Journal La Multiapp

Journal Information
ISSN / EISSN : 2716-3865 / 2721-1290
Published by: Newinera Publisher (10.37899)
Total articles ≅ 40
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Latest articles in this journal

Noor Abbas, Mohamed Ibrahim Shujaa, Entithaar Mhwes Zghair
Published: 27 September 2021
Journal La Multiapp, Volume 1, pp 1-13; https://doi.org/10.37899/journallamultiapp.v1i4.394

Abstract:
Internet of things (IoT) becomes the backbone of the advanced countries and it has a real contribute to exchange the traditional style or way of practical life, even personal life into smart style, with (IoT) technology the life become more and more easy and professional. internet of things achieves various applications coordinate with sensors and standard protocols to apply what is called machine -to- machine connection (M2M), in this paper we will talk more about the concept of (M2M), the main component of internet of things and finally the common protocols that is used in network, in addition to that this work present an IOT operation with processing system using camera for capturing image and Xilinx system generator(XSG)models for designing image processing algorithms and the result of the processing is an image with black and white for edge detection and Thresholding models and gray color image for gray enhancement model.
Lucian Paunescu, Sorin Mircea Axinte, Marius Florin Dragoescu, Felicia Cosmulescu
Published: 27 September 2021
Journal La Multiapp, Volume 1, pp 14-26; https://doi.org/10.37899/journallamultiapp.v1i4.415

Abstract:
The paper presents experimental results obtained in the manufacturing process of a glass foam by adequate correlation between its physical and thermal properties (density, porosity, thermal conductivity) and mechanical (compressive strength) by a slight controlled overheating of the foamed material. Using a powder mixture of glass waste (87-91.5 %), coal fly ash (3-9 %) and silicon carbide (4-5.5 %) microwave heated at 935-975 ºC by this unconventional technique, constituting the originality of the work, was obtained a glass-ceramic foam with moderate compressive strength (1.8-2.6 MPa) and very low thermal conductivity (0.058-0.070 W/m·K). The material overheating generated a homogeneous porous structure characterized by closed cells with relatively large dimensions (without the tendency to join neighboring cells) making it difficult to transfer heat across the material. The foamed product is suitable for the manufacture of thermal insulation blocks for the inner or outer walls of the building without excessive mechanical stress, being an advantageous alternative by comparison with known types of polymeric or fiberglass thermal insulation materials.
Rafaa Amen Kazem, Jamila H. Suad, Huda Abdulaali Abdulbaqi
Published: 27 September 2021
Journal La Multiapp, Volume 1, pp 27-33; https://doi.org/10.37899/journallamultiapp.v1i4.444

Abstract:
Super Resolution is a field of image analysis that focuses on boosting the resolution of photographs and movies without compromising detail or visual appeal, instead enhancing both. Multiple (many input images and one output image) or single (one input and one output) stages are used to convert low-resolution photos to high-resolution photos. The study examines super-resolution methods based on a convolutional neural network (CNN) for super-resolution mapping at the sub-pixel level, as well as its primary characteristics and limitations for noisy or medical images.
Lucian Paunescu, Sorin Mircea Axinte, Marius Florin Dragoescu, Felicia Cosmulescu
Published: 27 September 2021
Journal La Multiapp, Volume 2, pp 14-26; https://doi.org/10.37899/journallamultiapp.v2i4.415

Abstract:
The paper presents experimental results obtained in the manufacturing process of a glass foam by adequate correlation between its physical and thermal properties (density, porosity, thermal conductivity) and mechanical (compressive strength) by a slight controlled overheating of the foamed material. Using a powder mixture of glass waste (87-91.5 %), coal fly ash (3-9 %) and silicon carbide (4-5.5 %) microwave heated at 935-975 ºC by this unconventional technique, constituting the originality of the work, was obtained a glass-ceramic foam with moderate compressive strength (1.8-2.6 MPa) and very low thermal conductivity (0.058-0.070 W/m·K). The material overheating generated a homogeneous porous structure characterized by closed cells with relatively large dimensions (without the tendency to join neighboring cells) making it difficult to transfer heat across the material. The foamed product is suitable for the manufacture of thermal insulation blocks for the inner or outer walls of the building without excessive mechanical stress, being an advantageous alternative by comparison with known types of polymeric or fiberglass thermal insulation materials.
Rafaa Amen Kazem, Jamila H. Suad, Huda Abdulaali Abdulbaqi
Published: 27 September 2021
Journal La Multiapp, Volume 2, pp 27-33; https://doi.org/10.37899/journallamultiapp.v2i4.444

Abstract:
Super Resolution is a field of image analysis that focuses on boosting the resolution of photographs and movies without compromising detail or visual appeal, instead enhancing both. Multiple (many input images and one output image) or single (one input and one output) stages are used to convert low-resolution photos to high-resolution photos. The study examines super-resolution methods based on a convolutional neural network (CNN) for super-resolution mapping at the sub-pixel level, as well as its primary characteristics and limitations for noisy or medical images.
Noor Abbas, Mohamed Ibrahim Shujaa, Entithaar Mhwes Zghair
Published: 27 September 2021
Journal La Multiapp, Volume 2, pp 1-13; https://doi.org/10.37899/journallamultiapp.v2i4.394

