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Search Results: 1 - 10 of 405533 matches for " Emilio M Serrano "
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Ubik: a multi-agent based simulator for ubiquitous computing applications
Emilio Serrano,Juan A. Botia,Jose M. Cadenas
Journal of Physical Agents , 2009,
Abstract: This paper introduces the development of an infrastructure to study highly complex systems of Ambient Intelligence (AmI) which involve a large number of users. The key ideas about the development of a multi-agent based simulation (MABS) for such purposes, Ubik, are given. The paper also extrapolates effective technologies in the development of multi-agent systems (MAS) to the eld of MABS. In particular, the basis for the use of forensic analysis as a method to assist the analysis, understanding and debugging of Ubik in particular and the general MABS are set up.
Un nuevo Método para Mejorar el Proceso de Producción de Acido Bórico
Domínguez,Orlando J; Serrano,Emilio M; Flores,Jorge E; Michel,Raquel L;
Información tecnológica , 2011, DOI: 10.4067/S0718-07642011000100013
Abstract: this paper proposes a modification to the traditional process for obtaining boric acid with the addition of acid leaching split, to get a highly soluble product, as sodium pentaborate. in this way the mineral can be dissolved without heating, decreasing the amount of leaching reagent, thus saving energy. the ph of the clarified liquid is decreased leading to the precipitation of boric acid. the gangue runs out at different stages of precipitation and filtration, with its successive washes, improving process performance. the produced boric acid has characteristics, such as texture and purity, comparable with that obtained by traditional processes.
Un nuevo Método para Mejorar el Proceso de Producción de Acido Bórico A New Method to Improve the Production Process of Boric Acid
Orlando J Domínguez,Emilio M Serrano,Jorge E Flores,Raquel L Michel
Información Tecnológica , 2011,
Abstract: En este trabajo se propone una modificación al proceso tradicional para obtener ácido bórico, con el agregado fraccionado del ácido lixiviante, para lograr un producto altamente soluble, como el pentaborato de sodio. Con esto se consigue la disolución del mineral en frío con menor cantidad de reactivo lixiviante, ahorrando así energía. Al líquido clarificado se le disminuye el pH logrando así la precipitación del ácido bórico. La ganga se agota con diferentes etapas de precipitación y filtración, con sus consiguientes lavados, mejorando el rendimiento del proceso. El ácido bórico producido presenta características, tales como textura y pureza, comparables con el obtenido por los procesos tradicionales. This paper proposes a modification to the traditional process for obtaining boric acid with the addition of acid leaching split, to get a highly soluble product, as sodium pentaborate. In this way the mineral can be dissolved without heating, decreasing the amount of leaching reagent, thus saving energy. The pH of the clarified liquid is decreased leading to the precipitation of boric acid. The gangue runs out at different stages of precipitation and filtration, with its successive washes, improving process performance. The produced boric acid has characteristics, such as texture and purity, comparable with that obtained by traditional processes.
Uncovering Suitable Reference Proteins for Expression Studies in Human Adipose Tissue with Relevance to Obesity
Rafael Pérez-Pérez,Juan A. López,Eva García-Santos,Emilio Camafeita,María Gómez-Serrano,Francisco J. Ortega-Delgado,Wifredo Ricart,José M. Fernández-Real,Belén Peral
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0030326
Abstract: Protein expression studies based on the two major intra-abdominal human fat depots, the subcutaneous and the omental fat, can shed light into the mechanisms involved in obesity and its co-morbidities. Here we address, for the first time, the identification and validation of reference proteins for data standardization, which are essential for accurate comparison of protein levels in expression studies based on fat from obese and non-obese individuals.
