Articles
Page 1 of 1144, showing 50 records out of 57174 total, starting on record 1, ending on 50
December 2018
African Journal of Food Science
Stability of concentrated extracts of Hibiscus sabdarifa L. calyx during storage at different temperatures
Hibiscus sabdariffa L. (Malvaceae) calyx is a valuable food resource in Africa. This herb is rich in phenolic compounds and a good source of natural antioxidants. Concentrated extract prepared with Hibiscus sabdariffa L. calyx is commonly used in traditional African and Asian diets and medicines. However, the organoleptic properties of these extracts are degraded during storage. Therefore, the stability of these...
December 2018
African Journal of Food Science
Effect of pretreatments on the microbial and sensory quality of weaning food produced from blends of sorghum and soybean
This study investigated the effect of pre-treatment on the microbial and sensory quality of weaning foods produced from blends of sorghum and soybean. Sorghum and soybean were fermented, roasted and fermented/roasted, then milled into flours. Untreated sorghum and soybean flours were also produced separately and serve as the control. A portion of sorghum was malted and milled to obtain malted sorghum flour of which 5%...
December 2018
African Journal of Food Science
Production and functional property of maize-millet based complementary food blended with soybean
Traditional complementary foods are mainly based on cereal grains which when cooked get gelatinized and swollen thereby making the diet viscous and bulky for infants and young children. This study was carried out to investigate the effect of fermentation, germination, and roasting methods on the functional properties of maize-millet-soybean mix with a view to producing less bulky and nutrient dense complementary food....
December 2018
African Journal of Food Science
Freeze and spray drying of Scaptotrigona bipunctata (Lepeletier, 1836) pollen - development and physicochemical characterization
This study was carried out to evaluate human consumption of the pollen of Scaptotrigona bipunctata colonies stored in pots; it was lyophilized and spray-dried in arrays of arabic gum and hydrolyzed collagen which have been widely applied to get products with best technological features and highest biological activity. After the samples were prepared they were evaluated by physicochemical analysis, and the data...
December 2018
African Journal of Food Science
Enhancement of eritadenine production using three carbon sources, immobilization and surfactants in submerged culture with shiitake mushroom (Lentinula edodes) (Berk.) Singer)
In this study, the effect of three carbon sources (mannitol, minced potato and sucrose), two immobilization substrates (alginate and wood cylinders), and three surfactants (Tween 20, Tween 40 and Tween 80), were evaluated on eritadenine production using shiitake (Lentinula edodes) mycelium under submerged cultivation, in shake flasks within 20 days. Eritadenine and biomass were measured by HPLC and gravimetrically,...
December 2018
International Journal of Livestock Production
Effect of cowpea (Vigna unguiculata) grain on growth performance of Cobb 500 broiler chickens
A total of 300 day old Cobb and 500 broiler chicks distributed randomly to 20 pens with 15 chicks each were allocated to 5 different dietary treatments with 4 replicates per treatment in order to evaluate the growth performances of Cobb 500 broiler chickens. A complete randomized design (CRD) was used. Cowpea inclusion levels were 0% (T1), 5% (T2), 10% (T3), 15% (T4) and 20% (T5). A partial budget analysis was done for...
December 2018
International Journal of Livestock Production
Farmers’ perception on sheep production constraints in the communal grazing areas of the Eastern Cape Province, South Africa
The study was conducted to identify farmers’ perception and ranking of the most important constraints to sheep production at Sinqumeni administrative area, in Ngcobo local municipality of the Eastern Cape Province, South Africa. Data was collected using semi-structured questionnaire. The results showed that 72.6% of the surveyed farmers were males and 62.5% of the farmers were between the ages of 52-80 years. The...
December 2018
Journal of Geography and Regional Planning
Urban road and on-street parking in Niger Delta Region of Yenagoa, Bayelsa State, Nigeria
This study is a survey of urban roads and on-street parking in Niger Delta Region- Yenagoa, Bayelsa State. The study generated data with the aid of physical measurements, traffic and volumetric counts. Descriptive and inferential statistical tools were utilized for the data analysis. The results showed that road widths were narrow and could not accommodate on-street parking. Tested hypotheses confirmed that the width of...
