Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks by Saint-Felix-López, Nelson, Álvarez-Deulofeu, Eduardo-Rafael, Candebat-Sánchez, Dario

“…In the investigation, two mathematical calculation models were implemented: a simplified one based on the equivalent mechanical system described by Housner in 1963 and a complex model, which integrates the finite element technique and the spectral modal analysis method with the help of the professional software SAP2000, v.22.0. When analyzing the research results, it was concluded that (1) the values ​​of periods in tanks are high due to the fluctuations of the stored fluid; (2) there is an agreement between the analytical method specified in API. 650 and computational models based on finite elements; (3) the model developed from finite elements corroborates the existence of deformations in the lower part of the tank walls, which is known as "elephant foot" and "diamond point", as well as buckling in the upper part of the sidewall of the tank caused by the effect of the waves; and (4) according to the aspect ratios considered (H/R), in which the radius tank is constant, the value of the convective period decreases as said aspect ratio decreases; becoming the less dominant impulsive mode.…”

Common Spaces in Cantiga by José Manuel Arango by Henao, Simón

“…As one of his interpreter states that Cantiga (1987) is a rewritten work of two previous poems, this paper suggests a critical review from the context of his writing to the theoretical framework regarding common spaces. The result of this research shows that Cantiga determines a poet inserted in the world plentily observed by him and then names it. …”

Characterization of the Orchidacea family: a living collection at the UPTC botanical garden. by Martín , Ana, Hernández, Rubinsten, Galvis , Manuel

“…The diversity housed in the living collection of the botanical garden is an opportunity to contribute to the conservation, protection and preservation of orchids through an educational research scenario.…”

The Role of Heuristic Factors in Investment Performance: Exploring the Market Anomalies in a Volatile Environment by Ullah Malik, Kaleem, Shaukat Malik, Muhammad, Irfan, Muhammad, Mehdi, Hussain

“…That is why it is quite important to explore and quantify the mediation mechanism of stock market anomalies in a volatile environment. For this research, the data were collected through a survey to stock investors who are actively involved in investing. …”

Elaboration and Characterization of Bricks Made with Addition of Calcined Rice Husk by Sánchez-Vásquez, Elver, Leiva-Piedra, Jorge-Luis, Monteza-Arbulú, Cesar-Augusto

“…The growing demand for construction materials, the search for sustainable and environmentally friendly alternatives, and the new vision towards a circular economy have led to the increasing use of agricultural waste to obtain new value-added materials. The present research sought to elaborate and characterize bricks manufactured with addition of different concentrations of rice husk ash (5%, 10% and 15%). …”

Design of a SDR ground station for Low-orbit satellites by Orduy Rodríguez, Jaime Enrique, Rodríguez Barón, Iván Felipe, Cubillos Chaparro, Cristian Andrés

“…In order to ensure the success of any mission, it is necessary to have control over the development of the ground segment, it does it mean, the ground stations; for this reason, and being motivated in this segment at the Fundación Universitaria Los Libertadores, it was possible to define a preliminary design to track pico and nano satellites within the amateur or university segment. Based on applied research, the generation of knowledge was sought within the institution with its application in the space sector, developing the necessary guidelines that would allow the identification of the different components for the construction of an Earth Station for small satellites. …”

Do We Perceive a Gender Gap in Careers Associated with Technologies? by Morales-Brito, Jenny, Rojas-Cabezas, Germán

“…Also, from a gender perspective, the gap is explained, considering the bias of employers as relevant. For future research, we expect to enlarge the sample and contrast the results with those provided by the national socioeconomic characterization survey.…”

Luis Enrique Osorio (1915-1930): Cultural Transfer and his Juvenile Mobility by Agudelo Ochoa, Ana María

“…The time frame of this research is between 1915, when Luis Enrique Osorio published his first work, and 1930 when he finished La novela semanal [Weekly Novel] as its editor. …”

Volatile chemical composition of Colombian Plectranthus amboinicus (Lour.) Spreng essential oil and its biocidal action against Tribolium castaneum (Herbst) by Jaramillo-Colorado, Beatriz Eugenia, Vega-Díaz, Rafael, Pino-Benítez, Cruz Nayibe

“…Spreng is an herbaceous and aromatic plant that belongs to the Lamiaceae family. In this research work, the repellent and insecticidal activity of the essential oil (EO) of P. amboinicus from the Condoto township in the department of Choco (Colombia) against the flour weevil Tribolium castaneum (Herbst) was studied. …”

Effect of temperature on the vapour fraction of heavy crude oil in hydrodynamic cavitation Vortex reactor using CFD. by R. Quiroga, González-Estrada, O. A., González Silva, G.

