Investigaciones: Envíos recientes
Mostrando ítems 321-340 de 390
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Colombian Essential Oil of Ruta graveolens against Nosocomial Antifungal Resistant Candida Strains
(BarranquillaIngeniería AgroindustrialSede Norte, 2021-05-14)Drug resistance in antifungal therapy, a problem unknown until a few years ago, is increasingly assuming importance especially in immunosuppressed patients and patients receiving chemotherapy and radiotherapy. In the ...
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Pasting and Dough Rheological Properties of Ackee (Blighia sapida) Aril Flour: A Contribution to the Search for Wheat Flour Substitutes
(BarranquillaIngeniería AgroindustrialSede Norte, 2021-04-26)Wheat is one of the most widely used cereals in the world. However, studies consider wheat flour doughs to be of low nutritional quality, as there is now greater public awareness of celiac disease and gluten intolerance. ...
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Identification and Quantification of Microplastics in Effluents of Wastewater Treatment Plant by Differential Scanning Calorimetry (DSC)
(BarranquillaQuímicaSede Norte, 2022-04-20)In this research, the presence of microplastics was detected through a differential scanning calorimetry (DSC) analysis of three wastewater treatment plants. One of these plants applied only a preliminary treatment stage ...
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Enhanced Tetracycline Removal from Highly Concentrated Aqueous Media by Lipid-Free Chlorella sp. Biomass
(BarranquillaIngeniería IndustrialSede Norte, 2022-04-14)Microalgae are used as a lipid source for different applications, such as cosmetics and biofuel. The nonliving biomass and the byproduct from the lipid extraction procedure can efficiently remove antibiotics. This work has ...
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Mamíferos del departamento del Atlántico, Colombia
(BarranquillaSede Norte, 2020-07-16)We presents the first taxonomic list of wild mammals for the Atlántico department, in the Caribbean coast of Colombia. We recorded 92 species distributed in 11 orders, 37 families, and 74 genera, which represents 16.5 % ...
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Three new species of the spider genus Nopsma (Araneae, Caponiidae, Nopinae) from Colombia
(BarranquillaBiologíaSede Norte, 2021-07-13)Three new Colombian species of the spider genus Nopsma Sánchez-Ruiz, Brescovit & Bonaldo, 2020 are described and illustrated: Nopsma leticia sp. nov. (male) from Amazonas department, Nopsma macagual sp. nov. (male) from ...
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Formulation and existence of weak solutions for a problem of adhesive contact with elastoplasticity and hardening
(BarranquillaMatemáticasSede Norte, 2021-07-16)This paper presents the weak formulation of a quasi-static evolution model for two deformable bodies with unidirectional adhesive unilateral contact on which external loads act. Small deformations and linearized elastoplasticity ...
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Parametric Analysis of a Mechanical Draft Cooling Tower using Two Mathematical Models
(BarranquillaIngeniería QuímicaSede Norte, 2021-06-25)In the present work, a Matlab® computer code for cooling tower simulation was developed to perform a parametric analysis that determines the effect of the column cross-sectional area on multiple operating variables such ...
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On nearly S-paracompactness
(BarranquillaMatemáticasSede Norte, 2021-08-12)- The objective of the present work is to introduce the notion of α-nearly S-paracompact subset, which is closely related to α-nearly paracompact and αS-paracompact subsets. Moreover, we study the invariance under direct ...
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A new Colombian species of Liodessus diving beetles from the Páramo de Sumapaz (Coleoptera, Dytiscidae, Bidessini)
(BarranquillaBiologíaSede Norte, 2021-09-08)Liodessus picinus sp. nov. is described from the Páramo de Sumapaz near Bogota D.C. at 3,500 m above sea level. The species can be distinguished from the other Colombian Liodessus species by its dark coloration, discontinuous ...
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Diversity of longhorned beetles (Coleoptera: Cerambycidae) in the Caribbean region of Colombia: temporal variation between two fragments of tropical dry forest
(BarranquillaBiologíaSede Norte, 2021-09-13)The tropical dry forest is under constant threat from many anthropic activities which are conducted indiscriminately, modifying the forest, and therefore, affecting species that are closely related to its phenology, ...
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Evaluation of Photovoltaic Energy Projects using the Real Options Valuation
(BarranquillaSede Norte, 2020-08-30)The purpose of the article is to analyze from a current perspective how Real Options Valuation facilitate the evaluation of projects for the adoption of photovoltaic energy in countries such as Colombia. A mixed descriptive ...
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Analysis of Energy Consumption in Colombia Using the Holt Method
(BarranquillaSede Norte, 2020-06-08)Energy production is constantly facing major challenges today, because despite initiatives to promote the insertion of renewable energy, electricity consumption has shown considerable growth in recent years. In order to ...
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A Look to the Biogas Generation from Organic Wastes in Colombia
(BarranquillaSede Norte, 2020-06-25)In line with the goals of the Paris Agreement and the guidelines of Conpes 3874 of 2016, Colombia has adopted different strategies to optimize the use of biomass as an energy source and the management of materials in urban ...
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Production and characterization of activated carbon from coal for gold adsorption in cyanide solutions
(BarranquillaIngeniería MecánicaSede Norte, 2019-06-06)En este trabajo se produjeron carbones activados utilizando carbón mineral como materia prima procedente de siete zonas carboníferas colombianas. La activación física se efectuó en dos etapas: una etapa de carbonización ...
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New records of eight species of ground beetles (Coleoptera, Carabidae) from Colombia
(BarranquillaBiologíaSede Norte, 2020-09-01)We report new records of eight species of ground beetles (Coleoptera, Carabidae) from Colombia originated from recent field trips and from museum specimens: Amblygnathus suturalis Putzeys, 1845 (Atlántico), Bembidion ...
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Phytochemical Screening of Callus and Cell Suspensions Cultures of Thevetia peruviana
(BarranquillaQuímicaSede Norte, 2020-02-13)Thevetia peruviana is an ornamental shrub grown-up in many tropical region of the world. This plant produces secondary metabolites with biological properties of interest for the pharmaceutical industry. The objective was ...
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Responsabilidad Social: eje transversal en la formación gerencial de universidades venezolanas
(BarranquillaSede Norte, 2020-05-25)El objetivo de la investigación es analizar la responsabilidad social como eje transversal en la formación gerencial de universidades venezolanas. La investigación fue descriptiva, de diseño transversal, apoyada en la ...
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Air Conditioning Research Evolution from 2008 to 2019: A Scientometric Analysis
(BarranquillaIngeniería MecánicaSede Norte, 2020-04-28)Air conditioning is an essential topic in heat transfer phenomena because it is widely applied in homes and industries. It has an incredible amount of applications ranging from health care to food shelf life. With the ...
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Photophysical study and in vitro approach against Leishmania panamensis of dicloro-5,10,15,20-tetrakis(4- bromophenyl)porphyrinato Sn(IV)
(BarranquillaSede Norte, 2021-11-08)Background: Photodynamic therapy activity against different biological systems has been reported for porphyrins. Porphyrin modifications through peripheral groups and/or by metal insertion inside the ring are main ...
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