Articles
Page 10 of 1253, showing 50 records out of 62615 total, starting on record 451, ending on 500
African Journal of Environmental Science and Technology
Modeling and simulation of reactors in plug flow reactor (PFR) and Packed Bed Reactor (PBR) series for the conversion of methanol into hydrocarbons
August 2022
The aim of this paper is to size the PFR reactor and to deduce the likely useful mass of the catalyst in the PBR for the production of hydrocarbons such as propane, butane and pentane from methanol via dimethyl ether (DME). The use of these reactors would require kinetic analysis, material balance, energy balance and then sizing. The interest in the chemical catalytic conversion of synthesis gas to gasoline suggests...
African Journal of Agricultural Research
Social network analysis of innovation platforms in the local rice value chains in Benin: Shield or showcase for endogenous innovation?
August, 2022
Innovation platforms (IPs) bring agricultural value chain stakeholders together to successfully overcome constraints in agricultural systems. In Bénin, they are introduced to foster collaboration, partnership, and mutual focus to generate innovation on the commodity such as the local rice production and processing systems. Based on Social Networks Analysis, this research examines this IPs in influencing the...
Journal of Economics and International Finance
The impact of import substitution policy on trade and exchange rate: An empirical analysis from Ghana
July-September 2022
This research examines the impact of import substitution policy on the trade balance and exchange rate in Ghana by employing the macroeconomic variables – inflation rate and interest rate. For a robustness check, the policy is analyzed using the augmented trade balance and magnitude of import substitution approaches. The study utilizes quarterly data from 1990Q1 to 2021Q1 and applies the Johansen cointegration...
African Journal of Biotechnology
Assessment of Exserohilum turcicum using molecular markers for sustainable maize production in Tanzania
August 2022
The Exserohilum turcicum fungus causes the Northern leaf blight (NLB) of maize all over the world. In Tanzania, this disease is considered as a major foliar disease with yield losses of 23.9 to 62.8%. To understand the genetic variations of E. turcicum from maize fields in Tanzania, a survey was conducted in four regions, including Morogoro, Iringa, Njombe, and Mbeya. Leaf samples were collected from diseased plants...
African Journal of Agricultural Research
Effect of soil-applied and foliar fertilizer on rice (Oryza sativa)
August, 2022
Utilization of foliar fertilizer is not a common practice in field crop production in Ghana, upon this background this research was carried out to assess the combined effect of soil-applied and foliar fertilizer on growth and yield parameters of rice. Four treatments comprising of a control, soil-applied fertilizer and three others comprising of a combination of soil-applied and foliar fertilizer were used. The analyzed...
African Journal of Food Science
Microbial safety and biodiversity of bacterial communities in traditional Egyptian cheese types
August 2022
In this study, 19 cheese samples from six common Egyptian cheese types were evaluated for microbiological safety and bacterial diversity using 16S rRNA gene amplicon sequencing analysis. Results showed that the total viable count exceeded 5.2 log CFU g-1 in 13 cheese samples. Further, the count of Enterobacteriaceae varied in the range 2.0 to 6.7 log CFU g-1 in 17 samples. PCR-based detection of pathogenic strains...
African Journal of Agricultural Research
Morphological and molecular diversity of arbuscular mycorrhizal fungi associated to Carica papaya L. rhizosphere in two agro-ecological zones in Cameroon
August, 2022
The papaya tree is not very exploitable on the international market because of the post-harvest decline of the fruits. In this study, we identified arbuscular mycorrhizal fungi (AMF) from the rhizosphere of papaya in two agroecological zones of Cameroon (Njombe-Pendja: NP and Yaounde: Y). Morphological studies on the density, the rate of root colonization, the diversity of AMF species were evaluated. Molecular...
African Journal of Plant Science
Potential and measures for sustaining Prunus africana (Hook.F.) Kalkman (Rosaceae) in Tchabal Mbabo forest (Mf), Adamaoua Cameroon
August 2022
Prunus africana (Hook. F.) Kalkman is a medicinal plant for which the bark is used to treat benign prostate hypertrophy. P. africana is listed in Appendix 2 of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES). Its exploitation has been regulated in Cameroon through the settlement of some management standards. This paper aims to assess the potential of P. africana in the Tchabal...
