Articles
Page 1 of 1174, showing 50 records out of 58657 total, starting on record 1, ending on 50
December 2019
African Journal of Environmental Science and Technology
Characterization of the development and productivity of Jatropha curcas L. plants according to provenance and tillage in Bargny, Senegal
Among the crops that can potentially be used to provide the raw material needed for liquid biofuel production Jatropha curcas L. is the one that generates most interest in many development projects. The aim of this study is to evaluate the production and development of 3-year-old J. curcas L. seedlings in 2012. The results showed that after three years of planting, subsoiling and provenance have no effect on growth...
December 2019
African Journal of Environmental Science and Technology
Spatial patterns of climatic variability and water budget over Sudan Savannah Region of Nigeria
The study examined the effect of climatic variability on climatic water balance over Sudan Savannah, Nigeria. Temperature and Rainfall data were collected for the period 1943-2012 from the Nigerian Meteorological Agency. The data were divided into two climatic years 1943-1977 and 1978-2012. On the whole, rainfall amount decreased from a very high mean value of 981.5 mm in Yelwa (Lat. 10.88 N; Long. 4.75 E) to a very low...
December 2019
African Journal of Environmental Science and Technology
Future evolution of surface temperature extremes and the potential impacts on the human health in Senegal
Climate change impacts negatively vulnerable regions such as West African countries like Senegal, through an increase of climate extremes. The objectives of this study is to analyze the future evolution of the extreme temperature events and their impacts on human health in Senegal during the cold (DJF), hot (MAM) and wet seasons (JAS) under the greenhouse gas scenarios RCP4.5 and RCP8.5 using Climate projections of five...
December, 2019
Journal of Medicinal Plants Research
Recent advances in analytical approaches for the standardization and quality of polyphenols of propolis
Analytical approaches utilized for the characterization of polyphenols from propolis useful for the determination of its quality is investigated in this study. A qualitative and quantitative evaluation of propolis bioactive molecules is of interest in medicine and nutraceuticals. Recent powerful analytical techniques are of great utility to separate and quantify polyphenols in extracts and finished products due to their...
December, 2019
Journal of Medicinal Plants Research
In vitro and in vivo antimalarial activity of Nigella sativa L. extracts
The Arabs, Asians and, Traditional Health Practitioners in Mombasa county found in Kenya have been using Nigella sativa L. seeds to traditionally manage malaria associated symptoms that is, headache, fever, chills, loss of appetite among others. The present study investigated in vitro antiplasmodial, in vivo antimalarial activities and safety of different extracts of N. sativa. Five extracts obtained via aqueous...
December, 2019
Journal of Medicinal Plants Research
Preliminary study to identify anti-sickle cell plants in Niger's traditional pharmacopoeia and their phytochemicals
The management of sickle cell disease is a major challenge at the international level. In many African countries, sickle cell anemia is one of the major causes of mortality and is a critical public health problem in Niger. In this part of the continent, the estimated prevalence is around 18 to 22%, which is amongst the highest in Africa. Nowadays, despite the existence of some ways to improve the prognosis of sickle...
December 2019
Journal of Agricultural Extension and Rural Development
Economic valuation of Nile Tilapia (Oreochromis niloticus) in Lake Hawassa, Southern Ethiopia
The purpose of this study is to investigate the economic value of fish (Nile Tilapia) in Lake Hawassa and determine the factors affecting the households’ willingness to pay for a quality improved fish product. The survey was conducted through face-to-face interview of 467 households consuming fish caught from the lake. The respondents were aware on the poor quality of the fish due to domestic and industrial...
December 2019
Journal of Agricultural Extension and Rural Development
Factors determining crop farmers’ willingness to pay for agricultural extension services in Tanzania: A case of Mpwapwa and Mvomero Districts
This study assessed crop farmers’ willingness to pay for AESs and identified factors influencing their willingness to pay for AESs. Data were collected from 292 randomly selected crop farmers’ households between December 2017 and February 2018 using a questionnaire through face-to-face interviews. Data were analyzed using frequency counts, percentages and Tobit regression model. The study found that 92% of...
