Articles
Page 10 of 1199, showing 50 records out of 59922 total, starting on record 451, ending on 500
July 2020
International Journal of Educational Administration and Policy Studies
Semiotic procedural knowledge model on solution of problems and problem-solving analysis
This study aims to use problem solving techniques in solving problems at different stages step by step. The theoretical and experimental semiotic model was developed by using the semiotic model method, which can be established with the relation of priority-recency, and an analysis of the problem solving skills of the students was made. Given that the procedural knowledge questions are used as the type of question to be...
July 2020
Journal of Stored Products and Postharvest Research
Oxygen demand of bean bruchids (Acanthoscelides obtectus Say)
The common bean (Phaseolus vulgaris L) is an important crop in many countries and its safe storage is crucial in maintaining a sufficient and high quality food supply for the community. A non-chemical storage technique, hermetic storage, is being used to control the bean bruchid (Acanthoscelides obtectus Say), a beetle which can cause large losses to stored beans. Experiments were carried out using hermetically sealed...
July 2020
Journal of Engineering and Technology Research
Prediction behavior of high frequency modulated by a 16 lengths Golay code undergoing honey attenuation
Optical microscopic analysis of honey is time consuming due to the period needed to prepare samples. Time reduction could be achieved with ultrasound microscopy. This paper investigates the behavior of 125 MHz signal modulated by 16-bits Golay code spread out through a honey sample containing pollen. A bipolar phase shift keying (BPSK) modulation of 125 MHz frequency by 16-bits Golay code was implemented in...
July 2020
African Journal of Biotechnology
Evaluation of poultry waste medium and light quality for lipid accumulation in fresh water green microalgae isolate
The global quest for production of biofuel at a competitive price with fossil fuel has driven research to the exploration of organic waste as a cost-effective growth medium for microalgal biodiesel production. In this study, poultry waste extract (PWE) was explored as growth medium for efficient biomass and some intracellular content accumulation by Chlorella sp. isolate for eight days. The analysis of the poultry waste...
July 2020
Journal of Development and Agricultural Economics
Producers supplying strategic network, value creation and exporting SME growth
Strategic networks of agricultural suppliers for the creation of value added are an interesting field of research in the developing countries. Indeed, various scientific works were interested with social networks as well as on their members’ relationship and on their management. However, social networks as strategic suppliers are able to solve SME’s supply credit problems; the need to analyze networks with a...
July 2020
Educational Research and Reviews
Violence in physical education in a disadvantaged congolese environment: Perceptions of students and teachers
This study identifies and analyzes the different expressions of violence during physical education courses among a school population, and the pedagogical strategies of teachers to reduce violence in Brazzaville, Congo. Based on a survey of students of high schools from disadvantaged environment and teachers, a cross-sectional and analytical survey was carried out from January to April 2019. The activity...
July 2020
Journal of African Studies and Development
Proliferation of churches in Nigeria: Causes, impacts and likely solutions
The study aims to estimate the effect, causes and probable solutions of church proliferation in Nigeria. The study was based on the analysis of fifty structured questionnaires that were distributed among people both in and out of Churches of different denominations using purposive sampling technique method. Statistical descriptive method was used to analyze the information collected from the respondents. The result of...
July 2020
African Journal of Agricultural Research
Evaluation of cowpea rust disease incidence and severity on selected cowpea genotypes in Western Kenya
Cowpea production is common among smallholder subsistence farmers of Western Kenya due to its wide ecological adaptation. However, this crop is affected by cowpea rust Uromyces phaseoli var vignae (Baarel) Arth disease, causing economic yield losses with limited control measures. This study therefore, evaluated cowpea rust disease incidence (DI) and severity (DS) on growth of selected improved cowpea genotypes. A...
