IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
A comparison between GPM Dual-frequency Precipitation Radar and ground-based radars located in So... more A comparison between GPM Dual-frequency Precipitation Radar and ground-based radars located in South America and the Caribbean is presented. The analysis compares radar variables from both system during overpasses of GPM over ground-based radars in the region of interest. Attenuation and bias correction is performed to ground radar data. The results show the potential of GPM to calibrate and monitor weather radars and subsequently using them for ground validation in Latin America and the Caribbean.
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
This paper describes the deployment and features of CSU-CHIVO radar during the RELAMPAGO campaign... more This paper describes the deployment and features of CSU-CHIVO radar during the RELAMPAGO campaign in Argentina. Intercomparison with GPM-DPR is done using Volume Matching. Vertical profile analysis of storms is also shown and a list of GPM overpasses and summary of the tallest storms during the campaign are also included. The results show that CHIVO agree well with GPM in terms of reflectivity and microphysical structure of clouds and show the value of CHIVO for ground validation.
: The labelled preparation of the 'B' type botulismotoxin was obtained from the cultural ... more : The labelled preparation of the 'B' type botulismotoxin was obtained from the cultural fluid after growing 'Cl. botulinum' on a medium containing S35-methionine. The preparation was purified by a two-fold precipitation with ammonium sulfate and subsequent dialysis in the running fresh and distilled water. The obtained preparation of dry tagged botulisomotoxin was radioactive in the range of 1 mc/mg, while its toxicity equalled 5,000 Dlm/mg. The distribution of the labelled preparation was studied on white mice every 20, 60 and 150 minutes after an intravenous injection of 1,000 Dlm. The investigation covered: blood, brain, muscles, liver, kidneys, lungs, heart and intestines. The toxin preparation was found to rapidly find its way from the blood flow into body tissues. The highest radioactivity rate at all periods of the intoxication was recorded in the lungs, and the lowest - in the blood. During 150 minutes after intravenous administration of the tracer preparati...
RELAMPAGO (Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with ... more RELAMPAGO (Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with Adaptive Ground Observations) was an international field campaign that took place in Argentina near Sierras de Cordoba. It had an Intense Observing Period (IOP) from November 1st to December 15th of 2018 and an extended period that went until January 31st of 2019. In this paper we study Colorado State University C-band Hydrological Instrument for Volumetric Observation (CSU-CHIVO) and cross-compare it with GPM-DPR during the field campaign. CHIVO is also compared with C-band Scan Precipitation Radar 2 (CSAPR2) that is part of ARM and also was deployed during RELAMPAGO. Both radars were in the field for IOPs and the extended period.
Extended Abstract Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processe... more Extended Abstract Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with Adaptive Ground Observations (RELAMPAGO) field campaign has been conducted in the lee of the Andes Mountains in central Argentina. The lee of the Andes Mountains in central Argentina region is known for its high impact weather and some of the intense convective systems in the world. The intense events occur in terms of large hail (and the frequency of occurrences) and extreme lightning activities. However, the observations needed for the study of the convective events are scarce; this has been addressed during the RELAMPAGO experiment by performing various ground-based and airborne measurements. The repeated storms in this region have been sampled during the RELAMPAGO field campaign to study science questions related to the deep convective initiation, severeweather generation, and various stages of storm development [1]. As part of the experimental setup for RELAMPAGO, various ins...
Este libro trata sobre el acceso a la justicia de las personas privadas de libertad a partir de u... more Este libro trata sobre el acceso a la justicia de las personas privadas de libertad a partir de una tematica en especifico, que es la aplicacion de sanciones disciplinarias al interior de los penales. La publicacion de este libro que reune una investigacion tanto de los estandares internacionales en la materia como de la situacion en Chile, ha sido posible en el marco del proyecto “Acceso a la justicia de grupos en condicion de vulnerabilidad: privados de libertad y mujeres indigenas” a cargo del Centro de Derechos Humanos de la Facultad de Derecho de la Universidad de Chile que tiene como institucion socia al Instituto Nacional de Derechos Humanos y esta patrocinado por el Instrumento Europeo para la Democracia y los Derechos Humanos.
