Revista RIAA: Envíos recientes
Mostrando ítems 1061-1080 de 1154
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Fortalecimiento de las competencias administrativas en los extensionistas del Comité de Cafeteros de Colombia
(Sello Editorial UNAD, 2016-01-04)Partiendo de diferentes orientaciones y prácticas de la gestión humana, las organizaciones se han cuestionado sobre la verdadera contribución de esta área al logro de los propósitos organizacionales. El problema que se aborda en este artículo es un reto en cuanto al conocimiento de las competencias administrativas que deben considerarse en el trabajo de los extensionistas del Comité de Cafeteros del departamento de ... -
Composición química del grano de maíz (Zea mays) Chococito del municipio de Quibdó, Chocó, Colombia
(Sello Editorial UNAD, 2016-01-04)El objetivo del presente estudio fue determinar la composición química de granos de maíz Chococito, de material vegetal obtenido en cuatro parcelas rurales del municipio de Quibdó. Los resultados obtenidos demuestran que la composición química del grano es similar a otros tipos de maíz, no obstante, difiere en el bajo contenido de almidón comparado con otras variedades. Los valores medios porcentuales de almidón, ... -
Vehicle recognition by using acoustic signature and classic DSP techniques
(Sello Editorial UNAD, 2016-01-04)This paper shows the application of the classic technique of digital signal processing (DSP), the cross-correlation, used for the detection of acoustic signatures of road traffic in Cali city, Colombia. Future goal is to build a detection software that through real time measures allows us estimate the levels of acoustic pollution in the city by using simulation models of road traffic, in the framework of environmenta ... -
Contaminación odorífera: causas, efectos y posibles soluciones a una contaminación invisible.
(Sello Editorial UNAD, 2018-02-26)La exposición a olores desagradables, se constituye un tipo de contaminación atmosférica proveniente del desarrollo de actividades industriales y humanas que liberan moléculas odoríferas al medio ambiente, que se caracterizan por ser volátiles, lo cual resulta en una calidad del aire no óptimo para el ser humano, afectando en algunas ocasiones su salud; el artículo presenta una revisión bibliográfica acerca de las ... -
Editorial Vol. 8 Núm. 2 (2017)
(Sello Editorial UNAD, 2017-09-22)En Colombia, el Departamento Administrativo de Ciencia, Tecnología e Innovación -Colciencias diseña las políticas de ciencia, tecnología e innovación. Desde el año 2000, cuenta con un sistema de indización periódico de las revistas colombianas llamado Sistema Nacional de Indexación y Homologación de Publicaciones Especializadas de Ciencia, Tecnología e Innovación, el cual administra el Índice Bibliográfico Nacional ... -
Historical Analysis of chemical composition of tropical grasses in Colombia between 1985 and 2015. I – Forage Grasses
(Sello Editorial UNAD, 2019-06-19)To evaluate dynamics in nutritional composition of tropical forages used in cattle production in Colombia a systematic research was made, using a regular search engine, for studies published in Colombia between 1985 and 2015, Those studies had to include chemical composition data, such as crude protein, neutral detergent fiber, acid detergent fiber and in vitro dry matter digestibility (CP, NDF, ADF, IVDMD). Likewise ... -
Effect of an alternate source of phosphorus in the yield of onion (allium cepa l.) under field conditions
(Sello Editorial UNAD, 2019-06-19)The onion is one of the most cultivated and consumed vegetables worldwide. In Colombia its seed is concentrated in the departments of Boyacá and Cundinamarca. However, this crop currently presents problems of plagues, diseases and low mineral nutrition. The good supply of macro and micronutrients is essential for the plant to develop its metabolic processes properly. Within the macronutrients, phosphorus (P) plays an ... -
Adaptability of tropical pre-comercials hybrids of corn in the Bajio of Guanajuato, Mexico
(Sello Editorial UNAD, 2018-12-18)The objective of the present study was to identify the best sowing date for new experimental varieties of corn and also, to select the best corn genotypes. The work was carried out in the experimental field of the Instituto Tecnologico de Roque, Celaya, Gto., Mexico. The corn genetic material was provided by CIMMYT and evaluated for two sowing dates, June 25th (rainfed) and March 25th (irrigation) of 2016 and 2017, ... -
Influence of the cross-section type in the hydrodynamics of solar collectors of tubular photobioreactors
(Sello Editorial UNAD, 2019-06-19)Several studies in microalgae cultures show the relation between the photosynthetic efficiency and agitation, this effect was evaluated in solar collectors for tubular photobioreactors, which have different geometries in cross section (circular, octagonal, hexagonal and square). In this work, a computational study of microalgae culture (single-phase flow) for each of these solar collectors with a hydraulic diameter of ... -
Delimitation of the round river with ecosystemic criteria of the Mijitayo river, Pasto municipality-Nariño
(Sello Editorial UNAD, 2018-12-18)The study was conducted in Mijitayo river, which is located in Pasto municipality, in the south-west of Colombia. The general objective was to apply a methodology based in the ecosystems protection to define round river width and the more suitable species to its recovery, having as main element the life zones identification that are in the study area. With this purpose, some of the phytosociological characteristics ... -
