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How Banks' Resources at the Retail Level Affect Their Output?
ALOTHMAN, Seham,AL-MAHISH, Mohammed Korea Distribution Science Association 2020 The Journal of Asian Finance, Economics and Busine Vol.7 No.12
The study aims to measure the productivity of the Saudi banking sector at the retail level using secondary data for 11 local banks from the period 2015-2019. The study uses an extended version of the Cobb-Douglas production function to account for the fact that as banks openup more retail branches, they will need to employ more labor. The extended Cobb-Douglas production function was estimated using the two-way fixed effect model to account for unobserved heterogeneity across Saudi banks resulting from differences in labor competencies and leadership style. Besides, the model accounts for unobserved heterogeneity among Saudi banks due to the advancement in electronic services over time. The results showed that labor, branches, customers' deposits, and fixed deposits have a positive effect on the total value of generated loans. Conversely, ATM has an insignificant effect on generated loans. The average scale elasticity shows that the Saudi banks at the retail level are operating under decreasing returns to scale. The average marginal rate of technical substitution shows that Saudi banks need at least one ATM to replace one unit of labor at the retail level while keeping the same level of output.
Zeid A. AlOthman,Mohammad Mezbaul Alam,Mu. Naushad 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.3
Nernst–Planck equation was applied to study the heavy metal ion exchange kinetics over the surface of nylon 6,6 Zr(IV) phosphate at various temperatures under particle diffusion controlled phenomena. Various useful ion exchange kinetic parameters such as self-diffusion coefficient (Do), energy of activation (Ea), and entropy of activation (DS*) were evaluated to validate the ion exchange process for practical applicability of this composite cation exchanger in remediation processes of the environment. This study is also supported for the good selectivity of Cu(II) to validate the practical application of this cation exchanger in environmental analysis.
Choi, Goeun,Piao, Huiyan,Alothman, Zeid A,Vinu, Ajayan,Yun, Chae-Ok,Choy, Jin-Ho DOVE MEDICAL PRESS 2016 INTERNATIONAL JOURNAL OF NANOMEDICINE Vol.11 No.-
<P>Methotrexate (MTX), an anticancer agent, was successfully intercalated into the anionic clay, layered double hydroxides to form a new nanohybrid drug. The coprecipitation and subsequent hydrothermal method were used to prepare chemically, structurally, and morphologically well-defined two-dimensional drug-clay nanohybrid. The resulting two-dimensional drug-clay nanohybrid showed excellent colloidal stability not only in deionized water but also in an electrolyte solution of Dulbecco’s Modified Eagle’s Medium with 10% fetal bovine serum, in which the average particle size in colloid and the polydispersity index were determined to be around 100 and 0.250 nm, respectively. The targeting property of the nanohybrid drug was confirmed by evaluating the tumor-to-blood and tumor-to-liver ratios of the MTX with anionic clay carrier, and these ratios were compared to those of free MTX in the C33A orthotopic cervical cancer model. The biodistribution studies indicated that the mice treated with the former showed 3.5-fold higher tumor-to-liver ratio and fivefold higher tumor-to-blood ratio of MTX than those treated with the latter at 30 minutes postinjection.</P>
Mu. Naushad,Z.A. ALOthman,M.R. Khan,N.J. ALQahtani,I.H. ALSohaimi 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6
In the present paper, Amberlyst-15 resin was used for the removal of malathion. Various experimentalparameters such as effect of pH, contact time, resin dose, initial malathion concentration andtemperature were studied to find the optimum conditions for malathion removal. The removal rate ofmalathion by Amberlyst-15 was rapid and equilibrium was established within 30 min. Kinetic studiesshowed better applicability for pseudo-second-order model and equilibrium data was best fitted toFreundlich isotherm model. The thermodynamic parameters showed that the adsorption of malathionwas feasible, endothermic and spontaneous. The concentration of malathion was determined usingultra-performance liquid chromatography–tandem mass spectrometry.
M. Naushad,Z.A. ALOthman,Inamuddin,H. Javadian 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.25 No.-
EDTA-Zr(IV) iodate was prepared via the incorporation of aqueous solution of EDTA into the inorganic precipitate of Zr(IV) iodate. Distribution coefficient values for different metals showed that EDTA-Zr(IV) iodate had the highest adsorption capacity for Pb(II). The practical applicability of EDTA-Zr(IV) iodate was explored by separating Pb(II) metal from a synthetic mixture of metal ions. Dependence of adsorption on contact time, pH of the solution, exchanger dose and temperature was studied to achieve the optimum conditions. Kinetic studies showed better applicability for pseudo-second-order model. Thermodynamic parameters viz. – entropy change, enthalpy change and Gibb’s free energy change were also calculated.