December 2019
Educational Research and Reviews
A study on the effects of self-regulation skills education program on self-regulation skills of
six-year-old children
This study was conducted to investigate the effect of a Self-Regulation Skills Education Program on self-regulation skills of six-year-old children. The nonequivalent control group was used in the study. The study group consists of 40 children. “General Information Form” and “Preschool Self-Regulation Assessment (PSRA)”were used as data collection tools. It was determined as a result of the study...
December 2019
African Journal of Environmental Science and Technology
Assessment of hydrological pathway and water quality of the songor wetland, Ghana
Wetlands regulate sediment accumulation, minimize pollution load and act as a buffer against coastal erosion. However, the overflow of seawaters into closed lagoons and wetlands could cause an excessive build-up of solutes through evaporation and could threaten the health of the aquatic life. This study examined hydrological regime, water quality and spatial distribution of flora within the Songor Wetland, Ghana using...
December 2019
Educational Research and Reviews
Teachers’ pedagogical competence as determinants of students’ attitude towards basic science in South
West Nigeria
This study investigated teachers’ pedagogical competence as determinant of students’ attitude towards Basic Science in South-West Nigeria. The study was a descriptive survey type study. Participants were 2160 students randomly selected from 108 secondary schools across four States in South- west Nigeria together. 324 teachers teaching Basic Science in Junior Secondary Schools were purposively selected for...
December 2019
African Journal of Environmental Science and Technology
Active and passive air quality bio-monitoring in the tropics: Intra-urban and seasonal variation in atmospheric particles estimated by leaf saturated isothermal remanent magnetisation of Ficus benjamina L (Moraceae)
Atmospheric pollutant emissions are likely to increase continously in developing cities like Abidjan (Ivory Coast) where air quality strategies are ineffective or not yet implemented. This could result in a big risk to human health. Local meteorological parameters can have both positive or negative effect on habitat quality depending on the biomonitoring approach used. This study investigates the sources and factors...
December, 2019
African Journal of Cellular Pathology
Assessment of the effect of post-natal lead exposure on the hippocampus of developing Wistar rats
This study examined the effect of post-natal lead exposure on the hippocampus of developing Wistar rats. Nine pregnant Wistar rats were randomly distributed into three groups of three rats each, consisting of a control Group 1 which received distilled water and experimental Groups 2 and 3 orally administered with 60 and 90 mg/kg bwt of lead acetate, respectively. The pups of the experimental Groups 2 and 3 were exposed...
October-December 2019
International Journal of Nursing and Midwifery
Women’s perception of male involvement during pregnancy and labour in University College
Hospital, Ibadan
In Nigeria, male involvement practice is almost a mirage in term of labour and delivery support among women. In spite, of it help at reducing complications. The aim of the study is to assess perception of different tribes towards male involvement during pregnancy and labour, the educated, non educated, employed, unemployed and perceived barriers respectively. A descriptive cross-sectional research design was employed....
December 2019
Journal of Dryland Agriculture
Yield variability of Irish potato (Solanum tuberosum L.) as affected by cultivars and sowing date in the Sudan Savanna Zone of Nigeria
Field experiments were conducted in the Sudan Savannah Zone of Nigeria during the 2015/2016 dry season. The Research Farm of Audu Bako Collage of Agriculture, Danbatta (12° 44′ N and 8° 51′ E) and Federal College of Education Technical, Bichi (12°24′N and 8.24′E) represented the two locations. Subjects of interest were to determine the effect of variety and sowing date on yield of...
December 2019
Journal of Agricultural Extension and Rural Development
Assessment on rural poultry production and marketing system of Horro chicken ecotypes in Western Ethiopia
A cross-sectional study was conducted to assess production and marketing system of Horro chicken ecotypes, and to determine poultry health and marketing constraints across different agro-ecologies of western Ethiopia. A total of 360 householders were interviewed for the survey in Horro area (western Ethiopia) where the Horro chicken ecotypes are mainly found; the sample size was determined using proportionate sampling...
October-December 2019
Journal of Public Health and Epidemiology
Unmatchability of mobile phone and handlebar: Predictors among professional motorcyclists at Cotonou (Benin)
In Benin, professional motorcyclists represent a consistent part of transport services, particularly in the city of Cotonou. However, this activity remains poorly regulated, which contributes to the development of risky behaviors. Among these latter, there is not enough evidence about the use of mobile phones while driving. The study aims to estimate the prevalence of mobile phone use while driving and to identify the...
