Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
Buscar alternativas:
thermal process » thermal processing (Expander búsqueda), therapy process (Expander búsqueda)
para thermal » para terminal (Expander búsqueda), a thermal (Expander búsqueda), para formal (Expander búsqueda)
thermal process » thermal processing (Expander búsqueda), therapy process (Expander búsqueda)
para thermal » para terminal (Expander búsqueda), a thermal (Expander búsqueda), para formal (Expander búsqueda)
1
artículo
The main objective of this work to estab1ish the controlled use of heat as a function of the pH in order to destroy all the microorganisms that are this bacterias anaerobic forced thermopiles and essentially mesófilas. The bacteria more resistant esporulada to 1he heat is Clostridium botulinum and it is considered lndicative microorganísm of the sterellization. Another parameter of very important control is the quality of the matter it prevails that it can resist the operations of thermal prcsecution, the classification is made in function to the hat size, weight, color and it forms.
2
artículo
The main objective of this work to estab1ish the controlled use of heat as a function of the pH in order to destroy all the microorganisms that are this bacterias anaerobic forced thermopiles and essentially mesófilas. The bacteria more resistant esporulada to 1he heat is Clostridium botulinum and it is considered lndicative microorganísm of the sterellization. Another parameter of very important control is the quality of the matter it prevails that it can resist the operations of thermal prcsecution, the classification is made in function to the hat size, weight, color and it forms.
3
artículo
Publicado 2024
Enlace
Enlace
Currently, the food industry prioritizes the safety and quality of products, facing the challenge of maintaining sensory and nutritional integrity. To address this challenge, emerging non-thermal technologies are being explored that offer significant advantages in improving food quality over conventional technologies. This review aims to provide a comprehensive understanding of how these innovative technologies can transform the traditional food processing landscape as we know it. Non-thermal technologies have the potential to reduce energy consumption for food production, processing and packaging, compared to conventional thermal treatments. Furthermore, these technologies are particularly suitable for efficiently preserving bioactive compounds present in foods. This review describes the fundamental principles, applications, advantages and limitations of emerging technologies in food pr...
4
artículo
Publicado 2020
Enlace
Enlace
Accurate determination of plant water status is mandatory to optimize irrigation scheduling and thus maximize yield. Infrared thermography (IRT) can be used as a proxy for detecting stomatal closure as a measure of plant water stress. In this study, an open-source software (Thermal Image Processor (TIPCIP)) that includes image processing techniques such as thermal-visible image segmentation and morphological operations was developed to estimate the crop water stress index (CWSI) in potato crops. Results were compared to the CWSI derived from thermocouples where a high correlation was found ( = 0.84). To evaluate the effectiveness of the software, two experiments were implemented. TIPCIP-based canopy temperature was used to estimate CWSI throughout the growing season, in a humid environment. Two treatments with different irrigation timings were established based on CWSI thresholds: 0.4 (T...
5
artículo
Publicado 2019
Enlace
Enlace
In this paper, the technical, financial and legal feasibility of employing solar cogeneration for the food industry sector in Peru will be demonstrated. In consequence, we will quantify the electric and thermal energy obtained from a conventional Rankine cycle, with the particularity that the water used to condense the steam that exits the turbine will be employed for the required processes in the industrial plants, because of the high temperature obtained from the heat exchange with the steam. In addition, we will detail the processes in which the obtained energy will be employed, the quantity of devices to be used in this system, as well as the required specifications and the thermodynamic parameters, for a proper operation of the cogeneration system. Moreover, we will prove the legal feasibility of choosing a solar cogeneration system in the Peruvian legal system, and, in ...
6
artículo
Publicado 2020
Enlace
Enlace
In this work we study the effects on the porosity and microhardness properties when using different ZrO2 + 8% Y2O3 diameters powders (less than 40 μm, between 40 to 60 μm and greater than 80 μm) to deposit in the upper layer of a TBC system (thermal barrier coating) of double layer formed by NiCrCoAlY and ZrO2 + 8% Y2O3 using the plasma spray process, in order to find the suitable powder and feasible to use as top layer. To this end, instruments such as TESCAN Vega SB scanning electron microscope with INCA Energy dispersive microanalyzer were used, with which it was possible to detect the porosity in different areas of evaluation of the upper layer and the Vickers durometer to measure the microhardness. Verifying that with particle diameters smaller than 40 μm, the aforementioned properties are adequate for the conformation of the ZrO2 + 8% Y2O3 top layer.