July 2020
African Journal of Agricultural Research
Nitrate contamination of groundwater: An issue for livelihood in Jaffna Peninsula, Sri Lanka
Groundwater stored in large cavities and channels of Miocene limestone is the only source of portable water in Jaffna Peninsula, Sri Lanka. It is increasingly exploited and polluted by various contaminants that results in less availability of potable water. Nitrate contamination in drinking water is one of the major concerns which causes severe health impacts, such as methemoglobinemia especially in infants and...
July 2020
Journal of Public Health and Epidemiology
High-accuracy detection of malaria mosquito habitats using drone-based multispectral imagery and Artificial Intelligence (AI) algorithms in an agro-village peri-urban pastureland intervention site (Akonyibedo) in Unyama Sub–County, Gulu District, Northern Uganda
The purpose of this research is to design, deploy and validate artificial intelligence (AI) algorithms operating on drone videos to enable a real time methodology for optimizing predictive mapping unknown, geographic locations (henceforth, geolocation) of potential, seasonal, Anopheles (gambiae, and funestus) larval habitats in an agro-village, epi-entomological, intervention site (Akonyibedo village)...
July 2020
African Journal of Agricultural Research
Determinants of ecosystem-based adaptation to drought in the central cattle corridor of Uganda
Ecosystem-based Adaptation (EbA) is widely recognised as an important strategy for strengthening climate change resilience. Nevertheless, there is limited evidence on the factors that facilitate or impede EbA for ecosystem services, adaptation benefits and livelihood improvement. In this study, the determinants of EbA to drought were assessed. A mixed quantitative and qualitative cross-sectional survey among 183 farmer...
July 2020
African Journal of Agricultural Research
Cracking and breaking response in four rice varieties as influenced by fertilization regime and storage duration
In Northern Ghana, harvesting of the bulk of paddy, which is cultivated under rain-fed conditions, coincides with the harmattan season. This season is characterized by low relative humidity and dry weather conditions which hasten drying and increase the tendency of the paddy to crack during milling. The farmers also store paddy for longer periods in anticipation of higher price in the open market, thus the paddy may...
July 2020
African Journal of Agricultural Research
Effect of growth and yield modelling on forest regulation and earnings
The elaboration of a forest schedule involves constructing and solving a forest regulation model. The regulated structure is not easy to obtain, considering the fluctuations in the effective planting area during the planning horizon, technological advances, and changes in annual demand. Nevertheless, the establishment and implementation of a regulation model often results in an improvement of the forest, in terms of the...
July 2020
African Journal of Microbiology Research
Bridging technique failure through low-tech improvisation: A case study of food microbiology
Modern technology for food safety studies includes standardized protocols and equipment. However, appropriate technology needs to step in to bridge technology dys- or malfunctioning. We examined different low-tech methods for extraction of bacteria from fresh vegetables. Standard equipment including stomacher and filter bags were compared to extraction using bread stick and alternative filter material (nylon stocking,...
July 2020
Journal of Economics and International Finance
Micro-determinants of informal employment in Côte d’Ivoire: The role of socio-demographic factors
This paper proposes to identify the micro-determinants of informal employment in Côte d’Ivoire, focusing on socio-demographic factors. Using data from the National Survey on Employment and the Situation of the Informal Sector (ENSESI) and the Logit method, the empirical results indicate that unschooled and less qualified individuals are more likely to be in an informal situation; that the probability of...
July 2020
Educational Research and Reviews
The relationship between perceived manager support and work commitments of sports instructors
The aim of this study is to investigate the perceived role of supervisor support in predicting the work engagement levels of instructors working in sports venues. Sample of this study consists of a total of 254 instructors, 88 males and 166 females, age ranged 22 to 63, and working in various sports venues. Personal information form, perceived supervisor support and work engagement scale applied to the individuals in...
July 2020
International Journal of Psychology and Counselling
Adolescents’ perception of the impact of condom use on sexual behaviours: Evidence from Ghana, a developing country
Adolescence is a critical stage in human life. Adolescents’ perception of the impact of condom use on sexual behaviour has been studied in developed countries. However, not much is known about this phenomenon in Ghana. The study investigates the perception of adolescents regarding the impact of condom use on sexual behaviours. Simple random and stratified sampling techniques were employed to select the study...
