Uniciencia - vol.35 issue2

Table of contents
Uniciencia vol.35 n.2 Heredia Jul./Dec. 2021

Artículo

	· Effect of two surfactants on in vitro permeation of butorphanol through horse nasal mucosa Velloso, María Inés; Andreetta, Héctor Alfredo; Landoni, María Fabiana · abstract in English \| Spanish \| Portuguese · text in English · English ( pdf )

	· Optimization of larval culture for the production of juvenile spotted snapper Lutjanus guttatus in Costa Rica Chacón-Guzmán, Jonathan; Carvajal-Oses, Milagro; Herrera-Ulloa, Ángel · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Multitemporal analysis of plant associations and land use changes in a high Andean locality, Puno-Peru Loza-Del Carpio, Alfredo; Taype-Huamán, Irene · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Bacterial pathogens and their antimicrobial resistance in tilapia culture in Guatemala García-Pérez, Josué; García-Pérez, Josué; Ulloa-Rojas, Juan B.; Mendoza-Elvira, Susana · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Preliminary inventory of atmospheric emissions (SO₂, NOx and TSP) from different industrial sectors in Costa Rica Alfaro-Alfaro, Daniel; Salas-Morelli, Luis; Sánchez-Mejías, Bryan; Mora-Barrantes, José; Sibaja-Brenes, José Pablo; Borbón-Alpízar, Henry · abstract in English \| Portuguese \| Spanish · text in English \| Spanish · English ( pdf ) \| Spanish ( pdf )

	· Changes in land cover in coastal erosion hotspots in the southern Caribbean of Costa Rica during the period 2005-2017 Sandoval-Murillo, Luis; Barrantes-Castillo, Gustavo · abstract in English \| Portuguese \| Spanish · text in English \| Spanish · English ( pdf ) \| Spanish ( pdf )

	· Efecto de un difusor tipo wind lens en flujo turbulento Richmond-Navarro, Gustavo; Casanova-Treto, Pedro; Hernández-Castro, Franklin · abstract in Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· An approach to didactic-mathematical knowledge of future Basic Education teachers to teach elementary mathematics Pincheira, Nataly; Vásquez, Claudia; Giacomone, Belen · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Comparing probabilities in urns: A study with primary school students Batanero, Carmen; Hernández-Solís, Luis Armando; Gea, María M.; Álvarez-Arroyo, Rocío · abstract in English \| Portuguese \| Spanish · text in English \| Spanish · English ( pdf ) \| Spanish ( pdf )

	· Knowledge of preservice elementary teachers on fractions Castro-Rodríguez, Elena; Rico, Luis · abstract in English \| Portuguese \| Spanish · text in English \| Spanish · English ( pdf ) \| Spanish ( pdf )

	· Pedagogical effectiveness in the school organizational culture and the professional learning community Mendoza Velazco, Derling José; Cejas Martínez, Magda Francisca; Cejas Martínez, Magda Francisca; Navarro Cejas, Mercedes; Flores Hinostroza, Elizeth Mayrene; Castillo Pinos, Karina Maribel · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Competencies of pre-service mathematics teachers when transforming the representations of a function De Armas, Tulio Amaya; Castellanos, Arjuna Gabriel; Pino-Fan, Luis Roberto · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Nesting of arboreal ants (Hymenoptera: Formicidae) in artificial substrates in coffee plantations in the Colombian Andes López-Dávila, Andrés Jireh; Escobar-Ramírez, Selene; Armbrecht, Inge · abstract in English \| Spanish \| Portuguese · text in English · English ( pdf )

	· Origin of color variations of thin, nano-sized layers of volcanic cinder from the Sierra Negra Volcano of the Galapagos Islands Debut, Alexis; Toulkeridis, Theofilos; Vaca, Andrea V.; Arroyo, Carlos R. · abstract in English \| Spanish \| Portuguese · text in English · English ( pdf )

	· Workload in a group of Latin American teachers during the COVID-19 pandemic Medina-Guillen, Leonardo Flavio; Quintanilla-Ferrufino, Gustavo Jared; Palma-Vallejo, Margarita; Medina Guillen, Mónica Fernanda · abstract in English \| Portuguese \| Spanish · text in English \| Spanish · English ( pdf ) \| Spanish ( pdf )

	· Structures in direct and inverse forms of a function evidenced by 7-8-year-old students Torres, María D.; Cañadas, María C.; Moreno, Antonio; Gómez, Pedro · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Argument schemes of high school students when using GeoGebra in the context of tessellations Morales Ramírez, Guadalupe; Larios Osorio, Víctor; Rubio Goycochea, Norma · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Analysis of definitions of limit provided by University students González-Flores, Yosenith; Montoro-Medina, Ana Belén; Ruiz-Hidalgo, Juan Francisco · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Suitability criteria used by future primary school teachers in the assessment of math educational videos Burgos Navarro, María; Castillo Céspedes, María José · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Socio-environmental aspects affecting water contamination in an urban area Sánchez-Gutiérrez, Rolando; Alfaro-Chinchilla, Carolina; Ledezma-Zamora, Kimberly; Hernando-Echeverría, Ligia; Mora-Aparicio, Carmen; Pérez-Salazar, Roy · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )

	· Norms that regulate the management of virtual mathematics classes in the COVID-19 context Peña, Cristina N.; Pino-Fan, Luis R.; Assis, Adriana · abstract in English \| Spanish \| Portuguese · text in Spanish · Spanish ( pdf )