Artículos científicos
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Threshold-crossing time statistics for gene expression in growing cells
(Cold Sprimg Harbor Laboratory (CSH); Virginia (Estados Unidos), 2022)Many intracellular events are triggered by attaining critical concentrations of their corresponding regulatory proteins. How cells ensure precision in the timing of the protein accumulation is a fundamental problem, and contrasting predictions of different models can help us understand the mechanisms involved in such processes. Here, we formulate the timing of protein threshold-crossing as a first passage time (FPT) ... -
Semi-parametric generalized estimating equations for repeated measurements in cross-over designs
(Cornell University; New york (Estados Unidos), 2022)A model for cross-over designs with repeated measures within each period was developed. It is obtained using an extension of generalized estimating equations that includes a parametric component to model treatment effects and a non-parametric component to model time and carryover effects; the estimation approach for the non-parametric component is based on splines. A simulation study was carried out to explore the model ... -
Prioritizing Colombian plant genetic resources for investment in research using indicators about the geographic origin, vulnerability status, economic benefits, and food security importance
(Researcher; Virginia (Estados Unidos), 2022)Germplasm banks are the most significant repository for plant genetic resources for food and agriculture (PGRFA) worldwide. Despite their strategic importance, national germplasm banks of tropical megadiverse developing countries such as Colombia have extremely limited funds. Therefore, making strategic decisions about research investment is essential. Here, we designed a data-driven approach to build an index that ... -
Phenotypic variability for conformation traits of BON cattle in Colombia
(Researcher; Virginia (Estados Unidos), 2022)The purpose of this study was to evaluate the variability of conformation traits (CT) in three BON cattle subpopulations with different herd management. For this study, using the nine-point scores of 20 CT as well as breed characterization and nal score in 929 cows were analyzed. Descriptive statistics alongside hierarchical cluster analysis were performed. It was found that legs and feet traits had the slightest ... -
Multi-environment Genome Wide Association Studies of Yield Traits in Common Bean (Phaseolus vulgaris L.) × Tepary Bean (P. acutifolius A. Gray) Interspecific Advanced Lines at the Humid and Dry Colombian Caribbean Subregions
(Cold Sprimg Harbor Laboratory (CSH); California (EE. UU.), 2022)Genome Wide Associations Studies GWAS are a powerful strategy for the exploration adaptive genetic variation to drought stress in advanced lines in common bean with interspecific genotypes, yet they still lack behind in the use of arid multi-environments as the subregions of the Colombian Caribbean. In order to bridge this gap, we couple an advanced genotypes panel integrated with Common Bean (Phaseolus vulgaris L.) × ... -
Modeling cell size regulation under complex and dynamic environments
(Cold Sprimg Harbor Laboratory - CSH; California (Estados Unidos), 2022)In nature, cells face changes in environmental conditions that can modify their growth rate. In these dynamic environments, recent experiments found changes in cell size regulation. Currently, there are few clues about the origin of these cell size changes. In this work, we model cell division as a stochastic process that occurs at a rate proportional to the size. We propose that this rate is zero if the cell is smaller ... -
Metarhizium robertsii with insecticidal activity for the control of the fruit fly (Anastrepha obliqua), the main pest in mango crop in Colombia
(Research Square; Virginia (Estados Unidos), 2022)The aim of this study was to evaluate and select entomopathogenic fungi that produces insecticidal compounds for the control of adults of Anastrepha obliqua Macquart (Diptera: tephritidae), that are the main pest of mango (Mangifera indica L. Bark) in Colombia. One strain of the species Metarhizium robertsii with insecticidal activity was selected. By column fractionation, an active fraction was obtained, this compound ... -
La experiencia participativa en la elaboración de la estrategia 2020-2030 para el Paisaje Forestal Milpero en la península de Yucatán
(CentroGeo e Incide Social A.C.; Virginia (Estados Unidos), 2022)El Paisaje Forestal Milpero (pfm) es una denominación para el territorio que comprende las áreas de la península de Yucatán donde coexisten las selvas tropicales y la milpa maya tradicional. En el marco de la generación de la estrategia de país a 2030 del Programa de Pequeñas Donaciones (ppd), se obtuvieron 21 indicadores asociados a la resiliencia del pfm, agrupados en cinco categorías: 1) heterogeneidad del ... -
Flash-Vacuum Expansion, a Low Cost and Energy-Efficient Alternative Process to Produce High-Quality Fruit Puree: Application to Physalis Peruviana
(SSRN; Virginia (Estados Unidos), 2022)Goldenberry has a great potential for the development of high-quality products due to its attractive sensory attributes, bioactive compounds, and health benefits. However, postharvest losses are high due to the lack of processing technologies that can both be adapted to rural conditions in producing countries to generate high-quality products. Flash-vacuum expansion (FVE) coupled with vacuum pulping is a new process ... -
Evaluación del color durante la maduración del aguacate (Persea americana Mill. cv. Hass)
(ResearchGate; Antioquia (Colombia), 2016)La maduración del aguacate ‘Hass’ se caracteriza por un cambio de color de la cáscara de verde a púrpura, esto puede servir como índice para mejorar su manejo poscosecha. Debido a que en Colombia no hay información suficiente sobre este fenómeno, el objetivo de éste trabajo fue determinar el color de la epidermis del fruto de aguacate y su velocidad de cambio durante la madurez de consumo (MC). Se cosecharon 90 frutos ... -