“…Results show that the volume of vapour increases with temperature, up to a volume of 1.507 cm3, where its main contribution is due to the Vortex effect. Further research includes the behaviour of hydrodynamic cavitation with different crude oils and operating parameters. …”

Physiological quality of cowpea bean (Vigna unguiculata L. Walp.) seed by the electrical conductivity and germination testing by Araméndiz-Tatis, Hermes, Cardona-Ayala, Carlos, Espitia-Camacho, Miguel, Peña-Salgado, Luisa, Doria-Pérez, Tatiana

“…The objective of this research was to evaluate the physiological quality of the seeds of five cowpea cultivars stored for 8-10 years. …”

Study on Croton sp. genetic diversity in the Department of Norte de Santander using the internal transcribed spacer (ITS) region of ribosomal DNA (rDNA) by Chaves-Bedoya, Giovanni

“…The Croton genus belongs to the Euphorbiaceae family, which has approximately 1,300 species, is widely distributed in tropical and subtropical regions of the world, and has a wide range of ethnobotanical and medicinal uses. The aim of this research was to study genetic variability by analyzing sequences of the internal transcribed space region (ITS1 5'-TCCGTAGGGAACCTGCGGC-3' and ITS4 5'-TCCTCCGCTTATGC-3') of ribosomal DNA (rDNA) of a Croton population from forested areas in the Department of Norte de Santander in the municipalities of Chinacota, Pamplona and El Zulia. …”

Labyrinth, Crime and Local Bestiary: Didactic Strategies to Using Traditional Narrative in the Class by Becerra Lagos, José Inocencio

“…To developing the sequence, it has made three ludic scenarios that gave value to different central aspects of legends as a literary genre: “the labyrinth of doors in the castle of crying”, “the research about the kidnap of a child”, and a kind of “local bestiary”. …”

Poetry as an Afro-Pacific Memory Stand in Los Versos de la Margarita, by Margarita Hurtado Castillo by Vivas, Julián, Amim, Valeria

“…Margarita Hurtado Castillo (1917-1992) was a great resonance box, receiver and transmitter of the sounds trapped in the eddies of marine time: she released them in poems, couplets or by telling stories like big fishing nets. This qualitative research, from a bibliographic nature, aims to characterize, from a decolonial perspective, aspects of the collective memory of the black Colombian Pacific’s communities showed in selected poems from Los Versos de la Margarita, a posthumous book by the oral narrator. …”

Analysis of the random effects estimator of a hierarchical model with heavy tailed priori distributions by Rojas Mora, Jessica Maria, Ramírez Guevara, Isabel

“…Distributions such as half -Cauchy, Scaled Beta2 (SBeta2) and Uniform are considered as alternatives by many authors to model the scale parameter. In the present research work, the behavior of the random effects estimators in a hierarchical model with a Baye- sian approach was examined. …”

The importance of Athens and Solon, for democracy and the modern state by Patiño Rojas, Jorge Enrique

“…This article collects, due to their importance for the academy, two chapters of the research on ancientGreece, which resulted in the book: Solon and the Birth of Legislative Rationality. …”

Collective recovery of history from the victims: in Colombia the others also count by González Fonseca , José Guillermo, Sánchez Riaño , Federico

“…This research seeks to provide tools for understanding the importance of the collective recovery of history in the construction of a stable peace in Colombia. …”

Amorfino as a Lyrical Genre of Oral Tradition by Pérez Martínez, Javier

“…This paper studies “copla de amor montubia” [Montubia love couplet] –better known in the Ecuadorian coast as “amorfino”. The research, regarding this type of oral lyric poetry, emphasizes in its formal and thematic characteristics. …”

Using Decision Trees to Predict Critical Reading Performance. by Timaran-Buchely, Andrea, Timarán-Pereira, Silvio-Ricardo, Hidalgo-Troya, Arsenio

“…The knowledge generated in this research is constituted in quality information to support the decision-making process of the university directives in order to improve the quality of the higher education offered in this institution.…”

Heterogeneous photocatalysis and an anaerobic biological process for leachate treatment by Becerra Moreno, Dorance, Caicedo Cáceres, Neldy Yareth, Velásquez Lázaro, Claudia Marcela, Machuca Martínez, Fiderman, Soto Verjel, Joseph Wbeimar

“…The research used a coupling heterogeneous photocatalysis (TiO2-UVsolar) and an anaerobic biological process (Specific Methanogenic Activity Test) to study the treatment of leachate from a landfill in Norte de Santander (Colombia). …”