Valoración del cumplimiento de la quimioprofilaxis antituberculosa en la población reclusa del centro penitenciario de Jaén
Romero Salda?a,Manuel; Vaquero Abellán,Manuel; Gallego Rubio,Ramón; Aguilera López,M? Dolores; Celis Cornejo,Juan Manuel de; Barquín García,Emilio; Zurita Serrano,Rosario;
Revista Espa?ola de Salud Pública , 1997, DOI: 10.1590/S1135-57271997000400007
Abstract: background: this study highlights the importance of anti-tubercular chemoprophylaxis with isoniazid to control and prevent tuberculosis in prisons. the relationship between compliance with the chemoprophylaxis and study factors was evaluated and we examined whether health education given in our prison motivated the prisoners to comply with this treatment. methods: compliance with chemoprophylaxis using isoniazid by 52 inmates of the jaén penal institution was studied for the period february to may 1995. the dose of isoniazid taken was calculated by means of the spectrophotometric determination of isoniazid metabolites in urine using the eidus hamilton method. likewise, the influence of variables such as sex, hiv infection, legal situation and cultural level on compliance was studied. results: out of 52 inmates, 23 (44.23%) were taking a daily dose of isoniazid that was considered to be effective and 29 inmates (55.77%) were taking less than the effective isoniazid dose for the chemoprophylaxis. with regard to the variables studied, greater compliance with the chemoprophylaxis was recorded among men (sex variable) and those inmates with a higher educational level (cultural level) although no significant differences were found. conclusions: compliance with the chemoprophylaxis among our inmates is inadequate although it matches similar studies that have been carried out on the prison population. this is not the case for the community population where compliance with chemoprophylaxis is greater. this low compliance forces us to review our current health education programme and to take steps that might increase this degree of compliance such as direct observation of treatment, a system of intermittent treatment, etc.
Uso de dietas artificiales para la cría de larvas y adultos de Ceraeochrysa cubana (Hagen) (Neuroptera: chrysopidae) Use of artificial diets for rearing larvae and adults of Ceraeochrysa cubana (Hagen) (Neuroptera: chrysopioae)
Vargas Serrano Camilo,Luque J. Emilio,Villanueva Alexander
Agronomía Colombiana , 1988,
Abstract: Se ensayaron tres dietas artificiales para la cría de larvas y tres dietas para la cría de adultos de Ceraeochrysa cubana. En la cría de larvas se emplearon las dietas de Hassan y Hagen (1978), Ponomoreva (1971) y una dieta constituida. por la combinación de las dietas anteriores y la utilizada por Vanderzant (1969, 1973). La primera dieta con la cual se obtuvieron los mejores resultados, se continuó evaluándola durante tres generaciones consecutivas. El tiempo promedio de desarrollo de los estados juveniles fue de 35,23 días, comparado con 17,4 días cuando se al imentaron con huevos de Sitotroga cerealella, el peso pupal promedio fue de 6,3 mg con la dieta artificial y de 8,6 mg con huevos de Sitotroga. Además del incremento del tiempo de desarrollo de los estados juveniles hasta la madurez (desunítorrnídad fisiológica) y bajo peso pupal, con el uso de estas dietas artificiales se incrementó la mortalidad juvenil y en los adultos obtenidos decreció la fecundidad, longevidad y fertilidad, mientras que cuando se alimentaron con huevos de S. cerealella, los anteriores parámetros biológicos se mantuvieron en un nivel constante durante la segunda y tercera generación. Al utilizar las tres dietas artificiales ensayadas en la cría de adultos de C. cubana se logró una alta fecundidad, fertilidad y longevidad, obteniéndose en promedio 490; 493 y 458 huevos/hembra/28 días. Three artificial diets for rearing larvae and three artificial diets for rearing adults of Ceraeochrysa cubana were tested. In the rearing larvae used diets were the Hassan and Hagen, (1978), Ponomoreva, (1971) and a diet composed by the combination of the precceding diets and the one used by Vanderzant, (1973). With the first diet which showed better results, the testing kept on for three consecutive generations; the average duration of development of the early stages was 35,23 days compared to 17,3 days when they were fed with S. cerealella eggs, the average pupal weight was 6,3 mg wiht diet number one compared to 8,6 mg when S. cerealella eggs were used. Besides the increase in the development duration of early phases up to maturity stages (physiological disdjustment) under pupal weight with fictitious diets use, juvenile mortaly was increased and in the grown - ups obtained decreased the fecundity, longevity and fertility, while when feeding was with S. cerealella eggs the preceeding standards of biological nature kept a constant level during second and third generations. In the using of three the tested artificial diets in the rearing of adults of C. cubana high fecundity was reached as w
Present needs in theachers’ initial training
Rosario Mérida Serrano
Revista Electronica Interuniversitaria de Formación del Profesorado , 2009,
Abstract: This article aims at outlining a reflection on some of the limitations that currently affect teachers’ initial training. To do so, we relied on studies and research, as well as in our professional experience and focused on the analysis of the following issues: the distance between teachers’ professional demands and the training they receive at university, the nature of the knowledge that teachers use in their practical teaching, the role played by values in initial training and the profile that teachers’ trainers should have.
