Articles
Page 12 of 1277, showing 50 records out of 63847 total, starting on record 551, ending on 600
March 2024
International Journal of Physical Sciences
Extraction of ionospheric vertical total electron content (VTEC) using global navigation satellite system-continuously operating reference station (GNSS-CORS) data from station BF01 in Ouagadougou
Numerous raw data concerning the ionosphere exist almost everywhere in Africa. However, these data are underexploited due to the lack of simple methods to extract ionospheric parameters from the data. This paper presents a method for extracting vertical total electron content (VTEC) using Global Navigation Satellite System-Continuously Operating Reference Station (GNSS-CORS) raw data recorded between 01/01/2013 and...
March 2024
International Journal of Physical Sciences
Study of the high pressure and temperature response of silicon, germanium and gallium arsenide electronic energy bands
In this study we investigate the different temperature electronic energy band structure responses of silicon, germanium and gallium arsenide at various applied hydrostatic pressures within a range that does not exceed their structural phase transition pressure. The pressure coefficients for each material have been determined. An atomistic insight was presented into the question of how much of the electronic band...
March 2024
International Journal of Physical Sciences
Modelling and optimization of rice production in Nigeria: bibliometric analysis and future research.
Rice production plays a vital role in enhancing employment opportunities, GDP, and food security, thereby contributing to the prosperity of the country. This study aimed to evaluate the current state of research in the field and identify potential areas for future modeling and optimization of rice production. Data were sourced from the reputable academic citation database and research tool, Web of Science, spanning the...
March 2024
International Journal of Physical Sciences
Application of geological and geo-electric methods in the assessment of corrosivity, competence, and vulnerability of soils around Southeastern Nigeria
The study investigates the electro-geophsysical method's application to assess corrosivity, competence, and aquifer vulnerability in Njaba and its environs, in southeastern Nigeria, aiming to determine soil suitability for engineering constructions and estimate aquifer vulnerability. Urbanization in the area has led to increased man-made structures and surface pollution exposure. Twenty-three geo-electric...
March 2024
African Journal of History and Culture
Self-writing in postcolonial criticism: A survey of some fundamental problems (II)
This paper surveys a few fundamental problems that relate to postcolonial self-writing in the context of global capitalism. It advances the claim that self-writing in Anglophone Postcolonial Criticism discloses an obsessive, reductionist tenet when addressing the gaps in imperial ideology, especially with the existence of an engrafted, ubiquitous protectionism from the part of the postcolonial intellectual. This...
March 2024
Journal of Veterinary Medicine and Animal Health
Evaluation of the coccidiocidal effects of Vernonia amygdalina and Aloe vera aqueous extracts on poultry in Bambili, North West, Cameroon
Coccidiosis is a disease transmitted through ingestion of contaminated food or water with sporulated Eimeria oocysts. Bloody diarrhoea is the primary symptom. Farm poultry production systems are recently challenged with the concept of "clean, green, ethical" which promotes limited use of drugs, chemicals and hormones for poultry welfare. Substituting synthetic drugs with plant-based supplements such as...
March 2024
Journal of Accounting and Taxation
Managing, measuring, and reporting geopolitical risk exposure: New challenges and current evidence
Geopolitical risks pose a significant threat to many companies' performance, necessitating the acquisition and evaluation of reliable information to manage these risks effectively. Furthermore, increased legal requirements in recent years demand more comprehensive reports on firm-specific risks. Therefore, detailed knowledge of the regulatory framework, accounting implications, and measurement is essential for...
March 2024
Journal of Accounting and Taxation
Do firm-specific factors moderate the impact of COVID-19 on firm performance? An empirical study from listed companies in North America
In the face of unprecedented economic challenges posed by the COVID-19 pandemic, this pioneering study examines how firm-specific factors shape the pandemic's impact on firm financial performance. By analyzing data from 12,826 firm-year observations across 14 sectors in North America from 2019 to 2023, the study investigates the moderating role of company size, leverage, earnings management, CEO compensation, and...
