Results 21 to 30 of about 33,936 (306)

Redução e substituição do ácido crômico na etapa de condicionamento de ABS para metalização Reduction and replacement of chromic acid in step-conditioning of ABS for metallization

open access: yesPolímeros, 2009
Na etapa de condicionamento de peças em acrilonitrila-butadieno-estireno (ABS), geralmente, são empregadas soluções sulfocrômicas, resultando na geração de efluentes altamente tóxicos e ambientalmente poluentes.
Ana Paula Kurek   +2 more
doaj   +1 more source

Chromic Acid Oxidation of Tazettine.

open access: yesChemical and Pharmaceutical Bulletin, 1963
Tazettine was oxidized with chromic acid under the controlled conditions to give a neutral compound, oxotazettine, C18H19O6N·1/2H2O, which was shown to be represented by the formula (II).
S, Ueo, T, Hayazaki, H, Yajima
openaire   +3 more sources

Effect of Swelling of Chemical Reagents and the Sulfuric-Chromic Acid Bath on Surface Texturizing of Poly(Acrylonitrile-Butadiene-Styrene)

open access: yesActa Chimica Slovenica, 2019
The surface modification of copolymer substrates of Acrylonitrile-Butadiene-Styrene (ABS) is significant for the electroplating industry. The sulfuric-chromic acid bath, used in the Electroless process, conditioning the ABS surface by selective oxidation
Lorena Magallón Cacho   +3 more
doaj   +1 more source

Structure Modification of Polyester 3-Deminsional Fabrics with β-Cyclodextrin and Citric Acid [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2008
Modifying polyester spacer fabric by β-cyclodextrin produces a new product with outstanding characteristics. Citric acid is used as a crosslinking agent for improvement of durability of this material in textile fabrics.
M. Montazar, M. Jolaei
doaj   +1 more source

Chromic acid dealumination of zeolites [PDF]

open access: yesMicroporous and Mesoporous Materials, 2022
Commercial zeolites with CHA, MFI, and LTL framework topology are subjected to acid treatment with chromic acid (H2CrO4) solutions with concentrations ranging between 0.1 and 10 w/%. As chromic acid forms polymeric species as a function of concentration, specific effects were obtained with these three zeolites, differing by their framework topology ...
Babić, Viktoria   +5 more
openaire   +2 more sources

Influence of methionine supplementation of growing diets enriched with lysine on feedlot performance and characteristics of digestion in Holstein steer calves. [PDF]

open access: yes, 2016
ObjectiveTwo trials were conducted in order to examine the effects of level of supplemental methionine on productive performance, dietary energetic, plasma amino acid concentration, and digestive function.MethodsDietary treatments consisted of a steam ...
Carrasco, Ramsés   +4 more
core   +3 more sources

Effect of cerium (IV) on thin sulfuric acid anodizing of 2024-T3 alloy

open access: yesJournal of Materials Research and Technology, 2021
Chromic acid anodizing (CAA) is still being used today for corrosion protection of fatigue-critical components in the aeronautic industry due to the lack of feasible alternatives.
R. del Olmo   +5 more
doaj   +1 more source

Effect of Surface Preparation Methods on Mechanical Properties of 3D Structures Fabricated by Stereolithography and 3D Printing for Electroless Ni Plating [PDF]

open access: yes, 2007
Stereolithography (SL) and 3D Printing (3DP) are useful technologies for three-dimensional prototyping applications, providing highly accurate and detailed part geometries with high quality surface finishes.
Joseph, Shine   +3 more
core   +1 more source

Stereospecific and Unspecific Pathways for Aromatization of 1,4-Cyclohexadienes

open access: yesCHIMIA, 1988
The aromatization of trans-3,6-dideuterio-1,4-cyclohexadiene (1-d2) to benzene (2) with chromic acid is slightly stereospecific with a diastereomeric excess of 25%.
Paul Müller   +2 more
doaj   +1 more source

Effects of anion incorporation on the local structure of porous-type amorphous alumina prepared by anodization: NMR study of Al coordination numbers

open access: yesResults in Physics, 2023
Although anodization is an essential technology that has supported the aluminum industry for nearly a century, the atomistic structure of the formed alumina films has not completely understood.
Hideki Hashimoto   +3 more
doaj   +1 more source

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