December 2018
Journal of Geography and Regional Planning
Environmental sanitation practices in Kuchigworo and Garamajiji along airport road, Abuja
Good environmental sanitation is a precondition for good health and success in the fight against poverty, hunger and death. It is also central to the human rights and personal dignity of every human being. The study adopted direct field observation, it involved interview and physical assessment. Results were presented in tables and charts, while data analyses were carried using simple percentages and frequencies. The...
December 2018
Journal of Geography and Regional Planning
An assessment of youths’ perception and participation on environmental management undertakings: Empirical evidence from Youth Development and Change Package implementation in Southern
Ethiopia (SNNPRS)
The participation of youths is important in the management of environmental problems. Environmental problems such as deforestation, overgrazing, soil erosion, and improper waste disposal are common in most parts of Ethiopia. Inappropriate environmental policies, population growth, climate change, and low level of awareness and less participation of the public are the major factors responsible for the problems. These...
December 2018
Journal of Plant Breeding and Crop Science
GGE biplot phenotypic stability analysis of soybean [Glycine max (L.) Merril] genotypes
The study on genotypes by environment interaction (GEI) and stability analysis was conducted to determine the G, E, and GEI variance magnitudes. The experiment was carried out at three locations in two consecutive years on 26 soybean genotypes using randomized complete block design (RCBD) design with three replications. The objectives were to (i) estimate the magnitudes of G, E, and GEI effects, (ii) stability analysis...
December 2018
Journal of Plant Breeding and Crop Science
Influence of environment on soybean [Glycine max (L.) Merr.] resistance to groundnut leaf miner, Aproaerema modicella (Deventer) in Uganda
Groundnut leaf miner (GLM) [Aproaerema modicella (Deventer)] is a serious problem for soybean cultivation in Uganda causing yield losses of up to 100%. The use of soybean [Glycine max (L.) Merr.] cultivars resistant to GLM attack is an important strategy in the integrated pest management program. The aim of this study was to determine the environment × genotype interaction influence on the soybean resistance...
December 2018
Journal of Media and Communication Studies
The changing nature of “News Reporting, Story Development and Editing”
With advancements in technology in this age of globalization and digital media, the nature of News Reporting, Story Development and Editing across the United States have been constantly evolving. Through a systematic secondary research, the current research would examine various factors which led to the evolutionary journey of News Reporting, when there was simply a man behind a desk delivering news to the age of...
December 2018
Journal of Media and Communication Studies
Does mobile technology increase the diversity of news? A content analysis of news notifications on mobile phones
Through conducting a content analysis of news notifications on the mobile media platform, the current study mainly finds that 1) no agenda correlation exists among legacy media outlets; 2) an agenda correlation is found between non-legacy media outlets and legacy media outlets; 3) in terms of news pushing frequencies, non-legacy media outlets, and legacy media outlets share different news pushing patterns on the mobile...
December 2018
African Journal of Environmental Science and Technology
Study of the reactivity of Casamance vegetable and agricultural waste char gasification with steam and CO2
The increasing energy demand coupled with the need to reduce greenhouse gas emissions and the threat of exhaustion of oil reserves make us consider a possible recourse to the use of biomass waste as a source of renewable energy. Nowadays, gasification is not yet economically and operationally attractive for the power industry and more research is needed to facilitate the process and improve the desirability of the...
December 2018
African Journal of Environmental Science and Technology
Valorization of water resources in Senegal for economic, social and sustainable development
Senegal has a rich and diversified hydrological potential. The bulk of surface water reserves are located in the basin's rivers Senegal and Gambia, whose waters originate from the Fouta Djallon massif. Alongside these large rivers, there are smaller rivers (Casamance and Kayanga) and small watersheds with temporary flows. Groundwater resources are also an important part of Senegal's...
December 2018
African Journal of Environmental Science and Technology
Comparative experimental study of performance degradation of amorphous silicon and crystalline silicon in outdoor exposed in Cologne
The photovoltaic (PV) lifetime and the return-on-investment for local PV system installation rely on long-term device performance. Understanding the efficient degradation behavior under a given set of environmental conditions is, therefore, a primary goal for experimental research and economic analysis. The modules were characterized with measurement of their I-V features under similar outdoor condition. Moreover,...
