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secar process » secular process (Expander búsqueda), care process (Expander búsqueda), per process (Expander búsqueda)
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secar process » secular process (Expander búsqueda), care process (Expander búsqueda), per process (Expander búsqueda)
para secar » para secado (Expander búsqueda), para sector (Expander búsqueda), para ser (Expander búsqueda)
1
artículo
Publicado 2008
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In the drying process of activated clay there are two important methods that can be used to dry this activated clay: Rotator continuous drying and drying atomization. But to determine the characteristics and mechanism which intervene in the drying of clay is fundamental to use a batch tray drying. The objective of the present work is obtain the curve of drying velocity, fixing sorne initial conditions of humidity, and to define the mechanisms involved in the drying of activated clay with sulphuric acid. Further, this information will be used to scale to continuous drying and find out the equations which govern this process. It was necessary to use a tray of 214 cm2 surface area to charge moist bentonite. Samples were taken containing between 48 and 138 g, and initial humidity between 38 and 50%; to achieve a.final humidity of between about 8 and 13%. Graph of clay total mass (MT) versus ...
2
tesis de grado
Uso de consideraciones científicas para predicción dimensional de máquina secadora de abono orgánico
Publicado 2016
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In this research it is to select and find the main dimensions of a dryer for organic fertilizer, produced by the company BIOFERT SAC, from a Lagrangian perspective developed in previous studies, which combine heat transfer and mass movement of a individual particle through the dryer. In the first part of the study, a selection process dryer develops, if it is true not only a dryer is right, will choose whichever is more suitable for the type of material to be dried, then a thermodynamic analysis develops dryer to obtain a mass flow and air properties required for drying certain amount of moist product. an algorithm that associates the physical properties of the material with the mass transfer and heat, and has as output the main dimensions of drier (such as diameter and length) is then established. the EES (Engineering Equations Solver) software is a tool widely used in the area of therm...
3
tesis doctoral
Publicado 2021
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En la presente tesis presentamos el estudio, la síntesis, fabricación y extracción de materiales orgánicos alternativos para ser utilizados en la industria de la fabricación de electrodos conductores flexibles transparentes, materiales fotoluminiscentes con la capacidad para formar nanoporos y pigmentos naturales cuyas propiedades químicas pueden ser aprovechados en un dispositivo orgánico emisor de luz. Es así que mediante la reducción del óxido de grafeno soportado sobre polietileno tereftalato (PET) a través de la técnica de recubrimiento por centrifugación, el cual, fue procesado en solución de vapor de yoduro de hidrógeno, se obtuvo electrodos flexibles y transparentes con una buena conductividad eléctrica, debido a las hojas de grafeno químicamente modificadas y adheridas sobre el sustrato soporte, y debido a la versatilidad de este material carbonoso se estudió s...
4
tesis de grado
Publicado 2005
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In the present work of investigation a system of control and acquisition of experimental data is presented, that operates through a microcontroller that allows to fix the temperature of operation in the drying chamber. With the equipment installed and the appropriate instrumentation, the macroscopic parameters for the drying of solids were fixed, such as the speed, temperature and relative humidity of the air or process flow that influence the drying time, producing its variation or change in the humidity of the product. to dry. The characteristic drying curves for the potato were obtained; the free humidity vs time and speed of drying vs free humidity and from the latter the experimental values were taken to determine the heat and mass transfer coefficients, as well as the diffusivities for both the constant and variable periods. The selection of the control variables was made: the inpu...
5
tesis de grado
Publicado 2020
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This work presents the Improvement Study to switch the energy source of a factory producing lime oil and dried lime peel in Northern Peru. The design of the LPG system considered the technical characteristics and requirements for the consumption equipment and its distance towards the storage area in accordance with Peruvian Technical Standards NTP 321.123 and NTP 321.121 (NTP, for its Spanish acronym), and other international standards including NFPA 58, CE and ASME. This study confirmed that the client’s plant layout in the lime oil production line could be optimized by relocating the steam boilers to a different area. The storage system ensures a fuel stock that allows for autonomy to respond to any shortages due to an undersupply of LPG or strikes that may interrupt access to LPG units. The forced vaporization system was designed to ensure a constant pressure and flow during periods...
