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Parts per Million of Propanol and Arsine as Responsible for the Poisoning of the Propylene Polymerization Reactio
(2023-09-01)
Polypropylene synthesis is a critical process in the plastics industry, where control of
catalytic activity is essential to ensure the quality and performance of the final product. In this study,
the effect of two ...
Detection of forest windthrows with bitemporal COSMO-SkyMed and Sentinel-1 SAR data
(2023-08-29)
Wind represents a primary source of disturbances in forests, necessitating an assessment of the resulting damage to ensure appropriate forest management. Remote sensing, encompassing both active and passive techniques, ...
SunspotCalc: Una aplicación basada en Web y Python para calcular la rotación diferencial del sol y su fotosfera
(2023-04-22)
En este manuscrito presentamos una aplicación web con soporte en lenguaje de programación PYTHON, REACTJS y JAVASCRIPT, libre y abierta, para el desarrollo de una actividad de enseñanza-aprendizaje de la astronomía, ...
Analysing a license plate-based vehicle restriction policy with optional exemption charge: The case in Cali, Colombia
(2023)
Several cities have restricted the use of private vehicles based on the last digit of a vehicle's license plate to reduce traffic congestion and pollution. However, the effectiveness of this measure has been questioned. ...
Abundance and distribution of cigarette butts on the sand of five touristic beaches in Latin America during the COVID-19 pandemic
(2023-07-15)
Cigarette butts (CB) and cigarette butt fibers (CBF) are highly abundant and frequent residues on beach sand.
Also, they are hazardous waste due to their significant toxicity and potential risk to the ecosystems’ biota ...
Hydropower Advantages over Batteries in Energy Storage of Off-Grid Systems: A Case Study
(2023-08-30)
Microgrids are decentralized power production systems, where the energy production and consumption are very close to each other. Microgrids generally exploit renewable energy sources, encountering a problem of storage, as ...
Analysis in circular economy research in Latin America: A bibliometric review
(2023-09-09)
Circular Economy (CE) plays a crucial role in Latin America, where the transition to new economic development models poses significant challenges. This study conducts a bibliometric analysis of CE research in the region ...
Dimethylformamide Impurities as Propylene Polymerization Inhibito
(2023-09-18)
This research study examined how the use of dimethylformamide (DMF) as an inhibitor af fects the propylene polymerization process when using a Ziegler–Natta catalyst. Several experiments
were carried out using TiCl4/MgCl2 ...
Experimental–Density Functional Theory (DFT) Study of the Inhibitory Effect of Furan Residues in the Ziegler–Natta Catalyst during Polypropylene Synthesis
(2023-09-21)
In this experimental–theoretical study, the effect of furan on Ziegler–Natta catalyst produc tivity, melt flow index (MFI), and mechanical properties of polypropylene were investigated. Through
the analysis of the global ...
Effect of the financial structure on the liquidity risk of SMEs in Cartagena as a base of project formulation
(2023-06-09)
The Liquidity Risk in Small and Medium Enterprises - SMEs in the City of Cartagena-Colombia is analyzed, based on the determination
of their Capital Structure. The variables, liquidity risk (dependent) and capital structure ...
Universidad Tecnológica de Bolívar - 2017 Institución de Educación Superior sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución No 961 del 26 de octubre de 1970 a través de la cual la Gobernación de Bolívar otorga la Personería Jurídica a la Universidad Tecnológica de Bolívar.