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Actividades de apropiación social del conocimiento realizadas por los diferentes programas y grupos de investigación de la Universidad.

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Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia

Ospina, Oscar Efrén; Cardona García, Oscar Hernán (Corporación Universidad de la CostaColombia, 2021)

Introducción— El aluminio se incorpora al agua de manera natural y/o antrópica, con niveles de riesgo para la salud por encima de 0.2 mg/L según la normativa colombiana. Puede surgir como contaminante emergente al utilizarse ...
Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water

Ivanova, Yulia; Hurtado Rodriguez, Rosa Isabel; Gutiérrez Wills, Manuel Santiago (Corporación Universidad de la CostaColombia, 2021)

Introducción— La sede campus Nueva Granada de la Universidad Militar Nueva Granada (Colombia) se construyó respondiendo a las tendencias globales de la arquitectura moderna para estar en armonía con el ambiente a través ...
Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix

Franco Sarmiento, Andrea Carolina; Ruz Echavarria, Wilson Javier; Torregroza, Angélica; Martínez Mera, Eliana Andrea; Torregroza Espinosa, Ana Carolina (Corporación Universidad de la CostaColombia, 2021)

Introduction— The high protein content has made legumes a raw material of interest in the formulation of different agroindustrial products; the trupillo (Prosopis juliflora) tree is an easily accessible, multipurpose, wild ...
Mitigation of nonlinear effects using machine learning in coherent optical access networks

Escobar, Alejandro; Arroyave, Karen ; LOPERA CORTES, JHON ANDERSON; Granada Torres, Jhon James (Corporación Universidad de la CostaColombia, 2021)

Introduction— The use of coherent detection jointly with high-level modulation formats such as 16 and 64-QAM seems to be a convenient strategy to increment capacity of future optical access networks. However, coherent ...
Comparative-experimental study of different roof types in a tropical climate

Tschiersch, Kim-Christin; Jaramillo, J. E.; Ruiz, Karen (Corporación Universidad de la CostaColombia, 2021)

Introduction— The implementation of green roofs in buildings has become increasingly common, because it is an ecological construction alternative that provides great benefits, which range from reducing air pollution to ...

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Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia
...
Ospina, Oscar Efrén | 2021

Introducción— El aluminio se incorpora al agua de manera natural y/o antrópica, con niveles de riesgo para la salud por encima de 0.2 mg/L según la normativa colombiana. Puede surgir como contaminante emergente al utilizarse inadecuadamente coagulantes de sales de aluminio en la clarificación del agua potable. Objetivo— Evaluar la contaminación por aluminio del agua para consumo humano de la región central de Colombia, determinando su potencial origen y cumplimiento de la normativa vigente. Metodología— La investigación de carácter exploratorio, analizó la presencia de aluminio en agua cruda y tratada durante el período 2007–2018, mediante muestras y ensayos de laboratorio, así como la evaluación hidráulica y de operación de plantas de tratamiento de agua, en municipios de los departamentos de Tolima y Cundinamarca, región central de Colombia. Resultados— En más del 30% de los municipios evaluados se evidenció la presencia de aluminio en el agua para consumo humano, por encima del máximo permitido por la normativa vigente. En varios casos se debió a deficiencias en el proceso de tratamiento donde se utilizan sales de aluminio para la coagulación, sin dosificación adecuada como ocurrió en el municipio de Melgar, o por altas concentraciones presentes en las fuentes hídricas de abastecimiento, como es el caso del río Magdalena en la región central de Colombia. Conclusiones— El aluminio en agua para consumo humano, se da por su presencia en fuentes hídricas y producto de deficiencias hidráulicas y operativas en el proceso de clarificación de las plantas de tratamiento donde se usa sulfato de aluminio como coagulante, por inadecuada aplicación de dosis óptimas, deficiente intensidad de agitación y de gradientes de velocidad en mezcla rápida y floculación, tiempos de floculación y sedimentación fuera del rango óptimo.

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Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water
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Ivanova, Yulia | 2021

Introducción— La sede campus Nueva Granada de la Universidad Militar Nueva Granada (Colombia) se construyó respondiendo a las tendencias globales de la arquitectura moderna para estar en armonía con el ambiente a través de sus construcciones bioclimáticas, iluminación con base en energía fotovoltaica y manejo del recurso hídrico. No obstante, el constante crecimiento de la oferta académica, de la infraestructura y de la comunidad universitaria demanda un mayor uso de los recursos naturales, indispensables para un buen funcionamiento de la sede. Uno de estos recursos es el agua. Objetivo— En el trabajo se evaluó la sustentabilidad del manejo del agua en la sede Campus de la universidad. Metodología— Esta evaluación se realizó empleando el Índice de Sustentabilidad del Recurso Hídrico con la integración del concepto de la huella hídrica. Resultados— Se obtuvo que la universidad ha hecho unos esfuerzos para el manejo eficiente del recurso hídrico. No obstante, estos no son suficientes para evaluar el manejo del agua como sustentable. Conclusiones— Teniendo en cuenta este resultado se concluye que la universidad debe formular acciones de mejora en los aspectos tecnológico y gestión institucional que permitirán mantener los consumos del agua estables bajo el escenario del crecimiento de la universidad, disminuirán la contaminación de los vertimientos e impactarán de manera positiva la evapotranspiración, como parte fundamental del retorno del agua al ambiente.

