Articles
Page 9 of 1255, showing 50 records out of 62750 total, starting on record 401, ending on 450
November 2022
African Journal of Mathematics and Computer Science Research
Division by zero in real and complex number arithmetic and some of its implications
In this paper, an attempt is made to include division by zero in ordinary arithmetic. Counting or measuring is done to get the value of multiples, powers, quotients, sums and differences of zeros. Zero divided by zero is taken to be equal to one. There are many infinities and many zeroes. The biggest of all infinities cannot be imagined and the smallest zero cannot be imagined also. An attempt is made to define a...
November 2022
African Journal of Agricultural Research
Evaluation of a naturally ventilated solar-venturi dryer environmental effect on the quality of dried sweet-potato slices
A naturally ventilated solar-venturi dryer (NSD) was constructed using locally available materials to improve the quality of dry sweet potato slices (SPS) for small to medium scale farmers. The study investigated the efficiency of the NSD to reduce relative humidity (RH), solar radiation and temperature effect on firmness and color of dried SPS. The maximum temperature inside NSD was 44.4°C (12:00 pm) in an empty...
November 2022
African Journal of Environmental Science and Technology
An analytical assessment of brick moulding processes and its impact on local ecosystems, biodiversity, environment and human health in a rural Zimbabwean village
Climate change, environmental degradation, loss of biodiversity, changes in the ecosystem and disasters play an important role in the development and economic advancement. In Zororo Village, Zimbabwe, environmental degradation, changes in the ecosystem and biodiversity have occurred rapidly during the last few decades. A literature review, key informant interviews, and focus group discussions were the methodologies used...
November 2022
Journal of Public Health and Epidemiology
Abnormal liver function test in patients with diabetes and hypertension on treatment at the Laquintinie and Douala General Hospitals
Comorbidity of diabetes mellitus and hypertension is common, with both diseases and their treatment being able to cause liver function abnormalities, which can lead to liver failure. This study aims to access the effect of drugs used in the management of these diseases on liver function. A cross-sectional study will be conducted, followed by a case-control design. Ethical clearance will be obtained from the Faculty of...
November 2022
International Journal of Science and Technology Education Research
Laboratory report on quantification of anacardic acids from pistachio hulls
Pistachio hull contains anacardic acids. It is a salicylic acid with a side chain either saturated or unsaturated. This work focused on the efficient extraction of anacardic acids using solvent. Six aliquots were weighed and extracted with hexane, ethyl acetate, and mixture of H2O/MeOH/HCl. Hexane was the most efficient solvent due to its ability to dissolve the anacardic acids. Only one anacardic acid standard was used...
November 2022
Journal of African Studies and Development
Integration of traditional ecological knowledge and western science in natural resources management in the Okavango Delta, Botswana
Since time immemorial indigenous people (IP) utilised resources to meet their cultural needs. While the long-established utilisation of these resources modified land, however, the alteration was negligible with fewer detrimental impacts on the environment. The adoption of Western Science (WS) saw people shunning the traditional ecological knowledge (TEK), resulting in accelerated resources degradation. Utilising...
November 2022
Scientific Research and Essays
A review of research trends on Nattrassia mangiferae from 1966-2022: A bibliometric approach
In recent years, Nattrassia mangiferae has received tremendous attention as a destructive plant pathogen that may potentially infect humans and animals. The pathogen was isolated from 61 species belonging to 47 genera and 30 family plants but was most frequently isolated from Cactaceae, Rosaceae, Euphorbiaceae, Anacardiaceae, and Rutaceae hosts. To systematically and comprehensively describe the progress, trends, and...
November 2022
African Journal of Agricultural Research
Views and perspectives of local farmers on crop diversification in the North-Western Free State, South Africa
The North-Western Free State is a main contributor of South Africa’s maize production which has recently been put under enormous pressure by climate change, pests, diseases, economic factors and population growth. Crop diversification, by means of crop rotation, has potential to alleviate some of the challenges faced by the farmers and communities of the North-Western Free State. Crop rotation can improve soil...
