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Salah Turki ALRAWASHDEH(Salah Turki ALRAWASHDEH ),Ahmad Mahmoud ABKAL(Ahmad Mahmoud ABKAL ),Ali Abdelh Fattah ZYADAT(Ali Abdelh Fattah ZYADAT ) 한국유통과학회 2023 The Journal of Asian Finance, Economics and Busine Vol.10 No.1
The study aimed to study the effect of the inflation rate, the real domestic product, the interbank lending interest rate, and the total deposits on credit facilities in Jordan for 2012−2021 through quarterly data. The study adopted the ARDL model. The study used the time series analysis method, as the study tests the stationarity of the time series. The results showed that the impact of inflation on the total credit facilities was negative. In contrast, the impact of each of the total deposits, real GDP, and the interest rate of interbank loans on the total credit facilities was positive and significant. The study recommended the need for the banking sector in Jordan to develop risk management mechanisms in a way that allows it to adapt to economic cycles and crises by conducting stress tests and developing scenarios that ensure the formation of sufficient provisions to meet emergencies. The study also recommended that the macroeconomic policy should be based on creating a stable macroeconomic environment that allows the efficient employment of resources in all economic sectors in a way that achieves high economic growth rates, which contributes to the promotion of economic recovery and is reflected in income. Hence, individuals have a greater ability to repay loans.
Development of low concentrated solar photovoltaic system with lead acid battery as storage device
Salah Ud-Din Khan,Zeyad Ammar Almutairi,Omer Salah Al-Zaid,Shahab Ud-Din Khan 한국물리학회 2020 Current Applied Physics Vol.20 No.4
Energy storage system powered by renewable energies is a viable option to meet energy requirement without addition of carbon footprints to the environment. This study involves development of theoretical and computational models for a solar photovoltaic (PV) system coupled with a lead acid battery. The study commenced with selection of most appropriate lead acid battery and PV system for installation in a representative location in Riyadh, Kingdom of Saudi Arabia. Various technical and economic parameters were assessed and calculated by computational approach. The optimized lead acid battery was integrated with low concentration solar PV panels (CPV) followed by a feasibility study. Theoretical model was developed for the integrated system to calculate various parameters of the CPV and lead acid battery. Technical and economic assessment of this coupled unit was calculated using a theoretical approach. The developed model was then subjected to computational approach for verification and validation analysis of the integrated system. The detailed assessment of batteries and integrated system show the applicability of this system in Riyadh region. The research will be extended to develop energy storage systems for remote areas using lead acid batteries.
Effect of fibers and welded-wire reinforcements on the diaphragm behavior of composite deck slabs
Salah Altoubat,Hisseine Ousmane,Samer Barakat 국제구조공학회 2015 Steel and Composite Structures, An International J Vol.19 No.1
Twelve large-scale composite deck slabs were instrumented and tested in a cantilever diaphragm configuration to assess the effect of fibers and welded wire mesh (WWM) on the in-plane shear capacity of composite deck slabs. The slabs were constructed with reentrant decking profile and reinforced with different types and dosages of secondary reinforcements: Conventional welded wire mesh (A142 and A98); synthetic macro-fibers (dosages of 3 kg/m<sup>3</sup> and 5.3 kg/m<sup>3</sup>); and hooked-end steel fibers with a dosage of 15 kg/m<sup>3</sup>. The deck orientation relative to the main beam (strong and weak) was also considered in this study. Fibers and WWM were found efficient in distributing the applied load to the whole matrix, inducing multiple cracking, thereby enhancing the strength and ductility of composite deck slabs. The test results indicate that fibers increased the slab’s ultimate in-plane shear capacity by up to 29% and 50% in the strong and weak directions, respectively. WWM increased the ultimate in-plane shear capacity by up to 19% in the strong direction and 9% in the weak direction. The results suggest that discrete fibers can provide comparable diaphragm behavior as that with the conventional WWM.
