| 771 |
Research Title: One Year Real Data Rooftop PV System Performance Analysis of a University Academic Campus
Author: Firas Abdullah Obeidat, Published Year: 2021
International Journal on Energy Conversion (I.R.E.CON.), Vol. 9, N. 4
Faculty: Engineering and Technology
Abstract: This paper presents the details of 13 rooftop PV systems installed at Philadelphia University (PU) in Amman-Jordan and gives an assessment of these PV systems in terms of the , and also in terms of energy generated compared with the university energy consumption using real data of the year 2019. Technoeconomic performance metrics and socio environmental assessment of the PV systems are also performed. The analysis shows that more than 99% of the energy needs of the university are met by solar energy. This energy generated is equivalent to 1587 metric tons of CO2 eq. This amount of CO2 avoided is equivalent to 26,236 tree seedings grown for 10 years. This emphasizes the main conclusion that Philadelphia University has taken the right decision with the installation of these systems that represent a great step towards the university sustainability
Keywords: Academic Campus Sustainability, PV Systems Assessment, PV Systems Performance Metrics, Socio-Environmental Impact
|
| 772 |
Research Title: Future Energy Mix Mapping for Jordan using Multi Criteria Decision Analysis
Author: Firas Abdullah Obeidat, Published Year: 2021
12th International Renewable Engineering Conference – IREC2021, jordan
Faculty: Engineering and Technology
Abstract: Jordan is one of the most hydrocarbon-poor
countries in the Middle East, with neither significant production
of oil nor natural gas. It relies heavily on imported oil and gas
for power generation. This let energy remains Jordan’s top
challenge. In its future energy strategy, Jordan pledged to
diversify its energy supply by increasing domestic sources
contribution to the total energy mix. The available alternatives
vary from conventional energy sources including natural gas
power plants, nuclear power, and oil shale to renewable energy
comprising PV power plants, wind energy, and concentrated
solar power plants. This makes it a very challenging task for the
decision makers to choose in which track to invest more heavily
than others. This paper uses Multi Criteria Decision Analysis
(MCDA) to accomplish this goal. MCDA are techniques used to
compare a number of alternatives using monetized, quantitative
or qualitative criteria. Six options were compared; new CCGT
plants, nuclear power plants, oil shale direct combustion, wind
turbines, PV technology, and Concentrating Solar Power (CSP).
The value tree of the objectives was constructed with five high
level factors that each option is evaluated against that include
the aspects of environmental, economic, political, social, and
technical. These factors are then broken down into 15
performance criteria. Criteria used for the evaluation were CO2
emissions, external costs, visual impact, noise, capital cost,
operation and maintenance costs, fuel costs, cost of generated
electricity, water requirements, promotion of renewables, jobs
creation, capacity factor, predictability, and hybridization.
Results show that renewable energy technologies outperform
conventional ones in terms of the overall weighted score. In the
renewables; PV technology come first with overall weighted
score of 84.89 out of 100. CSP energy come second with this
score of 64.61 while wind energy scored 61.14. The overall
weighted score for the conventional technologies of natural gas,
nuclear, and oil shale power plants were 31.57, 324.17 and 26.94
respectively. Conclusions withdrawn from this research work
are that power supply systems based on renewable technologies,
will play a greater role in generating electricity in Jordan and
are the most preferred options to invest more heavily in to
diversify the future energy mix and that MCDA is a great tool
serving decision makers in their energy sector policies that can
handle complex decision-making problems.
