Articles
Page 4 of 1196, showing 50 records out of 59795 total, starting on record 151, ending on 200
African Journal of Microbiology Research
Metabolomics analysis of carotenoid production from Proteiniphilum acetatigenes PSB-W based on LC-MS
August 2020
Metabolomics based on LC-MS was used for the analysis of the fermentation of Proteiniphilum acetatigenes PSB-W treated by different culture time and different light intensity. 26 putative metabolites were detected in samples treated by different culture time. Most of the components were produced in the metabolic activity in order to participate in the whole life process of bacteria. Compared with samples treated with...
African Journal of Agricultural Research
An update of sweet potato viral disease incidence and spread in Ethiopia
August, 2020
Sweet potato (Ipomoea batatas (L.) Lam.) is an important root crop for poor farmers in developing countries. Since the late 1980s, viral diseases have increasingly become a threat to sweet potato production in Ethiopia. This review paper presents the role of sweet potato production for ensuring food security, the level of sweet potato virus research, including the types of viral species identified and their current...
African Journal of Agricultural Research
Impact of soil management and irrigation techniques on water use efficiency in cauliflower cultivation
August, 2020
The objective of this research is to evaluate the impact of soil management and localized irrigation techniques on water use efficiency in the cultivation of cauliflower. The treatments consisted of 4 different types of soil management: Direct seeding using crotalaria and brachiaria cover crops, a treatment used both in conjunction, and another that employed a conventional system. Two different irrigation techniques...
International Journal of Physical Sciences
Variations in equatorial electrojet current along the 210ºMM chain: A comparison of two approaches
July-September, 2020
Variations of equatorial electrojet (EEJ) in six Magnetic Data Acquisition System (MAGDAS) stations (four stations within the magnetic equator region and two stations outside the region) on the 210ºMagnetic Meridian (MM) chain were examined. Data of hourly values of horizontal component of magnetic field, H in the year 2007 for Cooktown (CKT), Amami-oh-Shima (AMA), Davao (DAV), Langkawi (LKW), Yap- Island (YAP) and...
Journal of Parasitology and Vector Biology
Historic and current trends of human African trypanosomiasis in South Sudan
July-December 2020
Human African Trypanosomiasis (HAT) due to Trypanosoma brucei gambiense remains a major public health problem in South Sudan. It causes substantial socio-economic impacts on the livelihoods of poor rural inhabitants. This article throws lights on a review of historic and current trends for evolution of HAT in South Sudan. Data of HAT cases were obtained from several relevant sources including World Health Organization...
International Journal of Livestock Production
Breeding of goats: An indigenous approach to enhancing opportunities for smallholder farmers in Inyathi, Zimbabwe
July-September 2020
In Zimbabwe, at least 97% of the national goat herd is owned by smallholder indigenous farmers. The farmers rarely breed the goats for commercial purposes despite the fact that the country has potential to export goat products. Common breeds in Zimbabwe include the Matabele goats, Mashona goats, Boer goats and the Kalahari goats. With this diversity of the goats’ population, there is need to move from subsistence...
Journal of Geology and Mining Research
Coarse-grained rutile from regolith in Ebensuk west of Tinto, Cameroon
July-September, 2020
Coarse rutile with some grains exceeding 32 mm was recovered from regolith excavated from three pits (ABC) at Ebensuk. The rutile concentration ranges from 2.53 kg/m3 of regolith material in Pit C to 2.83 kg/m3 in Pit B with an average of 2.66 kg/m3. The rutile is black, longitudinally striated, with a metallic to adamantine luster and hard. Results of grain size (Z) analysis show that the rutile crystals range in size...
Scientific Research and Essays
Haemoglobin genetic types and its association with qualitative traits in West African Dwarf sheep
July-September, 2020
This study was carried out to investigate the haemoglobin genetic types and their association with qualitative traits in West African Dwarf (WAD) sheep. The Modified Stratified Sampling Technique (MSST) was used to select the sampling sites within the selected state and animal samples within the sampling sites. A total of 280 adult sheep comprising 140 rams and 140 ewes aged 4 years were used for the study. Data were...