6
artículo
Publicado 2022
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Fishmeal concentrates a high percentage of protein and its monetary cost is relatively high, searching for possible alternatives in macroalgae for improvement purposes is an option. Color is a fundamental characteristic of food, however, drying by the Infrared method as an emerging technology for the study of the macroalga Lessonia trabeculata is little studied. For this reason, the degradation and change of color in the drying process by infrared rays (IR) at different temperatures 40°C, 55°C and 70°C were objectively characterized with the color space scale (CIE-L*a *b*), through the use of a spectrophotometer. Drying was carried out with infrared rays in an infrared radiant heating chamber with a power of 4.5kW, 20.5 Amps. The results indicate that the best color treatment determined was for the macroalga Lessonia trabeculata at a temperature of 40°C with values for: L*= 44....
7
artículo
Publicado 2022
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Fishmeal concentrates a high percentage of protein and its monetary cost is relatively high, searching for possible alternatives in macroalgae for improvement purposes is an option. Color is a fundamental characteristic of food, however, drying by the Infrared method as an emerging technology for the study of the macroalga Lessonia trabeculata is little studied. For this reason, the degradation and change of color in the drying process by infrared rays (IR) at different temperatures 40°C, 55°C and 70°C were objectively characterized with the color space scale (CIE-L*a *b*), through the use of a spectrophotometer. Drying was carried out with infrared rays in an infrared radiant heating chamber with a power of 4.5kW, 20.5 Amps. The results indicate that the best color treatment determined was for the macroalga Lessonia trabeculata at a temperature of 40°C with values for: L*= 44....
8
tesis de grado
Publicado 2024
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In the present investigation, the drying kinetics of Bixa orellana L (achiote) were evaluated using two mathematical models, the B.E.T model (Brunauer, Emmet and Teller) and the G.A.B model (Guggenheim, Anderson and De Boer) in a dryer. of trays by forced convection at temperatures of 50 °C, 60 °C and 70 °C, maintaining constant the thickness of the bed to be dried, which is 5 mm and the air speed, which is 5 m/s. During the drying process, the critical humidities were determined, which decreased from 2.594 kg/kg s.s to 2.360kg/kg s.s. This same behavior is also presented by the equilibrium humidity, which has 0.127 kg/kg s.s. It decreases to 0.097 kg/kg s.s., showing a dependence on the drying temperature, likewise the drying speed increased from 1,564 kg/h m2 at a temperature of 50 °C to 2,181 kg/h m2 for the temperature of 70 °C indicating a greater mass transfer due to direct in...
9
artículo
Publicado 2008
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En el proceso de secado de la arcilla activada, existen dos métodos importantes que se pueden usar para secar arcillas activadas: Secador Rotatorio Continuo [1] y Secador por Atomización (6). Pero para determinar las características y mecanismos que intervienen en el secado de la arcilla es fundamental utilizar un secador de bandeja por lote. El objetivo del presente trabajo es obtener la curva de velocidad de secado, fijando ciertas condiciones iniciales de humedad, y definir los mecanismos que intervienen en el secado de las arcillas activadas con ácido sulfúrico, permitiendo utilizar esta información en los procesos de secado continuo, así como encontrar las ecuaciones que gobiernan los diferentes mecanismos de secado. Se utilizó una bandeja de área superficial de 214 cm2 en la cual se carga la bentonita húmeda, las muestras tomadas fueron de 48 a 138 g aprox. y 38 a 50% de ...
