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Institution

University of Costa Rica

EducationSan José, Costa Rica
About: University of Costa Rica is a education organization based out in San José, Costa Rica. It is known for research contribution in the topics: Population & Venom. The organization has 9817 authors who have published 16781 publications receiving 238208 citations. The organization is also known as: UCR & Universidad de Costa Rica.
Topics: Population, Venom, Antivenom, Snake venom, Myotoxin


Papers
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Journal ArticleDOI
TL;DR: In this paper, a coordinate transformation which regularizes the classical Kepler problem was used to solve the hydrogen-atom case via the phase-space formulation of nonrelativistic quantum mechanics.
Abstract: Using a coordinate transformation which regularizes the classical Kepler problem, we show that the hydrogen-atom case may be analytically solved via the phase-space formulation of nonrelativistic quantum mechanics. The problem is essentially reduced to that of a four-dimensional oscillator whose treatment in the phase-space formulation is developed. Furthermore, the method allows us to calculate the Green's function for the H atom in a surprisingly simple way.

53 citations

Journal ArticleDOI
TL;DR: The ability of the immobilized Synechocystis sp.

53 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the occurrence of BHPs in Golfo Dulce, an anoxic marine fjord-like enclosure located in Costa Rica, and found that the distribution of BHT isomer in four sediment cores and a surface sediment transect closely followed the distribution for ladderane fatty acids, unique biomarkers for bacteria performing anaerobic ammonium oxidation (anammox).

53 citations

Journal ArticleDOI
TL;DR: Macrobrachium carcinus, one of the largest freshwater shrimp of the east coast of the Americas, is commercially fished in certain parts of the region as mentioned in this paper, and the reproductive biology of the species is analyzed.
Abstract: Macrobrachium carcinus, one of the largest freshwater shrimp of the east coast of the Americas, is commercially fished in certain parts of the region. We present data concerning the reproductive biology of the species, and compare findings with those published for other species of Macrobrachium. Ovigerous females were collected monthly between March 2004 and April 2005 in the San Juan River, northern Costa Rica. Egg bearing females ranged in size from 120.1 to 190.1 mm total length. Fecundity increased with female size and, up to 242,437 eggs, can be considered as high compared to other species of Macrobrachium. Average egg volume increased gradually during embryogenesis from 0.065 to 0.088 mm3, representing an overall increase of 35.4%. Eggs can be considered as small, typical for Macrobrachium species depending on brackish water to complete larval development. Reproductive output of M. carcinus varied between 4.0% and 21.0%, and was independent of female size; these values are within the range ...

53 citations

Journal ArticleDOI
TL;DR: Amniotic fluid cellular content (AFCC), especially keratinized, non-nucleated squamous epithelial cells and lanugo hair, have been detected in the fetal and neonatal ear and histological findings varied from the mere presence of AFCC to the formation of epithelialized granulation tissue.

53 citations


Authors

Showing all 9922 results

NameH-indexPapersCitations
Alberto Ascherio13646269578
Gervasio Gomez133184499695
Myron M. Levine12378960865
Hong-Cai Zhou11448966320
Edward O. Wilson10140689994
Mary Claire King10033647454
Olga Martín-Belloso8638423428
José María Gutiérrez8460726779
Cesare Montecucco8438227738
Rodolphe Clérac7850622604
Kim R. Dunbar7447020262
Paul J. Hanson7025119504
Hannia Campos6921015164
Jean-Pierre Gorvel6723115005
F. Albert Cotton66102327647
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202325
2022155
2021864
20201,009
2019894
2018834