Journal of Development and Agricultural Economics
Social and economic values chain assessment of key non-timber forest products around Mbam and Djerem National Park’s ecoregion of Cameroon: Case of Xylopia aethiopica, Beilschmiedia anacardioides and Beilschmiedia jacques-felixii
July-September 2020
The periphery of Mbam and Djerem National Park in Cameroon harbors valuable forest resources including key non-timber forest products (NTFPs) that contribute to sustain livelihood of many people in terms of consumption and income generation. However, poor studies have been carried out to assess the socio-economic importance of the value chain of key NTFPs, threats on resources and implication for trade development. We...
Journal of Development and Agricultural Economics
Characterization and analysis of farming system of Cheliya and Ilu Gelan districts of West Shewa Zone, Ethiopia
July-September 2020
The study characterizes and analyzes the existing farming system and identifies the production and marketing constraints of Cheliya and Ilu Gelan districts with cross-sectional data of 105 sample households. The farming system of the study areas is characterized as mixed farming systems with 59.1 and 27.44% contribution of crop and livestock, respectively for livelihood activities. From the survey results, disease...
Journal of Dryland Agriculture
Mycorrhiza co-association with Aspilia pruliseta Schweif. and phosphorus uptake effects on growth of gadam sorghum in the semi-arid lower Eastern Kenya
August 2020
Mycorrhiza fungi are important components of soil microbiota in the rhizosphere and greatly influence the uptake of mineral elements by plants. A greenhouse experiment was conducted at the University of Embu to evaluate effect of Aspilia pruliseta rhizosphere mycorrhiza on phosphorus uptake by gadam sorghum. Pots were filled with soil from a predetermined source in the semi-arid Gakurungu, Tunyai and Kanyuambora regions...
African Journal of Biotechnology
Molecular epidemiology of schistosomiasis in Central River Region of The Gambia
August 2020
Schistosomiasis is the second most prevalent tropical parasitic disease after malaria, and one of the leading cause of morbidity and mortality in developing countries especially in Africa. This study was carried out among students, farmers and fishermen/women from four villages in the Central River Region of The Gambia. The aim of this study was to show the prevalence value of schistosomiasis in Central River Region of...
African Journal of Biotechnology
Wolbachia infected anthropophilic mosquitoes in The Gambia are not infected with filarial nematode
August 2020
Wuchereria bancrofti has been reported to cause 90% of all cases of lymphatic filariasis in Africa. wolbachia endosymbiot infect a wide range of insects and nematodes. This study was conducted in 48 settlements (8 from each division). A total of 2003 mosquitoes was pooled into 120 clusters from the 48 settlements in The Gambia. Polymerase chain reaction (PCR) was used to detect the presence of Wolbachia and filarial...
Journal of Pharmacognosy and Phytotherapy
In-ovo biological activity of Boswellia dalzielii stem bark extract and fractions against Newcastle disease virus
July-September 2020
Newcastle disease remains a disease of global concern and serious economic challenge to the poultry industry because of its high mortality rate, in spite of the various intervention programs including vaccination. This research is aimed at studying the antiviral activity of the extract and fractions of Boswellia dalzielii against Newcastle disease virus (NDV) using chicken embryonated eggs. Phytochemical analysis was...
African Journal of Food Science
Modeling the growth dynamics of Lactobacillus lactis CWBI B-1410: Effect of changes in glucose and nitrogenized matter in the Man Rogosa Sharpe (MRS) culture media
August 2020
Food preservation is a big challenge for the industries. The mechanisms of preservation involved microorganisms such as lactic acid bacteria. Modeling the micro-organisms growth is a very useful information to well-understand their behavior and to propose the best conditions for food preservation. In this way, this study was to propose a mathematical model of the dynamical growth of Lactococcus lactis CWBI-B1410 which...
African Journal of Food Science
Performance of a fabricated solar-powered vapour compression cooler in maintaining post-harvest quality of French beans in Kenya
August 2020
The quality and shelf life of French beans can be affected within hours of harvesting if the produce is not cooled after harvest. Solar-powered cooling systems are suitable for use in rural areas that are not connected to the grid. This study aimed at developing a solar powered cooling system to improve the quality of French beans in smallholder farms in Kenya. Freshly harvested French beans were stored under...
