Department of Natural History, Costa Rica National Museum, San José, Costa Rica - Articles

Gravity Is Not Attraction; It’s a Push (Space-Time Expansion Theory) (Articles)

Bernal Thalman

Open Journal of Philosophy Vol.13 No.1, February 15, 2023

DOI: 10.4236/ojpp.2023.131004 418 Downloads 11,975 Views Citations
Earth’s Oceans, Creating Tidal Bulges on Opposite Sides of the Planet (Articles)

Bernal Thalman

Open Journal of Philosophy Vol.13 No.3, August 3, 2023

DOI: 10.4236/ojpp.2023.133031 225 Downloads 1,401 Views Citations
Dark Energy in Gravity (Articles)

Bernal Thalman

Open Journal of Philosophy Vol.14 No.1, February 29, 2024

DOI: 10.4236/ojpp.2024.141016 233 Downloads 1,079 Views Citations
Gravity Is Space-Time Flow (Articles)

Bernal Thalman

Open Journal of Philosophy Vol.14 No.2, May 11, 2024

DOI: 10.4236/ojpp.2024.142025 257 Downloads 2,435 Views Citations
Variables Associated with Early Sexual Intercourse among Adolescents of Costa Rica (Articles)

Hilda Patricia Núñez-Rivas, Ileana Holst-Schumacher, Erasmo López-López

Open Journal of Social Sciences Vol.12 No.9, September 13, 2024

DOI: 10.4236/jss.2024.129006 112 Downloads 806 Views Citations
Culture and Molecular Identification of Helicobacter pylori in Drinking Water from Areas of High and Low Incidence of Gastric Cancer in Costa Rica (Articles)

Virginia Montero Campos, Alejandro Hernández Soto, Jorge Camacho Sandoval

Open Journal of Medical Microbiology Vol.4 No.4, December 31, 2014

DOI: 10.4236/ojmm.2014.44030 4,967 Downloads 6,211 Views Citations
Institutional Barriers and Promotors for Healthy Eating and Physical Activity in Costa Rican Educational Centers: A Multiple Case Study (Articles)

Natalia Campos-Saborío, Ileana Holst-Schumacher, Hilda Patricia Núñez-Rivas

Open Journal of Social Sciences Vol.13 No.12, December 30, 2025

DOI: 10.4236/jss.2025.1312036 50 Downloads 286 Views Citations
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 1,708 Downloads 3,770 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 3,395 Downloads 4,438 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 3,595 Downloads 5,040 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 139 Downloads 935 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 228 Downloads 1,388 Views Citations
The Illusion of Gender Equality and Participation of Women in Post-Conflict Somalia (2012-2022) (Articles)

Antonetta Lovejoy Hamandishe, Samuel Kale Ewusi

Open Access Library Journal Vol.12 No.6, June 20, 2025

DOI: 10.4236/oalib.1113344 63 Downloads 642 Views Citations
Socio-Demographic, Biopsychosocial and Lifestyle Behaviors Related with Eating Disorders of Children and Adolescents of Costa Rica (Articles)

Núñez-Rivas Hilda Patricia, Holst-Schumacher Ileana, Campos-Saborío Natalia

Food and Nutrition Sciences Vol.10 No.8, August 26, 2019

DOI: 10.4236/fns.2019.108073 677 Downloads 1,930 Views Citations
Violent and Risk-Taking Behaviors Associated with Intake of Energy Drinks Mixed with Alcohol and Perceptions of This Consumption among Children and Adolescents in Costa Rica (Articles)

Núñez-Rivas Hilda, Holst-Schumacher Ileana, Campos-Saborío Natalia

Food and Nutrition Sciences Vol.11 No.8, August 28, 2020

DOI: 10.4236/fns.2020.118059 673 Downloads 2,689 Views Citations
Tortuguero National Park, Costa Rica: Baseline CO₂ Emissions from Boat Tours into the Channels System (Articles)

Irene Alvarado-Van der Laat

Low Carbon Economy Vol.5 No.1, March 7, 2014

DOI: 10.4236/lce.2014.51003 5,466 Downloads 7,956 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 4,565 Downloads 6,122 Views Citations
DNA Barcodes in Fig Cultivars (Ficus carica L.) Using ITS Regions of Ribosomal DNA, the psbA-trnH Spacer and the matK Coding Sequence (Articles)

Carlos Castro, Alejandro Hernandez, Luis Alvarado, Dora Flores

American Journal of Plant Sciences Vol.6 No.1, January 13, 2015

DOI: 10.4236/ajps.2015.61011 5,560 Downloads 9,076 Views Citations
This article belongs to the Special Issue on Plant Molecular Biology
Ecotourism, Stated Preferences, a Paradox between Environmental Awareness and Environmental Actions: The Case of Monteverde, Costa Rica (Articles)

Irene Alvarado-Van der Laat

Low Carbon Economy Vol.6 No.4, December 18, 2015

DOI: 10.4236/lce.2015.64011 5,492 Downloads 7,004 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 878 Downloads 2,243 Views Citations
This article belongs to the Special Issue on Seedless Plants

First <...234 ...>Last

	customer@scirp.org
	+86 18163351462 (WhatsApp)
	1655362766
	SCIRP WeChat

All	Title	Abstract	Keywords
DOI	Author	Journal	Affiliation
ISSN	Subject

	customer@scirp.org
	+86 18163351462(WhatsApp)
	1655362766

	Paper Publishing WeChat

Browse Subjects

Publish with us

Home

About SCIRP

Service

Policies