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Search Results: 1 - 10 of 45033 matches for " SALVADOR HERNáNDEZ-MORENO "
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CURRENT TECHNOLOGIES APPLIED TO URBAN SUSTAINABLE DEVELOPMENT
Silverio HERNáNDEZ-MORENO
Theoretical and Empirical Researches in Urban Management , 2009,
Abstract: The present work organizes information in a systematized way, on environmental technologies applied to each of the tasks and activities that are performed in the cities, urban planning and development. These technologies are an updated part of all the technologies that can be applied, therefore, it is the state-of-the-art of new technologies applied to urban sustainable development which mostly are processes, instruments of measurement, simulators, equipment, materials, Software and Hardware that are of great help for urbanism designers and promoters of urbanism in the cities development. These technologies, which are described in the present article, have been selected on the basis of their up-to-dateness and application in the main sectors or fields of development and it is important to mention that only the most recent and influential on urban development and environmental technology have been chosen. The main objective is to provide an overview of the state-of-the art of these environmental technologies, and how we, designers, architects and promoters of urban development, can apply and use a number of technologies in urban planning with an environmental approach.
Efecto de Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) en la actividad parasitoide de Anagyrus kamali (Hymenoptera: Encyrtidae) sobre Maconellicoccus hirsutus (Hemiptera: Pseudococcidae) Effect of Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) in the parasitoid activity of Anagyrus kamali (Hymenoptera: Encyrtidae) on Maconellicoccus hirsutus (Hemiptera: Pseudococcidae)
SALVADOR HERNáNDEZ-MORENO,HéCTOR GONZáLEZ-HERNáNDEZ,J. REFUGIO LOMELI-FLORES,ESTEBAN RODRíGUEZ LEYVA
Revista Colombiana de Entomología , 2012,
Abstract: En varios países se ha introducido Anagyrus kamali y Cryptolaemus montrouzieri para el control de la cochinilla rosada del hibisco (CRH) Maconellicoccus hirsutus, pero no se han establecido las interacciones entre estos enemigos naturales. En el presente trabajo se evaluó en condiciones de laboratorio la interacción de C. montrouzieri (larvas de cuarto estadio y hembras adultas) en la actividad parasitoide de A. kamali sobre la CRH. Para determinar la interacción entre el depredador y el parasitoide se realizaron pruebas de liberación individual y simultánea de ambas especies en pruebas de elección y no elección, utilizando como alimento ninfas de tercer estadio de CRH no parasitadas y parasitadas por A. kamali. Las ninfas parasitadas tenían diferentes periodos de maduración del parasitoide (huevo, larva joven, larva madura, pupa joven y pupa madura). Los resultados mostraron que la presencia de C. montrouzieri redujo la actividad parasitoide de A. kamali a un 2,2 y 5%. En las pruebas de elección C. montrouzieri no discriminó entre CRH sanas y parasitadas de menos de 5 días. En las pruebas de no elección, los adultos y larvas de C. montrouzieri disminuyeron su actividad depredadora sobre CRH parasitadas de más de 6 días, posiblemente debido al endurecimiento de las momias de CRH. Los resultados del presente trabajo apoyan la hipótesis de que en la interacción de C. montrouzieri y A. kamali existe un efecto de interferencia en presencia de un recurso limitado, ya que la presencia del depredador disminuyó la actividad parasitoide de A. kamali en el control de CRH. In several countries, Anagyrus kamali and Cryptolaemus montrouzieri have been introduced for the biological control of the pink hibiscus mealybug (PHM) Maconellicoccus hirsutus, but there is not a formal study to assess the interaction between those natural enemies. In the present study we evaluated, under laboratory conditions, the interaction of C. montrouzieri (forth-instar larvae and adult female) in A. kamali parasitoid activity on PHM. Individual and simultaneous liberations of both species, using choice and no-choice tests, were made in order to determine the interaction between the predator and the parasitoid. Third PHM nymphs parasitized by A. kamali at different parasitoid maturation periods (egg, young larvae, mature larvae, young pupae and mature pupae) were used as hosts. The results showed that C. montrouzieri reduced the parasitoid activity of A. kamali to 2.2 and 5%. In the choice test, C. montrouzieri did not discriminate against wealthy PHM and parasitoized under five days. In
Using thermal analysis to evaluate the fire effects on organic matter content of Andisols
J. Neris,J.M. Hernández-Moreno,C. Jiménez,M. Tejedor
Flamma , 2013,
Abstract: Soil organic compounds play a relevant role in aggregate stability and thus, in the susceptibility of soils to erosion. Thermal analysis (N2 and air) and chemical oxidation techniques (dichromate and permanganate oxidation) were used to evaluate the effects of a forest fire on the organic matter of Andisols. Both thermal analysis and chemical methods showed a decrease in the organic matter content and an increase in the recalcitrance of the remaining organic compounds in the burned zones. Thermal analysis indicated an increase in the thermal stability of the organic compounds of fire-affected soils and a lower content of both labile and recalcitrant pools as a consequence of the fire. However, this decrease was relatively higher in the labile pool and lower in the recalcitrant one, indicative of an increase in the recalcitrance of the remaining organic compounds. Apparently, black carbon did not burn under our experimental conditions. Under N2, the results showed a lower labile and a higher recalcitrant and refractory contents in burned and some unburned soils, possibly due to the lower decomposition rate under N2 flux. Thermal analysis using O2 and the chemical techniques showed a positive relation, but noticeable differences in the total amount of the labile pool. Thermal analysis methods provide direct quantitative information useful to characterize the soil organic matter quality and to evaluate the effects of fire on soils.
