Articles
Page 8 of 1239, showing 50 records out of 61917 total, starting on record 351, ending on 400
December 2021
Journal of Environmental Chemistry and Ecotoxicology
Histological and cytotoxic evaluation of Carica papaya seed oil and its potential biodiesel feedstock
Carica papaya is a fruit known for its great economic values in tropical Africa due to its diverse industrial, medicinal and nutritional benefits. In this study, oil was extracted from dried powdered C. papaya seeds using n-hexane as extraction solvent. The physiochemical characterization of C. papaya seed oil extract was investigated using AOAC standard procedures. Acute toxicity test was carried out to determine the...
December 2021
Journal of Agricultural Extension and Rural Development
Agripreneurship development among small scale farmers In Anambra State, Nigeria
The continuing decline in the price of the crude oil in the international market is a pointer to the fact that oil sector can no longer guarantee economic viability and sustainability in any nation. In Nigeria, this realization has led to increased urgency of the need to revitalize the agricultural sector, possibly return to its glorious days in the immediate post- independence. To drive the process, scholars argue for...
December 2021
African Journal of Pharmacy and Pharmacology
Anticancer activity of terpenoid saponin extract of Psidium guajava on MCF-7 cancer cell line using DAPI and MTT assays
Psidium guajava (Guava) could be an ancient remedy used for a variety of health conditions. Research suggests that guava fruits and leaves might have a variety of advantages. Guava is the tropical tree with yellowish-green skin fruits, and widely grown in Central America and Asia. Individuals use guava leaf tea as a treatment for gastric symptoms in many countries, together with India and China. In different countries,...
December 2021
African Journal of Pharmacy and Pharmacology
Antiplasmodial activities of leaves and trunk bark of Sclerocaria Birea (A. Ric H.) Hochst (Anacardiaceae), a plant used in traditional medicine of Niger
In the crude extracts of the bark and leaves of Sclerocarya birrea, have been characterized sterols, triterpenes, saponosides, tannins, anthocyanosides, coumarins, reducing compounds, alkaloids and carotenoids. Tests were carried out in vitro with extracts from each part of the plant to assess their efficacy against strains of Plasmodium falciparum sensitive to chloroquine K1 and that resistant to chloroquine 3D7. The...
December 2021
Journal of Petroleum and Gas Engineering
Water invasion evaluation of Kela 2 Gas Field
Kela 2 Gas Field is a large blocked structural reservoir with bottom water in Kuqa Depression, Tarim Basin. Reservoir is mainly deposited as delta front underwater distributary channel in Bashijiqiuke Formation during Early Cretaceous. Reservoir thickness is over 460 m and average net-to-gross ratio is 78%. There developed faults in the reservoir which has strong anisotropy, porosity of the reservoir is 10 to 18% while...
December 2021
African Journal of Agricultural Research
Yield variations of six common bean (Phaseolus vulgaris L.) varieties under salt-affected soils in the Lower Shire Valley, Southern Malawi
Performance of six released bean varieties was assessed under salt-affected soils at Nkhate and Masenjere irrigation schemes in Chikwawa and Nsanje districts, respectively in Malawi. The six varieties, Chimbamba, Napilira, Kalima, BCMV-B1, BCMV-B3 and Maluwa, were grown during the 2014/2015 growing season, employing a randomized complete block design. There were five replicates at each site, arranged in the upper,...
December 2021
Scientific Research and Essays
Assessment of the antifertility effects of some plants in male albino mice
Some medicinal plants contain natural compounds such as isoflavonoids and polyphenols that produce sterility in male animals. The aim of the present study is to investigate the effects of the chloroform extract of the seeds of Sea Island cotton, Gossypium barbadense; the ethanolic extract of seeds of soybean, Glycine max; and the ethanolic extract of the leaves of rosemary, Rosmarinus officinalis, on the fertility of...
December 2021
African Journal of Microbiology Research
Taeniasis-cysticercosis complex and tuberculosis in food
Although in 2020 the country's Gross Domestic Product (GDP) declined 4.1% compared to the previous year, the participation of livestock in the same period increased its representation from 8.4 to 10%. It is estimated that Brazil's contribution to the world food market has grown from 20.6 billion to 100 billion and the prospects are for greater increases for the coming years. In terms of people fed, the numbers...
