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Now showing items 12944-12963 of 13979
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Species diversity and distribution of genus Pampus (Pelagiaria: Stromateidae) based on global mitochondrial data
(Universidad Nacional (Costa Rica), 2022-12-13)Due to the highly similar external morphology of the Pampus species, misidentifications frequently occur and hinder the understanding of the taxonomy and species distributions of the genus. In this study, we generated 271 ... -
Spicing up the language through idioms!
(III Congreso Internacional de Lingüística Aplicada, 2011)El lenguaje es un sistema dinámico e interactivo que facilita a las personas la expresión de ideas y necesidades en una forma directa (Read 190). A través de los años debido al dinamismo y la característica siempre creciente ... -
Spirorchiidiosis (Digenea: Spirorchiidae) and lesions associated with parasites in Caribbean green turtles (Chelonia mydas)
(British Veterinary Association, 2015)Forty-seven nesting green turtles (Chelonia mydas) were examined for parasitic pathogens. Four species of cardiovascular flukes (Digenea: Spirorchiidae), Learedius learedi, Hapalotrema postorchis, Monticellius indicum ... -
Spontaneous spawning in captivity of the first generation hatchery-produced weakfish, Cynoscion squamipinnis (Perciformes: Sciaenidae)
(Universidad Nacional (Costa Rica), 2017-01)The aim of this study was to evaluate the spontaneous spawning of the first generation of weakfish (Cynoscion squamipinnis) reared in captivity in order to conduct restocking programs and mariculture projects. Juveniles ... -
Spontaneous spawning, ontogeny and growth in captivity of Cynoscion squamipinnis
(Universidad de Costa Rica, 2016-09-03)The croakers or drums are commercial species, which have been overfished in the Nicoya Gulf, Costa Rica. This study aimed to describe, for the first time, the reproduction and the ontogeny of weakfish, Cynoscion squamipinnis ... -
Spotted rose snapper (Lutjanus guttatus) aquaculture research and development as socio-economic alternative for Costa Rican fishing communities
(2010-06-01)The spotted rose snapper (Lutjanus guttatus) is one of the main target coastal species, but landings are decreasing in quantity and size. Reports include a mean capture size of 50 cm with gill nets and 38 cm with bottom ... -
Stable isotopes reveal groundwater to river connectivity in a mesoscale subtropical watershed
(Taylor and Francis Ltd., 2021)The Corumbataí River basin (São Paulo, Brazil) has a critical situation regarding water availability due to the intensive use to support agriculture and urbanization, requiring scientific information to face water demand. ... -
Stable isotopic characterizacion of nitrate wet deposition in the tropical urban atmosphere of Costa Rica
(Springer, 2021-07-13)Increasing energy consumption and food production worldwide results in anthropogenic emissions of reactive nitrogen into the atmosphere. To date, however, little information is available on tropical urban environments where ... -
Stable isotopic characterization of nitrate wet deposition in the tropical urban atmosphere of Costa Rica
(Research Square, 2021)Increasing energy consumption and food production worldwide results in anthropogenic emissions of reactive nitrogen into the atmosphere. To date, however, little information is available on tropical urban environments where ... -
Start Up: Una nueva alternativa de emprendimiento en Costa Rica.
(Universidad Nacional, Costa Rica, 2015)Las Start Up son un tipo de emprendimiento definido a partir de tres características: búsqueda de la innovación y su correcta gestión, desarrollo ventajas competitivas para crecer en el mercado meta, y tener altas ... -
Statistical Approach to Regulation of Nanotechnology: Need, Advantages and Disadvantages
(Scientific Research Publishing (China), 2020)The need to have an express regulation covering nanotechnology has been the subject of debate in the scientific literature and identified as one of the main subsets of nanotechnology field research. However, most countries ... -
Stingless Bees in applied pollination: practice and perspectives
(Apidologie, 2006-06-22)At present, numbers of both wild and managed bee colonies are declining rapidly, causing global concern for pollination services. Stingless bees play an important ecological role as pollinators of many wild plant species ... -
Stingless bees of Costa Rica
(Springer, 2012-11-19)The keeping of stingless bees (Apidae, Meliponini) or meliponiculture is carried out in a rustic and traditional way in Costa Rica. This is an activity present in several regions of the country, especially among the ... -
Stochastic model to assess bioeconomic impact of PRRS on pig farms in Costa Rica
(Elsevier, 2023-09-24)Despite the economic importance of PRRS and its high prevalence in Costa Rica, there are no studies on the bioeconomic impact of the disease in the country or, even, in Central America. Such studies are essential in finding ... -
Stock de carbono en el bosque natural y en sitios de regeneración asistida en la Estación Biológica Osa Verde y su aporte a la mitigación del cambio climático
(Universidad Nacional, Costa Rica, 2022-08)Los bosques desempeñan un papel importante en el ciclo del carbono, al presentar degradación estos desfavorecen la capacidad para almacenar carbono en la vegetación y aumentan las emisiones. Esta investigación tuvo como ... -
Strain diversity of Rickettsia amblyommatis in ticks infesting birds in the North Huetar conservation area of Costa Rica
(Elsevier, 2019-06-10)Although the presence of rickettsial agents in ticks infesting wild birds in Costa Rica has been recently reported, information on strain diversity is limited to selected rickettsial species. In order to mine deeper into ... -
Strategic priorities and competitiveness of businesses operating in different entrepreneurial ecosystems: a benefit of the doubt (BOD) analysis
(Emerald Group Holdings Ltd., 2021-05-05)Este estudio evalúa la relación entre el ecosistema empresarial y la competitividad empresarial. El estudio utiliza una muestra de 348 empresas manufactureras y de servicios empresariales intensivos en conocimiento que ... -
Strategies for learning vocabulary in and outside the classroom
(Portal de Revistas Académicas UCR, 2019-09-12)An important part of learning a language is acquiring vocabulary in or-der to apply it to the other aspects that are studied. Language teach-ers can aid students in upgrading their lexical information ... -
Strategy of bioremediation in recirculating aquaculture systems using constructed microbial mats
(Journal of Chemical, Biological and Physical Sciences, 2014-11-30)Due to strict international standards, every day there is greater interest in developing environmentally sound treatment systems in aquaculture facilities that can remove contaminants from effluent and allows for the reuse ...
