Results 21 to 30 of about 9,422 (227)

Antioxydant and prooxydant effects of arbutin and hydrohinon in experiment in vitro

Бюллетень сибирской медицины, 2011
The object of research is to compare antioxidant and prooxydant activity of arbutin and hydrochinon in vitro. Antioxidant and prooxydant activity of arbutin and hydrochinon is estimed of their ability to suppress/ induct oxydation ТВИН-80.
N. L. Voloboy, Ya. F. Zverev, V. M. Bryukhanov, O. S. Talalayeva, S. V. Zamyatina, O. N. Zyablova, I. V. Smirnov   +6 more
doaj   +1 more source

Penerapan dasar perhitungan kebutuhan katalisator untuk oksidasi sulfida

Majalah Kulit, Karet, dan Plastik, 1994
Sulphides beared in tannery wastewater are harmful pollutant which beturned to disastrous hydrogen sulphide gas under acidic circumtances. The previous study on Sulphides Oxydation System of varied catalist (MnSO4) added has not indicated a satisfactory ...
Puji Ediari Suryaningsih
doaj   +1 more source

A New Class of Nucleosides. Synthesis, Reactivity and Biological Activity of Keto-Hexose Nucleosides

CHIMIA, 1975
Direct oxydation of sterically hindered hexosyl purines led to keto-hexosylpurines, important synthetic intermediates. The first unsaturated keto-nucleosides have also been obtained by acetylation of the corresponding keto-hexosyl purines.
K. Antonakis
doaj   +1 more source

L’EPURATION TERTIAIRE DES EAUX USEES DE L’INDUSTRIE DE LA CELLULOSE [PDF]

Annals: Series on engineering sciences (Academy of Romanian Scientists), 2010
Les processus de fabrication de la cellulose représentent des sources importantes de pollution tant pour les eaux, que pour l’aire et le sol. La pollution de l’eau est du, essentiellement, aux substances organiques dissous, aux substances en suspension ...
Constantin STANCIU
doaj  

Behandlung photographischer Abwässer. Ein Umweltschutzproblem von wirtschaftlicher Bedeutung

CHIMIA, 1980
The chemical treatment of photographic effluents (eg. oxydation, precipitation) increases the production costs of photographic laboratories and should therefore be considered only as the last step of a series of measures to abate pollution.
W. Grossmann
doaj   +1 more source

Effects of repeated exposure to ozonated water on hair fibre structure and integrity: Part I

International Journal of Cosmetic Science, EarlyView.
Repeated exposure to ozonated water caused cumulative oxidative changes in hair, altering structural integrity, thermal behaviour and mechanical properties. The findings reveal a distinct ozone‐induced damage profile that progresses beyond the cuticle, challenging claims of hair‐revitalizing benefits. Abstract Objective Ozone has recently been marketed
Pedro Augusto Laurindo Igreja Marrafa, Shamish Ganpule, Vanessa Castro‐Haly, Adriana Barrinha Fernandes, Ernesta Malinauskyte, Carlos Jose de Lima   +5 more
wiley   +1 more source

Modélisation de la multi-fissuration d’un alliage d’aluminium 7010 traité par oxydation anodique chromique [PDF]

, 2010
L’oxydation anodique chromique (OAC) est un procédé de traitement des alliages d’aluminium pour améliorer leur tenue à la corrosion mais il entraîne une très forte réduction de la durée de vie par rapport à l’état usiné.
Chaussumier, Michel, Rezaï-Aria, Farhad, Chieragatti, Rémy, Mabru, Catherine, Shahzad, Majid   +4 more
core  

High-temperature creep of single-crystal nickel-based superalloy : microstructural changes and effects of thermal cycling [PDF]

, 2011
Creep tests were performed on MC2 single crystal superalloy at 950°C/200 MPa and 1150°C/80 MPa under isothermal and thermal cycling conditions with a tensile axis along the [0 0 1] direction. It was found that the thermal cycles strongly affect the creep
Eric Andrieu, Andrieu, E., Andrieu, Eric, Bernard Viguier, Fabienne Touratier, Viguier, Bernard, Touratier, Fabienne   +6 more
core   +1 more source

Impact of ultraviolet radiation‐induced damage to hair fiber integrity: A multi‐technique physicochemical characterization of surface and cortex properties

International Journal of Cosmetic Science, EarlyView.
UV exposure induces cuticular and cortical damage in natural hair, with oxidative effects and protein degradation comparable to bleaching. However, double bleaching leads to significantly greater structural degradation, emphasizing distinct mechanisms and severity of chemical versus UV‐induced damage. Abstract The combination of chemist techniques is a
Nathana Cindy Barros Silva Ramos, Alzira Xavier Pinto Dini, Viviane Cristina Albarici, Mayara Miranda Ferreira, Caroline Vieira Hercolino, Adriano da Silva Pinheiro, André Rolim Baby, Maria Valéria Robles Velasco   +7 more
wiley   +1 more source

Reaktivität von Koordinationsverbindungen XX : Redoxverhaiten von Oxo-3,5-disulfobrenzcatechinato-vanadium(V)

CHIMIA, 1969
The oxydation of pyrocatechole-3,5-disulfonic acid by vanadium(V) in acidic solution has been studied spectrophotometrically. Analysis of kinetic data suggests two parallel reaction paths: (a) An initially formed intensely coloured VO2+ substrate ...
D. Braun-Steinle, S. Fallab
doaj   +1 more source