7
tesis doctoral
Chronic wounds are a serious health problem because they do not follow a normal healing process and take a long time to heal. Monitoring the evolution of the wound is vital to evaluate the current treatment and determine the need for a different approach. Traditionally, this assessment is based on manual measurements and visual observation, which can be subjective and non-quantitative, leading to uncertainty in patient follow-up. This thesis proposes to leverage color and thermal imaging from cameras embedded in a smartphone to provide a non-invasive tool for wound assessment. Standard and affordable devices enables its applicability and scalability in clinical settings. We propose a methodology to create realistic and accurate 3D thermal models from a set of images captured with affordable and handheld devices. This approach was automated and evaluated in clinical settings on a total of...
8
tesis doctoral
Chronic wounds are a serious health problem because they do not follow a normal healing process and take a long time to heal. Monitoring the evolution of the wound is vital to evaluate the current treatment and determine the need for a different approach. Traditionally, this assessment is based on manual measurements and visual observation, which can be subjective and non-quantitative, leading to uncertainty in patient follow-up. This thesis proposes to leverage color and thermal imaging from cameras embedded in a smartphone to provide a non-invasive tool for wound assessment. Standard and affordable devices enables its applicability and scalability in clinical settings. We propose a methodology to create realistic and accurate 3D thermal models from a set of images captured with affordable and handheld devices. This approach was automated and evaluated in clinical settings on a total of...
9
artículo
Publicado 2012
Enlace
Enlace
It was determined the parameters of thermal treatment for the maximum retention of color (5,83 %) and texture (2,29 %) of canned green beans (Vicia faba L.) in brine, to processing temperature 126,7 °C for a time of 8,69 minutes, by Jen et al method. The tests were made with green beans from Mantaro valley, in Peru. Likewise, was realized the evaluation of the thermal treatment to determinate characteristics of heat penetration in the slower warming point (3,8 cm from base of can) finding the following results: fh = 19,34 minutes, jh = 0,46; Tpsih = 95,6°C, fc = 16,67 minutes, jc = 1,11 and Tpsic = 123,2°C; and the times of processing, by Stumbo method, to temperatures 104,4; 110; 115,6; 121,1; 126,7 and 132,2°C, being the times of processing 108,79; 54,76; 24,72; 13,77; 8,69 and 5,51 minutes, respectively, to obtain in all cases the same value of F121,1°C of 3,15 minutes.
10
artículo
Publicado 2012
Enlace
Enlace
It was determined the parameters of thermal treatment for the maximum retention of color (5,83 %) and texture (2,29 %) of canned green beans (Vicia faba L.) in brine, to processing temperature 126,7 °C for a time of 8,69 minutes, by Jen et al method. The tests were made with green beans from Mantaro valley, in Peru. Likewise, was realized the evaluation of the thermal treatment to determinate characteristics of heat penetration in the slower warming point (3,8 cm from base of can) finding the following results: fh = 19,34 minutes, jh = 0,46; Tpsih = 95,6°C, fc = 16,67 minutes, jc = 1,11 and Tpsic = 123,2°C; and the times of processing, by Stumbo method, to temperatures 104,4; 110; 115,6; 121,1; 126,7 and 132,2°C, being the times of processing 108,79; 54,76; 24,72; 13,77; 8,69 and 5,51 minutes, respectively, to obtain in all cases the same value of F121,1°C of 3,15 minutes.
11
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...
12
artículo
Publicado 2025
Enlace
Enlace
Population growth and urbanization generated a greater global energy demand, positioning solar energy as one of the main sustainable alternatives to address this challenge. The aim of this study was to map the advances, challenges, and perspectives of photovoltaic-thermal (PV/T) systems through a bibliometric analysis and a review of the most relevant publications from the Scopus database. Applying predefined inclusion and exclusion criteria, a total of 1077 documents were processed using Biblioshiny, an R-based interface, and VosViewer. The countries with the highest scientific production and international collaboration were China, India, and Iran, with the University of Science and Technology of China standing out as the most influential institution. The most prominent journal was Solar Energy, based in the United Kingdom. The most frequently cited studies highlight significant advance...
13
artículo
Publicado 2021
Enlace
Enlace
In the present work, a solar thermal accumulator has been designed to improve the temporary instability of solar energy in the family drying of products. The structure of the accumulator is defined by thermal simulation in Comsol Multiphysics. The accumulator is modular, with a compact rectangular copper plate whose dimensions are 30 cm x 20 cm x 3 cm that encapsulates 1 kg of paraffin as phase change material. To improve the heat transfer from the phase change material, due to the low thermal conductivity of the paraffin, internal and / or external fins are incorporated into the accumulator to accelerate the process of charging and discharging the thermal energy. When two accumulator units are incorporated in the collector plate of a cabin solar dryer, the temperature of the air entering the drying chamber is stabilized during theaccumulator charging proces...
