Universidad Nacional de Costa Rica, Heredia, Costa Rica - Articles

Novelties in Campyloneurum (Polypodiaceae) from Mesoamerica (Articles)

Alexander Francisco Rojas-Alvarado

American Journal of Plant Sciences Vol.8 No.4，March 31, 2017

DOI: 10.4236/ajps.2017.84062 1,373 Downloads 2,840 Views Citations
This article belongs to the Special Issue on Bryophyte and Pteridophyte
Four New Species and Additional Distributions of Elaphoglossum Section Elaphoglossum (Dryopteridaceae) from the Neotropics (Articles)

Alexander Francisco Rojas-Alvarado

American Journal of Plant Sciences Vol.8 No.6，May 19, 2017

DOI: 10.4236/ajps.2017.86082 3,010 Downloads 3,894 Views Citations
Three New Species of Ferns (Pteridophyta) from Mesoamerica (Articles)

Alexander Francisco Rojas-Alvarado

American Journal of Plant Sciences Vol.8 No.6，May 25, 2017

DOI: 10.4236/ajps.2017.86089 3,140 Downloads 4,028 Views Citations
Serpocaulon orosiense, a New Hybrid of Serpocaulon (Polypodiaceae) from Costa Rica (Articles)

Alexander Francisco Rojas-Alvarado, Lucía Barrantes-Calvo

Open Access Library Journal Vol.8 No.11，November 8, 2021

DOI: 10.4236/oalib.1108047 49 Downloads 341 Views Citations
Two New Species of Edible Berries, One in Gaultheria L. and Other in Vaccinium L. (Ericaceae) from Costa Rica and Panama (Articles)

Alexander Francisco Rojas-Alvarado, Pablo Muñoz-Cambronero

Open Access Library Journal Vol.8 No.11，November 30, 2021

DOI: 10.4236/oalib.1108116 96 Downloads 597 Views Citations
Five New Species of Diplazium Sw. (Athyriaceae) from Nicaragua, Costa Rica and Colombia (Articles)

Alexander Francisco Rojas-Alvarado

American Journal of Plant Sciences Vol.9 No.5，April 13, 2018

DOI: 10.4236/ajps.2018.95071 636 Downloads 1,242 Views Citations
This article belongs to the Special Issue on Seedless Plants
Corrections in Recently Described Species of Ferns and Lycophytes from the Neotropics (Articles)

Alexander Francisco Rojas-Alvarado

Open Access Library Journal Vol.6 No.1，January 25, 2019

DOI: 10.4236/oalib.1105172 338 Downloads 665 Views Citations
Evaluation of a Voluntary Control Program for the Detection of Bovine Leukemia Virus Antibodies Based on Agar Gel Immunodiffusion Test in Dairy Farms in Costa Rica (Articles)

Gaby Dolz, Francine Huijsen, Carlos Jiménez, Luis L. Rodríguez

Open Journal of Veterinary Medicine Vol.5 No.12，December 11, 2015

DOI: 10.4236/ojvm.2015.512031 3,740 Downloads 4,365 Views Citations
Three New Species and New Records of Dennstaedtia Bernh. from Mesoamerica (Articles)

Alexander Francisco Rojas-Alvarado, Federico Villalobos-Brenes

Open Access Library Journal Vol.5 No.12，December 13, 2018

DOI: 10.4236/oalib.1105020 270 Downloads 618 Views Citations
Fungal Decay, Coating, Burning Properties and Change of Color of Particleboards Manufactured with Woody Biomass, Agricultural Wastes and Tetra Pak Residues (Articles)

Róger Moya, Diego Camacho, Julio Mata, Roy Soto Fallas

Journal of Biomaterials and Nanobiotechnology Vol.4 No.4，September 11, 2013

DOI: 10.4236/jbnb.2013.44042 4,205 Downloads 6,161 Views Citations
Analysis of Benzene Exposure Levels on Commuters Traveling within the Metropolitan Area of Costa Rica (Articles)

Wendy Villalobos-Gonzalez, Germain Esquivel-Hernandez, Ricardo Sanchez-Murillo, José Leonardo Corrales-Salazar, Juan Valdes-Gonzalez

Open Journal of Air Pollution Vol.4 No.1，March 24, 2015

DOI: 10.4236/ojap.2015.41005 4,557 Downloads 5,322 Views Citations
Understanding Ehrlichia canis Infections in Dogs of Costa Rica: Hematological Findings and Indicative Clinical Signs (Articles)

