Artículos Científicos


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  • Ítem
    Relationship of Physiographic Position to Physicochemical Characteristics of Soils of the Flooded-Savannah Agroecosystem, Colombia.
    (Facultad de Medicina Veterinaria y Zootecnia, Universidad Cooperativa de Colombia, 2023-01-16) Salamanca - Carreño, Arcesio; Vélez-Terranova, Mauricio; Vargas-Corzo, Oscar Mauricio; Pérez-López, Otoniel; Castillo-Pérez, Andrés Fernando; Parés-Casanova, Pere M.
    Savannah floodplains are a natural agroecosystem located in the eastern plains of Colombia, with soils considered to be of low fertility. This assumption has not been rigorously validated by direct experimental studies. The aim of the study was to analyze the soils’ physicochemical characteristics of the “banks” and “lows”, which are physiographic positions, from the floodplain savannah in Arauca, Colombia. Soil samples were collected in “low” (n = 14) and “bank” (n = 15) physiographic positions. For each soil sample, the following chemical variables were determined: pH, organic carbon (OC), total nitrogen (TN), P, K, Ca, Mg, Na, exchange acidity, cation-exchange capacity (CEC), Fe, Cu, Mn, Zn and B, and physical variable (texture). The Wilcoxon non-parametric test (Mann–Whitney) was applied for the comparison of the soil’s physicochemical variables in each physiographic position (p < 0.05). The highest values for each variable analyzed correspond to the physiographic position of “low” (p < 0.05). The pH, T.N., Na, K and B were not statistically significant (p > 0.05). The physiographic positions of “bank” and “low” of floodplain savannah presented low levels of most nutrients, with slightly higher values in the “low” physiographic position. Corrective measures must be applied to improve the nutritional values of savannah soils and, consequently, the productivity of native forages. Despite these deficiencies, the vegetation cover is given by very well-adapted native grasses, reflecting the conditions of said agroecosystem.
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    Simulation of different biorefinery configuration including environmental, technical and economic assay using sugarcane bagasse
    (Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Coral Medina, Jesús David; Bolaños Alomia, Fabio; Magalhaes, Antonio; Julio, de Carvalho; Adenise, Woiciechowski; Carlos, Soccol
    Due to growing environmental concerns mainly related to non-renewable fuels and high added-value chemicals, new solutions should reduce greenhouse gas emissions. Biorefineries, which use lignocellulosic biomass as raw material, emerges as a promising alternative to replace fossil fuels and to avoid competition between food and fuel production for arable land and drinking water. Sugarcane is one of the most harvested crops in the world, mainly in the equatorial zone. One tonne of processed cane generates between 300 and 400 kg of bagasse. This work proposes a biorefinery configuration for the co-production of ethanol, xylitol, lignin, and cellulose acetate, analyzing two different scenarios in the context of low sugarcane availability. The analysis included the deter- mination of mass, total capital investment, total manufacturing costs, CO2 footprint, and water consumption. The cellulose acetate, ethanol, and xylitol production were economically viable only if lignin is considered a product. Positive net income, with return on investment in at least ten years, was achieved. Based on the environmental assessment, the carbon capture capacity is about 400 kg per tonne of sugarcane included in the process was determined
  • Ítem
    Bioeconomy and biofuels: the case of sugarcane ethanol in Brazil
    (Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Susan, Karp; Jesus David, Coral Medina; Luiz, Letti; Adenice, Woiciechowski; Julio, de carvalho; Caroline, Schmitt; Carlos , Soccol
    Brazilian bioethanol is one of the most prominent biofuels produced on a large scale, representing 30% of the global fuel ethanol production share. Around 8.6 billion gallons were produced in 2019, second only to the US fuel ethanol production in the same period (15.8 billion gallons). Obtained from sugarcane in a highly energy-efficient process, the biofuel, which can be used in Brazil as 100% ethanol (hydrated, minimum mass content of 92.5%) or in a volume proportion of 27% (anhydrous ethanol) in common gasoline, has contributed to the reduction of oil dependency and CO2 emissions, as well as to the development of an important economic sector. Pioneer biofuel policies and important advances in science and technology led to the establishment of a 46% renewable energy matrix. In this manuscript, an overview of the impacts of ethanol production and utilization will be given, with respect to environmental and socio-economic concerns. The public policies and some technical aspects of sugarcane and ethanol production and energy cogeneration will be reviewed and discussed. © 2021 Society
  • Ítem
    A critical techno-economic analysis of coffee processing utilizing a modern fermentation system: Implications for specialty coffee production
    (Universidad Cooperativa de Colombia, campus Pasto. Ingeniería Industrial, 2021) Coral Medina, Jesus David; Magalhaes, Antonio; Dao Pedro, de Carvalho Neto; Gilberto, Melo Pereira; Alexandre , da Silva; Julio, de carvalho; Carlos Ricardo, Soccol
    Fermentation is an important step in coffee processing which promotes the removal of mucilage adhering to the fruits. This process has a direct impact on the coffee quality, and the use of bioreactors and starter cultures has been suggested for process control. In this study, a techno-economic analysis was performed to assess the investment costs and economic performance of the inclusion of a stirred tank bioreactor (STB) model and starter cultures into a coffee processing plant. The total capital investment and production costs for a 45-ton capacity coffee farm operating with 2 STB were US$ 1 million and 0.74 $/kg higher, respectively, than the conventional processing using open tanks. The main factors for rising costs included the implementation of bioreactors (73% of the equipment costs) and starter cultures (88% of the production costs). However, the modern fermentation system (STB with the use of starter cultures) enables the production of specialty coffee beverages with scores among 85.5 and 91.5, which can be sold at 15.50 and 40.92 $/kg, respectively—more than sixteen times the estimated price for commodity coffee. Thus, the techno-economic analysis showed a viable and extremely favorable scenario, providing the economic support for the modernization of coffee fermentation and to value co-creation in the specialty coffee chain
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    Estrategia pedagógica para la enseñanza de la Constitución Política en la construcción de competencias ciudadanas en Vista Hermosa, Meta, Colombia
    (Universidad Cooperativa de Colombia campus Villavicencio Derecho, 2022-12-20) Carrillo, Yudy A.; Carrillo, Yudy A.; Marin, Laura M.