Keywords: energy mix, multi criteria, decision making
|
| 773 |
Research Title: Optimization of Kumada-Corriu-Tamao cross-coupling reactions of tri- and tetra- bromothiophenes and symmetrical di-bromo-2, 2' bithiophene with cyclohexylmagnesium bromide: Synthesis, DFT studies and nonlinear optical analysis
Author: Adnan Dahadha, Published Year: 2022
Faculty: Science
Abstract: Tri-, tetra-bromothiophene and symmetrical dibromo-2,2'-bithiophene derivatives were coupled efficiently
with cyclohexylmagnesium bromide in the presence of iron, nickel and palladium as catalysts under optimized mild
reaction conditions. Additives such as lithium chloride and bromide were employed to enhance the efficiency of the
Grignard reagent. The corresponding coupled products, which were widely used as precursors or additives in photonic
industries were studied by DFT method at B3LYP/6-311++G(d,p) level of theory using Gaussian 09W to explore the
global chemical reactivity descriptors and nonlinear optical activities ( NLO). According to the results of NLO
analysis, polarizability (α), anisotropy hyperpolarizability (Δα) and first order hyperpolarizability (β) exhibited higher
value than the standard urea, which reflect a promising molecular non-linear susceptibility, indicating that the
compounds 4a-4f are good candidates in the potential photonic applications.
Keywords: Iron; nickel; palladium; thiophene; nonlinear optical analysis
|
| 774 |
Research Title: Polyethylene Glycols Catalyzed Reaction of Catechol and Resorcinol with Cerium Ammonium Sulfate in the Aqueous Medium: Kinetic and Mechanistic Study
Author: Adnan Dahadha, Published Year: 2022
Chemistry Africa,
Faculty: Science
Abstract: The reaction kinetics of catechol or resorcinol with cerium (Ce) ammonium sulfate were spectrophotometrically investigated in polymer media containing polyethylene glycol (PEG 200, 600, 1500, and 4000). Kinetic runs for Ce(IV) were performed under pseudo-first-order reaction conditions. The reaction was found to be first-order for Ce(IV) and fractional orders for catechol, resorcinol, and H+. The presence of PEG caused considerable acceleration of the oxidation of the two substrates. Of note, PEG 4000 presents a distinguished catalytic activity when compared with PEG 200, 600, and 1500 in an acidic medium. The kinetic results were modeled using the Benesi–Hildebrand and Menger–Portnoy equations to explain the nature of the catalytic effects of both PEG forms and substrates. Hence, the efficiency of the reaction was optimal in the presence of resorcinol as a substrate. Based on kinetic features and thermodynamic parameters, probable mechanisms and expected final products are suggested and discussed.
Keywords: Catechol · Resorcinol · Cerium(IV) · Polyethylene glycols · Spectrophotometry
|
| 775 |
Research Title: The Catalytic Influence of Polymers and Surfactants on the Rate Constants of Reaction of Maltose with Cerium(IV) in Acidic Aqueous Medium.
Author: Adnan Dahadha, Published Year: 2022
Journal of Chemistry, 2022
Faculty: Science
Abstract: Kinetics of the reaction of maltose with cerium ammonium sulfate were analyzed spectrophotometrically by observing the decrease of the absorbance of Cerium(IV) at 385 nm in the presence and absence of polyethylene glycols (600, 1500, and 4000) and Polyvinylpyrrolidone (PVP), in addition to anionic micelles of sodium dodecyl sulfate (SDS), cationic micelles of cetyltrimethylammonium bromide (CTAB) and nonionic micelles of Tween 20 surfactants. Generally, there are few literatures about using the polymers (PEGs and PVP) as catalysts in the oxidation-reduction reactions, therefore the major target of this work was to investigate the influence of the nature of polymers and surfactants on the oxidation rates of maltose by Cerium(IV) in acidic aqueous media, as well as employing the Piszkiewicz model to explain the catalytic effect. The kinetic runs were derived by adaptation of the pseudo first-order reaction conditions with respect to the Cerium(IV). The reaction was found to be first-order with respect to the oxidant and fractional-order to maltose and H2SO4. The reaction rates were enhanced in the presence of polymer and micellar catalysis. Indeed, the surfactants were found to work perfectly close to their critical micelle concentrations (CMC). The electrostatic interaction and H-bonding appear to play an influential role in binding maltose molecules to polymer/ surfactant micelles, while oxidant ions remain at the periphery of the Stern layer within the micelle.