December 2018
African Journal of Environmental Science and Technology
Modeling ensemble streamflow: Application to the Senegal River upper the Manantali Dam
This study presents an ensemble stream flow simulation with probability of occurrence accounting for errors of the GR4J turned to the Senegal River upper the Manantali dam. Through this approach, probability is associated to simulation at each time, with step and reliability of issues depending on probability scores. Results including the reliability of the results permit decision-makers to judge the reliability of...
December 2018
African Journal of Environmental Science and Technology
Physicochemical and mechanical properties of biomass coal briquettes produced by artisanal method
In this study, carbonized peanut shells, cashew shells and millet stalks were used as raw materials to produce coal briquettes. Clay and arabic gum were applied as binders during briquetting by use of manual press. Physicochemical and mechanical tests of the obtained briquettes were conducted. The results show that the lower heating values of coal briquettes remain higher to that of wood; however, their ash contents are...
December 2018
African Journal of Environmental Science and Technology
A numerical modeling study of the Southern Senegal upwelling shelf: Circulation and upwelling source waters
The regional ocean circulation along the Southern Senegal shelf is studied using a numerical model for varying forcing fields during the upwelling season (November-May). The main objective is to study the shelf circulation of the marine environment in the Southern Senegal Upwelling Shelf (SSUS), the Lagrangian pathways by which waters are transported to the surface in the upwelling tongue and the fate of these waters....
December 2018
African Journal of Environmental Science and Technology
Assessment of satellite rainfall products for stream flow simulation in Gambia watershed
Satellite rainfall estimates (SRE) with high spatial and temporal resolution and large areal coverage provide a potential alternative source to force hydrological models within regions where ground-based measurements are not readily available. The Gambia Basin in West Africa provides a good example of a case where the use of satellite precipitation estimates could be beneficial. This study aims to compare three SRE over...
December 2018
African Journal of Environmental Science and Technology
Variability and predictability of bush fire in Guinea on inter-annual and multi-year timescales based on NDVI-MODIS datasets analysis
This study investigates the variability and the predictability of bush fire on inter-annual and multi-year timescales in Guinea (latitudes 7° 05 and 12° 51 N and longitudes 7° 30 and 15° 10 W). Using Moderate Resolution Imaging Spectroradiometer (MODIS) with a spatial resolution of 231 m × 231 m and 16 days composite temporal resolution between 2001 and 2016, two brush fire hazard indices are...
December 2018
African Journal of Political Science and International Relations
Corruption and fiscal federalism in Nigeria: Analysis of the federal budgetary process, 1999 – 2016
Corruption is perhaps the biggest challenge to Nigeria’s development and the integrity of the country’s fiscal monetary system. Since independence in 1960, corruption has been a destabilizing factor in the country’s progress. It however gained pronounced ascendancy during the Second Republic, forcing a greater percentage of the country’s population into serious economic hardship leading to the...
December 2018
African Journal of Political Science and International Relations
The ‘Significance of Elections’ in Africa: 2015 elections and democratic consolidation in Nigeria
While it can be argued that elections are not enough for the consolidation of democracy, elections are fast emerging as a significant component of democratization. Not least, because their regularity has enhanced freedom and liberalization, but also because they have been the cause and/or effect of democratic consolidation. As a key component of democracy, elections have become the barometer and template upon...
December 2018
Journal of Development and Agricultural Economics
Evaluating the impact of small-scale irrigation practice on household income in Abay Chomen District of Oromia National Regional State, Ethiopia
Being the backbone of the Ethiopian economy, agricultural practice has been traditionally dominated for centuries by small-scale farmers. Even though small-scale irrigation is practiced in the study area, its impact on household income is not analyzed systematically for further policy action. This study was conducted to evaluate the impact of participation in small-scale irrigation on household income in Abay Chomen...
December 2018
African Journal of Plant Science
Review on effect of population density and tuber size on yield components and yield of potato (Solanum tuberosum L.)