    The objective of this study was to create a pedagogical strategy for the teaching of the Political Constitution of Colombia, which would contribute to the construction of citizenship competencies in the children of the Municipality of Vista Hermosa, Meta, which, before the peace process of the year 2016, suffered directly the violence of armed groups outside the law. Method: through the cuadernia platform, which has a creative commons license, recreational activities were developed to learn the principles and rights enshrined in the 1991 Political Constitution. 25 students from the fourth and fifth grade of elementary school from the Los Centauros Educational Center participated. La Esperanza headquarters, between 9 and 12 years old. Results: it was demonstrated that through the digital platform and the activities designed, the children learned basic constitutional concepts and an useful tool for teaching the Political Constitution was given to the teachers of this region. Conclusion: The pedagogical strategy used can be replicated in other regions of Colombia, mainly in this time of pandemic, since it does not require internet and contributes to compliance with article 41 of the Constitution.
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    Automedicación en estudiantes de la Sede Neiva de la Universidad Cooperativa de Colombia
    (Universidad Cooperativa de Colombia, Facultad de Ciencias Sociales, Psicología, Neiva, 2019-01-01) Rubiano-Daza, Henry; Ortiz, Claudia Patricia; Delgado, Daniel Ricardo; Calderón Ospina, Carlos Alberto; García Rojas, Claudia Lorena; Fúnez David, Oscar David; Ortiz, Claudia Patricia; Rubiano Daza, Henry
    Self-medication is a dangerous practice with consequences including masking of disease, adverse reactions to medications, drug interaction, resistance to certain types of therapeutic agents and drug dependence. The World Health Organiza-tion has considered the possibility of educating population in practices of respon-sible self-medication, pointing at the pharmacist as a key figure in this educational process. In the present work we have analyzed the self-medication conducts of 600 surveyed college students of the Universidad Cooperativa de Colombia Sede Neiva (UCC). The overall results of the survey have been analyzed; we have also divided the surveyed population in subgroups of: a) Academic program and b) Sociodemo-graphic variables. Results indicate that self-medication is a common practice among college students of UCC, and that it is not always practiced according to WHO recommendations for responsible, safe self-medication.
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    Conocimiento preventivo y su práctica entre la población de Colombia hacia la enfermedad por Coronavirus (COVID-19): una perspectiva de género
    (Universidad Cooperativa de Colombia, Facultad de Ciencias Sociales, Psicología, Neiva, 2020-11-03) Rubiano-Daza, Henry; Rivera Diaz, Paola A; Ortiz, Claudia Patricia; Hoyos Armero, Diana Patricia; Quintero Quimbaya, Juan Camilo; Ortiz, Claudia Patricia
    This study investigates the existing knowledge of covid-19 among both genders and a likely use of it in practice to combat COVID-19. Cross sectional study with an online survey and data was collected from Colombia, through a structured, self-design validated questionnaire was created based on the World Health Organiza-tion (WHO) general public advice towards COVID-19 prevention. This study has employed snow-ball sampling technique, counted on 445 participants (46.5% male and 53.5% female). This study has found out that women not only carry better knowledge, but their practicing behavior is far better than their male counterparts. Although the results between men and women are very similar, the question about staying at home is quite conclusive in favor of women, who are more responsible. Finally his study proves that women are on a less risk in comparison to men on the basis of prevention practices exercised better as the prevailing statistics indicate. This study highlighted the notion further that women are less conducive to infection of COVID-19 due to their better practicing behavior than men
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    Does high sugar intake really alter the oral microbiota?: A systematic review
    (Universidad Cooperativa de Colombia, 2022-08-09) Universidad Cooperativa de Colombia; Angarita-Díaz, María del Pilar; Fong, Cristian; Claudia, Bedoya-Correa; Claudia, Cabrera-Arango; Clinical and Experimental Dental Research
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    Male Same-sex Couples and Surrogate Motherhood: At a Crossroads
    (Universidad Cooperativa de Colombia, Bogotá, Colombia, 2022-12-01) Molina Ricaurte, Carlos Jesús; Torres Buelvas, Jaime Elías
    Surrogate motherhood is a practice that is increasingly standing out from the already known forms of reproduction, primarily because of its evolution in such a short period. These fast paced changes entail a truly complex reality for the practice that requires the attention of bioethics, law, and politics. At present, surrogate motherhood is a valid option for, among others, male same-sex couples who wish to be parents. However, legal and economic barriers that bring about inequity and injustice remain. Therefore, it becomes necessary to analyse and synthesise these topics.
  • Ítem
    Barriga de aluguel: desafios para o direito em um mundo globalizado
    (Universidad Cooperativa de Colombia. Facultad de Derecho. Bogotá, Colombia, 2022-11-16) Molina Ricaurte, Carlos Jesús