November 2022
African Journal of Environmental Science and Technology
Evaluating SWAT model for streamflow estimation in the semi-arid Okavango-Omatako catchment, Namibia
A semi-distributed hydrological model was used for runoff estimation in the Okavango-Omatako catchment in Namibia. The model was configured for a 31-year period from 1985 to 2015. Subsequently, calibration and validation processes followed using the SUFI-2 algorithm. For evaluating catchment simulation, two methods were used: i. model prediction uncertainty measured by P-factor and R-factor and ii. Model performance...
November 2022
African Journal of Business Management
Strategies for strengthening leader-follower relationships for improving organizational performance
The paper uses a qualitative single case study approach. Participants included 14 leaders who successfully developed and implemented high-quality leader-follower relationship strategies. Data collection techniques were semi-structured face-to-face interviews, a review of company documents, and the organizations’ websites. The paper explores strategies that leaders in oil-servicing organizations use to strengthen...
November 2022
Journal of African Studies and Development
In their own voices- understanding GBV in Zimbabwe: Evidence from a survivor’s perspective
Gender based violence against women is a prevalent public health challenge that poses a serious threat to women’s physical, social and mental health. Zimbabwe has taken proactive and reactive steps to deal with gender-based violence (GBV) through legislation and policies. Despite this seemingly conducive environment 1 in 3 women continue to experience GBV in Zimbabwe. While sustained research in the country...
November 2022
Journal of Horticulture and Forestry
Effects of tillage methods and poultry manure rates on the production of Carrot (Daucus carota L) in Nsukka, Southeast Nigeria
Carrot (Daucus carota L.) has historically been classified as a northern crop because it predominantly grows in the northern regions of Nigeria. Transportation of harvested roots to the south has consequently resulted to decay, shrinkage, loss of roots due to high temperature and long distant travels, high cost of produce etc. The objective was to find out the variety and tillage method that will enhance the production...
November 2022
Scientific Research and Essays
Re-orienting developing countries scientific research for industrial development
The development of countries is now mostly dependent on their research and how fast they can convert the results into tangible products and services. Employment of research for industrial development is not being encouraged in developing countries. Developing countries must engage more in research that will contribute positively to their economy. Encouraging collaboration and entrepreneurship within and across different...
November 2022
African Journal of Food Science
Drying fish (Rastrineobola argentea) on the bank of Lake Victoria in a prototype solar-heated enclosure: Using renewable energy to reduce drying-time and improve product quality and value
Silver cyprinids (Rastrineobola argentea) are small pelagic fish endemic to Lake Victoria. High-quality dried fish are an important protein-rich human food. This study was carried out to determine if it would be practical to use renewable energy to dry silver cyprinid. Drying is presently achieved by laying fish out in the sun on the ground or on racks. In the wet seasons, however, drying is compromised and much of the...
November 2022
Journal of Stored Products and Postharvest Research
Assessment of postharvest handling practices among smallholder maize farmers in Chemba and Kondoa Districts of Central Tanzania
Post-harvest losses (PHLs) are recognized as an important challenge that exacerbates food insecurity in sub-Saharan Africa. The objective of this study was to assess postharvest handling practices among smallholder farmers of maize in Chemba and Kondoa districts, Dodoma Region, Tanzania. Data were collected using questionnaires and observation checklists through a cross-sectional field survey during the 20/21 cropping...
November 2022
African Journal of Environmental Science and Technology
Increasing soil condensation capacity for agricultural purposes
The issue of water scarcity in many parts of the world, especially in arid and semi-arid regions, is a major dilemma. The amount of moisture for plants is not comparable to rain, but in arid areas, it is a huge contribution to plant water supply. In this research, the effect of using Peltier to improve soil condensation by performing several tests was studied in order to investigate the possibility of increasing soil...
November 2022
African Journal of Microbiology Research
Performance of the PanbioTM COVID-19 Ag Rapid Test in a health care setting in Ouagadougou, Burkina Faso
This study aimed to evaluate the performance of the PanbioTM Covid-19 Ag Rapid Test (Abbott) in a medical center in Ouagadougou. The PanbioTM COVID-19 Ag test was evaluated from January 26 to March 31, 2021 in symptomatic and asymptomatic patients in the medical Centre of Kossodo. A total of 268 individuals were tested by both SARS-CoV-2 RT-PCR, and antigen RDT. Of these 268 individuals, 52 were positive and 216 were...
