Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
thermal processing » mineral processing (Expander búsqueda)
pre processing » word processing (Expander búsqueda), _ processing (Expander búsqueda), a processing (Expander búsqueda)
thermal processing » mineral processing (Expander búsqueda)
pre processing » word processing (Expander búsqueda), _ processing (Expander búsqueda), a processing (Expander búsqueda)
1
tesis de grado
Publicado 2020
Enlace
Enlace
This Project includes the design, preliminary calculations that determine the characteristics of the use of solar concentrators; construction, wich includes the manufacture of solar equipment and its structural parts; and implementation of the project with its results, wich will be specifically analyzed in this work. All this with the aim of generating hot water to reduce the consumption of fossil fuels for an industrial customer, wich has a process where the essential oil of lemon is obtained by consuming a large amount of steam power trough an industrial boiler. The final results of the project will demonstrate the great benefits of using solar energy for industrial processes, setting a precedent for future clients, who must migrate to these new solutions in this new era of industry 4.0 to be more efficient, more sustainable and more competitive in a worl that moves faster every year.
2
tesis de grado
Climate change significantly impacts the lifestyle of people living in high Andean areas. For children, heat, combined with other environmental factors like humidity, leads to exhaustion — something experienced daily. Prolonged exposure to heat can cause side effects such as anxiety, and depression, and contribute to mass migrations and regional conflicts, affecting local communities. Given these concerns, this research focuses on the thermal comfort of all types of buildings, whether residential or public. It proposes the importance of controlling internal temperatures, much like green walls or building placement systems that allow air to flow freely, creating cool chambers with stable temperatures for a greater sense of comfort. To achieve this, a system of modular architectural membranes was designed and prototyped. These membranes are tailored to the specific needs of the geographi...
3
artículo
Publicado 2025
Enlace
Enlace
Objective: To determine in vitro microleakage in lithium disilicate veneers cemented with resin cement and thermally modified resin. Materials and methods: An in vitro study was conducted using 20 maxillary premolars, on which lithium disilicate veneers were cemented. The specimens were divided into two groups of ten samples each. Each tooth was prepared on the vestibular surface for subsequent veneer fabrication. In Group 1, veneers were cemented with resin cement (Nexus-3), whereas in Group 2, thermally modified resin (Herculite Précis™) was used. Subsequently, the teeth underwent a thermocycling process and were immersed in a 2% methylene blue solution for five days, after which sagittal sections were performed for observation under an optical microscope. Results: A higher percentage of microleakage was observed in the group cemented with resin cement (47.5%; n = 19) compared to th...
4
artículo
Publicado 2024
Enlace
Enlace
The objective of this applied experimental research was to evaluate the microbial stabilization of pre-sonicated fresh milk by low temperature thermal treatment (≤60 °C), to reduce its perishability. Fresh milk was sonicated with an energy density of 0.5 kJ/mL before being thermally treated at low temperature (40 to 60 °C) for different times; The pre-sonicated and thermally treated milk was evaluated for its content of Total Mesophilic Aerobes (AMV) and Total Coliforms (TC), and the effect of the treatment on microbial populations was modeled using the Bigelow Model. It was determined that treatments between 40 and 45 °C generated population increases; but those treatments above 55.04 °C for AMV and 49.28 °C for CT initiated microbial inactivation processes, both temperatures being the lowest inactivation temperatures reported so far for fresh milk. The increase in thermal sensit...
5
tesis de grado
Publicado 2022
Enlace
Enlace
La presente investigación ha sido desarrollada como respuesta a una problemática por la que pasa la empresa Thermal Engineering S.A.C., la cual limita el desempeño de su proceso de gestión de incidencias, debido a que este proceso se desarrolla de forma manual. Al lograr una mejora en el registro de las incidencias dentro de la empresa, se obtuvieron mejoras en la toma de decisiones, evitando la perdida de horas hombre, por las consultas instantáneas de algún dato o cualquier otra información, siendo de gran rentabilidad para la empresa. Para este fin, la investigación fue ejecutada bajo un enfoque cuantitativo y siguiendo las pautas de un diseño pre experimental, en el que se diseñó un sistema web bajo la Metodología RUP, utilizando el Lenguaje PHP y una base de datos en MySQL para su construcción. La muestra de estudio estuvo conformada por 12 colaboradores de la empresa. ...