African Journal of Plant Science
Analysis of combined strategies for the management of Asian soybean rust
August 2020
Asian soybean rust, if not well managed, can reduce grain yield up to 90%. Due to the severe damage caused by the disease, especially in Brazil, it is important to evaluate management strategies combined with fungicides, to minimize the losses. The aim of the work was to evaluate the effect of adopting different combined management strategies on the severity of soybean rust and its impact on the performance of the crop....
African Journal of Plant Science
Races of Colletotrichum lindemuthianum (Sacc. & Magnus) Briosi & Cavara in major bean growing regions in Tanzania
August 2020
Breeding for resistant varieties has been shown to be the most suitable method to control bean anthracnose caused by Colletotrichum lindemuthianum though the method is challenged by the existence of many races of the pathogen. This work focused on characterizing races of C. lindemuthianum from potential bean agro ecological zones of Tanzania using a set of differential bean cultivars. From 144 anthracnose infected bean...
African Journal of Plant Science
The in vitro, ex vivo, and in vivo experimental findings of Nephrolepis exaltata
August 2020
Nephrolepis exaltata (L.) Schott decreases the heartbeats of cockroaches and it was postulated that the plant could be an anticholinesterase agent and could have effects. It was performed: (a) In vitro: hydroalcoholic extract of N. exaltata was pharmacognostically characterized, the cholinesterase activity determined with 1.0 and 3.0 mg/ml, comparing to positive control and negative control, and the preliminary toxicity...
African Journal of Plant Science
Distribution and ecological drivers of family celastraceae in Côte D’ivoire
August 2020
Most studies on drivers of plant diversity and distribution have focused on trees and combine several plant families. Climbers which are part of the particular characteristics of tropical rainforests due to their richness and abundance have been rarely related to ecological factors. This study evaluates the importance of vegetation type and total annual rainfall on the distribution of the Celastraceae plant family which...
Educational Research and Reviews
Influence of classroom environment on senior secondary school students’ academic achievement in mathematics in Calabar Nigeria
August 2020
This study examined classroom environment and mathematics achievement of senior secondary school (SS2) students’ in the Calabar Cross River State, Nigeria. Ex-post facto quasi-experimental research design was used to test two hypotheses on the influence of two classroom variables, class size and instructional materials on students’ academic achievement in mathematics. A sample of 700 students was selected...
Educational Research and Reviews
Use of online collaborative learning strategy in enhancing postgraduates’ learning outcomes in science education
August 2020
Most postgraduates in Nigeria Universities are family and working-class students. They rarely have time to stay and study in the classroom due to pressures at home and work-place. To enhance their outcomes in the program despite their tight schedule, the use of online collaborative learning strategy was employed. Pretest-posttest, control quasi-experimental research design was used on 38 postgraduates in Science...
Journal of Plant Breeding and Crop Science
Performance evaluation and selection of new maize hybrids under sole and inter crop production systems
July-September 2020
Screening of maize genotypes under different cropping systems (sole and inter cropping) is very important to understand the genotypes response for different abiotic and a biotic stress. Nine maize genotypes including the standard check (BH-543) were planted and evaluated at research and farmers’ fields in the 2011 and 2012 cropping seasons. Farmers were invited to evaluate the genotypes based on their criteria of...
Journal of Geography and Regional Planning
Perception of local community toward protected woodlands at Dugda Woreda, East Shewa Zone, Oromia, Ethiopia
July-September 2020
Woodlands of Ethiopia are estimated to be around 70%. Unfortunately, this woodland is seriously under threats, mostly linked to human interference, livestock and climate change. To overcome these problems, protected woodlands were implemented in different parts of the country including Dugda Woreda Giraba KorkeAdii Kebele. However, the perception of local community towards protected woodlands was not studied. As a...
Journal of Accounting and Taxation
Challenges of business income tax administration with special emphasis on collection process in Ethiopia: The case of Hadiya zone, Hossana town
July-September 2020
The objective of this study is to assess the challenges of business income tax administration with special emphasis on collection process in the case of Hadiya zone, Hossana town. To answer the research questions, the researcher used both primary and secondary data as a source of information. Initially, by using proportionally stratified sampling technique, 341 tax payers were selected as a sample size from the total...
