Revista RIAA: Recent submissions
Now showing items 981-1000 of 1154
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El trasfondo imaginal del mundo: Avatares epistémicos de lo ambiental desde una hermenéutica cosmológica
(Universidad Nacional Abierta y a Distancia, UNAD, 2020-07-01)Este artículo constituye, en esencia, una exploración en torno al trasfondo epistémico que subyace en las pre-ocupaciones y asuntos nucleares del pensamiento ecológico contemporáneo (centrada en una matriz ontológica “holística” de la naturaleza) visto desde la necesidad de desarrollar una hermenéutica de alcance cosmológico (de conformidad con los planteamientos de Edmund Husserl y de Hans Blumenberg). De esta manera, ... -
Isolamento de lectinas por cromatografia de afinidade
(Sello Editorial UNAD, 2017-01-13)Cromatografia de afinidade é uma técnica usada para separar compostos, como, por exemplo, determinadas proteínas, que têm a capacidade de se ligar não covalentemente e reversivelmente a moléculas específicas conhecidas como ligantes. Esse método difere das técnicas de cromatografia clássica devido a proteína conseguir ser separada com base em uma única propriedade bioquímica. Em cromatografia de afinidade, o ligante ... -
Caracterización de la vegetación en plantaciones de cupressus lusitanica (mill) y su potencial utilización en proyectos de restauración, tunja – boyacá
(Sello Editorial UNAD, 2018-07-05)Se realizó la caracterización, composición y estructura de especies vegetales en una plantación de Cupressus lusitanica, presente en un predio de la Universidad Pedagógica y Tecnológica de Colombia de Tunja-Boyacá a 5°33’29.0’’ N y 73°21’37.0’’O. Los datos se tomaron siguiendo la metodología de Braun-Blanquet, con algunas modificaciones; se cuantificó y caracterizó la vegetación existente dentro de un área de 1.225 m ... -
Prácticas Agrícolas Y Riesgos A La Salud Por El Uso De Plaguicidas En Agrícultores Subregión Mojana – Colombia
(Sello Editorial UNAD, 2018-02-26)Las implicaciones a la salud del trabajador agrícola por el uso de plaguicidas se constituyen en una de las mayores preocupaciones actuales en materia sanitaria, debido al uso indiscriminado de los mismos y la posible no aplicación de controles que prevengan enfermedades, accidentes laborales y/o daños en el ambiente. El presente estudio, desarrollado en la subregión de la Mojana en el departamento de Sucre-Colombia ... -
Reconocimiento territorial mediante sensores remotos para viabilizar la construcción de escenarios turísticos, zona de páramo y subpáramo municipio de Soacha.
(Sello Editorial UNAD, 2018-07-05)La fragmentación ecosistémica desarrollada en la zona de estudio que integra parte del páramo de Sumapaz - Cruz Verde se correlaciona básicamente con factores antrópicos, por lo cual el objeto del presente estudio fue identificar las actividades altamente impactantes así como determinar el grado de intervención antrópica con el fin de proponer zonas de turismo sostenible para aportar en la mitigación del deterioro ... -
Análisis comparativo de los métodos de evaluación de impacto ambiental aplicados en el subsector vial en Colombia
(Sello Editorial UNAD, 2018-07-05)Se presentan los resultados del análisis comparativo de las metodologías de evaluaciónde impacto ambiental aplicados en proyectos, obras o actividades del subsector vial en Colombia. El trabajo se basa en la investigación documental de la evolución de las metodologíasusadas, logrando identificar las de mayor aplicación en Colombia en la vigencia 2014 como son: el método de Leopold en la etapa de identificación, el ... -
Effect of the mineralized liquid organic fertilizer in the roduction and composition of grazing forage
(Sello Editorial UNAD, 2020-07-07)Contextualization: Livestock production in Colombia is developed in a large part of the national territory, with a 53% share of livestock gross domestic product. It is considered an important socioeconomic line for the field progress. It occupies a significant fraction of land use, destined predominantly to pasture and forage for cattle. This activity is carried out in large areas and increases in productivity depends ... -
Effect of orange silage supplementation on bovine milk composition
(Sello Editorial UNAD, 2020-07-07)Contextualization: In livestock production, food supplementation is carried out with commercial feed that increases production costs and thus affects the profit margins of livestock companies. Research gap: Orange silage is seen as a nutritional and economic alternative for livestock companies in search of sustainability under the following questions: What is the effect of orange silage on the productivity and quality ... -
Efficiency evaluation of the domiciliary system for supply of safe water, San Fernando district
(Sello Editorial UNAD, 2020-07-07)Contextualization: Colombian rural areas have a deficit in the coverage of safe water supply service. In addition, the treatment systems already implemented are not efficient enough in the removal of pathogens. Research gap: The waters used for consumption are not treated properly, added to the poor coverage of its supply, and despite the fact that the population carries out the water treatment on its own, it is not ... -
Flow forecast of the cravo sur river, sector of El Morro - la cabuya bridge, Casanare department, Colombia
(Sello Editorial UNAD, 2019-12-11)Colombia has a large hydrographic network in the region of Eastern Plains, where the Institute of Hydrology, Meteorology and Environmental Studies (IDEAM) has hydrometeorological stations than can store rainfall records over time. They are required for develop studies that allows monitoring this network, thus providing a base for decision-making in sectors that are affected by the climatic variations. In accordance ... -