November 2022
African Journal of Food Science
Phytochemical characteristics and consumer acceptability of watermelon (Citrullus lanatus) wine
Wine, a fruit-based fermented and non-distilled product, containing most of the nutrients in the raw fruit. Wine production, particularly grape wine, is one of the oldest technologies in the history of man. Other fruits such as pineapple, have been used for wine production. The research was conducted to determine the phytochemical characteristics and consumer acceptability of watermelon wine produced using four...
November 2022
International Journal of Psychology and Counselling
Quantile regression, a little-known analysis option in psychological research
Binary logistic regression is a well-known and widely used regression technique in psychology and health sciences. This technique allows the introduction of all types of regressors and is very flexible in terms of assumptions; it requires a random sample of n participants evaluated on k predictor variables that show low collinearity and on a dichotomous qualitative variable that is the predicted variable. A practice...
November 2022
African Journal of Environmental Science and Technology
Determination of effective organic baiting technique for harvesting of termites (Macrotermes Bellicosus) for use as alternative protein for poultry
Experiments at Mbaga hills of Siaya County in Kenya were aimed to determine the most effective organic baiting technique for mass harvesting of Macrotermes bellicosus. Around two separate mounds, 5 treatments replicated 3 times, using earthen pot and plastic containers with maize stocks, eucalyptus stems, lantana camara twigs, Napier grass and rice husks, were set up. Termite counts, at 6.00 am and 6.00 pm, and data on...
November 2022
African Journal of Business Management
Professional qualification and its impact on procurement performance: The case of Mzinga Holding Company Limited, Morogoro, Tanzania
Professionalism in public procurement allows for the functionality, transparency and significant savings in public expenditure. Professionalism depends on the staffing, knowledge, skills and capabilities of human resources and system controls that influence human behaviour. This study used descriptive research design. Data were collected from 48 respondents that were purposively selected from different departments of...
November 2022
African Journal of Pharmacy and Pharmacology
Clinical Pharmacy in South Africa: Qualitative investigation of perspectives of practicing pharmacists
The National Department of Health identified the need for Universal Health Coverage, highlighting improved access to quality healthcare in South Africa.Clinical pharmacists play a vital role in various settings, including medication safety, therapeutic drug monitoring and antimicrobial stewardship. Healthcare-related key performance indicators measures quality that ensure accountability, improve patient safety and...
November 2022
Journal of Physiology and Pathophysiology
Toxicological assessment of ethanolic extracts of Annona senegalensis and Trichilia prieureana in the treatment of type 2 diabetes in Benin
The use of medicinal plants in traditional medicine is common practice in developing countries. However, such unregulated and unreasonable use may pose a risk in short or long-term toxicity to humans. The aim of this study was to investigate the phytochemical and toxicological characteristics of Annona senegalensis and Trichilia prieureana two plants from Benin, which are traditionally used for the treatment of colds,...
November 2022
African Journal of Biotechnology
Improved SSRs-based genetic diversity assessment of coconuts (Cocos nucifera L) along the coast of Kenya
Coconut is the most important cash crop along the Coast of Kenya, yet its genetic diversity has not been fully established. Genetic diversity study of 48 coconut genotypes, collected at the Coastal Kenya was conducted with 13 polymorphic short sequence repeats (SSRs) markers. SSR analysis was performed using GeneMapper while data analysis was done with PowerMarker and DARwin softwares. Analysis revealed a total of...
November 2022
African Journal of Biotechnology
Evaluation of Fagara zanthoxyloïdes and Mucuna pruriens extracts phenolic profile and their in vitro antioxidant activity
In this study, the antioxidant activity and phytochemical analysis of extracts from the bark of Fagara zanthoxyloides and seeds of Mucuna pruriens were performed. Phytochemical analysis quantified total polyphenols, flavonoids, tannins and anthocyanins and the antioxidant activity was evaluated by DPPH method. The high levels of polyphenols are obtained from the aqueous extract of F. zanthoxyloïdes (488.6 ±...