Educational Research and Reviews
Development model of competencies for teachers of Early Childhood Development Center under the local administrative organization with application of empowerment evaluation
August 2020
This research focuses on synthesizing concepts and needs for the development of teachers' competencies and studying the performance in accordance with the development model of competencies for teachers of the Early Childhood Development Center with application of empowerment evaluation. The research was divided into 3 stages. In the first stage, the needs for the developments of teachers’ competencies were...
Educational Research and Reviews
Effect of art education program given to gypsy children on children's creativity
August 2020
In the study, the effect of art education program given to gypsy children on children's creativity was examined. The study group of the study consisted of 51 gypsy children in the 5 to 6 years age group who show normal development and who attend private, official, independent kindergartens and kindergartens in primary schools under the Ministry of National Education in the Doğanlar district of Karatay county of...
Journal of Microbiology and Antimicrobials
Prevalence, susceptibility testing and multi drug resistance risk factors to methicillin resistant Staphylococcus aureus in nasal carriage of hospitalized patients and medical staff in selected hospitals in Cameroon
July-December 2020
Methicillin-resistant Staphylococcus aureus (MRSA) is a major hospital acquired pathogen. In Cameroon, there is limited data on nasal carriage of MRSA and its antibiotic susceptibility testing and risk factors for multi resistance to antibiotics in hospitalized patients and medical staff . A prospective, qualitative, cross-sectional hospital-based study was carried out. Anterior nasal swabs were taken from 579...
African Journal of Biotechnology
Genetic characterization of indigenous Tswana pig population using microsatellite markers
August 2020
The indigenous Tswana pig is currently listed as an endangered animal genetic resource and if not conserved, might go extinct. The objective of this study was to assess the genetic diversity (genetic characterization) of the indigenous Tswana pig population. Blood samples were collected from 30 randomly selected Tswana pigs in Kgatleng and South-East districts of Botswana for the assessment of genetic diversity using a...
International Journal of Physical Sciences
Application of integrated geophysical methods in environmental studies: A case study of oil spillage in Thange Area Makueni County, Kenya
July-September, 2020
This research was conducted with the aim of mapping the extent of soil and ground water hydrocarbon contamination from an oil pipeline leak point within the area. An integrated geophysical survey approach involving horizontal electrical profiling (HEP), vertical electrical sounding (VES) and Gravity Survey was applied. Resistivity and gravity lows were identified as aquifer zones confined within basalts and potential...
International Journal of Peace and Development Studies
Investigating the impact of child abduction and cattle raiding among the Dinka, Nuer and Murle communities in Jonglei State, South Sudan
July-December 2020
Child abduction and cattle raiding pose a threat to sustainable socio-economic development among the Dinka, the Nuer and the Murle communities in Jonglei State, South Sudan. A 7-month study was conducted to investigate the impacts of child abduction and cattle raiding among the three communities-Dinka, the Nuer and the Murle community. Two hundred fifty households, one hundred fifty two Key Informant Interviews (KIIs)...
African Journal of Environmental Science and Technology
Statistical modeling of diesel leaching rate in soils at base transceiver stations
August 2020
The process of modeling contaminant volume, rainfall intensity, and soil depth was investigated on diesel leaching and retention in soil subjected to oil pollution from five Base Transceiver Stations. The experimental runs were carried out over three operating parameters which include contaminant volume (50-350 ml), rainfall intensity (5- 10 mm/h), and soil depth (30 - 90 cm) using Response Surface Methodology. Among...
Journal of Toxicology and Environmental Health Sciences
L-Theanine: Neuroprotective Against Trichloroethylene-induced Parkinson’s Disease Hallmarks
July-September 2020
Trichloroethylene (TCE), a common water pollutant linked to Parkinson’s Disease (PD), induces dopaminergic neurodegeneration. L-Theanine (L-Th) was explored as a potential treatment for TCE-induced PD due to its previously elucidated neuroprotective properties. Cell viability, cytotoxicity, and cell density were evaluated using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) cell viability assay...