March 2024
International Journal of Biodiversity and Conservation
Woody species composition and diversity in homegardens in Bekoji town, Southeast Ethiopia
This study assessed the role of urban homegardens in woody species conservation in Bekoji town, southeast Ethiopia. Ninety-six homegardens were identified using multistage sampling technique. Woody species inventory was made in 3103 m × 10 m quadrants. Shannon and Weaver diversity index (H`), reciprocal of Simpson diversity index (1-D), evenness index (J`) and Margalef richness index (Dmg) were computed to...
March 2024
African Journal of Bacteriology Research
Contribution of COVID-19 diagnosis in patients seen at the tuberculosis laboratory in the response to the COVID-19 pandemic in the Kayes Heath district
The COVID-19 pandemic has posed challenges to tuberculosis (TB) services, leading to an increase in TB deaths for the first time in a decade. The aim of our study was to investigate the presence of SARS-CoV-2 in patients attending the Kayes Reference Health Center for tuberculosis diagnosis and anti-tuberculosis treatment monitoring. This was a cross-sectional and prospective study conducted at the Reference Health...
March 2024
Journal of Entomology and Nematology
Comparative efficacy and cost analysis of albendazole, levamisole, and ivermectin on West African dwarf sheep in Makurdi Benue state Nigeria
Helminthosis and helminths resistance to anthelmintic is a great concern in the management of sheep. The efficacy of three different anthelminthics was studied in sheep. Three groups of sheep comprising seven animals each were treated with three different anthelmintics (albendazole, ivermectin and levamisole). Faecal samples were collected from each group before and after treatment. The faecal egg count (FEC) was...
March 2024
African Journal of Political Science and International Relations
African’s sub-regional bloc’s challenges in coordinating collective security amidst the influence of external state powers in African security governance: The case of ECOWAS and the roles of Nigeria, France, and the UNSC in the civil wars of Liberia and Mali
This paper analyzed regional collective security cooperation and ownership challenges under the auspices of the Economic Community of West African States (ECOWAS) vis-à-vis regional organizations' responsibilities as outlined in the UN Charter. The paper situated these challenges in the conflicting interests of Nigeria, a sub-regional hegemon or aspiring hegemon, France as an extra-regional counter-hegemony,...
February 2024
African Journal of Business Management
The economic role of micro and small-scale business enterprise in case of Meket town, North Wollo, Ethiopia
This study aimed to assess the economic role of micro and small-scale business enterprises in the case of Meket town, North Wollo. The specific objectives were to investigate employment creation in micro and small-scale business enterprises, assess the role of MSSEs in income generation, and evaluate the major constraints of MSSEs in the study area. In this study, owners of micro and small-scale enterprises and...
February 2024
Educational Research and Reviews
A review on the effect of school principals' perceptions of professional loneliness on their performance
In this research, it is aimed to make a compilation based on studies in the literature on the reflection of professional loneliness levels of Educational Managers, especially school principals, on their individual and organizational performances, and to raise awareness by drawing attention to the problems experienced. Based on the literature, the variables affecting the professional loneliness levels of school...
February 2024
Journal of Engineering and Technology Research
Design of a novel control panel for 24-Volt automatic fish feeders
This paper describes a novel control panel for programmable feeders in a production fish hatchery. This system used digital interval timers in electrical box to control three parallel rails of power outlets. Transformers were used to step down the voltage from 120 to 24-V for use by 24-V feeders. A photo-eye was incorporated into the system so that the feeder would only dispense during the daylight hours. The system...
February 2024
International Journal of Library and Information Science
Information sources, methods and challenges: perspective of first year undergraduate students of University of Cape Coast, Ghana
For the University of Cape Coast first-year students, research is an important step in determining the knowledge that best suits their needs. This study investigated the purpose of searching for information, major sources of information, information search strategies, and the challenges in information search, using the quantitative descriptive survey design. The sample size was 486, with 48.8% of the respondents aged...
February 2024
African Annals of Thoracic and Cardiovascular Surgery
The magnitude of systemic arterial oxygen saturation improvement achievable by a Blalock-Taussig-Thomas shunt: A systematic review
This study was carried out to determine the magnitude of systemic arterial oxygen saturation (SaO2) improvement caused by a Blalock-Taussig-Thomas shunt (BTTS). PUBMED (PM) and Google Scholar (GS) were searched between 1st January, 1966 and 31st March, 2023. Search terms included: Blalock, Taussig, shunt, pulmonary artery and Tetralogy of Fallot. Only full-text papers that measured pre-BTTS and post-BTTS systemic...