Population density and seed tuber is an important agronomic management practices in the production of potato (Solanum tuberosum L.). However, potato farmers in Ethiopia often use random population density and tuber sizes, which contribute to the low yield of the crop. Thus the objective of this study is to review effect of population density and tuber size on yield components and yield of potato. The result of this...
December 2018
African Journal of Plant Science
Effect of genotype and environment on grain quality of sorghum (Sorghum bicolor L. Moench) lines evaluated in Kenya
Grain sorghum (Sorghum bicolor) has a great potential for use as food and beverage in developing countries. However, information regarding the effect of the agro-ecological environments on the grain quality attributes of selected sorghum lines desirable for malting and brewing and for baking in Kenya, is lacking. The experiments of this study were conducted at different environmental locations in Kisumu, Siaya and Busia...
December 2018
African Journal of Plant Science
Nitrogen release dynamics of Erythrina abyssinica and Erythrina brucei litters as influenced by their biochemical composition
Litter mineralization is a crucial process in providing nutrients through decomposition to plants, which also depends in the biochemical composition of the litter and soil properties as well. Decomposition rate of Erythrina abyssinica and Erythrina brucei in Luvisol was investigated in relation to their nutrient release dynamics such as NH4+-N and NO3--N in relation to their initial concentrations of lignin, acid...
December 2018
Journal of Development and Agricultural Economics
Factors affecting performance of youth and women’s agricultural cooperatives: A case of some selected cooperative societies in Eastern Cape, South Africa
Rural youth and women are the major victims of poverty caused by deprivation. As a group, they lack access to land, financial capital and participation in decision processes in the family and community levels. One way of overcoming this challenge is through the formation of cooperative societies. As cooperative societies are saddled with the responsibility of providing needs to their members and enhance the quality of...
December 2018
African Journal of Plant Science
Effects of waterlogging on growth, biomass and antioxidant enzymes on upper ground and roots of two peony cultivars
Tree peony (Paeonia suffruticosa Andr.) is a perennial deciduous shrub with ornamental and medicinal value. Waterlogging stress is an agricultural problem for peony in Jiangnan of China. This study investigated the growth, biomass, cell membrane permeability and antioxidant enzymes of two P. suffruticosa cultivars ‘Feng Dan Bai (FDB)’ and ‘MingXing (MX)’. The response of roots and upper ground to...
December 2018
Journal of Development and Agricultural Economics
Determinants of food insecurity among rural households of South Western Ethiopia
This study seeks to determine households’ determinants of food insecurity among rural households in Woliso district, South Western Ethiopia. The main objective of this study is to identify factors influencing food insecurity in the study area. The study used household-level survey data collected from 122 sample households in Woliso district, and systematic random sampling technique was employed to select the...
December 2018
African Journal of Plant Science
Effect of Electrocultre on seed germination and growth of Raphanus sativus (L)
Experiments were carried out to study the effect of electricity on the seed germination and growth of the Raphanus sativus. For the experiment, twelve pots were grouped into four sets, each containing three pots. In each pot, 20 seeds were sowed. While keeping all the parameters constant 3V, 6V and 9V electricity was supplied for 10 min daily to three groups only, while one set of three pots were not supplied with the...
December 2018
Journal of Plant Breeding and Crop Science
Curauá genetic diversity in germplasm banks and natural populations
Ananas comosus var. erectifolius (L. B. Sm.) Coppens & F. Leal, populary known as curauá, is a bromeliaceae, found in the Amazonian flora. It is of great commercial interest, mostly for the automobile industry. Despite the curauá’s potential, little has been done to conserve its germplasm. For this, it’s necessary to know its genetic variability. An efficient way of knowing it is to use...
December 2018
African Journal of Business Management
Factors influencing project selection in the renewable energy sector of Zambia
The purpose of this paper is to investigate the factors that influence decision making in the selection of projects in renewable energy sector of Zambia. Project selection and development of a portfolio of projects in line with corporate strategy is an important task of decision makers in the renewable energy sector of both public and private organizations. The selected projects have to meet the appropriate time frame...
