Πλοήγηση ανά Θέμα "Engineering, Chemical"
Αποτελέσματα 1-20 από 83
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3D Features in the Calendering of Thermoplastics: A Computational Investigation
(2014)We present results of a fully three-dimensional computational study of the calendering process of thermoplastics using the fluid dynamics software OpenFOAM. Our aim is to elucidate unique 3D features of the process, such ... -
Assessment of vulnerable freshwater ecosystems and various aquatic effluents by means of ecotoxicological assays
(2015)A battery of ecotoxicological assays of different trophic chain levels has been performed for water and sediment samples of two Greek vulnerable freshwater ecosystems (Karla Lake in Thessaly Region and Koronia Lake in ... -
Bubble dynamics during degassing of liquids at microgravity conditions
(2006)This work investigates the growth of bubbles generated in a liquid saturated with dissolved CO(2) when its temperature is rapidly and locally raised above the saturation value, still below the boiling point of the test ... -
Bubbles growing in supersaturated solutions at reduced gravity
(2004)This work investigates bubbles growing in a liquid saturated with a dissolved gas when its temperature is locally raised above its saturation value, yet below boiling. Local supersaturation is realized by giving heat pulses ... -
Carbon-supported PdSn and Pd3Sn2 anodes for glucose electrooxidation in alkaline media
(2014)PdSn (20 wt.%) and Pd3Sn2 (20 wt.%) nanoparticles supported on Vulcan XC-72 carbon powders are prepared by a modified microwave-assisted polyol method and studied for the reaction of glucose electrooxidation in alkaline ... -
A case study of investigating reliability and maintainability in a Greek juice bottling medium size enterprise (MSE)
(2009)The reliability and maintainability analysis of an automated mechanical equipment of juice bottling industry for a period of forty-five months at machine, workstation and entire line level was made. The descriptive statistics ... -
Catalytic and electrocatalytic oxidation of carbon monoxide on a Fe electrode in a solid electrolyte cell
(2003)The catalytic oxidation of carbon monoxide on Fe catalyst was studied at 300-500degreesC and atmospheric total pressure. The reaction was studied under both open- and closed-circuit operation in an yttria-stabilized zirconia ... -
Cellular-automata and individual-based approaches for the modeling of biofilm structures: Pros and cons
(2010)Fresh water shortage is one of the greatest problems of modern society; as a result, water desalination, particularly with membrane processes, is becoming increasingly important, since it makes possible the use of brackish ... -
Ceria promoted Pd/C catalysts for glucose electrooxidation in alkaline media
(2015)Carbon support materials are modified by CeO2 through a microwave decomposition method, and then CeO2-C supported Pd catalysts are synthesized by a pulse microwave assisted polyol method. The content of CeO2 is appropriately ... -
Comparison and assessment of the monitoring data of two REMOS stations in Nestos and Pagoneri for the year 2004. The base for an integrated water management
(2009)The monitoring results of two "REMOS" telemetric stations, in River Nestos, are compared. The first one is situated at the Nestos Delta, near Hrisoupoli (Remote Station - RS "Nestos"), and the second one is situated at the ... -
Computer-aided estimation of acetone, methyl acetate, and chloroform diffusion coefficients in poly(vinyl acetate)
(2003)The diffusion coefficients of acetone, methyl acetate, and chloroform in amorphous poly(vinyl acetate) are estimated using the solvent evaporation method. The evaporation process from polymer solutions, cast in the form ... -
Decolorization and degradation of reactive azo dyes via heterogeneous photocatalytic processes
(2010)Reactive dyes are extensively used in textile industry in the last years due to their superior performance, but they are environmentally hazardous and difficult to treat effectively by classical methods. In the present ... -
Defining the level of the Non-Revenue Water in Kozani, Greece: is it a typical case?
(2015)Water Losses in pipe networks usually represent the biggest "water use" due to the high leakage occurring. Water utilities are forced to apply effective Non-Revenue Water (NRW) reduction strategies, as climate change ... -
Desalination and Water Treatment
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Desalination by mechanical compression of humid air
(1999)A novel desalination concept is described, combining the principles of humidification-dehumidification and mechanical vapor compression. Thermodynamic analysis indicates the effect of operating conditions on water production ... -
Direct ethanol fuel cells: The effect of the cell discharge current on the products distribution
(2010)In the present work the results of the continuous and on-line product analysis during a Direct Ethanol Polymer Electrolyte Membrane Fuel Cell operation (DE-PEMFC) are presented. The effect of both cell discharge current ... -
Domestic water pricing in Greece: a spatial differentiation
(2015)This study investigates the differentiation of the water pricing policies applied by the Greek Municipal Water Utilities (GMWU) in several regions. GMWU are being characterized by individual management framework with a ... -
Ecological footprint as a tool for integrated coastal zone management
(2013)The Ecological Footprint (EF) is a widely accepted tool for translating all human activities so as to assess their environmental impact and has been often used as an indicator for environmental sustainability, over the ...