February 2024
Journal of Brewing and Distilling
Bacterial contamination and surface hygiene in the microbrewery environment
Bacterial spoilage has a negative impact on the quality, stability and consumer acceptance of beer. The present study was conducted to determine bacterial surface and product contamination in the microbrewery environment. HybriScan™ D Beer rapid molecular testing kits for bacterial cell counts were used to evaluate three microbreweries of similar size at eleven different locations within each brewery. Analyses of...
February 2024
International Journal of English and Literature
An in-depth review of the two most common feedback forms in English undergraduate programs: The connection of their consequential academic damages to students’ perceptions of their teachers, and how video-recorded feedback can combat these effects
This review, built upon the criticism receiver’s harmony theory and incorporating the voices of the majority of English undergraduate students and English department professors at California State University, Northridge, and North Central University as its primary foundation, explores the two most prominent types of personal feedback in undergraduate English courses. It delves into their individual psychosocial...
February 2024
Journal of Chemical Engineering and Materials Science
Exploring the biodiesel potentials of waste avocado fruit oil
The biodiesel potential of waste avocado fruit was investigated. This study is essential for utilizing the enormous waste generated from avocado cultivation in Nigeria. Biodiesel was produced using a two-step acid-base catalyzed transesterification process. The acid catalyzed esterification step was required to convert the free fatty acids present in the oil to methyl esters. Important biodiesel properties such as flash...
February 2024
African Journal of Biochemistry Research
Effect of conditions in the production of highly soluble powder from tomatoes using microbial enzyme preparation
This study develops functional food ingredients made from tomatoes. In particular, the cellulose contained in tomatoes was saccharified using microbial enzyme preparations, and the possibility of producing highly soluble tomato powder was investigated. First, the study investigated the conditions for saccharification of Avicel using enzyme preparations A, B and C. A result of saccharifying tomato powder under best...
February 2024
African Journal of Biochemistry Research
Hyperhomocysteinemia in a population of type 2 diabetics in Senegal
The objective of this study is to estimate the prevalence of hyperhomocysteinemia in a population of type 2 diabetics and to study the relationship between serum homocysteine ??levels and sociodemographic, clinical and biological characteristics in this population. This is a cross-sectional study involving 100 type 2 diabetic patients. Each patient underwent a routine biological assessment and a total homocysteinemia...
February 2024
African Journal of Environmental Science and Technology
Reusing polyethylene terephthalate bottles (PETBs) for sealing panels manufacturing: The influence of bottle types on their thermal performance
This study aims to investigate the influence of PET bottle type used during PET panel manufacturing on their thermal performance. Used PETBs are an increasing threat to the environment. Plastic wastes cause air pollution, and water and soil contamination. Nowadays, vast amounts of such waste are unsafely disposed of in Brazil. The reuse of PETBs for PET panel manufacturing may contribute to minimizing or eliminating...
February 2024
African Journal of Environmental Science and Technology
Establishing environmental specimen banking to monitor environmental challenges in Zimbabwe
The need for Environmental Specimen Banking (ESB) in African countries, particularly in Zimbabwe, to store samples of various environmental matrices for future research, tracking and evaluating the environment's quality and health over time has become more urgent than ever. ESB is a long-term repository facility that stores samples of various environmental matrices, mainly including soil, sediment, and biota, for...
February 2024
African Journal of Agricultural Research
Evaluation of Brazilian irrigated agriculture: what to expect?
Ensuring food security is a significant challenge facing our society today. The goal of irrigation management is to enhance food production within the existing agricultural areas while considering environmental sustainability. In Brazil, the high demand for irrigation, coupled with various technologies employed in food production, necessitates a comprehensive understanding of the historical context and technical...
February 2024
African Journal of Agricultural Research
Impact of nutritional sovereignty of red meat on water consumption in the agricultural sector
Given the dependency of red meat production on water-depleting fodder crops, this research aimed to measure the impact of the nutritional sovereignty of red meat on water consumption in the agricultural sector. The most important findings of this study reveal that the total water used in the production of red meat amounted to 46.68 billion cubic meters, representing 10.14% of the total water consumption in the...