July 2020
International Journal of Educational Administration and Policy Studies
Challenges facing continuing professional development (CPD) of academic staff of the colleges of education in Ghana
Professional development is critical in the life of every organization in positioning workers to meet changing trends of globalization. This study seeks to look at a critical analysis of the challenges facing Continuing Professional Development (CPD) of academic staff of the colleges of education in Ghana. The exploratory, descriptive and evaluative case study approach that combined both qualitative and quantitative...
July 2020
Journal of Horticulture and Forestry
Plant species and their importance to housing in the Turkana community, Kenya
There are many native species that are important to local communities globally. There have been studies on the importance of these plant species for many uses by local communities. Though, there is scanty information on these species’ recognition by researchers. Despite the harsh climatic conditions in Turkana (semi-arid to arid), the community has over the years developed strategies for conservation of some...
July 2020
African Journal of Agricultural Research
Relationship between leaf rolling and some physiological parameters in durum wheat under water stress
Durum wheat is an important staple food in Morocco. Wheat and barley are mostly grown in drought prone areas in this country. Drought is the most limiting factor under Mediterranean climate. Leaf rolling ability has been identified as a potential selection criterion for drought tolerance in cereals. The objective of this study is to test this hypothesis. The role of leaf rolling in water stress tolerance was assessed in...
July 2020
African Journal of Agricultural Research
Assessment of the effects of water stress on seed yield of common bean genotypes
Drought stress is among the most important abiotic factors that contribute to the significant yield reduction of common bean (Phaseolus vulgaris L.). Due to unreliable and poor distribution of rainfall, drought tolerance has become the important train in common bean in bean growing areas. The objective of this study was to evaluate 16 common bean genotypes for drought tolerance under three moisture regimes and identify...
July 2020
African Journal of Pure and Applied Chemistry
Carotenoids identification by HPTLC-MS and vitamin C content of fruits of Saba senegalensis (A. DC) Pichon
Saba senegalensis fruits have gained more attention in recent years due to their antioxidant compounds such as carotenoids, phenolics, vitamin C. This study was designed to identify the main carotenoids from S. senegalensis fruits including phenolics and vitamin C quantifications. Carotenoid profiles from tissues of these fruits have been characterized by High Performance Thin Layer Chromatography- mass spectrometry...
July 2020
African Journal of Biotechnology
Next generation sequencing as a method to verify virus elimination using heat treatment and meristem tip culture in the five most widely used sweet potato varieties in Ethiopia
Sweet potato (Ipomoea batatas L. Lam) has become one of the staple crops in Africa in the last 20 years. In Ethiopia, sweet potato is the second most widely grown root crop and is the first regarding the production per hectare. Thus, there is a great demand of planting material throughout the country. Currently, planting material is usually obtained from own previous season harvest, local markets or from the neighboring...
July 2020
African Journal of Biotechnology
Analysis of genetic diversity in four Sudanese provenances of Balanites aegyptiaca (L.) Del. based on random amplified polymorphic DNA (RAPD) marker
Balanites aegyptiaca (L.) Del. (Heglig) is a multipurpose tree with considerable potential. The wide range of environments under which it is growing suggests high pattern of variation among and within locations. The scrutiny was undertaken to assess genetic diversity among and within four geographical genotypes of Heglig growing naturally in four different regions of Sudan based on their seed performance using random...
July 2020
African Journal of Microbiology Research
Antimicrobial activity of coconut water, oil and palm kernel oils extracted from coconut and palm kernel on some plasmid-mediated multi-drug resistant organisms associated with food spoilage
This study is aimed at evaluating the antibacterial and anticandidal activity of coconut oil, fermented and unfermented coconut water and palm kernel oil (PKO) on Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Corynebacterium sp. and Candida albicans. The coconut water was fermented with Saccharomyces cerevisiae and the pH, sugar and alcohol contents were determined before and after fermentation. The...