Game rhythm and stoppages in soccer. A case study from Spain
JOSé HERNáNDEZ-MORENO,ANTONIO GóMEZ-RIJO,ULISES CASTRO,ANTONIO GONZáLEZ-MOLINA
Journal of Human Sport and Exercise , 2011,
Abstract: The purpose of this paper was to quantify and analyze the participation/pause game times and stoppages of 11-a-side soccer. A total of 617 players of 44 Spanish men’s teams and 33 matches of the 2007/08 and 2008/09 men’s soccer players of 2nd division A and B and 3rd division were studied. The methodology used is observational and systematic, active and non-participating and with an observational instrument based on a category system. The variables studied were: Stoppages and Game Rhythm. The most frequent stoppage is out of bound (mean±SD) (59.03±10.15), followed by fouls (37.33±7.09). The stoppage which registers the longest duration (in hours, minutes and seconds) is foul (16’35”±3’48”), followed by out of bound (14’30”±3’26”). Regarding game rhythm the real time of each match totaled an average of 1h36’14”±2’03” seconds. The actual time of play is on average 49’±4’44” while the pause time is 47’14”±5’23”seconds. In the description of the implications of pause time in the game dynamics of soccer, some regularities can be observed; such as the fact that the most frequent stoppages are those made due to fouls and out of bound and that the duration of the majority of these stoppages varies within a range of 4 to 7 seconds. The pauses have shown to be a major element in the study of soccer game rhythm because they take at least half the total time of the match. Consistent with this, it is understood that game rhythm can easily be improved with regulatory modifications such as the elimination of interruptions because of substitutions.
ANáLISIS DEL JUEGO DE ATAQUE EN BALONMANO FEMENINO | ANALYSIS OF ATTACK STRATEGIES ON WOMEN'S HANDBALL
José-Mario Hernández-Pérez,ángel-José Rodríguez-Fernández,José Hernández-Moreno,Pedro-Antonio álvarez-Armas
ágora para la Educación Física y el Deporte , 2010,
Abstract: RESUMEN.- Este estudio examinó la específica organización del juego de ataque en balonmano femenino. En concreto, hemos explorando el peso específico de los dos posibles tipos de ataque: posicional y contraataque. Para ello, hemos analizado los partidos de un mismo equipo de División de Honor Femenina durante la temporada 2008/2009 mediante metodología de la observación sistemática, directa y no participante. Hemos estudiado más de 2000 jugadas de ataque y 900 lanzamientos a portería, determinando de esta manera los índices de efectividad. El análisis estadístico reveló que existe una mayor eficacia del contraataque frente al juego posicional, además de una mayor relación con la victoria final. ABSTRACT.- This study focuses on the specific organization of the attacking strategies in women's handball. In particular, we explore the specific weight of the two possible modalities of attack: positional and counterattack. To do so, during the 2008/2009 season, we have analyzed through a systematic observation methodology, direct and non-participant, the matches of a team that plays in the First Division of Women's Handball. To determine the rates of effectiveness, we have studied more than 2000 attacks and 900 throws on goal. Statistical analysis revealed that counterattack is more effective than positional play, and that it has a closer relationship with victory.
Derecho a la salud de la población desplazada: el caso de las mujeres del Auto 092, medellín, antioquia
Fernández-Moreno,Sara Yaneth;
Revista Gerencia y Políticas de Salud , 2010,
Abstract: medellin is the second largest city in the reception of internally displaced population, product of the armed conflict of the country. even though sexual violence in this context is a state crime against humanity without limitations of power to prosecute, the country is barely beginning actions to undertake the problem, together with the processes of reparation, restitution and non-repetition, from differential treatment and gender-sensitive approaches. it is crucial to approach sexual violence from the actors of the armed conflict through the recognition of health as a fundamental human right, and from the gender-sensitive and socio-sanitary perspectives. however, in the advancement made so far, it can be argued that the essential guaranties of the right that these women have -in their condition of victims- become scarcely administrative, and they have a high risk of being re-victimized, in a process whereby the different governmental instances -including the instances of health care in charge of the attention to this population- do not keep the minimal attention protocols in the particular circumstances of these women.