Por uso indiscriminado de pesticidas, segun la Organizacion Mundial de la Salud, tres millones de... more Por uso indiscriminado de pesticidas, segun la Organizacion Mundial de la Salud, tres millones de personas se intoxican al ano. En Ecuador segun datos del Ministerio de Salud Publica, las intoxicaciones por plaguicidas han aumentado en los ultimos cinco anos en 24,4%. En cultivadores fruticolas de Patate- Ecuador se evaluo clinica y epidemiologicamente los niveles de la colinesterasa (ChE), que estan asociados a toxicidad de los plaguicidas organofosforados (POFs) y los factores de riesgo existentes. Se determi- no la actividad de la colinesterasa serica en 250 muestras de fruticultores que emplean pesticidas, empleando la tecnica de TECO DIAGNOSTICS (PTC) con fotometro Mindray Ba-88-A, utilizado en quimica sanguinea. Como resultados del estudio, se obtuvo el valor medio de colinesterasa serica de 5.629,25 u/l; asi mismo, el 14,4% de los muestreados presentaron valores de colinesterasa menores a 4.000 u/l y mayores a 7.000 u/l. De los valores extremos con mas de 7.000 u/l, el 64% fu...
This paper presents microphysical inference retrievals obtained from spectral polarimetry during ... more This paper presents microphysical inference retrievals obtained from spectral polarimetry during the Relampago (Remote sensing of Electrification, Lightning, And Mesoscale/Microscale Processes with...
Bulletin of the American Meteorological Society, 2021
This article provides an overview of the experimental design, execution, education and public out... more This article provides an overview of the experimental design, execution, education and public outreach, data collection, and initial scientific results from the Remote Sensing of Electrification, Lightning, and Mesoscale/Microscale Processes with Adaptive Ground Observations (RELAMPAGO) field campaign. RELAMPAGO was a major field campaign conducted in the Córdoba and Mendoza provinces in Argentina and western Rio Grande do Sul State in Brazil in 2018–19 that involved more than 200 scientists and students from the United States, Argentina, and Brazil. This campaign was motivated by the physical processes and societal impacts of deep convection that frequently initiates in this region, often along the complex terrain of the Sierras de Córdoba and Andes, and often grows rapidly upscale into dangerous storms that impact society. Observed storms during the experiment produced copious hail, intense flash flooding, extreme lightning flash rates, and other unusual lightning phenomena, but f...
Este no es un trabajo generado por la confrontacion de complejos problemas urbanos, es mas bien l... more Este no es un trabajo generado por la confrontacion de complejos problemas urbanos, es mas bien la respuesta a una responsabilidad colectiva, la cual es la de prever la adaptacion de la estructura urbana de la ciudad. Responde al derecho de construir una ciudad, caracterizada con la escala y una comunidad identificable. La conviccion de este trabajo, no es el pensar que con la sola aplicacion del plan se tiene una buena colectividad, sino mas bien, es de propender y fortalecer la creacion de un espacio y ambiente que propicie el desarrollo de ella
Two groups of autochthonous Pura Raza Galega (PRG) horses, one comprising 483 animals under a sil... more Two groups of autochthonous Pura Raza Galega (PRG) horses, one comprising 483 animals under a silvopasturing regime, and the other comprising 72 PRG horses managed in farms, were used to analyse the effect of silvopasture on infection by endoparasites. Results were considered according to the age and the sex of the horses. Faecal samples were individually collected from each animal and analysed by the coprological flotation, sedimentation and migration techniques. Coprocultures were also done to identify the main strongylid genera affecting the horses. Eggs from the gastrointestinal nematoda Parascaris equorum, strongyles and Oxyuris equi were the only endoparasites observed in the faeces of the horses. Larvae of Trichonema and Cyalocephalus spp. (small strongyles) and Strongylus and Triodontophorus (large strongyles) were identified in the coprocultures. The silvopasturing horses had the highest prevalence of the helminth parasites. The percentage of horses passing ascarid eggs was significantly higher in pasturing horses younger than 3 years. The prevalence of strongyles was statistically greater in the oldest grazing equines. Mares reached the highest prevalence of helminth egg output. Our results showed that native horses kept under silvopasture had the highest prevalence of the ascarids, strongyles and oxyurids, possibly due to their exposure to contaminated grazing areas, lack of appropriate feeding and control of their health status. We conclude that silvopasture increases the presence of infection by gastrointestinal nematoda in wild horses, especially by strongyles. Suitable measures to control parasitic diseases affecting horses in silvopasture should be considered in those systems.
El papel social del lenguaje y su repercusión en la formación de la personalidad de los adolescen... more El papel social del lenguaje y su repercusión en la formación de la personalidad de los adolescentes y jóvenes motivan la realización de estudios lingüísticos para conocer las particularidades del lenguaje que hablan determinados grupos de estos, por los que ellos representan para el desarrollo humanista de las sociedades.
IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, 2018
A comparison between GPM Dual-frequency Precipitation Radar and ground-based radars located in So... more A comparison between GPM Dual-frequency Precipitation Radar and ground-based radars located in South America and the Caribbean is presented. The analysis compares radar variables from both system during overpasses of GPM over ground-based radars in the region of interest. Attenuation and bias correction is performed to ground radar data. The results show the potential of GPM to calibrate and monitor weather radars and subsequently using them for ground validation in Latin America and the Caribbean.
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
This paper describes the deployment and features of CSU-CHIVO radar during the RELAMPAGO campaign... more This paper describes the deployment and features of CSU-CHIVO radar during the RELAMPAGO campaign in Argentina. Intercomparison with GPM-DPR is done using Volume Matching. Vertical profile analysis of storms is also shown and a list of GPM overpasses and summary of the tallest storms during the campaign are also included. The results show that CHIVO agree well with GPM in terms of reflectivity and microphysical structure of clouds and show the value of CHIVO for ground validation.
: The labelled preparation of the 'B' type botulismotoxin was obtained from the cultural ... more : The labelled preparation of the 'B' type botulismotoxin was obtained from the cultural fluid after growing 'Cl. botulinum' on a medium containing S35-methionine. The preparation was purified by a two-fold precipitation with ammonium sulfate and subsequent dialysis in the running fresh and distilled water. The obtained preparation of dry tagged botulisomotoxin was radioactive in the range of 1 mc/mg, while its toxicity equalled 5,000 Dlm/mg. The distribution of the labelled preparation was studied on white mice every 20, 60 and 150 minutes after an intravenous injection of 1,000 Dlm. The investigation covered: blood, brain, muscles, liver, kidneys, lungs, heart and intestines. The toxin preparation was found to rapidly find its way from the blood flow into body tissues. The highest radioactivity rate at all periods of the intoxication was recorded in the lungs, and the lowest - in the blood. During 150 minutes after intravenous administration of the tracer preparati...
RELAMPAGO (Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with ... more RELAMPAGO (Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with Adaptive Ground Observations) was an international field campaign that took place in Argentina near Sierras de Cordoba. It had an Intense Observing Period (IOP) from November 1st to December 15th of 2018 and an extended period that went until January 31st of 2019. In this paper we study Colorado State University C-band Hydrological Instrument for Volumetric Observation (CSU-CHIVO) and cross-compare it with GPM-DPR during the field campaign. CHIVO is also compared with C-band Scan Precipitation Radar 2 (CSAPR2) that is part of ARM and also was deployed during RELAMPAGO. Both radars were in the field for IOPs and the extended period.
Extended Abstract Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processe... more Extended Abstract Remote sensing of Electrification, Lightning, And Mesoscale/microscale Processes with Adaptive Ground Observations (RELAMPAGO) field campaign has been conducted in the lee of the Andes Mountains in central Argentina. The lee of the Andes Mountains in central Argentina region is known for its high impact weather and some of the intense convective systems in the world. The intense events occur in terms of large hail (and the frequency of occurrences) and extreme lightning activities. However, the observations needed for the study of the convective events are scarce; this has been addressed during the RELAMPAGO experiment by performing various ground-based and airborne measurements. The repeated storms in this region have been sampled during the RELAMPAGO field campaign to study science questions related to the deep convective initiation, severeweather generation, and various stages of storm development [1]. As part of the experimental setup for RELAMPAGO, various ins...
Este libro trata sobre el acceso a la justicia de las personas privadas de libertad a partir de u... more Este libro trata sobre el acceso a la justicia de las personas privadas de libertad a partir de una tematica en especifico, que es la aplicacion de sanciones disciplinarias al interior de los penales. La publicacion de este libro que reune una investigacion tanto de los estandares internacionales en la materia como de la situacion en Chile, ha sido posible en el marco del proyecto “Acceso a la justicia de grupos en condicion de vulnerabilidad: privados de libertad y mujeres indigenas” a cargo del Centro de Derechos Humanos de la Facultad de Derecho de la Universidad de Chile que tiene como institucion socia al Instituto Nacional de Derechos Humanos y esta patrocinado por el Instrumento Europeo para la Democracia y los Derechos Humanos.