July-December 2019
African Journal of Bacteriology Research
Genetic diversity and resistance profile of mycobacterial strains isolated in Senegal
Tuberculosis remains a major public health problem in Senegal. The aim of this study was to determine the resistance and molecular profiles of mycobacterial strains isolated over a four-year period in Senegal. Mycobacterial isolates worked on were obtained at the National Reference Laboratory of the National Antituberculosis Program (NAP) in Senegal. These strains were cultured on Lowenstein-Jensen (LJ) medium or on LJ...
December 2019
African Journal of Biotechnology
Effect of ethanolic leaf extract of Vinca major L. on biochemical parameters and glucose level of alloxan induced diabetic rats
In view of World Health Organization (WHO) recommendation on the use of medicinal plants for the management of diabetes mellitus, this study evaluated the effect of ethanolic leaf extract of Vinca major L. on biochemical parameters and glucose level of alloxan induced diabetic rats as objective. Sixty-four male Wistar albino rats were induced with diabetes by a single intraperitoneal injection and were separated into...
December 2019
African Journal of Microbiology Research
Assessment of bacteriological quality of water sources from an agrarian settlement in South-East Nigeria
This study assessed the bacteriological quality of groundwater, rainwater and surface water sourced from an agrarian settlement in South-eastern Nigeria. Agamede, Amede, Ihenyi, Mgbuji and Umuhu communities in Eha-Amufu served as sampling locations. Samples were sourced from River Ebenyi, hand-dug wells and rooftop harvested rainwater. Bacterial isolation, identification and enumeration followed standard methods....
July-December 2019
Journal of Environmental Chemistry and Ecotoxicology
The impact of household and similar solid wastes on Kara River quality due to their potential to release nitrogen
This study purpose to assess the real share of nitrogen the household and similar solid wastes can release in direct contact with water. The maximum amount of nitrogen could release was determined by a leaching test. The concentrations of total and organic nitrogen, ammonium and nitrates ions and the pH values were measured in the initial and incubated juices. The leaching test showed that the solid waste can release...
July-December 2019
Journal of Geology and Mining Research
Structure and tectonics of Hong Hills in Hawal Precambrian Basement Complex, North East Nigeria
The tectonics and impact of the Pan-African orogeny on the Hong Hills area of North Eastern Nigeria has been unraveled. This work basically used structural identification and tectonic inference to decipher the deformation episodes in this region. The results show that this area was subjected to multiple episodes of deformation and there were evidence of reworking of older structures by younger ones. Foliation, folds and...
December 2019
Educational Research and Reviews
The influence of age and gender on class attendance plus the academic achievement of undergraduate Chemistry Education students at University of Calabar
This article investigated the influence of age and gender on class attendance as well as Chemistry Education students’ academic achievement in SED 281, at the University of Calabar. Descriptive survey research design was employed for the study. The target population was two hundred and twenty Chemistry Education students in the Department of Science Education, University of Calabar. A sample size of sixty-four...
December 2019
African Journal of Food Science
Effect of coagulants on the physicochemical properties of fresh tofu
Soy flour from soybean was processed to produce fresh tofu using three coagulants namely lime, Epson salt and tamarind. The results obtained showed that the pH of the samples were 7.20 for Epson salt, 5.00 for lime and 5.50 for tamarind. There were significant differences (p< 0.05) in the weight increase of all the samples with Epson salt (46.62 kg) as the highest. Epson salt had the least coagulation time of 6 min....
November 2019
African Journal of Business Management
Corporate governance and risk disclosures: An empirical study of listed companies in Kenya
This paper examines the relationships between corporate governance variables and the extent of risk disclosures among listed companies in Kenya. The study aims to empirically examine the relationship between corporate governance variables and risk disclosures in 48 listed non-financial companies in Kenya. Content analysis of annual reports for the period 2010-2016 was used to measure the level of risk disclosures and...