February 2024
African Journal of Agricultural Research
Production and profitability of maize and soybean grown in rotation in the North-Western Free State, South Africa
The production and profitability of maize in the North-Western Free State is important for the livelihood of South Africa’s population. Most of the country’s maize is produced in the area despite its sandy soils and semi-arid climate. Crop rotation has been identified as a management practice which has potential to maintain and improve crop production and profitability. This study’s objective was to...
February 2024
African Journal of Agricultural Research
Major soil fertility and management gaps in sorghum production in Lesotho
Sorghum is an important staple crop in Lesotho, following maize and wheat. The objective of this study was to assess soil fertility and management gaps in the country and their impact on sorghum production. In July 2022, an interview involving 320 Basotho farmers was carried out in 8 districts across Lesotho. The survey indicated that sorghum yield across the nation is low (< 1 ton/ha), with the major limiting...
February 2024
African Journal of Agricultural Research
Evaluation of field performance of compact coffee variety under selected propagation methods and soil fertility amendment practices in the Northern Zone, Tanzania
This study compares the field performance of three types of seedlings propagules (cuttings, grafting and seed) when combined with 75 g NPK (20:10:10) tree-1, 37.5 g NPK + (10 and 20 Kg Farmyard manure) tree-1. Two split plot experiments laid out in a Randomized Complete Block design (RCBD) with three replications were established at Lyamungu-Kilimanjaro region and Burka-Arusha region based on the existing climatic...
February 2024
African Journal of Agricultural Research
Morphological diversity of taro genus Xanthosoma collected in four geographical areas in Côte d’Ivoire based on qualitative traits
This study is part of the context of the development and sustainable management of neglected plant genetic resources in Côte d'Ivoire, including taro. The objective is to characterize the morphological diversity within taro accessions of the genus Xanthosoma from four geographical areas of Côte d'Ivoire. The study took place in the central, eastern, western and southern geographical areas of...
February 2024
African Journal of Agricultural Research
Effect of the fertilizer application rates on the performance of the winter triticale on podzolic soil
The aim of this work was to assess the effect of different application rates of NPK fertilizer on the productivity of winter triticale varieties in podzolic soils. In this particular study, 3 varieties of winter triticale: Guera, Nemchinovskaya 56, and Nina were evaluated in 2020-2022 on the experimental fields of FIC "Nemchinovka". The best response to mineral nutrition was observed in the Guera variety,...
February 2024
African Journal of Agricultural Research
Resistance to aflatoxin contamination and genotypic colonization of Aspergillus flavus and Aspergillus parasiticus in groundnuts (Arachis hypogaea)
Groundnut (Arachis hypogaea) is an important income-generating crop in sub-Saharan Africa. Biotic factors affecting production include fungal infections caused by Aspergillus flavus and Aspergillus parasiticus leading to aflatoxin contamination. Resistant cultivars can be a potential cost-effective strategy and a feasible option to small scale farmers. This study aimed to compare the colonizing effect of the A. flavus...
February 2024
International Journal of Physical Sciences
Mapping of geological structures controlling mineralization in parts of the Lower Benue Trough, Nigeria, using high resolution aeromagnetic data
Nine Regional Aeromagnetic data sheets from the Lower Benue Trough, Nigeria have been interpreted using the centroid and forward modelling technique of spectral analysis with the aim of delineating structures that can possibly control mineralization within the trough. The residual magnetic map was analyzed using the geological cross-section to determine the number of anomalies and the Fourier transform method was used...
February 2024
International Journal of Physical Sciences
Effect of basalt on the mechanical and thermal behavior of a lightweight concrete based on Typha australis
This article examines the impact of integrating basalt aggregates into concrete based on Typha australis for housing applications. We conducted an experimental study focusing on mechanical and thermal characterization to analyze the influence of basalt aggregates compared to the results of previous work on T. australis concrete without basalt. The results indicate that both density and mechanical resistance to...
