Enfoque UTE

pp. 1 - 12

Authors: Jacinto Atanacio Andrade, J. Rivera-García, G. C. Chire-Fajardo, M. O. Ureña-Peralta

The objective of this work was to evaluate the physical and chemical properties of the fine National flavor cocoa beans and CCN 51 from Ecuador, as well as, ICS 6 and CCN 51 from Peru for the production of quality chocolate. They were determined, cacao bean index (g), cacao bean testa percentage, cacao bean dimensions (mm), porosity (%), fermentation index (%), whiteness index, acidity (%), pH and proximate analysis (%), using AOAC methods and the usual ones for cacao quality. According to proximate analysis: the average crude protein content for Peruvian cacao bean was 78.8 % higher, the average crude fat content for Ecuador cacao bean was 10.1% higher, the crude fiber of ICS 6 cacao bean stands out among the other cocoa beans with 7.10 ± 0.28%, other components have a degree of similarity between the two countries, so both are suitable to be worked in the production of high quality chocolate, due to its chemical and sensory attributes, generating a quality and competitive product internationally, certifying interest from other latitudes drive the export process and economic benefit for each nation.

pp. 67 - 77

Authors: M. Racines-Oliva, Evelin Alexandra Tamayo-Gutiérrez, M. Jarrín, F. Báez, C. Tello

The following research evaluated, at laboratory level, the efficiency of fungicides of organic origin against chemical fungicides of conventional use in the control of the growth of Dactylonectria torresensis, considered a pathogen of economic importance that affects the blackberry (Rubus glaucus) in Ecuador. The objective of the study was to find natural, environmentally friendly alternatives that allow obtaining clean food for the population. For this purpose, the efficiency of conventional chemical synthesis fungicides was evaluated: Azoxystrobin, Benomil, Carbendazim, Difeconazole, Fosetyl Aluminum, Tachigaren, Propiconazole, Penconazole, Metalaxil and Thiabendazole each in doses of 100, 10 and 1 ppm, compared to the efficiency of organic synthesis fungicides: neem oil, mirtaceous extract, garlic extract, pentahydrate cupric sulfate, thyme extract, applied in doses of 100, 200, and 300 ppm. It was found that the mirtaceous extract controlled 100 % of the mycelial growth of Dactylonectria torresensis, with results similar to those obtained with Carbendazim and Azoxystrobin, it is concluded that if there is an alternative for the control of the fungus, which could be used commercially by decreasing in this way the use and harmful effects of conventional agrochemicals.

pp. 28 - 44

Authors: Luis Alberto Núñez-Lira, Marco Aurelio Rosario Villarreal, Javier Francisco Javier Márquez Camarena, Janeth Bertha Mariño Arroyo

It consists of designing and evaluating the performance of a wireless broadband network in the province of Huaytará, for internet connectivity. It is an applied and experimental investigation where the performance parameters of the network were evaluated. The dependent variable is the capacity of the Wlan cell and the QoS parameters; and as independent variables the coverage and density of the Wlan network. It can be said that for radios up to 8 meters, the experimental client's data rate is higher than the control client's data rate, and for radios greater than 15 meters, the experimental and control client's data rates are no different. As for the QoS parameters, they are favorable for multimedia applications. The network implemented with TDM-E1 / Ethernet and IEEE 802.11n technology, has a maximum capacity per cell of 32.5 Mbps in the 2.4G band and 65 Mbps in the 5.8G band, considering minimum operating parameters of the wireless devices. Users have a 15.2 Mbps field data rate for a maximum radius of 8 meters with up to 7 wireless users connected in the cell, at 2.4 Ghz.