M. Bawa'Aneh | Yarmouk University (original) (raw)

Papers by M. Bawa'Aneh

Sehyun Kwak, Jakob Svensson, Mathias Brix, M. S. Bawa’aneh, Young-chul Ghim, and JET Contributors... more Sehyun Kwak, Jakob Svensson, Mathias Brix, M. S. Bawa’aneh, Young-chul Ghim, and JET Contributors EUROfusion Consortium, JET, Culham Science Centre, Abingdon, OX14 3DB, UK Department of Nuclear and Quantum Engineering, KAIST, Daejeon, Korea Max-Planck-Institut fur Plasmaphysik, Greifswald, Germany CCFE, Culham Science Centre, Abingdon, UK Department of Applied Mathematics and Sciences, Khalifa University, UAE Li-BES (Lithium Beam Emission Spectroscopy) data has been analysed by Bayesian modelling at JET (Joint European Torus). Li-BES measures emission profiles from neutral lithium beam penetrating the JET plasma at 26 different radial positions. Lithium beam data have ~15 ms temporal resolution and ~1 cm spatial resolution [1,2]. The Bayesian model built for Li-BES data analysis is based on a full collisional-radiative model [3-5] that describes interactions between neutral lithium atoms and plasma particles including both electrons and ions [6,7]. Gaussian processes [8] are used on...

Superlattices and Microstructures

Radiation Protection Dosimetry, 2005

The natural radioactivity due to the presence of (226)Ra, (232)Th and (40)K in selected building ... more The natural radioactivity due to the presence of (226)Ra, (232)Th and (40)K in selected building materials used in Jordanian building constructions has been measured using gamma-ray spectrometer with a Hyper Pure germanium detector. The average activity concentrations observed in different building materials ranged from 27.7 +/- 7.5 to 70.4 +/- 2.8, 5.9 +/- 0.67 to 32.9 +/- 3.9 and 30.8 +/- 0.87 to 58.5 +/- 1.5 for (226)Ra, (232)Th and (40)K, respectively. The activity concentrations of (226)Ra measured in fine aggregates was found to be among the highest values obtained in this work. The ranges of the calculated Ra-equivalent were found to be lower than those values recommended for construction materials (370 Bq kg(-1)). The average internal and external hazard indices were found to be <1. The average of the calculated annual gonadal equivalent dose was found to be 198 microSv y(-1). Results indicate no significant radiological hazards arise from using such materials in building construction.

International Journal of Nanomanufacturing, 2009

ABSTRACT

With the Thomson scattering (TS) system in KSTAR, temporal evolution of electron temperature (T_e... more With the Thomson scattering (TS) system in KSTAR, temporal evolution of electron temperature (T_e) is estimated using a weighted look-up table method with fast sampling (1.25 or 2.5 GS/s) digitizers during the 2014 KSTAR campaign. Background noise level is used as a weighting parameter without considering the photon noise due to the absence of information on absolute photon counts detected by the TS system. Estimated electron temperature during a relatively quiescent discharge are scattered, i.e., 15% variation on T_e with respect to its mean value. We find that this 15% variation on T_e cannot be explained solely by the background noise level which leads us to include photon noise effects in our analysis. Using synthetic data, we have estimated the required photon noise level consistent with the observation and determined the dominant noise source in KSTAR TS system.

دراسة ميدانية لبعض التشوهات القوامية لدى تلاميذ المرحلة الأساسية الدنيا بمدارس الحصن الخاصة / الأ... more دراسة ميدانية لبعض التشوهات القوامية لدى تلاميذ المرحلة الأساسية الدنيا بمدارس الحصن الخاصة / الأردن = Field Study of Some Posture Deformity In The First Four Grades Of private Schools in AL-Huson، للحصول على النص الكامل يرجى زيارة مكتبة الحسين بن طلال في جامعة اليرموك او زيارة موقعها الالكتروني

