International journal of physical sciences and engineering
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Quality management of electricity service with photovoltaic generation distributed in rural area
Get PDFThe need to search for new energy models that are integrally sustainable for the present and the future, especially photovoltaic solar energy that would contribute to a radical change in Manabí Ecuador where populations are living in rural areas away from the electricity grid, which causes impacts negative economic and in some rural electrification projects, and low quality have oriented national policies towards the search for the best alternatives, such as renewable sources, that is, the efficient use of resources and the increase in reliability, coverage, and quality in the electrical supply that Manabí has. Emphasizing "good living" as an objective of the Ecuadorian government, meeting its needs for the development of its agricultural, artisanal, commercial and industrial activities. Thus, avoiding that due to lack or poor quality of energy that prevents them from being able to carry out an activity typical of the countryside or rural areas, these people migrate to the cantonal headwaters, further thickening the cords of misery. The work presents an analysis on the quality of the electric service in isolated areas of the Chone municipality, proposing solutions that can improve the quality of the service, through sustainable energy planning using indigenous resources from the territory
Rare earth ion contribution in barium hexaferrite structure to a change of magnetocrystalline anisotropy to improving its magnetic properties
Get PDFRare earth ion contribution in barium hexaferrite structure to a change of magneto-crystalline anisotropy to improving its magnetic properties has been investigated. A series of simples of Ba1-xCexFe12O19 with the variation of x (x = 0.0-0.5) were prepared by solid-state reactions using mechanical deformation techniques. The oxide materials used for sample preparation are BaCO3, Fe2O3, and CeO2 with the ratio of material used is adjusted to the stoichiometric calculation for variations of Ce4+ substitution. The phase identification results show that the reaction took place perfectly and successfully formed a single-phase Ba1-xCexFe12O19 namely at the composition x = 0 and x = 0.1. while for the composition x> 0.1, it is formed in three phases. Particle morphology in the composition x = 0 and x = 0.1 has very good and uniform particle homogeneity across the surface of the sample in the form of polygonal particles. So the substitution of Ce atoms into the barium hexaferrite structure is only able at the composition limit x = 0.1. In the composition x = 0.1 has been able to increase the coercivity and magnetization fields. It can be concluded that the permanent magnet with the composition Ba0,9Ce0.1F12O19 gives the best results
Identification of the groundwater existence by geoelectrical method
Get PDFResearch has been carried out to identify the presence of subsurface water in Selulung Village, Kintamani District, Bangli Regency using 2D geoelectric methods. The work process of this research is the first to collect data directly by using a geoelectric device with Wenner configuration. Electric currents are injected from the surface to the subsurface through the current electrodes which are put on the earth's surface. The collected data is then processed using the Res2Din software version 3.71.118. The software results in the form of 2D images are direct lateral images of subsurface structures. From the three trajectories identified, namely at the coordinates 8°12'18.7"S 115°16'08.3"E the lowest resistivity value was 178 Ohm m with a depth of 10 m which was thought to be a rock layer with surface water content. On line 2 at coordinates 8°12'16.1"S 115°16'09.7"E the resistivity value is 6 ohm.m up to 660,000 ohm.m, the maximum depth obtained is 24 m. This line is thought to be a water-bearing layer because the value of resistance is low. Line 3 which is in the coordinates 8°12'16.3"S 115°15'50.0"E the distribution of resistivity values varies from 42 - 9,400 Ohm m
Design and construction of an industrial ship conditioning system
Get PDFThis project is based on the design and construction of an industrial air conditioning system for the improvement of the working thermal comfort of workers that for various reasons there is the trend of the increase in body temperature are these by machines, equipment or the same work activities, which affects the productive performance and possible health risks. During development, the selection of mechanical equipment such as the fan, water pump, ventilation transport ducts is studied with high rates of energy efficiency. In the light of the above, the environmental economic partner alternative is chosen to implement the evaporative conditioning system, conducive to working in open places to lower the temperature by labor and technology installed in the production areas, as well as the extraction of fumes derived from production processes. The importance of the evaporative conditioning system is to derive the appropriate mechanisms to take advantage of the surface heat transfer of a panel and copper and aluminum coil using water, and thus take advantage of its temperature differential reaching 25oC, with an average humidity of 66% and energy consumption of 0.29 KW/h
Proposal of photovoltaic system for house
