La presente tesis está enfocado a solucionar el problema de atoros, considerando la nueva abertura de chute de descarga rectangular de 1850mm x1750mm con inclinación de 20°. (Jenike and Johanson Chile S.A, 2016) En el desarrollo de la tesis se presentará el diseño de compuertas para una nueva abertura de chutes de descarga evitando atoros, brindando seguridad al operador y camión de acarreo e incrementando la productividad del circuito chancado. Se aplicó la metodología de diseño según la norma VDI 2221 y VDI2225 en el diseño del tipo de compuerta hidráulica con cierre automático de emergencia mediante uso de acumuladores hidráulicos en la descarga de mineral del Ore Bin de 3000 Tn. En la siguiente tesis se describe todos los principios del sistema de descarga del mineral proveniente del circuito chancado, los factores y parámetros que influyen en la operación de abertura...

The Southeast Pacific comprises two Large Marine Ecosystems, the Pacific Central-American Coastal and the Humboldt Current System; and is one of the less well known in the tropical subregions in terms of biodiversity. To address this, we compared DNA barcoding repositories with the marine biodiversity species for the Southeast Pacific. We obtained a checklist of marine species in the Southeast Pacific (i.e. Colombia, Ecuador, Chile, and Peru) from the Ocean Biodiversity Information System (OBIS) database and compared it with species available at the Barcoding of Life Data System (BOLD) repository. Of the 5504 species records retrieved from OBIS, 42% of them had at least one registered specimen in BOLD (including specimens around the world); however, only 4.5% of records corresponded to publicly available DNA barcodes including specimens collected from a Southeast Pacific country. The low...

In this paper, we propose a novel Superimposed Training (ST) technique for Orthogonal Frequency Division Multiplexing (OFDM) systems, where data and training signals are divided in orthogonal code domains in order to mitigate the interference between them. The data signal is partitioned into disjoint bins, which are spread using orthogonal codes and multiplexed in code domain. Then, the new data signal is added to the spread training signal. This novel proposal, named Spread Spectrum Orthogonalization (SSO), exploits these properties to outperform conventional schemes in terms of channel estimation reliability and symbol detection performance, with a lower complexity. Moreover, it turns out to be robust against narrowband interferences.