February 2024
African Journal of Biotechnology
Establishment of an efficient regeneration protocol of six different varieties of wheat (Triticum aestivum L.)
An efficient callogenesis and regeneration protocol was optimized for six different wheat (Triticum aestivum L.) varieties including Chakwal-50, Galaxy-01, NARC-09, Pakistan-13, Millat-11, and Borlog-14. For callogenesis, mature seeds of each variety were used as explant, surface sterilization, and culturing were carried out on MS medium enhanced with dissimilar levels (0.5, 1.5, 2.5, 3.5, 4.5, and 5.5 mg/L) of...
February 2024
African Journal of Biotechnology
Multi-resistance to carbapenems by the production of Imipenemase (IMP)-types carbapenemases in Gram-negative bacilli in Burkina Faso
The growing prevalence of Imipenemase (IMP) metallo-beta-lactamases (MBL) producing strains of Gram-negative bacilli (GNB) pathogens is a real concern for clinicians in the light of therapeutic impasses driven. However, resistance genes encoding these enzymes are hardly documented in Burkina Faso. This study aims to show carbapenem-resistance mediated by the production of IMP-type carbapenemase in GNB clinical strains...
February 2024
African Journal of Biotechnology
The effect of clarification methods on quality attributes of sugarcane-watermelon wine fermented by palm wine yeast (Saccharomyces cerevisiae)
Clarification of wine is aimed at improving the quality of the product by removing haze. In this study, the effect of two clarification methods namely membrane filtration technique and the use of Keiselguhr diatomaceous earth powder on the physico-chemical and sensory attributes of wine produced using sugarcane (Saccharum officinarum L) and watermelon (Citrullus vulgaris L) juice blended in the ratio 1:1 (v/v)...
February 2024
African Journal of Biotechnology
Distribution of cassava mosaic begomoviruses in the North-Western provinces of Democratic Republic of Congo
This study was carried out for the first time in the North-Western Democratic Republic of Congo (DR Congo) as part of the Viral Epidemiology in West and Central Africa (WAVE) program. Its dual aim was to identify and map the viruses responsible for African cassava mosaic in this part of the country. Cassava leaf samples were collected during a geo-referenced survey conducted from 1st February to 31st March, 2022 in...
February 2024
African Journal of Microbiology Research
Microbiological evaluation and possible origins of the microbial contamination of vegetables in Ouagadougou (Burkina Faso)
This study aimed to contribute to the health safety of widely consumed vegetables in Ouagadougou by investigating the potential contamination of onion, tomato, cucumber and lettuce with pathogenic microorganisms. A survey was conducted, involving 102 producers in fields, 102 vendors in markets, and 205 consumers. The most commonly consumed vegetables were identified as onion, tomato, cucumber and lettuce. A total of 264...
February 2024
African Journal of Microbiology Research
Antibiotic resistance profile of Escherichia coli isolates among patients suspected of urinary tract infections at the Souro Sanou University Hospital Centre of Bobo-Dioulasso, Burkina Faso
This study aims to describe the antibiotics resistance (antimicrobial resistance [AMR]) profile of Escherichia coli isolates among patients suspected of urinary tract infections (UTIs) at the Souro Sanou University Hospital Center (SSHUC) of Bobo-Dioulasso in Burkina Faso. A descriptive cross-sectional study was conducted from June 1 to August 31, 2021 at SSUHC. An exhaustive sampling was performed and the urine samples...
February 2024
African Journal of History and Culture
Bride wealth payment and girl child development challenges in Ghana: Recounting the narratives
Bride wealth payment is deeply rooted in most customary marriages in Ghana. This study examines how these entrenched practices undermine the development of the girl child, using the Bongo District in Ghana as a case study. Data were collected from 40 participants who were purposively selected in a case study design. Primary data were generated through interviews, and thematic data analysis was utilized. The study found...
February 2024
Journal of Microbiology and Antimicrobials
Staphylococcus aureus sequence type (ST) 1 isolated from sub clinical mastitis in settled Fulani herds in Kaduna State, Nigeria
A study was carried out to monitor the sequence type of Staphylococcus aureus from bovine mastitic milk in Kaduna State, Nigeria. The dairy cows and fresh milk samples were analyzed for clinical and subclinical mastitis, followed by isolation of S. aureus and antimicrobial susceptibility testing. Twenty-eight S. aureus were isolated phenotypically from bovine subclinical mastitis which were further examined molecularly...
