Apolinar Picado
Biographic Data
| ID | 6828734 |
|---|---|
| NAME | Apolinar Picado |
| GIVEN NAMES | Apolinar |
| FAMILY NAME | Picado |
| SIGNATURE | PICADO A |
| AFFILIATIONS | National University of Engineering |
| ORCID | 0000-0002-4138-8043 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 3 |
| WORKS AS AUTHOR | 11 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 1 |
Experimental study of the kinetics and shrinkage of ginger in convective drying (Zingiber officinale Roscoe)
In this work, the drying kinetics of ginger (Zingiber officinale Roscoe) was studied considering the shrinkage effect. The experimental data were obtained using three different temperatures (40, 60, and 80 °C). For the determination of shrinkage, two cutting orientations were employed. The volumetric and thickness shrinkage was evaluated by direct measurement. The shrinkage showed two periods during drying and had a considerable effect on the dry…
Kinetics of the reaction between Moringa oleifera leaf extracts and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical
In this study, an antioxidant-rich extract was obtained by leaching Moringa oleifera leaves. The activity of the extract against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical was measured by determining a second-order rate constant (k2). The reaction between the mixture of antioxidants in the extract and the DPPH was monitored by measuring the absorbance at 517 nm in 30-second intervals for a period of 600 s. The absorbance exhibited a ra…
Simulation of a continuous fluidised bed dryer for paddy
A model for simulating the drying of paddy (Oryza sativa L.) in a continuous fluidised bed dryer was employed. Equipment and material models were applied to describe the process. The equipment model was based on the differential equations obtained by applying mass and energy balances to each element of the dryer. In the case of the material model, mass and heat transfer rates in a single isolated particle were considered. Simulation results were …
Experimental study and mathematical modelling of convective thin-layer drying of noni (Morinda citrifolia L.)
In this study, the drying kinetics of noni (Morinda citrifolia L.) was investigated in a laboratory tunnel dryer at air temperatures of 50, 60, and 70 °C and velocities of 1.0, 1.5, and 2.0 m/s. Noni showed only a falling drying rate period. Further, a non-linear regression procedure was used to determine the characteristic drying curve. The experimental drying data of noni were employed to fit thin-layer models. Under the evaluated experimental …
Análisis bibliométrico de las publicaciones científicas nicaragüenses en la Web of Science (2015-2020)
En este estudio se analizaron las publicaciones científicas nicaragüenses en la Web of Science durante el período 2015-2020. Se recuperaron un total de 780 publicaciones distribuidas en 426 revistas. El análisis de las publicaciones evidenció un ligero crecimiento (19%) de la producción científica en el período analizado, una significativa colaboración internacional (95%) y la preferencia del inglés (74%) como idioma de publicación. El MINSA y la…
Drying kinetics and thermodynamic analysis of tomato in a tunnel dryer
In this study, drying kinetics and thermodynamic analysis of tomato were conducted in a tunnel dryer. Drying experiments were performed at three temperatures (100, 115, and 130 °C) and an air velocity of 1.45 m/s. From the drying curves, only a falling rate period was observed. Under these conditions, a characteristic drying curve was determined. It is observed that at the 40 minutes of the drying process, the outlet gas enthalpy achieved a maxim…
Simulation of a continuous fluidised bed dryer for shelled corn
In this study, a mathematical model to simulate the drying of shelled corn in a continuous plug-flow fluidised bed dryer is presented. Equipment and material models were applied to describe the process. The equipment model was based on the differential equations obtained by applying mass and energy balances to each element of the dryer. In the case of the material model, mass and heat transfer rates in a single isolated particle were considered. …
Determinación De Modelos De Secado en Capa Delgada Para La Levadura Cervecera (Saccharomyces Cerevisiae)