6
tesis de grado
Publicado 2020
Enlace
Enlace
El objetivo principal del presente trabajo es verificar la viabilidad de la implementación de una planta procesadora de puré embolsado de papa amarilla con harina pre cocida de granos andinos como la quinua, cañihua y kiwicha para consumo masivo; evaluando la existencia de una demanda, de disponibilidad de tecnológica adecuada y materia prima. Se realizó una encuesta, donde se determinó que el mercado objetivo son las familias de Lima metropolitana de los NSE A, B y C. Para llegar a esté mercado se identificaron dos principales canales, supermercados y mercados (canal moderno y tradicional). Se llegará al segundo a través de mayoristas. En cuanto al producto, contará con una presentación en bolsas de doypack de 250 g, el cual contará con un precio a cliente final de S/. 6,00. Se contará con una planta de 414,74 m2 y una producción de 251 206 bolsas al año, la cuál estará...
7
tesis de grado
8
tesis de maestría
Publicado 2021
Enlace
Enlace
El trabajo realizado tiene como objetivo calibrar en potencia térmica el núcleo del reactor nuclear peruano RP-10 mediante la técnica de ruido neutrónico, que utiliza la estimación de parámetros cinéticos hallados experimentalmente. El desarrollo de esta actividad se llevó a cabo durante el plan de arranque de la puesta en servicio del nuevo núcleo del RP-10. Para ello, se utilizaron dos cámaras de ionización compensadas (CIC) en posiciones estratégicas dentro del reactor, con la finalidad de obtener en cada una de las CIC, la intensidad de corriente que genera la detección de neutrones. Las mediciones se realizaron en dos grupos diferentes llamados PRE-PES y PES, donde el primer grupo se llevó a cabo con la finalidad de encontrar características asociadas entre la estimación de la potencia térmica y el flujo neutrónico térmico en la posición de la CIC. Mientras que e...
9
artículo
Publicado 2019
Enlace
Enlace
The Pashul is a fruit with the nutritional potential to strengthen human health, the technological impulse is to achieve pleasant products of easy acceptance. In the methodological contributions we have: The theory that contributes with the nutritional benefits through culinary preparations such as: soups, stew, drink, punch, mashed milk, confit, fried chips, cakes, pies, breads, cookies and others. We appreciate the consumption of Pashul as a food alternative. Our objective is "To promote the valuation and use of pashul, taking advantage of its bioactive components and applying technology for human consumption". The method was applied to eliminate the anti nutrients through the process of steam cooking or under thermal pressure and the process for the production of precooked flour. These precooked products can be used in any culinary recipe. To determine the acceptability of the product...
10
artículo
Two types of industrial hypereutectic Fe-C-Si alloys, with carbon saturation index as a measure of their eutecticity, SC = 1.11 and SC = 1.18, show “anomalous” behavior during their solidification processes for 3 out of 5 alloys. In order to determine their cause, behavior of their liquid cooling before solidification is analyzed through their parameters: thermal history [T-t], cooling rate [(dT/dt)L-t] and loss of heat content rate [(dQ/dt)L-t]. Simultaneous evaluation of them let us associate to the metallurgical concept of Liquid Metal Constitution (LMC) as the cause for such “anomalous” behavior, due to LMC affects the formation of phases during solidification for any type of alloys. Unetched macrostructures around thermocouple placement for the five alloys specimens solidified at cooling rates in the range of 6-8 ºC/s in precooked sand molds, demonstrate all of them are gra...
11
artículo
Two types of industrial hypereutectic Fe-C-Si alloys, with carbon saturation index as a measure of their eutecticity, SC = 1.11 and SC = 1.18, show “anomalous” behavior during their solidification processes for 3 out of 5 alloys. In order to determine their cause, behavior of their liquid cooling before solidification is analyzed through their parameters: thermal history [T-t], cooling rate [(dT/dt)L-t] and loss of heat content rate [(dQ/dt)L-t]. Simultaneous evaluation of them let us associate to the metallurgical concept of Liquid Metal Constitution (LMC) as the cause for such “anomalous” behavior, due to LMC affects the formation of phases during solidification for any type of alloys. Unetched macrostructures around thermocouple placement for the five alloys specimens solidified at cooling rates in the range of 6-8 ºC/s in precooked sand molds, demonstrate all of them are gra...
