A. Ortega

Publication List Details

Period

1983 - 2009

Number

56

Co-Authors

Biocalcarenites as construction materials in Santa Marina de Aguas Santas Church at Cordoba, Spain (2009)

Barrios Neira, J., Montealegre, L., Ortega, A., Meroño, J. E., Aguilera, M. J.

This study consisted in characterizing the materials used to build Santa Marina de Aguas Santas Church at Cordoba and locating the original quarries. The techniques used in the lithological and...

Prym varieties of cyclic coverings (2008)

Lange, H., Ortega, A.

The Prym map of type (g,n,r) associates to every cyclic covering of degree n of a curve of genus g, ramified at a reduced divisor of degree r, the corresponding Prym variety. We show that the...

Curva de resistividad aparente en una región del volcán Galeras (2006)

Greinwald, A., Rugeles, A., Herrera, A., Ortega, A., Ortiz, L.

Utilizando registros de la estación electromagnética Cráter perteneciente a la red de monitoreo del volcán Galeras (INGEOMINAS), se ha implementado el método magnetotelúrico. Se presenta la...

Valor predictivo de la clasificación de Knosp en el grado de resección quirúrgica de los macroadenomas invasivos: esstudio prospectivo de una serie de 23 casos (2006)

Enseñat, J., Ortega, A., Topcewski, T., Vilalta, J., Obiols, Gabriel, Mesa, J., ...

Objetivos. Analizar y valorar el grado de resección y las complicaciones de la cirugía transesfenoidal en una serie de 23 casos de macroadenomas con invasión del seno cavernoso evaluados mediante...

Acquisition and monitoring system of the electrical signals generated in cerebral activity (2006)

Dorado, L., Ortega, A., Bolaños, G., Casas, J.

Hemos diseñado un Sistema de Adquisición y Monitoreo para adquirir y visualizar las señales eléctricas generadas en la corteza cerebral con el fin de utilizarlas en diagnóstico médico y/o en...

Ciclo energético integral del sector oleícola en la provincia de Jaén (España) (2006)

Cruz-Peragón, F., Palomar, J. M., Ortega, A.

Olive oil solid residue, “orujo”, results from the extraction of olive oil through physical processes. With a variable composition, it is mainly used as a raw material to extract the...

Contents (2006)

Contact Brock, A. Ortega, Southern California Edison, Contact Maija, E. Benjamins

Introduction........................................................................................................................... D-1 Regulatory...

Identification of a calcium-dependent matrix metalloproteinase complex in rat chorioallantoid membranes during labour (2006)

Meraz-Cruz, N., Ortega, A., Estrada-Gutierrez, G., Flores, A., Espejel, A., Hernandez-Guerrero, C., ...

The induction of the expression of matrix metalloproteinases (MMPs) and their extracellular activation are key processes in connective tissue degradation in the chorioallantoid membrane during rat...

Identification of a calcium-dependent matrix metalloproteinase complex in rat chorioallantoid membranes during labour (2006)

Meraz-Cruz, N., Ortega, A., Estrada-Gutierrez, G., Flores, A., Espejel, A., Hernandez-Guerrero, C., ...

The induction of the expression of matrix metalloproteinases (MMPs) and their extracellular activation are key processes in connective tissue degradation in the chorioallantoid membrane during rat...

Hiponatremia: Fisiopatología, diagnóstico y tratamiento (2005)

Pérez, J., Pérez, F. C., Alvarruiz, J., Losa, A., Pérez, R. E., Ortega, A., ...

La hiponatremia constituye una entidad frecuente tanto en pacientes hospitalizados como en las consultas extrahospitalarias. Determinadas enfermedades se pueden presentar con hiponatremia, por lo que...

Hiponatremia: Fisiopatología, diagnóstico y tratamiento (2005)

Pérez, J., Pérez, F. C., Losa Palacios, A. J., Pérez, R. E., Ortega, A., Llamas, F., ...

La hiponatremia constituye una entidad frecuente tanto en pacientes hospitalizados como en las consultas extrahospitalarias. Determinadas enfermedades se pueden presentar con hiponatremia, por lo que...

Fiabilidad de los sistemas de Venturi en la oxigenoterapia (2003)

Gómez Seco, Julio, Rodríguez Nieto, María Jesús, Heili Frades, S. B., Sabillón, O., Fernández, I., Ortega, A., ...

Los sistemas de Venturi son unos de los productos más utilizados para la administración de la oxigenoterapia. A pesar de su extendido empleo en la práctica clínica habitual, se carece de...

Calculation of hydrodynamic properties of small nucleic acids from their atomic structure (2002)

Fernandes, M. X., Ortega, A., López Martínez, M. C.

Hydrodynamic properties (translational diffusion, sedimentation coefficients and correlation times) of short B-DNA oligonucleotides are calculated from the atomic-level structure using a bead...

Towards Efficient and Scalable Speech Compression Schemes for Robust Speech Recognition Applications (2000)

N. Srinivasamurthy, A. Ortega, Q. Zhu, A. Alwan

This paper presents a scheme for distributed automatic speech recognition. A Hidden Markov Model (HMM)-based speech recognition system with a Mel Frequency Cepstral Coefficients (MFCC) front end was...

