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The performance of aerobic submerged packed bed reactors was studied for the treatment of domestic wastewater using different kinds of packing materials with high specific areas (760-1,200 m(2)/m(3)). The tested materials were ceramic spheres, crushed tezontle, grains of high density polyethylene (HDPE), of low density polyethylene (LDPE) and of(More)
Schwannomas may develop sporadically or in association with NF2 and schwannomatosis. The fundamental aberration in schwannomas is the bi-allelic inactivation of the NF2 gene. However, clinical and molecular data suggest that these tumors share a common pathogenetic mechanism related to as yet undefined 22q-loci. Linkage studies in schwannomatosis, a(More)
1 Associate Professor, Departamento de Ingeniería en Maderas, Universidad del Bío-Bío, Concepción, Chile, 4081112 2 Professor and Dean respectively of the Dept. of Wood and Forest Sciences, Laval University, Quebec, QC, Canada, G1V 0A6. 3 Group Leader and Research Scientist, FPInnovations-Wood Products Division, Otawa, ON, Canada K1S 5R1. Corresponding(More)
The objective of this study is to evaluate the treatment of high-strength acid mine drainage (AMD) from copper mining by nanofiltration (NF) and reverse osmosis (RO) at pilot scale. The performances of two commercial spiral-wound membranes - NF99 and RO98pHt, both from Alfa Laval - were compared. The effects of pressure and feed flow on ion rejection and(More)
The authors acknowledge the immense contribution of the speakers of the Regional Consultation on Prevention and Treatment of Severe Acute Malnutrition in Asia and the Pacific, who provided the information that is the basis for this article (by alphabetical order): Hedwig Deconinck (Public Health Researcher, University of Louvain), Katrin Engelhardt(More)
Background: Platelet derived growth factor receptor a (PDGFRa) expression is typical for a variety of brain tumours, while in normal adult brain PDGFRa expression is limited to a small number of neural progenitor cells. The molecular mechanisms responsible for the PDGFRa expression in tumours are not known, but in the absence of amplification, changes in(More)
Nanoindentation is a powerful tool for hardness testing on a very small scale. Since the technique was first introduced for studying wood cell wall mechanics, it has been integrated as an important tool for measuring the modulus of elasticity and hardness of wood cell walls. In this study, hardness measured with nanoindentation (nanohardness) was compared(More)
The entrapment method was used to prepare electrochemical biosensors. Using controlled potential method, copolymers were synthesized between aniline y sulfonated-anilines in aqueous media at pH 4.9 on Platinum disc. The copolymers were characterized by elemental analysis and spectroscopy. Glucose-oxidase was entrapped in the electropolymerization process,(More)
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