Vol. 26 No. 1-2 (2012)

Original scientific papers (evaluated by academic peers)

• Different aspects to consider during kiln drying of Vochysia guatemalensis Donn Sm. Wood (Cebo/Mayo)

  Róger Moya Roque, Carolina Tenorio Monge, Diana Aguilar Tovar (Author)

  5-14

  • PDF (Spanish)

• Medicinal Water? The occurrence and fate of pharmaceuticals in aquatic environments A short communication

  Ricardo Sánchez-Murillo (Author)

  15-22

  • PDF (Spanish)

• Liquid Wastes: the case of beauty parlors

  Marcela Castillo Cortés, Juana María Coto Campos, Jacqueline Herrera Núñez (Author)

  23-27

  • PDF (Spanish)

• Analysis of national chemistry olympiad in Costa Rica: achievements and challenges for young people

  Ana Rocío Madrigal, Randall Syedd León, Eric Montero, José Vega-Baudrit (Author)

  29-40

  • PDF (Spanish)

• Physico-chemical assessment of sediments of Tamarindo estuary and its tributaries, Guanacaste, Costa Rica

  Francela María Bravo Chaves, Gilberto Piedra Marín, Lilliana Piedra Castro (Author)

  41-50

  • PDF (Spanish)

• Chemical composition of rain and fog water collected in the Monteverde biological reserve

  Tatiana Vásquez Morera, Rosa Alfaro Solís, José Pablo Sibaja Brenes, Germain Esquivel Hernández, Juan Valdés González (Author)

  51-64

  • PDF (Spanish)

• Towars a chemical reagents and residues management at the teaching laboratories of the Chemistry School of the Universidad Nacional

  Ana Cristina Benavides Benavides, Xinia Vargas González, Gustavo Chaves Barboza, José Ángel Rodríguez Corrales (Author)

  65-73

  • PDF (Spanish)

• Xylose from lignocellulosic waste in the production and industrial processing of pinneaple (Ananascomusus)

  Karla Ramírez Amador, Óscar Rojas Carrillo, Patricia Alvarado Aguilar, José Vega-Baudrit (Author)

  75-89

  • PDF (Spanish)

• Antibacterial activity of the marine sponge Ircinia Campana collected at Punta Uva Limón against Staphylococcus Aureus

  Rafael Rojas Brenes, Henry Borbón Alpízar, Vanessa Bagnarello Madrigal, Rigoberto Víquez Portuguez, Roy Soto Fallas, Ilena Vega Guzmán, Jacqueline Herrera Núñez (Author)

  91-97

  • PDF (Spanish)

• Evaluating functions using tail recursion and parameter substitution

  Georges E. Alfaro Salazar (Author)

  99-112

  • PDF (Spanish)

• Sociocultural context as a facilitator of student learning of function concepts in mathematics

  Evangelina Díaz Obando, Alonso Arguedas B Alonso Arguedas B, Jorge Porras A (Author)

  113-124

  • PDF (Spanish)

• Promotion and diffusion of tha career Bachelor and Licenciature of Mathematics Teaching in rural areas of Costa Rica project: effects and results

  Jorge Arroyo Hernández, Ronny Gamboa Araya, Randall Hidalgo Mora (Author)

  125-133

  • PDF (Spanish)

• Methodological resources used by teachers in cycles I and II in basic general education in the region of Heredia, when they teach probability and statistics

  Ana Lucía Alfaro Arce, Marianela Alpízar Vargas, Edwin Chaves Esquivel (Author)

  135-151

  • PDF (Spanish)

• Didactic transposition: an example in the educative system in Costa Rica

  Cristian Alfaro Carvajal, Jesennia Chavarría Vásquez (Author)

  153-168

  • PDF (Spanish)

• The virtual class as a knowledge democratization model

  Mayela Coto Chotto, Sonia Mora Rivera (Author)

  168-178

  • PDF (Spanish)

• Computer-aided tool for the teaching of relational algebra in data base courses

  Johnny Villalobos Murillo, Steven Brenes Chavarría, Sonia Mora Rivera (Author)

  179-195

  • PDF (Spanish)

• Cómo presentar manuscritos

  Felipe Ovares (Author)

  • PDF (Spanish)