July 2020
International Journal of Psychology and Counselling
Stigma and self-efficacy as predictors of intention to seek help among American and Japanese college students
The aim of this study was to examine how people within individualistic and collectivistic cultures differ in their intentions to seek professional mental health help. As such, it was crucial to examine possible predictors of intention to seek help for mental health issues. We explored the cultural differences between American and Japanese students and their intentions to seek help from mental health professionals. A...
July 2020
Educational Research and Reviews
Constructing and measuring of the critical success factors of college students' international mobility: Application of Analytic Hierarchy Process (AHP) method
With the increasing popularity and importance of globalization issues, “global mobility” has become one of the important education policies of Taiwan's higher education. Many universities have actively applied “Shuei-Hai-Fei-Yan” and “Shuei-Hai-Shi-Jhu” programs to follow the trend of globalization and arrange outstanding students to participate in overseas training or internships...
July 2020
Educational Research and Reviews
Variables affecting social-emotional development, academic grit and subjective well-being of fourth-grade primary school students
This study aims to examine the effects of some demographic variables on the social-emotional development, academic grit and subjective well-being of fourth-grade primary school students. The sample of this cross-sectional study consisted of 582 fourth grade primary school students. Data were collected using the Social-Emotional and Character Development Scale, the Academic Grit Scale, and the Subjective Well-Being in...
July 2020
African Journal of Plant Science
Sensor based validation of nitrogen fertilizer for quality protein maize variety using a handheld normalized difference vegetative index sensor at Bako, Western Ethiopia
Regardless of the huge yield potential and area under maize production, its current productivity in Ethiopia is by far below its potential. Declining of soil fertility and poor nutrient management is among the major factors limiting the productivity of the crop. As a result, an experiment was conducted at Bako, Ethiopia in 2016 to validate the N application and determine the best rate for side dressing using handheld...
July 2020
International Journal of Biodiversity and Conservation
Climate variability, biodiversity dynamics and perceptions of local populations in Waza National Park (Far North Region, Cameroon)
Climate variability is one of the major ecological challenges of the 21st century in Waza Logone Plain in the Far North region of Cameroon. The physical environment in this area has almost completly deteriorated as a result of declining rainfall and rising temperatures. A study was carried out to understand the dynamics of biodiversity in terms of climate variability in the Waza National Park. This study was based on...
July 2020
International Journal of Physical Sciences
Simulating ionosphere parameters by thermosphere-ionosphere-electrodynamics general circulation model
Ionosphere region is the part of atmosphere layer where radio waves reflect for telecommunication. This is due to its composition in particles. Solar radiation hit particles in ionosphere. This phenomenon causes an ionization of particles in the ionosphere. According to the particles density in this region, radio waves emitted in telecommunication can pass through this region or be reflected. The ionization of...
July 2020
International Journal of Genetics and Molecular Biology
Impact of glutathione S-transferase genes polymorphisms on human papillomavirus infection and precancerous lesions in West African women
Genetic polymorphisms of certain classes of glutathione S-transferase (GST), enzyme responsible for the biotransformation of drugs and xenobiotics, have been associated with risk of several cancers such as cervical cancer. The aim of this study is to investigate the impact of glutathione S-transferase M1 and T1 deletion on high-risk human papillomavirus (HR-HPV) infections and on dysplasia. A case-control study was...
July 2020
International Journal of Physical Sciences
Application of the alternative variational iteration method to solve delay differential equations
In this paper, alternative variational iteration method (AVIM) is presented to solve linear and nonlinear delay differential equations (DDEs). A general lagrange multiplier is used to construct a correction functional. The proposed series solutions are found to converge to exact solution rapidly. The computation of three test examples of DDEs was presented to confirm the efficacy and validity of AVIM. The results...
July 2020
International Journal of Nutrition and Metabolism
Change in appetite and food craving during menstrual cycle in young students
The change in appetite and food cravings before, during and after menstruation and the relationships between each premenstrual symptom and change in appetite and type of food with increased intake were investigated. This study was conducted by a self-administered questionnaire in 311 female students of health sciences. It was found that the proportion of students who increased the appetite was 70.4% during the...