10
artículo
Publicado 2025
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Introduction: The appearance of diabetic foot is common but preventable. Self-care is a strategy to achieve this. Objective: To know the foot self-care practices reported by people with type 2 diabetes mellitus from a qualitative approach. Methods: Qualitative descriptive study. 12 people participated, selected by thematic saturation and redundancy and convenience sampling. Data collection was carried out between April and May 2023, through a semi-structured interview. Data processing was through thematic content analysis. Results: No glycosylated hemoglobin was found in the medical records and the center does not have a diabetic foot unit. In the analysis, four categories were found: a) Habits in examination, hygiene, nail trimming, drying and moisturizing the feet, b) Choice of footwear, c) Use of traditional medicine, d) Self-learning and need for education sanitary for self-care of t...
11
tesis de grado
Publicado 2017
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El presente trabajo fue realizado en los ambientes de la planta de Conservas de Palmito y los Laboratorios de Análisis físico - químico de Alimentos de la Facultad de Industrias Alimentarias - UNAP. El equipo empleado para secar las muestras fue un horno secador de lecho fluidizado con una temperatura de funcionamiento de 40 °C a 120 °C, también se utilizó un Anemómetro para medir la velocidad de aire circulante y un termohigrómetro para medir la temperatura y humedad relativa en el interior del horno y así asegurarnos que estas no varíen y se mantengan constantes durante las pruebas, estos equipos se utilizaron durante todo el tiempo de duración de la presente investigación. La materia prima a emplear es proveniente de las comunidades de la provincia de Mariscal Ramon Castilla (Caballo cocha), teniendo como objetivo principal del presente trabajo de investigación realizar ...
12
tesis de grado
Publicado 2024
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Determinar la actividad gastroprotectora del extracto hidroalcohólico de las hojas de Juglans neotropica Diels “Nogal Peruano”. El estudio se realizó mediante un enfoque aplicado, experimental, en el que se estudió la especie vegetal Juglans neotropica Diels, que fue recolectada en el anexo de Santa Rosa de Acora distrito de Sangayaico, Provincia de Huancavelica, departamento de Huancavelica en el mes de enero 2023, luego del proceso esta fue seleccionada para separar las hojas que pusieran presentar insectos o indicios de enfermedades. Se procedió a lavarlas con agua destilada y luego se dejó secar bajo la sombra, tras lo cual se realizó el proceso de secado y molienda. La investigación se realizó en mediante un estudio en animales de experimentación, en el cual se indujo ulceras gástricas por etanol, el cual se trató con el extracto hidroalcohólico de Juglans neotropica...
13
tesis de grado
Publicado 2017
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Considering the bibliographical information, in which it is mentioned that the printing negatives have deposited silver salt in colloidal form, it was proposed, and it was decided to execute an experimental project, consisting of recovering silver contained in the radiographic plates following 3 Comparative methods, and see which methodology has the highest extraction, evaluated and compared. In the first method, the silver salts of the plates were attacked with an aqueous solution of sodium hydroxide, allowed to react, and then neutralized with a solution of hydrochloric acid, forming silver chloride which separated. In the second method, the silver salts of the plates were attacked with sodium hypochlorite (commercial bleach), where they were allowed to react and the silver salts were converted to silver chloride which precipitated and separated. In the third method, the plates were at...
14
tesis de grado
Publicado 2017
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Objetivo: Determinar la colonización bacteriana en los conos de papel utilizados por los estudiantes de estomatología de la Universidad Privada Antenor Orrego en sus terapias endodónticas en el año 2016. Materiales y Método: Se realizó un estudio prospectivo, transversal, descriptivo y observacional. Se evaluaron 290 muestras de conos de papel recolectados de un total de 145 estudiantes de estomatología durante la realización de sus terapias endodónticas en las asignaturas de endodoncia I, endodoncia II, clínica integral I, clínica integral II e internado estomatológico. Se solicitó a los estudiantes, nos permitiera escoger al azar 2 conos de papel, los cuáles fueron recolectados en el momento que el estudiante los utilizaría para secar sus conductos radiculares en su tratamiento endodóntico. Dichos conos fueron colocados en tubos de ensayo que contenían caldo tioglicola...
