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Design Multitasking Device to Protect and Control of Electrical Home Appliances

Jabbar Shatti Jahlool
International Journal of Electronics and Telecommunications | 2022 | vol. 68 | No 1 | 97-102 | DOI: 10.24425/ijet.2022.139854
Keywords protection system arduino board control system national grid electrical appliances automatic phase selector
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Abstract

In this research, a multi-tasking protection and control device has been designed and implemented has the ability to control and manage automatically the supply of electrical power from various sources to electric appliances connected to the light loading line (3L). At the same time, providing comprehensive protection for the appliances by delaying the supply of power for short period of time during the moment of conversion from one source to other in order to protect it from damage. The mechanism working of the proposed device depends on detecting the problem, diagnosing it and choosing the appropriate solution for it, and then organizing the supply from the appropriate source, and as a result ensure power supply to home appliances.
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Authors and Affiliations

Jabbar Shatti Jahlool
1
  1. Dijlah University College, Computer Technique's Engineering Department, Baghdad, Iraq

Design of thermoelectric radiant cooling – photovoltaic panels system in the building

Israa Ali Abdulghafor Mohannad Jabbar Mnati
Archives of Thermodynamics | 2022 | vol. 43 | No 4 | 85-108 | DOI: 10.24425/ather.2022.144407
Keywords Thermoelectric panels cooling capacity Numerical calculations PV system
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Abstract

In this study, a theoretical model is presented to investigate the performance of a thermoelectric (TE) radiant cooling system combined with photovoltaic (PV) modules as a power supply in a building with an ambient temperature reaching more than 45ºC. The combined system TE/PV performance is studied under different solar radiation by using the hourly analysis program and photovoltaic system software. The thermal and electric characteristics of TE are theoretically investigated under various supplied voltages using the multi-paradigm programming language and numerical computing environment. Also, a theoretical analysis of heat transfer between the TE radiant cooling system and an occupied zone from the side, and the other side between the TE radiant cooling system and duct zone is presented. The maximum power consumption by TE panels and building cooling load of 130 kW is predicted for May and June. The 145 units of PV panels could provide about 50% of the power required by TE panels. The thermal and electric characteristics of TE panels results show the minimum cold surface temperature of 15ºC at a supplied voltage between 6 V and 7 V, and the maximum hot surface temperature of 62ºC at a supplied voltage of 16 V. The surface temperature difference between supplied current and supplied power increases as supplied voltage increases. At a higher supplied voltage of 16 V, the maximum surface temperature difference between supplied current, and supplied power of 150ºC, 3.2 A, and 48 W, respectively. The cooling capacity increases as supplied voltage increases, at a surface temperature difference of –10ºC and supplied voltage of 16 V, the maximum cooling capacity is founded at about 60 W. As supplied voltage decreases the coefficient of performance increases. The maximum coefficient of performance is about 5 at the surface temperature difference of –10ºC and supplied voltage of 8 V.
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Authors and Affiliations

Israa Ali Abdulghafor
1
Mohannad Jabbar Mnati
1
  1. Middle Technical University, Institute of Technology Baghdad, Al-Za’franiya, 10074, Baghdad, Iraq

Effect of Forge Application on Microstructural and Mechanical Properties of AISI 316 Using Direct Drive Friction Welding Process

A. Jabbar Hassan T. Boukharouba D. Miroud
Archives of Metallurgy and Materials | 2022 | vol. 67 | No 3 | 987-992 | DOI: 10.24425/amm.2022.139692
Keywords Friction welding Forge phase Micro-hardness Ultimate tensile strength X-ray diffraction
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Abstract

Present study introduces effect of forge application and elimination on microstructural and mechanical properties of AISI 316 during friction welding. Temperature measurements, microstructure, micro-hardness, tensile test, scanning electron microscopy and X-ray diffraction were evaluated. Maximum temperature recorded was 819°C while forge was applied between 357°C-237°C. Thermo-mechanically affected zone and highly plastically deformed zone were created at the interface at elimination and application of forge respectively. Ultimate tensile strength decreased and ductility increased when forge elimination compared to forge application. Tensile fracture was occurred adjacent to the welding interface for both cases, though, after forge application, ductile fracture mode and cleavage features through the fingerprints were observed in the fracture morphology. Redistribution and concentration of gamma iron in 111 level after forge application and heat treated of AISI 316.
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Authors and Affiliations

A. Jabbar Hassan
1
T. Boukharouba
1
D. Miroud
2
  1. Houari Boumediene University of Sciences and Technology (USTHB), Advanced Mechanic Laboratory (LMA), BP. 32, El-Alia, 16111 Bab-Ezzoaur, Algiers-Algeria
  2. Houari Boumediene University of Sciences and Technology (USTHB), Materials Science and Process Engineering Laboratory (LSGM), BP. 32, El-Alia,16111 Bab-Ezzoaur, Algiers-Algeria

Prevalence, molecular characterization and antibiogram of Mycoplasma bovis isolated from milk in Pakistan

A. Jabbar M. Ashraf S.U. Rahman M.S. Sajid
Polish Journal of Veterinary Sciences | 2023 | vol. 26 | No 3 | 461–471 | DOI: 10.24425/pjvs.2023.145054
Keywords milk Mycoplasma bovis modified hayflick medium PCR DNA sequencing disc diffusion antibiotic susceptibility
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Abstract

