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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Nova     Open Access   (Followers: 2)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
Acta Scientifica Naturalis     Open Access   (Followers: 4)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 16)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 8)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 4)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 18)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 8)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 3)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 12)
American Academic & Scholarly Research Journal     Open Access   (Followers: 4)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 14)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 5)
Archives of Current Research International     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 1)
ARPHA Proceedings     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Asian Journal of Scientific Research     Open Access   (Followers: 2)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 5)
Australian Field Ornithology     Full-text available via subscription   (Followers: 1)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 6)
Bangladesh Journal of Scientific Research     Open Access  
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 11)
Bilge International Journal of Science and Technology Research     Open Access  
Bioethics Research Notes     Full-text available via subscription   (Followers: 15)
BJHS Themes     Open Access   (Followers: 5)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia Amazónica (Iquitos)     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Comunicata Scientiae     Open Access  
Conference Papers in Science     Open Access  
Configurations     Full-text available via subscription   (Followers: 11)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 14)
Current Research in Geoscience     Open Access   (Followers: 6)
Data     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Discover Sustainability     Open Access   (Followers: 4)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 8)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Epiphany     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 5)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Scientific Journal     Open Access   (Followers: 11)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
Experimental Results     Open Access   (Followers: 2)
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Fontanus     Open Access   (Followers: 1)
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 287)
Frontiers in Climate     Open Access   (Followers: 5)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access  
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Gaudium Sciendi     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access   (Followers: 1)
History of Science and Technology     Open Access   (Followers: 5)
Hoosier Science Teacher     Open Access  
Indian Journal of History of Science     Hybrid Journal   (Followers: 2)
Instruments     Open Access  
Interciencia     Open Access  
International Annals of Science     Open Access  
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Social Sciences and Management     Open Access   (Followers: 3)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 10)
International Science and Technology Journal of Namibia     Open Access   (Followers: 2)
International Scientific and Vocational Studies Journal     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 9)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 3)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 9)
Journal of Advanced Research     Open Access   (Followers: 2)
Journal of Analytical Science & Technology     Open Access   (Followers: 5)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Big History     Open Access   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Journal of Diversity Management     Open Access   (Followers: 4)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of King Saud University - Science     Open Access  
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access  
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Science and Technology Policy Management     Hybrid Journal   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Journal of Scientific Research and Reports     Open Access   (Followers: 1)
Journal of Shanghai Jiaotong University (Science)     Hybrid Journal  
Journal of Social Science Research     Open Access   (Followers: 2)
Journal of Taibah University for Science     Open Access  
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of the History of Ideas     Full-text available via subscription   (Followers: 197)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of the Royal Society of New Zealand     Hybrid Journal   (Followers: 49)
Journal of the South Carolina Academy of Science     Open Access  
Journal of Unsolved Questions     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
Logo STI Science, Technology and Innovation     Open Access   (Followers: 14)
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 4)
Nova     Open Access  
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 1)
Patterns     Open Access   (Followers: 9)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 4)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 15)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access   (Followers: 1)
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista Politécnica     Open Access  
Revista Tecnológica     Open Access  
Revista UniVap     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 5394)
Science & Diplomacy     Free   (Followers: 3)
Science Advances     Free   (Followers: 45)
Science and Technology     Open Access   (Followers: 2)
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  

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Acta Nova
Number of Followers: 2  

  This is an Open Access Journal Open Access journal
ISSN (Online) 1683-0789
Published by SciELO Homepage  [688 journals]
  • Editorial

    •  
  • Análisis del rendimiento para el ciclo de vida de las baterías de iones
           de litio: un estudio de caso del cátodo LiNi 0.6 Co 0.2 Mn 0.2 O 2

