"Tomo 1." No more published? Includes bibliographical references. Book.
0000 - Gale Group | Sabin
Félix Pérez-Jiménez, Gonzalo Valdés, Ramón Botella Nieto, José Rodrigo Miró Recasens, Adriana H. Martínez,
Tópico(s): Concrete Properties and Behavior
2011 - Elsevier BV | Construction and Building Materials
JOSE M. DE TORRIJOS. IGNACIO LOPEZ PINTO. JUAN LASANA. BENITO LOSADA. PEDRO CASASOLA. FRAN. VALDEZ. ANTONIO RUBIO. RAMON BARRERA., JOSE M. DE TORRIJOS. PEDRO CASASOLA. IGNACIO LOPEZ PINTO. FRAN. VALDES. JUAN LASANA. ANTONIO RUBIO. BENITO LOSADA. RAMON BARRERA. London, March 6. 1830., A SPECIAL JURYMAN., THE EDITOR OF THE COURT JOURNAL., AN AGED CURATE., W. C. B., AN OBSERVER, T. WHITMORE. Sec, A JOURNEYMAN TAILOR., A. J. L.,
Classified Advertising: THE LADY MACNAGHTEN, 600 tons, W. L. POPE, Commander, will sail from Portsmouth, on the 10th, THIS EVENING will be performed Rossini' ...
1830 - Gale Group | TDA
Alba Cortés Alfaro, Juan Aguilar Valdés, Ramón Suárez Medina, Elayne Rodríguez Dávila, Jesús Salvador Durán Rivero,
Tópico(s): Attention Deficit Hyperactivity Disorder
2011 - Editorial Ciencias Médicas | Revista cubana de medicina general integral
JOSE MARIA TORRIJOS., JUAN LASANA., FRANCISCO VALDES., PEDRO CASASOLA., YGNACIO LOPEZ PINTO., BENITO LOSADA., RAMON BARRERA., ANTONIO RUBIO., WM. HAYLETT., A COLOMBIAN., FREDERICK BRAITHWAITE.,
Classified Advertising: CORN-EXCHANGE, FRIDAY, OCT. 23. Our market continues in a stagnant state, Not the slightest, FOR MADRAS and CALCUTTA, the CAESAR, ...
1829 - Gale Group | TDA
Eva Vallada, José-Manuel Belenguer, Fulgencia Villa, Ramón Álvarez-Valdés,
This paper addresses the scheduling of a yard crane in an automated container block, considering its relationships with the other terminal subsystems. Containers coming into the block to be stored have release times, indicating the moment at which they arrive from ships or trucks. Containers being retrieved have due times, indicating when they will be required by other subsystems. The problem can be seen as a pickup routing problem and also as a one-machine scheduling problem. As a starting point, ...
Tópico(s): Maritime Transport Emissions and Efficiency
2023 - Elsevier BV | European Journal of Operational Research
Josep M. Campistol, Manuel Arias, Gema Ariceta, Miguel Blasco, Laura Espinosa, Mario Espinosa, Josep M. Grinyó, Manuel Macía, Santiago Mendizábal, Manuel Praga, Elena Román, Roser Torrá, Francisco Valdés, Ramón Vilalta, Santiago Rodrı́guez de Córdoba,
Haemolytic uraemic syndrome (HUS) is a clinical entity defined as the triad of nonimmune haemolytic anaemia, thrombocytopenia, and acute renal failure, in which the underlying lesions are mediated by systemic thrombotic microangiopathy (TMA). Different causes can induce the TMA process that characterises HUS. In this document we consider atypical HUS (aHUS) a sub-type of HUS in which the TMA phenomena are the consequence of the endotelial damage in the microvasculature of the kidneys and other organs ...