African Journal of Microbiology Research
Fungal colonization of air-conditioning systems and indoor cultivated plants and its relation to human health
August 2022
Fungi have been implicated as quantitatively the most important bio-aerosol component of indoor air associated with contaminated air-conditioning systems and soil of indoor cultivated plants. The objectives of this study were not only to assess the level of fungal contamination in the filter dust of air conditioning systems and soil of indoor cultivated potted plants present inside homes, offices and hospitals for one...
African Journal of Plant Science
Genetic diversity in pepper (Capsicum annum L.) germplasms using SSR markers
August 2022
Analysis of pepper genetic diversity and genetic relationship is important in selecting genetically diverse parental lines drawn from several genetic populations, and also helps to implement effective conservation strategies. For this purpose, 25 pepper genotypes comprising both accessions and improved varieties were examined using 16 SSR markers. The markers were polymorphic and showed a mean PIC value of 52% with a...
African Journal of Agricultural Research
Effects of the naked neck phenotype and feed withdrawal on growth performance and carcass characteristics of F1 crossbred broilers from a cross between local naked neck males and Hubbard Flex 15 broiler females
August, 2022
An eleven-month experiment was conducted to establish the influence of phenotype and feeding systems on growth performance and carcass characteristics of F1 crossbred broilers. One hundred normal feathered broiler breeder females were mated with 10 naked neck males to obtain the F1. Two hundred and seventy-two chicks obtained from the F1 generation and from four hatches were randomly assigned into four treatments...
Journal of Plant Breeding and Crop Science
Inheritance of stay green physiological determinants in drought tolerant maize inbred lines
July-September 2022
Stay green is the plant’s ability to sustain photosynthetically functional green leaf area for longer periods, even with excessive water stress. This study was done to understand the gene action that controlled inheritance of the stay green trait with the general objective of contributing to breeding more drought tolerant maize varieties. 10 F1 hybrids from crosses between highly performing and the least...
Scientific Research and Essays
Factors of geomagnetic storms during the solar cycles 23 and 24: A comparative statistical study
July-September, 2022
The solar sources of 884 geomagnetic storms have been studied for the solar cycles 23 and 24 (1996-2019), regardless of their size ranges; using the Kp index and the NOAA G criteria (minor to extreme storms). It claims from our investigation that fast solar wind streams (HSSWs) is the main factor of small (G1) and medium (G2) storms and occur mostly on the descending phase of the solar cycle. Fast solar wind has...
African Journal of Business Management
The impact of social crowding on color saturation preference: The mediating role of threat to freedom and avoidance behavior
August 2022
This study explores the impact of social crowding on color saturation preference and its internal psychological mechanism. In three studies (333 subjects), two different stimuli are used to manipulate the level of social crowding to probe into individuals' preference for product color saturation in socially crowded settings. The findings reveal that in socially crowded environments, individuals prefer products with...
Journal of Medicinal Plants Research
Ethno botanical study of medicinal plants used by Baka people in the treatment of erectile dysfunction
August, 2022
Erectile dysfunction is a disease that is increasingly affecting men. The study examined the traditional use of medicinal plants in the treatment of erectile dysfunction among the Baka people in the eastern region of Cameroon. The study took place over interspersed periods from January 2018 to January 2021 in 9 villages. Forty-four people were interviewed via a questionnaire. One hundred and fifty-nine citations and 71...
African Journal of Food Science
A comparative study of the use of radiation, lemon juice, and vinegar for the preparation and preservation of African giant snails (Achatina and Archachatina)
August 2022
African giant snail is a popular alternative source of animal protein in Ghana and many other countries. The meat is high in lean protein and mineral elements. Ready-to-use meat obtained from snails can compete with animal proteins found on the market. After shelling, snails produced some slime that interfered with preparation and processing of the meat. This study aimed to provide consumers with ready-to-use fresh...
African Journal of Pure and Applied Chemistry
Assessment of proximate and physicochemical properties of crude palm oil from south-west and South-south Nigeria
July-September, 2022
Crude palm oil is most worlds widely used oil, due to its nutritional and economic advantages. The proximate and physicochemical properties of fifty samples from local mills in Southern Nigeria were analyzed to determine their applicability as food and industrial usage applying standard procedures. The obtained results were: Moisture content (1.51 to 2.46%), ash content (0.30 to 0.50%), crude lipids (68.82 to76.77%),...