    • Abstract: Abstract: The amount of energy and power available in a Li-ion battery (LIB) decrease gradually over time due to degradation that depends on a variety of aging mechanisms. In this study, a reliable computational application was developed to quickly and meticulously analyze the cycling performance of a single or multiple (half or full) cell. It also estimates cycle life based on the aging tendencies of cycling behavior, evaluates the best upper cutoff voltage; identifies and quantifies the evolution of aging mechanisms that affect cycling performance. The application was used for cyclic test analysis such as voltage, charge/discharge current, time, and number of cycles were measured for LiNi0.6Co0.2Mn0.2O2 (NMC622) half-cells cycled 60 times at different charge limit voltages (4.3, 4.4, 4.5, and 4.6) V. It was determined that the best cycle life performance of the NMC622/Li half-cells was obtained for a charge limit voltage of 4.3 V.Resumen: La cantidad de energía y potencia disponible en una batería de iones de litio (LIB) disminuye gradualmente con el tiempo debido a la degradación que depende de una variedad de mecanismos de envejecimiento. En este estudio, se desarrolló una aplicación computacional confiable para analizar de manera rápida y meticulosa el rendimiento de ciclo de una celda simple o múltiple (media o completa). Además, se puede estimar la vida útil del ciclo basándose en las tendencias de envejecimiento del comportamiento cíclico, evalúa el mejor voltaje de corte superior; identifica y cuantifica la evolución de los mecanismos de envejecimiento que afectan el rendimiento de ciclado. La aplicación fue utilizada para el análisis de pruebas cíclico como voltaje, carga/ corriente de descarga, tiempo y número de ciclos fueron medidos para medias celdas de LiNi0.6Co0.2Mn0.2O2 (NMC622) sometidas a ciclos de 60 veces a diferentes voltajes límite de carga (4.3, 4.4, 4.5 y 4.6) V. Se determinó que el mejor rendimiento del ciclo de vida de las medias celdas NMC622/Li se obtuvo para un voltaje límite de carga de 4.3 V.
       
  • Artromotor de asistencia en la rehabilitación de la rodilla con el uso de
           señales mioeléctricas

    • Abstract: Resumen: Las lesiones en la rodilla son muy comunes y se caracterizan por ser altamente incapacitantes, ya que afectan significativamente la capacidad para caminar. En Bolivia, la mayor parte de los centros de rehabilitación no cuentan con equipos tecnológicos dirigidos a esta lesión. Esta investigación presenta el desarrollo de un artromotor que tiene como objetivo la asistencia automatizada para el fisioterapeuta durante la rehabilitación de la rodilla haciendo uso de señales electromiográficas (EMG) que detectan la actividad muscular. El desarrollo contempló un análisis de los requerimientos del sistema, el diseño de la estructura mecánica, la selección de componentes electrónicos adecuados y la implementación de un sistema de control basado en Python, donde además se filtraron las señales EMG utilizando el filtro de Savitzky-Golay. Para validar el sistema se realizaron pruebas con pacientes de distintos tamaños y pesos, donde el artromotor demostró una precisión angular de 0,001° que es mucho mayor a del proceso manual del fisioterapeuta, además permite ajustar la velocidad según sea necesario. El sistema automatiza la tarea del fisioterapeuta y permite el monitoreo de la amplitud articular y la actividad muscular, además posibilita el registro de los pacientes y los datos de cada sesión en una base de datos.Abstract: Knee injuries are very common and are characterized by being highly disabling, as they significantly affect the ability to walk. In Bolivia, most rehabilitation centers do not have technological equipment aimed at this injury. This research presents the development of an arthromotor that aims to provide automated assistance to the physiotherapist during knee rehabilitation using electromyographic (EMG) signals that detect muscle activity. The development contemplated an analysis of the system requirements, the design of the mechanical structure, the selection of suitable electronic components and the implementation of a Python-based control system, where the EMG signals were also filtered using the Savitzky-Golay filter. To validate the system, tests were performed with patients of different sizes and weights, where the arthromotor demonstrated an angular accuracy of 0.001° which is much higher than the manual process of the physiotherapist and allows adjusting the speed as needed. The system automates the task of the physiotherapist and allows the monitoring of joint amplitude and muscle activity, as well as the registration of patients and data from each session in a database.
       
  • Análisis del consumo de leche de coco en Cochabamba como una
           opción saludable

