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Mostrando publicaciones 2290-2309 de 5004
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Filling gaps in the diversity and biogeography of Chilean millipedes (Myriapoda: Diplopoda)
(2022)Research on the diversity and biogeography of Chilean millipedes represents a significant gap in knowledge. To reduce this gap we conducted a study: (1) to investigate the current state of knowledge of millipede diversity, ...
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Filling gaps in the knowledge of the Colombian Darwin wasps (Hymenoptera: Ichneumonidae): new records, description of unknown males, and taxonomical notes
(2023)Darwin wasps (Hymenoptera: Ichneumonidae) are parasitoids and a natural enemy of a wide range of holometabolous insects and spiders and are considered one of the largest families in the animal kingdom. Unfortunately, there ...
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Film dressings based on hydrogels: Simultaneous and sustained-release of bioactive compounds with wound healing properties
(2019)This research proposes the rational modeling, synthesis and evaluation of film dressing hydrogels based on polyvinyl alcohol crosslinked with 20 different kinds of dicarboxylic acids. These formulations would allow the ...
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Filosofía pre-socrática. Inicios del ejercicio filosófico
(2012)El siguiente trabajo presenta y contextualiza históricamente el punto de partida del desarrollo de la Filosofía griega. Se destaca la manera en que el mundo griego interactúa con otras culturas haciendo de la periferia ...
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Filtración tangencial en vinos tintos edulcorados
(Universidad Católica del Maule, Facultad de Ciencias Agrarias y Forestales, 2009)Los vinos tintos edulcorados, de consumo masivo en Chile, que poseen niveles de azúcar residual mayor a 15 g L-1, son propicios para el desarrollo de microorganismos, principalmente levaduras y bacterias acéticas. El ataque ...
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Filtro indirecto y robusto para la eliminación de ruido y agudización de regiones de contornos en imágenes color
(Universidad Católica del Maule, Facultad de Ciencias de la Ingeniería, 2016)En este trabajo, un método de filtraje que actúa de manera simultánea para reducir ruido y eliminación de blurring en regiones de contornos es presentado. El método propuesto, consiste en el acoplamiento de: (a) Proceso ...
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Fin del universo y esperanza cristiana
(2019)El pronóstico científico de un fin del universo debido al fenómeno físico de la entropía constituye un desafío para la esperanza cristiana de una salvación del cosmos. En el presente artículo se presenta una visión general ...
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Financiamiento de las pequeñas y medianas empresas : caso: pymes agrícolas de la Provincia de Linares
(Universidad Católica del Maule, Facultad de Ciencias Sociales y Económicas, 2014)Este estudio examina los factores o elementos que inciden en el acceso a financiamiento bancario por parte de las Pequeñas y Medianas Empresas (Pymes) de la Región del Maule. El elemento distintivo de este estudio es que ...
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Fingerprint classification through standard and weighted extreme learning machines
; Mora, Marco
; Barrientos, Ricardo ; ; (2020)
Fingerprint classification is a stage of biometric identification systems that aims to group fingerprints and reduce search times and computational complexity in the databases of fingerprints. The most recent works on this ...
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Fingerprint classification with the extreme learning machine algorithm for multilayer perceptron
; ; Mora, Marco; ; (2022)
Fingerprint classification comes to be a relevant guarantee for efficient as well as accurate fingerprint identification, in particular in the case of dealing with one-to-many fingerprint identification. Nevertheless, owing ...
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Finite field metrics applied to M-FSK modulation in VLC systems
(2020)This paper provides an alternative to digital filter based frequency detection for multi-frequency shift keying modulation (M-FSK) using field programmable gate array (FPGA) architectures, by providing a hamming space ...
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First detection of Leishmania DNA in Psammomys obesus and Psammomys vexillaris: Their potential involvement in the epidemiology of leishmaniasis in Tunisia
; ; ; ; ; Cancino-Faure, Beatriz; ; ; ; ; ; ; (2018)
Leishmaniasis, a public health problem in Tunisia, are diseases caused by different Leishmania species. Cutaneous leishmaniasis is present from the North to the South under different forms, due to Leishmania (L.) major, ...
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First high-altitude record of Bucculatrix mirnae Vargas and Moreira (Lepidoptera, Bucculatricidae) on a newly documented host plant: the importance of host plant distribution for conservation on the western slopes of the Andes mountains of Northern Chile
(2016)Bucculatrix mirnae Vargas and Moreira, 2012 (Lepidoptera, Bucculatricidae) is a micromoth native to the coastal valleys of the Atacama Desert previously known to occur only in the type locality of the Azapa Valley, close ...
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First record of Odontaster penicillatus populations (Philippi, 1870) (Echinodermata: Asteroidea) in the Atacama and Antofagasta regions, Chile (Southeast Pacific)
(2022)We report for the first time the presence of local populations of the starfish Odontaster penicillatus in the regions of Atacama and Antofagasta, Chile. This finding indicates an extension of the distribution limit of 500 ...
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First remarks on the nesting biology of Hypodynerus andeus (Packard) (Hymenoptera, Vespidae, Eumeninae) in the Azapa valley, northern Chile
(2012)First remarks on the nesting biology of Hypodynerus andeus (Packard) (Hymenoptera, Vespidae, Eumeninae) in the Azapa valley, northern Chile. Some aspects about the nesting biology of the potter wasp Hypodynerus andeus ...
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Fish prey of the peruvian tern sternula lorata along the northern coast of Chile
(2024)Scarce information is available on the trophic ecology and feeding habitats of the Peruvian Tern Sternula lorata. We searched 15 Peruvian Tern colonies along the coast of northern Chile during the breeding seasons of 2008 ...
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Fisura labio palatina. Revisión de la literatura
(2022)La formación del paladar ocurre entre la quinta y undécima semana de vida intrauterina producto de la unión del paladar primario y secundario. Por otra parte, la formación del labio superior ocurre entre la quinta y sexta ...
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Fitness cardiorrespiratorio estimado mediante ecuación y su caracterización sociodemográfica en población chilena: Resultados de la Encuesta Nacional de Salud 2016-2017
(2020)Background: Cardiorespiratory fitness is a strong predictor of mortality and chronic diseases. However, its estimation is costly and time consuming which may limit it broad use in population-based studies. Aim: To estimate ...
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Five new species of Dolichomitus Smith from the tropical Andes, with a key for the South American species (Hymenoptera, Ichneumonidae, Pimplinae)
(2020)Dolichomitus Smith is a widely distributed pimpline genus with more than seventy known species. There are eight species previously reported from South America: D. annulicornis (Cameron), D. bivittatus Townes, D. hypermeces ...