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Search Results: 1 - 10 of 40209 matches for " Diego Fernández;Azzopardi "
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Drop Size Measurements in a Laboratory Scale Venturi Scrubber
Alonso, Diego Fernández;Azzopardi, Barry J.;Gon?alves, José Ant?nio Silveira;Coury, José Renato;
Journal of the Brazilian Society of Mechanical Sciences , 2001, DOI: 10.1590/S0100-73862001000400008
Abstract: venturi scrubbers are high efficiency gas cleaners in which suspended particles are removed from gas streams by droplets formed by liquid atomisation, usually in the venturi throat. the size of the droplets formed is of fundamental importance to the performance of the equipment, both in terms of pressure drop and collection efficiency. in this study, drop sizes in a cylindrical laboratory scale venturi scrubber were measured using a laser diffraction technique. gas velocity and liquid to gas ratios varied from 50 to 90 m/s and 0.5 to 2.0 l/m3, respectively. water was inserted as perpendicular jets at the beginning of the throat. measurements were performed at three positions: two located along the throat, and the last one at the end of the diffuser. the data presented here are a typical example of pneumatic atomisation and can be relevant to other industrial applications such as combustion and engine technology. finally, results are compared to available correlations and the validity of these equations is discussed.
Drop Size Measurements in a Laboratory Scale Venturi Scrubber
Alonso Diego Fernández,Azzopardi Barry J.,Gon?alves José Ant?nio Silveira,Coury José Renato
Journal of the Brazilian Society of Mechanical Sciences , 2001,
Abstract: Venturi scrubbers are high efficiency gas cleaners in which suspended particles are removed from gas streams by droplets formed by liquid atomisation, usually in the venturi throat. The size of the droplets formed is of fundamental importance to the performance of the equipment, both in terms of pressure drop and collection efficiency. In this study, drop sizes in a cylindrical laboratory scale venturi scrubber were measured using a laser diffraction technique. Gas velocity and liquid to gas ratios varied from 50 to 90 m/s and 0.5 to 2.0 l/m3, respectively. Water was inserted as perpendicular jets at the beginning of the throat. Measurements were performed at three positions: two located along the throat, and the last one at the end of the diffuser. The data presented here are a typical example of pneumatic atomisation and can be relevant to other industrial applications such as combustion and engine technology. Finally, results are compared to available correlations and the validity of these equations is discussed.
Concentración económica en la región pampeana: El caso de los fideicomisos financieros
Fernández,Diego Ariel;
Mundo agrario , 2010,
Abstract: in the last decade of the twentieth century, the trend of economic concentration of the agrarian production of the pampas region was strengthen, expressed in a mayor reduction of the sector′s firms. even when there is no census data to quantify it after the 2001-2002 crisis, there are several signs that imply that this process continues in the present. big lessee capitals appear on the leading roll, managing to obtain economies of scale by taking a large tract of land, which allows them to displace their smaller rivals thanks to their capacity to propose the owners a bigger rent or better conditions to pay it. this paper offers the results of an investigation about one of the juridical forms that this process adopts: the setting up of financial trust funds (ftf). the growth of this kind of financial tool since 2004 has been impressive, and it was partially used in the agrarian sector. after systematize the information of the ftfs placed in the market in the 2004-2008 period, this paper focus its attention on the ones that finance agrarian activities. it estimates the weight they have in the capitalization of the sector, analyzing the productive strategies and characteristics of those that have per purpose the sowing in leased lands, allowing us to offer concrete figures about the microeconomic base of the sector's concentration.
El director de sistemas, como impulsor de la innovación en la empresa
Diego Fernández Casado
Universia Business Review , 2006,
Abstract: La función del director de sistemas de información, también conocido como CIO (Chief Information Officer), ha evolucionado. Anteriormente su papel estaba enfocado, fundamentalmente, a asegurar que toda la plataforma tecnológica estuviera preparada para dar soporte a las operaciones de la empresa. En este momento, su función va más allá y entra en el desarrollo de la estrategia de negocio. De hecho los directores de sistemas tienen un papel fundamental como impulsores de la innovación en las empresas. A lo largo de este artículo se analizan los tres retos fundamentales con los que se encuentran estos profesionales en su papel como agentes de la innovación: la transformación del modelo de negocio, impulsar la colaboración con terceros e incrementar el grado de integración entre la tecnología y negocio.