July 2020
African Journal of Business Management
Using big data in telecommunication companies: A case study
The study was aimed at examining big data management in three telecommunication companies. The case of Big Data management was studied using a qualitative research approach with the primary method of open-ended interview. Websites and documents were examined for developing company profile. Observations augmented data collection from other sources. Companies have widespread operations with substantial stakes. Big Data...
July 2020
African Journal of Environmental Science and Technology
Comparison between real and label content of different bottled water brands from Saudi Arabia and other international countries
For consumers, the water composition is indicated on a label attached to the water bottle. Reports about wrong label information were the motivation for this comparative study of the real content of 20 different bottled water brands from Saudi Arabia and 19 other brands from different countries in Asia, Oceania, Africa, and Europe. The pH, total dissolved salt (TDS) concentration, and concentrations of nine cations and...
July 2020
African Journal of Biotechnology
Stabilisation potentials of the essential oils of Thymus vulgaris L., Cinnamomum zeylanicum B. and Mentha piperita L. on palm olein at accelerated storage
This study aims at bringing to light the preservative potential of essential oils of Thymus vulgaris, Cinnamomum zeylanicum and Mentha piperita in the stabilisation of lipids against oxidation. The essential oils were extracted by hydrodistillation and chemical composition were analysed by gas chromatography coupled with mass spectrometry. In vitro antioxidant potentials of the essential oils were tested by the 2,...
July 2020
African Journal of Biotechnology
Response of catalase to drought in barley (Hordeum vulgare L.) seedlings and its purification
Drought induced oxidative stress triggers anti-oxidative system in cell to minimize oxidative damage where catalase plays vital role to neutralize H2O2. In this work, catalase activity was evaluated to examine the role of catalase in barley (Hordeum vulgare L.) seedlings under drought stress. As compared to control, catalase activity increased with decreasing soil moisture where 219% higher activity were recorded at 10%...
July 2020
African Journal of Biotechnology
Diversity of arbuscular mycorrhizal fungi (AMF) and soils potential infectivity of Vachellia nilotica (L.) P.J.H. Hurter & Mabb. rhizosphere in Senegalese salt-affected soils
Vachellia nilotica, a multipurpose tree useful to rural populations, is often used to rehabilitate Senegalese salt-affected soils due to its salt-tolerance probably related to arbuscular mycorrhizal fungi (AMF) symbiosis. This work aimed to determine the AMF communities associated with V. nilotica rhizosphere in salt-affected soils and their potential infectivity. Soils were sampled from six sites in the...
July 2020
International Journal of Sociology and Anthropology
‘They deceived us’: Narratives of Addis Ababa development-induced displaced peasants
This paper explores the impacts of the fast spatial expansion of Addis Ababa, the capital city of Ethiopia, on the suburb small-scale farming community. Recently, combined with rapid population growth and booming economy, the city experienced a rapid physical expansion without proper urban planning. The sprawl of the city has dislocated small-scale farming communities in the suburbs and led to one of the major deadly...
July 2020
Journal of Economics and International Finance
Macroeconomic effects of improving road transport infrastructure in Ethiopia: A computable general equilibrium model analysis
The main objective of this study is to investigate the economy-wide effect of improving road transport infrastructure. The study uses the updated and adjusted version of the 2005/2006 social accounting matrix of Ethiopia. The study applies a single country computable general equilibrium model. The simulation scenario is a reduction of trade and transport margin and an increase in the total factor productivity (TFP) of...
July 2020
International Journal of Sociology and Anthropology
Queer spirituality of black lesbians in Bloemfontein, South Africa
Research on lesbian women and their sexuality has increased since the adoption of a democratic constitution in South Africa. Yet a large part of the research has focused more on the prevalence of rape on Black lesbians in South African townships, while a substantial amount focused more on the lived experiences of Christian gays. The available body of work above has been taken into consideration and, therefore, this...