Mycoplasma bovis is a highly contagious pathogen that causes clinical or subclinical mastitis. The present study was aimed for the isolation, molecular characterization and antibiogram determination of M. bovis from raw milk samples. Milk samples were collected randomly from lactating cows and buffaloes from different tehsils of district Faisalabad, Pakistan. Samples were inoculated on modified Hayflick medium and biochemical tests were performed for further confirmation of isolated M. bovis. Out of total 400 milk samples, 184 (46%) samples were found positive for culture method. The 16S-rRNA gene polymerase chain reaction was performed for molecular characterization of isolated M. bovis strains. Out of total 400 milk samples, 240 (60%) positive for M. bovis through PCR method were examined. The 16S-rRNA gene PCR positive isolated M. bovis strains were sequenced and results were compared using Maximum-likelihood method and sequenced strains of M. bovis were aligned and analyzed by Clustal W software. Antibiogram of isolated M. bovis strains was analyzed by disc diffusion assay against eight commonly used antibiotics. Tylosin (30μg) and Tilmicosin (15ug) showed inhibition zones of 32.34 ± 1.10 mm and 17.12 ± 0.93 mm respectively against isolated M. bovis which were found sensitive. Isolated M. bovis was found resistant to other commonly used antibiotics. Statistical analysis revealed that p-value was < 0.05 and the odds ratio was >1.0 at 95% CI. This study complemented the lack of epidemiological knowledge of molecular characterization, comparative effectiveness and resistance trends of isolated M. bovis strains against commonly used antibiotics.
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Bibliography

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Authors and Affiliations

A. Jabbar
1
M. Ashraf
1
S.U. Rahman
1
M.S. Sajid
2
  1. Institute of Microbiology, University of Agriculture, Jail Road, Faisalabad, Punjab 38000, Pakistan
  2. Department of parasitology, University of Agriculture, Jail Road, Faisalabad, Punjab 38000, Pakistan

A study of the climate and human impact on the future survival of the Al-Sannya marsh in Iraq

Amal Jabbar Hatem Ali Adnan N. Al-Jasim Hameed Majeed Abduljabbar
Journal of Water and Land Development | 2021 | No 51 | 168-173 | DOI: 10.24425/jwld.2021.139027
Keywords climate change human impact Landsat 5 Landsat 8 maximum likelihood classification south of Iraq
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Abstract

The marshes are the most abundant water sources and ecological rich communities. They have a significant impact on the ecological and economic well-being of the communities surrounding them. However, climatic changes directly impact these bodies of water, especially those marshes which depend on rainwater and flooding for their survival. The Al-Sannya marsh is used as the example of marshes in Southern Iraq for this study between 1987–2017. The research takes place throughout the winter season due to the revival of marshes in southern Iraq at this time of year. The years 1987, 1990, 1995, 2000, 2007, 2014, 2017 are the focus of this study. Satellite imagery from the Landsat 5 (TM) and Landsat 8 (OLI) and the meteorological parameters affecting the marsh were acquired from NASA. The calculation of the areas of water bodies after classification using satellite imagery is done using the maximum likelihood method and comparing it with meteorological parameters. These results showed that these marshes are facing extinction due to the general change of climate and the interference of humans in utilising the drylands of the marsh for agricultural purposes. The vegetation area can be seen to have decreased from 51.15 km2 in 2000 to 8.77 km2 in 2017.
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Authors and Affiliations

Amal Jabbar Hatem
1
Ali Adnan N. Al-Jasim
1
ORCID: ORCID
Hameed Majeed Abduljabbar
1
  1. University of Baghdad, College of Education for Pure Science (Ibn-Al-Haitham), Department of Physics, Baghdad, Iraq

Vibration attenuation and frequency shifting of beam structures using single and multiple dynamic absorbers in the parallel

Faris A. Jabbar Putti Srinivasa Rao
Archive of Mechanical Engineering | 2023 | vol. 70 | No 4 | 457-480 | DOI: 10.24425/ame.2023.146851
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Abstract

The finite element method (FEM) using Ansys program (APDL) was used in this study to evaluate the idea of tuned vibration absorbers applied to a beam construction for the undamped system. The ideal location for the Dynamic Vibration Absorbers (DVAs) and their numbers to be installed on the fixed-fixed beam in order to lessen beam vibration was also investigated. The DVA was coupled to the fixed-fixed beam vibration node for three vibration modes. The natural frequency and frequency response of the beam were calculated in this study using modal and harmonic analysis, respectively. The vibrational characteristics of the F-F beam with and without DVAs were presented. The simulation results demonstrated that the vibration amplitude decreases in the presence of the DVAs and its reduction depends on the locations of the DVAs and its number. In addition, the attached DVAs affect the structural beam vibration. Depending on the modes of vibration, the vibrational peak is the optimal place to attach DVA.
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Authors and Affiliations

Faris A. Jabbar
1 2
ORCID: ORCID
Putti Srinivasa Rao
1
ORCID: ORCID
  1. Department of Mechanical Engineering, Andhra University, Visakhapatnam, India
  2. Technical Institute of Al-Dewaniyah, Al-Furat Al-Awsat Technical University (ATU), Al-Dewaniyah, Iraq

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