Eventos de remoción en masa en la provincia de Tucumán: tipos, características y distribución Mass wasting events in Tucumán province: Types, characteristics and distribution
Diego S. Fernández
Revista de la Asociación Geológica Argentina , 2009,
Abstract: La provincia de Tucumán tiene una superficie de 22.524 km2, de los cuales el 25 % aproximadamente corresponde a un relieve monta oso. Este hecho, sumado a la presencia de climas de carácter monzónico con precipitaciones intensas (> 100 mm/24 h), configura un panorama propicio para el desarrollo de movimientos en masa en las laderas de las principales cadenas monta osas de la provincia. En este trabajo se describen 279 eventos de movimientos en masa. Para su identificación se utilizaron fotografías aéreas, imágenes satelitales multitemporales y controles de campo. El análisis de los factores de control (precipitaciones, inclinación y orientación de las pendientes, litología) se realizó bajo un entorno SIG. Los tipos de movimientos descriptos corresponden a deslizamientos poco profundos, flujos y avalanchas de detritos, caídas de rocas y movimientos complejos. La distribución espacial de estos movimientos se halla controlada fundamentalmente por las precipitaciones, como factor desencadenante, y por la pendiente y el grado de meteorización de los materiales, como factores de control. The province of Tucumán has an area of 22,524 km2, where almost 25% is covered by a mountainous relief. This fact, plus the presence of monsoon climate type with intense precipitations (> 100 mm/24 h) configure a favourable scenario for the development of mass movements over the main mountain slopes of the province. In this paper 279 mass movement events are described. The identification was carried out by the use of aerial photographs, multitemporal satellite images and field controls. The analysis of the control factors (precipitations, slope angle and orientation, lithology) was made under a SIG environment. The types of movements described are shallow landslides, debris flows, debris avalanches, rock falls and complex movements. The spatial distribution of these movements is controlled mainly by the rainfalls, as triggering mechanisms, and slope angle and weathering of rocks as causal factors.
Economic concentration in the Pampeana region: The case of the financial trustfunds Concentración económica en la región pampeana: El caso de los fideicomisos financieros
Diego Ariel Fernández
Mundo agrario , 2010,
Abstract: In the last decade of the twentieth century, the trend of economic concentration of the agrarian production of the pampas region was strengthen, expressed in a mayor reduction of the sector s firms. Even when there is no census data to quantify it after the 2001-2002 crisis, there are several signs that imply that this process continues in the present. Big lessee capitals appear on the leading roll, managing to obtain economies of scale by taking a large tract of land, which allows them to displace their smaller rivals thanks to their capacity to propose the owners a bigger rent or better conditions to pay it. This paper offers the results of an investigation about one of the juridical forms that this process adopts: the setting up of Financial Trust Funds (FTF). The growth of this kind of financial tool since 2004 has been impressive, and it was partially used in the agrarian sector. After systematize the information of the FTFs placed in the market in the 2004-2008 period, this paper focus its attention on the ones that finance agrarian activities. It estimates the weight they have in the capitalization of the sector, analyzing the productive strategies and characteristics of those that have per purpose the sowing in leased lands, allowing us to offer concrete figures about the microeconomic base of the sector's concentration. Durante la última década del siglo XX, la producción agropecuaria de la región pampeana ve reforzada su tendencia a la concentración económica, reduciéndose de forma muy significativa el número de EAPs. Si bien no existen relevamientos censales que den cuenta de lo ocurrido tras la crisis de 2001-2002, numerosos indicios se alan que este proceso continúa en la actualidad. Aparecen como protagonistas del mismo grandes capitales arrendatarios que logran, al tomar superficies lo suficientemente amplias, obtener economías de escala que les permiten desplazar a rivales menores merced a su posibilidad de ofrecer arriendos superiores. En este artículo se ofrecen los resultados de una investigación sobre una de las formas jurídicas que adopta este proceso: la constitución de Fideicomisos Financieros. Esta ha sido una herramienta financiera de muy alto crecimiento desde 2004, y parcialmente se ha volcado al sector agrario. Luego de compilar la información sobre la totalidad de FF colocados en el período 2004-2008, se procedió a tipificarlos, con especial atención en aquellos que financiaron al agro. Se estimó así el peso que han tenido en su capitalización, y se analizan las estrategias y características productivas de aquellos que tiene
No sólo mediante la desregulación se favorece la concentración: impacto del intervencionismo cambiario sobre la estructura pampeana
Diego Ariel Fernández
Revista Theomai , 2011,
Abstract:
?Inseguridad o temor?: Impunidad, politiquería y posibles soluciones
Castro Fernández,Juan Diego;
Medicina Legal de Costa Rica , 2009,
Abstract: over the past fifteen years, the insecurity that supports costa rican society, has worsened dramatically, while the criminal policy of recent governments has been inconsistent and ineffective. some mantain that the problem is of perception or simple fear, but from july 2007 to july 2008, 28% of of the homes of these country said that they had been victims of any crime or aggression, while in 1997 this percentage was of 15%. also the judicial level of answer to the victims of delinquency does not superpasse 10% and impunity has grown excessively. the solutions at the legislative, police, judiciary and prisons levels are simple but they have a great obstacle: the lack of will of politician leaders.
La responsabilidad penal y civil del perito médico
Castro Fernández,Juan Diego;
Medicina Legal de Costa Rica , 2001,
Abstract: the medical expert, wharever his especiality maybe, including the forensic medical expert, is subject of criminal and civil responsability. this essay analites defferent legislations which regulate the expert. he can be put in prison from one to five years if he affirms something false or if he doesn't say the truth, completely of in part. this essay also talks about the state`s responsability for the criminal conduct of an official expert.
Trauma por la inseguridad ciudadana y la violencia: impunidad y política criminal
Castro Fernández,Juan Diego;
Medicina Legal de Costa Rica , 2003,
Abstract: the precipitation of the costa rican contraventional rights, gestated by a university experiment and provoked by the sentences of the constitutional court; the high percentages of impunity sprouting in the last five years; the increase of the atrocity and the frequency of crimes committed against kids and women; the forgotten and abandoned victims in criminal law and penal processes; the punitive bawdry and the lack of a defined criminal policy in costa rica, are the most common factors which traumatize our society.
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