First records of the iceryine scale insects Crypticerya brasiliensis (Hempel) and Crypticerya genistae (Hempel) (Hemiptera: Monophlebidae) for Colombia
(About Open Journal Systems; Florida (EE. UU.), 2016)Crypticerya brasiliensis (Hempel) and Crypticerya genistae (Hempel) (Hemiptera: Monophlebidae: Iceryini) are herein reported for the fi rst time in Colombia. The above two species and Crypticerya multicicatrices Kondo and Unruh and Crypticerya zeteki (Cockerell) are briefl y diagnosed based on the adult females. The presence of C. zeteki in Colombia is confi rmed and a key to the adult females of species of the tribe ... -
Seroprevalence and risk factors associated with bovine leukemia virus in Colombia
(Journal of Veterinary Medicine and Animal Health; Virginia (Estados Unidos), 2016)An epidemiological study was conducted to establish the prevalence of the Bovine Leukemia Virus (BLV) in Colombia and to describe risk and protecting factors associated with this infection disease. The study was performed with an observational descriptive cross-sectional process in twelve Colombian regions, by collecting blood samples from 8150 bovines in 390 cattle farms between February and September 2014. The ... -
Cupuassú
(Vidarium; Medellín (Colombia), 2014)Cupuassu is an Amazonian native fruit from the states of southern and southeastern of Pará and Maranhão in Brazil and is one of the most consumed fruits in that region (Duarte et al., 2010; Vasconcelos et al., 1975). These species are incipiently domesticated populations or very recently domesticated populations, rapid pre- or post-conquest dispersal and lack of phylogeographic population structure (Clement et al., 2010). -
Scale insects (Hemiptera: Coccoidea) associated with avocado crop, Persea americana Mi l. (Lauraceae) in Valle del Cauca and neighboring departments of Colombia
(University of Nebraska–Lincoln; Nebraska (EE. UU.), 2016)Abstract. Scale insects (Hemiptera: Coccoidea) of avocado, Persea americana Mill. (Lauraceae) were collected in the State of Valle del Cauca, Colombia. The study was conducted for one year, during October 2008–October 2009. As a result of this study, 34 scale insect species in seven families (Coccidae, Diaspididae, Kerriidae, Margarodidae, Monophlebidae, Pseudococcidae and Putoidae) were collected. Together with previous ... -
Estimación del área foliar en café variedad Castillo a libre exposición y su relación con la producción
(Centro Nacional de Investigaciones de Café; Caldas (Colombia), 2017)Los modelos que describen relaciones alométricas, basados en el conteo de hojas, son métodos no destructivos, fáciles y económicos para estimar el área foliar en árboles. Con este propósito se realizaron mediciones del área foliar, censando las hojas en varios árboles de café variedad Castillo de diferentes edades, estableciendo y validando la relación entre el área foliar de la rama y el número de hojas en ella. ... -
Diseño metodológico para la construcción de política pública en I+D+I, caso de estudio: sector agropecuario colombiano
(VII Congresso Internacional de Conhecimento e Inovação - Ciki; Río de Janeiro (Brasil), 2017)La definición de planes estratégicos sectoriales como instrumentos para la gestión de política pública, que articulan directrices en el corto, mediano y largo plazo, tiene en el sector agropecuario la necesidad de promover actividades basadas en Investigación, desarrollo e innovación, que respondan a especificidades de regiones, áreas temáticas, cadenas productivas, sistemas productivos, megatendencias, a partir del ... -
Diversidad de artrópodos asociados al algodón Bt y convencional (Gossypium hirsutum L.) en Colombia
(Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias; Texcoco (México), 2017)El uso de organismos genéticamente modificados (OMG) ha generado grandes expectativas en el desarrollo de agrocultivos. Sin embargo, se originan incertidumbres sobre efectos causales sobre la artropofauna benéfica asociada al cultivo de algodón. En el presente estudio se evaluó la diversidad de la artropofauna asociada al agroecosistema algodón Bt y convencional en el departamento de CórdobaColombia, en la temporada ... -
Selección de tecnologías para la adaptación al cambio climático en el sector cacaotero huilense
(Universidad Surcolombiana; Huila (Colombia), 2017)La ola invernal ocurrida en el país entre el 2010 y 2011 arrojo perdidas al sector cacaotero del departamento del Huila de $9.965 millones (equivalente al 1.2% del PIB departamental). Tal evento climático evidenció debilidades en la capacidad adaptativa al cambio climático y la mejora en competitividad del sector. Motivado por lo anterior y conociendo la existencia de inconmensurabilidad de valores tanto técnicos como ... -
Estimación de componentes de varianza para características de crecimiento en ganado Blanco Orejinegro en Colombia
(Asociación Nacional de Zootecnistas - ANZOO; Sincelejo (Colombia), 2017)Las características de crecimiento son de suma importancia dentro de los sistemas productivos. El presente trabajo tuvo como objetivo estimar componentes de varianza y parámetros genéticos para peso al destete (PD) y ganancia de peso entre nacimiento y destete (GDND) en una población de animales de la raza Blanco Orejinegro (BON) en Colombia. Se utilizó la base de datos de registros genealógicos comprendió información ... -
Avances en la caracterización de la producción láctea y el crecimiento antes del destete en el banco de germoplasma de la raza criolla Hartón del Valle en el C.I Palmira (CORPOICA)
(Asociación Nacional de Zootecnistas - ANZOO; Sincelejo (Colombia), 2017)El banco de germoplasma in vivo que se ha venido estructurado desde el año 2014 en el Centro de Investigación Palmira (Corpoica) ha permitido la conservación de la variabilidad genética, es decir de los diferentes genes responsables por las características de adaptación, rusticidad, fertilidad, producción, calidad del producto, entre otros que presenta la raza Hartón del Valle. La limitada información actualizada de ...
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