Editorial Vol. 10 Núm. 1 (2019)
(Sello Editorial UNAD, 2023-08-18)Los sistemas de publicaciones han tomado parte de los principios estadísticos descriptivos para poder evidenciar la importancia de sistemas de medición en las revistas, dentro de las que se destacan: tazas de rechazo, números de pares externos, estadísticas de rebote entre otros, sin embargo, el mayor reto de la mayoría de las revistas es la de propender a las buenas practicas editoriales y estas a su vez a mejorar los ... -
Vacunas para parásitos gastrointestinales, un pilar de la medicina preventiva en la práctica veterinaria: revisión sistemática
(Sello Editorial UNAD, 2021-12-21)Contextualization: The antiparasitic resistance caused by the indiscriminate use of anthelmintic drugs for the control of gastrointestinal parasites in production animals and pets, has become one of the biggest problems in animal health. For this reason, the use of vaccines could benefit animal health and welfare by controlling emerging zoonotic diseases and foodborne pathogens of animal origin, thus improving public ... -
Alternatives for the stabilization of sludge generated in wastewater treatment plants from a systemic approach: a review
(Sello Editorial UNAD, 2021-12-21)Contextualization: Population growth and environmental problems at the local, national and international levels related to pollution from untreated sludge, due to the increasing volumes of such waste generated by wastewater treatment plants (WWTPs), increase environmental degradation. Knowledge gap: There are deficiencies in the management of sewage sludge, attributable to a lack of knowledge of conventional and ... -
Characterization and typification of purple passion fruit (Passiflora edulis f. edulis Sims) production systems, in Tolima northern and central-western regions
(Sello Editorial UNAD, 2021-12-21)Contextualization: The highest demand in the international market is exhibited by purple passion fruit, known as gulupa, which is the third most exported fruit in Colombia. Tolima department had increased 61% of gulupa crop area from 2015 to 2019, which demonstrates progressive economic importance of the crop in the zone. Knowledge gap: However, characterization and typification farm assessments are not evidenced, that ... -
Hydroponic and organoponic green forage of corn as a nutritional supplement for sheep in the Amazon Foothills
(Sello Editorial UNAD, 2021-12-21)Contextualization: Ruminants have a comparative advantage over other species, because their ability to digest the fiber fractions present in forages. Knowledge gap: In tropical regions, due to changing environmental conditions, it is more difficult to produce pastures of high nutritional quality, resulting in forage seasonality that leads to supplementation with commercial feedstuffs that increase production ... -
Remineralizer and controlled-release fertilizer increase Mimosa scabrella Benth. seedlings growth
(Sello Editorial UNAD, 2021-12-21)Contextualization: M. scabrella is a native tree species of the Brazilian Mixed Ombrophilous Forest, with a high ecological importance and economic potential. Knowledge gap: There is a lack of information about the use of resources that favour the seedlings production of this species. Purpose: This study aimed to determine the most appropriate doses of controlled-release fertilizer (CRF) combined with the addition ... -
Photosynthetic pigments in Stevia rebaudiana bert under differential conditions of sunlight and nitrogen fertilization in greenhouse
(Sello Editorial UNAD, 2021-12-21)Contextualization: The areas planted with stevia have been growing significantly in response to the new trends in consumption of low-calorie and natural foods. The effects of high radiation levels, due to global climate change, have evidenced the need to development new studies about the physiological behavior of the photosynthetic pigments of agricultural species. Knowledge gap: The lack of knowledge of the behavior ... -
Application of urea, DAP and KCL to coffee (Coffea arabica L.) seedbeds of the Castillo variety
(Sello Editorial UNAD, 2021-12-21)Contextualization: In the coffee production system, the seedling stage is a determining factor in the success of the implementation and behavior of the crop. In this stage, the nutrition is a very relevant factor. Knowledge gap: The use of substrates with diverse origins for the implementation of seedbeds in coffee makes difficult a correct diagnosis of fertility. For this reason, the nutrition in this phase of the ... -
Use of microalgae as an alternative in heavy metal removal
(Sello Editorial UNAD, 2021-12-21)Contextualization: the direct contamination of bodies of water, because of dumping of wastewater contaminated with heavy metals, is a major problem that has become more acute in recent decades, because heavy metals can disrupt the proper functioning of ecosystems. Knowledge gap: it is necessary and urgent to search for alternatives for removal of metallic contaminants, which must be low cost, and harmless for the ... -
Yield components in Coffea arabica L. In three altitudinal zones of southern Colombia
(Sello Editorial UNAD, 2021-12-21)Contextualization: Coffee is cultivated in 64 % of Nariño municipalities, where climate variability is suitable for the plant to carry out its metabolic activities. Knowledge Gap: The lack of knowledge and the lack of studies related to the response of performance components, in different environments, difficult to interpret which variables influence in the performance of the Castillo variety coffee. Purpose: The goal ...
