Articles
Page 2 of 1162, showing 50 records out of 58059 total, starting on record 51, ending on 100
June 2019
Journal of Medicinal Plants Research
Evaluation of active phytochemical constituents linked to the analgesic and anti-inflammatory property of Cassia singueana Del. root bark
Cassia singueana is used in ethnomedicine for the management of pain and other related ailments. This study aimed to investigate the phytochemical constituents of the plant’s root bark linked to the therapeutics claims of its analgesic and anti-inflammatory activities. The plant material was obtained and identified, and its phytochemical fingerprint profile was established using GC-MS technique. The plant’s...
June 2019
Educational Research and Reviews
Misconceptions in ‘Shape of Molecule’: Evidence from 9th grade science students
Students commonly develop alternative ideas about topics in science. According to constructivist view of learning, students’ alternative conceptions and misconceptions about the process of developing new knowledge should be highlighted. Remedy can be undertaken through conceptual change approach. In order to understand what factors causes 9th grade students to make mistakes in various sub concepts of shape of...
June 2019
Educational Research and Reviews
Analyzing effect of teachers' personal empowerment perceptions' to their passion for working by various factors
The aim of this research is to determine the relationship between the elementary, middle and high school teachers’ personal empowerment perception and passion for working. During the research, opinions of 890 teachers’ chosen from different schools and branches with random sampling technique were collected from those working in Malatya province in the 2016-2017 academic year. As a data collection tool,...
June 2019
Educational Research and Reviews
The effect of drama activities on five-year-old children’s social skills
The aim of this study is to investigate the effects of drama activities on the social skills of five-year-old children. In this research, experimental design with pre-test/post-test control group was used. The sample group of the study consisted of 32 kindergarten five-year-old children in Fatih, Istanbul, Turkey in 2017-2018 academic year. After a random selection, 16 children (8 girls and 8 boys), were selected as the...
June 2019
African Journal of Pharmacy and Pharmacology
Sex differences in the neuroprotective effect of insulin against chemically-induced convulsions in mice
Insulin, an important regulator of peripheral metabolism, has been reported to interact with many neurotransmitter systems including those associated with convulsion. The effect of insulin against pentylenetetrazole and strychnine-induced convulsions in mice, as well as possible sex differences, were evaluated in this study. Mice of both sexes weighing between 20 and 25 g were administered insulin intraperitoneally at...
June 2019
African Journal of Pharmacy and Pharmacology
Effect of amodiaquine on the pharmacokinetics of gliclazide in diabetic subjects
The study aims at investigating the effect of amodiaquine on the pharmacokinetic profile of gliclazide. It is a one-way single dose cross-over study in two phases. Six freshly diagnosed diabetic volunteers were used. The subjects acted as their own control, and each phase was preceded by an overnight fast. Phase 1 of the study involved the administration of a single oral dose of 80 mg of gliclazide after an overnight...
June 2019
African Journal of Agricultural Research
Application of GIS in pig production system in Nigeria
This study aimed to identify the pig producers across various administrative regions and to determine the pig production system in Nigeria through an intensive survey of pig farms with the use of Global Positioning System (GPS). Categorization of farms by proportion in Nigeria showed that 81.1% of states had very low (<5) and low (5 to 50) number of pig farms, 8.1% of states had medium (50 to 100) number of pig farms...
June 2019
African Journal of Agricultural Research
Composting coffee pulp with Minjingu phosphate rock improves phosphorus availability for tomato uptake
A glasshouse experiment was conducted to evaluate the effect of composting coffee pulp with phosphate rock on phosphorus (P) availability for plant uptake. Coffee pulps composted with or without phosphate rock and Minjingu phosphate rock applied alone were evaluated as source of P for tomato growing on a Chromic Acrisol. All P sources were applied at varying rates of 0, 20, 40, 60, 80 and 100 mg P kg-1 and all other...