December 2021
African Journal of Food Science
Evaluation of aflatoxin B1 contamination of peanut butter in The Gambia
Aflatoxins are poisonous, mutagenic, and carcinogenic compounds produced by Aspergillus fungi that contaminate various agricultural produce and products including peanut butter. Peanut butter is among the most consumed recipe in The Gambia. Thus, a cross-sectional assessment was conducted to evaluate the levels of aflatoxin contamination in processed peanut butter, sold and consumed locally in the country. In...
December 2021
African Journal of Bacteriology Research
High prevalence of multidrug resistant enterobacteriaceae isolated from wastewater and soil in Jos Metropolis, Plateau State, Nigeria
The widespread emergence of antibiotic resistance, particularly multiple antibiotic resistance (MAR) among bacterial species has become one of the most serious challenges in environmental protection. Environmental bacteria are a reservoir of antibiotic resistance genes (ARGs) and a potential source of novel resistance genes in environmental organisms. In the current study, we investigated the high prevalence of...
December 2021
Journal of Agricultural Biotechnology and Sustainable Development
Sorghum landrace germplasm: Genetic resources for demand lead product development and profiling in modern crop improvement
Understanding genetic variation underlying adaptive traits responsible for sorghum’s ability to tolerate challenging growing environments is of great importance. The present investigation was conducted to identify sources of genetic traits for utilization in product and hybrid parent development. Result showed that there exists variability for local names with Farafara and Kaura as most common types...
December 2021
Journal of Geography and Regional Planning
Inter-regional differential in access to, and satisfaction from basic infrastructure between oil-producing and non-oil producing areas of Ondo State, Nigeria
This study aims at measuring and appraise the differential access of people in the oil bearing and non-oil bearing sub-regions of Ondo State, Nigeria; to living facilities. Housing, transportation, healthcare, power and potable water are the basic infrastructural facilities selected for the study. Four local government areas (LGAs) constitute the sample frame, while the sample size was taken from fifteen communities in...
December 2021
International Journal of Livestock Production
Assessment of the effects of Newcastle disease vaccination on chicken mortality and egg production rates in Machakos town sub-county, Kenya
A study was done to evaluate the effects of the Newcastle disease vaccine on chicken mortality and egg production in Machakos Town Sub-County. Kola and Kalama wards were chosen, and the data was collected from rural poultry farmers using a semi-structured questionnaire and Women Empowerment Livestock Index (WELI). The sample size was determined using N= Z2 (1-P) P/L2 statistical formula. A total of 261 chicken household...
December 2021
International Journal of Livestock Production
Pastoral livestock farming in the Eastern Malian Sahel (Hombori): Survey on flows in two livestock markets
Pastoral livestock farming is a major activity in the Sahel. In the eastern Malian Sahel, in addition to its contribution to the household economy, this type of livestock farming plays an important role in enhancing the value of an environment that is not very conducive to rain-fed crops because of its low rainfall. This study was conducted in the district of Hombori to assess marketed livestock production through the...
December 2021
Journal of Plant Breeding and Crop Science
Evaluation of soybean (Glycine max (L.) Merr.) breeding lines and genotype-by-environment interaction across production environments in Southern Africa
Yield is a quantitative trait known to be influenced by changes in the environment in which the crop is grown, suggesting the need to evaluate soybean lines in different growing regions to assess their adaptability and stability. The objective of this study was to evaluate the performance, yield stability, and genotype × environment interaction (G×E) in soybean cultivars, and the informativeness of six...
December 2021
African Journal of Environmental Science and Technology
Phenology and mechanisms of the early upwelling formation in the southern coast of Senegal
Mechanisms of the interannual variability of upwelling onset dates on the Petite-Cote of Senegal are investigated using daily NEMO model data outputs and NOAA ocean surface temperature observations (OISST). We first determined the phenology (onset dates, end dates, duration and occupied area of the upwelling) over the Petite-Côte located in south of the Senegalese coast. Our results show that upwelling in the...
