Department of Physics: Recent submissions

  • Rainfall variability over Ghana: model versus rain gauge observation 
    Nkrumah, Francis; Klutse, Nana Ama Browne; Adukpo, David Cudjoe; Owusu, Kwadwo; Quagraine, Kwesi Akumenyi (University of Cape Coast, 2014)
    This paper used the International Centre for Theoretical Physics (ICTP) Regional Climate Model, Version 3 (RegCM3) and rain gauge data selected from the Ghana Meteorological Agency (GMet) from 1990 to 2008 to investigate ...
  • Quantitative assessment of image quality in mammography: results from phantom studies in Ghana 
    Sosu, Edem; Boadu, Mary; Mensah, Samuel Yeboah (University of Cape Coast, 2017)
    Quantitative image quality assessment have been undertaken on eight (A – H) mammography systems in Ghana to review the overall condition of mammography equipment with respect to image quality in order to suggest improvements ...
  • Quantitative pore characterization of polyurethane foam with cost-effective imaging tools and image analysis: a proof-of-principle study 
    Yunus, Shemmira; Sefa-Ntiri, Baah; Anderson, Benjamin; Kumi, Francis; Mensah-Amoah, Patrick; Sackey, Samuel Sonko (University of Cape Coast, 2019-11-14)
    This study investigated the pore characterization of polyurethane (PU) foam as a necessary tep in water filtration membrane fabrication. Porous material characterization is essential for predicting membrane performance, ...
  • Quantitative epithermal neutron activation analysis of seven micro elements in breast milk of lactating mothers from the Central region of Ghana 
    Aboh, Irene Korkoi; Vowotor, Michael K.; Druye, Andrews Adjei (University of Cape Coast, 2020)
    Background Epithermal instrumental neutron activation analysis (EINAA) technique is used for the determination and estimation of the concentration levels of micronutrients such as Sodium (Na), Magnesium (Mg), Potassium ...
  • Propagation of ultrasonic waves in bulk gallium nitride (gan) semiconductor in the presence of high-frequency electric field 
    Mensah, S.Y.; Mensah, N.G.; Elloh, V.W.; Banini, G.K.; Sam, Frederick; Allotey, F.K.A. (University of Cape Coast, 2005)
    The propagation of ultrasound is studied in bulk GaN semiconductor in the presence of a strong, ac field oscillating at a frequency much higher than that of the ultrasound. Analytical expressions have been obtained for the ...
  • PROMSAR: A backward Monte Carlo spherical RTM for the analysis of DOAS remote sensing measurements 
    Palazzi, E.; Petritoli, A.; Giovanelli, G.; Kostadinov, I.; Bortoli, D.; Ravegnani, F.; Sackey, S.S. (University of Cape Coast, 2004)
    A correct interpretation of diffuse solar radiation measurements made by Differential Optical Absorption Spectroscopy (DOAS) remote sensors require the use of radiative transfer models of the atmosphere. The simplest models ...
  • Prediction of organ and effective dose with known mas and kvp for dose optimisation protocol and recommendations in CT 
    Issahaku, Shirazu; Mensah, Y. B.; Schandorf, Cyril; Mensah, S. Y.; Sackey, Theophilus; Dery, Theresa Bebaaku; Pokoo-Aikins, Mark; Eduful, Ernest Kojo (University of Cape Coast, 2017)
    In medical exposure dose to patients are determine by input parameters including mAs, kVp, pitch factor among other factors. The aim of this study is to provide procedure and protocol of how to assess patients’ dose (organ ...
  • Polarization instability shift in birefringent single mode optical fibers 
    Ishiekwene, G.C.; Mensah, S.Y.; Brown, C.S. (University of Cape Coast, 2000)
    An intensity-dependent change in ellipticity of an input light beam leads to a characteristic shift in polarization instability. The presence of dichroism gives rise to self-induced ellipticity effect in the polarization ...
  • Photothermal Lens Spectrometry Measurements in Highly Turbid Media 
    Marcano, Aristides; Basaldua, Isaac; Villette, Aaron; Edziah, Raymond; Liu, Jinjie; Ziane, Omar; Melikechia, Noureddine (University of Cape Coast, 2013)
    We measured the photothermal lens signal in samples exhibiting high turbidity using a pump-probe scheme. We show that the photothermal lens signal properties remain nearly unchanged up to values of turbidity of 6 cm1 despite ...