Contemporary Educational Technology, 2021

In the current circumstances, the second wave of COVID-19 Pandemic is spreading and we seem to ha... more In the current circumstances, the second wave of COVID-19 Pandemic is spreading and we seem to have to live longer with most of the urgent measures taken in early 2020 to fight the spread out of the pandemic; of which is school closure. The present study aims at investigating students' satisfaction, attitudes and challenges in UAE public schools during the distance learning time of the third trimester of the academic year 2019-2020. The study also aims to measure differences of satisfaction level, attitudes, and challenges across gender and geographic places of residence within the UAE. Data collection started eight weeks after the commencement of the distance learning process and continued for two weeks. The first eight weeks that preceded data collection witnessed a continuous update of the, previously rich and well established, educational plans in line with continuous development plan for students and instructors that included intensive training for students and instructors on the use of up-to-date educational technologies. That has reflected on the results of the study, where the student satisfaction level, attitudes and challenges were found to lie within the "strong" category indicating high satisfaction level, positive attitude, and minimum faced challenges, with statistically significant differences in the mean across gender and residency for some cases. Such positive result is directly related to the fact that students of the UAE public schools were partially exposed to electronic learning even before the pandemic, the tremendous efforts of the ministry of education to guarantee smooth transfer to full distance learning after the outbreak of the pandemic, and the well established infrastructure of the country.

2015 IEEE International Conference on Plasma Sciences (ICOPS), 2015

Summary form only given. After our previous advancement for the Appleton-Hartree theory by extend... more Summary form only given. After our previous advancement for the Appleton-Hartree theory by extending the existing theory to include the plasma thermal effect, we present enhanced absorption rates for microwaves within the C-band from warm plasma. Thermal effects are important in electromagnetic wave propagation in the ionosphere as well as in the emerging applications of stealth technology.The derivation of the magneto-ionic dispersion equation in warm plasma immersed in a uniform magnetic field was presented in a previous work, where the obtained expressions extend the well known Appleton-Hartree, magneto-ionic formula of stationary cold plasma to the case of warm plasma. In the present work, we study the propagation constant and reflection coefficient for characterizing wave propagation in magnetized, warm plasma. To demonstrate this effect, we give a numerical example of the developed theory for the typical parameters that may exist in stealth technology applications. It is well known that in cold plasma one of the two forward propagating modes is weakly attenuated while the other is weakly amplified. In comparison, in warm plasma, we observed that the weak damping of one mode in the cold plasma is absolutely enhanced by the thermal effect, while the second (which is weakly amplified in cold plasma) follows an anomalous behavior around resonant frequencies with enhanced attenuation and enhanced amplification regions. The present work considers these effects in warm plasma and shows enhanced absorption of the microwaves, due to the thermal effect, from plasma near a metallic wall.

We report on a "Collaborative Workshop Physics" instructional strategy to deliver the f... more We report on a "Collaborative Workshop Physics" instructional strategy to deliver the first IE calculus-based physics course at Khalifa University, UAE. To these authors' knowledge, this is the first such course on the Arabian Peninsula using PER-based instruction. A brief history of general university and STEM teaching in the UAE is given. We present this secondary implementation (SI) as a case study of a novel context and use it to determine if PER-based instruction can be successfully implemented far from the cultural context of the primary developer and, if so, how might such SIs differ from SIs within the US. With these questions in view, a pre-reform baseline of MPEX, FCI, course exam and English language proficiency data are used to design a hybrid implementation of Cooperative Group Problem Solving. We find that for students with high English proficiency, normalized gain on FCI improves from <g> = 0.16+/-0.10 pre- to <g> = 0.47+/-0.08 post-reform, i...

Journal of Plasma Physics, Jun 22, 2006

ABSTRACT

Curie-Weiss Behaviour in The Compounds REBa2Cu3O7 ( RE = Rare Earth ) andBi1.7 Pb0.3Sr2Ca2Cu3O10،... more Curie-Weiss Behaviour in The Compounds REBa2Cu3O7 ( RE = Rare Earth ) andBi1.7 Pb0.3Sr2Ca2Cu3O10، للحصول على النص الكامل يرجى زيارة مكتبة الحسين بن طلال في جامعة اليرموك او زيارة موقعها الالكتروني