14
artículo
Publicado 2015
Enlace
Enlace
Baños del Inca is one of the more important spas of America that is find in the Cajamarca city to 6 km to east of the city. The Fuming liquid appear since the volcanic rock of subsoil which temperatures approaches 70 and 75°C, the heat of the water is of volcanic origin. The present investigation has as purpose to determine the physical properties and chemical composition of water, of Baños del Inca: Cajamarca using methods recognized of drinking waters and waste waters for to know its composition and to identify possible therapeutic properties. The physical chemical analysis were produced: temperature, pH, total dissolved solids, electrical conductivity, saltiness, bicarbonate, chlorides, sulfates, sulphides, sodium, total hardness and calcium hardness; moreover of fixed metals and dissolved metals. They were used standardized methods, among them, of APHA, AWWA, WPCF. The results sho...
15
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...
16
tesis de maestría
Publicado 2023
Enlace
Enlace
El presente trabajo tuvo como objetivo general, elaborar y justificar la propuesta de un modelo de gestión de recursos humanos por competencias que garantice la efectividad del desempeño laboral en la empresa Acoustic & Thermal Solutions Applied S.A.C. Para ello se realizó una investigación de tipo descriptiva no experimental que describa la situación y mida, evalúe y recolecte datos sobre diferentes aspectos de la empresa sin manipular las variables, solo limitándose a observarlas en su contexto natural. Para ello se tomó una muestra de 08 trabajadores (puestos estratégicos y de soporte) que con su trabajo inciden en los resultados de la empresa a quienes se les aplico el inventario de evaluación de competencias administrativas HJS (Hellriegel, Jackson & Slocum, 2011) así como técnicas de recolección de datos como cuestionarios y encuesta que permitió definir la situación...
17
artículo
Publicado 2003
Enlace
Enlace
This paper focuses on the best use of energetic resources on industrial activity, according to the international and national need of competitiveness. Annually, a quantification of fuel savings is made and the economic benefit accomplished by the companies is checked. This was realized through the energy recovered from the elimination process occured the operation of a steam generator. A real case is discussed to convalidate the stated concepts
18
artículo
Publicado 2020
Enlace
Enlace
A solar thermal accumulator is designed and built using the phase change principle, to optimize the drying process in a familiar solar dryer, in an additional period to the cessation of the incidence of solar radiation; the phase change material selected is the commercial paraffin, whose thermal properties have been characterized by the KD2 Pro meter. The melting temperature of the paraffin (53 oC) is around the operating temperature of the medium temperature solar dryer. The solar thermal accumulator is characterized by being modular, consisting of twelve cylindrical units of recycled aluminum, where each unit contains 200 g of paraffin and incorporates meshes with aluminum fins to improve the flow of heat to the outside and optimize its transfer to the air. As a result, the additional drying time has been increased by an order of 2 hours without intervention of solar radiation, maintai...
19
artículo
Evaluate the effect of gaseous ozone on physicochemical characteristics, molds and yeasts count and overall appearance of granada. Wonderful variety fruits of granada was collected in a glass chamber where the gas is injected using ozone generator equipment with flow of 500 mg / h and a digital meter for measuring the ozone concentration. A central composite design rotable (CCDR) was used to analyze the effect of the concentration of ozone gas and storage time (p < 0.05) on weight loss, firmness, shell color, soluble solids, mold and yeasts count, total anthocyanins content and overall appearance. It was determined that the concentration of ozone gas had significant effect on the responses studied variables. The quadratic model provided the best fit of data. It was established that the concentration of ozone between 40 - 50 ppm, it allows for the lowest weight loss, low count of molds...
20
artículo
Evaluate the effect of gaseous ozone on physicochemical characteristics, molds and yeasts count and overall appearance of granada. Wonderful variety fruits of granada was collected in a glass chamber where the gas is injected using ozone generator equipment with flow of 500 mg / h and a digital meter for measuring the ozone concentration. A central composite design rotable (CCDR) was used to analyze the effect of the concentration of ozone gas and storage time (p < 0.05) on weight loss, firmness, shell color, soluble solids, mold and yeasts count, total anthocyanins content and overall appearance. It was determined that the concentration of ozone gas had significant effect on the responses studied variables. The quadratic model provided the best fit of data. It was established that the concentration of ozone between 40 - 50 ppm, it allows for the lowest weight loss, low count of molds...
