Ciencias Naturales y Exactas: Recent submissions
Now showing items 261-280 of 581
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Aleaciones metálicas formadoras de hidruro para almacenamiento de hidrógeno
(Instituto Federal de Educação, Ciência e Tecnologia de São Paulo, 2019-11-14)En sistemas para el aprovechamiento integral de fuentes de energía renovables, tales como las energías solar y eólica, surge principalmente la dificultad del almacenamiento y el transporte de la energía al centro de consumo, ... -
¿Uno, dos o tres géneros? Taxonomía integrativa y diversidad supraespecífica en paleontología ratas vizcacha (Rodentia, Octodontidae)
(Sociedad Argentina para el Estudio de los Mamíferos (SAREM), 2019-12-14)Desde su descripción, hace casi dos décadas, la situación taxonómica de los géneros monotípicos Pipanacoctomys y Salinoctomys ha sido intensamente debatida. Mientras que para algunos autores ambos géneros corresponderían ... -
Seguimiento del estado de una cámara de germinación hidropónica utilizando email basado en node-red
(Universidad Nacional de Chilecito (UNdeC), 2019-08-18)El objetivo de este trabajo es implementar sobre un sistema de cultivo hidropónico, funcionalidades de IoT (Internet of things, Internet de las cosas). Con esto, se pretende sacar provecho del auge que está teniendo dicha ... -
Frecuency of carbapenemase-producing enterobacteriaceae in anal swabs from an adult unit intensive care
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-12-14)The carbapenemase-producing enterobacteriaceae (CPE) are one of the main concerns of global health, mainly those that are encoded by plasmids. The aim was to describe the progress of colonization by CPE in anal swabs of ... -
Genetic and epi-genetic alterations of the PTEN gene : key in the relationship between type 2 diabetes and cancer
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-10-15)Cancer pathogenesis has been associated with genetic and epigenetic alterations that may lead to the inactivation or decrease of tumor-suppressor genes, such as the PTEN gene. In particular, alterations in the PI3K/PTEN ... -
Simulation of the electrical percolation of carbon nanotube composites in polymethylmethacrylate matrix: two-dimensional and three-dimensional analyses using a tortuosity effect of nanofillers
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-12-14)The present work aims to study the simulation of the electrical percolation of carbon nanotubes (CNTs) in polymethylmethacrylate matrix (PMMA). In order to do this, simulations were employed in two-dimensional and ... -
Improvement of quality control system of the in vitro production of sugarcane
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-12-06)The Sugarcane Biofactory at the Villa Clara Center Sugarcane Research Territorial Station plays a vital role in sugarcane production, since it provides seeds of high genetic and phytosanitary quality obtained by biotechnological ... -
Polymeric composite coatings with graphene and graphene oxide for the civil construction – A review
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-11-05)Steel is one of the most used materials in civil construction and, although it exhibits a very satisfactory performance in terms of mechanical properties, it has the disadvantage of susceptibility to tribochemical mechanisms. ... -
Gasification of pine sawdust : Effect of temperature, oxygen rate and vapor
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-09-14)The study of biomass gasification has gained great interest in recent decades, representing an attractive process for the production of energy and heat and the production of hydrogen and second-generation biofuels. The ... -
Sustainable management of construction waste in the Metropolitan Area of Misiones
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-09-10)The Metropolitan Area of Misiones does not have an adequate treatment of construction and demolition waste (CDW) by the municipalities that comprise it, so they do not reach the bases of sustainable development. The aim ... -
Analysis of clay ceramic microstructure with the glass waste incorporation
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-09-08)The study examined the microstructure of ceramics with the addition of glass waste at different temperatures ranging from 800 to 1000 °C. Samples were molded by piston without vacuum, with the incorporation of 20% ... -
Simulation of the ethylene oxide production process in ChemCAD® simulator
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-08-21)Ethylene oxide is an important industrial chemical compound used as an intermediate in the production of glycols and other plastics. In the present work, the process of ethylene oxide (EO) production from the catalytic ... -
Learnings in the professional initiation of graduates from the Teacher Training Careers at the FCEQyN - UNaM - At Secondary Schools
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-11-04)The research had as its object of study the “Learnings in the professional initiation of graduates of the FCEQyNUNaM - At Secondary Schools”. The objectives were: To know and understand the significances that graduates ... -
Chemical constituents and bactericidal and fungicide potential of the essential oil of Pimenta dioica Lindl against pathogenic microorganisms
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-07-28)This study evaluated the chemical profile and antimicrobial activity of essential oil (EO) of P. dioica. The EOs were extracted by hydrodistillation and chemically characterized by gas chromatography coupled to mass ... -
Prevalence of thyroid dysfunction and its relationship with the lipid profile in patients in hospital from Encarnación
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales. Secretaria de Investigación y Posgrado, 2021-05-20)Thyroid dysfunctions are a cause of morbidity and disability worldwide. Little information has been found on the prevalence of thyroid dysfunctions in Paraguay, so this study provides data on their presentation. The objective ... -
Aspergillus species identification in yerba mate from Itapúa Department, Paraguay
(Asociación Argentina de Horticultura, 2020-12-20)Internal commercialization and exportation of yerba mate represent an important economic incentive for yerba producers in the Itapúa department, in Paraguay. Favorable conditions For fungal development during the processing ... -
Reconversión de las clases experimentales de química analítica debido a las ASPO
(Asociación de Educadores en la Química de la República Argentina, 2020-12-30)En este trabajo se presentan los ajustes realizados en la cátedra de Química Analítica para reconvertir las clases presenciales en clases remotas en el contexto de la pandemia por el COVID-19. El principal desafío fue ... -
Aislamiento y caracterización morfológica y molecular de cepas de Escovopsis aisladas de nidos de hormigas cortadoras de hojas de Argentina
(Instituto de Biología UNAM, 2020-12-15)Escovopsis es un género descrito recientemente para el cual se han reportado 5 nuevas especies en los últimos 6 años. La identificación de especies fúngicas está basada en la morfología de las estructuras reproductivas. ... -
Obesidad, hipertensión, síndrome metabólico y diabetes mellitus tipo 2 en dadores de sangre, individuos presuntamente sanos, del banco de sangre, tejidos y biológicos, de la ciudad de Posadas
(Revista Argentina de endocrinología y metabolismo, 2019-03-05)La enfermedad cardiovascular ocupa uno de los primeros puestos como causa de muerte en el mundo. Durante el primer año del proyecto, nos propusimos hallar la prevalencia y su distribución por sexo de hipertensión, obesidad ... -
Bioactive phenolic compounds and organic acids in the decoction of fruits and leaves of Schinus areira L : compuestos fenólicos bioactivos y ácidos orgánicos en la decocción de frutos y hojas de Schinus areira L
(MS Editions, 2021-10-05)Leaf and fruit decoctions of Schinus areira L. from northwest Argentina were investigated here. Phenolic compounds and organic acids were analyzed by HPLC. Antioxidant capacity and a glucosidase inhibition were determined ...