  • Photon-assisted process and high-harmonic dynamic localization in graphene nanoribbons 
    Musah, Rabiu (University of Cape Coast, 2012)
    We used a complete tight-binding band structure of grapheme nanoribbon to obtain, for the first time, analytical techniques for observing photon assisted transport, and dynamic localization of electrons in the graphene ...
  • Photo-degradation of microbes in hand-dug well-water using different radiation sources 
    Sackey, S. S.; Mensah-Amoah, P.; Amoako, G.; Vowotor, M. K.; Sefa-Ntiri, B.; Birikorang, E. (University of Cape Coast, 2019)
    Microbial bacteria in well-water have been treated using three different radiations and efficiency of treatment determined. The radiations were SUV (Sun with UV); SNoUV (Sun with NoUV, sun with UV portion filtered out) and ...
  • Performance evaluation of a deployed 4g Lte network 
    Tchao, E.T.; Gadze, J.D. (University of Cape Coast, 2018)
    In Ghana and many countries within Sub-Sahara Africa, Long Term Evolution (LTE) is being considered for use within the sectors of Governance, Energy distribution and transmission, Transport, Education and Health. Subscribers ...
  • Opto-electronic system for displacement and vibration measurements 
    Francini, F.; Macchiarulo, M.; Tiribilli, B.; Buah-Bassuah, P. K. (University of Cape Coast, 1987)
    A device capable of measuring small displacements ~nd vibrati~ns o~ a n:oving body is .presented. A small mirror, firmly attached to the object unde~ mv.eStlgatlOn, defiect~ a paIr ~~laser beams onto two distinct photodetectors. ...
  • Optical imaging method for determining symptoms severity of cassava mosaic disease 
    Anderson, Benjamin; Eghan, Moses Jojo; Asare-Bediako, Elvis; Buah-Bassuah, Paul Kingsley (University of Cape Coast, 2015-10-10)
    Cassava mosaic disease (CMD) is a major constraint to cassava production in cassava growing regions. Severity of CMD symptoms on cassava leaves is usually assessed visually using an arbitrary scale, which is semi-qualitative, ...
  • Optical identification of plasmodium alciparum malarial byproduct for parasite density estimation 
    Opoku-Ansah, Jerry; Eghan, Moses Jojo; Anderson, Benjamin; Boampong, Johnson Nyarko; Edziah, Raymond; Adueming, Peter Osei-Wusu; Amuah, Charles Lloyd Yeboah (University of Cape Coast, 2019-11-11)
    Plasmodium alciparum (P. alciparum) malarial degree of infection, termed as parasite density (PD), estimation is ital for point of-care diagnosis and treatment of the disease. In this work, we present application of optical ...
  • One-step real-image reflection holograms 
    Buah-Bassuah, Paul K; Vannoni, Maurizio; Molesini, Giuseppe (University of Cape Coast, 2017-02-21)
    A holographic process is presented where the object is made of the real image produced by a two-mirror system. Single-step reflection hologram recording is achieved. Details of the process are given, optics concepts are ...
  • On the amplification of acoustic phonons in carbon nanotube 
    Dompreh, K. A.; Mensah, N. G.; Sakyi-Arthur, D.; Mensah, S. Y. (University of Cape Coast, 2016)
    We present a theoretical study of acoustic phonons amplification in Carbon Nanotubes (CNT). The phenomenon is via Cerenkov emission (CE) of acoustic phonons using intraband transitions proposed by Mensah et. al., [1] in ...
  • On a liquid drop ”falling” in a heavier miscible fluid 
    Buah-Bassuah, Paul K.; Rojas, Rene; Residori, Stefania; Arecchi, F.T. (University of Cape Coast, 2005)
    We report a new type of drop instability, where the density difference between the drop and the solvent is negative. We show that the drop falls inside the solvent down to a minimum height, then fragmentation takes place ...
  • Nonlinear polarization effects in a birefringent single mode optical fiber 
    Ishiekwene, G.C.; Mensah, S.Y.; Brown, C.S. (University of Cape Coast, 2001)
    The nonlinear polarization effects in a birefringent single mode optical fiber are studied using Jacobi elliptic functions. We find that the polarization state of the propagating beam depends on the initial polarization ...
  • Nonlinear conductivity in graphene 
    Abukaria, S. S.; Mensah, S. Y.; Musah, R.; Mensah, N. G.; Dompreh, K. A. (University of Cape Coast, 2015)
    We consider the tight-binding approximation for the description of energy bands of graphene, together with the standard Boltzmanns transport equation and constant relaxation time, an expression for the conductivity was ...

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