November 2022
African Journal of Business Management
Challenges and opportunities for export trade facilitation practices in Ethiopia
This study used quantitative and qualitative methods to examine how Ethiopia facilitates its exports. In this study, descriptive methods and primary data collection were employed. A combination of random and non-random sample methods was applied, including proportional and simple random sampling techniques. Closed-ended questionnaires and semi-structured interviews were used. Data from questionnaires were evaluated...
November 2022
Journal of Music and Dance
Letter #5: Reflexions on perception-action in the creative process of Entre voos e quedas
This article reflects on the artistic research that originated the video-performance Entre voos e quedas. In this research, the interaction between the authors during the creative process is discussed anchored on a perception-action perspective, even when the authors were apart during the COVID-19 pandemics. Also discussed is how our creative approach is anchored in a multi-modal perspective. This is because visual...
November 2022
Journal of Media and Communication Studies
Analysis of newspaper coverage of world cancer day: A study of select newspapers in Nigeria
The rate at which cancer claims the lives of people around the world has been a matter of global concerns. In keeping with the desire to fight cancer and save the world, the United Nations and Union for International Cancer Control (UICC) established world cancer day aimed to unite the global community on the fight against cancer. As a global fight and awareness creation for preventive measures, this study aims to...
November 2022
International Journal of Psychology and Counselling
The metaphysical views on causation among Batswana: implications for case conceptualization, diagnoses, and treatment in counseling
This study focused on how counsellors in Botswana handle belief systems, spiritual, and religious orientations of clients. It explored common beliefs clients up-held about what causes distress. It explored ways in which counsellors addressed clients’ indigenous cultural beliefs and perceptions about the origins of illness, misfortune, and other forms of distress. In-depth interviews were the main data collection...
November 2022
Journal of Horticulture and Forestry
Substrate temperature and seed scarification on germination parameters of butterfly pea (Clitoria ternatea L.)
Recent interest in the cultivation and use of butterfly pea (Clitoria ternatea L.) has increased demand for its commercial production. Successful germination of seed is a critical first step to its production; however, few studies have documented factors influential to germination success. To help support commercial production efforts, the influence of substrate temperature and seed scarification technique on...
November 2022
Journal of Environmental Chemistry and Ecotoxicology
Mercury pollution in Africa: A review
Since the Minamata conference, the scientific and professional worlds (gold industry, metal extraction, health) have come together to conduct research and raise awareness of the effects of mercury (Hg) in the environment, particularly on public health. Africa has not remained on the sidelines of these events, which have a planetary scope due to the long-range transport of various anthropogenic and natural sources of...
November 2022
Journal of Agricultural Extension and Rural Development
Adoption of German International Corporation (GIZ) technology intervention on shea nut processing in Niger State, Nigeria
This study assessed the activities GIZ technology intervention on Shea nut processing in Niger State, Nigeria. The objectives were to identify the available improved shea nut processing technologies and the level of adoption of the improved GIZ shea nut processing technologies in the study area. A two-stage sampling technique was adopted for the study. Data were collected through interview schedule and analysed using...
November 2022
African Journal of Business Management
How and why leaders affect organisations and vice versa: Review of two academic concepts related to Leadership and managing people by drawing on theory and research
The current leadership theories tend to focus generally on the characteristics of leaders and leadership without examining the followers. This article focused on followers, their Implicit Leadership theory (ILT), and the process of granting leadership to the Leader. The paper aimed to explain how leaders influence the ILT of followers and suggests a framework to provide new directions for the development of leadership...
November 2022
International Journal of Physical Sciences
Mineralogical evaluation of clay deposits of Nanka formation in parts of South-eastern Nigeria
Detailed field geology and laboratory studies of the Eocene Nanka Formation were carried out where they outcropped in places like Ogbunike, Umunya, Nanka, Ekwulobia and Ogbu all in Anambra State, South-eastern Nigeria to determine their mineralogical composition. Samples of clay and unconsolidated sands were collected from outcrop locations within the formation and subjected to X-ray diffraction and granulometric...