Pertinence of the competencies demonstrated in undergraduate projects of Forest Engineering
(Sello Editorial UNAD, 2018-12-18)This study analyzes the relevance of the competences developed in undergraduate projects of the students within the Forest Engineering curriculum project at the Francisco Jose de Caldas District University, with respect to the professional profile adopted and approved by the Ministry of Education; hence, the undergraduate dissertation defenses approved between 2015 and 2017 developed by the students trained with the ... -
Model for the dynamic management assessment of ordinary waste in Bogota and its influence on the Urban Environmental Quality Index
(Sello Editorial UNAD, 2019-06-19)The objective of this article was to develop a model for the dynamic management assessment of the ordinary waste of Bogota and to assess its influence in the indicators of used and properly disposed waste, which are part of the Urban Environmental Quality Index. For the construction of the model, the Systems Dynamic methodology was applied, which allowed the assessment of different management scenarios. Four scenarios ... -
Molecular characterization with ISSR markers of the citrus collection from the Universidad de los Llanos
(Sello Editorial UNAD, 2021-06-13)Contextualization: Citrus trees are one of the most cultivated tree species in the world. They are of great importance since their production is greater than that of any other fruit tree. Knowledge gap: Despite the great demand for citrus fruits in Colombia, there is limited knowledge about the origin and genetic diversity. Likewise, molecular characterization studies of citrus varieties established in the work ... -
Identification and classification of carcinogenic chemical substances in a meat processing plant
(Sello Editorial UNAD, 2021-06-02)Contextualization: A large number of chemical products are used in industry and technological sectors, generating health risks for those who are exposed, and may induce alterations depending on the concentration, manipulation, exposure, and susceptibility of the worker. These chemical agents can produce a variety of irritating allergic, toxic and even carcinogenic effects. Knowledeg gap: Ignorance of the danger ... -
Sowing depth and seed size on mung bean seedling performance
(Sello Editorial UNAD, 2021-06-02)Contextualization: The mung bean is widely cultivated in Asia and Brazil, it has emerged as an option for cultivation in the second crop in the Central West Brazil, especially rotation with grasses is intended; however, the uneven and slow emergence of mung bean seedlings can lead to delays in the development of the crop and impair the final stand. Knowledge gap: Some of the conditions that affect the ... -
Effect of salicylic acid in the control of septoria and yield components in two wheat cultivars
(Sello Editorial UNAD, 2020-12-23)Contextualization: The increase in wheat production has caused pathogenic diseases to appear more frequently due to the implementation of monoculture. The Septoriosis or stain of the wheat leaf caused by Zymoseptoria tritici causes a decrease in the photosynthetic area causing losses in grain yield ranging between 17% and 50%, depending on the phenological state in which the infection occurs. Knowledge gap: The ... -
Biosurfactants produced by metal-resistant Pseudomonas aeruginosa isolated from Zea mays rhizosphere and compost
(Sello Editorial UNAD, 2020-12-23)Contextualization: Pseudomonas aeruginosa is capable of producing biosurfactants which have many uses in bioremediation and the production of antiviral, antibacterial, antiparasitic, sporicidal and antifungal agents, among others. Knowledge gap: This study describes the production of mono and di-rhamnolipid biosurfactants by P. aeruginosa strains isolated from Zea mays rhizosphere and composts in the state of ... -
Influence of scarification and gibberellic acid on seed dormancy and germination of pomegranate seedlings
(Sello Editorial UNAD, 2021-06-02)Contextualization: Due to the importance of pomegranate among fruit species, studies on the physiology of its seeds and the production of seedlings are essential for the expansion of commercial orchards. Knowledge gap: With the portrayed importance of this crop and its use in various sectors, such as agro-industrial and pharmaceutical products, the development of continuous and straightforward propagation techniques ... -
Bodies between bodies, life within life, encounters
(Sello Editorial UNAD, 2020-07-01)This article is concerned about the possibilities of what we are able to do once we acknowledge the fact that we are wandering bodies in contact with other bodies. What can we do? What does an environmental epistemology entail once sensitivity, body, meaning and affection are brought to the front? We begin with a discussion on dichotomies, monisms and dualisms, to offer, afterwards, a proposal from multiplicities, ... -
Evaluation of the environmental sustainability of three agricultural production systems, in the village of Bolo San Isidro, Palmira (Valle del Cauca)
(Sello Editorial UNAD, 2010-10-07)This study focuses on Assessment of Environmental Sustainability in Three systems of agricultural production: Conventional, Agroecological and Transition to Agroecological. The conventional system is a system that uses chemical supplies such as herbicides, insecticides and pesticides, heavy machinery such as tractors and irrigation, and emphasis on agriculture as a business. The Transition to Agroecology systems is in ...