Changes in epilithic diatom assemblages in a Mediterranean high mountain lake (Laguna de La Caldera, Sierra Nevada, Spain) after a period of drought
Pedro M. SáNCHEZ-CASTILLO,Eduardo J. LINARES-CUESTA,D. FERNáNDEZ-MORENO
Journal of Limnology , 2008, DOI: 10.4081/jlimnol.2008.49
Abstract: The epilithic diatom assemblages studied in the high mountain lake “La Caldera” (Granada, Spain) from 1996 to 1998 went through two clearly different stages. The initial one, in 1996, corresponded to the reflooding of the basin after a severe drought and was composed mainly of the colonising species Fragilaria rumpens, together with a lesser presence of Nitzschia sublinearis and Hantzschia amphioxys. The predominant presence of F. rumpens at the end of the summer of 2006 coincided with low species diversity (values of Shannon and Wiener Index: 0.3-0.6). During the following two years another assemblage established itself, dominated by Achnanthidium minutissimum, which is considered to be more stable and widespread among the lakes of the Sierra Nevada. The most notable subdominant species (less than 20% of relative abundance) in this assemblage were: Encyonema minutum, Encyonopsis microcephala and Navicula cryptocephala. The diversity values during this second period were much higher than in the first: 1.0-2.2. Nutrient concentrations were measured separately in the limnetic (epilimnetic) and benthic (epilithic) environments. These abiotic parameters show that the dynamics of ammonia and silica were much the same in both, showing a gradual decrease from the beginning to the end of the study period. Epilimnetic phosphorus followed a similar pattern to ammonia and silica. In the epilithon, nitrates and phosphates increased during the first year, only to descend notably during the second. The effect of other environmental parameters such as temperature and the preceding drought on the dynamics of the diatom assemblage are discussed. Ratio DIN:SRP let us test the different degrees of phosphorus limitation in epilithon and epilimnion environments; our results suggest that phosphorus limitation of primary production in high mountain lakes is much more severe in the limnetic environment that it is in the epilithon.
Diabetes and Stroke Prevention: A Review
Jonathan Hewitt,Luis Castilla Guerra,María del Carmen Fernández-Moreno,Cristina Sierra
Stroke Research and Treatment , 2012, DOI: 10.1155/2012/673187
Abstract: Stroke and diabetes mellitus are two separate conditions which share multiple common threads. Both are increasing in prevalence, both are diseases which affect blood vessels, and both are associated with other vascular risk factors, such as hypertension and dyslipidemia. Abnormal glucose regulation, of which diabetes is one manifestation, is seen in up to two-thirds of people suffering from an acute stroke. Surprisingly, aggressive management of glucose after an acute stroke has not been shown to improve outcome or reduce the incidence of further strokes. More encouragingly, active management of other cardiovascular risk factors has been demonstrated to prevent stroke disease and improve outcome following a stroke in the diabetic person. Hypertension should be treated with a target of 140/80?mmHg, as a maximum. The drug of choice would be an ACE inhibitor, although the priority is blood pressure reduction regardless of the medication chosen. Lipids should be treated with a statin whatever the starting cholesterol. Antiplatelet treatment is also essential but there are no specific recommendations for the diabetic person. As these conditions become more prevalent it is imperative that the right treatment is offered for both primary and secondary prevention in diabetic people, in order to prevent disease and minimize disability. 1. Introduction Diabetes mellitus (DM) is a common problem whose prevalence is increasing due to population aging and the growing problem of obesity. According to the World Health Organization (WHO), the prevalence of diabetes for all age groups worldwide is estimated to be approximately 2.8%, and the total number of people with diabetes is projected to rise from 171 million in 2000 to 366 million in 2030 [1]. In the United States alone over 23 million people have diabetes, and the number of people with diabetes diagnosed is estimated to increase 165% between 2000 and 2050 [2]. Abnormal glucose regulation can occur in a number of different clinical situations: diabetes, impaired glucose tolerance (IGT), or in times of acute illness. Diabetes is the clinical condition present when glucose is chronically raised. It can remain undiagnosed in asymptomatic individuals while remaining a risk factor for the development of stroke. IGT is a condition where glucose is not regulated properly but remains at levels below that of frank diabetes. Individuals are usually asymptomatic but remain at increased risk of diabetic complications and the condition often proceeds the development of diabetes. In times of medical stress blood glucose also
Exotic and conventional superconductivity in a Dirac supersymmetric scheme
M. Moreno,R. M. Méndez-Moreno,S. Orozco,M. A. Ortíz,M. de Llano
Physics , 1994,
Abstract: A new pairing theory for many-fermion systems is obtained via the Dirac supersymmetry framework recently introduced to describe Dirac particles in external potentials. It is shown that the standard Bogoliubov-Valatin canonical transformation treatment of the quasi-particle BCS singlet pairing mechanism naturally falls within this framework. Straightforward generalizations in which the fermions can be ascribed $ \nu$ {\it components} are shown to lead to enhanced gap energies and critical temperatures as in the case of cuprate superconductors without invoking a stronger electron-boson coupling. The new $T_{c}^{max}$ limit is $T_c^{max} = \nu T_c^{BCS}$, with $T_c^{BCS} \approx 40^0 K$.
Diabetes and Stroke Prevention: A Review
Jonathan Hewitt,Luis Castilla Guerra,María del Carmen Fernández-Moreno,Cristina Sierra
Stroke Research and Treatment , 2012, DOI: 10.1155/2012/673187
Abstract:
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