Listar por autor "Cejas, Ezequiel"
Mostrando ítems 1-20 de 25
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Ambient Species Density and Gas Temperature Radial Profiles Derived from a Schlieren Technique in a Low Frequency Non-thermal Oxygen Plasma Jet.
Chamorro, Juan Camilo; Prevosto, Leandro; Cejas, Ezequiel; Kelly, Héctor; Mancinelli, Beatriz; Fischfeld, Gerardo (2017)A quantitative interpretation of the schlieren technique applied to a non-thermal atmospheric-pressure oxygen plasma jet driven at low-frequency (50 Hz) is reported. The jet was operated in the turbulent regime with a ... -
Cathode-sheath model for field emission sustained atmospheric pressure discharges
Cejas, Ezequiel; Prevosto, Leandro; Minotti, Fernando; Ferreyra, Matías; Chamorro, Juan Camilo; Fina, Brenda (2021)The cathode-sheath region of a discharge in atmospheric pressure air with a flat copper cathode is numerically investigated by using a simple fluid model that takes into account non-local ionization. The effects of the ... -
Cathode-sheath model for field emission sustained atmospheric pressure discharges.
Cejas, Ezequiel; Prevosto, Leandro; Minotti, Fernando Oscar; Ferreyra, Matías; Chamorro, Juan Camilo (2021-03-16)The cathode-sheath region of a discharge in atmospheric pressure air with a flat copper cathode is numerically investigated by using a simple fluid model that takes into account non-local ionization. The effects of the ... -
Desarrollo de una diagnóstica refractiva para el estudio de plasmas no-térmicos de alta presión.
Cejas, Ezequiel (UTN FRVT, 2017-03-09)Este Proyecto Final consiste en la interpretación cuantitativa de la técnica Schlieren aplicada a un jet de plasma no térmico, cuasi-estacionario (50 Hz), y a presión atmosférica. El jet fue operado en régimen turbulento ... -
Detección temprana de fractura de hueso escafoides en carpo.
Biana, María Julieta; Peperno Venessio, Soledad; Reniero, Betiana (UTN FRVT, 2023-09-11)Se reportan los métodos diagnósticos con mayor especificidad para el diagnóstico de una fractura de escafoides, los cuales permitan la evaluación de fracturas inadvertidas tales que puedan ocasionar futuras complicaciones. ... -
Effect of in–package cold plasma treatments on the quality of minimally processed apples.
Denoya, Gabriela Inés; Polenta, Gustavo Alberto; Apóstolo, Nancy Mariel; Cejas, Ezequiel; Fina, Brenda; Chamorro, Juan Camilo; Ferreyra, Matías; Prevosto, Leandro; Vaudagna, Sergio; 0000-0001-7430-6684 (2023)Cold plasma technology is being increasingly used for food preservation and, incipiently, for minimal processing of fruit. Therefore, the objective of this work was to study the effect of in-package cold plasma (generated ... -
Effects of non-thermal plasma technology on Diaporthe longicolla cultures and mechanisms involved.
Pérez Pizá, María Cecilia; Grijalba, Pablo Enrique; Cejas, Ezequiel; Chamorro, Juan Camilo; Ferreyra, Matías; Zilli, Carla; Vallecorsa, Pablo; Yannarelli, Gustavo; Prevosto, Leandro; Balestrasse, Karina; Santa Cruz, Diego (2021-01-05)BACKGROUND: The Diaporthe/Phomopsis complex (D/P) is a group of soybean seed-borne fungi. The use of chemical fungicides, either for seed treatment or during the crop cycle, is the most adopted practice for treating fungal ... -
Effects of non–thermal plasmas on seed-borne Diaporthe/Phomopsis complex and germination parameters of soybean seeds.
Pérez Pizá, María Cecilia; Prevosto, Leandro; Zilli, Carla; Cejas, Ezequiel; Kelly, Héctor; Balestrasse, Karina (2018)Diaporthe/Phomopsis (D/P) is a complex of seed-borne fungi that severely affects soybean (Glycine max (L.) Merrill), one of the most important crops worldwide. Non-thermal plasma treatment is a fast, economic and ... -
Effects of the Plasma-Activated Water on the Quality and Preservation of Fresh-Cut Lettuce.
Chamorro, Juan Camilo; Denoya, Gabriela Inés; Santamaría, Brenda; Fina, Brenda; Ferreyra, Matías; Cejas, Ezequiel; Rodriguez, Anabel; Vaudagna, Sergio; Prevosto, Leandro (2023)— The effect of the application of plasma-activated water (PAW) on the quality and preservation of fresh-cut lettuce is reported in this article. PAW was produced by using a liquid cathode air discharge. The average ... -
Enhancement of soybean nodulation by seed treatment with non–thermal plasmas
Pérez Pizá, María Cecilia; Cejas, Ezequiel; Zilli, Carla; Prevosto, Leandro; Mancinelli, Beatriz; Santa Cruz, Diego; Yannarelli, Gustavo; Balestrasse, Karina (2020-03-18)Soybean (Glycine max (L.) Merrill) is one of the most important crops worldwide providing dietary protein and vegetable oil. Most of the nitrogen required by the crop is supplied through biological N2 fxation. Non-thermal ... -
Factores predisponentes relacionados con hábitos de vida en el diagnóstico de osteoporosis en mujeres adultas de la región de Arias (Cba).
