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Recent Submissions
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Revealing a new region of gamma-ray emission in the vicinity of HESS J1825–137
(2019-02-17)HESS J1825–137 is a bright very high-energy gamma-ray source that has been firmly established as a pulsar wind nebula (PWN), and one of the most extended gamma-ray objects within this category. The progenitor supernova ... -
Analysis of Fermi-LAT observations, UHECRs and neutrinos from the radio galaxy Centaurus B
(2019-08-20)Centaurus B (Cen B) is one of the closest and brightest radio-loud galaxy in the southern sky. This radio galaxy, proposed as a plausible candidate for accelerating ultra-high-energy cosmic rays (UHECRs), is near the ... -
HAWC and Fermi-LAT detection of extended emission from the unidentified source 2HWC J2006+341
(2020)The discovery of the TeV point source 2HWC J2006+341 was reported in the second HAWC gamma-ray catalog. We present a follow-up study of this source here. The TeV emission is best described by an extended source with a soft ... -
G279.0+1.1: a new extended source of high-energy gamma-rays
(2020)G279.0+1.1 is a supernova remnant (SNR) with poorly known parameters, first detected as a dim radio source and classified as an evolved system. An analysis of data from the Fermi-Large Area Telescope (LAT) revealing for ... -
Epidendrum scandens: an unusual new orchid species endemic to the Cordillera de Talamanca in Costa Rica
(2023)We describe and illustrate a new species of Epidendrum from the montane forests on the Cordillera de Talamanca, in Costa Rica. Epidendrum scandens is unusually among the ‘Rugosum subgroup’ of ‘Ramosum group’ in the plants ... -
Evolution of Seed Dispersal Modes in the Orchidaceae: Has the Vanilla Mystery Been Solved?
(2023)Orchid seeds are predominantly wind-dispersed, often developed within dry, dehiscent fruits that typically release millions of dust-like seeds into the air. Animal-mediated seed dispersal is a lesser-known phenomenon in ... -
A source of gamma rays coincident with the shell of the supernova remnant CTB 80
(2021)CTB 80 (G69.0+2.7) is a relatively old (50–80 kyr) supernova remnant (SNR) with a complex radio morphology showing three extended radio arms and a radio and X-ray nebula near the location of the pulsar PSR B1951+32. We ... -
The Absence of Gumfoot Threads in Webs of Early Juveniles and Adult Males of Physocyclus globosus (Pholcidae) is not Associated with Spigot Morphology
(2014-11-01)Gumfoot threads attached to the substrate may allow spiders to retain prey. These threads were recently discovered in adult females of Pholcidae spiders, and are similar to those in Theridiidae. We report for the first ... -
Probing the origin of 4FGL J0822.8–4207: cosmic ray illumination from the SNR Puppis A and the Herbig-Haro object HH219
(2021)4FGL J0822.8–4207 is a point source found in the 4FGL-DR2 catalogue by the gamma-ray observatory Fermi-LAT and has no known association. We carry out X-ray observations of 4FGL J0822.8–4207 to help understand its nature. ... -
G17.8 + 16.7: A new supernova remnant
(2021)Non-thermal radio emission is detected in the region of the gamma-ray source FHES J1723.5 − 0501. The emission has an approximately circular shape 0.8° in diameter. The observations confirm its nature as a new supernova ... -
El desarrollo Científico, Tecnológico y de Mercado del Cannabidiol (CBD)
(2023)F-GC-02 Informe de Inteligencia Competitiva y de Mercado1 Introducción Este estudio permite desarrollar inteligencia de mercado, científica y tecnológica sobre el extracto de Cannabis sativa, específicamente del ... -
Selective breeding of rats for high (HAB) and low (LAB) anxiety-related behaviour: A unique model for comorbid depression and social dysfunctions
(2023)Animal models of selective breeding for extremes in emotionality are a strong experimental approach to model psychopathologies. They became indispensable in order to increase our understanding of neurobiological, genetic, ... -
Fermi-LAT detection of G118.4+37.0: a supernova remnant in the Galactic halo seen around the Calvera pulsar
(2023)The discovery of a non-thermal radio ring of low surface brightness about one degree in diameter has been recently reported around the location in the sky of the Calvera pulsar, at a high Galactic latitude. The radio ... -
Tropical easterly waves over Costa Rica and their relationship to the diurnal cycle of rainfall
(2023-01)Using an index of tropical easterly wave (TEW) activity derived from spacetime-filtered outgoing longwave radiation, we construct composites of long-term hourly surface meteorological observations and morningtime sounding ... -
Taxonomía multifásica de hongos endófitos del orden hypocreales en rubiaceae de bosque natural de Costa Rica
(2023)Los problemas fitosanitarios relacionados al café en Latinoamérica y otras áreas en el mundo, han registrado un aumento en la frecuencia y la severidad de las enfermedades producidas por hongos como Hemileia vastatrix ó ... -
Guía de lectura de la Base de Datos para el Estudio de Inteligencia Tecnológica y Científica del Cannabidiol (CBD)
(2023)El Excel cuenta con 3 hojas, donde la primera corresponde a Artículos Científicos, la segunda a Patentes y la última a CIP detalle, las cuales son las siglas para Código Internacional de Patentes. De esta manera, en cada ... -
Evaluación del hipotético sistema de falla transcurrente este-oeste de Costa Rica
(1996)Se analizaron los siguientess criterios que ayudan a evaluar la existencia de un sistema de fallas mayor en la parte central de Costa Rica: configuración geologica del territorio costarricense, fallamiento, distribución ... -
Taxonomy and phylogeny of the genus Ganoderma (Polyporales, Basidiomycota) in Costa Rica
(2023)Ganoderma species are well recognized by their significant role in the recycling of nutrients in ecosystems, and by their production of secondary metabolites of medical and biotechnological importance. Ganoderma spp. are ... -
Establishment of cell suspension cultures of two Costa Rican Jatropha species (Euphorbiaceae).
(2013-09-01)J. curcas has been studied in different countries and some interesting agronomic, pharmacological and industrial properties have been reported. More recently, it has been considered an important alternative source for ... -
Micropropagation and genetic transformation of Spanish Cedar (Cedrela odorata L.): A Review
(2019-05)Cedrela odorata L. (Meliaceae) is a timber tree of high economic value. Currently, this species faces serious problems due to selective cutting and environmental degradation, which together have contributed to the decline ...