    • Abstract: Resumen: Las leches vegetales han cobrado una importancia significativa en la nutrición debido a sus beneficios para la salud y su aporte en dietas libres de lactosa y veganas. Según Sethi et al. (2016), estas leches ofrecen una alternativa nutritiva y sostenible a las leches de origen animal. En particular, la leche de coco se destaca por sus propiedades únicas. Tulashie et al. (2022) señalan que esta leche posee un perfil nutricional que contribuye a la salud digestiva y cardiovascular. Además, Agdeppa y Zamora (2022) destacan que el consumo de leche de coco puede ayudar a combatir la desnutrición infantil, especialmente en regiones con altos índices de deficiencias nutricionales. Estos estudios subrayan la relevancia de la leche de coco como una opción saludable y accesible dentro de las leches vegetales. La presente investigación tiene la intención de determinar las percepciones demográficas, geográficas y psicográficas de los encuestados, analizar la oferta y la demanda existente en el mercado cochabambino, y evaluar las percepciones de los consumidores de la leche de coco como un producto saludable. Para este propósito, se desarrolló la investigación con un enfoque mixto de carácter cualitativo (inductivo) y cuantitativo (deductivo). Se aplicó, a nivel piloto, una encuesta a 60 personas, lo que permitió calcular una población de 23.923 personas entre 20 y 89 años del distrito 12 de la provincia Cercado en Cochabamba, Bolivia. Los datos fueron analizados utilizando técnicas univariadas, bivariadas y multivariadas. Se identificó que la leche de coco es percibida como un producto saludable, asociado a altos niveles de satisfacción en comparación con otras leches vegetales, siendo su principal competencia la leche animal. El 70% de los encuestados conoce la leche de coco, el 68% la ha probado, y el 41% prefiere consumirla en envases de vidrio. Sin embargo, el 23% desconoce el producto y no lo consume debido a la falta de hábito. En cuanto al mercado, la demanda del producto es ocasional, y la oferta actual está representada por siete marcas, tanto nacionales como internacionales; no obstante, el 68% de los encuestados no las reconoce. Aunque los precios del producto son elevados, existe disposición a pagarlos debido a las aplicaciones y usos que ofrece. Sin embargo, no se observan niveles significativos de posicionamiento para este producto.Abstract: Plant-based milks have gained significant importance in nutrition due to their health benefits and contribution to lactose-free and vegan diets. According to Sethi et al. (2016), these milks offer a nutritious and sustainable alternative to animal-based milks. In particular, coconut milk stands out for its unique properties. Tulashie et al. (2022) point out that this milk has a nutritional profile that contributes to digestive and cardiovascular health. Furthermore, Agdeppa and Zamora (2022) highlight that the consumption of coconut milk can help combat childhood malnutrition, especially in regions with high rates of nutritional deficiencies. These studies underline the relevance of coconut milk as a healthy and accessible option within plant- based milks. This research aims to determine the demographic, geographic and psychographic perceptions of respondents, analyze the existing supply and demand in the Cochabamba market, and evaluate consumer perceptions of coconut milk as a healthy product. For this purpose, the research was developed with a mixed qualitative (inductive) and quantitative (deductive) approach. A survey was applied, at a pilot level, to 60 people, which allowed calculating a population of 23,923 people between 20 and 89 years of age in district 12 of Cercado province in Cochabamba, Bolivia. The data were analyzed using univariate, bivariate and multivariate techniques. It was identified that coconut milk is perceived as a healthy product, associated with high levels of satisfaction compared to other vegetable milks, its main competition being animal milk. 70% of respondents know coconut milk, 68% have tried it, and 41% prefer to consume it in glass containers. However, 23% are unaware of the product and do not consume it due to lack of habit. Regarding the market, the demand for the product is occasional, and the current offer is represented by seven brands, both national and international; however, 68% of respondents do not recognize them. Although the prices of the product are high, there is a willingness to pay them due to the applications and uses it offers. However, no significant levels of positioning are observed for this product.
       
  • Sistema de monitoreo meteorológico y alerta temprana de sequía en zonas
           semiáridas (municipio de Pasorapa) para los horizontes temporales de 1, 3
           y 6 meses