December 2021
African Journal of Environmental Science and Technology
Characterizing groundwater vulnerability in developing urban settings using DRASTIC-LuPa approach: A case study of Aba City, Nigeria
The impact of certain unregulated land-use activities harms the quality of water resources and reduces the sufficiency of drinking water in many developing countries. This study aimed to capture the impact of such activities and evaluate the specific groundwater vulnerability using a modified DRASTIC approach. The DRASTIC-LuPa was proposed and implemented for Aba City, Nigeria by incorporating land-use and the...
December 2021
African Journal of Food Science
Technological advancements in the drying of fruits and vegetables: A review
The aim of the review was to look into technological advances and methods for dehydrating fruits and vegetables, as well as the shortcomings of these methods and potential ways to improve them. All fruits and vegetables can be dried in various forms, including cuts, juice, paste, slurry, and even whole, using various dryers. Recent research on drying has focused on improving energy consumption/ efficiency, product...
December 2021
African Journal of Agricultural Research
Effects of fertilizer application on yield and yield related parameters of low yielding potato varieties in Uganda
The study was carried out in the first and second seasons of 2015 and the first season of 2016 at Kachwekano and Kalengyere stations of Kachwekano Zonal Agricultural Research and Development Institute in Rubanda county, Kabale district. A Completely Randomised Block Design was adopted with three replications and 4 treatments. The treatments composed of T1: Control, T2: 100 kg/ha N:P:K, T: 150 kg/ha N:P:K, and T4: 200...
December 2021
African Journal of Agricultural Research
Utilisation of Zai pits and soil fertility management options for improved crop production in the dry ecosystem of Kitui, Eastern Kenya
This study sought to address challenges faced by smallholder farmers in the drylands of Eastern Kenya including soil fertility decline and low profitability resulting from poor soil and water conservation measures. An experiment was set up at Kabati, Kitui County, Kenya in the year 2018/2019 seasons to evaluate the effects of the interaction of zai pits, cattle manure and fertilizer inputs on soil nutrients, sorghum...
December 2021
African Journal of Microbiology Research
Molecular characterization of high-risk infection vaginal bacteria isolated from pregnant women in CHU-MEL of Cotonou (Benin)
The aim of this study is to determine the distribution of the genotypic pathogenicity traits of vaginal high-risk infectious bacteria (HRIB) collected in the CHU-MEL of Cotonou (Benin). To achieve this, a recto-vaginal swab of 42 pregnant women in the third trimester of pregnancy was collected. Species identification was carried out by specific biochemical tests. Antimicrobial susceptibility was tested according to the...
December 2021
Journal of Plant Breeding and Crop Science
Evaluation of durum wheat (Triticum turgdium var durum) genotypes for drought tolerance using morpho-agronomic traits
Identification of durum wheat variety adapted to drought environment is required to expand durum wheat cultivation to lowland areas in order to meet the growing demand of the crop for industrialization. The objective of the study was to evaluate and identify durum wheat genotypes tolerant to terminal drought, using morpho-agronomic traits. One hundred and forty four durum wheat (Triticum turgidium var durum) genotypes...
December 2021
International Journal of Peace and Development Studies
Sexual violence against women during the Rwandan genocide: A narrative review
The Rwandan genocide was characterized, in addition to brutal killings, by equally brutal acts of sexual torture, mutilation, and enslavement as weapons against Tutsi women and girls on a mass scale. Existing scholarship on sexual violence has enhanced a general increased understanding of the contexts and challenges confronting survivors. Though the raping of women in combat and occupation zones is very common, it is...
December 2021
African Journal of Mathematics and Computer Science Research
A novel 2-character randomized response technique model applicable to real life situations
In this paper, we propose a model for estimating population proportion of a personality possessing two related sensitive attributes in survey sampling by extending Warner’s Randomized Response Technique (RRT). The proposed estimators are more efficient than Lee’s simple model estimators as the population proportion escalates. Our proposed model performs better than Lee’s crossed model estimators when...
December 2021
Journal of Media and Communication Studies
Journalism versus national security: An analysis of reportage by journalists in Kenya defense forces activities during “operation Linda Nchi” (2011-2012)
This study sought to investigate the complex relationship between journalistic activities and national security. The study answered the following questions: At what point should reporters put aside their professional and career interests for the sake of national security? Should press limits be self-imposed? What obligations do journalists have when it obtains information with national security implication? The...
