Browsing by Subject "monitoring"

A native Android application and a multi-platform web application to monitor solar radiation and the output power of a photovoltaic system were developed, in order to establish which is more efficient using the mobile ...

: In recent years, the technical and economic feasibility of using microalgae and cyanobacteria has been explored for the removal and exploitation of domestic, agricultural and industrial residual effluents with high C, ...

Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system
...
Sánchez Santana, Sharon D. | 2016-12-01

A native Android application and a multi-platform web application to monitor solar radiation and the output power of a photovoltaic system were developed, in order to establish which is more efficient using the mobile device resources. The methodology for Mobile Application Development [MAD] was adopted and free software tools –Android Studio and HTML5– were used. CPU consumption, response time in sending data and memory usage for the execution of the appli-cations, were compared; also, the user experience was evaluated through the 6Ms survey. The transfer time of a data from the server to the mobile application executed in Chrome was 0.887 seconds, the native application transfers a data in 0.853 seconds –both times are within the acceptable ranges, since the acquisition system stores one data every 5 minutes; the ave-rage memory usage was 182 Mb for executing the application in the Chrome browser, while the native application achieved a reduction of 65%, therefore it can be concluded that the native application requires less memory usage for its execution.

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Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia
...
Urbina-Suarez, Nestor Andres | 2021-05-24

: In recent years, the technical and economic feasibility of using microalgae and cyanobacteria has been explored for the removal and exploitation of domestic, agricultural and industrial residual effluents with high C, N and P compounds content. To contribute to the understanding of the process and its technical viability for microalgae growth, the article discusses monitoring, flow determination, and physicochemical characteristics of two types of effluents generated in an experimental farm located in the east of Colombia, before (R1) and after biological treatment (R2). In general, the results showed the reduction of different parameters, such as total dissolved solids (TDS), hardness, salinity and phosphates after treatment with activated sludge. However, the conductivity value obtained in R1 and R2 showed the presence of a pollutant load. These findings can be attributed to the highest concentration of fats and oils in the water during early hours of the day. Finally, although the concentration of nitrates increased from 46.63 to 225.21 mg∙dm–3 and phosphate decreased slightly from 9.65 to 6.21 mg∙dm–3, no inhibition was generated in the microalgae, as evidenced in the growth of the microalgal biomass in effluents after nitrate and phosphate removal above 80%.

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Browsing by Subject "monitoring"

Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system

Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia

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Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system

Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia

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Browsing by Subject "monitoring"

Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system ﻿

Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia ﻿

Envíos recientes

Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system

Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia

Portales Institucionales

Comparison of performance between a native app and a mobile web application for monitoring a photovoltaic system

Prospects for using wastewater from a farm for algae cultivation: The case of Eastern Colombia