November 2019
African Journal of Environmental Science and Technology
Occurrence, quantities and probable human health risks of indicatory polychlorinated biphenyls in processed Lates niloticus (L.) products from Lake Victoria in Tanzania
A study was conducted in Lake Victoria to assess the occurrence, levels and risks of indicator polychlorinated biphenyls (PCBs) in four processed Lates niloticus (L.) products (salted-sundried, trims, smoked and deep-fried). Samples extractions were done using QuEChERS method while detection and quantification of congeners was done using a GC- ECD and GC- MS. Six PCBs (CB 28, CB 52, CB 118, CB 138, CB 153 and CB 180)...
November 2019
African Journal of Environmental Science and Technology
Seasonal variations of some physico-chemical properties of water sources that feed Rivers Wouri and Meme of Cameroon
Rivers Wouri and Meme are surrounded by streams and wells and serve for irrigation, fishing, domestic purposes and transportation. Water samples were collected from the rivers in February (dry season) and August (wet season) of 2012 at different sites and at different depths and analyzed for some physicochemical properties. This was to study the effect of seasonal changes on the properties and also infer the possible...
November 2019
African Journal of Environmental Science and Technology
The roles of community-based water and sanitation management teams (WSMTs) for sustainable development: An example of the Bawku West
District, Ghana
Poor sanitation, water and hygiene are related to several and severe negative implications on health and the environment. In recent years, community-based management of water and sanitation facilities have been linked to improving access to these facilities. Ghana is also on its way to achieving the Strategic Development Goals (SDGs) for access to potable water. However, several studies have found gaps between increased...
November 2019
Journal of Agricultural Extension and Rural Development
Turning challenges into opportunity: Potential for adoption of e-extension in Lesotho
Farmers in Lesotho mostly depend on rain-fed agriculture and are in need of access to agricultural information and knowledge in a timely, complete and quality manner. The traditional practice for delivering agricultural information has mainly relied on agricultural extension staff visiting farmers in order to provide advisory services. Due to the limited number of extension staff and other challenges, the delivery of...
November 2019
Journal of Agricultural Extension and Rural Development
Determinants of adoption of improved sorghum package in agro-pastoral households of Somali Region of Ethiopia: A gender perspective
The study analysed determinants of adoption of improved sorghum package between male-headed and female-headed households. The specific objectives were to analyse adoption differentials of improved sorghum package, and to identify factors that affect adoption decision of improved sorghum package by male and female-headed households. Purposeful sampling method was employed to select Woreda of sorghum growers with greater...
November, 2019
African Journal of Pharmacy and Pharmacology
Phytochemical analysis and in vitro antibacterial evaluation of leaf and bark extracts of Alstonia boonei
The antibacterial effect of the leaf, bark and leaf and bark combined of Alstonia boonei on bacterial pathogens, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Streptococcus pneumonia, Proteus mirabilis, Klebsiella pneumonia, Shigella dysenteriae and Salmonella typhimurium was determined using agar diffusion technique to investigate their efficacy as anti-bacterial agent. The phytochemical components...
November 2019
African Journal of Environmental Science and Technology
A chemical speciation study of selected heavy metals in aquatic bottom sediment samples from Mpenge stream, Musanze District, Rwanda
Mpenge stream is regarded as one of the most important domestic water resource in Musanze District; Rwanda. The chemical speciation study of selected heavy metals (Zn, Cu, Co, Cr, Ni, Pb, and Cd) in sediment samples collected from that stream was carried out by means of an analytical procedure involving sequential chemical extraction method and to determine the heavy metals content in different fractions of sediment....
November, 2019
African Journal of Pharmacy and Pharmacology
Acquaintance of Botox: A cross-sectional survey among female students in Karachi, Pakistan
The cosmetic treatment strategies have been considerably popular over the last few decades among the population with respect to age, gender, and ethnicity. These procedures are easily accessible safer, minimally invasive, and more precise. Botox therapy is one of the most common non-surgical cosmetic treatment. Thus, the current study was accomplished to assess the knowledge of female students towards Botox therapy for...
November, 2019
African Journal of Pharmacy and Pharmacology
Evaluation of the immunomodulatory properties and microbial bioburden of three commercial herbal mixtures sold in Awka, Anambra State Nigeria
The consumption of herbal medicine and herbal medicinal products has been on the rise lately. This has led to an increase in research on herbal medicine and its different formulations to gain more knowledge in their constituents, therapeutic effects, its mechanism, and their undesired or toxic effects. The purpose of this study was to evaluate toxicity profile, phytochemical constituents, microbial quality and...