December 2021
Journal of Veterinary Medicine and Animal Health
Prevalence of gastrointestinal nematodes in donkeys and Mule's species in Anseba Region, Eritrea
Gastrointestinal helminths (GIH) are the commonly diagnosed infections since ponies, donkeys, and horses are hosts to a wide range of helminths. It is the first qualitative and quantitative cross-sectional study conducted from February 2 to May 20, 2018, to estimate the prevalence of the major gastrointestinal nematodes in donkeys and mules in the Anseba region. For this purpose, 300 donkeys and 30 mules were examined....
December 2021
Journal of Media and Communication Studies
The semiotic guerrilla: Internet subcultures as political resistance in China
This paper adopts a critical discourse analysis in combination with in-depth interviews of 55 people to examine three representative cases of Internet subcultures created and practiced by Chinese netizens from 2009, in order to define the formats, strategies and tactics of these subcultures in relation to the broader mainstream political culture. The paper finds that the Chinese subculturists employ tactics of homophony...
December 2021
Journal of Medicinal Plants Research
Bioactive small-molecule constituents of Lao plants
Laos has a rich plant diversity, and medicinal plants are used extensively in Lao traditional medicine for the treatment of a variety of human diseases. However, only a relatively small number of these plants have been investigated for their major components with potential antitumor, anti-infective, and other types of bioactivities. These species include Asparagus cochinchinensis, Diospyros quaesita, Gongronema...
December 2021
Journal of AIDS and HIV Research
Analysis of HIV Knowledge, attitude and health behavior among business establishment Worker in Bangkok, Thailand
Despite advancements in treatment and prevention, HIV and other sexually transmitted infections (STI) remain global public health issues. Nearly 40 years on, Thai business establishments are still facing adverse effects of the HIV epidemic. This study assessed HIV knowledge, transmission risk, stigma, and health behavior among a sample of 1,000 workers from the 2019 round of the Bangkok Behavioral Surveillance Survey...
December 2021
International Journal of Livestock Production
Economic loss associated with bovine campylobacteriosis in selected districts of Bangladesh
Bovine campylobacteriosis is considered to be common disease in farmed female cattle of Bangladesh with various effects on animal productivity. However, no economic impact assessment labeling the burden of this disease has been conducted. Secondary data combined with the primary data on different financial parameters of livestock goods and associated parameters collected through stakeholder interviews were utilized in...
December 2021
Journal of Chemical Engineering and Materials Science
Structural properties of high density polyethylene matrix composites reinforced with open air and furnace rice husks ash
In this work, rice husks ash (RHA) was introduced to pure and recycled high density polyethylene (HDPE) matrix, at varying ration (0-50%) to formulate rice husks ash High density polyethylene (RHA-HDPE) composite. RHA was obtained by burning fresh rice husks either by open-air burning (oRHA) or furnace calcination at 700°C (fRHA). The composite samples were made by melt-mixing the HDPE in an oven at a...
December 2021
African Journal of Environmental Science and Technology
Uroclhoa mosambincensis: A potential native phytoremediator for soils contaminated with arsenic
Industrial development has caused the contamination of the environment, leading to biodiversity loss and human health concerns. The use of native plants and/or their associated microbiota is a sustainable solution for reducing or transforming contaminants into less harmful forms. This study was conducted to evaluate the remedial potential of Uroclhoa mosambincensis in soils contaminated with arsenic. In a greenhouse...
December 2021
African Journal of Environmental Science and Technology
The environmental impact of landfill fires and their contaminant plumes at the Chunga landfill site, Lusaka, Zambia
The management of solid waste is recognised as a challenging activity with respect to the environment, particularly within rapidly growing urban centres in Lower Income Countries. This paper examines the issue of landfill-waste-generated fires and resultant pollution plumes sourced within the Chunga Landfill Site, Lusaka, Zambia. The authors present the results of a geospatial analysis research programme to map and...
