Vol 10 No 2

UNED Research Journal

233-240

First pages

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Diana Herrero Villareal, Yency Calderón Badilla, Carmen Andrés Jiménez

241-246

New model for Physics tutorials and its effect on student performance at a distance university in Costa Rica

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Carmen Andrés Jiménez, Jacqueline Alfaro Azofeifa

247-256

Competency level of teachers in the Agroindustry chair in a distance university

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Ángel Madrigal-Valverde, Gabriel Garbanzo-León

257-266

Use of industrial waste in prenursery stage of oil palm (Elaeis guineensis, Arecaceae) production: growth and nutrient uptake

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Ebube Charles Amaechi, onyinye Mkpola Ukpai, Carmelita Chima Ohaeri, Uzoamaka Blessing Ejike, Ozioma Prisca Irole-Eze, Onyekachi Egwu, Chidiogo Comfort Nwadike

267-272

Distribution and seasonal abundance of Anopheline mosquitoes and their association with rainfall around irrigation and non-irrigation areas in Nigeria

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Oscar Leone, Soledad Valdecantos, Virginia Martínez

273-282

Histopathological markers of environmental stress in the fish Odonthestes bonariensis (Atheriniformes, Atherinopsidae) in two reservoirs of Argentina

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Macario González, Ángel Sosa-Bartuano, Julián Monge-Nájera

283-284

A velvet worm (Onychophora: Peripatidae) feeding on a free ranging spider in Sierra Llorona, Panama

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Abass Toba Anifowoshe, Oluyinka Ajibola Iyiola, Temitope Fatima Olafimihan, Segun Olayinka Oladipo, Sunday Frank Yakubu, Thuwaibat Oyiyoza Abubakar, Rukayat Ifedolapo Bakare, Kehinde Monica Akinseye, Faoziyat Adenike Sulaiman

285-295

In vivo enzyme activity and induction of DNA damage in Swiss albino male mice by automobile waste leachate

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Mauricio M. García R., Jesús A. Camacho M., Nedy C. Poleo S.

296-303

The genus Liocanthydrus in Venezuela (Coleoptera: Noteridae) with description of two new species

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Mauricio M. García R.

304-329

The genus Crenitulus in Venezuela (Hydrophilidae: Chaetarthriinae: Anacaenini) with description of twelve new species

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Fabricio Camacho Céspedes, Lidieth Uribe Lorío, Quint Newcomer, Karen Masters, Maureen Kinyua

330-341

Bio-optimization of compost with cultures of mountain microorganisms (MM) and digested sludge from bio-digester (LDBIO)

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Esteban Salazar-Acuña, Yesenia López-García

342-352

Aula en el Bosque, an environmental education program for the Costa Rican tropical forest: effect on students and teacher opinions

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Patricia Oreamuno Fonseca, José Eladio Monge Pérez

353-361

Maize landraces of Guanacaste, Costa Rica: grain characterization

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Hermes R. Alvarado-Montero, Carmen Monge-Montero, María Sol Vargas, Giselle Lutz, Julio F. Mata-Segreda

362-367

Absence of a molecular structural effect on the thermodynamic properties of several biodiesel materials

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José Bernal Azofeifa Bolaños, German Rivera Coto, Amelia Paniagua Vásquez, Roberto Cordero Solórzano

368-378

Morphogenetic responses of cuttings and in vitro plants of Vanilla planifolia (Orchidaceae) during initial development in greenhouse and agroforestry systems

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Onyekachi Egwu, Carmelita C. Ohaeri, Ebube C. Amaechi, Collins N. Ehisianya

379-385

Distribution and abundance of mosquito larvae in Ohafia, Abia State, Nigeria

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Alejandro Solórzano

386

Predation of the scorpion Centruroides bicolor by the Scorpion Eater Snake, Stenorrhina degenhardtii (Squamata: Dipsadidae).

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Esteban Pérez López, Diana Carlina Alvarado Rodriguez

387-396

Quantification by atomic absorption of Cu, Fe and Zn in distilled alcohol and water

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Javier Monge, Carol Sánchez

397-403

Composition of the community, population structure, reproductive status and habitat use of rodents in a poultry farm in Costa Rica

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Francisco S. Álvarez, Derick Herrerea, Arturo Angulo

404-408

First record of the highfin goby Gobionellus oceanicus (Gobiiformes: Gobiidae) in Costa Rican freshwaters

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María José Chassoul Acosta, Cindy Rodríguez Arias

409-415

Pollution and reduction of the El Laguito reservoir, Costa Rica, by urban waters: survey and physical-chemical properties

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Irma Gutiérrez-Sigueros, Carlos A. Cuenca-Soria, Leonardo I. Navarro-Angulo, Emilio J. Maldonado-Enríquez, Carolina E. Melgar-Valdes, Alfonso Castillo-Domínguez

416-421

Optimal time and dose of fluoxymesterone, for masculinization of Mayan fish Cichlasoma urophthalmus (Percidae: Cichlidae)

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Jose Pablo Gonzáles Blanco, Rodolgo WingChing-Jones

422-427

Production and reproduction of cows; Holstein, Jersey and their crossbreed, in five locations of Costa Rica

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Grethel Solano Mora, Rodolfo WingChing-Jones

428-434

Herd structure, and nutritional, sanitary, reproductive and environmental management of Iberoamerican horses in Costa Rica.

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Daniela Vargas-Sanabria, Carlos Campos-Vargas