Jordan Journal of Physics最新文献_第6页

Comparing the Dielectric Properties of Papaya Oil with Mineral Insulating Liquid under Temperature Variation 温度变化下木瓜油与矿物绝缘液介电性能的比较

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.2

{"title":"Comparing the Dielectric Properties of Papaya Oil with Mineral Insulating Liquid under Temperature Variation","authors":"","doi":"10.47011/15.4.2","DOIUrl":"https://doi.org/10.47011/15.4.2","url":null,"abstract":"Abstract: The world’s energy requisite has been controlled by petroleum oil for a long time in transportation, household and power sectors. Mineral Transformation Oil (MTO), being an essential insulating material in transformers, has been used for over fifteen decades. MTO application in the power sector could be hazardous to the environment, especially during a transformer explosion which may cause a spill of oil to the soil or water stream. Owing to the threat of MTO to environment aspects, alternative insulating oil with biodegradable characteristics has attracted a lot of devotions in recent studies. To validate the aptness of using Purified Papaya Seed Oil (PPSO) as an insulating fluid in an electric transformer, it is vital to compare dielectric properties of PPSO with that of MTO insulating liquid. This study presents a comparison of temperature effect on dielectric properties of PPSO with the MTO insulating liquid. Breakdown voltage, dissipation factor (tan δ) and dielectric constant were measured by existing established testing standards. The breakdown voltage was determined by IEC 156 standard test method, whereas the dissipation factor and dielectric constant were determined based on IEC 60247 standard test method. The results revealed that the variation of dielectric properties of PPSO due to temperature change was similar to that of MTO. However, the dissipation factors and breakdown voltages of dielectric properties of PPSO were better when compared with those of MTO at higher temperatures, but with a slight decrease in dielectric constants with the increase in temperature.\u0000Keywords: Papaya seed oil, Dissipation factor, Dielectric constant, Breakdown voltage, Temperature, Transformer.\u0000PACS: 77.84. Nh, 88.05. Lg.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43746587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solutions of the N-dimensional Klein-Gordon Equation with Ultra Generalized Exponential–Hyperbolic Potential to Predict the Mass Spectra of Heavy Mesons 具有超广义指数-双曲势的N维Klein-Gordon方程解预测重介子的质谱

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.8

J. Ntibi, E. Inyang, E. Inyang, Eddy S. William, E. E. Ibekwe

引用次数: 0

Improved Structural Bonding, Morphology and Mechanical Properties of Poly (Methy Methacrylate) (PMMA) Thin Film Induced by Chloroform Solvent Casting 氯仿溶剂铸造改善聚甲基丙烯酸甲酯(PMMA)薄膜的结构键合、形貌和力学性能

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.6

{"title":"Improved Structural Bonding, Morphology and Mechanical Properties of Poly (Methy Methacrylate) (PMMA) Thin Film Induced by Chloroform Solvent Casting","authors":"","doi":"10.47011/15.4.6","DOIUrl":"https://doi.org/10.47011/15.4.6","url":null,"abstract":"Abstract: The purpose of this study is to investigate the role of chloroform solvent in improving the structural bonding, surface morphology and mechanical strength of poly (methy methacrylate) PMMA thin film via casting method. The functional group of this material was determined using the Fourier transform infrared (FTIR) spectroscopy and the surface morphology was examined by scanning electron microscopy (SEM). The mechanical properties were further characterized using the tensile testing machine and the hardness tester. SEM images reveal that the PMMA film surface exhibits a large and smooth homogeneous surface area, indicating the formation of a clear and highly transparent optical film. FTIR spectra demonstrate a slight band shift and enhanced intensity of C–O and C-H bands for the PMMA thin film as compared to the one in powder form. The mechanical strength of the present PMMA thin film was found to be much higher than that of the commercially available plastic and PMMA thin films, in which this finding could convey a significant insight in order to boost the availability and functionality of the current polymer applications.\u0000Keywords: PMMA thin film, IR spectra, Young’s modulus, Mechanical stretching, Hardness.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42281342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Low-energy Gamma Unfolding Using NaI(Tl) Geant4 Detector Model and GRAVEL Code 利用NaI(Tl) Geant4探测器模型和GRAVEL码进行低能γ展开

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.9

S. Boukhalfa, R. Khelifi

引用次数: 1

Structural and Dielectric Investigations on Pure and Doped Triglycine Sulfate (TGS) Crystals 纯和掺杂硫酸三甘氨酸（TGS）晶体的结构和介电性质研究

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.5

A. Shaheen, M. Aljarrah, Morad Etier, A. El-Sheikh, F. Salman

引用次数: 0

Assessment of Naturally Occurring Radionuclides with Depths in the Soils of Selected Dumpsites, Ogun State, Southwestern Nigeria 尼日利亚西南部奥贡州选定垃圾场土壤中随深度自然产生的放射性核素的评估

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Jordan Journal of Physics Pub Date : 2022-10-31 DOI: 10.47011/15.4.7

