ABSTRACT Citrus plants are regarded as the world’s second fruit crop consumed by volume next to banana, providing food nutrients, foreign currency, raw materials for agro-industries and source of employment. The production and productivity of citrus in tropical Africa including Ghana is threatened by a number of diseases. Pseudocercospora leaf and fruit spot PFLS of citrus caused by a fungus P. angolensis is the most destructive disease of citrus in most citrus growing areas. The disease wa...
Abstract Pristine and transition metal (Fe, Mn, Co and Ni) doped ZnO powders were synthesised us- ing a hydrothermal method, and characterised by x-ray powder diffraction, ultraviolet-visible absorption spectroscopy, and photoluminescence (PL) emission spectroscopy. Synthesis was carried out at pH 3 and pH 5, and the powders annealed at 280 ◦C and 600 ◦C. Doping was done at concentrations of 1, 2, 4 and 8 mol %. Computational studies were also carried out on undoped and transition metal (...
ABSTRACT Microwave signal attenuation due to harmattan and rainfall are two of the major constraints in selecting microwave bands in Ghana. With customer complaints of signal loss during these seasons, telecommunication companies compensate for sudden losses in signal strength by amplifying the signal wave. This study investigates the effect of harmattan and rainfall on communication link for frequencies ranging from 10 to 100 GHz for two locations in Ghana, namely Axim and Tamale. Visibility...
ABSTRACT Marine-derived endophytic fungi isolated from mangrove plants are an important and novel resource of natural bioactive compounds with their potential applications in medicine, agriculture and food industry. There are many instances that seem to suggest that, some of the novel metabolites previously isolated from certain species of marine plants and invertebrates are actually metabolites of marine-derived endophytic fungi. In this project, chemical screening of mangrove plantsConocarp...
ABSTRACT Kenkey, is a maize based sour, stiff dumpling, and it is among the most common fermented cereal food products in Ghana. There are several types of kenkey, and while some are made from whole maize grains others are produced using degermed/and dehulled maize grains. The kenkey types made using dehulled maize grains are less popular and have largely remained at the level of “ethnic food”, restricted to very few socio-cultural communities. Current trends in urbanization, and the incr...
ABSTRACT Mango (Mangifera indica L.) production in Ghana has the potential of a being an economically viable venture capable of replacing cocoa as a major export earner. However, the crop is bedeviled by a miscellany of disease of the plant itself as well as the fruits. Recently a disease described as the ‘mango decline disease syndrome’ has been found in Ghana gradually taking a heavy toll of the crop in the field and a survey was carried out to substantiate this and prescribe a remedy. ...
ABSTRACT The hydrogeological conditions of University of Ghana, Legon Campus was assessed using geophysical and numerical techniques. Data from borehole lithological logs and electrical resistivity survey was used to conceptualize the hydrogeological system of the terrain whiles using MODFLOW to generate groundwater flow simulation models under steady state conditions. The objective of the study was to conceptualize the hydrostratigraphy through geophysical techniques, develop a groundwater f...
ABSTRACT Though the promotion of resistant bacteria worldwide has mainly been attributed to the injudicious use of many antibiotics, the role of non-antimicrobial drugs used in the clinical management of pathological conditions of non-infectious diseases in the modulation of microbial drug resistance or susceptibility needs to be assessed. The effects of the antibioticnon- antibiotic drug-drug interactions against bacteria in SCD patients and in other chronic diseases cannot be overemphasized...
ABSTRACT Halloysite, a natural mineral mined in many parts of the world has gained a lot of attention recently due to its ability to control and sustain the release of drugs and other active agents. It is a hollow tubular structure composed of double layer of aluminosilicate minerals in the nanometric range. They are non-toxic and biocompatible as compared to other nanocarriers. Its unique structure can be modified to improve its properties for control drug delivery applications. In this stud...
ABSTRACT Mafi-Tsawla and surroundings geologically belongs to the internal zone of the Pan-African Dahomeyide orogenic belt, in southeastern Ghana. The geology of these internal units requires a total understanding of the structures and lithological types and their sequences. However, the structural and petrologic evolution of these internal units is unresolved, and this results in limited understanding of the geology of the terrain. The objectives of this study are to conduct a systematic fi...
ABSTRACT Neoproterozoic phyllites from the Akuapim range, a prominent part of the Togo Structural Unit forms part of the Pan-African Dahoeyide orogen exposed at the southeastern part of Ghana. The area of study exhibit three varieties of phyllites which are carbonaceous, ironstained and micaceous phyllites. These phyllites have been analyzed for their mineralogical and geochemical characteristics to infer their source -area weathering, source rock composition and tectonic setting. The mineral...
ABSTRACT There is an ever-growing interest in the Paenibacillus genus as a result of reports that strains belonging to this genus have several important properties. These properties include promotion of plant growth, bioremediation and the biosynthesis of structurally intriguing molecules with unrivalled biological activities and mechanisms of action. However, the agricultural applications of the aforementioned molecules far outweigh their use in medicine. In this current report, a novel Paen...
ABSTRACT Non-ribosomal peptides (NRPs) are currently receiving considerable interests for possible development as effective alternatives to clinically failing conventional small molecule antibiotics. Particularly, NRPs produced by the genus Streptomyces have attracted considerable attention given the antibiotic production history of the genus. In this current report, a novel Ghanaian Streptomyces sp. strain DE2E isolated from the high biodiversity rich wetlands of the Brong-Ahafo Region of Gh...
ABSTRACT Global uncertainty over fossil fuels security provides the impetus for the development of fuels from renewable feedstocks. A promising route to diesel is available through transesterification of vegetable oils. In this work, there is a novel development of the true liquid crystal templating approach to the synthesis of uniformly dispersed ordered porous mixed oxides. Via this route, a family of mesoporous and mesomacroporous MgO/SBA-15 and CaO/SBA-15 catalysts with metal loading in t...
Downstream evolution of ocean properties and associated fluxes in the Greater Agulhas Current System: Ad hoc Argo experiments and modeling Tamaryn Morris The evolution of cyclonic eddies across the Southern Mozambique Chanel and the downstream evolution of the Agulhas Current was investigated using Argo floats, in combination with output from ocean general circulation reanalysis models. Two dedicated experiments were undertaken in April and July 2013, whereby eight floats were deployed within...