December 2018
African Journal of Business Management
Factorizing towards the prime determinants of job satisfaction: An integrative modeling across PCA and logistic regression
In recent years, job satisfaction has been seriously taken as one of the top priority concerns in developing countries, since the living standards of the people have been improving. The overarching aim of this study is to identify the top most determinants of job satisfaction among employees of Abay bank using a sample of 150 employees working in Addis Ababa. A combination of principal component analysis (PCA) and OLR...
December 2018
African Journal of Business Management
Corporate social responsibility: An approach to peace?
The responsibility to promote sustainable development should be a joint effort among government, industry and other organizations. They can share the responsibilities and commitments that countries have with regard to the ratification of the global plans of action, such as Agenda 21, Kyoto Protocol and Agenda 2030. Delai and Takahashi (2012) explain that the Corporate Social Responsibility (CSR) is the approach to...
December 2018
African Journal of Biotechnology
Marker-assisted pyramiding of Xa21 and Xa7 genes conferring resistance to bacterial leaf blight in indica cultivar Bacthom7
Bacterial leaf blight (BLB) of rice is one of the most destructive diseases affecting rice fields. Xanthomonas oryzae pv. oryzae (Xoo) is the causal agent of BLB. Two BLB resistance genes, Xa21 and Xa7, were transferred into the susceptible indica cultivar Bacthom7 (BT7) by using marker-assisted selection with markers pTA248 for Xa21 and ID7 for Xa7. Improved BT7 lines carrying the two resistance genes were inoculated...
December 2018
African Journal of Biotechnology
Superoxide dismutase activity and jasmonic acid during in vitro-ex vitro transition of pineapple (Ananas comosus (L.) Merr.) micropropagated plantlets
Recent agriculture is characterized by intensive and cleaning productions, which need seeds with high quality in large quantities bonded by in vitro culture labs. Nevertheless, in vitro ex vitro transition and during acclimatization losses occur due to the death of plantlets unable to survive this abiotic stress. Reactive oxygen species production during jasmonic acid-induced changes of previous transition was...
December 2018
Journal of Medicinal Plants Research
Ethnobotanical study of indigenous knowledge on medicinal plants used to treat diseases in selected districts of Amhara Regional State, Ethiopia
This study was conducted in four districts of Amhara Region, Ethiopia. The aim of the study was to assess medicinal plants found in Menz gera, Siyadebirna Wayu, Antsokiya gemza and Bugna districts, Amhara region, Ethiopia. The ethnobotanical surveys were carried out from September 2017 to June 2018 using a semi-structured checklist consisting of questions or issues prepared in advance. Two separate questionnaires were...
December 2018
Journal of Medicinal Plants Research
Augmentation of docetaxel-induced tumor suppression in human ovarian cancer using selenium-enriched polysaccharides from Pyracantha fortuneana (Se-PFPs)
Pyracantha fortuneana (Maxim.) contains many healthy ingredients, including selenium-enriched polysaccharides. Selenium-enriched polysaccharides from P. fortuneana (Se-PFPs) have anti-mutation and anti-oxidation activities, along with anti-tumor activity in ovarian cancer and breast cancer cells. Docetaxel (DTX) is widely applied in therapeutic treatment for ovarian cancer. However, its use in clinics is restricted due...
December 2018
Journal of Medicinal Plants Research
Comparative analysis of capsaicin in twenty nine varieties of unexplored Capsicum and its antimicrobial activity against bacterial and fungal pathogens
In this study, the capsaicin content of chile pepper extracts from 29 unexplored varieties of Capsicum (twenty five varieties of Capsicum chinense and five of Capsicum annuum) was quantified and correlated with the antimicrobial potential against bacterial and fungal pathogens. The capsaicin content and bactericidal activity against numerous human pathogens (Salmonella, Escherichia coli O157:H7, Listeria monocytogenes,...
December 2018
Journal of Medicinal Plants Research
Hepato-protective potentials of Sterculia setigera stem-bark extract on acetominophen induced hepato toxicity in Wistar albino rats
The study was set to investigate the potency of stem bark extract of Sterculia setigera as a hepato-protective agent against acute administration (overdose) of acetaminophen in experimental animals. Experimental animals were grouped into six treatments with each group containing five rats. Group 1 was the placebo, Group II was the standard treatment orally administered acetaminophen at a dosage of 250 mg/kgbw and...