December 2021
International Journal of Physical Sciences
Plastics: The good, the bad and the ugly
Plastics’ demand and consumption is on the increase since 1950s due to their unique properties. Their high use coupled with challenges in end-of-use handling and their inherent resistance to degradation has led to their accumulation in the environment, which is a matter of grave concern. This review presents a general overview of the state of knowledge of the diverse faces of plastics with special reference to...
December 2021
African Journal of Microbiology Research
Notice of Retraction: General steps in the production and establishment of transgenic chicken lines carrying a bacterial lacZ gene expressing ?-galactosidase
The editors of the African Journal of Microbiology Research (AJMR) are retracting the article, “General steps in the production and establishment of transgenic chicken lines carrying a bacterial lacZ gene expressing β-galactosidase” published in 2012 (Vol. 6(20), pp. 4344-4354, 30 May, 2012). This is because the data published were duplicated from a dissertation (submitted to the Graduate...
December 2021
African Journal of Educational Management, Teaching and Entrepreneurship Studies
The education manager in the covid-19 era: Dilemma to responsiveness and continuity of education
This paper discusses the challenges facing the educational manager in the era of Covid-19, which has not only disrupted education activities but also depleted actors of their economic prowess. The paper further examines specific education challenges, including; Syllabi circumvention, remodeled education calendar, declining students’ morality, disengaged staff and students as they diverted in search of...
December 2021
Journal of Ecology and The Natural Environment
Structural characterization of over-exploited forest species: Case of Garcinia kola Heckel (Clusiaceae) in Côte d’Ivoire
The purpose of this study is to define the structural characteristics and spatial distribution of endangered Garcinia kola in Côte d'Ivoire, in order to ensure sustainable management of the species. The study was conducted in two natural growth zones (Affery and Biankouma) of the species and involved 94 trees with a minimum diameter of 10 cm measured at 1.30 m from the ground. The data collection method...
December 2021
African Journal of Pharmacy and Pharmacology
Antimalarial drug utilization pattern amongst staff of three health facilities in Rivers State, Nigeria
The study assessed the level of antimalarial drug utilization amongst Staffers of three Health facilities in Rivers State. It was a cross sectional questionnaire based study. The study assessed the knowledge, attitude and malaria treatment and preventive practices of one hundred and five respondents gotten from amongst health workers at Terabor and Ahoada General Hospitals as well as College of Health Science and...
December 2021
Journal of Clinical Pathology and Forensic Medicine
Postmortem diagnosis of massive gastrointestinal bleeding
Giant peptic ulcers have a poor prognosis and are associated with more frequent bleeding, together with very high morbidity. The prognosis worsens if it also spreads to the duodenum, with probable involvement of adjacent organs such as the pancreas. The most serious complication of these is perforation, this being the first manifestation is up to a third cases. A 62-year-old male patient with a history of high blood...
December 2021
African Journal of Agricultural Research
Suitability analysis for scaling chickpea varieties in Ethiopia using multi-criteria evaluation and geographic information system (GIS)
The land suitability analysis and mapping were carried out using a geographic information system and multi-criteria approach for scaling chickpea (Cicer arietinum L.) varieties in Ethiopia. Therefore, the biophysical variables of climate, topography, and soil were considered for suitability analysis. The environmental factors’ layers of chickpea varieties pixel values were classified and given a rate and ranked....
December 2021
International Journal of Physical Sciences
Solar activities and geomagnetism: Long-term statistical study of magnetics clouds activity day’s occurrence as a function of the phases of solar cycles 11 to 24
This article examines magnetics clouds activity day’s occurrence as a function of the different phases of the solar cycle and the duration of their geoeffectiveness. The study period extends from cycle 11 to cycle 24. Magnetic clouds activity day’s occurrence were identified using pixel diagram from the years 1867 to 2019, that is to say, fourteen (14) solar cycles. The results show that in the study period:...
December 2021
African Journal of Medical and Health Sciences
Assessment of socio-economic impact of COVID-19 pandemic on households: A case study of households in Anambra State, Nigeria
With the spread of the Coronavirus disease in 2019 (COVID-19) affecting all spheres of human endeavors, even households have not been spared. However, impact of the pandemic on households in Nigeria is unclear which necessitated this study which was aimed at assessing the impact of the COVID-19 pandemic on Nigerian households Awka South, Anambra State. An online survey with a descriptive cross-sectional design was...