12
objeto de conferencia
Publicado 2022
Enlace
Enlace
The energy assessment carried out in a middle-sized CSP parabolic field of 120 m2 is presented; it provides pre-heating water at 70°C to the boilers of the lemon essential oil extraction process in an agro-industrial company located in Piura, at the border of Sechura desert in Peru. The parabolic cylindrical solar concentrators are made with glass reflectors, an automatic solar tracking system, and collector tubes through which water flows. It was measured that each collector converts solar energy and transfer it as a thermal energy to the water with an average efficiency of 18.1%. Considering this result, theoretically the whole solar field could provide 550.37 GJ/year for water preheating, which is equivalent to saving 28151.8 liters of LPG, and 46.87 tons of CO2 released to the environment. However, after a year of operation, the solar field provided only 99.59 GJ for water preheatin...
13
Publicado 2024
Enlace
Enlace
Las intervenciones de enfermería en el perioperatorio pueden ayudar a prevenir y tratar posibles complicaciones relacionadas al proceso de atención de salud en el paciente quirúrgico tales como la hipotermia perioperatoria. Objetivo: Determinar las medidas para la prevención de la hipotermia en el paciente perioperatorio. Metodología: revisión bibliográfica, se realizó con publicaciones no mayores a los 5 años referentes a la hipotermia perioperatoria, incluyendo aquellos que tenían como tema central hipotermia perioperatoria y atención por enfermería. .Resultados: Se identificaron 90 publicaciones, de las cuales 30 estudios que cumplieron los criterios de inclusión desde el año 2018 a la actualidad, la mayor parte de publicaciones fueron recopiladas de Pubmed, Estados Unidos fue el país que registró mayores artículos referidas al tema, y mayormente se encontraron trabaj...
14
tesis de grado
Publicado 2003
Enlace
Enlace
factor involved in controlled muscle of shrimp drying permits process optimisation and assists in design of suitable dryers. The study undertook two stages: first a thermal pre-treatment submerging the whole shrimp in water at 90ºC for 90 seconds, were the orange colour and textura was improved. Was used then the sample underwent osmotic dehydration in ternary solution of 20% suerosa and 20%of NaCI ( % weight) under agitation at 120 rpm for 30 minutes to temperatura of 20ºC. The second stage was the drying where the experimental curves were obtained in laboratory dryer under different drying conditions from 40, 50 and 60ºC , and air velocity from 0.5, 0.8 and 1.1 m/s. during this whole process the time of drying was controlled at regular time in someway, the loss weight produced by the evaporation of water contained in the muscle was controlled. With this parameter the product was obt...
15
tesis de grado
Publicado 2024
Enlace
Enlace
Actualmente existen empresas o firmas que se especializan en formular y realizar proyectos más complejos ofreciendo servicios específicos o integrales incluyendo estudios de prefactibilidad, factibilidad, ingeniería conceptual, ingeniería básica e ingeniería de detalle, etc., enfatizando el uso de vapor como una alternativa para producir energía, el cual genera una alta eficiencia térmica, reducción de emisión de contaminantes, menor consumo de combustible y mayor generación eléctrica. El informe que se describe a continuación está fundamentado en la reflexión de las experiencias y conocimientos adquiridos en la empresa Cumbra Ingeniería S.A en la cual se plasma el proceso de generación eléctrica con vapor residual y de su acondicionamiento del condensado para su retorno a fundición. En este proyecto de ingeniería se muestra los criterios y bases de diseño, balance d...
16
tesis de grado
Publicado 2017
Enlace
Enlace
Universidad Nacional Agraria La Molina. Facultad de Industrias Alimentarias. Departamento Académico de Ingeniería de Alimentos y Productos Agropecuarios
17
tesis de maestría
Publicado 2018
Enlace
Enlace
In the Neutrino Physics Field, a lot of careful measurements am made such as : cross section measure¬ment, neutrino oscillation, atmospheric neutrino. Etc. In such experimental measurements one has to get the most accurate numbers as possible but in doing so one meets a lot of constraints and variables. Such is the case of the Test Beam detector (a replica of the full MIN HR//A detector where we lest and compare new targets and devices to put them further in the MINERr/A detector). The way we detect some signal in the detector is by using a scintillator material attached to a photomultiplier (when a charged particle passes through the scintillator, this emits a photon of certain spectra and this light works as input for the PMT which uses the photoelectric effect to magnify the signal (gain)), in the same way the PMT is wired to the Data Acquisition System (DAQ) in order to process the ...
