Vol. 35 No. 2 (2021): Uniciencia. July-December, 2021

Published: 2021-07-31

Original scientific papers (evaluated by academic peers)

  • Effect of two surfactants on in vitro permeation of butorphanol through horse nasal mucosa

    DOI: https://doi.org/10.15359/ru.35-2.1
    María Inés Velloso, Héctor Alfredo Andreeta, María Fabiana Landoni (Author)
    1-9

  • Optimization of larval culture for the production of juvenile spotted snapper Lutjanus guttatus in Costa Rica

    DOI: https://doi.org/10.15359/ru.35-2.2
    Jonathan Chacón-Guzmán, Milagro Carvajal-Oses, Ángel Herrera-Ulloa (Author)
    1-17

  • Multitemporal analysis of plant associations and land use changes in a high Andean locality, Puno-Peru

    DOI: https://doi.org/10.15359/ru.35-2.3
    Alfredo Loza-Del-Carpio, Irene Taype-Huamán (Author)
    1-19

  • Bacterial pathogens and their antimicrobial resistance in tilapia culture in Guatemala

    DOI: https://doi.org/10.15359/ru.35-2.4
    Josué García-Pérez, Juan B. Ulloa-Rojas, Susana Mendoza-Elvira (Author)
    1-14

  • Preliminary inventory of atmospheric emissions (SO2, NOx and TSP) from different industrial sectors in Costa Rica

    DOI: https://doi.org/10.15359/ru.35-2.5
    Daniel Alfaro-Alfaro, Luis Salas-Morelli, Bryan Sánchez-Mejías, José Mora-Barrantes, José Pablo Sibaja-Brenes, Henry Borbón-Alpízar (Author)
    1-13

  • Changes in land cover in coastal erosion hotspots in the southern Caribbean of Costa Rica during the period 2005-2017

    DOI: https://doi.org/10.15359/ru.35-2.6
    Luis Sandoval-Murillo, Gustavo Barrantes-Castillo (Author)
    1-23

  • Effect of a Wind Lens diffuser on turbulent flow

    DOI: https://doi.org/10.15359/ru.35-2.7
    Gustavo Richmond-Navarro, Pedro Casanova-Treto, Franklin Hernández-Castro (Author)
    1-15

  • Nesting of arboreal ants (Hymenoptera: Formicidae) in artificial substrates in coffee plantations in the Colombian Andes

    DOI: https://doi.org/10.15359/ru.35-2.13
    Andrés Jireh López-Dávila, Selene Escobar-Ramírez, Inge Armbrecht (Author)
    1-17

  • Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands

    DOI: https://doi.org/10.15359/ru.35-2.14
    Alexis Debut, Theofilos Toulkeridis, Andrea V. Vaca, Carlos R. Arroyo (Author)
    1-13

  • Socio-environmental aspects affecting water contamination in an urban area

    DOI: https://doi.org/10.15359/ru.35-2.20
    Rolando Sánchez-Gutiérrez, Carolina Alfaro-Chinchilla, Kimberly Ledezma-Zamora, Ligia Hernando-Echeverría, Carmen Mora-Aparicio, Roy Pérez-Salazar (Author)
    1-20

  • Workload in a group of Latin American teachers during the COVID-19 pandemic

    DOI: https://doi.org/10.15359/ru.35-2.15
    Leonardo Flavio Medina-Guillen, Gustavo Jared Quintanilla-Ferrufino, Margarita Palma-Vallejo, Mónica Fernanda Medina Guillen (Author)
    1-13

  • An approach to didactic-mathematical knowledge of future Basic Education teachers to teach elementary mathematics

    DOI: https://doi.org/10.15359/ru.35-2.8
    Nataly Pincheira, Claudia Vásquez, Belen Giacomone (Author)
    1-18

  • Comparing probabilities in urns: A study with primary school students

    DOI: https://doi.org/10.15359/ru.35-2.9
    Luis Armando Hernández-Solís, Carmen Batanero, María M. Gea, Rocío Álvarez-Arroyo (Author)
    1-18

  • Knowledge of preservice elementary teachers on fractions

    DOI: https://doi.org/10.15359/ru.35-2.10
    Elena Castro-Rodríguez, Luis Rico (Author)
    1-17

  • Pedagogical effectiveness in the school organizational culture and the professional learning community

    DOI: https://doi.org/10.15359/ru.35-2.11
    Derling José Mendoza Velazco, Magda Francisca Cejas Martínez, Mercedes Navarro Cejas, Elizeth Mayrene Flores Hinostroza, Karina Maribel Castillo Pinos (Author)
    1-15

  • Competencies of pre-service mathematics teachers when transforming the representations of a function

    DOI: https://doi.org/10.15359/ru.35-2.12
    Tulio Amaya De Armas, Arjuna Gabriel Castellanos, Luis Roberto Pino-Fan (Author)
    1-15

  • Structures in direct and inverse forms of a function evidenced by 7–8-year-old students

    DOI: https://doi.org/10.15359/ru.35-2.16
    María D. Torres, María C. Cañadas, Antonio Moreno, Pedro Gómez (Author)
    1-16

  • Argument schemes of high school students when using GeoGebra in the context of tessellations

    DOI: https://doi.org/10.15359/ru.35-2.17
    Guadalupe Morales Ramírez, Víctor Larios Osorio, Norma Rubio Goycochea (Author)
    1-18

  • Analysis of definitions of limit provided by University students

    DOI: https://doi.org/10.15359/ru.35-2.18
    Yosenith González-Flores, Ana Belén Montoro-Medina, Juan Francisco Ruiz-Hidalgo (Author)
    1-20

  • Suitability criteria used by future primary school teachers in the assessment of math educational videos

    DOI: https://doi.org/10.15359/ru.35-2.19
    María Burgos Navarro, María José Castillo Céspedes (Author)
    1-17

  • Norms that regulate the management of virtual mathematics classes in the COVID-19 context

    DOI: https://doi.org/10.15359/ru.35-2.21
    Cristina N. Peña, Luis R. Pino-Fan, Adriana Assis (Author)
    1-20