Por uso indiscriminado de pesticidas, segun la Organizacion Mundial de la Salud, tres millones de... more Por uso indiscriminado de pesticidas, segun la Organizacion Mundial de la Salud, tres millones de personas se intoxican al ano. En Ecuador segun datos del Ministerio de Salud Publica, las intoxicaciones por plaguicidas han aumentado en los ultimos cinco anos en 24,4%. En cultivadores fruticolas de Patate- Ecuador se evaluo clinica y epidemiologicamente los niveles de la colinesterasa (ChE), que estan asociados a toxicidad de los plaguicidas organofosforados (POFs) y los factores de riesgo existentes. Se determi- no la actividad de la colinesterasa serica en 250 muestras de fruticultores que emplean pesticidas, empleando la tecnica de TECO DIAGNOSTICS (PTC) con fotometro Mindray Ba-88-A, utilizado en quimica sanguinea. Como resultados del estudio, se obtuvo el valor medio de colinesterasa serica de 5.629,25 u/l; asi mismo, el 14,4% de los muestreados presentaron valores de colinesterasa menores a 4.000 u/l y mayores a 7.000 u/l. De los valores extremos con mas de 7.000 u/l, el 64% fu...
This paper presents microphysical inference retrievals obtained from spectral polarimetry during ... more This paper presents microphysical inference retrievals obtained from spectral polarimetry during the Relampago (Remote sensing of Electrification, Lightning, And Mesoscale/Microscale Processes with...
Bulletin of the American Meteorological Society, 2021
This article provides an overview of the experimental design, execution, education and public out... more This article provides an overview of the experimental design, execution, education and public outreach, data collection, and initial scientific results from the Remote Sensing of Electrification, Lightning, and Mesoscale/Microscale Processes with Adaptive Ground Observations (RELAMPAGO) field campaign. RELAMPAGO was a major field campaign conducted in the Córdoba and Mendoza provinces in Argentina and western Rio Grande do Sul State in Brazil in 2018–19 that involved more than 200 scientists and students from the United States, Argentina, and Brazil. This campaign was motivated by the physical processes and societal impacts of deep convection that frequently initiates in this region, often along the complex terrain of the Sierras de Córdoba and Andes, and often grows rapidly upscale into dangerous storms that impact society. Observed storms during the experiment produced copious hail, intense flash flooding, extreme lightning flash rates, and other unusual lightning phenomena, but f...
Este no es un trabajo generado por la confrontacion de complejos problemas urbanos, es mas bien l... more Este no es un trabajo generado por la confrontacion de complejos problemas urbanos, es mas bien la respuesta a una responsabilidad colectiva, la cual es la de prever la adaptacion de la estructura urbana de la ciudad. Responde al derecho de construir una ciudad, caracterizada con la escala y una comunidad identificable. La conviccion de este trabajo, no es el pensar que con la sola aplicacion del plan se tiene una buena colectividad, sino mas bien, es de propender y fortalecer la creacion de un espacio y ambiente que propicie el desarrollo de ella
Two groups of autochthonous Pura Raza Galega (PRG) horses, one comprising 483 animals under a sil... more Two groups of autochthonous Pura Raza Galega (PRG) horses, one comprising 483 animals under a silvopasturing regime, and the other comprising 72 PRG horses managed in farms, were used to analyse the effect of silvopasture on infection by endoparasites. Results were considered according to the age and the sex of the horses. Faecal samples were individually collected from each animal and analysed by the coprological flotation, sedimentation and migration techniques. Coprocultures were also done to identify the main strongylid genera affecting the horses. Eggs from the gastrointestinal nematoda Parascaris equorum, strongyles and Oxyuris equi were the only endoparasites observed in the faeces of the horses. Larvae of Trichonema and Cyalocephalus spp. (small strongyles) and Strongylus and Triodontophorus (large strongyles) were identified in the coprocultures. The silvopasturing horses had the highest prevalence of the helminth parasites. The percentage of horses passing ascarid eggs was significantly higher in pasturing horses younger than 3 years. The prevalence of strongyles was statistically greater in the oldest grazing equines. Mares reached the highest prevalence of helminth egg output. Our results showed that native horses kept under silvopasture had the highest prevalence of the ascarids, strongyles and oxyurids, possibly due to their exposure to contaminated grazing areas, lack of appropriate feeding and control of their health status. We conclude that silvopasture increases the presence of infection by gastrointestinal nematoda in wild horses, especially by strongyles. Suitable measures to control parasitic diseases affecting horses in silvopasture should be considered in those systems.
El papel social del lenguaje y su repercusión en la formación de la personalidad de los adolescen... more El papel social del lenguaje y su repercusión en la formación de la personalidad de los adolescentes y jóvenes motivan la realización de estudios lingüísticos para conocer las particularidades del lenguaje que hablan determinados grupos de estos, por los que ellos representan para el desarrollo humanista de las sociedades.
Uploads
Papers by Ivan Arias