ABSTRACT form only given. Thermal effects may be of high degree of importance on electromagnetic ... more ABSTRACT form only given. Thermal effects may be of high degree of importance on electromagnetic wave propagation in the ionosphere as well as in the emerging applications of stealth technology. A further development for the Appleton-Hartree theory may be made by extending the existing theory to include the plasma thermal effects. In this work, we present the derivation of the magneto-ionic dispersion equation and the corresponding index of refraction, propagation constant and reflection coefficients for characterizing wave propagation in warm plasma immersed a uniform magnetic field that could be self generated or externally applied. The obtained expressions extend the well known Appleton-Hartree, magneto-ionic formula of stationary cold plasma to the case of warm plasma. To demonstrate the effects of plasma temperature on wave propagation and attenuation, a numerical example of the developed theory has been given for typical parameters that may exist in stealth technology applications. Electron temperature range from cold plasma limit up to vTh ~ 0.05c, where vTh represents the electron thermal energy and c the speed of light, and a collisional plasma frequency ranges within (10-3,10+3), corresponding to the vTh range (0,0.05c). It is well known that in cold plasma one the two forward propagating modes is weakly attenuated while the other weakly amplified. By comparing the propagation constant obtained for warm plasma with that for the cold plasma complex propagation constant of the classical AppletonHartree theory, we observed that the weak damping of one mode in the cold plasma is absolutely enhanced by the thermal effect, while the second (which is weakly amplified in cold plasma) follows an anomalous behavior around resonant frequencies with enhanced attenuation and enhanced amplification regions. Also, we apply the modified theory on calculating EM - wave absorption rates from plasma near a metallic wall and found that the thermal effect enhances the wave abs- rption.

IEEE Transactions on Plasma Science

A photosensitizer as potential anticancer drug of sodium zinc(II)-2,9,16,23phthalocyanine tetraca... more A photosensitizer as potential anticancer drug of sodium zinc(II)-2,9,16,23phthalocyanine tetracarboxylate (ZnPc(COONa)4) was investigated by means of steady-state spectroscopies in aqueous solution. The photosensitizer was found to be of far red-absorbing photosensitizer with a considerable singlet oxygen quantum yield (ΦΔ = 0.28). Upon illumination ZnPc(COONa)4 could be considered a stable with photobleaching constant of 1.8×10cmJ. Its photodynamic dose was found to be 1389 Jcm. The mechanism for the photodegradation of ZnPc(COONa)4 involves both singlet oxygen and radicals (mechanism of type II and type I).

Canadian Journal of Physics, 2013

The convective amplification of filamentation instability (FI) of electromagnetic waves traveling... more The convective amplification of filamentation instability (FI) of electromagnetic waves traveling along the density ramp of a magnetized plasma is investigated. The generalized amplification factor of the instability in the presence of a DC–magnetic field is derived by obtaining the governing equations of the instability and using the slow-coupling technique to obtain an analytical expression for the amplification factor in weakly magnetized plasma. The result shows enhancement of the convective FI gain by the magnetic field, where the enhancement is stronger for lower equilibrium plasma density values.

Sehyun Kwak, Jakob Svensson, Mathias Brix, M. S. Bawa’aneh, Young-chul Ghim, and JET Contributors... more Sehyun Kwak, Jakob Svensson, Mathias Brix, M. S. Bawa’aneh, Young-chul Ghim, and JET Contributors EUROfusion Consortium, JET, Culham Science Centre, Abingdon, OX14 3DB, UK Department of Nuclear and Quantum Engineering, KAIST, Daejeon, Korea Max-Planck-Institut fur Plasmaphysik, Greifswald, Germany CCFE, Culham Science Centre, Abingdon, UK Department of Applied Mathematics and Sciences, Khalifa University, UAE Li-BES (Lithium Beam Emission Spectroscopy) data has been analysed by Bayesian modelling at JET (Joint European Torus). Li-BES measures emission profiles from neutral lithium beam penetrating the JET plasma at 26 different radial positions. Lithium beam data have ~15 ms temporal resolution and ~1 cm spatial resolution [1,2]. The Bayesian model built for Li-BES data analysis is based on a full collisional-radiative model [3-5] that describes interactions between neutral lithium atoms and plasma particles including both electrons and ions [6,7]. Gaussian processes [8] are used on...

Superlattices and Microstructures

Radiation Protection Dosimetry, 2005

The natural radioactivity due to the presence of (226)Ra, (232)Th and (40)K in selected building ... more The natural radioactivity due to the presence of (226)Ra, (232)Th and (40)K in selected building materials used in Jordanian building constructions has been measured using gamma-ray spectrometer with a Hyper Pure germanium detector. The average activity concentrations observed in different building materials ranged from 27.7 +/- 7.5 to 70.4 +/- 2.8, 5.9 +/- 0.67 to 32.9 +/- 3.9 and 30.8 +/- 0.87 to 58.5 +/- 1.5 for (226)Ra, (232)Th and (40)K, respectively. The activity concentrations of (226)Ra measured in fine aggregates was found to be among the highest values obtained in this work. The ranges of the calculated Ra-equivalent were found to be lower than those values recommended for construction materials (370 Bq kg(-1)). The average internal and external hazard indices were found to be &lt;1. The average of the calculated annual gonadal equivalent dose was found to be 198 microSv y(-1). Results indicate no significant radiological hazards arise from using such materials in building construction.