Abstract:
Internet of things (IoT) becomes the backbone of the advanced countries and it has a real contribute to exchange the traditional style or way of practical life, even personal life into smart style, with (IoT) technology the life become more and more easy and professional. internet of things achieves various applications coordinate with sensors and standard protocols to apply what is called machine -to- machine connection (M2M), in this paper we will talk more about the concept of (M2M), the main component of internet of things and finally the common protocols that is used in network, in addition to that this work present an IOT operation with processing system using camera for capturing image and Xilinx system generator(XSG)models for designing image processing algorithms and the result of the processing is an image with black and white for edge detection and Thresholding models and gray color image for gray enhancement model.
Dewn Innajie, Coolen Laure, Mecandily Gercia
Published: 12 August 2021
Journal La Multiapp, Volume 2, pp 40-43; https://doi.org/10.37899/journallamultiapp.v2i3.392

Abstract:
The goal of this research is to develop a small-capacity power generator that may be used as an alternative energy source for home use, particularly in rural regions. The hydraulic ram pump was included in the design as a critical component for extending the duration of power production by turbines and generators, which was achieved via innovative engineering. During the manufacturing of hydraulic ram pumps, there are three test variants, which are comprised of the intake pipe length (2.6m), the output pipe height (2.5m, 3.2m, and 3.7m), and the outlet pipe diameter (3/4") of each pump. As a consequence of these findings, the average maximum performance of the hydroelectric power plant with the hydraulic ram pump system in this research was achieved at a reservoir height of 2.7 (m), with a voltage resulting in 7.3 (volts) (volts). With a turbine diameter of 46 cm, an intake pipe diameter of 3/4 cm, and a turbine inlet discharge of 7.2 liters per minute, the generator can produce electrical energy to the tune of 7.3 kilowatt hours (volts).
Nhi Thrinch, Honh Thung
Published: 12 August 2021
Journal La Multiapp, Volume 2, pp 33-39; https://doi.org/10.37899/journallamultiapp.v2i3.393

Abstract:
Inundation and floods are caused by a combination of factors including lower rain catchment areas, decreasing infiltration rates, and an uneven distribution of rainfall throughout the year, which all combine to create flooding and inundation issues. The alternative option is to install an efficient drainage system that is ecologically friendly, since in addition to its role of accommodating and draining water, it also has the additional purpose of absorbing water into the subsurface soil layer. A pore hole is created at the bottom of the drainage channel in order for the water to be absorbed. There was a desire to investigate the impact of soil texture on the rate of infiltration, therefore this research was conducted. Three kinds of soil were utilized as infiltration medium, namely sandy loam, loam, and clayey loam, all of which were found in the surrounding area. In addition, there are three variants of hole spacing, namely 16 cm, 32 cm, and 48 cm, as well as three variations of flow rate, namely 400 cm3/s, 1500 cm3/s, and 2500 cm3/s, among others. As a consequence of laboratory studies, it has been shown that the impact of changes in flow rate on infiltration discharge is inversely proportional to the flow rate, i.e., the higher the flow rate, the smaller the infiltration discharge that occurs. The reason for this is because it is influenced by the flow velocity
Oshin Ola Austin
Published: 11 August 2021
Journal La Multiapp, Volume 2, pp 16-32; https://doi.org/10.37899/journallamultiapp.v2i3.383

Abstract:
The Nigerian power problem resulted to incessant and erratic supply of electricity and this has destroyed many industrial processes in the country. It has reduced productivity and has increased unemployment rate in the country to over 50million (this figure is over 70% of Nigerian youths). This has led many of the youths in the country to crime. It has led to the deaths of many innocent people in the country. As of 2016, the electricity energy consumption in the world from the world fact book revealed that the average power per capita (watts per person) in the United States is 1,377 Watts. In Canada, it is 1704 Watts per person and in South Africa; it is 445 Watts per person and in Australia, average power per capita (watts per person) is as high as 1,112 Watts. Whereas, the average electricity consumed in watts per person in Nigeria is just 14 Watts. Unfortunately, this has put the country in a rank of 189 out of 219 countries estimated. In this research work, a Hybrid Electric Power System (HEPS) which comprises Hydro Electric Power Plant (HEPP) and Diesel Generator (DG) was modelled and a control algorithm was established to improve the performance of the system. Hybrid power system mathematical and Simulink models were developed. The output power of the developed Simulink model was be optimized using optimum power point optimization techniques and control algorithms. Simulink models of the two components of the Hybrid Electric Power System were produced using MATLAB/Simulink software. The develop Simulink models was interconnected and final model was developed. The results obtained revealed that the problems associated with conventional methods of power generation was overcomed by the development of this renewable and non-renewable energy resources Hybrid Electric Power System (HEPS) models.
Lucian Paunescu, Sorin Mircea Axinte, Bogdan Valentin Paunescu
Published: 11 August 2021
Journal La Multiapp, Volume 2, pp 1-9; https://doi.org/10.37899/journallamultiapp.v2i3.369

Abstract:
An innovation cold manufacturing method of glass foams is presented in the paper. Traditional foaming agents used in conventional expansion processes of glass waste at high temperature were substituted with aluminium powder in aqueous solution of calcium hydroxide, which releases hydrogen forming gas bubbles in the viscous sludge and then, by solidification, a porous structure typical for the glass foam. The manufactured foam is adequate for using as a thermal insulation material for inner wall of buildings, having the apparent density of 0.31 g·cm-3, the thermal conductivity of 0.070 W/m·K and the compressive strength of 1.32 MPa. The process originality is the use of recycled aluminum waste, melted by an own microwave heating technique and sprayed with nitrogen jets. The process effectiveness is remarkable in economical and energy terms.
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