Tópico(s): Renal Diseases and Glomerulopathies
2015 - Elsevier BV | Nefrología (English Edition)
Josep M. Campistol, Manuel Arias, Gema Ariceta, Miguel Blasco, Laura Espinosa, Mario Espinosa, Josep M. Grinyó, Manuel Macía, Santiago Mendizábal, Manuel Praga, Elena Román, Roser Torrá, Francisco Valdés, Ramón Vilalta, Santiago Rodrı́guez de Córdoba,
El síndrome hemolítico urémico (SHU) es una entidad clínica definida por la tríada anemia hemolítica no inmune, trombocitopenia e insuficiencia renal aguda, en la que las lesiones subyacentes están mediadas por un proceso de microangiopatía trombótica (MAT) sistémico. Distintas causas pueden desencadenar el proceso de MAT que caracteriza el SHU. En este documento consideramos SHU atípico (SHUa) como el subtipo de SHU en el que los fenómenos de MAT son fundamentalmente consecuencia del daño producido ...
Tópico(s): Dialysis and Renal Disease Management
2015 - Elsevier BV | Nefrología
Antonio J. Amor, L. Masana, Federico Soriguer, Albert Goday, Alfonso L. Calle‐Pascual, Sonia Gaztambide, Gemma Rojo‐Martínez, Sergio Valdés, Ramón Gomis, Emilio Ortega,
En España no se dispone de estudios poblacionales de ámbito nacional en los que se haya evaluado el riesgo cardiovascular total. El objetivo del estudio es describir el riesgo cardiovascular y la consecución de los objetivos terapéuticos según lo establecido en la guía europea de 2012 para la estrategia de prevención de la enfermedad cardiovascular. Se investigaron también las características clínicas (factores de riesgo no clásicos) asociadas a un riesgo moderado. Se seleccionó a los participantes ( ...
Tópico(s): Health Systems, Economic Evaluations, Quality of Life
2014 - Elsevier BV | Revista Española de Cardiología
Marcela A. Ferrero, Enrique Llobet-Brossa, Jorge Lalucat, Elena García‐Valdés, Ramon Rosselló‐Mora, Rafael Bosch,
ABSTRACT We analyzed the occurrence of the naphthalene degradation upper-pathway ( nah ) genes in the western Mediterranean region. The amplification, restriction, and sequence analysis of internal fragments for several nah genes ( nahAc , nahB , nahC , and nahE ) from naphthalene-degrading strains isolated from this geographical area proved the coexistence of two distinct sets of nah genes.
Tópico(s): Pharmaceutical and Antibiotic Environmental Impacts
2002 - American Society for Microbiology | Applied and Environmental Microbiology
Salvador Herrera-Velarde, Edith C. Euán-Díaz, Fidel Córdoba-Valdés, Ramón Castañeda-Priego,
We report on the hydrodynamic correlations between colloids immersed in a low Reynolds number fluid. We consider colloidal arrays composed of three particles; each colloid is trapped in a single harmonic potential and interacts with the other colloids only via hydrodynamic forces. We focus on the role of a third body in the two-body correlation functions. We give special attention to a collinear configuration of particles, although the salient features of an equilateral triangle configuration are ...
Tópico(s): Electrostatics and Colloid Interactions
2013 - IOP Publishing | Journal of Physics Condensed Matter
Antonio J. Amor, L. Masana, Federico Soriguer, Albert Goday, Alfonso L. Calle‐Pascual, Sonia Gaztambide, Gemma Rojo‐Martínez, Sergio Valdés, Ramón Gomis, Emilio Ortega,
There are no nationwide, population-based studies in Spain assessing overall cardiovascular risk. We aimed to describe cardiovascular risk and achievement of treatment goals following the 2012 European Guidelines on cardiovascular disease prevention strategy. We also investigated clinical characteristics (non-classical risk factors) associated with moderate risk. Participants (n = 2310, 58% women) aged 40 to 65 years from a national population-based study ([email protected] Study) were identified. First, ...