June 2019
African Journal of Agricultural Research
Association mapping for flag leaf thickness in an indica rice population from South China
Flag leaf is the most important source of photosynthate for developing rice grains, and flag leaf thickness is an important morphological trait in rice plant-type breeding programs. In the present study, we carried out association mapping for flag leaf thickness in a local rice population which consisted of 86 cultivars derived from breeding programs and planted in large areas in South China. Phenotyping was conducted...
June 2019
African Journal of Agricultural Research
Genotype and environment interaction effect on yield and yield components in Desi-type Chickpea
[Cicer arietinum (L.)]
Chickpea is the major pulse crop cultivated in Ethiopia. However, its production is constrained due to genotype instability and environmental variability. This research was carried out to examine the magnitude of environmental effect on yield of chickpea genotypes and to investigate the stability and adaptability of genotypes under different agro-ecologies. Twelve genotypes evaluated in randomized complete...
June 2019
International Journal of Physical Sciences
Designing off-grid hybrid energy supply with photovoltaics in Senegal
In Africa, electrification of rural areas are low and off-grid power supply is needed. Often diesel generators are used to provide local electricity supply. However, the tremendous decrease in the costs of photovoltaics provides an attractive option to substitute existing diesel generation or to build up a new electricity supply in those locations, lowering power costs and environmental impact. Photovoltaics (PV) hybrid...
June 2019
International Journal of Physical Sciences
Application of density matrix renormalization group to one-dimensional Hubbard model to study strongly correlated electrons system
In this work, we applied density matrix renormalization group to one-dimensional Hubbard model at five numbers of sweep to solve strongly correlated interacting electrons system, starting from two electrons on two sites up to ten electrons on ten sites at half filling. The results that emerged from the present study is in agreement with that of exact diagonalization, variational and Lanczos solution at the varying...
June 2019
Scientific Research and Essays
Effectiveness of using oils extracts of Peganum harmala and Rhanterium epapposum against Khapra beetle (Coleoptera: Dermestidae) and their chemical compositions
Essential oils extracted from two medicinal plants Peganum harmala and Rhanterium epapposum native to the Arabian Peninsula specially Saudi Arabia, were evaluated for their larvicidal effects and emergence of Khapra beetle (Trogoderma granarium) adults. The oil analyzed by thin layer chromatography, the results of phytochemical analysis indicated that the presence of Alkaloids, flavonoids Triterpenes, Cumarins and...
June 2019
African Journal of Business Management
Involving stakeholders in university hospital performance reporting: The state of the art in Italy
University hospitals (UHs) need to pay attention to diverse stakeholders’ interests when reporting their performance information, to meet different knowledge expectations concerning the activities they have performed and the outcomes they have achieved. In the existing literature, the level of consideration of UH performance reports reserve for a broad variety of stakeholders interested in UH outcomes, each with...
June 2019
African Journal of Business Management
Professional satisfaction of public university instructors in Bangladesh: A case of Rajshahi University
Professional satisfaction commonly termed as job satisfaction or employee satisfaction has been one of the key contents of human resource management, organizational behavior, and industrial psychology. Satisfied employees can be more productive and can have significant contribution to organizational success. High levels of job satisfaction could also be a sign of emotional wellness or mental fitness. Teaching is a noble...
June 2019
African Journal of Business Management
Bushehr University of Medical Sciences physicians: Role of individual, organizational and technical factors affecting knowledge sharing
The main purpose of sharing knowledge is to provide the necessary ground for realization of knowledge management, and then, a transformation of organization knowledge into an effective organizational source. The purpose of this study was to determine the role of individual and organizational technical and cultural factors affecting knowledge sharing among physicians of BUMS, in 2017. This is a descriptive-analytical...
June 2019
African Journal of Agricultural Research
Evaluation of lentil varieties and seedbed types for the management of lentil Fusarium wilt disease (Fusarium oxysporum f. sp. lentis) in central highlands of Ethiopia
An experiment was conducted at Chefe Donsa naturally infested field with Fusarium oxysporum f. sp. lentis in order to evaluate the effect of lentil genotypes and seedbed types as components of integrated management option. A factorial experiment including lentil variety and seedbed type, each at four levels, was carried out in a split-plot design with three replications. The four lentil genotypes were ILL-590...