Get PDFIn this work, the design project of a photovoltaic system to feed a house is shown, based on a demand study and its general characteristics, the available area for the assembly of the modules, the geographic location, and the meteorological data of the place. With this information, the relevant calculations were carried out to ensure that the installation provides the energy necessary to cover the consumption of the home and, also, delivers the excess energy to the grid. The PVsyst software was used to design the photovoltaic system. To check the advantages of implementing the photovoltaic arrangement, the benefit-cost relationship was evaluated, conducting an environmental impact analysis taking into account the reduction of CO2 emissions into the atmosphere and the tons of fossil fuel left to burn when generating electricity. With this power source, making it convenient to carry out the installation
Potential risk of cancer in body organs as result of torak CT-scan exposure
Get PDFA concise and factual abstract Computed Tomography (CT)-Scan is a radiological diagnostic tool using a computer to reconstruct data from the absorption of a particular tissue or organ that has been penetrated by X-rays to form an image (imaging). The use of scanning equipment (scan) that emits radiation has the potential to cause quite serious impacts. According to researchers from Canada, Britain, and the United States published in The Lancet Medical Journal (2012), it is stated that children who are exposed to CT-Scans can be up to three times more likely to develop blood, brain, or bone cancer later in life. It further states a potential cancer risk exists due to the ionizing radiation used in CT-Scans, especially in children who are more sensitive to radiation than adults. A chest CT-Scan is one of the most frequently performed parts of the examination because this section contains many vital organs. The analysis showed that the effective dose of the liver was 0.241 mGy, breast, and lung was 0.724 mGy. The risk of cancer in each of the liver, breast, and lung organs reaches 0.038%, 1.160%, and 1,200%
Potential energy of plant biomass: banana, coconut, cacao and corn
Get PDFIn this document, a study was carried out on the energy potential of plant biomass in the Portoviejo canton, since climate change is not a utopia, but the reality. Throughout this study, an overview of the capacity in biomass at the national, provincial and cantonal level (Portoviejo) was presented, a study on the culture of banana, cocoa, coconut, and corn was made since it is important to know if the canton can respond to the biomass demand of the selected plants. Then the socio-economic and environmental impacts were analyzed in a general way
Spectral reflectance and principal component analysis on the distribution of clove vegetation using Landsat 8
Get PDFThis paper discusses the distribution of clove vegetation in Buleleng Regency, Bali using a vegetation index extracted from Landsat 8 imagery based on spectral reflectance and Principal Component Analysis (PCA). Data analysis used the Normalized Difference Vegetation Index (NDVI) transformation and PCA band transformation. Adjustment of the position of clove vegetation in the image is determined by the measurement results of the clove coordinate sample in the field. The results showed that the accuracy of the area of ?? clove vegetation distribution as measured as a percentage comparison to the area data of the Forestry and Plantation Service, Buleleng Regency, Bali in 2014, was 97.066% for the spectral reflectance-based vegetation index (NDVIref) and 97.072% for those based on PCA ( NDVIpca). The distribution class category with the dominant area identified into heavy class (NDVIref) of 7841.25 ha and moderate class (NDVIpca) of 7591.77 ha. There is a difference in the two determinant coefficient values ?? (R2), which is 0.2407% and at 5% significance, the variants of the B4 and B5 spectral reflectance image variable data variants, as well as the C1 and C2 component image variables simultaneously, can affect the NDVI vegetation index
Sustainable development and renewable energy sources in milagros community
Get PDFThe exploitation and use of renewable energies have grown significantly, where the volatility of the prices of specific fuels, the fight against climate change, and the search for new business opportunities are many of the causes that have fueled this growth and development. The objective of this research was to carry out an evaluative study on renewable energies and the sustainable development of the inhabitants of rural areas in the province of Manabí. For this, it was necessary to carry out a study of the demand for electricity consumption in the El Milagro community, Riochico parish; Likewise, it was necessary to analyze and evaluate the different renewable energy alternatives, identifying if there are projects of this type implemented in that rural area, based on identifying the area where the system can be installed. The methodology to be applied was bibliographic and field, with techniques for collecting quantitative and qualitative information, textual theory, with exploratory, descriptive, analytical, and prepositive methods of observation, surveys, semi-structured interviews, bibliographic, and data tabulation. The survey was applied as research instruments
Quality control of X-rays with collimator and the beam alignment test tool
Get PDFThis test aims to determine and analyze the accuracy of the collimator beam with an X-ray beam, to perform two test methods, namely the suitability of the alignment test tool with an X-ray beam and the suitability of the x-ray beam area using the beam alignment test tool. Collimator tests such as the Illuminance Test, Shutter Efficiency and Collimator Similarity or the suitability of the collimator field area to the X-ray beam field area within a tolerance of ? 2% Focus Film Distance (FFD) which has been determined by the Minister of Health Decree No. 1250/SK/XII/2009. This was carried out using FFD at a distance of 100 cm and a variation of the exposure factor which was distinguished by the voltage ranging from 50, 60, 70, 80, and 90 kV. The collimator gap efficiency test still functions efficiently/effectively, which is shown in the film there is no radiation leakage/blackening effect on the film