African Journal of Agricultural Research
Implications of diet and quality consistence of feed on poultry layers egg quality
August, 2022
Impaction of different brands of commercial layers feeds on egg quality was assessed in a complete block design with five treatments in three blocks replicated with twenty birds each. Hyline birds and the deep litter system were used. Feed constituents from proximate analysis were linearly correlated to quality parameters measured on the eggs. Results showed that nutrition impacts on most egg quality parameters except...
Journal of Hospitality Management and Tourism
A review of the role of tour operators towards sustaining ecotourism in Tanzania
July-December 2022
This review paper assesses the role of tour operators towards sustaining ecotourism in Tanzania. The motive behind it is based on the argument that tour operators have an important role within the ecotourism multi-stakeholder. However, little has been documented on how best to engage them for sustainable ecotourism. Thus, this paper provides a concise overview of the relevant literature, highlighting existing knowledge...
Journal of Development and Agricultural Economics
Determinants of agricultural commercialization in smallholder farmers in Zimbabwe: The case of Zhombe North Rural District
July-September 2022
Agricultural commercialization raises farm incomes and improves living standards in African farming populations. Despite its importance, it remains low in Africa. Limited studies in agricultural commercialization have explored different tools for analysis given the agricultural commercialization indicators with zeros and fractions. This paper addresses methodological issue and adds literature on factors affecting...
African Journal of Pharmacy and Pharmacology
Evaluation of the pharmaceutical quality of two nutraceutical lysine products in South Africa
August 2022
Dietary supplements, particularly nutraceuticals, are an expanding sector on the South African market, especially since the beginning of the COVID-19 pandemic. However, regulatory authorities do not regulate nutraceuticals and concern arose regarding safety, quality and efficacy of the product reaching the end-user. The aim of the study was to evaluate the pharmaceutical quality, specifically the physical and the...
African Journal of Agricultural Research
Factors that influence the dominance of X-Jigna cultivar under smallholder rice production in Fogera Plain, Northwest Ethiopia
August, 2022
The aim of this study is to learn more about the status and factors that influence the uptake of improved rice varieties in the Fogera plain, a well-known rice-growing area in Ethiopia. A total of 155 rice-producing households were chosen through a systematic random sampling method. Simple descriptive statistics like mean, frequency, percentage, and standard deviation were utilized to characterize the sample households,...
International Journal of Livestock Production
Factors affecting the hatchability of snail eggs (Archachatina marginata) in the Western Highlands of Cameroon
July-September 2022
A study to investigate the factors affecting hatchability of Archachatina marginata eggs, had 600 eggs collected from snail pens and incubated in treated substrates; moist soil/sawdust mixture (MSD), moist sawdust (MD), moist soil (MSb), dry sawdust (DD) and dry soil (DS) as well as in rearing pens (1 m × 1 m × 0.8 m) containing moist soil (MSp). Results showed that snail egg weights at ...
Educational Research and Reviews
Motivation heightens and independent thinking deepens: Undergraduate students share their experiences of PBL while learning Microeconomics
August 2022
The aim of this study is to analyze the use of Problem-Based Learning (PBL) in learning Microeconomics. It aims to answer the following research questions: What are the experiences of undergraduate students who studied with Problem-Based Learning (PBL)? Is this strategy useful at the undergraduate level? Does PBL really motivate students? Does it foster independent thinking? These questions are interesting but very...
African Journal of Plant Science
Alleviation of Huanglongbing disease in citrus by foliar application of microelements
August 2022
Huanglongbing (HLB), also referred to as citrus greening disease, ranks high among the most destructive diseases in citrus plants worldwide. This disease is caused by the Gram-negative bacterium Candidatus Liberibacter species. As a strategy for the appropriate management of this disease has not been established yet, economic cultivation of citrus in the diseased areas has mostly ceased. One of the most conspicuous...