Tópico(s): Blood Pressure and Hypertension Studies
2014 - Elsevier BV | Revista Española de Cardiología (English Edition)
Juan Vela-Valdés, Ramón Syr Salas-Perea, María Luisa Quintana-Galende, Nayra Pujals-Victoria, Jorge L. González‐Pérez, Lázaro Díaz-Hernández, Lizette Pérez-Perea, María J Vidal-Ledo,
a una organización o un producto específico.
Tópico(s): Health and Medical Education
2018 - Pan American Health Organization | Revista Panamericana de Salud Pública
Mónica Castillo-Castillo, Laura Alicia Ibáñez-Castillo, Juan B. Valdés, Ramón Arteaga-Ramírez, Mario Alberto Vázquez Peña,
Castillo-Castillo, M., Ibáñez-Castillo, L. A., Valdés, J. B., Arteaga-Ramírez, R., & Vázquez-Peña, M. A. (enero-febrero, 2017). Análisis de sequías meteorológicas en la cuenca del río Fuerte, México. Tecnología y Ciencias del Agua, 8(1), 35-52.En este trabajo se realiza un análisis temporal y espacial de la sequía en la cuenca del río Fuerte para el periodo de 1961 a 2012. La cuenca del río Fuerte se ubica al noroeste de México, en la zona de baja presión, donde coinciden en latitud los grandes desiertos ...
Tópico(s): Climate variability and models
2017 - Mexican Institute of Water Technology | Tecnología y Ciencias del Agua
José María Arribas, Domingo A. Pascual‐Figal, Pedro L. Tornel-Osorio, Francisco Gutiérrez‐García, Julio J. García-Puente del Corral, Víctor G. Ray-López, Mariano Valdés‐Chávarri, Ramón Arcas-Meca,
Postoperative atrial fibrillation (PAF) is a frequent complication of coronary artery bypass grafting (CABG). Our aims were to study its epidemiology and to identify predictors in everyday clinical practice, while taking into account statin use, extracorporeal circulation, and new biomarkers of inflammation and ventricular stress.The study included 102 consecutive patients (65 [9] years, 72% male) who were undergoing CABG. Blood samples were taken the day before surgery to determine baseline levels ...
Tópico(s): Acute Myocardial Infarction Research
2007 - Elsevier BV | Revista Española de Cardiología (English Edition)
José María Arribas, Domingo A. Pascual‐Figal, Pedro L. Tornel-Osorio, Francisco Gutiérrez‐García, Julio J. García-Puente del Corral, Víctor G. Ray-López, Mariano Valdés‐Chávarri, Ramón Arcas-Meca,
La fibrilación auricular postoperatoria (FAP) es una complicación frecuente tras la cirugía de revascularización coronaria. Estudiamos su epidemiología y los predictores en la práctica actual, considerando el uso de estatinas, la circulación extracorpórea y los nuevos biomarcadores de inflamación y estrés ventricular. Se estudió a 102 pacientes consecutivos (65 ± 9 años, 72% varones) en los que se realizó cirugía coronaria. El día previo se obtuvieron las muestras plasmáticas para medida de proteína ...
Tópico(s): Acute Myocardial Infarction Research
2007 - Elsevier BV | Revista Española de Cardiología
Rafael C. Carrasco, Mikel L. Forcada, M. Ángeles Valdés-Muñoz, Ramón P. Ñeco,
There has been a lot of interest in the use of discrete-time recurrent neural nets (DTRNN) to learn finite-state tasks, with interesting results regarding the induction of simple finite-state machines from input–output strings. Parallel work has studied the computational power of DTRNN in connection with finite-state computation. This article describes a simple strategy to devise stable encodings of finite-state machines in computationally capable discrete-time recurrent neural architectures with ...
Tópico(s): Advanced Memory and Neural Computing
2000 - The MIT Press | Neural Computation
Paloma Hidalgo, Margarita Valdés Alemán, Ramón A. González,
Coronaviruses (CoV) are enveloped, plus-strand RNA viruses that have the largest known RNA genomes and infect birds and mammals, causing various diseases. Human coronaviruses (HCoVs) were first identified in the mid-1960s and have been known to cause enteric or respiratory infections. In the last two decades, three HCoVs have emerged, including the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which initiated the ongoing pandemic. SARS-CoV-2 causes a respiratory illness that presents ...
