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Artículo
Efecto de la zona de contacto entre fibra y matriz en las propiedades de fractura de materiales compuestos sometidos a carga transversal
(Grupo Español de Fractura, 1997)
El presente trabajo trata de dilucidar si en presencia de despegues entre fibra y matriz, se produce contacto circunferencial entre ambas fases cuando el conjunto está sometido a carga transversal a la fibra. Se utiliza ...
Ponencia
Artículo
Radioactive impact of phosphate ore processing in a wet marshland in southwestern Spain
(Elsevier, 1997)
In this paper an extensive study of the presence of natural radionuclides in a marshland area located in the vicinity of a phosphoric acid production complex in southwestern Spain is presented. This marsh is a natural ...
Artículo
The limit relations between generalized orthogonal polynomials
(Elsevier, 1997-09)
We consider the different limit transitions for modifications of the classical polynomials obtained by the addition of one or two point masses at the ends of the interval of orthogonality. The connections between Jacobi, ...
Ponencia
Using CAD Tools for the Automatic Design of Low-Power ΣΔ Modulators
(1997)
This paper illustrates the use of a CAD methodology to design a high-resolution 2nd-order ZA modulator with optimized power con- sumption.The fabricated prototype in 0.7um CMOS technology features 16.4-bit resolution at ...
Artículo
210Pb enhancement in rivers affected by the phosphate rock processing in southwestern Spain
(Elsevier, 1997)
The activity levels of 210Pb in solution and bottom sediments were measured in the estuary formed by the Odiel and Tinto rivers in southwest Spain. The levels in both water and sediment samples indicate that the discharges ...
Artículo
Transfer of natural radionuclides from soils to plants in a marsh enhanced by the operation of non-nuclear industries
(Elsevier, 1997)
Two sampling campaigns were performed in 1993 at the marsh area (Odiel marsh) located in southwestern Spain, in the city of Huelva. Spartina densiflora and substrate soil (5 cm deep) samples were collected in several ...
Artículo
A six-phase model to simulate the contamination by non-conservative radionuclides of sediments, soils and plants in a marsh area. Application to the Odiel marsh in southwest Spain
(Elsevier, 1997)
A numerical model to simulate the dispersion of non-conservative radionuclides in an estuarine system that surrounds a marsh area has been developed. The model includes six phases: water, two types of suspended particles ...