International Journal of Nanomanufacturing, 2009

ABSTRACT

With the Thomson scattering (TS) system in KSTAR, temporal evolution of electron temperature (T_e... more With the Thomson scattering (TS) system in KSTAR, temporal evolution of electron temperature (T_e) is estimated using a weighted look-up table method with fast sampling (1.25 or 2.5 GS/s) digitizers during the 2014 KSTAR campaign. Background noise level is used as a weighting parameter without considering the photon noise due to the absence of information on absolute photon counts detected by the TS system. Estimated electron temperature during a relatively quiescent discharge are scattered, i.e., 15% variation on T_e with respect to its mean value. We find that this 15% variation on T_e cannot be explained solely by the background noise level which leads us to include photon noise effects in our analysis. Using synthetic data, we have estimated the required photon noise level consistent with the observation and determined the dominant noise source in KSTAR TS system.

دراسة ميدانية لبعض التشوهات القوامية لدى تلاميذ المرحلة الأساسية الدنيا بمدارس الحصن الخاصة / الأ... more دراسة ميدانية لبعض التشوهات القوامية لدى تلاميذ المرحلة الأساسية الدنيا بمدارس الحصن الخاصة / الأردن = Field Study of Some Posture Deformity In The First Four Grades Of private Schools in AL-Huson، للحصول على النص الكامل يرجى زيارة مكتبة الحسين بن طلال في جامعة اليرموك او زيارة موقعها الالكتروني

Contemporary Educational Technology, 2021

In the current circumstances, the second wave of COVID-19 Pandemic is spreading and we seem to ha... more In the current circumstances, the second wave of COVID-19 Pandemic is spreading and we seem to have to live longer with most of the urgent measures taken in early 2020 to fight the spread out of the pandemic; of which is school closure. The present study aims at investigating students' satisfaction, attitudes and challenges in UAE public schools during the distance learning time of the third trimester of the academic year 2019-2020. The study also aims to measure differences of satisfaction level, attitudes, and challenges across gender and geographic places of residence within the UAE. Data collection started eight weeks after the commencement of the distance learning process and continued for two weeks. The first eight weeks that preceded data collection witnessed a continuous update of the, previously rich and well established, educational plans in line with continuous development plan for students and instructors that included intensive training for students and instructors on the use of up-to-date educational technologies. That has reflected on the results of the study, where the student satisfaction level, attitudes and challenges were found to lie within the "strong" category indicating high satisfaction level, positive attitude, and minimum faced challenges, with statistically significant differences in the mean across gender and residency for some cases. Such positive result is directly related to the fact that students of the UAE public schools were partially exposed to electronic learning even before the pandemic, the tremendous efforts of the ministry of education to guarantee smooth transfer to full distance learning after the outbreak of the pandemic, and the well established infrastructure of the country.

2015 IEEE International Conference on Plasma Sciences (ICOPS), 2015

Summary form only given. After our previous advancement for the Appleton-Hartree theory by extend... more Summary form only given. After our previous advancement for the Appleton-Hartree theory by extending the existing theory to include the plasma thermal effect, we present enhanced absorption rates for microwaves within the C-band from warm plasma. Thermal effects are important in electromagnetic wave propagation in the ionosphere as well as in the emerging applications of stealth technology.The derivation of the magneto-ionic dispersion equation in warm plasma immersed in a uniform magnetic field was presented in a previous work, where the obtained expressions extend the well known Appleton-Hartree, magneto-ionic formula of stationary cold plasma to the case of warm plasma. In the present work, we study the propagation constant and reflection coefficient for characterizing wave propagation in magnetized, warm plasma. To demonstrate this effect, we give a numerical example of the developed theory for the typical parameters that may exist in stealth technology applications. It is well known that in cold plasma one of the two forward propagating modes is weakly attenuated while the other is weakly amplified. In comparison, in warm plasma, we observed that the weak damping of one mode in the cold plasma is absolutely enhanced by the thermal effect, while the second (which is weakly amplified in cold plasma) follows an anomalous behavior around resonant frequencies with enhanced attenuation and enhanced amplification regions. The present work considers these effects in warm plasma and shows enhanced absorption of the microwaves, due to the thermal effect, from plasma near a metallic wall.

