A5024290405- Environmental Toxicology and Ecotoxicology
- Pesticide and Herbicide Environmental Studies
- Microfluidic and Capillary Electrophoresis Applications
- Protein purification and stability
- Monoclonal and Polyclonal Antibodies Research
- Marine Biology and Ecology Research
- Analytical Chemistry and Chromatography
- Aquatic Invertebrate Ecology and Behavior
- Pharmaceutical and Antibiotic Environmental Impacts
- Aquaculture Nutrition and Growth
- Freshwater macroinvertebrate diversity and ecology
- Fish Ecology and Management Studies
- Viral Infectious Diseases and Gene Expression in Insects
- Enzyme Catalysis and Immobilization
- Marine and coastal ecosystems
- Aquatic Ecosystems and Phytoplankton Dynamics
- Water-Energy-Food Nexus Studies
- Coastal and Marine Management
- Network Security and Intrusion Detection
- Coastal and Marine Dynamics
- Coral and Marine Ecosystems Studies
- Coastal wetland ecosystem dynamics
- Water Quality and Pollution Assessment
- Glycosylation and Glycoproteins Research
- Mine drainage and remediation techniques
Kwame Nkrumah University
2024-2025
Kwame Nkrumah University of Science and Technology
2024-2025
Rhodes University
2011-2024
University of Cape Coast
2023-2024
Pfizer (United States)
2005-2023
University of Virginia
1998-1999
Ion-specific standards are needed to protect biodiversity
A Water Quality Index (WQI) is a tool that describes the overall water quality by combining complex and technical information into single meaningful unitless numerical value. WQIs predict since they reflect impact of multiple Parameters (WQPs) allow for spatial-temporal comparison status. Most African countries employ adapted modifying original index (or indices) propose their concepts evaluating surface groundwater, which normally accompanied irregularities. The current review examined...
<title>Abstract</title> Intrusion detection systems (IDS) play a critical role in safeguarding networks against cyberattacks. Machine learning algorithms, particularly XGBoost, have been widely adopted IDS for their robustness and efficiency. However, the performance of XGBoost can be significantly improved through hyperparameter optimization. This study proposes hybrid Firefly-Particle Swarm Optimization (Firefly-PSO) algorithm tuning XGBoost's hyperparameters to enhance intrusion...
<title>Abstract</title> A Network Intrusion Detection System (NIDS) is a widely used tool for detecting attacks and securing networks, though it commonly faces the challenge of false positives. Based on comparative analysis Firefly algorithm feature selection Particle Swarm Optimization (PSO) XGBoost, this paper introduces FAPSO-XGBoost model, which achieves higher classification accuracy than alternative models such as Random Forest, Bagging, AdaBoost. The approach begins by constructing...
Abstract Elevated instream fine sediment is one of the most important water quality stressors affecting both structure and function aquatic ecosystems. This study evaluates whether a predictable pattern trait distribution Ephemeroptera, Plecoptera, Trichoptera (EPT) can be observed along gradient stress in eight selected sites Tsitsa River its tributaries. The were classified into four site groups according to their loads. One‐way analysis variance was used test differences relative...
Abstract This work concerns the chromatographic separation of protein charge variants using pH gradients generated by step changes in buffer composition with weak base anion exchange columns. A local equilibrium model is first developed to describe transitions occurring column buffers comprising neutral, zwitterionic or positively charged species. Model predictions, based solely on resins' titration curves and obtained method characteristics, show, excellent agreement experiments, that...
Increasing human activities in coastal areas of Ghana have led to the degradation many surface waterbodies, with significant consequences for ecosystems affected areas. Thus, this extremely affects health and disrupts essential services they provide. The present study explored use benthic macroinvertebrates as an indicator estuarine along coast Ghana. Water sediment samples were collected bimonthly from Ankobra, Kakum Volta estuaries physicochemical parameters, nutrients macroinvertebrates....
Glyphosate-based herbicides used to control weeds and invading alien plant species in South Africa ultimately end up freshwater ecosystems, but no African environmental water quality guideline exists regulate these bio-active chemicals. Ecotoxicological tests assess the possibility of using lipid peroxidation (LPx) Caridina nilotica as a potential biomarker Roundup(®), glyphosate-based herbicide, pollution were conducted. In two separate tests, 40 days post hatch shrimps exposed different...
Reducing the influence of an undesired product in enzymatic reaction could have a significant impact on productivity such systems. Here, we focus removal water formed during esterification batch reactor. A commercial immobilized lipase preparation, known as Lipozyme, is used biocatalyst and propionic acid isoamyl alcohol dissolved hexane are substrates. In this system, will partition between catalyst medium. As more polar reactants converted into less ester product, partitioned towards...
Abstract This study explored the potential of three local microalgal isolates as feed for oyster larvae in laboratory‐rearing experiments, towards optimisation seed production Crassostrea tulipa to support its large‐scale farming along West African coast. Three species microalgae— Rhodomonas sp., Nannochloropsis sp. and Pseudanabaena sp.—were isolated from waters off coast Ghana, Africa, following a serial dilution technique. The growth performance was assessed laboratory through daily...
A periodic counter-current adsorptive-reactor system is developed to carry out continuous esterifications in organic solvents with immobilized enzymes. The comprises a number of fixed-beds distributed between reaction–adsorption zone and regeneration operated "merry-go-round" sequence. Water formed the reaction adsorbed preventing formation free-water phase deactivation biocatalyst. water is, turn, recovered by desorption zone. concept tested experimentally on laboratory-scale using, as...
Experimental and theoretical studies are conducted to understand the dynamic behavior of a continuous-flow fixed-bed reactor in which an esterification is catalyzed by immobilized enzyme organic solvent medium. The experimental system consists commercial lipase preparation known as Lipozyme biocatalyst, with propionic acid isoamyl alcohol (dissolved hexane) reaction substrates. A complex observed experimentally result simultaneous occurrence adsorption phenomena. Both water adsorbed...
Surface water is the recipient of pollutants from various sources, including improperly treated wastewater. Comprehensive knowledge composition necessary to make it reusable in water-scarce environments. In this work, proton nuclear magnetic resonance (1H-NMR) was combined with multivariate analysis study metabolites four rivers and wastewater treatment plants releasing effluents into rivers. 1H-NMR chemical shifts extracts CDCl were acquired Bruker 400. Chemical chlorinated alkanes, amino...