    • Abstract: Resumen: La sequía afecta negativamente a los cultivos, el ganado y a la población en el municipio de Pasorapa en el Departamento de Cochabamba, Bolivia. Se hizo uso del modelo autorregresivo de media móvil (ARMA) en el programa Excel para realizar un pronóstico de la sequía. Los datos de precipitación y temperaturas fueron obtenidos del Servicio Nacional de Meteorología e Hidrología (SENAMHI) 1990 a 2019. Se calculó: Índice de Precipitación Estandarizado (SPI), Anomalías de Precipitación Mensual (MPA), Anomalías Mensuales de Temperatura (MTA), Índice de Aridez (IA), Índice de Evaporación de Precipitación Estándar (SPEI) e Índice de Vegetación de Diferencia Normalizada (NDVI) para conocer el estado de la vegetación. Con los resultados se obtiene gráficos de monitoreo de la sequía y con el modelo (ARMA) los gráficos de pronóstico de sequía para los horizontes temporales de 1, 3 y 6 meses. El horizonte de 1 mes, muestran temporadas cortas de sequía y de humedad en un mismo año; el horizonte de 3 meses muestra poca variación en los resultados pronosticados contra los observados; el horizonte de 6 meses muestra excesivas temporadas de sequía de hasta 3 años de duración. La anomalía de la temperatura presenta valores cercanos a su media histórica cuando la anomalía de precipitación es mayor.Abstract: Drought negatively affects crops, livestock and the population in the municipality of Pasorapa in the Department of Cochabamba, Bolivia. The autoregressive moving average model (ARMA) was used in the Excel program to make a drought forecast. Precipitation and temperature data were obtained from the National Meteorological and Hydrological Service (SENAMHI) from 1990 to 2019. The following were calculated: Standardized Precipitation Index (SPI), Monthly Precipitation Anomalies (MPA), Monthly Temperature Anomalies (MTA), Aridity Index (IA), Standard Precipitation Evaporation Index (SPEI) and Normalized Difference Vegetation Index (NDVI) to know the state of the vegetation. The results are used to obtain drought monitoring graphs and with the (ARMA) model, drought forecast graphs for the time horizons of 1, 3 and 6 months. The 1-month horizon shows short dry and wet seasons in the same year; the 3-month horizon shows little variation in the predicted results versus the observed ones; the 6-month horizon shows excessive dry seasons of up to 3 years duration. The temperature anomaly presents values close to its historical mean when the precipitation anomaly is greater.
       
  • Análisis de eficiencia exergética en el almacenamiento de energía solar
           térmica en materiales de cambio de fase (PCMs)

    • Abstract: Abstract: Renewable energy generation systems in most cases require exergy storage systems to reconcile the differences between renewable energy supply and energy demand. For this it is necessary to have exergy storage systems (not just energy), the efficiency of these systems is very important for the competitiveness of renewable energies. This work analyzes the efficiency of thermal exergy storage systems applied to solar energy use systems through CSP (Concentrated Solar Power) systems. The theoretical analysis shows that the efficiency of exergy storage depends essentially on the temperatures and the temperature differences between the source of thermal energy loading and the source of thermal energy discharge. It is also evident that the closer the system is of the ambient temperature, the lower its efficiency will be until it is practically zero, around ambient temperature. The basic strategy to reduce losses in heat transfer processes for exergy storage is to reduce the temperature difference between the elements that exchange heat. With this criterion, a heat storage system is proposed with PCM at high temperature, the maximum possible, and a combined Bryton and Rankine cycle system that would improve the efficiency of solar exergy capture in a CSP system.Resumen: Los sistemas de generación de energías renovables requieren en la mayoría de los casos sistemas de almacenamiento de exergía para conciliar las diferencias entre la oferta de energía renovable y la demanda de energía. Para ello es necesario contar con sistemas de almacenamiento de exergía (no solamente energía), la eficiencia de estos sistemas es muy importante para la competividad de las energías renovables. En este trabajo se analiza en particular la eficiencia de los sistemas de almacenamiento de exergía térmica aplicada a sistemas de aprovechamiento de energía solar mediante sistemas CSP (Concentrated Solar Power). El análisis teórico muestra que la eficiencia del almacenamiento de exergía depende esencialmente de las temperaturas y las diferencias de temperatura entre la fuente de carga de energía térmica y la fuente de descarga de la energía térmica, también se evidencia que mientras más cerca se encuentra el sistema de la temperatura ambiente, menor será su eficiencia hasta ser prácticamente cero, cerca de la temperatura ambiente. La estrategia básica para reducir las pérdidas en los procesos de transferencia de calor para el almacenamiento de exergía es reducir la diferencia de temperatura entre los elementos que intercambiar calor. Con este criterio se propone un sistema de almacenamiento de calor con PCM a alta temperatura, la máxima posible, y un sistema de ciclos de Bryton y Rankine combinados que permitiría mejorar la eficiencia de la captura de la exergía solar en un sistema CSP.
       
