The Experts below are selected from a list of 9 Experts worldwide ranked by ideXlab platform
M. Asou - One of the best experts on this subject based on the ideXlab platform.
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Erbium : alternative poison? Stabilisation Additive? What future?
Progress in Nuclear Energy, 2001Co-Authors: J. Porta, M. AsouAbstract:Erbium was proposed as alternative poison to gadolinium at a very early stage. The potential interest of this poison compared to gadolinium is that it presents a relatively low ( 167 Er) absorption cross section in the thermal range and a non-negligible resonance integral that leads to a relatively slow consumption kinetic rather adapted to long or even very long cycles. The poisoning mode with this element, when homogeneous in low concentration (< 3 %), does not downgrade the power distribution, on the one hand, as the absorption is low and spatially homogeneous, and the thermal conductivity, on the other hand, as the addition in the fuel oxide is in low quantity. A review of knowledge acquired as regards erbium, from the 1960s to now, is presented.
J. Porta - One of the best experts on this subject based on the ideXlab platform.
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Erbium : alternative poison? Stabilisation Additive? What future?
Progress in Nuclear Energy, 2001Co-Authors: J. Porta, M. AsouAbstract:Erbium was proposed as alternative poison to gadolinium at a very early stage. The potential interest of this poison compared to gadolinium is that it presents a relatively low ( 167 Er) absorption cross section in the thermal range and a non-negligible resonance integral that leads to a relatively slow consumption kinetic rather adapted to long or even very long cycles. The poisoning mode with this element, when homogeneous in low concentration (< 3 %), does not downgrade the power distribution, on the one hand, as the absorption is low and spatially homogeneous, and the thermal conductivity, on the other hand, as the addition in the fuel oxide is in low quantity. A review of knowledge acquired as regards erbium, from the 1960s to now, is presented.
M.f. Máximo - One of the best experts on this subject based on the ideXlab platform.
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Comparison of commercial peroxidases for removing phenol from water solutions.
Chemosphere, 2005Co-Authors: A. Bódalo, José Luis Zamorano Gómez, Elisa Gómez Gómez, J. Bastida, M.f. MáximoAbstract:This paper describes a comparison between horseradish peroxidase (HRP) and soybean peroxidase (SBP), the two most widely used commercial peroxidases for the removal of phenol from wastewater. Both enzymes achieve maximal removal efficiency in a neutral pH medium although they are still quite active in a pH range of between 6.0 and 8.0. The fact that both enzymes show similar phenol elimination levels at any temperature between 25 and 40 °C is also of interest. Studies were carried out in the absence and presence of different concentrations of a Stabilisation Additive, polyethylene glycol (PEG), in an attempt to optimise the phenol elimination procedure. The final choice of peroxidase will depend on the characteristics of the effluent, operational requirements and on economic considerations. Our findings show that HRP acts faster than SBP but is more susceptible to inactivation, although it is better protected by PEG. In consequence HRP will be the most suitable choice but the addition of a sufficient amount of PEG is critical.
Ravindra K Dhir - One of the best experts on this subject based on the ideXlab platform.
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7 – Geotechnical Applications
Sustainable Construction Materials, 2017Co-Authors: Ravindra K DhirAbstract:Synopsis This chapter assesses the performance of sewage sludge ash (SSA) in geotechnical applications, dealing with its use as a Stabilisation Additive for the treatment of soft soils and as a fill material. An initial characterisation of the geotechnical properties of the material is undertaken, followed by an analysis of its use in geotechnics, in unbound form and hydraulically bound, with cement or lime. The aspects of the performance dealt with include pH change, plasticity, compaction properties, unconfined compressive strength, California bearing ratio, shear strength and swelling. The environmental impacts associated with the use of SSA in geotechnical applications are also evaluated, along with the findings emerging from case studies.
A. Bódalo - One of the best experts on this subject based on the ideXlab platform.
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Comparison of commercial peroxidases for removing phenol from water solutions.
Chemosphere, 2005Co-Authors: A. Bódalo, José Luis Zamorano Gómez, Elisa Gómez Gómez, J. Bastida, M.f. MáximoAbstract:This paper describes a comparison between horseradish peroxidase (HRP) and soybean peroxidase (SBP), the two most widely used commercial peroxidases for the removal of phenol from wastewater. Both enzymes achieve maximal removal efficiency in a neutral pH medium although they are still quite active in a pH range of between 6.0 and 8.0. The fact that both enzymes show similar phenol elimination levels at any temperature between 25 and 40 °C is also of interest. Studies were carried out in the absence and presence of different concentrations of a Stabilisation Additive, polyethylene glycol (PEG), in an attempt to optimise the phenol elimination procedure. The final choice of peroxidase will depend on the characteristics of the effluent, operational requirements and on economic considerations. Our findings show that HRP acts faster than SBP but is more susceptible to inactivation, although it is better protected by PEG. In consequence HRP will be the most suitable choice but the addition of a sufficient amount of PEG is critical.