December 2021
African Journal of Agricultural Research
Determinants of rural households’ livelihood diversification decision: The case of Didessa and Bedelle District, Bunno Bedelle Zone, Oromia Regional State, Ethiopia
Beside its greatest contribution to Ethiopian economy, agricultural sector has been highly affected by climate change. Consequently, masses of people have been left food insecure every year. As an option, rural households have been participating in diversifying their livelihood sources. The present study aims to identify the major factors affecting rural household’s participation in livelihood diversification...
December 2021
African Journal of Oral Health Sciences
Risk factors and complications associated with dental extraction treatment in the Western Region of Cameroon: A cross sectional study
Complications associated to dental extraction remain a concern and can be a source of morbidity. However, adequate management could avoid these complications. The purpose of this study was to assess the risks factors and complications associated with dental extraction in the Western Region of Cameroon. This was a cross sectional study carried out between January 25 to April 30, 2019. Patients 15 years and above were...
December 2021
African Journal of Biotechnology
Effect of foliar application of nitrogen-phosphorus-potassium fertilizers on nutrient uptake and protein content of maize
The effect of foliar application of nitrogen-phosphorus-potassium (NPK) fertilizers on nutritional status and yield of maize (Zea mays L.) were investigated through a study conducted in a zonal agricultural research station of University of Agricultural Sciences, GKVK Bengaluru (India). The experiment was laid out in randomized complete block design. The treatments consisted of two levels of soil application (75 and...
December 2021
Journal of Agricultural Extension and Rural Development
Shaping interaction among improved cowpea’s farming: Do Institutions have a role to play? A case of Oyam district in Uganda
This paper examines the roles played by institutions in shaping the interactions among improved cowpea farmers in Oyam district. A cross sectional research design and qualitative approach was used. Focus Group discussions were held and members were purposely selected. The study found out that the cowpea farmers normally provide and share farm saved seeds preserved from the previous harvest with fellow farmers while...
December 2021
International Journal of Physical Sciences
Theoretical and experimental studies of effective carriers lifetime: Magnetic effects
In this manuscript, we present a study on the effects of magnetic field on charge carrier effective lifetime within the base of a polycrystalline PV solar cell p-n junction. This study is elaborated in two forms as a theoretical study and an experimental study. Indeed, under various magnetic field values, PV solar cell is illuminated by using the light from stroboscopic. From a theoretical approach mainly use the open...
December 2021
Journal of Public Health and Epidemiology
Virological outcome in HIV-1 infected patients: 5-year follow-up experience in Côte d’Ivoire, West Africa
Although viral load (VL) measurement has become the reference tool for monitoring antiretroviral treatment in patients living with HIV, most West African countries do not have it systematically. Long-term virological data are rare. Here, the matter is to describe virological outcomes and resistance patterns at 5 years in HIV-1+ patients and to identify early factors associated with long-term virological outcome. This is...
December 2021
African Journal of Agricultural Research
Inter row spacing and Np fertilizer application rates effect on economics, growth, yield and yield component of mung bean (Vigna radiata L) cultivation at Mirab Abaya, Southern Ethiopia
Mung bean, the most important and short duration pulse crop, grown for grain from tropical to sub-tropical climates is low in productivity and lacks recommended inter-row spacing and NP fertilizer rate for various agro-ecologies. A study was conducted to determine inter-row spacing and NP fertilizer rates for yield and yield components of mung bean at Mirab Abaya. The experiment consisted of three inter-row spacing (15...
December 2021
Educational Research and Reviews
Family support and school-to-work transition: Perceptions and experiences of university graduates in Kampala city, Uganda
This study explored the experiences and implications of transitioning from school to work without family support for university graduates in Uganda. The research was a qualitative exploratory study in Kampala city, Uganda. The data was collected through in-depth individual interviews with university graduates (first-degree graduates). The research findings showed that young men and women, upon graduation, strongly...
Page 8 of 1239, showing 50 records out of 61917 total, starting on record 351, ending on 400