 
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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 1 - 200 of 265 Journals sorted alphabetically
Accountability in Research: Policies and Quality Assurance     Hybrid Journal   (Followers: 19)
Acta Nova     Open Access   (Followers: 2)
Acta Scientifica Malaysia     Open Access   (Followers: 1)
Acta Scientifica Naturalis     Open Access   (Followers: 4)
Adıyaman University Journal of Science     Open Access  
Advanced Science     Open Access   (Followers: 16)
Advanced Science, Engineering and Medicine     Partially Free   (Followers: 8)
Advanced Theory and Simulations     Hybrid Journal   (Followers: 4)
Advances in Research     Open Access  
Advances in Science and Technology     Full-text available via subscription   (Followers: 18)
African Journal of Science, Technology, Innovation and Development     Hybrid Journal   (Followers: 8)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
AFRREV STECH : An International Journal of Science and Technology     Open Access   (Followers: 3)
Alfarama Journal of Basic & Applied Sciences     Open Access   (Followers: 12)
American Academic & Scholarly Research Journal     Open Access   (Followers: 4)
American Journal of Applied Sciences     Open Access   (Followers: 22)
American Journal of Humanities and Social Sciences     Open Access   (Followers: 14)
Anales del Instituto de la Patagonia     Open Access  
Applied Mathematics and Nonlinear Sciences     Open Access   (Followers: 2)
Arab Journal of Basic and Applied Sciences     Open Access  
Arabian Journal for Science and Engineering     Hybrid Journal   (Followers: 1)
Archives Internationales d'Histoire des Sciences     Partially Free   (Followers: 5)
Archives of Current Research International     Open Access  
ARPHA Conference Abstracts     Open Access   (Followers: 1)
ARPHA Proceedings     Open Access  
Asian Journal of Advanced Research and Reports     Open Access  
Asian Journal of Scientific Research     Open Access   (Followers: 2)
Asian Journal of Technology Innovation     Hybrid Journal   (Followers: 5)
Australian Field Ornithology     Full-text available via subscription   (Followers: 1)
Australian Journal of Social Issues     Hybrid Journal   (Followers: 6)
Bangladesh Journal of Scientific Research     Open Access  
Beni-Suef University Journal of Basic and Applied Sciences     Open Access   (Followers: 1)
Berichte Zur Wissenschaftsgeschichte     Hybrid Journal   (Followers: 11)
Bilge International Journal of Science and Technology Research     Open Access  
Bioethics Research Notes     Full-text available via subscription   (Followers: 15)
BJHS Themes     Open Access   (Followers: 5)
Bulletin de la Société Royale des Sciences de Liège     Open Access  
Bulletin of the National Research Centre     Open Access  
Chain Reaction     Full-text available via subscription  
Ciencia Amazónica (Iquitos)     Open Access  
Ciencia en su PC     Open Access   (Followers: 1)
Ciencia Ergo Sum     Open Access  
Ciência ET Praxis     Open Access  
Communications Faculty of Sciences University of Ankara Series A2-A3 Physical Sciences and Engineering     Open Access  
Comunicata Scientiae     Open Access  
Conference Papers in Science     Open Access  
Configurations     Full-text available via subscription   (Followers: 11)
COSMOS     Hybrid Journal   (Followers: 1)
Crea Ciencia Revista Científica     Open Access  
Current Issues in Criminal Justice     Hybrid Journal   (Followers: 14)
Current Research in Geoscience     Open Access   (Followers: 6)
Data     Open Access   (Followers: 4)
Dhaka University Journal of Science     Open Access  
Discover Sustainability     Open Access   (Followers: 4)
Einstein (São Paulo)     Open Access  
Ekaia : EHUko Zientzia eta Teknologia aldizkaria     Open Access  
Emergent Scientist     Open Access  
Enhancing Learning in the Social Sciences     Open Access   (Followers: 8)
Enseñanza de las Ciencias : Revista de Investigación y Experiencias Didácticas     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Epiphany     Open Access   (Followers: 1)
Ethiopian Journal of Education and Sciences     Open Access   (Followers: 5)
European Online Journal of Natural and Social Sciences     Open Access   (Followers: 4)
European Scientific Journal     Open Access   (Followers: 11)
Evidência - Ciência e Biotecnologia - Interdisciplinar     Open Access  
Exchanges : the Warwick Research Journal     Open Access   (Followers: 1)
Experimental Results     Open Access   (Followers: 2)
Fides et Ratio : Revista de Difusión Cultural y Científica     Open Access  
Fontanus     Open Access   (Followers: 1)
Forensic Science Policy & Management: An International Journal     Hybrid Journal   (Followers: 287)
Frontiers in Climate     Open Access   (Followers: 5)
Frontiers in Science     Open Access   (Followers: 1)
Fundamental Research     Open Access  
Futures & Foresight Science     Hybrid Journal   (Followers: 1)
Gaudium Sciendi     Open Access  
Ghana Studies     Full-text available via subscription   (Followers: 15)
Global Journal of Pure and Applied Sciences     Full-text available via subscription  