Monitoring of acrylamide carcinogen in selected heat-treated foods from Saudi Arabia
Mohammad Rizwan Khan,Zeid Abdullah ALOthman,Mu. Naushad,Ahmed Khodran Alomary,Sulaiman Mohammed Alfadul 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.4
The present study reports the outcomes of assessment on acrylamide levels in selected heat-treated foods of diverse brands and origins from Saudi Arabia. In chips, acrylamide level was detected from 28 to 954 lg/kg, sample 7 (salted) contained higher amount (954 lg/kg) whereas, sample 8 (labneh and mint) comparatively produced lower amount (28 lg/kg). Nuts and dried fruits have generated acrylamide from 2 to 93 lg/kg, salted peanut of Indian origin produced higher amount (93 lg/kg) while apricot (plain) relatively generated lower amount (2 lg/ kg). The levels of acrylamide in biscuits, pastry, cacao, chocolate, olive, cheese, corn, oat and wheat flakes, and bread were found from 26 to 234 lg/kg. Biscuits generated high concentration (234 lg/kg) while corn flakes fairly generated lower amount (26 lg/kg). The obtained results have shown a great variation of acrylamide content and reason might be due to foods type, cooking ingredients and, cooking methods, time and temperature.
Mohammad Mezbaul Alam,Zeid A. AlOthman,Mu. Naushad 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.6
Two organic–inorganic type composite materials were prepared via the incorporation of organic conducting polymers into the inorganic precipitates of multivalent metal acid salts to explore their analytical and environmental applications. Vital uses of these materials for the analyses of water pollution were demonstrated by the quantitative separation of Cd2+ and Hg2+ from some synthetic and real samples onto their columns. Separation and determination of Zn2+ and Fe2+ in the pharmaceutical preparations were also performed. The adsorption behavior of dichlorvos (insecticide) on the surface of polyaniline Sn(IV) tungstoarsenate was studied which indicating its usefulness in the decrease of environmental pollution load.
Mu. Naushad,Moonis Ali Khan,Zeid Abdullah ALOthman,Mohammad Rizwan Khan 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
The adsorptive potential of De-Acidite FF-IP resin for the removal of nitrate (NO3) from synthetic as well as commercially available bottled water samples was testified. Ultra-performance liquid chromatogra-phy–mass spectrometry (UPLC–MS) was utilized for detection and determination of NO3 . Optimum NO3 adsorption was observed at pH range 2 to 6. Kinetic studies revealed the applicability of pseudofirst-order kinetic model for analyzed concentration range (100–300 mg/L) while, the equilibration time (25 min) was independent of initial NO3- concentration. The breakthrough capacities in Milli-Q and tap water were 35 and 30 mg/g, respectively.
Saikh M. Wabaidur,Zeid A. AlOthman,Masoom R. Siddiqui,Kazi Mohsin,Leda G. Bousiakou,George A. Karikas 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.24 No.-
Ultra performance liquid chromatography–mass spectrometry (UPLC–MS) method has been developed for the simultaneous determination of pharmaceuticals in industrial waste water samples. The binary mobile phase was used a mixture of acetonitrile and 0.1% aqueous solution of formic acid at a flow rate of 0.4 ml min1. Identification and quantitation of the analyzed drug samples were carried out using mass spectrometer equipped with electrospray ionization source operated in negative ionization mode. The linear range of the proposed method was found to be in the range of 18–270 ng ml1 for all drugs with limit of detection in the range of 1.25 to 1.89 ng ml1.
Mohammad Mezbaul Alam,Zeid A. AlOthman,Mu. Naushad,Taieb Aouak 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.2
In this study, the ion exchange kinetics of selected heavy metals such as Cd, Cu, Pb and Zn through thepyridine based thorium(IV) phosphate composite cation exchange material was studied. The ionexchange kinetics over this composite cation exchanger followed the particle diffusion controlled ionexchange phenomenon. Kinetics parameters also revealed that the mechanism of ion exchange for heavytoxic metal ion is feasible to explore the wastewater treatment.