November 2019
African Journal of Microbiology Research
Heat shock impact on the growth of Bacillus spp. (SUBB01) and its surveillance in minimal medium under shaking condition
Heat shock proteins (HSPs) are a family of proteins that are produced by all living organisms in response to exposure to stressful condition. The present research aims to study the physiology of Bacillus spp. (SUBB01) under aeration in diverse culture media and temperature at 47, 48, 49, 50, 52, 53 and 54°C. Bacterial growth was measured through enumeration of the viable and culturable growing cells that...
November 2019
African Journal of Microbiology Research
Passive surveillance of clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh
The present study is aimed at investigating clinical poultry diseases in an Upazila Government Veterinary Hospital of Bangladesh through passive surveillance and to know the frequency distribution of antimicrobial drugs prescription pattern. The study was conducted in Ramu Upazila Government Veterinary Hospital under Cox’s Bazar district of Bangladesh from February to March, 2016. A total of 180 cases including 73...
July-December 2019
Journal of Medical Laboratory and Diagnosis
Designing an expert system model for pulmonary TB disease diagnose pre-screen laboratory process
Tuberculosis is a major public health problem in Ethiopia more than half a century ago. If the disease is not treated well and on time, it can lead to severe health problems like lungs, but can also affect other organs, including the central nervous system. Therefore, detecting those diseases at early stages enable us to overcome and treat them appropriately. However, among people in the developing countries like...
July-December 2019
Journal of Physiology and Pathophysiology
Evaluation of ventilatory function of Senegalese patients with type 2 diabetes
Diabetes is a common disease in sub-Saharan Africa. Complications associated with type 2 diabetes mellitus are due to macro-vascular and micro-vascular lesions. One of the less known complications of diabetes is impaired respiratory function. The objective of this study was to evaluate the ventilatory function of Senegalese type 2 diabetics. A total of Sixty-four women composed to 32 diabetic subjects and 32 healthy...
October-December 2019
Journal of Public Health and Epidemiology
Factors associated with pulmonary tuberculosis treatment failure in Togo, 2015-2016
Tuberculosis (TB) treatment failure compromises its elimination as recommended by Sustainable Development Goals. The purpose of this study is to determine the factors associated with pulmonary TB treatment failure in Togo between 2015 and 2016. An unmatched case-control study was conducted on cases of pulmonary TB under treatment at all of 47 TB Diagnostic and Treatment Centers (DTC) in Togo between 2015 and 2016....
October-December 2019
Journal of AIDS and HIV Research
Unprotected sexual practice and associated factors among people on anti-retro-viral therapy at public health facilities of Arba Minch town: Cross-sectional study
Unprotected sexual practice with multiple partners is identified as the greatest risk factor for transmission of human immunodeficiency virus (HIV) in Sub Saharan Africa and it is a public health concern among people infected with HIV. However, due to the focus of HIV prevention efforts was largely on people uninfected with HIV, people on anti-retroviral therapy (ART) were not addressed by prevention strategies in...
October-December 2019
Journal of Public Health and Epidemiology
Assessing tuberculosis preventive methods in the Somme department: Collaboration between the Tuberculosis Control Center and its partners
Tuberculosis Control Center (TBCC) is responsible for prevention of the TB in France. The collaboration of this center with its partners has not yet been studied. All notified cases of TB and all of their contacts screened between 2007 and 2011 were retrospectively included. Communication between actors in tuberculosis control was analyzed. Of the 175 reported cases, the TBCC sent 85.1% of letters to the notifiers,...
October-December 2019
International Journal of Water Resources and Environmental Engineering
Spatial and temporal fluctuation of groundwater depth in Amibara, middle Awash, Ethiopia
Soil salinity is a threat for agriculture under irrigation as it affects the growth and development of plants and the problem is widespread in middle Awash where Amibara irrigated farms are present. Therefore, Measurements of groundwater depth were taken from thirty piezometers in the months of August, September, October, November and December to investigate spatial variability and temporal fluctuation of...