Alexander V. Barrantes-González, Ana E. Jiménez-Rocha, Juan José Romero-Zuñiga, Gaby Dolz

Open Journal of Veterinary Medicine Vol.6 No.11，November 30, 2016

DOI: 10.4236/ojvm.2016.611020 1,740 Downloads 3,373 Views Citations
Source Apportionment of PM2.5 in the Metropolitan Area of Costa Rica Using Receptor Models (Articles)

Jorge Herrera Murillo, Susana Rodríguez Roman, José Félix Rojas Marín, Beatriz Cardenas

Atmospheric and Climate Sciences Vol.3 No.4，October 15, 2013

DOI: 10.4236/acs.2013.34059 6,941 Downloads 9,776 Views Citations
Near Surface Carbon Dioxide and Methane in Urban Areas of Costa Rica (Articles)

Germain Esquivel-Hernández, Mario Villalobos-Forbes, Ricardo Sánchez-Murillo, Christian Birkel, Juan Valdés-González, Jan Boll

Open Journal of Air Pollution Vol.4 No.4，December 14, 2015

DOI: 10.4236/ojap.2015.44018 3,979 Downloads 5,078 Views Citations
Flexural Performance of I-Joist Fabricated with Glue-Laminated Bamboo and Gmelina arborea Plywood (Articles)

Viviana Paniagua, Róger Moya

Open Journal of Civil Engineering Vol.4 No.3，August 28, 2014

DOI: 10.4236/ojce.2014.43018 4,058 Downloads 5,271 Views Citations
Spatial and Temporal Variation of Stable Isotopes in Precipitation across Costa Rica: An Analysis of Historic GNIP Records (Articles)

Ricardo Sánchez-Murillo, Germain Esquivel-Hernández, Kristen Welsh, Erin S. Brooks, Jan Boll, Rosa Alfaro-Solís, Juan Valdés-González

Open Journal of Modern Hydrology Vol.3 No.4，October 31, 2013

DOI: 10.4236/ojmh.2013.34027 5,207 Downloads 9,020 Views Citations
Light Reflection by Cuticles of Chrysina Jewel Scarabs: Optical Measurements, Morphology Characterization, and Theoretical Modeling (Articles)

W. E. Vargas, M. Hernández-Jiménez, E. Libby, D. E. Azofeifa, C. Barboza, Á. Solis

Optics and Photonics Journal Vol.6 No.7，July 13, 2016

DOI: 10.4236/opj.2016.67017 1,736 Downloads 2,982 Views Citations
This article belongs to the Special Issue on Advance in Optical Properties of Materials
Prevalence of Psittacine Beak and Feather Disease Virus and Avian Polyomavirus in Captivity Psittacines from Costa Rica (Articles)

Gaby Dolz, Jessica Sheleby-Elías, Juan J. Romero-Zuñiga, Bernardo Vargas-Leitón, Gustavo Gutiérrez-Espeleta, Kenneth Madriz-Ordeñana

Open Journal of Veterinary Medicine Vol.3 No.4，August 12, 2013

DOI: 10.4236/ojvm.2013.34038 4,462 Downloads 7,244 Views Citations
Effect of Age at First Calving on First Lactation Milk Yield in Holstein Cows from Costa Rican Specialized Dairy Herds (Articles)

Mauren Salazar-Carranza, Gloriana Castillo-Badilla, Jaime Murillo-Herrera, Frank Hueckmann-Voss, Juan José Romero-Zúñiga

Open Journal of Veterinary Medicine Vol.4 No.9，September 10, 2014

DOI: 10.4236/ojvm.2014.49023 2,932 Downloads 4,170 Views Citations
Application of a Sulfur Removal Hydrometallurgical Process in a Lead-Acid Battery Recycling Plant in Costa Rica (Articles)

Marta Navarro-Monge, Germain Esquivel-Hernández, José Pablo Sibaja Brenes, José Carlos Mora-Barrantes, Ricardo Sánchez-Murillo, Juan Valdés-González, Pablo Bolaños-Ulloa

Open Journal of Air Pollution Vol.6 No.1，March 17, 2017

DOI: 10.4236/ojap.2017.61002 1,667 Downloads 3,365 Views Citations

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