We report on a "Collaborative Workshop Physics" instructional strategy to deliver the f... more We report on a "Collaborative Workshop Physics" instructional strategy to deliver the first IE calculus-based physics course at Khalifa University, UAE. To these authors' knowledge, this is the first such course on the Arabian Peninsula using PER-based instruction. A brief history of general university and STEM teaching in the UAE is given. We present this secondary implementation (SI) as a case study of a novel context and use it to determine if PER-based instruction can be successfully implemented far from the cultural context of the primary developer and, if so, how might such SIs differ from SIs within the US. With these questions in view, a pre-reform baseline of MPEX, FCI, course exam and English language proficiency data are used to design a hybrid implementation of Cooperative Group Problem Solving. We find that for students with high English proficiency, normalized gain on FCI improves from <g> = 0.16+/-0.10 pre- to <g> = 0.47+/-0.08 post-reform, i...

Journal of Plasma Physics, Jun 22, 2006

ABSTRACT

Curie-Weiss Behaviour in The Compounds REBa2Cu3O7 ( RE = Rare Earth ) andBi1.7 Pb0.3Sr2Ca2Cu3O10،... more Curie-Weiss Behaviour in The Compounds REBa2Cu3O7 ( RE = Rare Earth ) andBi1.7 Pb0.3Sr2Ca2Cu3O10، للحصول على النص الكامل يرجى زيارة مكتبة الحسين بن طلال في جامعة اليرموك او زيارة موقعها الالكتروني

ABSTRACT form only given. Thermal effects may be of high degree of importance on electromagnetic ... more ABSTRACT form only given. Thermal effects may be of high degree of importance on electromagnetic wave propagation in the ionosphere as well as in the emerging applications of stealth technology. A further development for the Appleton-Hartree theory may be made by extending the existing theory to include the plasma thermal effects. In this work, we present the derivation of the magneto-ionic dispersion equation and the corresponding index of refraction, propagation constant and reflection coefficients for characterizing wave propagation in warm plasma immersed a uniform magnetic field that could be self generated or externally applied. The obtained expressions extend the well known Appleton-Hartree, magneto-ionic formula of stationary cold plasma to the case of warm plasma. To demonstrate the effects of plasma temperature on wave propagation and attenuation, a numerical example of the developed theory has been given for typical parameters that may exist in stealth technology applications. Electron temperature range from cold plasma limit up to vTh ~ 0.05c, where vTh represents the electron thermal energy and c the speed of light, and a collisional plasma frequency ranges within (10-3,10+3), corresponding to the vTh range (0,0.05c). It is well known that in cold plasma one the two forward propagating modes is weakly attenuated while the other weakly amplified. By comparing the propagation constant obtained for warm plasma with that for the cold plasma complex propagation constant of the classical AppletonHartree theory, we observed that the weak damping of one mode in the cold plasma is absolutely enhanced by the thermal effect, while the second (which is weakly amplified in cold plasma) follows an anomalous behavior around resonant frequencies with enhanced attenuation and enhanced amplification regions. Also, we apply the modified theory on calculating EM - wave absorption rates from plasma near a metallic wall and found that the thermal effect enhances the wave abs- rption.

IEEE Transactions on Plasma Science

A photosensitizer as potential anticancer drug of sodium zinc(II)-2,9,16,23phthalocyanine tetraca... more A photosensitizer as potential anticancer drug of sodium zinc(II)-2,9,16,23phthalocyanine tetracarboxylate (ZnPc(COONa)4) was investigated by means of steady-state spectroscopies in aqueous solution. The photosensitizer was found to be of far red-absorbing photosensitizer with a considerable singlet oxygen quantum yield (ΦΔ = 0.28). Upon illumination ZnPc(COONa)4 could be considered a stable with photobleaching constant of 1.8×10cmJ. Its photodynamic dose was found to be 1389 Jcm. The mechanism for the photodegradation of ZnPc(COONa)4 involves both singlet oxygen and radicals (mechanism of type II and type I).

Canadian Journal of Physics, 2013

The convective amplification of filamentation instability (FI) of electromagnetic waves traveling... more The convective amplification of filamentation instability (FI) of electromagnetic waves traveling along the density ramp of a magnetized plasma is investigated. The generalized amplification factor of the instability in the presence of a DC–magnetic field is derived by obtaining the governing equations of the instability and using the slow-coupling technique to obtain an analytical expression for the amplification factor in weakly magnetized plasma. The result shows enhancement of the convective FI gain by the magnetic field, where the enhancement is stronger for lower equilibrium plasma density values.