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Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix
...
Franco Sarmiento, Andrea Carolina | 2021

Introduction— The high protein content has made legumes a raw material of interest in the formulation of different agroindustrial products; the trupillo (Prosopis juliflora) tree is an easily accessible, multipurpose, wild legume that can be used in all its composition, has a high protein value and little commercial level, which is currently being wasted as it is mistakenly considered a weed and that It could be seen as a new alternative that helps in the potentialization of the food sector. Objective— This research aims to functionally characterize trupillo flour (Prosopis juliflora), obtained from leaves and seeds, to include it in a food matrix as a protein extender. Methodology— The experimental design for this research required three phases, i) obtaining, bromatological and functional characterization of leaf flour and trupillo seeds, ii) standardization of formulations for artisan sausages using trupillo flour as a protein source, and iii) bromatological and sensory characterization of the processed sausages. Results— It was found that the flours obtained preserved the characteristic odor and color of each raw material. Particularly, the seed flour presented bromatologically and functionally better protein contents (27.7%), ash (8.04%), swelling capacity (16.7 ml water / g sample), water absorption (7.89 g water / g sample) and water retention capacity (27.9 g water/g sample), for which it was selected to be included in the sausages. In the three formulations made (C, CT and T), there were variations in the color and texture of the sausages, with Formulation T standing out for presenting higher protein content (13.7%). However, consumers preferred Formulation C. Conclusions— These results allow to propose the inclusion of sausage with trupillo flour in the human diet as an alternative to traditional products.

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Mitigation of nonlinear effects using machine learning in coherent optical access networks
...
Escobar, Alejandro | 2021

Introduction— The use of coherent detection jointly with high-level modulation formats such as 16 and 64-QAM seems to be a convenient strategy to increment capacity of future optical access networks. However, coherent detection requires high complexity digital signal processing to mitigate different impairments. Objective— Mitigate signal distortions using nonsymmetrical demodulation techniques based on Machine Learning (ML) algorithms. Methodology— First, a single channel Nyquist m-QAM system at 28 and 32 Gbps was simulated in VPIDesignSuite software. Then, different signals modulated at 16 and 64-QAM were generated with different laser linewidth, transmission distances and launch powers. Two ML algorithms were implemented to carry out the demodulation of the generated signals. The performance of the algorithms was evaluated using the Bit Error Rate (BER) in terms of different system parameters as laser linewidth, transmission distance, launch power and modulation format. Results— The use of ML allowed gains up to 2 dB in terms of optical signal-to-noise ratio at a BER value of for 16-QAM and 1.5 dB for 64-QAM. Also, the use of ML showed that it is possible to use a lower cost laser (100 kHz linewidth vs 25 kHz) with a better BER performance than using conventional demodulation. Conclusions— We showed that the use of both algorithms could mitigate nonlinear effects and could reduce computational complexity for future optical access networks.

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Comparative-experimental study of different roof types in a tropical climate
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Tschiersch, Kim-Christin | 2021

Introduction— The implementation of green roofs in buildings has become increasingly common, because it is an ecological construction alternative that provides great benefits, which range from reducing air pollution to improving air conditioning inside of the buildings. Objective— This article aims to evaluate whether extensive green roofs are an energy-valuable option in a tropical climate compared to a thermoacoustic, clay tile, and concrete roof. Methodology— An experimental study was carried out in summer (December) in a tropical climate, where the internal temperature of two identical small buildings was compared except for the roof type. Both small buildings were built with a low construction standard according to buildings of families with low income in this region. Data of internal temperatures and other climatic conditions were analyzed to compare the influence of the roof type on the inner shelter temperature. Results— In these experiments, the average inner shelter temperature of green roofs was lower than the same temperature for thermoacoustic, clay tile and concrete roof and resulted in average temperature differences of 1.8°C, 0.9°C and 1.5°C, respectively (depending on environmental conditions). Conclusions— It was possible to show that the green roof has a greater thermal inertia compared to the others. However, the temperature difference between the green roof and the other roof types was in the same range as in studies conducted in other climatic regions, therefore no special benefit of the green roof has been derived in a warm-tropical climate in this study. However, the low building standard can be of great interest for a final evaluation and the authors recommend to conduct further studies.

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Submissões recentes

Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia

Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water

Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix

Mitigation of nonlinear effects using machine learning in coherent optical access networks

Comparative-experimental study of different roof types in a tropical climate

Envíos recientes

Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia

Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water

Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix

Mitigation of nonlinear effects using machine learning in coherent optical access networks

Comparative-experimental study of different roof types in a tropical climate

Repositorio Universidad de La Costa

Comunidades no DSpace

Submissões recentes

Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia ﻿

Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water ﻿

Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix ﻿

Mitigation of nonlinear effects using machine learning in coherent optical access networks ﻿

Comparative-experimental study of different roof types in a tropical climate ﻿

Envíos recientes

Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia

Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water

Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix

Mitigation of nonlinear effects using machine learning in coherent optical access networks

Comparative-experimental study of different roof types in a tropical climate

Evaluación de la contaminación por aluminio del agua para consumo humano, región central de Colombia

Environmentally sustainable universities: the Nueva Granada Campus of the Nueva Granada Military University and its relationship with water

Physicochemical and functional characterization of trupillo flour (Prosopis juliflora (Sw.) DC) and its inclusion in a food matrix

Mitigation of nonlinear effects using machine learning in coherent optical access networks

Comparative-experimental study of different roof types in a tropical climate