African Journal of Biotechnology
Studies of Salvia officinalis leaf extract on some biochemical parameters in rats induced with overdosed-tramadol
August 2022
The aim of the study was to evaluate the effect of Salvia officinalis leaf extract in overdosed-tramadol induced rats. Standard methods of analysis were used for the study. Fifty rats were divided into Group A (Control) - feed and water only, Group B-induced with tramadol at 50 mg/kg body weight, Group C-induced with tramadol + 150 mg/kg of S. officinalis leaf extract, Group D-tramadol + 300 mg/kg S. officinalis...
Journal of Ecology and The Natural Environment
Water quality and ecological stress of fish in the Bandama River Estuary (Cote d'Ivoire, West Africa)
July-September 2022
The Bandama River contributes essentially to the well-being of the Ivorian population. Unfortunately its biodiversity is strongly threatened by human activities. In order to assess the water quality of the Bandama River and its impact on fish fauna, a scientific study was carried out from March 2019 to February 2020 in its estuarine zone. Thus, the physico-chemical variables of the water, the contents of Pb, Mn, Fe, Cd...
Educational Research and Reviews
Effects of Whatsapp group learning platform on senior secondary schools students’ learning outcomes in Science, Technology, and Mathematics (stm) in Ekiti State, Nigeria
August 2022
The study investigated the effects of the WhatsApp Group Learning Platform (WGLP) on Senior Secondary School (SSS) Students' Learning Outcomes in Science, Technology, and Mathematics (STM) in Ekiti State, Nigeria. The sample comprised 100 SS II students from two public secondary schools in Ekiti State who were randomly selected from their classrooms. A multistage sampling technique was used to pick the sample. Data...
Journal of Development and Agricultural Economics
Adoption of electronic commerce by agribusiness small medium enterprises in the upper east region of Ghana
July-September 2022
Technological evolution has triggered more advanced market-based approaches to the transfer of goods, services, and information. In Ghana, Agribusiness small-medium enterprises' electronic commerce adoption is concentrated in Accra and Kumasi. This study spotting the research gap in Agribusiness small-medium enterprises' electronic commerce adoption selected the Upper East Region for the study. The study is...
African Journal of Environmental Science and Technology
An appraisal of phytoremediation as an alternative and effective remediation technology for crude oil- contaminated soils: A review
August 2022
The review investigates phytoremediation as an alternative environmentally-friendly method of cleaning and restoring hydrocarbon contaminated soils. Phytoremediation is a ‘green’ technology that exploits the natural ability of green plants to remove, degrade or suppress contaminants in soils, sludges, sediments, surface-water and ground-water in an ecologically-friendly manner. Its processes are stimulated...
African Journal of Pure and Applied Chemistry
Dichlorodiphenyltrichloroethane (DDT) and its metabolites in house dust, soil and selected food crops from indoor residual sprayed areas of Apac and Oyam Districts, Uganda
July-September, 2022
Dichlorodiphenyltrichloroethane (DDT) levels and its metabolites are reported in 75 soil and 75 vegetable samples from the vicinity of homesteads sprayed with DDT during indoor residual spraying (IRS) pilot exercise, carried out in 2008 in Apac and Oyam districts, Uganda as a measure to control malaria. The samples were randomly and conveniently collected in 2020 from selected villages of the districts, extracted using...
African Journal of Biotechnology
The value-chain of cotton industry in Kenya with focus on product stewardship for timely provision of certified quality Hybrid Bt cotton seeds to farmers
August 2022
For there to be sustainable revival of Kenya’s Cotton Industry, its cotton-value needs to be analyzed, there is need to identify its weak points and implement measures to ameliorate its key constraints. Various authors have developed and analyzed the value-chain of the Cotton Industry in Kenya. This paper reviews important components of the value-chain focusing on strengthening the supply of safe, adequate and...
African Journal of Biotechnology
Rhizosphere competence and abiotic stress tolerance of commercially sold Pseudomonas fluorescens biofertilizers: Implications for their
bioremediation potential
August 2022
Microbial remediation research has become front and centre gaining momentum for numerous environmental biotechnological applications. Agronomical bioproducts have been widely used for many years and their availability, low costs and safety makes them potentially suitable for alternative biotechnological applications, specifically environmental remediation. In this study, the commercially available biofertilizer,...
