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Differences in plasmatic butyrylcholinesterases (BChE) values between Pacific and Caribbean populations of terciopelo (Bothrops asper) in Costa Rica
(2019)The terciopelo (Bothrops asper) inhabits human-modified environments such as agricultural areas, becoming more prone to be exposed to organophosphate insecticides. These chemicals can inhibit plasmatic butyrylcholinesterases ... -
Differences in web features between two sympatric Leucauge species (Araneae: Tetragnathidae) suggest a trade-off in prey capture strategy
(2021)The design of orb webs is affected by multiple abiotic (e.g., wind, available space), biotic (e.g., prey availability, predation), and species specific (e.g., spider size) factors. Thus, some features of each spider web ... -
Different Messages are Transmitted by Individual Duet Contributions and Complete Duets in a Species with Highly Overlapped Duets
(2018)Background: Duet function hypotheses have been mostly studied in bird species that produce duets with male and female solo songs. However, in order to understand if patterns of duet function are similar across all duetting ... -
Differential volatile organic compound expression in the interaction of Daldinia eschscholtzii and Mycena citricolor
(2023)Fungi exhibit a wide range of ecological guilds, but those that live within the inner tissues of plants (a.k.a. endophytes) are particularly relevant due to the benefits they sometimes provide to their hosts, such as ... -
Differentiation in reproductive traits of geminatemangrove crabs of the genus Aratus (Decapoda: Brachyura)across the Central American Isthmus
(2016)The mangrove crab Aratus pisonii was considered to have an amphi-American distribution; however, a recent study revealed that the Eastern Tropical Pacific populations were genetically distinct, thus representing a new ... -
Diketopiperazines from Costa Rican endolichenic fungus Colpoma sp. CR1465A
(2016-05-15)Three new diketopiperazines (1–3), cyclo(l-Pro-d-trans-Hyp) (1), cyclo(l-Pro-d-Glu) (2), and cyclo(d-Pro-d-Glu) (3) and five known diketopiperazines (4–8) were isolated from the endolichenic fungus Colpoma sp. CR1465A ... -
Dilation of a non-quasifree dissipative evolution
(1981-03)A semigroup evolution for the 1/2-spin which admits a conservative dilation is known to be governed by a Bloch equation in a standard form. Here we construct a conservative dilation directly from the Bloch equation, thus ... -
Dinámica de Activación e Inactivación del Sistema de Dos Componentes BvrR/BvrS durante la Vida Intracelular de Brucella
(2021-11)Las bacterias del género Brucella son patógenos intracelulares de vertebrados con la capacidad facultativa de crecer extracelularmente. El establecimiento de la vida intracelular de Brucella involucra al menos cuatro ... -
Dinámica de aguas alrededor de la Isla del Coco, Costa Rica
(2016-11-17)Se analizan datos climatológicos superficiales y subsuperficiales usando parámetros físicos y químicos, nutrimentos y oxígeno disuelto sobre el Pacífico Tropical Este, algunos resultados de bases de datos, y otros de modelos ... -
Dinámica de las aguas en la parte interna del Golfo de Nicoya ante altas descargas del Río Tempisque
(1998-06-14)Se estudió la dinámica de las aguas de la parte interna del Golfo de Nicoya ante grandes descargas de los ríos. Valores de 0 ppm fueron encontrados al norte de la Isla Chira representando los valores mas bajos reportados ... -
Direct functionalization of Mn12-(methacrylate) clusters on Si(100): surface characterization and electrochemical properties
(2016-09)The reaction of H–terminated Si(100) with methacrylate–substituted manganese carboxylate clusters [Mn12O12{CH2C(CH3)COO}16(H2O)4], [Mn12–(methacrylate)] via hydrosilylation afforded Mn12–(methacrylate)−Si(100). The chemically ... -
Discovery of cahuitamycins as biofilm inhibitors derived from a convergent biosynthetic pathway
(2016-02-16)Pathogenic microorganisms often have the ability to attach to a surface, building a complex matrix where they colonize to form a biofilm. This cellular superstructure can display increased resistance to antibiotics and ... -
Discovery of nicoyamycin A, an inhibitor of uropathogenic Escherichia coli growth in low iron environments
(2017)High-throughput screening and activity-guided purification identified nicoyamycin A, a natural product comprised of an uncommon 3-methyl-1,4-dioxane ring incorporated into a desferrioxamine-like backbone via a spiroaminal ... -
Discovery of Tricyclic Clerodane Diterpenes as Sarco/Endoplasmic Reticulum Ca2+-ATPase Inhibitors and Structure−Activity Relationships
(2015-05-20)Tricyclic clerodane diterpenes (TCDs) are natural compounds that often show potent cytotoxicity for cancer cells, but their mode of action remains elusive. A computationally based similarity search (CDRUG), combined with ... -
Discrete analysis for the America west coast rainfall predictability using El Niño/Southern Oscillation relationships
(Memorias del Tercer Congreso de Oceanografía Física, Meteorología y Clima del Pacífico Sur Oriental, 2013-10-16)The objective of the study was to determine the probability of occurrence of wet or dry season events, based on the phase of El Niño/Southern Oscillation (ENSO) phenomenon using multinomial response logit and logit regression ... -
Discrete Rainfall Predictability Using El Niño/Southern Oscillation Interaction
(2013-01-01)The objective of the study was to determine the probability of occurrence of wet or dry season events, based on the phase of El Niño/Southern Oscillation (ENSO) phenomenon using multinomial logit regression models. The ... -
Discrimination between earthquakes and chemical explosions in Eastern Russia using amplitude ratios obtained from analog records
(2006)Discrimination between earthquakes and chemical explosions is a significant problem facing many regional seismic networks around the world. Both earthquakes and chemical explosions are sources of elastic waves; therefore, ... -
Discrimination of offspring by indirect recognition in an egg-feeding dendrobatid frog, Oophaga pumilio
(2009)Offspring discrimination, the differential treatment of offspring and unrelated young, functions in numerous animal taxa to ensure that vital and costly parental care behaviours are appropriately directed. Discrimination ... -
Diseño de fórmulas integrales
(1992)Presentamos una nueva metodología de diseño de fórmulas integrales que no utiliza explícitamente sumas de Riemann ni procesos de límite. El método consiste en partir de un modelo elemental con solución conocida, e interpretar ...