Browsing Ciencias básicas by Title
Now showing items 377-396 of 3122
-
Bemisia tabaci Biotype Q is present in Costa Rica
(2011)Whiteflies are an insect group that comprises multiple species and biotypes, capable of affecting crops by phloem feeding, virus transmission and promotion of fungal colonization. The distribution of these pests is worldwide. ... -
Benefits of protection on reef fish assemblages in a human impacted region in Costa Rica
(2019)In recent years, there has been a health decrease in marine ecosystems. Due to this accelerated degradation, there is a more pressing need to investigate the effectiveness of MPAs in these degraded zones. In this work, we ... -
Beyond the various contrivances by which orchids are pollinated: global patterns in orchid pollination biology
(2023)Orchidaceae show remarkable diversity in pollination strategies, but how these strategies vary globally is not entirely clear. To identify regions and taxa that are data-rich and lend themselves to rigorous analyses or are ... -
Bile salts and derivatives: Rigid unconventional amphiphiles as dispersants, carriers and superstructure building blocks
(2015)Steroidal surfactants like bile salts have a rigid amphiphilic structure significantly different from the typical head–tail one. As a result, these molecules show peculiar features in their self-assembly behavior and ... -
Bioactivity of prenylated hydroxybenzoic acids from Piper garagaranum C. DC
(2022)A bio-assay guided fractionation of Piper garagaranum C. DC. led to the isolation of two prenylated hydroxybenzoic acids (1-2) with anti-inflammatory and cytotoxic activities. The anti-inflammatory action was determined in ... -
Bioassay-guided isolation of anti-inflammatory O-sulfated withanolides from Acnistus arborescens (Solanaceae)
(2019)Bioassay-guided fractionation of Acnistus arborescens (Solanaceae) organic extract afforded two anti-inflammatory withanolides: 2,3-Dihydro-3β-O-sulfate withacnistin (1) and 2,3-Dihydro-3β-O-sulfate withaferin A (2) showing ... -
Bioavailability of Xenobiotics in the Soil Environment
(2010)When synthetic, xenobiotic compounds such as agrochemicals and industrial chemicals are utilized, they eventually reach the soil environment where they are subject to degradation, leaching, volatilization, sorption, and ... -
Biodegradation of Pharmaceuticals by Fungi and Metabolites Identification
(2012-01-01)Pharmaceutical compounds comprise a widely employed group of therapeutic agents now considered as emerging micropollutants. This chapter summarizes the state of the art in the degradation of pharmaceuticals by fungi ... -
Biodegradation of Polybrominated Diphenyl Ethersin Liquid Media and Sewage Sludge by Trametes versicolor
(2015)Polybrominated diphenyl ethers (PBDE) are widely employed as flame retardants and constitute a group of emerging pollutants of high persistence. The degradation of different PBDE commercial mixtures (penta-, octa- and ... -
Biodiversity and density of subtidal benthos of an oceanic tropical island (a comparison within the Pacific Ocean)
(2016)The marine macrofauna of the shallow sandy bottom of Isla del Coco, Costa Rica (5°32′N-87°04′W) was assessed in April 2010. Comparisons of richness, density and diversity between levels of exposure to ocean influence were ... -
Biodiversity for Bioindustries
(1997)Biodiversity refers to the variety and variability of living material and ecological complexes in a given area and comprises species, genetic and ecosystem diversity. Biodiversity is not only the basis of life on earth, ... -
Biodiversity Prospecting: The INBio Experience
(2004)Bioprospecting is defined as the systematic search for genes, compounds, designs, and organisms that might have a potential economic use and might lead to a product development. In 1991, Costa Rica's National Institute of ... -
Bioerosion by the sea urchin Diadema mexicanum along Eastern Tropical Pacific coral reefs
(2016-07-07)Bioerosion is a natural process in coral reefs. It is fundamental to the health of these ecosystems. In the Eastern Tropical Pacific (ETP) coral reefs, the most important bioeroders are sponges, bivalves, sea urchins and ... -
Biogeographical analyses to facilitate targeted conservation of orchid diversity hotspots in Costa Rica
(2020-04-13)Aim: We conduct a biogeographical assessment of orchids in a global biodiversity hotspot to explore their distribution and occurrences of local hotspots while identifying geographic attributes underpinning diversity ... -
Biogeographical assessment of myxomycete assemblages from Neotropical and Asian Palaeotropical forests
(2017-03-16)Aim Lowland/highland and Neotropical/Asian Palaeotropical assemblages of myxomycetes were compared to test the null hypothesis that neither species diversity nor species composition differs between the two ecoregions. ... -
Biological and dosimetric evaluation of [11C]S-adenosyl methionine as a potential agent for prostate cancer diagnosis
(2018)Introduction: [11C]Choline ([11C]COL) has been widely used for prostate cancer diagnosis; however, this radiopharmaceutical is not recommended for patients with a low absolute PSA value (< 1 ng/mL) due to its limited ... -
Biología molecular del virus del rayado fino del maíz
(1986-06)A condensed report of research on the molecular biology of Maize Rayado Fino Virus is offered, along with a tentative model for the capsid structure that fits the biochemical analysis of this virus. Given the existence of ...