Estudio MACARENA. Disminución de la absorción de nicotina por el uso del filtro antinicotínico en los alumnos fumadores de enfermería en la Escuela Universitaria de Ciencias de la Salud de la Universidad de Sevilla (1999)

Santos, S., Vázquez, S., Valderrama Franco, Esperanza, Aragón, J., Ortega, A., Perpiñá, I., ...

En los paises desarrollados, las enfermedades cardiovasculares (ECV) siguen siendo las que presentan un mayor índice de morbi-mortalidad, hasta el punto que la prevención de las mismas ha pasado a...

Implementation of Optimized Cache Replenishment Algorithms in a Soft Caching System (1998)

J. Kangasharju, Y. Kwon, A. Ortega, X. Yang, K. Ramchandran

Abstract- In this paper we address practical issues which arise in the implementation of optimized cache replenishment algorithms within a "soft " caching framework. We study the...

Implementation Of Optimized Cache Replenishment Algorithms In A Soft Caching System (1998)

J. Kangasharju, Y. Kwon, A. Ortega, X. Yang, K. Ramchandran

In this paper we address practical issues which arise in the implementation of optimized cache replenishment algorithms within a "soft" caching framework. We study the algorithms that have...

Soft caching: Web cache management techniques for images (1997)

A. Ortega, F. Carignano, S. Ayer, M. Vetterli

Abstract- The vast majority of current Internet traffic is generated by web browsing applications. Proxy caching, which allows some of the most popular web objects to be cached at intermediate nodes...

A framework for optimization of a multiresolution remote image retrieval system (1994)

A. Ortega, Z. Zhang, M. Vetterli

In this paper, we study the tradeoffs involved in choosing the bit allocation in a multiresolution remote image retrieval system. Such a system uses a multiresolution image coding scheme so that a...

Toward Joint Optimization Of Vbr Video Coding And Packet Network Traffic Control (1993)

Ortega Garrett, A. Ortega, M. W. Garrett, M. Vetterli

this paper we identify the advantages of VBR video coding, show how the codec design problem changes under the new constraints of variable rate transmission, and propose that to realize the...

Effectiveness of Chelation Therapy with Time after Acute Uranium Intoxication (1990)

DOMINGO, J. L., ORTEGA, A., LLOBET, J. M., CORBELLA, J.

Effectiveness of Chelation Therapy with Time after Acute Uranium Intoxication. DOMINGO, J. L, ORTEGA, A., LLOBET, J. M., AND CORBELLA, J. (1990). Fundam. Appl. Toxicol 14, 88–95. The effect of...

Contribución al estudio de los Heloticles en la Península Ibérica (I) (1983)

Galán, R., Ortega, A.

Se estudian diecisiete especies pertenecientes al Orden Helotiales (Discomicetes Inoperculados) recolectadas durante el período 1978-1980 en la provincia de Granada, que se encuadran en las...

Membrane healing and restoration of contractility after mechanical injury in isolated skeletal muscle fibers of the frog.

Gonzalez-Serratos, H, Rozycka, M, Cordoba-Rodriguez, R, Ortega, A

In single isolated skeletal muscle fibers of the frog, we studied (i) the recovery from large sarcolemmal mechanical injuries of the response to electric stimulation and (ii) the integrity of the...

Calculation of hydrodynamic properties of small nucleic acids from their atomic structure

Fernandes, M. X., Ortega, A., López Martínez, M. C.

Hydrodynamic properties (translational diffusion, sedimentation coefficients and correlation times) of short B-DNA oligonucleotides are calculated from the atomic-level structure using a bead...

Tropism of human adenovirus type 5-based vectors in swine and their ability to protect against transmissible gastroenteritis coronavirus.

Torres, J M, Alonso, C, Ortega, A, Mittal, S, Graham, F, Enjuanes, L

The infection of epithelia] swine testicle and intestinal porcine epithelial (IPEC-1) cell lines by adenovirus type 5 (Ad5) has been studied in vitro by using an Ad5-luciferase recombinant containing...

Genotypic assessment of isoniazid and rifampin resistance in Mycobacterium tuberculosis: a blind study at reference laboratory level.

Telenti, A, Honoré, N, Bernasconi, C, March, J, Ortega, A, Heym, B, ...

Progress in understanding the basis of resistance to isoniazid (INH) and rifampin (RMP) has allowed molecular tests for the detection of drug-resistant tuberculosis to be developed. Consecutive...

Impact of the human immunodeficiency virus epidemic on detection of Mycobacterium isolates in a general hospital.

Bouza, E, Albadalejo, J, Cercenado, E, Ruiz Serrano, M J, Vicente, T, Ortega, A

The number of human samples processed in our mycobacteriology laboratory ranged from 148 per 1,000 admissions in 1988 to 263 per 1,000 admissions in 1995 (5.2% were positive). The human...

Isolation, immunochemical characterization and localization of the kainate sub-class of glutamate receptor from chick cerebellum.

