Nexo Revista Científica最新文献_第3页

Concreto autoconsolidable conteniendo aditivos naturales como agentes modificadores de viscosidad 含有天然外加剂作为粘度调节剂的自密实混凝土

Nexo Revista Científica Pub Date : 2023-11-30 DOI: 10.5377/nexo.v36i05.17297

Ana Y. Blandón López, E. F. Hernández, Sofía A. Arauz Navarro, Xaviera L. Mayorga Parrales

引用次数: 0

Convective drying of sweet pepper (Capsicum annuum L. 'Tres Cantos') and yellow onion (Allium cepa L. 'Yellow Granex F1') 对流干燥甜椒（Capsicum annuum L. 'Tres Cantos'）和黄洋葱（Allium cepa L. 'Yellow Granex F1')

Nexo Revista Científica Pub Date : 2023-11-30 DOI: 10.5377/nexo.v36i05.17302

Joseph Orozco, Juan Alonso, R. Gamero, Apolinar Picado

引用次数: 0

Scale up proposal for the spray drying process of hebernem-s bionematicide 关于扩大 HEBERNEM-S 仿生杀虫剂喷雾干燥工艺规模的建议

Nexo Revista Científica Pub Date : 2023-11-30 DOI: 10.5377/nexo.v36i05.17309

Y. L. Paneque Díaz, R. M. Segura Silva, Nemecio González Fernández, Jesús Zamora Sánchez, Eikel Pérez González, Lourdes M. Respo Zafra, Aylin Nordelo Valdivia, Amaury Pérez Sánchez

{"title":"Scale up proposal for the spray drying process of hebernem-s bionematicide","authors":"Y. L. Paneque Díaz, R. M. Segura Silva, Nemecio González Fernández, Jesús Zamora Sánchez, Eikel Pérez González, Lourdes M. Respo Zafra, Aylin Nordelo Valdivia, Amaury Pérez Sánchez","doi":"10.5377/nexo.v36i05.17309","DOIUrl":"https://doi.org/10.5377/nexo.v36i05.17309","url":null,"abstract":"The need for robust spray dryer scale-up methods is essential to control critical quality attributes in the biopharmaceutical industry. In this second part, various parameters are determined such as the heat capacity of the cream (value of 3.626 kJ/kg.ºC), the enthalpies and mass flowrates of the different streams involved, the Sauter diameter (88.78 μm), the drying total time (6.90 s) and the efficiencies. A mathematical model was also obtained by using MATLABÒ software, in order to determine the main phenomenological characteristics of the evaluated spray drying process. In general, the increase in the cream feeding temperature, the powder temperature, the cream dry mass and the rotation speed of the atomizer decrease the final humidity of the powder, while the air inlet temperature and the absolute air humidity increase it. The temperature of the powder at the exit of the cyclone and the rotation speed of the atomizer disk are the variables that most influence the scale-up of spray drying. The new mathematical model obtained in this work quantitatively describes the spray-drying process of HeberNem-SÒ bionematicide.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"201 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139203708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluación experimental de un secador solar inflable de bolsa para el secado de cacao 用于烘干可可的充气式太阳能袋式干燥机的实验评估

Nexo Revista Científica Pub Date : 2023-11-30 DOI: 10.5377/nexo.v36i05.17300

Roberto Enrique Tenorio-Herrera, María Carolina Urbina-Cornavaca, Rodolfo Agenor Espinosa-Morales, María de Fátima Bolaños-Ortega, Henry Pedroza-Chamorro

{"title":"Evaluación experimental de un secador solar inflable de bolsa para el secado de cacao","authors":"Roberto Enrique Tenorio-Herrera, María Carolina Urbina-Cornavaca, Rodolfo Agenor Espinosa-Morales, María de Fátima Bolaños-Ortega, Henry Pedroza-Chamorro","doi":"10.5377/nexo.v36i05.17300","DOIUrl":"https://doi.org/10.5377/nexo.v36i05.17300","url":null,"abstract":"En este trabajo se utilizó un prototipo de secador solar inflable de bolsa para evaluar el secado de cacao recién fermentado. Dicho secador consta de un túnel semicilíndrico con fondo de lona vinílica impermeable color negro y cubierta de plástico translúcido; ambas partes unidas mediante una cremallera. Este secador solar híbrido directo y activo, de baja temperatura, tiene una longitud total de 6.15 m y ancho 2.00 m; área útil de secado 8.82 m2; capacidad 177 kg de cacao recién fermentado. Su sistema fotovoltaico suministra energía a un ventilador y a una resistencia eléctrica. Durante la evaluación se redujo en cinco días la humedad de 84.60 kg de cacao recién fermentado desde 50% bh hasta 7.4% bh; manteniendo su temperatura siempre por debajo de 65 °C. A su paso por el equipo a 0.017 m/s, el aire desecante incrementaba su temperatura hasta en 20 °C y reducía su humedad relativa hasta 30 %. La eficiencia energética promedio del secador disminuyó conforme se reducía la humedad del grano: desde 72.63%, el primer día, hasta 8.51%, el quinto día. La evaluación físico-sensorial del cacao obtenido indicó que es aceptable para elaborar chocolate.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"252 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139203442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Conceptual foundations and global challenges in the formation of digital sovereignty of the state 国家数字主权形成过程中的概念基础和全球性挑战

