Structural and magnetic properties and DFT analysis of ZnO:(Al,Er) nanoparticles

Authors: Bououdina M., Azzaza S., Ghomri R., Shaikh M.N., Dai J.H., Song Y., Song W., Cai W., Ghers M.
The structural, optical and electrical properties of un-doped and (Al,Er) co-doped zinc oxide (ZnO) powders synthesized by hydrothermal method were investigated. The obtained samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive spectroscopy and magnetic measurements. XRD results reveal that the incorporation of Al and Er in [...]

High sensitivity extended gate effect transistor based on V2O5 nanorods

Authors: Abd-Alghafour N.M., Ahmed N.M., Hassan Z., Almessiere M.A., Bououdina M., Al-Hardan N.H.
The sensing characteristics of extended gate field effect transistor (EGFET) as pH sensor based on V2O5 nanorods (NRs) was fabricated for the first time. The as-deposited V2O5 NRs onto glass substrate by using spray pyrolysis method have a diameter of 140–160 nm and a length of 300–500 nm. The V2O5 NRs based [...]

Fast foods perception among adolescents by gender and weight status

Authors: Allehdan S.S., Tayyem R.F., Bawadi H.A., Al-Awwad N.J., Al-Mannai M., Musaiger A.O.
Background: Fast food restaurants have become widespread in both developed and developing countries due to nutritional and economic transitions. The frequency of fast food intake is relatively high among adolescents; however, fast food consumption is positively associated with total energy intake and obesity in adolescents. Objective: This study aimed to [...]

Estimation of solar radiation of clear sky using non- linear methods case study: Fuerteventura (Spain)

Authors: Perez F.J.D., Chinarro D., Mouhaffel A.G., Martín R.D., Mayoral J.R., El-Hilo M., Domínguez C.M., Otín M.R.P.
The knowledge of irradiation in a geographical area is very important for multiple areas for the development of the area. Current calculation systems are based on statistical models of measurements of ground stations, or by external radiation calculations by satellite models. In this paper we show another method of calculation, [...]

Optical and magnetic properties of Ni-doped ZnO nanoparticles

Authors: Fabbiyola S., Sailaja V., Kennedy L.J., Bououdina M., Judith Vijaya J.
Zn1−xNixO with 0 ≤ x ≤ 0.2 nanoparticles (NPs) were prepared by co-precipitation with subsequent annealing at 500 °C for 2 h. For a better control of particle’s growth, a non-ionic surfactant namely Tween-80 was used during the preparation process. XRD Rietveld analysis confirmed the formation of the hexagonal wurtzite-type structure along with a secondary phase [...]

Structural characterization and antistructure modeling of cobalt-substituted zinc ferrites

Authors: Tatarchuk T.R., Bououdina M., Paliychuk N.D., Yaremiy I.P., Moklyak V.V.
The cation distribution of the spinel system Zn1-xCoxFe2O4(with x = 0; 0.1; 0.2; 0.3; 0.4; 0.5; 0.6; 0.7; 0.8; 0.9; 1.0) has been investigated by means of X-ray diffraction (XRD), Mössbauer spectroscopy and Fourier transform infrared spectroscopy (FTIR). In the present work, ferrites were prepared by co-precipitation method. XRD diffraction [...]

CHAPTER 7: Nanomaterials for Heavy Metal Removal

Authors: Azzaza S., Kumar R.T., Vijaya J.J., Bououdina M.
Wastewater containing heavy metal ions is considered as a serious environmental problem for human society. Advances in nanoscale science and engineering provide new opportunities to develop more cost-effective and environmentally acceptable water treatment technologies. Nanomaterials have a number of physicochemical properties that make them particularly attractive as nanoadsorbents for decontamination [...]

Do corporate governance and ownership structure impact dividend policy in emerging market during financial crisis?

Authors: Mili M., Sahut J.-M., Teulon F.
Purpose: The purpose of this paper is to study the impact of the ownership structure and board governance on dividend policy in emerging markets. The authors test whether the effects of corporate governance on dividend policy change during crisis periods. Design/methodology/approach: The authors use a panel regression approach on a [...]

Spinel ferrite nanoparticles: Synthesis, crystal structure, properties, and perspective applications

Authors: Tatarchuk T., Bououdina M., Judith Vijaya J., John Kennedy L.
Recent developments show that the exceptional physical, optical, magnetic, and electrical properties of spinel ferrite (SF) nanomaterials have now attracted the attention as high-density data storage materials, catalysts, gas sensors, rechargeable lithium batteries, information storage systems, magnetic bulk cores, adsorbents, magnetic fluids, microwave absorbers, and medical diagnostics. The aim of [...]

Linkage between company scores and stock returns

Authors: Celik S., Aktan B., Tvaronaviciene M., Bengitoz P.
Previous studies on company scores conducted at firm-level, generally concluded that there exists a positive relation between company scores and stock returns. Motivated by these studies, this study examines the relationship between company scores (Corporate Governance Score, Economic Score, Environmental Score, and Social Score) and stock returns, both at portfolio-level [...]
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