African Journal of Microbiology Research
Microbiological characterization of traditionally fermented food in southern Mozambique
August 2022
Traditionally fermented foods are source of income and improve quality of diets in rural communities. In Mozambique there are several locally fermented foods, however little is known about fermentation technology and microbial composition. This study aimed to determine physico-chemical parameters and the microbial diversity of traditionally fermented foods in Mozambique. Samples of ucanhi, maheu, massi and rhali were...
African Journal of Biotechnology
Association of serum MMP-9 with recurrence in patients with resectable esophageal squamous cell carcinoma after chemotherapy or concurrent radiotherapy
August 2022
Esophagectomy is a common standard treatment of localized disease. However, local recurrence frequently occurs in patients with advanced esophageal squamous cell carcinoma (ESCC) after operation, resulting in the need for using biomarkers to evaluate recurrence in patients with advanced ESCC during postoperative therapies. This study examined serum matrix metalloproteinase-9 (MMP-9) as a prognosis factor in recurrent...
Journal of Medicinal Plants Research
Piper rivinoides Kunth: A medicinal plant that preserves bioactive chemical substances in its essential oil throughout the seasons
August, 2022
The chemical composition and seasonal variation of essential oils (EO) extracted from the aerial parts of the traditional medicinal plant Piper rivinoides were analyzed using gas chromatography (GC) coupled with mass spectrometry (MS) and GC coupled with flame ionization detector (GC-FID) technique, respectively. The wild plants were collected from two different sites in the Atlantic Forest. The analysis allowed us to...
Journal of Economics and International Finance
The nexus between savings and investment in the East African Community: Co-integration and error correction models
July-September 2022
This study examines the effect of savings on investment in East African countries in the face of the recent reduction in trade barriers and other regional integration policies. The findings reveal that among all the regions in Africa, East Africa had the lowest household saving for the period 2000-2016 and only Burundi and Kenya savings and investment rates were co-integrated. The policy implication is that the domestic...
African Journal of Biotechnology
Influence of arbuscular mycorrhizal fungi and phosphorous on the growth, nutrient uptake, chlorophyll content and some metabolites of eggplant (Solanum melongena L. VAR. Yalo) under saline conditions
July 2022
The effects of arbuscular mycorrhizal fungi (AMF) and phosphorous (P) on the growth, nutrient uptake, chlorophyll content and some metabolites of eggplant (Solanum melongena L. VAR. Yalo) were determined under saline conditions, through a greenhouse experiment conducted for six weeks. Seedlings were planted in polythene bags previously filled with sand, 1 g of P and 50 g of AMF for all concentrations (0, 50,...
Journal of Parasitology and Vector Biology
Cross sectional study on prevalence of malaria case and malaria infection in children under 15 years after the military crisis in Bouake, Côte d’Ivoire
July-December 2022
During the recent crisis in Côte d’Ivoire that lasted 9 years (2002-2021) many health workers were moved from the affected areas to safer places, The aim of the study is to update malaria epidemiology in one of the most affected area (Bouake city) after the crisis ended. Cross-sectional surveys were conducted in children aged 6 months - 14 years old, one in the rainy season and in the dry season in three...
International Journal of Water Resources and Environmental Engineering
Determinants of the adoption of rainwater harvesting technologies in Kebri-Beyah District, Somali Region, Ethiopia
July-September, 2022
The study was conducted in 2019 in the Eastern Ethiopia Somali region Kebri-beyah district to identify the determinants of the adoption of rainwater harvesting technologies (RWHT) in the district. The study revealed several determinants for the adoption of RWHT in Kebri-Beyah district, among the factors include a level of education, access to finance, training, extension service and approaches which are major...
Journal of Philosophy and Culture
The school and contemporary education in Nigeria: Lessons from John Dewey
July-December 2022
Education and development are dialectically intertwined, but the current approach to education in Nigeria does not really portray this dialectics. Education tends to be tailored towards paper certification. This has fostered a wrong epistemology where people see schooling as an adventure to be given degrees. This mainly theoretical research faults the Nigerian educational process and radically exposes the gulf between...