Tópico(s): Viral gastroenteritis research and epidemiology
2021 - Elsevier BV | Boletín Médico del Hospital Infantil de México
José M. Arribas-Leal, Domingo A. Pascual‐Figal, Pedro L. Tornel-Osorio, Juan A. Ruipérez-Abizanda, Mariano Valdés‐Chávarri, Ramón Arcas-Meca,
Se realizó un estudio retrospectivo de 7 pacientes adultos con síndrome de la cimitarra mediante examen clínico y ecocardiográfico. Los resultados fueron: infección respiratoria y disnea de medianos esfuerzos en el 90%, signo de la cimitarra en 4 (57%), dextrocardia en 5 (71%), comunicación interauricular en 5 (71%), uno de ellos con persistencia de conducto arterioso; 2 con persistencia de conducto arterioso, 1 de ellos con coartación de aorta y otro con aorta bivalva; dilatación de cavidades derechas ...
Tópico(s): Congenital Heart Disease Studies
2006 - Elsevier BV | Revista Española de Cardiología
Jorge López‐Beceiro, Ana Álvarez-García, Silvana de Abreu Martins, Begoña Álvarez García, Sonia Zaragoza, J. Menéndez-Valdés, Ramón Artiaga,
Tópico(s): Polymer Science and PVC
2015 - Springer Science+Business Media | Journal of Thermal Analysis and Calorimetry
F. Parreño, María Teresa Alonso, Ramón Álvarez-Valdés,
The glass cutting problem proposed by Saint Gobain for the 2018 ROADEF challenge includes some specific constraints that prevent the direct application of procedures developed for the standard cutting problem. On the one hand, the sheets to be cut have defects that make them unique and they must be used in a given order. On the other hand, pieces are grouped in stacks and the pieces in each stack must be cut in order. There are also some additional characteristics due to the technology being used, ...
Tópico(s): Manufacturing Process and Optimization
2020 - Elsevier BV | European Journal of Operational Research
Consuelo Parreño-Torres, Ramón Álvarez-Valdés, F. Parreño,
The multiport container ship stowage problem consists in determining the position of the containers on board a ship along its route with the objective of minimizing the number of unproductive moves required in the loading and unloading operations at each port. This paper presents an integer programming model for the problem and proposes several sets of valid constraints that bring its LP‐relaxation closer to an integer solution. Moreover, it presents a GRASP algorithm that generates stowage plans ...
Tópico(s): Advanced Manufacturing and Logistics Optimization
2019 - Hindawi Publishing Corporation | Mathematical Problems in Engineering
Shunji Tanaka, Kevin Tierney, Consuelo Parreño-Torres, Ramón Álvarez-Valdés, Rubén Ruíz,
The container pre-marshalling problem involves the sorting of containers in stacks so that there are no blocking containers and retrieval is carried out without additional movements. This sorting process should be carried out in as few container moves as possible. Despite recent advancements in solving real world sized problems to optimality, several classes of pre-marshalling problems remain difficult for exact approaches. We propose a branch and bound algorithm with new components for solving ...
Tópico(s): Optimization and Packing Problems
2019 - Elsevier BV | European Journal of Operational Research
Produção Nacional
Revisado por pares
Aline Aparecida de Souza Leão, Franklina M. B. Toledo, José Fernando Oliveira, Maria Antónia Carravilla, Ramón Álvarez-Valdés,
Irregular packing problems (also known as nesting problems) belong to the more general class of cutting and packing problems and consist of allocating a set of irregular and regular pieces to larger rectangular or irregular containers, while minimizing the waste of material or space. These problems combine the combinatorial hardness of cutting and packing problems with the computational difficulty of enforcing the geometric non-overlap and containment constraints. Unsurprisingly, nesting problems ...
