Listar Ciencias básicas por título
Mostrando ítems 397-416 de 3118
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Biology of snakes of the genus Tretanorhinus: an integrative review
(2019)Many aspects of the biology of various snake species remain unknown, and the extent of this lack of information is not always clear. As new research usually depends upon previous findings, the gaps in our knowledge and ... -
Biology, Behavior, and Larval Morphology of Salbia lotanalis (Lepidoptera: Crambidae), a Potential Biological Control Agent of Miconia calvescens (Myrtales: Melastomataceae) From Costa Rica
(2014-11-01)The leaf roller Salbia lotanalis Druce (Lepidoptera: Crambidae), a potential biological control agent of Miconia calvescens de Candolle (Melastomataceae), was studied in Costa Rica. Larvae were collected from a Þeld site ... -
Bioprospecting
(2001)Bioprospecting is the systematic search for genes, natural compounds designs and whole organisms in wild life with a potential for product development by biological observation and biophsical, biochemical, and genetic ... -
Biosensor for Aluminum(III) Based on α-Chymotrypsin Inhibition using a Disposable Screen-Printed Carbon Electrode and Acetyl-Tyrosine Ethyl Ester as Substrate
(2015)We report on a new amperometric assay for Al(III) ions based on the inhibition of α-chymotrypsin enzyme. The immobilization of the enzyme was performed on screen-printed carbon electrodes modified with gold nanoparticles ... -
Birds in Coastal and Marine Environments
(Springer Science & Business Media, 2009)In Costa Rican coastal and marine environments (e.g., estuaries, mud- flats, islands, open ocean) 96 bird species have been recorded, 11% of the total avifauna in the country. This high diversity is primarily explained by ... -
Bis(μ2-benzoato-κ2O,O′)bis(benzoato-κO)bis(ethanol-κO)bis(μ3-hydroxido)hexakis(μ-pyrazolato-κ2N,N′)hexacopper(II) ethanol disolvate
(2019)Trinuclear copper–pyrazolate entities are present in various Cu-based enzymes and nanojar supramolecular arrangements. The reaction of copper(II) chloride with pyrazole (pzH) and sodium benzoate (benzNa) assisted by ... -
Black hole binaries with natal kicks
(2023)Las observaciones de más de 90 ondas gravitacionales observadas por la colaboración LIGO/VIRGO/KAGRA, han permitido obtener información sobre sistemas binarios compactos, como sus masas y espines. El parámetro de espín ... -
Blaming it on the Weather: The Role of “Inclement” Rainfall in Society- Nature Relations in Liberal Costa Rica (1860-1940)
(2011)This article seeks to shed light on some of the many possible interactions between changes in rainfall regime, one of the climatic factors with the greatest bearing on the history of human society, and the economic and ... -
Blooming plant species diversity patterns in two adjacent Costa Rican highland ecosystems
(2023-01-12)The Costa Rican Paramo is a unique ecosystem with high levels of endemism that is geographically isolated from the Andean Paramos. Paramo ecosystems occur above Montane Forests, below the permanent snow level, and their ... -
Bocaparvovirus, Erythroparvovirus and Tetraparvovirus in New World Primates from Central America
(2020)Parvoviruses in the genera Bocaparvovirus (HBoV), Erythroparvovirus (B19) and Tetraparvovirus (PARV4) are the only autonomous parvoviruses known to be associated with human and non‐human primates based on studies and ... -
Body distribution of Bothrops asper (terciopelo) snake venom myotoxin and its relationship to pathological changes
(1988)The distribution of 125I-labelled Bothrops asper myotoxin following i.m. and i.v. injections was studied in mice. After i.m. administration the toxin was concentrated in the injected gastrocnemius muscle, with relatively ... -
Bombacaceae
(2020)Como parte del proyecto del Manual de Plantas de Costa Rica, la primera obra completa sobre las plantas vasculares con flores del país, se describen las 29 especies y 10 géneros de plantas pertenecientes a la familia ... -
Bonos catastróficos como instrumento de protección financiera ante desastres en Costa Rica
(2019-08-27)La presente investigación pretende plantearuna propuesta de emisión de bonos catastróficos en Costa Rica como un instrumento de protección financiera ante el riesgo de desastres. Diversos países han ... -
Book Review. The Paphinia Book, by Rudolf Jenny
(2018-07) -
Boron adsorption to ferrihydrite with implications for surface speciation in soils: Experiments and modeling
(2020-07-29)The adsorption and desorption of boric acid onto reactive materials such as metal (hydr)oxides and natural organic matter are generally considered to be controlling processes for the leaching and bioavailability of boron ... -
Borrelidin Induces the Unfolded Protein Response in Oral Cancer Cells and Chop-Dependent Apoptosis
(2015)Oral squamous cell carcinoma (OSCC) is the most common cancer affecting the oral cavity, and US clinics will register about 30,000 new patients in 2015. Current treatment modalities include chemotherapy, surgery, and ... -
Bosque y Población en la Península de Osa, Costa Rica
(Revista de Biología Tropical 50 (2):585-598, 2002, 2002-01)Este estudio relaciona datos geocodificados de censos de población con información de uso de la tierra proveniente de imágenes de satélite y fotografías aéreas. Se analizan tres procesos: deforestación, reforestación y ... -
Bosques de coral negro del Área de Conservación Guanacaste, Costa Rica: especies y distribución
(2021-09-06)Introduction: Little is known about the antipatharians in Costa Rica, only three species are known from the Pacific and the occurrence of coral forests was previously reported only for Isla del Coco. Black ... -
Brachionium kirbyi, a new species honoring the founder of the “Bosque de Paz” Orchid Project in Costa Rica
(2015)A new species of Brachionidium from Costa Rica is described and illustrated. Brachionidium kirbyi is most similar to Brachionidium dressleri Luer. It can be recognized by the erect plants, up to 14 cm tall, often branching, ... -
Brachiopods, sipunculans, enteropneusts and metals from two estuarine tidal flats, Pacific, Costa Rica
(2016-09)Reports on the abundances and on metal concentrations in intertidal estuarine invertebrates from the Eastern Tropical Pacific are rare. Thus, the objectives of this report are to make accessible data on the abundances ...