Modelos matemáticos del secado en capa delgada para la levadura cervecera (Saccharomyces cerevisiae) fueron estudiados y verificados con datos experimentales. Doce (12) diferentes modelos matemáticos de secado fueron comparados de acuerdo a tres parámetros estadísticos, i.e., coeficiente de correlación, error de la raíz cuadrada de la media y chi (χ2) cuadrado. La cinética de secado en capa delgada de la levadura cervecera fue experimentalmente e…
Lixiviación y secado de hojuelas de nim (Azadirachta indica) para obtener un insecticida botánico
El objetivo de este trabajo es estudiar experimentalmente la viabilidad de mejorar el procesamiento de hojuelas de nim en columnas, mediante la realización de la lixiviación del insecticida sin la remoción intermedia del solvente no-polar; y mediante la simultánea realización de ambas etapas de lixiviación. El secado de los solventes remanentes en las hojuelas de nim también se estudió experimentalmente. En la parte de lixiviación, los parámetros…
Simulation of a continuous plug-flow fluidised bed dryer for rough rice
In this study, a mathematical model to simulate the drying of rough rice in a continuous plug-flow fluidised bed dryer ispresented. Equipment and material models were applied to describe the process. The equipment model was based on thedifferential equations obtained by applying mass and energy balances to each element of the dryer. Concerning the materialmodel, mass and heat transfer rates in a single isolated particle were considered. Mass and …
La Universidad y su producción científica
El objetivo básico de la actividad de investigación es la creación de nuevo conocimiento y denuevos productos y servicios. Tradicionalmente, y en todo el mundo, esta creación de nuevoconocimiento se mide a través de los productos (outputs) y de los efectos (outcomes).DOI: http://dx.doi.org/10.5377/nexo.v27i2.1939
Determinación De Modelos De Secado en Capa Delgada Para La Levadura Cervecera (Saccharomyces Cerevisiae)
Modelos matemáticos del secado en capa delgada para la levadura cervecera (Saccharomyces cerevisiae) fueron estudiados y verificados con datos experimentales. Doce (12) diferentes modelos matemáticos de secado fueron comparados de acuerdo a tres parámetros estadísticos, i.e., coeficiente de correlación, error de la raíz cuadrada de la media y chi (χ2) cuadrado. La cinética de secado en capa delgada de la levadura cervecera fue experimentalmente e…
Simulation of a continuous fluidised bed dryer for shelled corn
In this study, a mathematical model to simulate the drying of shelled corn in a continuous plug-flow fluidised bed dryer is presented. Equipment and material models were applied to describe the process. The equipment model was based on the differential equations obtained by applying mass and energy balances to each element of the dryer. In the case of the material model, mass and heat transfer rates in a single isolated particle were considered. …
Simulation of a continuous plug-flow fluidised bed dryer for rough rice
In this study, a mathematical model to simulate the drying of rough rice in a continuous plug-flow fluidised bed dryer ispresented. Equipment and material models were applied to describe the process. The equipment model was based on thedifferential equations obtained by applying mass and energy balances to each element of the dryer. Concerning the materialmodel, mass and heat transfer rates in a single isolated particle were considered. Mass and …
La Universidad y su producción científica
El objetivo básico de la actividad de investigación es la creación de nuevo conocimiento y denuevos productos y servicios. Tradicionalmente, y en todo el mundo, esta creación de nuevoconocimiento se mide a través de los productos (outputs) y de los efectos (outcomes).DOI: http://dx.doi.org/10.5377/nexo.v27i2.1939
Lixiviación y secado de hojuelas de nim (Azadirachta indica) para obtener un insecticida botánico
El objetivo de este trabajo es estudiar experimentalmente la viabilidad de mejorar el procesamiento de hojuelas de nim en columnas, mediante la realización de la lixiviación del insecticida sin la remoción intermedia del solvente no-polar; y mediante la simultánea realización de ambas etapas de lixiviación. El secado de los solventes remanentes en las hojuelas de nim también se estudió experimentalmente. En la parte de lixiviación, los parámetros…
Determinación De Modelos De Secado en Capa Delgada Para La Levadura Cervecera (Saccharomyces Cerevisiae)
