Moses Jojo Eghan
University of Cape Coast
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Publication
Featured researches published by Moses Jojo Eghan.
Isotopes in Environmental and Health Studies | 2010
Benjamin Kofi Nyarko; D.K. Essumang; Moses Jojo Eghan; Barbara Reichert; Nick van de Giesen; Paul L. G. Vlek
Floodplain wetlands influence the timing and magnitude of stream responses to rainfall. In managing and sustaining the level of water resource usage in any river catchment as well as when modelling hydrological processes, it is essential that the role of floodplain wetlands in stream flows is recognised and understood. Existing studies on hydrology within the Volta River basin have not adequately represented the variability of wetland hydrological processes and their contribution to the sustenance of river flow. In order to quantify the extent of floodwater storage within riparian wetlands and their contribution to subsequent river discharges, a series of complementary studies were conducted by utilising stable isotopes, physical monitoring of groundwater levels and numerical modelling. The water samples were collected near Pwalugu on the White Volta River and at three wetland sites adjacent to the river using the grab sampling technique. These were analysed for 18O and 2H. The analysis provided an estimate of the contribution of pre-event water to overall stream flow. In addition, the variation in the isotopic composition in the river and wetland water samples, respectively, revealed the pattern of flow and exchange of water between the wetlands and the main river system.
Measurement Science and Technology | 2007
Moses Jojo Eghan; Paul K. Buah-Bassuah; Osborne Cruickshank Oppon
An opto-digital imaging system for counting and analysing tracks on a LR-115 detector is described. One batch of LR-115 track detectors was irradiated with Am-241 for a determined period and distance for linearity test and another batch was exposed to radon gas. The laser-illuminated etched track detector area was imaged, digitized and analysed by the system. The tracks that were counted on the opto-digital system with the aid of media cybernetics software as well as spark gap counter showed comparable track density results ranging between 1500 and 2750 tracks cm?2 and 65 tracks cm?2 in the two different batch detector samples with 0.5% and 1% track counts, respectively. Track sizes of the incident alpha particles from the radon gas on the LR-115 detector demonstrating different track energies are statistically and graphically represented. The opto-digital imaging system counts and measures other track parameters at an average process time of 3?5 s.
Environmental Technology | 2012
Benjamin Anderson; Moses Jojo Eghan; Elvis Asare-Bediako; Paul K. Buah-Bassuah
Violet diode laser-induced chlorophyll fluorescence was used in agronomical assessment (disease severity and average yield per plant). Because cassava (Manihot esculenta Crantz) is of economic importance, improved cultivars with various levels of affinity for cassava mosaic disease were investigated. Fluorescence data correlated with cassava mosaic disease severity levels and with the average yield per plant.
19th Congress of the International Commission for Optics: Optics for the Quality of Life | 2003
Moses Jojo Eghan; Paul K. Buah-Bassuah
An optical Fourier system comprising two Fourier lenses arranged in a 4 - f configuration, a CCD camera coupled to an Analogue Digital (A/D) converter and interfaced to a computer, has been found effective to image and discriminate real etched alpha tracks and artifacts on LR-115. The choice of the optical components enhanced the systems sensitivity and the field of view of detector area (1.4 cm2). The use of spatial filters in the Fourier plane deforms the tracks and introduces phase variation of the Fourier transform signal. In addition narrow bandwidth filters could not cover broader range of all the tracks. Image analysis before track counting improves signals to noise ratio and increase the selectivity of the tracks signal size. The system can handle higher track density and other types track detectors.
Applied Physics research | 2014
Jerry Opoku-Ansah; Moses Jojo Eghan; Benjamin Anderson; Johnson Nyarko Boampong; Moses Jojo
African Review of Physics | 2011
Moses Jojo Eghan; Osborn C. Oppon; Kofi B. Nyarko; Paul K. Buah-Bassuah
Open Journal of Biophysics | 2017
Peter Osei-Wusu Adueming; Moses Jojo Eghan; Benjamin Anderson; Samuel Kyei; Jerry Opoku-Ansah; Charles L.Y. Amuah; Samuel Sonko Sackey; Paul K. Buah-Bassuah
Mathematical Models and Methods in Applied Sciences | 2017
Jerry Opoku-Ansah; Benjamin Anderson; Moses Jojo Eghan; Peter Osei-Wusu Adueming; Charles L.Y. Amuah; Samuel Sonko Sackey
Journal of Plant breeding and Crop Science | 2017
Elvis Asare-Bediako; Faustina Agyarko; M. Verbeek; Kingsley J. Taah; Aaron T. Asare; Frimpong K. Agyei; Justice Sarfo; Moses Jojo Eghan; Rofella Combey
Journal of Materials Science Research | 2017
George Amoako; Zhou Ming; Moses Jojo Eghan; Samuel Sonko Sackey