November 2022
Journal of Medicinal Plants Research
Phytochemical study and anti-radical activity of extracts from the oil seeds of Desbordesia glaucescens (Engl.)Tiegh. from Gabon
The report focused on the extraction of oilseeds of Desbordesia glaucescens (Engl.) Tiegh. from Gabon as well as on the phytochemical study and evaluation of the anti-free radical activity of the extracts obtained. The extraction was carried out by cold maceration with solvents of increasing polarities: hexane, tricholroethylene, acetone, ethanol and distilled water. The anti-free radical activity was measured by...
November 2022
International Journal of Science and Technology Education Research
Ear and eye training: Algorithms for the advanced student of audio, image, and video engineering
A lot of research has been taking place when it comes to audio, image, and video processing. Whereas the algorithms involved are very sophisticated, there is still an issue when they need to be taught to students, mainly because they are difficult to comprehend and they require an experienced trainer to guide the students. This article presents an analysis of two of our algorithms designed for ear and eye training, for...
November 2022
Educational Research and Reviews
The account of teaching qualitative research method in accounting program in Brazil
This study investigates the reflexive relationship between the challenges encountered during the development and teaching of the qualitative research method (QARM) program and the stories of PhD students about their experiences with the course. The study is based on a number of pedagogical issues drawn from postgraduate students combined with an auto-ethnographic account of parallel experiences of teaching qualitative...
November 2022
African Journal of Microbiology Research
Antimicrobial properties of Moringa Stenopetala seed oil
Moringa stenopetala is a multipurpose tree with considerable economic and social potential as it has vital nutritional, industrial, and medicinal applications. The study was aimed to investigate the antimicrobial activities of M. stenopetala seed oil against pathogenic microorganisms. M. Stenopetala seeds were collected from three locations (Damba Gofa, Shelle, and Konso) and extracted using two different solvents...
November 2022
Journal of Pharmacognosy and Phytotherapy
Bioactive evaluation for wound healing of stem back extracts of Acacia nilotica Linn. (Fabaceae)
Acacia nilotica (Linn) is an important medicinal plant, found in Africa, the Middle East, and the Indian subcontinent as well as in Sokoto State, Nigeria. It has been utilized to treat wounds and intestinal disorders among other uses. It has been estimated that nearly 6 million people suffer from chronic wounds worldwide. Even though several conventional drugs are known to increase healing in different kinds of...
November 2022
Journal of Public Health and Epidemiology
Seasonal malaria chemoprevention coverage in Burkina Faso in 2018: Descriptive analysis of mothers' knowledge and attitude during cross sectional survey
Seasonal malaria chemoprevention (SMC) is effective to prevent malaria in children 3 to 59 months in the Sahel region. Mother’s seasonal malaria chemoprevention related knowledge and attitudes and the coverage of the strategy among targeted children were assessed. A cross-sectional survey was conducted in 1828 children aged 3 to 59 months from November 7 to 18, 2018 in eight health regions of Burkina Faso...
November 2022
African Journal of Biotechnology
Antibacterial Activities of selected Medicinal Plants Against Salmonella typhi, Salmonella paratyphi A, B and C, Clinical Isolates in North Central, Nigeria.
The aim of the research was to investigate the antibacterial activities and the phytochemical properties of aqueous and ethanolic extracts of Mango (Mangifera indica) and Neem (Azadirachta indica) leaves, on clinical isolates of Salmonella typhi, Salmonella paratyphi A, B and C, in Lafia, Nigeria. The agar well diffusion technique was used and the analyses were done in triplicates. At the highest aqueous and ethanolic...
November 2022
African Journal of Plant Science
Effect of storage temperature on fruit firmness and weight loss of nine tomato lines
This study aimed to determine effect of three temperature levels on fruit firmness and weight in nine tomato lines in Kenya. Fruit firmness and weight loss were evaluated in a split plot design, temperature levels as main plots and tomato lines as sub-plots at the University of Nairobi, Pilot Seed Processing Plant. Fruits stored at 16°C showed the lowest average decrease in fruit firmness (58.19%) followed by...