Keywords: Polymer catalysis, Micellar Catalysis, Surfactants, Cerium(IV), Maltose, Oxidation reactions
|
| 776 |
Research Title: An Acoustic Account of Prosodic Competence through Shadowing
Author: Abdu Al-Kadi, Published Year: 2022
Journal of English Studies in Arabia Felix, 1
Faculty: Arts
Abstract: Adopting an acoustic framework, this experimental study elucidates the effect of the shadowing technique on the prosodic competence of learners of English whose L1 (Arabic) and English have quite dissimilar phonological systems. It appertains to prosodic aspects such as pauses, stress, and sound length that cause challenges to non-English native speakers. Two individuals of heterogeneous linguistic background participated in a pre-test and a post-test before and after five weeks of shadowing sessions. The data was analyzed acoustically using Praat Software. Findings showed that the participant with the elementary level outperformed the other participant whose level was intermediate, partially because the former was highly motivated to improve her English. The study concluded that shadowing per se is in no way a panacea for improving supra-segmental features unless it is coupled with a motivation to do so, regardless of the level of proficiency.
Keywords: Pauses, Pronunciation, Prosody, Shadowing, Supra-segmental Features
|
| 777 |
Research Title: Towards Green Driving: Efficient Driving Techniques
Author: Maram Bani Younes, Published Year: 2022
World Electric Vehicle Journal, 13
Faculty: Information Technology
Abstract: The exponential increase in the number of daily traveling vehicles has exaggerated the global warming and environmental pollution issues. These problems directly threaten the continuity and the quality of life on the planet. Several techniques and technologies have been used and developed to reduce the fuel consumption and gas emissions of traveling vehicles over the road network. In this paper, we investigate some solutions that assist drivers to follow efficient driving tips during their trips. Advanced technologies of communications or vehicle manufacturing have considered enhancing the traffic efficiency over road networks. Besides, several advisory systems have been proposed to recommend drivers with the most efficient speed, route, or other decisions to follow towards their targeted destinations. These recommendations are selected according to the real-time traffic distribution and the context of the road network. In this paper, first different highly fuel consumption reasons and scenarios are investigated over the road networks. Then, the details of efficient driving techniques that were proposed to tackle each case accordingly are reviewed and categorized over downtown and highways. Finally, set of remarks and existed gaps are reported to researchers in this field.
Keywords: Green driving; Road context; Driving Assistance; Traffic situation.
|
| 778 |
Research Title: Towards Green Driving: Efficient Driving Techniques
Author: Maram Bani Younes, Published Year: 2022
World Electric Vehicle Journal, 13
Faculty: Information Technology
Abstract: The exponential increase in the number of daily traveling vehicles has exaggerated the global warming and environmental pollution issues. These problems directly threaten the continuity and the quality of life on the planet. Several techniques and technologies have been used and developed to reduce the fuel consumption and gas emissions of traveling vehicles over the road network. In this paper, we investigate some solutions that assist drivers to follow efficient driving tips during their trips. Advanced technologies of communications or vehicle manufacturing have considered enhancing the traffic efficiency over road networks. Besides, several advisory systems have been proposed to recommend drivers with the most efficient speed, route, or other decisions to follow towards their targeted destinations. These recommendations are selected according to the real-time traffic distribution and the context of the road network. In this paper, first different highly fuel consumption reasons and scenarios are investigated over the road networks. Then, the details of efficient driving techniques that were proposed to tackle each case accordingly are reviewed and categorized over downtown and highways. Finally, set of remarks and existed gaps are reported to researchers in this field.
Keywords: Green driving; Road context; Driving Assistance; Traffic situation.
|
| 779 |
Research Title: Pharmacists-physicians collaborative intervention to reduce vaccine hesitancy and resistance: A randomized controlled trial.
Author: Asma Ahmad El-Shara, Published Year: 2022
Vaccine X, 100135
Faculty: Pharmacy
Abstract: Abstract
Purpose: Given their negative influence on community health, vaccine hesitancy and resistance are emerging challenges that require healthcare intervention. Therefore, this study aimed to assess the impact of physician-pharmacist collaborative health coaching on rates of hesitancy and resistance for a COVID-19 vaccine.