International Journal of Biodiversity and Conservation
Sampling techniques for the optimal measurements of macromycetes diversity in the Soudano-Guinean ecozone (West Africa)
July-September 2022
Fungi range among the most important organisms in the world thanks to their ecological roles in the ecosystems and their socio-economic importance for human beings. Still, the global fungal species richness is full of uncertainties as evidenced by various estimates. Estimating fungal species richness and diversity is raising many questions related to the sampling effort (in space and time). This study aims to determine...
Journal of Agricultural Extension and Rural Development
An overview of agricultural extension in Ghana and Burkina Faso and implications for sustainable agriculture in West Africa
July-September 2022
Agricultural extension is the medium through which external agricultural technologies have been transferred to and transplanted in Africa to improve agricultural performance. Over a period of close to a century, different agricultural extension models have been proposed but their structure and content has virtually been the same: top-down, linear, non-participatory transfer of technology with no feedback loops for...
African Journal of Microbiology Research
Biosorption of heavy metals using bacterial isolates from e-waste soil
July 2022
The discharge of untreated wastes containing heavy metals into the environment is a challenge to living cells, and in the search for treatment method, biosorption has been an economical and easy technique for heavy metals removal. This study was carried out to determine the biosorption capacity of bacterial isolates from electronic wastes soil. The isolates from e-waste soil were screened and selected for heavy metals...
Journal of African Studies and Development
Governance principles for local level groundwater management in Njombe District, Tanzania
July-September 2022
Groundwater governance is a necessary condition for groundwater management that in turn improves access to clean and safe drinking water. However, it is one of the developmental issues, which has not been addressed squarely in Tanzania. Using governance principles, we explored groundwater governance in Njombe district where water for domestic use depends on groundwater source. The study used cross-sectional research...
Journal of Agricultural Extension and Rural Development
The nexus between the interaction among Cowpea actors and its market shares in Uganda. A case of Oyam District
July-September 2022
With the increased use of technology in agriculture, new improved farming and varieties of seeds have been adopted. The study explored how the interaction among the actors helped in sharing vital information on market shares of improved cowpea and relative to improved beans. A cross-sectional research design was used, while quantitative and qualitative approaches were adopted. The respondents were purposively selected...
International Journal of Biodiversity and Conservation
Status of bamboo species (Poaceae) (Kunth) in Menoua, Agroecological Zone 3 of Cameroon
July-September 2022
Studies on bamboo resources are limited in Congo Basin. This study assessed species diversity, distribution, characterisation and socio-economic importance of bamboo to livelihood in Menuoa, Cameroon. Ninety questionnaires, one focus group discussion per village, observation and interviews were administered in 9 villages. Yushania alpina (K. Schum.) W.C.Lin, Phyllostachys aurea Carrière ex Rivière & C....
African Journal of Food Science
Sieving fractionation, phenolics profile and in vivo antioxidant activities of Dichrostachys glomerata Forssk. powder
July 2022
Powder fractions of Dichrostachys glomerata were produced by drying the fruits to 10% moisture, grinding followed by sieving to differentiate powders of sizes <180, 180-212, 212-315 and ≥315 µm, respectively. The obtained powders were analysed for their phenolics profile and in vivo antioxidant activities in rats were evaluated. Lyophilized ethanolic extract and crude powder were used for comparison. The...
Journal of Accounting and Taxation
Tax audit of legal entities, assisted by informational technology performed from revenue authorities
July-September 2022
This paper aims to explain how an information system upgrade aids tax authority efficiency in a developed country with significant deficiencies and weaknesses in its tax system and citizens’ tax awareness. Simultaneously, this research considers modern tax audit methods and their effect on legal entities. Through literature review, a questionnaire was drafted and sent to state tax auditors responsible for public...
African Journal of Business Management
Effect of anxiety perception on consumers’ luxury nostalgic consumption intention
July 2022
In a quest to investigate whether perceptions of death anxiety can influence the intention of nostalgia consumption of luxury brands, based on Terror Management Theory (TMT), the present study examines the influence of perceived death anxiety on consumers’ nostalgia feeling, and its impact on consumers’ intention of purchasing nostalgia luxury products. Data were collected online and offline from 419 brand...
Page 10 of 1253, showing 50 records out of 62615 total, starting on record 451, ending on 500