November 2022
Educational Research and Reviews
Executive functions, gender, and personality traits in students with and without specific learning disabilities
This study examined the associations between executive functions, gender and personality traits in students with and without specific learning disabilities (SLD). In this study, 80 sixth-grade students were sampled. Of these, 40 were students diagnosed with learning disabilities, 22 boys (55%) and 18 girls (45%) and 40 with no such diagnosis, 23 boys (57%) and 17 girls (43%). All students were tested using two...
October 2022
African Journal of Agricultural Research
Polycentric irrigation water governance: Irrigation water users associations service delivery in Ketar subbasin, Ethiopia
Polycentric irrigation water governance allows community institutions to deliver better irrigation services. This study examined the Irrigation Water User Associations (IWUAs) service delivery performance in the Ketar subbasin, Ethiopia, focusing on four irrigation schemes. The irrigation water user associations in the subbasin were measured on their legal registration and financial status, while the four schemes were...
October 2022
International Journal of Physical Sciences
Solar wind and geomagnetic activity during two antagonist solar cycles: Comparative study between the solar cycles 23 and 24
To better understand the geomagnetic conditions and the particularities of solar cycles 23 and 24, we present analysis from morphological variations of solar and geomagnetic activities parameters IMF-Bz, the interplanetary electric field (E), the proton density (N), Dst (disturbance storm time), Polar cap (PC) indices (PCN and PCS), and geomagnetic activity index aa. The occurrences of the different classes of...
October 2022
African Journal of Agricultural Research
Survey of fungal diseases associated with amaranth (Amaranthus species) in peri-urban vegetable farms in Kumasi and Tamale metropolis of Ghana
Amaranthus species is an important leafy vegetable in Ghana; however, foliar diseases of the crop reduce the marketable and edible portions as well as income to farmers. To facilitate the development of disease management strategy, there is the need to document various diseases limiting amaranth production. In view of this, surveys were carried out in forty-three peri-urban vegetable farms in the Kumasi and Tamale...
October 2022
Journal of Agricultural Extension and Rural Development
Predicting the adoption of multiple climate-smart agriculture technologies in Tambacounda and Kolda, Senegal
Uptake of farming technologies by smallholder farmers is necessary to speed up the transition to climate-smart agriculture so as to address the potential impacts of climate change on agricultural production, food security, and reduction of greenhouse gas emission. Using survey data from 341 households, this study analyzes the factors that determine the probability and level of adoption of multiple climate-smart...
October 2022
Journal of Diabetes and Endocrinology
GSTM1 and T1 null variants effects on the predisposition to type 2 diabetes mellitus in Turabah population, Saudi Arabia
Type 2 diabetes mellitus (T2DM) is characterized by chronic hyperglycemia and associated with an increased production of reactive oxygen species (ROS) affecting beta cells in pancreas. Glutathione S- transferases (GSTs) are a family of antioxidant enzymes that include several classes of GSTs. These enzymes have important roles in decreasing ROS species and act as a kind of antioxidant defense. In a case-control study,...
October 2022
Journal of Toxicology and Environmental Health Sciences
Fish consumption, awareness of fish advisories, and body burden of contaminants among the Milwaukee urban anglers: A biomonitoring study
The Milwaukee Estuary Area of Concern (AOC) has been impacted by toxic pollutants, including polychlorinated biphenyls (PCBs) and heavy metals. During 2017-2019, the Wisconsin Department of Health Services conducted a biomonitoring study with the Agency for Toxic Substances and Disease Registry to examine contaminant exposures among Milwaukee urban anglers who consumed locally sport-caught fish. Questionnaires were...
October 2022
African Journal of Agricultural Research
Spatiotemporal evolution and identification of oil palm phenolic compounds in response to vascular wilt caused by Fusarium oxysporum f.sp. elaeidis in Côte d'Ivoire
Fusarium oxysporum f.sp. elaeidis (Foe) is a fungus that attacks oil palm and affects its production. This study aimed at characterizing phenolic compounds and evaluating their spatiotemporal evolution in two cultivars (sensitive and tolerant to fusariosis). For this, total phenols were quantified during the latency period [0 to 28 Days After Inoculation (DAI)] of Foe. Thereafter, phenolic extracts from plant organs...
Page 9 of 1255, showing 50 records out of 62750 total, starting on record 401, ending on 450