Salah M. Tawfik,Mirkomil Sharipov,Buithehuy,Zayakhuu Gerelkhuu,Dana Biechele-Speziale,이용일 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.57 No.-
Naturally modified nonionic alginate-based polymers were synthesized to act as functionalizing agentsfor upconversion nanoparticles (UCNPs). The synthesized polymer-UCNPs hybrid nanoparticles showhigh stability, excellent biocompatibility and enhanced luminescence intensity for NIR imaging. Additionally, our results show that due to the large cavities of the materials and amphiphilic polymershell, these nonionic alginate-functionalized UCNPs were able to load the anticancer drug doxorubicin(DOX) with the exceptional efficiency as well as release it in a highly controlled and selectivepH-responsive manner via folate receptor-mediated endocytosis. Targeting using this multifunctionpolymer significantly improved the capability of DOX-loaded UCNPs to inhibit the growth of KB cancercells than free DOX. These biocompatible nonionic alginate-functionalized UCNPs hold substantialpotential as effective anticancer drug-delivery carriers and NIR imaging agents.
Energy release rate for kinking crack using mixed finite element
Salah, Bouziane,Hamoudi, Bouzerd,Noureddine, Boulares,Mohamed, Guenfoud Techno-Press 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.50 No.5
A numerical method, using a special mixed finite element associated with the virtual crack extension technique, has been developed to evaluate the energy release rate for kinking cracks. The element is two dimensional 7-node mixed finite element with 5 displacement nodes and 2 stress nodes. The mixed finite element ensures the continuity of stress and displacement vectors on the coherent part and the free edge effect. This element has been formulated starting from a parent element in a natural plane with the aim to model different types of cracks with various orientations. Example problems with kinking cracks in a homogeneous material and bimaterial are presented to assess the computational accuracies.
Performance and combustion characteristics of a novel crank-rocker engine
Salah E. Mohammed,M. B. Baharom,A. Rashid A. Aziz 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.7
The performance and combustion characteristics of a novel internal combustion engine, called the crank-rocker, have been investigated experimentally. The engine specifications are gasoline-port injection, four-stroke, spark-ignition, and single-curved cylinder. The ignition timing was initially set at 8.6 0 CA BTDC, 1800 rpm based on a small conventional engine. The equivalence ratio, lambda (λ) was varied at rich, stoichiometric, and lean conditions. The entire tests were performed at six different engine speeds of 1800, 2000, 2200, 2400, 2600 and 2800 rpm, with each one operating at wide open throttle. The performance data such as indicated torque, indicated power, indicated specific fuel consumption, and indicated thermal efficiency were calculated. The combustion characteristics such as cylinder pressure, mass fraction burned, heat release rate, P-V diagram, and indicated mean effective pressure were also determined. The results obtained from the crank-rocker engine were compared with the experimental results obtained from the conventional engine (benchmark engine). The results showed that the indicated torque, power and thermal efficiency of crank-rocker engine is higher than normal slidercrank engine. The indicated torque and power increased by about 6.28 %, while the indicated specific fuel consumption is lower by 4.69 %. In general, the engine has similar indicated performance characteristics to the conventional engine, but the combustion characteristics differ because the peak values of the combustion pressure and heat release occur at higher crank angle ATDC. This was found to be due to the dwelling of piston at TDC. The combustion rate and mixture of the novel crank-rocker engine burned faster, resulting in shorter combustion duration and ignition delay period than the conventional slider-crank engine.
Problems Related to Construction and Building Materials in Libya
Salah, Abuzaid,Bloomer, Steve Korea Institute of Construction Engineering and Ma 2014 Journal of construction engineering and project ma Vol.4 No.4
The broad aim of this paper is to provide a detailed understanding of the post-war problems associated with materials for reconstruction in Libya, and to identify key problems and obstructions. Theoretical and empirical studies are being conducted in Libya. The theoretical study focuses on materials for construction and the key issues such as sources, transport and storage of materials, as well as their impact on the national economy, the nation's socio-economic development and the environment. This empirical study employed questionnaires, observations and a series of interviews with researchers, academics, suppliers and manufacturers, supported by the researcher's three decades of experience of working in the construction industry and its associated processes and operations. The empirical study illustrated that materials for post-disaster reconstruction in Libya suffer from external problems related to policies and decision-making in terms of availability of materials, fluctuation of prices of materials, specifications, building codes, legislation and regulations, and internal problems related to the construction and building material's key players: construction companies, consultancy firms, manufacturers and suppliers.