{"title":"Assessment of Naturally Occurring Radionuclides with Depths in the Soils of Selected Dumpsites, Ogun State, Southwestern Nigeria","authors":"","doi":"10.47011/15.4.7","DOIUrl":"https://doi.org/10.47011/15.4.7","url":null,"abstract":"Abstract: The assessment of natural radionuclides in sixteen soil samples obtained across Saje, Oke-Diya, Premier and Ita-Oshin dumpsites, Ogun State, Southwestern Nigeria was carried out to determine the activity concentrations of 238U, 232Th and 40K and to evaluate possible health hazards that these radionuclides may pose to inhabitants. The samples were collected at profile depths of 0-20, 20-40, 40-60 and 60-80 cm using soil auger. The samples were oven-dried for 24 hours and about 600 g post-sieved samples were sealed for thirty days before analysis using a high-purity germanium detector. The results revealed higher concentrations of 40K compared to 232Th and 238U in the soil samples. Saje samples revealed mean concentrations of 238U and 40K above their global averages, while those of 232Th were below the global averages. The mean concentrations of 238U, 232Th and 40K were all above the global averages for Oke-Diya samples. Ita-Oshin and Premier samples recorded mean concentrations that were below the global averages. The estimated radiological parameters for the representative soil samples were all below the permissible limits, except for the absorbed dose rates of Oke-Diya samples. The study areas generally revealed a reasonably high level of soil radionuclides which may continue to increase with the dumpsites' age.\u0000Keywords: Dumpsites, Soil, Natural radionuclides, Activity concentrations, Health risks.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47060970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Kelvin-Helmholtz Instability of Cylindrical Geometry for Micro-dimensional Range of Wavelengths 微维波长范围内圆柱几何的Kelvin-Helmholtz不稳定性

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Jordan Journal of Physics Pub Date : 2022-08-31 DOI: 10.47011/15.3.3

V. Sarychev, S. Nevskii, М. А. Kuznetsov, S. A. Solodsky, D. Il'yashchenko, E. Verkhoturova

引用次数: 0

Aspects Influencing Computer-technology Adoption in Secondary- school Physics Instruction in Jordan 影响约旦中学物理教学采用计算机技术的因素

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Jordan Journal of Physics Pub Date : 2022-08-31 DOI: 10.47011/15.3.1

Salah M. Jaradat, Marwan S. Mousa, Donald Dunn, Casey S. Reason

{"title":"Aspects Influencing Computer-technology Adoption in Secondary- school Physics Instruction in Jordan","authors":"Salah M. Jaradat, Marwan S. Mousa, Donald Dunn, Casey S. Reason","doi":"10.47011/15.3.1","DOIUrl":"https://doi.org/10.47011/15.3.1","url":null,"abstract":"Abstract: This survey researched the aspects that inspire secondary-school physics teachers to utilize computer technology in instruction and learning in four areas of the Hashemite Kingdom of Jordan. To assess the research question, the survey used a quantitative review research strategy utilizing a survey questionnaire comprising of 25 Likert-type scale inquiries to determine physics teachers' perspectives toward utilizing computer technology in physics lesson preparation and delivery techniques. In opposition to what might be anticipated, the results encountered several factors that were not indicators of statistical significance of physics teachers' employment of computer technology in instructing physics: gender; academic degree; school location; normal class size; ways of acquiring technology skills, for example, self-taught and computer courses; instructional style; perceived barriers; and availability of technology resources. The findings verify the expectation that the lack of ICT tools in the Jordanian high-school physics curriculum has an impact on teachers’ job satisfaction, physics lesson preparation and delivery techniques and Tawjihi students' individual learning styles.\u0000\u0000Keywords: ICT, ICT-driven classroom, Rogers' diffusion of innovation theory.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45374749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Piezoelectric Contributions to Parametric Amplification of Acoustical Phonons in Magnetized n-InSb Crystal 压电对磁化n-InSb晶体声声子参量放大的贡献

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Jordan Journal of Physics Pub Date : 2022-08-31 DOI: 10.47011/15.3.2

Mahender Singh, Manjeet Singh

{"title":"Piezoelectric Contributions to Parametric Amplification of Acoustical Phonons in Magnetized n-InSb Crystal","authors":"Mahender Singh, Manjeet Singh","doi":"10.47011/15.3.2","DOIUrl":"https://doi.org/10.47011/15.3.2","url":null,"abstract":"Abstract: Using the hydrodynamic model of semiconductor-plasmas and following the coupled-mode approach, we develop a theoretical formulation to study piezoelectric contributions to parametric amplification of acoustical phonons in magnetized n-InSb crystal. The origin of nonlinear interaction is assumed to lie in effective second-order optical susceptibility arising due to nonlinear induced current density and electrostrictive polarization of the medium. Expressions are obtained for threshold pump amplitude for the onset of parametric process and parametric gain coefficient (well above the threshold pump field) in the presence and absence of piezoelectricity and/or externally applied magnetostatic field. Numerical analysis is made for n-InSb crystal irradiated by 10.6 m pulsed CO2 laser. The piezoelectric contributions to three-wave parametric amplification process are only in the presence of magnetostatic field. The parametric gain coefficient is independent of doping concentration for the cases when either/both piezoelectricity and magnetostatic field are absent. Around resonance (electron-cyclotron frequency ~ pump frequency), the parametric gain coefficient in the presence of piezoelectricity is 102 times higher than that in the absence of piezoelectricity. The analysis establishes the technological potentiality of transversely magnetized n-InSb as the host for parametric devices, like parametric amplifiers and oscillators.\u0000\u0000Keywords: Parametric amplification, Acoustical phonons, Piezoelectricity, Electrostriction, n-InSb crystal.\u0000\u0000PACS numbers: 42.65.-k, 78.55.Cr, 71.38.-k, 52.35.Mw.","PeriodicalId":42562,"journal":{"name":"Jordan Journal of Physics","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44944128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Molecular Ordering and Nematic Character of Nonyloxy Benzoic Acid: Solvent and Thermodynamic Potentials Effect 壬氧基苯甲酸的分子序和向列性质:溶剂和热力学势效应

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Jordan Journal of Physics Pub Date : 2022-08-31 DOI: 10.47011/15.3.8

P. Das, P. L. Praveen

引用次数: 0