Methods: After an initial assessment of rates of hesitancy and resistance for a COVID-19 vaccine was conducted, hesitant and resistant participants were approached, recruited, and randomized into an active and control group. Pharmacists-physicians collaborative coaching intervention was delivered to active group subjects over two months through Facebook live sessions. The outcome measures were assessed in both groups before coaching, directly after coaching, and a month after coaching.
Results: The proportions of hesitancy and resistance for a COVID-19 vaccine among subjects in the active group were significantly reduced from 64.3% and 35.7?fore coaching to 20.1% and 7.8% directly after coaching, respectively. These proportions were further reduced to 11.1% and 3.3% a month after coaching, respectively. Furthermore, the mean scores for knowledge on, and attitude towards COVID-19 vaccine were significantly increased from 4.6 ± 1.8 and 4.1 ± 1.7 before coaching to 7.5 ± 3.1 and 8.9 ± 3.8 directly after coaching, respectively. However, the change in mean score of beliefs about COVID-19 vaccines among active group subjects was not significant.
Conclusion: High rates of hesitancy and resistance for a COVID-19 vaccine were found in Jordan. These rates can be significantly reduced through online pharmacists-physicians collaborative coaching, which can also improve knowledge of and attitude towards COVID-19 vaccines.
Keywords: COVID-19; COVID-19, coronavirus disease 2019; Health coaching; SARS-Cov-2, Severe acute respiratory syndrome coronavirus 2; Vaccine hesitancy; χ2, chi-square.
|
| 780 |
Research Title: Assessment of A new Strategy to Prevent Prescribing Errors Involving COVID-19 Patients in Community Pharmacies
Author: Asma Ahmad El-Shara, Published Year: 2022
Hospital Pharmacy, April
Faculty: Pharmacy
Abstract: Background: Because COVID-19 patients are vulnerable to prescribing errors (PEs) and adverse drug events, designing and implementing a new approach to prevent prescribing errors (PEs) involving COVID-19 patients has become a priority in pharmacotherapy research. Objectives: To investigate whether using WhatsApp to deliver prescribing error (PE)-related clinical scenarios to community pharmacists could enhance their ability to detect PEs and conduct successful pharmaceutical interventions (PIs). Methods: In this study, 110 community pharmacies were recruited from different regions across Jordan and equally allocated to 2 groups. Over the course of 4 weeks, WhatsApp was used to send PEs-related clinical case scenarios to the active group. The second group was controlled with no clinical scenarios. After completion of the 4-week phase, pharmacists from both groups were asked to document PEs in COVID-19 patients and their interventions using a data-collection form. Results: The incidence of PEs in COVID-19 patients documented in the active group (18.54%) was higher than that reported in the control group (3.09%) (P = .001). Of the 6598 and 968 PIs conducted by participants working in the active and control group pharmacies, 6013 (91.13%) and 651 (67.25%) were accepted, respectively. The proportions of wrong drug (contraindication), wrong drug (unnecessary drug prescribed/no proof of its benefits), and omission of a drug between the active and control groups were 15.30% versus 7.21% (P = .001), 11.85% versus 6.29% (P = .03), and 17.78% versus 10.50% (0.01), respectively. Additionally, the proportions of lethal, serious, and significant errors were 0.74% versus 0.35% (P = .04), 10.52% versus 2.57% (0.002), and 47.88% versus 9.57% (0.001), respectively. Addition of drug therapy interventions (AOR = 0.62; 95% CI, 0.21-0.84) and errors with significant clinical seriousness (AOR = 0.32; 95% CI, 0.16-0.64). Conclusions PEs involving COVID-19 patients in community settings are common and clinically significant. The intervention assessed in this study could be promising for designing a feasible and time-efficient interventional tool to encourage pharmacists’ involvement in identifying and correcting PEs in light of COVID-19.
Keywords: COVID-19 patients, prescribing errors, clinical scenarios
|