Now showing items 256-275 of 666

    • Fabrication and applications of nickel selenide 

      Hussain R.A.; Hussain I. ( Academic Press Inc. , 2019 , Article)
      This article presents synthetic strategies of different phases and morphologies of nickel selenide in terms of solid state reactions, solvothermal and hydrothermal processes, electrodeposition, precipitation reactions, ...
    • Fabrication and characterization of flexible ruthenium oxide-loaded polyaniline/poly(vinyl alcohol) nanofibers 

      Chamakh, M.; Chamakh, Mariem; Ayesh, Ahmad I.; Gharaibeh, Mohammad F. ( Wiley , 2020 , Article)
      © 2020 Wiley Periodicals, Inc. Polyaniline/poly(vinyl alcohol)/ruthenium oxide (RuO2) composite nanofibers were produced by electrospinning technique. Hydrous ruthenium chloride was used as a precursor at different ...
    • Fabrication and characterization of poly(vinyl alcohol)-Glycerol-Spinel ferrites flexible membranes 

      Shaheen, Adel; Haija, Mohammad A.; Chamakh, Mariem; Assayed, Ghada A. I.; Banat, Fawzi; ... more authors ( John Wiley and Sons Inc. , 2019 , Article)
      Polymer membranes of ferrites nanoparticles, glycerol, and poly(vinyl alcohol) (PVA) were fabricated using a solution casting method. Spinel ferrites nanoparticles, CuFe2O4 or ZnFe2O4, and glycerol were used as dopants to ...
    • Fabrication of H2S gas sensors using ZnxCu1-xFe2O4 nanoparticles 

      Haija, Mohammad Abu; Chamakh, Mariem; Othman, Israa; Banat, Fawzi; Ayesh, Ahmad I. ( Springer , 2020 , Article)
      Spinel ferrite nanoparticles can be easily retrieved and utilized for multiple cycles due to their magnetic properties. In this work, nanoparticles of a ZnxCu1-xFe2O4 composition were synthesized by employing a sol–gel ...
    • Fabrication of selective gas sensors using Fe3O4 nanoparticles decorated with CuO 

      Ahmad I., Ayesh; Salah, Belal ( Elsevier , 2022 , Article)
      Metal-oxide nanoparticles are regarded as favorable candidates for different device applications including gas sensors. Decoration of nanoparticles with smaller ones of different types enables taking advantage of the ...
    • Fabrication of Selective Sensors for Hg2+ Traces in Water Using Graphene Decorated with Metal Nanoclusters 

      Ayesh, Ahmad I.; Karam, Zainab; Awwad, Falah; Meetani, Mohammed A. ( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)
      Mercury metal is released into water by different sources including sewage industrial waste, thus, it can enter human food chain. It is considered one of the most harmful pollutant of heavy metals since it is non-biodegradable, ...
    • Factors affecting university image among graduate alumni: A case study of Qatar university 

      Khalifa A., Haza; Abdel-Salam, Abdel-Salam G.; Mollazehi, Mohammad D.; Mohamed, Radwa Ismail; Hasan, Mahmood A.; ... more authors ( Elsevier , 2022 , Article)
      Various factors influence the students' perception of universities and university image. This study explores five factors affecting university image among Graduate Alumni. Surveys, administered to 597 graduate alumni were ...
    • Fast and Accurate Computation of the Logarithmic Capacity of Compact Sets 

      Liesen, Jörg; Sète, Olivier; Nasser, Mohamed M. S. ( Springer Berlin Heidelberg , 2017 , Article)
      We present a numerical method for computing the logarithmic capacity of compact subsets of C, which are bounded by Jordan curves and have finitely connected complement. The subsets may have several components and need not ...
    • Fate of accidental symmetries of the relativistic hydrogen atom in a spherical cavity 

      Al-Hashimi, M.H.; Shalaby, A.M.; Wiese, U.-J. ( Elsevier Masson , 2015 , Article)
      The non-relativistic hydrogen atom enjoys an accidental SO(4) symmetry, that enlarges the rotational SO(3) symmetry, by extending the angular momentum algebra with the Runge–Lenz vector. In the relativistic hydrogen atom ...
    • Finding the Nearest Negative Imaginary System with Application to Near-Optimal Controller Design 

      Mabrok, M.A.; Mabrok, Mohamed A. ( Institute of Electrical and Electronics Engineers Inc. , 2023 , Conference Paper)
      In this paper, we consider the problem of robust stabilization of linear time-invariant systems with respect to unmodeled dynamics and structure uncertainties. To that end, we first present a methodology to find the nearest ...
    • First down converter multilayers integration in an industrial Si solar cell process 

