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Now showing items 3521-3530 of 3547
Relationship between fracture resistance and critical temperature difference in ceramic materials
(Plenum Publ Corp, New York, 1997)
The resistance of ceramics to thermal shock can be characterized using either a parameter of their resistance to fracture R or the critical temperature difference Delta T-c = Delta T-c (Bi). It is demonstrated that a ...
Regulation of the crystallization in a crucible furnace
(Elsevier, Amsterdam, 1999)
A model of an air cooler ("cold finger") in a laboratory crucible furnace, for simultaneous regulation of scaling intervals of the crystallization rate in a series of Tamman test tubes with the purpose of obtaining crystals, ...
The potential of the piezoelectric sensor for the characterization of activated carbon cloth applied in the adsorption of phenol from air
(Amer Chemical Soc, Washington, 1996)
Facile fabrication of hybrid titanium(IV) isopropoxide/pozzolan nanosheets (TnS-Pz) of high photocatalytic activity: characterization and application for Cr(VI) reduction in an aqueous solution
(Springer Heidelberg, Heidelberg, 2021)
This paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and its application in the photocatalytic hexavalent chromium reduction. The ...
O2 reduction on on ink-type rotating disk electrode using Pt supported on high-area carbons
(Electrochemical Soc Inc, Pennington, 1998)
The kinetics of O2 reduction has been examined on an ink-type electrode made with Pt supported on high-area carbon. Electrocatalysls with 5-40 mass % of Pt on Black Pearls, Vulcan XC-72, and Shawinigan acetylene black ...
Hydrodynamics and Mass Transfer in a Four‐Phase External Loop Air Lift Bioreactor
(Wiley, Hoboken, 1995)
An external loop air lift reactor (ELALR) was developed and designed for continuous production and extraction of extracellular secondary metabolites by immobilized Frangula alnus Mill. plant cells. This system was considered ...
Electrolyte penetration through epoxy coatings electrodeposited on steel
(Pergamon-Elsevier Science Ltd, Oxford, 1995)
A.C. impedance measurements carried out on epoxy-resin elcctrocoated steels were used to determine the pore resistance of the organic film as a function of time of exposure to 3% sodium chloride solution. The thermogravimctric ...
Influence of substrate on the formation and growth kinetics of cathodic electrocoat paint
(Elsevier Science Sa, Lausanne, 1995)
Cataphoretic deposition of an epoxy primer was carried out on four different substrates: bare steel; phosphated steel; bare zinc-plated steel; and phosphated zinc-plated steel. Film growth was followed by observing the ...
Microscopic modelling of electrothermal desorption
(The Chemical Engineering Journal and The Biochemical Engineering Journal, 1994)
A mathematical model of thermal desorption with internal electroresistive heating of the adsorbent is postulated for a single particle. Three parallel mechanisms are considered: surface diffusion, pore diffusion and thermal ...
Electron‐impact induced decomposition of some 3‐alkyl‐5‐substituted‐6‐methyl uracils
(Wiley, Hoboken, 1995)
Mass spectrometry was used to study the main fragmentation routes of some 3‐alkyl‐5‐substituted‐6‐methyl uracils. Differences in fragmentation were caused by changes in the structure of the alkyl group in position 3 of the ...