February 2024
African Journal of Food Science
Quality variation in shea butter and olein from Irepodun Local Government Area, Oyo State, Nigeria
In this study, the physicochemical characteristics, alpha tocopherol and fatty acid profile of shea butter sold in Kishi market (Local shea butter, LSB) and the olein (local shea olein, LSO) were compared with improved shea butter (ISB) and improved shea olein, (ISO) extracted from shea kernels from Kishi farmland. The ISB had 2.06±0.03% free fatty acid, 1.02±0.03 mEqO2/kg peroxide value,...
February 2024
African Journal of Food Science
Prevalence of Campylobacter species in chicken meat retailed in Jazan City, Kingdom of Saudi Arabia
Poultry meats have been considered the primary source of campylobacteriosis infections among various foods. This study was performed to detect the presence of Campylobacter species in retail chicken meat and organs. Eighty-six samples (thighs = 21, breasts = 16, legs = 21, wings =17, and livers = 11) were collected from supermarkets and retail shops in Jazan city. Cultivation and isolation of Campylobacter species...
February 2024
Journal of Agricultural Extension and Rural Development
Panamá disease tropical race 4 in banana plantations in Mozambique: Disease intensity, spatial distribution and negative socio-economic impact
Fusarium oxysporum f. sp. cubense Tropical Race 4 (Foc TR4) devastated the second-largest banana plantation farm in Northern Mozambique, resulting in an 86% loss of the Cavendish Williams banana area and the layoff of 88% of the workers. This study conducted a field survey with 119 soil and 26 crop samples and administered a questionnaire in a quasi-experimental design with two samples, randomly selected, of unemployed...
February 2024
Journal of Agricultural Extension and Rural Development
Adoption and utilization of business innovations of agricultural research in Uganda: Empirical analysis
This paper seeks to examine the adoption of business innovations within the context of the agricultural sector in Uganda. The findings emerge from research carried out to assess the utilization of business innovations of research in Uganda considering National Agricultural Research Organization (NARO) as a reference, specifically to find out the association between innovation attributes and their use on-farm, as well as...
February 2024
International Journal of Educational Administration and Policy Studies
Compliance toward ethical leadership among school principals: A synthesis of qualitative research-based evidences
Ethical leadership has proven to be pivotal in fostering efficiency and effectiveness across various organizations. It cultivates employees' confidence, commitment, job satisfaction and enhances their performance, thereby contributing to organizational stability and competitiveness. Given its significance, ethical leadership has become a global priority, garnering attention from both organizations and educational...
February 2024
Journal of Plant Breeding and Crop Science
Genetic variability and stability analysis of multi environments trials for durum wheat grain yield in Ethiopia
Genotype x Environment interactions and identification of stable genotypes in crop breeding programs for the production of grain crops under rain fed environments have become challenging. The study aimed to identify high yielding and stable durum wheat genotypes that are best suited for the relatively long season, high rain fall wheat growing environment of Ethiopia. In the study a total of 51 durum wheat genotypes...
February 2024
Journal of Plant Breeding and Crop Science
Performance of early-maturing topcross maize hybrids across multi-environments
Maize is one of the most important cereal crops used as source of food and feed. Identification of suitable maize inbred lines and testers for the development of stable maize hybrids can be challenging. The assessments of the combining ability of selected maize inbred lines and testers, agronomic performance and yield stability of the resultant topcross hybrids would provide useful information that would guide the...
February 2024
Scientific Research and Essays
Analyzing determinants shaping access to and perceptions of campus food banks in maritime university settings
This research delves into the pervasive issue of food insecurity among university students, with a specific focus on Canada's Maritime Provinces. The study elucidates the intricate relationship between household food insecurity and critical factors that influence a student's academic performance, financial stability, and overall well-being. Additionally, it reveals a disconcerting underutilization of Campus Food...
Page 12 of 1277, showing 50 records out of 63847 total, starting on record 551, ending on 600