Modelos matemáticos del secado en capa delgada para la levadura cervecera (Saccharomyces cerevisiae) fueron estudiados y verificados con datos experimentales. Doce (12) diferentes modelos matemáticos de secado fueron comparados de acuerdo a tres parámetros estadísticos, i.e., coeficiente de correlación, error de la raíz cuadrada de la media y chi (χ2) cuadrado. La cinética de secado en capa delgada de la levadura cervecera fue experimentalmente e…
Análisis bibliométrico de las publicaciones científicas nicaragüenses en la Web of Science (2015-2020)
En este estudio se analizaron las publicaciones científicas nicaragüenses en la Web of Science durante el período 2015-2020. Se recuperaron un total de 780 publicaciones distribuidas en 426 revistas. El análisis de las publicaciones evidenció un ligero crecimiento (19%) de la producción científica en el período analizado, una significativa colaboración internacional (95%) y la preferencia del inglés (74%) como idioma de publicación. El MINSA y la…
Drying kinetics and thermodynamic analysis of tomato in a tunnel dryer
In this study, drying kinetics and thermodynamic analysis of tomato were conducted in a tunnel dryer. Drying experiments were performed at three temperatures (100, 115, and 130 °C) and an air velocity of 1.45 m/s. From the drying curves, only a falling rate period was observed. Under these conditions, a characteristic drying curve was determined. It is observed that at the 40 minutes of the drying process, the outlet gas enthalpy achieved a maxim…
Simulation of a continuous fluidised bed dryer for shelled corn
In this study, a mathematical model to simulate the drying of shelled corn in a continuous plug-flow fluidised bed dryer is presented. Equipment and material models were applied to describe the process. The equipment model was based on the differential equations obtained by applying mass and energy balances to each element of the dryer. In the case of the material model, mass and heat transfer rates in a single isolated particle were considered. …
Experimental study of the kinetics and shrinkage of ginger in convective drying (Zingiber officinale Roscoe)
In this work, the drying kinetics of ginger (Zingiber officinale Roscoe) was studied considering the shrinkage effect. The experimental data were obtained using three different temperatures (40, 60, and 80 °C). For the determination of shrinkage, two cutting orientations were employed. The volumetric and thickness shrinkage was evaluated by direct measurement. The shrinkage showed two periods during drying and had a considerable effect on the dry…
Kinetics of the reaction between Moringa oleifera leaf extracts and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical
In this study, an antioxidant-rich extract was obtained by leaching Moringa oleifera leaves. The activity of the extract against the 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical was measured by determining a second-order rate constant (k2). The reaction between the mixture of antioxidants in the extract and the DPPH was monitored by measuring the absorbance at 517 nm in 30-second intervals for a period of 600 s. The absorbance exhibited a ra…
Simulation of a continuous fluidised bed dryer for paddy
A model for simulating the drying of paddy (Oryza sativa L.) in a continuous fluidised bed dryer was employed. Equipment and material models were applied to describe the process. The equipment model was based on the differential equations obtained by applying mass and energy balances to each element of the dryer. In the case of the material model, mass and heat transfer rates in a single isolated particle were considered. Simulation results were …
Experimental study and mathematical modelling of convective thin-layer drying of noni (Morinda citrifolia L.)
In this study, the drying kinetics of noni (Morinda citrifolia L.) was investigated in a laboratory tunnel dryer at air temperatures of 50, 60, and 70 °C and velocities of 1.0, 1.5, and 2.0 m/s. Noni showed only a falling drying rate period. Further, a non-linear regression procedure was used to determine the characteristic drying curve. The experimental drying data of noni were employed to fit thin-layer models. Under the evaluated experimental …
Physics (8 works) · Food Drying and Modeling (7 works) · Materials Science (6 works) · Chemistry (4 works) · Engineering (4 works) · Thermodynamics (4 works) · Art (3 works) · Composite material (3 works) · Computer Science (3 works) · Discrete element method (3 works)