Globe, The     Full-text available via subscription   (Followers: 4)
HardwareX     Open Access  
Heidelberger Jahrbücher Online     Open Access  
Heliyon     Open Access   (Followers: 1)
History of Science and Technology     Open Access   (Followers: 5)
Hoosier Science Teacher     Open Access  
Indian Journal of History of Science     Hybrid Journal   (Followers: 2)
Instruments     Open Access  
Interciencia     Open Access  
International Annals of Science     Open Access  
International Journal of Advanced Multidisciplinary Research and Review     Open Access  
International Journal of Applied Science     Open Access  
International Journal of Engineering, Science and Technology     Open Access  
International Journal of Network Science     Hybrid Journal   (Followers: 3)
International Journal of Social Sciences and Management     Open Access   (Followers: 3)
International Journal of Technology Policy and Law     Hybrid Journal   (Followers: 10)
International Science and Technology Journal of Namibia     Open Access   (Followers: 2)
International Scientific and Vocational Studies Journal     Open Access  
Investiga : TEC     Open Access  
Investigación Joven     Open Access  
Investigacion y Ciencia     Open Access   (Followers: 1)
Iranian Journal of Science and Technology, Transactions A : Science     Hybrid Journal  
iScience     Open Access   (Followers: 2)
Issues in Science & Technology     Free   (Followers: 9)
Ithaca : Viaggio nella Scienza     Open Access  
J : Multidisciplinary Scientific Journal     Open Access  
Jaunujų mokslininkų darbai     Open Access   (Followers: 3)
Journal de la Recherche Scientifique de l'Universite de Lome     Full-text available via subscription  
Journal of Chromatography & Separation Techniques     Open Access   (Followers: 9)
Journal of Advanced Research     Open Access   (Followers: 2)
Journal of Analytical Science & Technology     Open Access   (Followers: 5)
Journal of Applied Science and Technology     Full-text available via subscription   (Followers: 1)
Journal of Applied Sciences and Environmental Management     Open Access   (Followers: 1)
Journal of Big History     Open Access   (Followers: 4)
Journal of Composites Science     Open Access   (Followers: 4)
Journal of Diversity Management     Open Access   (Followers: 4)
Journal of Indian Council of Philosophical Research     Hybrid Journal  
Journal of Institute of Science and Technology     Open Access  
Journal of King Saud University - Science     Open Access  
Journal of Mathematical and Fundamental Sciences     Open Access  
Journal of Negative and No Positive Results     Open Access  
Journal of Responsible Technology     Open Access  
Journal of Science and Technology     Open Access   (Followers: 2)
Journal of Science and Technology     Open Access   (Followers: 1)
Journal of Science and Technology (Ghana)     Open Access   (Followers: 3)
Journal of Science and Technology Policy Management     Hybrid Journal   (Followers: 1)
Journal of Science Foundation     Open Access   (Followers: 1)
Journal of Scientific Research and Reports     Open Access   (Followers: 1)
Journal of Shanghai Jiaotong University (Science)     Hybrid Journal  
Journal of Social Science Research     Open Access   (Followers: 2)
Journal of Taibah University for Science     Open Access  
Journal of the Ghana Science Association     Full-text available via subscription   (Followers: 3)
Journal of the History of Ideas     Full-text available via subscription   (Followers: 197)
Journal of the Indian Institute of Science     Hybrid Journal   (Followers: 4)
Journal of the Royal Society of New Zealand     Hybrid Journal   (Followers: 49)
Journal of the South Carolina Academy of Science     Open Access  
Journal of Unsolved Questions     Open Access  
Jurnal Sains Dasar     Open Access  
Jurnal Teknosains     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
Logo STI Science, Technology and Innovation     Open Access   (Followers: 14)
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal   (Followers: 1)
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 4)
Nova     Open Access  
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 1)
Patterns     Open Access   (Followers: 9)
People and Nature     Open Access   (Followers: 4)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription   (Followers: 4)
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
Quantum Science and Technology     Hybrid Journal   (Followers: 15)
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access   (Followers: 1)
Research Policy : X     Open Access   (Followers: 3)
Respuestas     Open Access  
Revista Bases de la Ciencia     Open Access  
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista Politécnica     Open Access  
Revista Tecnológica     Open Access  
Revista UniVap     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 5394)
Science & Diplomacy     Free   (Followers: 3)
Science Advances     Free   (Followers: 45)
Science and Technology     Open Access   (Followers: 2)
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  

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