Rich-club vs rich-multipolarization phenomena in weighted networks
M. Angeles Serrano
Physics , 2008, DOI: 10.1103/PhysRevE.78.026101
Abstract: Large scale hierarchies characterize complex networks in different domains. Elements at their top, usually the most central or influential, may show multipolarization or tend to club forming tightly interconnected communities. The rich-club phenomenon quantified this tendency based on unweighted network representations. Here, we define this metric for weighted networks and discuss the appropriate normalization which preserves nodes' strengths and discounts structural strength-strength correlations if present. We find that in some real networks the results given by the weighted rich-club coefficient can be in sharp contrast to the ones in the unweighted approach. We also discuss that the scanning of the weighted subgraphs formed by the high-strength hubs is able to unveil features contrary to the average: the formation of local alliances in rich-multipolarized environments, or a lack of cohesion even in the presence of rich-club ordering. Beyond structure, this analysis matters for understanding correctly functionalities and dynamical processes relying on hub interconnectedness.
Phase transition in the globalization of trade
M. Angeles Serrano
Quantitative Finance , 2006, DOI: 10.1088/1742-5468/2007/01/L01002
Abstract: Globalization processes interweave economic structures at a worldwide scale, trade playing a central role as one of the elemental channels of interaction among countries. Despite the significance of such phenomena, measuring economic globalization still remains an open problem. More quantitative treatments could improve the understanding of globalization at the same time that help a formal basis for comparative economic history. In this letter, we investigate the time evolution of the statistical properties of bilateral trade imbalances between countries in the trade system. We measure their cumulative probability distribution at different moments in time to discover a sudden transition circa 1960 from a regime where the distribution was always represented by a steady characteristic function to a new state where the distribution dilates as time goes on. This suggests that the rule that was governing the statistical behavior of bilateral trade imbalances until the 60's abruptly changed to a new form persistent in the last decades. In the new regime, the figures for the different years collapse into a universal master curve when rescaled by the corresponding global gross domestic product value. This coupling points to an increased interdependence of world economies and its onset corresponds in time with the starting of the last globalization wave.
A theoretical comparison between two ruminal electron sinks
Emilio M. Ungerfeld
Frontiers in Microbiology , 2013, DOI: 10.3389/fmicb.2013.00319
Abstract: Dihydrogen accumulation resulting from methanogenesis inhibition in the rumen is an energy loss and can inhibit fermentation. The objective of this analysis was to compare the energetic and nutritional consequences of incorporating H2 into reductive acetogenesis or additional propionate production beyond the acetate to propionate shift occurring along with methanogenesis inhibition. Stoichiometric consequences were calculated for a simulated fermentation example. Possible nutritional consequences are discussed. Incorporating H2 into reductive acetogenesis or additional propionate production resulted in equal heat of combustion output in volatile fatty acids (VFA). Incorporation of H2 into reductive acetogenesis could result in moderate decrease in ruminal pH, although whole-animal buffering mechanisms make pH response difficult to predict. Research would be needed to compare the microbial protein production output. There could be post-absorptive implications due to differences in VFA profile. Electron incorporation into reductive acetogenesis could favor energy partition toward milk, but increase risk of ketosis in high-producing dairy cows on ketogenic diets. Greater propionate production could favor milk protein production, but may be less desirable in animals whose intake is metabolically constrained, like feedlot steers. Because of the different nutritional implications, and because practical solutions to incorporate H2 into either pathway are not yet available, it is recommended to research both alternatives.
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