July 2020
African Journal of Food Science
Effect of medium-chain triacylglycerols on reactive oxygen species in light irradiation-induced Maillard reaction with glucose-lysine systems
The primary objective of this study was to investigate the involvement of reactive oxygen species (ROS) in the induction of Maillard reaction in the presence of medium-chain triacylglycerols (MCTs). Light irradiation was found to induce Maillard reaction in a glucose-lysine system and led to the generation of ROS. The glucose-lysine Millard reaction was clearly inhibited by the presence of MCTs. Enhancement of this...
July 2020
African Journal of Political Science and International Relations
The United Nations (UN) and human rights: Challenges and prospects
The two World Wars (1914-18, 1939-1945) cannot be forgotten easily. This is because of their uncanny brutality and imponderable consequences which in no small measure demonstrated man’s capacity to destroy himself and decimate the environment. This assertion is predicated on the millions of people who were gruesomely killed, maimed and properties wantonly destroyed. The proliferation of weapons of mass destruction...
July 2020
African Journal of Food Science
Food safety knowledge and practices of street food vendors in selected locations within Kiambu County, Kenya
The safety of street foods remains a public health concern especially in developing countries like Kenya where foodborne illnesses associated with these foods have often been reported. This study determined the food hygiene and safety knowledge and practices of 345 street food vendors (SFVs) in selected locations within Kiambu County, Kenya. Data collection was accomplished through face-to-face interviews using...
July 2020
African Journal of Biochemistry Research
Inhibitory potential and antidiabetic activity of leaf extracts of Vitex doniana
Pancreatic alpha (α)-amylase and intestinal α-glucosidase involved in the enzymatic breakdown of dietary carbohydrates are implicated in postprandial hyperglycemia. The inhibition of these two enzymes has been exploited in the design of antidiabetic drugs. This study was therefore designed to investigate the ability of the leaf extracts of Vitex doniana to inhibit α-amylase and α-glucosidase as...
July 2020
International Journal of Biodiversity and Conservation
Ethnobotanical study of indigenous knowledge on medicinal plant uses and threatening factors around the Malga District, Southern Ethiopia
The study conducted in Malga district in 2019 aimed at documenting indigenous medicinal plants use among the Kebeles community, and the factors threatening local knowledge on medicinal plants before suggesting ways to overcome such threats. A total of 100 informants were selected and snowball sampling techniques were used. Ethnobotanical data were collected using semi-structured interviews, field observations, guided...
July 2020
International Journal of Psychology and Counselling
Psychological distress as a predictor of quality of life among selected Filipino school personnel
This study examined the possible relationship and predictive impact of psychological distress on the quality of life among school personnel. 112 personnel employed in a private school in Caloocan City, Philippines, who participated in the study and completed the Depression Anxiety Stress Scale (DASS 21) and World Health Organization Quality of Life (WHOQOL-BREF) survey. The occurrence of severe to extremely severe level...
July 2020
International Journal of Psychology and Counselling
Reliability Generalization (RG) of the Counseling Center Assessment of Psychological Symptoms (CCAPS)
Due to an increased usage of college counseling centers in the treatment of mental health concerns, it is imperative that centers implement appropriate assessments of psychological symptoms. We examined the Counseling Center Assessment of Psychological Symptoms (CCAPS), which was designed as a routine instrument to assess a range of mental health symptoms. Proper assessment and reporting of reliability are essential...
July 2020
International Journal of Educational Administration and Policy Studies
Ladder of citizen participation: Insights into female student representatives on public university councils in Uganda
Globally, there has been a campaign to promote participation of females in the entire development agenda in general, but specifically in the higher education sector. Public universities in Uganda have attempted to ensure that female stakeholders are given a platform to participate in leadership and governance of their respective universities, though still seemingly scanty. The study therefore explored perceptions of...
Page 10 of 1199, showing 50 records out of 59922 total, starting on record 451, ending on 500