November 2019
African Journal of History and Culture
Oyo-Ondo relations: A study in pristine inter-group relations in Nigeria
The noticeable degree of Benin and Ife influence on Ondo has not obliterated the Oyo factor as a strong force in the history of Ondo, especially its traditions of origin. This paper focuses on Oyo-Ondo connections as a study in pristine inter-group relations. It argues that although Oyo is situated in the savanna region of Yorubaland, while Ondo is placed in the forest region, certain traits offer strong proof that Ondo...
November 2019
African Journal of Biotechnology
Expression profiling, phylogenetic, and structural analyses of a laccase gene from the red palm weevil, Rhynchophorus ferrugineus
Laccases, member of multicopper oxidase (MCO) family enzymes, play crucial roles in insects’ cuticle tanning and pigmentation. The purpose of this study was to identify and characterize a laccase gene from the red palm weevil (RPW), Rhynchophorus ferrugineus. The isolated RPW laccase gene sequence was 3,389 bp, including a 2,163 bp open reading frame that encodes 720 amino acids. The RPW laccase gene conserved the...
November 2019
African Journal of Biotechnology
In vitro regeneration protocol through direct organogenesis for Jatropha curcas L. (Euphorbiaceae) accessions in Ethiopia
Jatropha curcas L. is among important tree crops in the world with a potential for biofuel production. In Ethiopia, there is a soaring investors’ interest to produce Jatropha in the country for biodiesel production. However, insufficient good quality propagation material is a major production constraint. A study was undertaken to establish a protocol for in vitro mass propagation of three Ethiopian Jatropha...
November, 2019
African Journal of Agricultural Research
Impact of DroughtTEGO® hybrid maize variety on agricultural productivity and poverty alleviation
in Kenya
Impact of DroughtTEGO® maize hybrids on agricultural productivity and poverty reduction among small-scale maize farmers were analyzed using 642 households in Kenya. The Water Efficient Maize for Africa (WEMA) project coordinated by the African Agricultural Technology Foundation (AATF) developed the varieties. While on-farm production output and farmers’ testimonies indicate significantly high productivity over...
November, 2019
African Journal of Agricultural Research
Effect of pesticides on Exopolysaccharide (EPS) production, antibiotic sensitivity and phosphate solubilization by Rhizobial isolates from Sesbania bispinosa in Bangladesh
Rhizobium spp. retains a symbiotic relationship with leguminous plants including Sesbania bispinosa by fixing N2 through nodule formation. Several researches suggest that Exopolysaccharides (EPSs) are required for nodule formation. Rhizobial growth parameters as well as the EPS production are affected by the presence of pesticides. The present investigation was performed using three different pesticides which were...
November, 2019
African Journal of Agricultural Research
Disparities and influential factors to men’s and women’s involvement in freshwater aquaculture in Madagascar
This research identifies the factors determining the individual decision to get involved in the aquaculture sector for both men and women through a case study in Madagascar. A rich body of scholarly literature shows that women play an important contribution in the aquaculture sector, particularly in South Asia and Africa. The literature shows that multiple factors, such as lack of access to assets and gender norms,...
November 2019
African Journal of Biotechnology
Effects of genotype and plant growth regulators on callus induction in leaf cultures of Coffea arabica L. F1 hybrid
Coffea arabica, F1 hybrid variety, Ruiru 11 is a highly sought after crop in Kenya due to its alleviated resistance to Coffee Berry Disease and Coffee Leaf Rust coupled with high yield capacity and good cup quality. Access to the variety’s planting materials is limited due to challenges with difficulty in propagation using conventional methods of seed and vegetative propagation; and somatic embryogenesis is...
November, 2019
African Journal of Agricultural Research
Entomocidal activity of some plant extracts against Sitophilus zeamais Motschulsky
(Coleoptera: Curculionidae)
Entomocidal activity of ethanolic leaf extracts of four plant species namely Euphorbia balsamifera Aiton, Lawsonia inermis L., Mitracarpus hirtus (L.) DC. and Senna obtusifolia L. were evaluated in order to assess their protectant ability to stored sorghum against Sitophilus zeamais Motsch. The botanicals were applied to 20 g of sorghum grains at the rate of 25, 50 and 100 mgml-1, while no extracts was added to the...
Page 1 of 1174, showing 50 records out of 58657 total, starting on record 1, ending on 50