African Journal of Food Science
Evaluation of the nutritional and antioxidant potentialities of Capparis corymbosa
August 2020
The study was undertaken with the objective of contributing to the search for new sources of dietary antioxidants. It aimed to assess the dietary potential, bioactive compound levels and antioxidant activities of the leaves and fruits of Capparis corymbosa, a plant food from Burkina Faso. Standard methods were used to assess the nutritional potential of leaves and fruits as well as the levels of bioactive compounds and...
Journal of Public Health and Epidemiology
Factors affecting one-year follow-up visit after cryotherapy among women in Côte d’Ivoire: A retrospective cohort analysis
July-September 2020
Cervical cancer screening program based on a single visit approach through visual inspection with acetic acid (VIA) and cryotherapy is scaled up since 2012 in Cote d’Ivoire. To assess factors affecting one-year follow-up visit after cryotherapy, a retrospective cohort analysis was performed among all women tested positive and treated by cryotherapy in cervical cancer units in Abidjan from 2010 to 2014. A logistic...
African Journal of Agricultural Research
Global analysis of millet-based household farms: Characterization of the Senegalese production system of Niayes and Groundnut basin areas
August, 2020
Niayes and Groundnut basin areas are among the largest strongholds of rainfed agriculture in Senegal. In the agricultural holdings of both agro-ecological areas, main speculations are far from optimizing their agronomic production potential. In order to analyze the organizational capacity and decision-making processes of producers, a global agronomic diagnostic work was undertaken out on the scale of 180 agricultural...
African Journal of Agricultural Research
Retrospective study of the contamination of exported sesame by Salmonella species from 2007 to 2017 in Burkina Faso
August, 2020
Sesame (Sesamum indicum) is one of the oldest and most traditional oilseed crops, valued for its high-quality seed oil. This culture was introduced in Burkina Faso at the beginning of the 20th century where it occupies a place of cash crop. The majority of sesame produced in Burkina Faso is export oriented. However, the contamination by Salmonella remains an unsolved problem. This retrospective study was carried out in...
African Journal of Agricultural Research
Inhibition of root growth as mode of action of two rice yellow mottle virus pathotypes isolated in Mali
August, 2020
In Mali, the economy is mainly based on agriculture. Rice contributes about 5% of the GDP and constitutes a strategic sector with enormous potential. Despite its strategic importance, rice cultivation faces multiple biotic constraints among which rice yellow mottle virus disease is the most important one with an incidence varying from 60 to 100%. To reduce yield loses due to this disease, we determined the mode of...
International Journal of Nursing and Midwifery
Effects of criterion-based audit on monitoring and management of normal and prolonged labor: An intervention study in Tanzania
July-September 2020
The use of cesarean section (CS) and oxytocin for labour augmenttion may contribute to increase morbidity and mortality of mothers and newborns. The objective of the study was to evaluate the Criterian Based Audit (CBA) on CS rates and oxytocin use in labouring women. A prospective intervention study by CBA was performed at hospital in Tanzania. Included were 523 labouring women at a gestational age of at least 28...
Journal of Public Health and Epidemiology
Assessing predictive factors of the patient’s length of stay in the emergency room of Yaoundé Central Hospital, Cameroon
July-September 2020
We assessed whether the emergency room at Yaoundé Central Hospital (YCH) met international standards; while analyzing factors that are associated with the length of stay, a key performance indicator of the emergency medicine department. Based on the data of patient admissions and discharges recorded from February 2017 to June 2018 in the emergency room of YCH, data was extracted from about two thousand research...
Medical Case Studies
Uterus preservation after placenta percreta and uterine rupture: A case report
July-December 2020
Placenta percreta and uterine rupture are associated with possible massive intraperitoneal bleeding, which can be fatal if not recognised. We describe a case of a 40-year-old multigravida with a history of two instances of placenta percreta and three instances of uterine rupture, previous artificial abortion, and uterine curettage. The patient’s uterus had been preserved after undergoing an emergency uterus repair...
African Journal of Agricultural Research
Constraints limiting the improvement of manure management as climate smart technology for smallholder dairy farmers
August, 2020
The global quest for a sustainable bio-economy has brought to the fore importance of engaging agricultural systems in the production and in practice change. There have been issues limiting farmers from improving the practice of manure management as smart climate technology. The objective of this paper was to highlight the constraints, type, and valuation of manure types and information sources that smallholder dairy...
