Buscar
Mostrando ítems 21-30 de 443
Efficiency of ethanol conversion induced by controlled modification of pore structure and acidic properties of alumina catalysts
(Elsevier B.V., 2011-05-15)
Bimodal porous alumina catalysts with both continuous macropores and mesopores were prepared using a dual soft template method. The addition of decahydronaphthalene as emulsifier agent successfully contributed to the ...
Soil porosity characteristics and water movement under zero tillage in silty soils in Argentinian Pampas
(Elsevier, 2006-05)
The objective of this study was to identify pore characteristics (quantity, distribution, stability and orientation of pores) that condition water dynamics under continuous zero tillage (ZT) on silty soils of the Argentinian ...
Un sencillo y barato muestreador in situ para aguas intersticiales de sedimentos de entremareas.A SIMPLE AND INEXPENSIVE in situ PORE WATER SAMPLER FOR INTERTIDAL SEDIMENTS
(Universidad Autónoma de Baja California, 1988)
Un sencillo y barato muestreador in situ para aguas intersticiales de sedimentos de entremareas.A SIMPLE AND INEXPENSIVE in situ PORE WATER SAMPLER FOR INTERTIDAL SEDIMENTS
(Universidad Autónoma de Baja California, 1988)
Saturate water conductivity for the soil structure diagnosticLA CONDUCTIVIDAD HIDRAULICA EN FASE SATURADA COMO HERRAMIENTA PARA EL DIAGNOSTICO DE LA ESTRUCTURA DEL SUELO
(Facultad de Ciencias Agrarias. Universidad Austral de Chile, 1997)
Temporal variation of soil physical quality under conventional and no-till systems
(Sociedade Brasileira de Ciência do Solo, 2018-04)
Determination of soil physical quality (SPQ) is very important because it is related to many important soil processes. However, it is not clear which indicators should be considered in this evaluation, and information about ...
Efficiency of ethanol conversion induced by controlled modification of pore structure and acidic properties of alumina catalysts
(Elsevier Science, 2011-05)
Bimodal porous alumina catalysts with both continuous macropores and mesopores were prepared using a dual soft template method. The addition of decahydronaphthalene as emulsifier agent successfully contributed to the ...
Commensurability effects in magnetic properties of superconducting Nb thin films with periodic submicrometric pores
(Elsevier Science, 2009-12)
Pinning properties in 100 nm thick continuous and porous superconducting Nb films are examined by ac susceptibility and dc magnetization measurements. The Nb film was deposited on a smooth Si substrate, while the porous ...
An empirical formulation to describe the evolution of the high burnup structure
(Elsevier Science, 2014-09)
In the present work the behavior of fuel pellets for LWR power reactors in the high burnup range (average burnup higher than about 45 MWd/kgU) is analyzed. For extended irradiation periods, a considerable Pu concentration ...
Historical use of a Ñadi soil: consequences on the effective capacity to storage water/air and the continuity of the pore systemHistorial de uso de un suelo Ñadi: consecuencias sobre la capacidad efectiva de almacenamiento de agua/aire y la continuidad del medio poroso
(Facultad de Ciencias Agrarias. Universidad Austral de Chile, 2017)