Coello, Jésica Mariel; Stolle, Fátima (UTN FRVT, 2022-12)Las fracturas osteoporóticas son un importante problema de salud mundial, convirtiéndose en una importante carga económica y social. Se determinó la densidad mineral ósea (DMO) a nivel de cadera y columna lumbar aplicando ... -
Glow Discharge in a High-Velocity Air Flow: The Role of the Associative Ionization Reactions Involving Excited Atoms.
Cejas, Ezequiel; Mancinelli, Beatriz; Prevosto, Leandro (2019)A kinetic scheme for non-equilibrium regimes of atmospheric pressure air discharges is developed. A distinctive feature of this model is that it includes associative ionization with the participation of N(2D, 2P) atoms. ... -
Improvement of growth and yield of soybean plants through the application of non-thermal plasmas to seeds with different health status.
Pérez Pizá, María; Prevosto, Leandro; Grijalba, Pablo; Zilli, Carla; Cejas, Ezequiel; Mancinelli, Beatriz; Balestrasse, Karina (2019)Soybean (Glycine max (L.) Merrill) is a globally important crop, providing oil and protein. Diaporthe/Phomopsis complex includes seed-borne pathogens that affect this legume. Non-thermal plasma treatment is a fast, ... -
Métodos complementarios para la detección precoz del cáncer de mama.
González, María Eugenia; Faraone Berlingeri, Amorina (UTN FRVT, 2022-11-04)El cáncer de mama es un problema de alta relevancia en la salud de las mujeres argentinas dado que representa la primera causa de muerte por tumores. El diagnóstico temprano de la patología empleando métodos complementarios ... -
Modelling of an Atmospheric–Pressure Air Glow Discharge Operating in High–Gas Temperature Regimes: The Role of the Associative Ionization Reactions Involving Excited Atoms.
Cejas, Ezequiel; Prevosto, Leandro; Mancinelli, Beatriz (2020)A model of a stationary glow-type discharge in atmospheric-pressure air operated in high-gas-temperature regimes (1000 K < Tg < 6000 K), with a focus on the role of associative ionization reactions involving N(2D,2P)-excited ... -
Non-thermal plasma application improves germination, establishment and productivity of Gatton panic grass (Megathyrsus maximus) without compromising forage quality.
Pérez Pizá, María Cecilia; Clausen, Liliana; Cejas, Ezequiel; Ferreyra, Matías; Chamorro, Juan Camilo; Fina, Brenda; Zilli, Carla; Vallecorsa, Pablo; Prevosto, Leandro; Balestrasse, Karina (2022)Megathyrsus maximus (Gatton panic) is a tropical grass highly valued both for its use as forage and for its biofuel potential. A major constraint in establishing pastures of this cultivar is the low viability and germination ... -
Non-thermal plasma as emerging technology for Tribolium castaneum pest-management in stored grains and flours.
Zilli, Carla; Pedrini, Nicolás; Prieto, Eduardo; Girotti, Juan Roberto; Vallecorsa, Pablo; Ferreyra, Matías; Chamorro, Juan Camilo; Cejas, Ezequiel; Fina, Brenda; Prevosto, Leandro; Balestrasse, Karina (2022)The red flour beetle, Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), is a major secondary pest on wheat stored in metal bins, silo-bags and is also frequently found in wheat products such as flour. Non-thermal ... -
Non‑Thermal Plasmas Afect Plant Growth and DNA Methylation Patterns in Glycine max.
Pérez Pizá, María Cecilia; Ibañez, Verónica; Varela, Anabella; Ferreyra, Matías; Chamorro, Juan Camilo; Zilli, Carla; Vallecorsa, Pablo; Fina, Brenda; Prevosto, Leandro; Marfil, Carlos; Cejas, Ezequiel; Balestrasse, Karina (2021)Non-thermal plasmas (NTP) are partially ionized gases that represent a promising technology for seed treatment to enhance seed health while promoting germination and vigor in a fast, cost-efective, and eco-friendly way. ... -
Numerical Simulation of the Voltage–Current Characteristic of an Atmospheric Pressure Discharge: The Glow‑to‑Arc Transition.
Cejas, Ezequiel; Prevosto, Leandro; Minotti, Fernando (2024)The glow-to-arc transition of a convection-stabilized atmospheric pressure air discharge is numerically investigated. Two separate models are considered: a one-dimensional axisym metric time-dependent fuid model of the ... -
On the dynamic behavior of the anode–arc–root at the nozzle surface in a non-transferred plasma torch
Prevosto, Leandro; Risso, Marcelo Natalio; Infante, Damián Leandro; Cejas, Ezequiel; Kelly, Héctor; Mancinelli, Beatriz (2012)The dynamic behavior of the anode–arc–root at the nozzle surface of a plasma torch was experimentally investigated in this work. A gas (N2) vortex–stabilized non–transferred arc torch with a thoriated tungsten rod (2wt ...