African Journal of Agricultural Research
A literature review on yield gaps of various root, tuber and banana crops as a background for assessing banana yield reductions due to pests and diseases at a field site in western Burundi
August, 2020
Banana pests (corm weevil and root nematodes) and diseases (Xanthomonas wilt of banana, banana bunchy top disease and fusarium wilt) are major constraints to banana production in Central Africa. The pests cause various degrees of yield reduction, while plants affected by three of the diseases eventually die before producing an edible bunch. Studies on yield gaps for most of these constraints are currently limited. This...
African Journal of Agricultural Research
Quantitative trait loci (QTL) mapping of resistance to coffee berry disease (Colletotrichum kahawae Waller & Bridge) in Coffea arabica L. variety Rume Sudan
August, 2020
Coffee Berry Disease (CBD) is a major constraint that limits Coffea arabica production, whose resistance is governed by three genes, T, R that are dominant and recessive k in varieties Hibrido de Timor (HDT), Rume Sudan (RS) and K7 respectively. This study identified the genomic region occupied by R-gene using F2 genotypes from varieties RS and SL28; and Single Nucleotide Polymorphic (SNP) markers obtained through...
Journal of AIDS and HIV Research
Assessment of the effect of anti-retroviral therapy on haematological parameters in HIV positive individuals in Zaria
July-December 2020
A total of 230 patients receiving HAART for the first time and followed regularly were retained and their information gotten using a questionnaire. Of this number, 146 (63.5%) were on Stavudine + Lamivudine + Nevirapine (Regimen 1). 84(36.5%) while the remaining were on zidovudine + Lamivudine + Nevirapine (Regimen 5). The distribution was 75(32.6%) males and 155(67.4%) females. Blood was collected from each patient and...
Journal of Veterinary Medicine and Animal Health
Serological survey for avian metapneumovirus in commercial chickens from different climatic zones in Nigeria
July-September 2020
Avian metapneumovirus (aMPV) is an important poultry pathogen causing an acute highly contagious upper respiratory tract infection in chickens, and could result in swollen head syndrome. The disease causes significant economic losses in turkey and chicken flocks; however, its existence in the Nigerian poultry industry is not well defined. Also, the influence of weather on the prevalence of the disease is unknown. This...
African Journal of Mathematics and Computer Science Research
Integral Tau method for fourth-order ordinary differential equations with third degree over determination
July-December 2020
This paper is concerned with the solution of a class of fourth order initial value problems in ordinary differential equation by the integrated formulation of the Tau method. The initial focus is the class with a maximum of third degree overdetermination. The matrix equations were constructed based on the degree of overdetermination and for purpose of automation. The automated Tau system was tested on some selected...
African Journal of Agricultural Research
Intrapopulation phenotypic variation in Piartal (Chenopodium quinoa Willd.) from the Department of Boyacá, Colombia
August, 2020
Chenopodium quinoa Willd., is an interesting plant with a great adaptation to adverse environmental factors and exceptional nutritional qualities. It shows great genetic variation, which organization remains poorly documented. In Boyacá, there are few studies on the morphological characterization of cultivated materials, and there is no certified planting material, resulting that the farmers are planting a...
African Journal of Agricultural Research
Grass species for range rehabilitation: Perceptions of a pastoral community in Narok North sub-county, Kenya
August, 2020
Land degradation is a global problem leading to a diminished production capacity of the rangelands. The consequence is reduced potential to provide ecosystem services and increased vulnerability to the inhabitants. Biological soil water conservation measures can reverse the trend. Different communities prefer different grass species for rehabilitation as communities vary in location, needs, priorities, preferences and...
Journal of Agricultural Extension and Rural Development
ICT and challenges of agricultural extension education
July-September 2020
After the novel coronavirus outbreak, many countries closed universities. This situation urges to implement online delivery as an alternative method. This study aimed assessing the access to and use of ICT by students, the ICT competencies possessed by the students, and assesses the current level of students’ readiness for online education methods in the developing country like Ethiopia. Sample of 106...
Page 4 of 1196, showing 50 records out of 59795 total, starting on record 151, ending on 200