      Dumont, Lucile; Cardin, Julien; Labbe, Christophe Labbe; Frilay , Cedric; Anglade, Pierre-Matthieu; ... more authors ( John Wiley and Sons Ltd , 2019 , Article)
      Down converter SiNx:Yb3+/SiNx:Tb3+ multilayers are deposited by reactive magnetron cosputtering with the objective of optimizing the interaction distance between Tb3+ and Yb3+ ions to favor a better light management in Si ...
    • First principle investigation of H2Se, H2Te and PH3 sensing based on graphene oxide 

      Ehab, Salih; Ayesh, Ahmad I. ( Elsevier , 2020 , Article)
      Detecting toxic gases is of great importance to protect our health and preserve the quality of life. In this work, graphene (G) and graphene oxide with three different modifications (G–O, G–OH, and G–O–OH) have been used ...
    • Fitted Galerkin spectral method to solve delay partial differential equations 

      Adam, A. M. A.; Bashier, E. B. M.; Hashim, M. H. A.; Patidar, K. C. ( John Wiley and Sons Ltd , 2016 , Article)
      In this paper, we consider a class of parabolic partial differential equations with a time delay. The first model equation is the mixed problems for scalar generalized diffusion equation with a delay, whereas the second ...
    • Fixed point results for generalized chatterjea type contractive conditions in partially ordered G-metric spaces 

      Khan, Safeer Hussain; Abbas, Mujahid; Nazir, Talat ( Hindawi Publishing Corporation , 2014 , Article)
      In the framework of ordered G -metric spaces, fixed points of maps that satisfy the generalized Chatterjea type contractive conditions are obtained. The results presented in the paper generalize and extend several well ...
    • Fixed point results of F-rational cyclic contractive mappings on 0-complete partial metric spaces 

      Mustafa, Z.; Mustafa, Zead; Khan, Sami Ullah; Jaradat, M. M.M.; Arshad, Muhammad; ... more authors ( Forum-Editrice Universitaria Udinese SRL , 2018 , Article)
      Wardowski [19] introduced a new concept of contraction which called F-contraction and proved a fixed point theorem on complete metric space. Following this direction of research, in this paper, we introduce an F-rational ...
    • Fixed point results using Ft-contractions in ordered metric spaces having t-property 

      Aydi H.; Rashid T.; Khan Q.H.; Mustafa Z.; Jaradat M.M.M. ( MDPI AG , 2019 , Article)
      In this paper, we prove the existence of fixed points of Ft-contraction mappings in partially ordered metric spaces not necessarily complete. We require that the ordered metric space has the t-property, which is a new ...
    • Fixed point theorems for weakly T-Chatterjea and weakly T-Kannan contractions in b-metric spaces 

      Mustafa, Zead; Roshan, Jamal Rezaei; Parvaneh, Vahid; Kadelburg, Zoran ( Springer-Verlag , 2014 , Article)
      In this work, we obtain some fixed point results for generalized weakly T-Chatterjea-contractive and generalized weakly T-Kannan-contractive mappings in the framework of complete b-metric spaces. Examples are provided in ...
    • Flow and heat transfer analysis of Jeffery nano fluid impinging obliquely over a stretched plate 

      Mehmood, Rashid; Nadeem, S.; Saleem, S.; SherAkbar, Noreen ( Taiwan Institute of Chemical Engineers , 2017 , Article)
      This study investigates the problem of oblique stagnation point flow using Jeffery nanofluid as a rheological fluid model. Effects of thermophoresis and Brownian motion are taken into account. The governing nonlinear partial ...
    • Forecasting the impact of environmental stresses on the frequent waves of COVID19 

      Yu, Zhenhua; Abdel-Salam, Abdel Salam G.; Sohail, Ayesha; Alam, Fatima ( Springer , 2021 , Article)
      A novel approach to link the environmental stresses with the COVID-19 cases is adopted during this research. The time-dependent data are extracted from the online repositories that are freely available for knowledge and ...
    • Formation of a cold antihydrogen beam in AEGIS for gravity measurements 

      Testera, G.; Belov, A. S.; Bonomi, G.; Boscolo, I.; Brambilla, N.; ... more authors ( AIP Publishing , 2008 , Article)
      The formation of the antihydrogen beam in the AEGIS experiment through the use of inhomogeneous electric fields is discussed and simulation results including the geometry of the apparatus and realistic hypothesis about the ...