Tópico(s): Vehicle Routing Optimization Methods
2019 - Elsevier BV | European Journal of Operational Research
Lídice Bernardo, Alequis Pavón, Lisset Hermida, Lázaro Gil, Iris Valdés, Sheila Cabezas, Ramón Linares, Mayling Álvarez, Ricardo Silva, Gerardo Guillén, Eszter Nagy, Petra Schlick, María G. Guzmán,
Here we evaluated the suitability of the synthetic adjuvant IC31® to potentiate the protective capacity of PD5 protein (domain III of the envelope protein of dengue 2 virus fused to the carrier protein P64k). Unlike Alum, PD5 mixed with IC31® induced complete protection against virus challenge in mice and increased IFN-γ secretion after in vitro re-stimulation. The induced antibody response was highly specific to the homologous serotype and showed both IgG1 and IgG2a subtypes. IC31® is a promising ...
Tópico(s): Viral Infections and Outbreaks Research
2011 - Elsevier BV | Vaccine
F. Parreño, Ramón Álvarez-Valdés,
The glass cutting problem proposed for the ROADEF 2018 challenge is a two-dimensional, three-stage guillotine cutting process, with an additional cut to obtain pieces in some specific situations. However, it is not a standard problem because it includes specific constraints. The sheets produced in the glass manufacturing process have defects that make them different and have to be used in order. The pieces to be cut are grouped into subsets and the pieces from each subset must be cut in order. We ...
Tópico(s): Advanced Manufacturing and Logistics Optimization
2021 - Elsevier BV | Omega
Consuelo Parreño-Torres, Hatice Çalık, Ramón Álvarez-Valdés, Rubén Ruíz,
We focus on a simplified container stowage planning problem where containers of different size and weight must be loaded and unloaded at multiple ports while maintaining the stability of the ship. We initially investigate how the difficulty in solving the problem changes with and without the consideration of container sizes and weight constraints. For this purpose, we provide integer programming formulations for the general problem as well as some special cases with identical container size and/ ...
Tópico(s): Advanced Manufacturing and Logistics Optimization
2021 - Elsevier BV | Computers & Operations Research
F. Parreño, Ramón Álvarez-Valdés, Rafael Martı́,
Maximum diversity problems arise in many practical settings from facility location to social networks, and constitute an important class of NP-hard problems in combinatorial optimization. There has been a growing interest in these problems in recent years, and different mathematical programming models have been proposed to capture the notion of diversity. They basically consist of selecting a subset of elements of a given set in such a way that a measure based on their pairwise distances is maximized ...
Tópico(s): Transportation Planning and Optimization
2020 - Elsevier BV | European Journal of Operational Research
Consuelo Parreño-Torres, Ramón Álvarez-Valdés, Rubén Ruíz, Kevin Tierney,
The pre-marshalling problem has been extensively studied in recent years with the aim of minimizing the number of movements needed to rearrange a bay of containers. Time is a more realistic objective for measuring process efficiency, and we show that it does not correlate with the number of movements. As a result, we study the problem of minimizing crane times and develop two exact approaches to solve it: an integer linear model, and a branch and bound algorithm, with new upper and lower bounds, ...
Tópico(s): Optimization and Packing Problems
2020 - Elsevier BV | Transportation Research Part E Logistics and Transportation Review
Juan Francisco Correcher, Ramón Álvarez-Valdés, José Manuel Tamarit,
Efficient management of operations in seaport container terminals has become a critical issue, due to the increase in maritime traffic and the strong competition between ports. In this paper we focus on two seaside operational problems: the Berth Allocation Problem and the Quay Crane Assignment Problem, which are considered in an integrated way. For the continuous BACAP problem with time-invariant crane assignment we propose a new mixed integer linear model in which the vessels can be moored at ...
Tópico(s): Urban and Freight Transport Logistics
2018 - Elsevier BV | European Journal of Operational Research