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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.
STABILITY RESULTS OF POSITIVE WEAK SOLUTION FOR SINGULAR p-LAPLACIAN NONLINEAR SYSTEM
Salah Khafagy,Hassan Serag 한국전산응용수학회 2018 Journal of applied mathematics & informatics Vol.36 No.3
In this paper, we investigate the stability of positive weak solution for the singular $p$-Laplacian\textbf{\ }nonlinear system $\ -div[|x|^{-ap}|\nabla u|^{p-2}\nabla u]+m(x)|u|^{p-2}u=\lambda |x|^{-(a+1)p+c}b(x)f(u)$ \ in$\,\ \Omega ,$ $\ Bu=0$ \ on $\ \partial \Omega ,$ where $\Omega \subset R^{n}$ is a bounded domain with smooth boundary $% Bu=\delta h(x)u+(1-\delta )\frac{\partial u}{\partial n}$ where $\delta \in \lbrack 0,1],$ $h:\partial \Omega \rightarrow R^{+}$ with $h=1$ when $\delta =1,$ $0\in \Omega ,$ $1<p<n,$ $0\leq a<\frac{n-p}{p}$, $m(x)$ is a weight function, the continuous function $b(x):\Omega \rightarrow R$ satisfies either $b(x)>0$ or $b(x)<0$ for all $x\in \Omega $, $\lambda $ is a positive parameter and $f:[0,\infty )\rightarrow R$ is a continuous function. We provide a simple proof to establish that every positive solution is unstable under certain conditions.
Salah Mahdi Khaleel,Bernard Rolfe,Riyadh Al-Ameri,Tim Hiliditch 한국자동차공학회 2019 International journal of automotive technology Vol.20 No.2
The urging need to reduce the harmful emissions required a thorough investigations into the methods of utilizing the dissimilar lightweight materials in modern automobile, aviation and marine industries. With the exception use of dissimilar materials, traditional joining methods become limited or incapable to maintain safety standards. The adhesive bonding, therefore, seems an ideal choice to overcome this limitation due to uniform stress distribution, fatigue resistance and sound isolation. However, the role of environmental degradation become vital in the areas where the joints exposed directly or indirectly to the sunlight, humidity and extreme change in the temperature. With such key industries, intensive work to comply with safety standards are crucial. The current work devoted to examining the influence of Ultra-Violet (UV) exposure on three different Carbon Fiber Reinforced Polymer (CFRP) setup of Aluminum-CFRP single lap joint with respect to strength and fracture mode. The samples exposed to the specified UV dosage of three exposure duration then tested mechanically based on ASTM standards. The outcomes indicate that the fracture modes are highly affected by the CFRP orientation as well as the UV exposure time. Moreover, the joint strength decreases with increases of the UV exposure time.
Electronic structure of p-type transparent conducting oxide CuAlO2
Salah Mohamed,Yoon Joonseok,El-Desoky Mohamed M.,Hussain Zahid,Ju Honglyoul,Mo Sung-Kwan 한국물리학회 2022 Current Applied Physics Vol.39 No.-
Copper-based delafossite oxides are excellent candidates for the p-type transparent conducting oxide (TCO), which is essential in realizing transparent semiconductor applications. Using angle-resolved photoemission spectroscopy (ARPES), we report the low-energy electronic structure of CuAlO2. We found that the band structure near the valence band top is characterized by hole bands with their maxima along the Brillouin zone boundary. Furthermore, the effective masses along the Γ–M and Γ–K directions were found to be (0.6 ± 0.1) m0 and (0.9 ± 0.1) m0, respectively, which impose an important benchmark against the existing band calculations.
Salah, Muhja,Tayebi, Lobat,Moharamzadeh, Keyvan,Naini, Farhad B. Korean Association of Maxillofacial Plastic and Re 2020 Maxillofacial Plastic Reconstructive Surgery Vol.42 No.-
Background: Bone grafting has been considered the gold standard for hard tissue reconstructive surgery and is widely used for large mandibular defect reconstruction. However, the midface encompasses delicate structures that are surrounded by a complex bone architecture, which makes bone grafting using traditional methods very challenging. Three-dimensional (3D) bioprinting is a developing technology that is derived from the evolution of additive manufacturing. It enables precise development of a scaffold from different available biomaterials that mimic the shape, size, and dimension of a defect without relying only on the surgeon's skills and capabilities, and subsequently, may enhance surgical outcomes and, in turn, patient satisfaction and quality of life. Review: This review summarizes different biomaterial classes that can be used in 3D bioprinters as bioinks to fabricate bone scaffolds, including polymers, bioceramics, and composites. It also describes the advantages and limitations of the three currently used 3D bioprinting technologies: inkjet bioprinting, micro-extrusion, and laserassisted bioprinting. Conclusions: Although 3D bioprinting technology is still in its infancy and requires further development and optimization both in biomaterials and techniques, it offers great promise and potential for facial reconstruction with improved outcome.
Salah, M.S.,El-Nouty, F.D.,Al-Hajri, M.R. Asian Australasian Association of Animal Productio 1992 Animal Bioscience Vol.5 No.3
Eight healthy Holstein bulls, 4-6 years old were used to study the effect of season of the year on the incidence of the morphologically abnormal spermatozoa. Semen was collected twice a week by A. V. over one-year period. The percentage of total abnormal spermatozoa was $14.1{\pm}0.5$. Ejaculates collected during hot summer season had significantly higher incidence of abnormal spermatozoa than those collected during winter time. Warm spring had moderate semen abnormality. In addition to its effect on the total number of morphologically abnormal spermatozoa, season affected significantly the primary as well as the secondary types of abnormalities. The differences between incidence of primary and secondary types of abnormalities were not significant for all seasons and seasons pooled together. The ratio between the total forms of abnormality in the head, mid-piece and tail of spermatozoa was as 1:1.5:1. Head and mid-piece had defected more during summer compared with both winter and spring. There was no variation in tail abnormalities due to season. The significant effect of season on head was observed by large, pyriform, free and detached heads, while that on mid-piece was by swollen, coiled mid-pieces and protoplasmic droplets.
Salah Chyad Kadhim,Hussein Falah Hasan,Hudaa Nadhim Khalbas 대한산업공학회 2020 Industrial Engineeering & Management Systems Vol.19 No.4
The main purpose of this research is to analyze the effect of business diversity on the relation between profit sustainability, real earnings management and commercial credit in companies of Securities and Exchange Organization of Iraq. In this research, dependent variable is business credit which is calculated through dividing trade payable accounts of the company on the total asset (Petersen and Rajan, 1997; Giannetti et al., 2011) the independent variables are profit sustainability and real earnings management; in order to calculate profit sustainability the Kormendi and Lipemodel has been utilized while for calculating real earnings management the model that already has been used. The research data has been gathered by using a sample made up of 35 companies during 2011-2016. The research hypotheses were analyzed by hybrid data in SATA14 application. The results indicate that the modular effect of business diversity on the relation of profit sustainability and business credit is positive and meaningful, and the modular effect of business credit on the relation between real profit management and business credit is not meaningful.