Vol. 10 No. 2 (2018)

December 2018

Published: 2018-09-21

Articles

First pages

UNED Research Journal

233-240
- PDF (Español (España))
DOI: https://doi.org/10.22458/urj.v10i2.2165
New model for Physics tutorials and its effect on student performance at a distance university in Costa Rica

Diana Herrero Villareal, Yency Calderón Badilla, Carmen Andrés Jiménez

241-246
DOI: https://doi.org/10.22458/urj.v10i2.2155
Competency level of teachers in the Agroindustry chair in a distance university

Carmen Andrés Jiménez, Jacqueline Alfaro Azofeifa

247-256
DOI: https://doi.org/10.22458/urj.v10i2.2156
Use of industrial waste in prenursery stage of oil palm (Elaeis guineensis, Arecaceae) production: growth and nutrient uptake

Ángel Madrigal-Valverde, Gabriel Garbanzo-León

257-266
DOI: https://doi.org/10.22458/urj.v10i2.2157
Distribution and seasonal abundance of Anopheline mosquitoes and their association with rainfall around irrigation and non-irrigation areas in Nigeria

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

267-272
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- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.2158
Histopathological markers of environmental stress in the fish Odonthestes bonariensis (Atheriniformes, Atherinopsidae) in two reservoirs of Argentina

Oscar Leone, Soledad Valdecantos, Virginia Martínez

273-282
DOI: https://doi.org/10.22458/urj.v10i2.1909
A velvet worm (Onychophora: Peripatidae) feeding on a free ranging spider in Sierra Llorona, Panama

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

283-284
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- HTML
- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.2159
In vivo enzyme activity and induction of DNA damage in Swiss albino male mice by automobile waste leachate

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
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- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.1938
The genus Liocanthydrus in Venezuela (Coleoptera: Noteridae) with description of two new species

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

296-303
DOI: https://doi.org/10.22458/urj.v10i2.2161
The genus Crenitulus in Venezuela (Hydrophilidae: Chaetarthriinae: Anacaenini) with description of twelve new species

Mauricio M. García R.

304-329
DOI: https://doi.org/10.22458/urj.v10i2.2162
Bio-optimization of compost with cultures of mountain microorganisms (MM) and digested sludge from bio-digester (LDBIO)

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

330-341
DOI: https://doi.org/10.22458/urj.v10i2.2163
Aula en el Bosque, an environmental education program for the Costa Rican tropical forest: effect on students and teacher opinions

Esteban Salazar-Acuña, Yesenia López-García

342-352
DOI: https://doi.org/10.22458/urj.v10i2.2164
Maize landraces of Guanacaste, Costa Rica: grain characterization

Patricia Oreamuno Fonseca, José Eladio Monge Pérez

353-361
DOI: https://doi.org/10.22458/urj.v10i2.1956
Absence of a molecular structural effect on the thermodynamic properties of several biodiesel materials

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

362-367
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- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.1988
Morphogenetic responses of cuttings and in vitro plants of Vanilla planifolia (Orchidaceae) during initial development in greenhouse and agroforestry systems

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

368-378
DOI: https://doi.org/10.22458/urj.v10i2.1995
Distribution and abundance of mosquito larvae in Ohafia, Abia State, Nigeria

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

379-385
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- HTML
- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.2166
Predation of the scorpion Centruroides bicolor by the Scorpion Eater Snake, Stenorrhina degenhardtii (Squamata: Dipsadidae).

Alejandro Solórzano

386
DOI: https://doi.org/10.22458/urj.v10i2.2167
Quantification by atomic absorption of Cu, Fe and Zn in distilled alcohol and water

Esteban Pérez López, Diana Carlina Alvarado Rodriguez

387-396
DOI: https://doi.org/10.22458/urj.v10i2.1998
Composition of the community, population structure, reproductive status and habitat use of rodents in a poultry farm in Costa Rica

Javier Monge, Carol Sánchez

397-403
DOI: https://doi.org/10.22458/urj.v10i2.2168
First record of the highfin goby Gobionellus oceanicus (Gobiiformes: Gobiidae) in Costa Rican freshwaters

Francisco S. Álvarez, Derick Herrerea, Arturo Angulo

404-408
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- EPUB
DOI: https://doi.org/10.22458/urj.v10i2.2169
Pollution and reduction of the El Laguito reservoir, Costa Rica, by urban waters: survey and physical-chemical properties

María José Chassoul Acosta, Cindy Rodríguez Arias

409-415
DOI: https://doi.org/10.22458/urj.v10i2.2006
Optimal time and dose of fluoxymesterone, for masculinization of Mayan fish Cichlasoma urophthalmus (Percidae: Cichlidae)

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

416-421
DOI: https://doi.org/10.22458/urj.v10i2.2170
Production and reproduction of cows; Holstein, Jersey and their crossbreed, in five locations of Costa Rica

Jose Pablo Gonzáles Blanco, Rodolgo WingChing-Jones

422-427
DOI: https://doi.org/10.22458/urj.v10i2.2171
Herd structure, and nutritional, sanitary, reproductive and environmental management of Iberoamerican horses in Costa Rica.

Grethel Solano Mora, Rodolfo WingChing-Jones

428-434
DOI: https://doi.org/10.22458/urj.v10i2.2172
A wildfires vulnerability model for Guanacaste Conservation Area, Costa Rica

Daniela Vargas-Sanabria, Carlos Campos-Vargas

435-446
DOI: https://doi.org/10.22458/urj.v10i2.2173
Neighbors’ opinion on the use of a farm acquired by a public university for socio-environmental purposes: the case of Los Llanos, Costa Rica

Verónica Bonilla Villalobos

447-454
DOI: https://doi.org/10.22458/urj.v10i2.2174
Impact and biorefinery opportunities for agricultural waste of the cultivation of pineapple (Ananas comosus) in Costa Rica

Rodolfo Antonio Hernández Chaverri, Lilia Arely Prado Barragán

455-468
DOI: https://doi.org/10.22458/urj.v10i2.2059
Antimicrobial activity evaluation of residual orange oil

Dolores Castañeda-Antonio, Antonio Rivera-Tapia, Esther Choy Flores, Ricardo Munguía-Pérez, Roberto Portillo-Reyes, Jesús Muñoz

469-474
DOI: https://doi.org/10.22458/urj.v10i2.2175

Vol. 10 No. 2 (2018)

Articles

First pages

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

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

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

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

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

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

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

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

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

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

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

Maize landraces of Guanacaste, Costa Rica: grain characterization

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

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

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

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

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

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

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

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

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

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

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

A wildfires vulnerability model for Guanacaste Conservation Area, Costa Rica

Neighbors’ opinion on the use of a farm acquired by a public university for socio-environmental purposes: the case of Los Llanos, Costa Rica

Impact and biorefinery opportunities for agricultural waste of the cultivation of pineapple (Ananas comosus) in Costa Rica

Antimicrobial activity evaluation of residual orange oil

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