Gregor, P, Eshhar, N, Ortega, A, Teichberg, V I

The low-affinity kainate binding sites, present at high density in chick cerebellar membranes, were solubilized with Triton X-100 and purified 41-fold. The purified kainate binding sites, therein...

Systematic Molecular Characterization of Multidrug-Resistant Mycobacterium tuberculosis Complex Isolates from Spain

Samper, S., Iglesias, M. J., Rabanaque, M. J., Gómez, L. I., Lafoz, M. C., Jiménez, M. S., ...

We used spoligotyping and restriction fragment length polymorphism (RFLP) of the IS6110-insertion sequence to study the molecular epidemiology of multidrug-resistant (MDR) tuberculosis in Spain. We...

The Drosophila fl(2)d gene, required for female-specific splicing of Sxl and tra pre-mRNAs, encodes a novel nuclear protein with a HQ-rich domain.

Penalva, L O, Ruiz, M F, Ortega, A, Granadino, B, Vicente, L, Segarra, C, ...

The Drosophila gene female-lethal(2)d [fl(2)d] interacts genetically with the master regulatory gene for sex determination, Sex-lethal. Both genes are required for the activation of female-specific...

Membrane healing and restoration of contractility after mechanical injury in isolated skeletal muscle fibers of the frog.

Gonzalez-Serratos, H, Rozycka, M, Cordoba-Rodriguez, R, Ortega, A

In single isolated skeletal muscle fibers of the frog, we studied (i) the recovery from large sarcolemmal mechanical injuries of the response to electric stimulation and (ii) the integrity of the...

Calculation of hydrodynamic properties of small nucleic acids from their atomic structure

Fernandes, M. X., Ortega, A., López Martínez, M. C.

Hydrodynamic properties (translational diffusion, sedimentation coefficients and correlation times) of short B-DNA oligonucleotides are calculated from the atomic-level structure using a bead...

Tropism of human adenovirus type 5-based vectors in swine and their ability to protect against transmissible gastroenteritis coronavirus.

Torres, J M, Alonso, C, Ortega, A, Mittal, S, Graham, F, Enjuanes, L

The infection of epithelia] swine testicle and intestinal porcine epithelial (IPEC-1) cell lines by adenovirus type 5 (Ad5) has been studied in vitro by using an Ad5-luciferase recombinant containing...

Genotypic assessment of isoniazid and rifampin resistance in Mycobacterium tuberculosis: a blind study at reference laboratory level.

Telenti, A, Honoré, N, Bernasconi, C, March, J, Ortega, A, Heym, B, ...

Progress in understanding the basis of resistance to isoniazid (INH) and rifampin (RMP) has allowed molecular tests for the detection of drug-resistant tuberculosis to be developed. Consecutive...

Impact of the human immunodeficiency virus epidemic on detection of Mycobacterium isolates in a general hospital.

Bouza, E, Albadalejo, J, Cercenado, E, Ruiz Serrano, M J, Vicente, T, Ortega, A

The number of human samples processed in our mycobacteriology laboratory ranged from 148 per 1,000 admissions in 1988 to 263 per 1,000 admissions in 1995 (5.2% were positive). The human...

Isolation, immunochemical characterization and localization of the kainate sub-class of glutamate receptor from chick cerebellum.

Gregor, P, Eshhar, N, Ortega, A, Teichberg, V I

The low-affinity kainate binding sites, present at high density in chick cerebellar membranes, were solubilized with Triton X-100 and purified 41-fold. The purified kainate binding sites, therein...

Systematic Molecular Characterization of Multidrug-Resistant Mycobacterium tuberculosis Complex Isolates from Spain

Samper, S., Iglesias, M. J., Rabanaque, M. J., Gómez, L. I., Lafoz, M. C., Jiménez, M. S., ...

We used spoligotyping and restriction fragment length polymorphism (RFLP) of the IS6110-insertion sequence to study the molecular epidemiology of multidrug-resistant (MDR) tuberculosis in Spain. We...

The Drosophila fl(2)d gene, required for female-specific splicing of Sxl and tra pre-mRNAs, encodes a novel nuclear protein with a HQ-rich domain.

Penalva, L O, Ruiz, M F, Ortega, A, Granadino, B, Vicente, L, Segarra, C, ...

The Drosophila gene female-lethal(2)d [fl(2)d] interacts genetically with the master regulatory gene for sex determination, Sex-lethal. Both genes are required for the activation of female-specific...

Clinical usefulness of temporal artery biopsy.

Vilaseca, J, González, A, Cid, M C, Lopez-Vivancos, J, Ortega, A

To assess the diagnostic usefulness of temporal artery biopsy in temporal arteritis (TA) and establish clinical features capable of predicting its positivity we have retrospectively studied the...

Congenital spinal cord haemangioblastoma: another cause of spinal cord section syndrome in the newborn.

Roig, M, Ballesca, M, Navarro, C, Ortega, A, Martorell, R, Fina, A

A newborn infant with negative perinatal history and characteristic clinical findings of upper cervical spinal cord section is described. Metrizamide myelography performed on the 7th and 22nd days of...