Nexo Revista Científica Pub Date : 2023-11-30 DOI: 10.5377/nexo.v36i05.17305

Dilmurad Iakhiaev, A. Grigorishchin, Lyudmila Voronina, Diana Dementeva, Irina Ivanova

引用次数: 0

Generative and non-parametric model for real-time event detection in social networks based on textual analysis 基于文本分析的社交网络实时事件检测生成非参数模型

Nexo Revista Científica Pub Date : 2023-06-30 DOI: 10.5377/nexo.v36i03.16462

Masoumeh Aziziansiadar

引用次数: 0

Valoración crítica sobre la falla nortecubana

Nexo Revista Científica Pub Date : 2023-06-30 DOI: 10.5377/nexo.v36i03.16447

Mario Ovtavio Cotilla Rodríguez, José Leonardo Álvarez Gómez

引用次数: 1

Improvement of collapsing problematic soils on the sabzevar-mashhad railway route (northeast of Iran) using traditional additives 利用传统添加剂改善伊朗东北部sabzevar-mashhad铁路沿线有塌陷问题的土壤

Nexo Revista Científica Pub Date : 2023-06-30 DOI: 10.5377/nexo.v36i03.16461

H. Hashemi, A. Yazdi, E. S. Teshnizi

{"title":"Improvement of collapsing problematic soils on the sabzevar-mashhad railway route (northeast of Iran) using traditional additives","authors":"H. Hashemi, A. Yazdi, E. S. Teshnizi","doi":"10.5377/nexo.v36i03.16461","DOIUrl":"https://doi.org/10.5377/nexo.v36i03.16461","url":null,"abstract":"Collapsing soils are among the problematic soils in geotechnical engineering. These soils have a relatively good resistance in their natural state with low humidity, but in case of saturation without change in the incoming load or subjected to vibration force, they settle a lot and in many cases, it will cause cracking or destruction of foundations, roads, railway lines, dams, pipelines and other existing structures. Collapsing soils are scattered in many regions of the world, in Iran these soils are mostly observed in the central and eastern regions. In this research, according to the samples taken from Khorasan-Razavi province in the area of Sabzevar-Mashhad, these samples have been shown to be in the category of collapsing soils based on the tests performed according to ASTM standards. In order to improve this soil, cement and lime additives with percentages of 5 and 10 percent have been used, which has improved the shear properties of the soil due to the addition of lime and cement, so that it causes an increase in the friction angle in the soil, which indicates an improvement in the soil parameters. The results obtained with regard to the addition of cement and lime to the compacted soil show that the index of compaction in the addition of lime is better than that of cement and the results show that with the increase of lime, the soil has a 68% and 78% decrease in the soil compaction index, respectively, but when cement is added to the soil, it causes the percentage of raking index to improve by 34 and 37%.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"2011 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127369070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The quality systems of additive technologies for aerospace parts manufacturing 航空航天零部件增材制造技术质量体系

Nexo Revista Científica Pub Date : 2023-06-30 DOI: 10.5377/nexo.v36i03.16454

V. Kokareva, V. Smelov, Maksim Zvyagincev

引用次数: 0

Sistema de alerta temprana para la reducción de riesgos de incendios en viviendas 减少房屋火灾风险的早期预警系统

Nexo Revista Científica Pub Date : 2023-06-30 DOI: 10.5377/nexo.v36i03.16446

San Ying Chow Díaz, Aurel Antoñio Cuthbert Moreno, Dexon-Mckensy Sambola, J. A. Flores-Pacheco

{"title":"Sistema de alerta temprana para la reducción de riesgos de incendios en viviendas","authors":"San Ying Chow Díaz, Aurel Antoñio Cuthbert Moreno, Dexon-Mckensy Sambola, J. A. Flores-Pacheco","doi":"10.5377/nexo.v36i03.16446","DOIUrl":"https://doi.org/10.5377/nexo.v36i03.16446","url":null,"abstract":"El programa Sistema de monitoreo de alerta temprana para la reducción de riesgos de incendios en viviendas familiares, consiste en desarrollar un sistema capaz de monitorear y alertar sobre la presencia de estos siniestros. El proyecto fue diseñado con el propósito de reducir las posibilidades de incendios dentro de la vivienda. En consecuencia, impactaría directamente en la protección de la infraestructura y componentes internos del hogar, sin obviar lo más importante, la vida humana de los residentes. Durante el desarrollo, se utilizó la metodología XP o eXtreme Programming, priorizando los requerimientos de desarrollo tales como: monitoreo sobre amenazas de incendio, contar con un sistema de alarma y una aplicación móvil de recibimiento de notificaciones a través de su celular conectado a internet. Dando como resultado un sistema que consta de un panel principal con tecnologías de hardware y software libre compuestos por sensores detectores de humo, fuego y temperatura, encargados del monitoreo de estas variables. En caso de encontrar alguna perturbación, el sistema activa la alarma sonora para alertar a los habitantes de la vivienda sobre el peligro y advertencia al teléfono móvil del usuario. En definitiva, con la implementación del sistema, se podrá detectar a tiempo un conato de incendio dentro del hogar, con el fin de evitar pérdida de vidas y el impacto económico y material que esto conlleva.","PeriodicalId":335817,"journal":{"name":"Nexo Revista Científica","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114802376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0