December 2018
Journal of Medicinal Plants Research
Phytochemical analysis, antioxidant, antibacterial and combinational effects of medicinal plants used by Bapedi traditional healers to prepare herbal mixtures
The aim of this study is to evaluate the biological activities of some plant species used in the preparation of herbal mixtures and determine the combinational effects. The plant materials were collected from traders who use them to prepare herbal mixtures claimed to be blood purifiers, pain-relievers, anti-diarrheal and aphrodisiac medicines. An aqueous decoction of each plant species was prepared. Thin layer...
December 2018
Educational Research and Reviews
Applicability of the learning organisation idea to universities in Kenya
The concept of the learning organisation is now gaining more prominence globally, yet there are few organisations that assert to be learning organizations, or identify with organizational learning. On the same breath, the learning organisation concept and practice is voiced more in the developed nations than in the developing ones, more so, Africa. Further, the learning organization appears to be more practical in...
December 2018
Educational Research and Reviews
Reflection in language teaching: A comparison between preservice and experienced teachers of English
Teachers’ ability to reflect on their performances or reflective teaching has been commonly used and accepted in the educational contexts. However, it has not become a content item or a course in educational curricula so far. For this reason, reflective abilities of teachers or preservice teachers cannot be measured, and there is limited feedback on their reflective performances in the teaching and learning...
December 2018
African Journal of Microbiology Research
Diversity and Symbiotic Effectiveness of Rhizobium Isolates Collected from Different Faba bean (Vicia faba) Growing Areas of North and South Gondar, Ethiopia
Fifty seven Rhizobium isolates were retrieved based on infection method from different faba bean growing areas of North and South Gondar, Ethiopia. In sand culture, only 35.5% of isolates showed nodulation. Analyses of variance indicated that inoculation of isolates improved tested traits significantly (p< 0.05) at all measured investigated parameters such as shoot length, shoot dry weight, and plant total nitrogen...
December 2018
African Journal of Microbiology Research
Agronomic performance of soybean treated with Bacillus amyloliquefaciens
The development of practices that maintain or increases soybean yield can increase the profitability of this crop. In this context, the use of microorganism-based products in crops has been extensively studied. Among the species, Bacillus amyloliquefaciens has shown significant potential for agronomic use due to its ability to control phytoparasitic microorganisms and its effects in promoting plant growth. The aim of...
December 2018
African Journal of Microbiology Research
Seroprevalence of Chikungunya during outbreak in Dhaka, Bangladesh in 2017
Chikungunya (CHIK) infection is re-emergence public health problem globally including Bangladesh. It is an arthropod-borne disease, which is transmitted by mosquitoes bite. The virus was first isolated in Newala district of Tanzania in 1953. In 2017, an outbreak of Chikungunya, has struck Bangladesh’s capital, Dhaka. This study was conducted to know the seroprevalence, clinical presentations and seasonal trends of...
December 2018
African Journal of Biotechnology
Preliminary study on rice straw degradation using microbial inoculant under shake flask condition
Abundance and unmanaged agriculture residues lead to unutilized resource waste and environmental pollution. Application of microbial technology to manage agriculture waste could produce value-added product. A preliminary study on biodegradation of rice straw using different potential microorganisms was tested under controlled environment. Three different inoculant cultures were used to observe their efficiency in rice...
December 2018
African Journal of Biotechnology
DNA extraction from silica gel-preserved common bean (Phaseolus vulgaris L.) leaves
Extraction of non-degraded and contaminant-free DNA from field specimen requires collection under liquid nitrogen which is not readily available in resource constrained laboratories in low and middle income countries (LMICs). A method of extracting DNA from silica gel-preserved common bean (Proteus vulgaris L.) leaves is presented. The method, which does not involve the use of phenol, chloroform or isoamyl alcohol also...
Page 1 of 1144, showing 50 records out of 57174 total, starting on record 1, ending on 50
