated after anodic dissolution under magnetic fields

Corrosion Science, 2010
The effects of applied magnetic fields on the anodic dissolution of iron in a sulfuric acid solution were studied by potentiodynamic polarization measurements and electrode morphology observations. Uneven anodic dissolution occurs in the presence of magnetic field and the extent of the electrode surface inhomogeneity increases with magnetic flux ...
Zhanpeng Lu, Tetsuo Shoji, Wu Yang
openaire   +1 more source

Anomalous dissolution behavior of celecoxib in PVP/Isomalt solid dispersions prepared using spray drier

Materials Science and Engineering: C, 2017
Celecoxib is a COX II inhibitor NSAID which is used for joint pains, rheumatoid arthritis and osteoarthritis, however due to its poor water solubility it shows very low oral bioavailability. Using solid dispersion formulations is one of the most promising strategies to increase solubility of poorly water soluble drugs.
Roya, Ghanavati, Azade, Taheri, Alireza, Homayouni   +2 more
openaire   +2 more sources

On the role of the anions on the anomalous anodic dissolution of aluminium

Journal of Applied Electrochemistry, 1977
The influence of the anions on current efficiency during the anodic dissolution of aluminium, and on the surface state of the electrode, has been studied both from a theoretical and an experimental point of view. The results obtained have some implications both in the field of electropolishing and in the field of electrochemical machining.
Garreau, Michel, Bonora, P.
openaire   +2 more sources

An Experimental and PM3 Semiempirical Quantum-chemical Investigation of Anomalous Aluminium Dissolution in Proton-donor Solvents Containing HCl

Mendeleev Communications, 1995
An anomalous chemical mechanism of aluminium dissolution has been experimentally determined in electrolytes containing HCI based on proton-donor solvents (methanol, ethanol, propanol, water), and this mechanism has been explained by a new theoretical approach based on the comparison of the work function of aluminium with the electron affinity of ...
Naum M. Gontmakher, Olga I. Barteneva, Igor’ V. Dorogan, Ruslan M. Minyaev   +3 more
openaire   +1 more source

On the existence of an anomalously high dissolution rate in films of non-Newtonian liquids with short contact times

Journal of Non-Newtonian Fluid Mechanics, 1981
Abstract It has been shown that the dissolution rate of gypsum in films of dilute sodium carboxymethylcellulose (SCMC) solutions is anomalously high compared with theoretical predictions. Two possible explanations of this phenomenon are discussed: either the coefficient of diffusivity in these solutions is much greater than it is in water, or the ...
G. Peev, A. Nikolova
openaire   +1 more source

The anomalous diffusion processes “dissolution-precipitation” of THE γ′ Phase Ni3Al in AN Fe–Ni–Al alloy during low-temperature deformation

Materials Letters, 2016
Abstract An anomalous deformation-induced dissolution of the intermetallics Ni 3 Al in the matrix of austenitic Fe–Ni–Al alloy has been revealed in experiment at cryogenic temperatures (down to 77 K) under high pressure torsion. The observed phenomenon is explained as the result of deformation-stipulated migration of interstitial atoms from a ...
V.V. Sagaradze, V.A. Shabashov, N.V. Kataeva, K.A. Kozlov, A.R. Kuznetsov, A.V. Litvinov   +5 more
openaire   +1 more source

Complexation approach for fixed dose tablet formulation of lopinavir and ritonavir: an anomalous relationship between stability constant, dissolution rate and saturation solubility

Journal of Inclusion Phenomena and Macrocyclic Chemistry, 2011
In the present investigation, cyclodextrin complexation process was explored for development of tablet formulation of WHO approved fixed dose combination of lopinavir and ritonavir with reduced tablet size, shorter disintegration time and higher bio-availability in comparison to reference product.
Gaurav Goyal, Pradeep R. Vavia
openaire   +1 more source