June 2019
African Journal of Agricultural Research
Assessment of Yield and Yield Related Traits in Durum Wheat (Triticum Turgidum) Genotypes in
Northern Ethiopia
The main objective of this study was to evaluate 21 durum wheat genotypes for grain yield and agronomic traits under rain fed condition in three districts of Axum Agricultural Research Center, namely Hatsebo, Tahtay-Maichew and Ahferom during 2014 cropping season. Completely randomized block design with three replications was conducted for each location. The result of analysis of variance indicated that there was a...
June 2019
African Journal of Agricultural Research
Cowpea (Vigna unguiculata (L.)Walp., Fabaceae) landrace (local farmers’ varieties) diversity and ethnobotany in Southwestern and Eastern parts of Ethiopia
The present research was carried out to identify and document the landrace diversity and ethnobotanical uses of cowpea (Vigna unguiculata (L.) Walp) (Fabaceae) in Southwestern and Eastern Ethiopia. Data were collected through field observations, semi-structured interviews, guided field walk with cowpea farmers and users, and market surveys. Descriptive statistics, preference ranking and informant consensus were employed...
June 2019
African Journal of Biotechnology
Physicochemical properties of rhodanese from the kidney of can rat (Thryonomys swinderianus)
We report the properties of partially purified rhodanese, a cyanide detoxifying enzyme isolated from the kidney of the greater cane rat commonly known as grasscutter (Thryonomys swinderianus). T. swinderianus kidney rhodanese had a specific activity of 1.43 µmole/min/mg protein, a fold of 2.31 and a 55% recovery. The apparent Km values of 0.408 and 0.316 mM were obtained for both sodium thiosulphate (Na2S2O3) and...
June 2019
African Journal of Biotechnology
Characterisation of volatile compounds and flavour attributes of Lablab purpureus bean accessions
The Lablab bean (Lablab purpureus) has potential of being an outstanding resource for human food and animal feed in tropical agricultural systems. The bean is however grossly underutilized due to anti-nutritional factors, which may affect its nutritive value and organoleptic properties. In this study, twenty-four (24) lablab bean accessions were assayed for sensory flavor characteristics and volatile compounds to...
June 2019
Educational Research and Reviews
The predictive power of university students’ self-leadership strategies on their self-efficacy
This study aims to analyse correlations between the self-leadership strategies employed by university students and their self-efficacy and to determine whether or not their self-leadership and self-efficacy differ significantly on the basis of gender. The study is in the model of correlational survey and it uses random sampling method. The study was performed with the voluntary participation of undergraduate students...
June 2019
Educational Research and Reviews
Orthography and punctuation problem in Turkey within the context of the curricula and textbooks
In this study, the orthography and punctuation problem was evaluated within the context of the curricula and textbooks. The data obtained from both sources were assessed by way of document reviews, and consequently, it was seen that the orthography and punctuation topics existed as learning outcomes only in the curricula for the 1st, 2nd, 3rd, 4th and 5th grades. No learning outcomes related to orthographic or...
June 2019
Educational Research and Reviews
Supervision on early intervision practices for teachers of the deaf
The objective of the present study was to examine the early intervention practices of two teachers working with infants with hearing loss and the supervision provided to these teachers to improve their practices. It was designed as a qualitative case study. Data were collected with intervention session video recordings, evaluation meeting audio recordings, session plans, the reflective journals, teacher evaluation forms...
June 2019
Educational Research and Reviews
Participating in a high school debate program and college matriculation and completion: Evidence from the Chicago Debate League
Prior work has demonstrated that debate is associated with academic achievement in high school. Whether debate in high school is predictive of better college outcomes beyond its established relationship with promoting college readiness as indicated by the ACT is unknown. This research examines and evaluates the impact of participating in a high school debate program on college matriculation and completion. Data come...
June 2019
Journal of Medicinal Plants Research
In vitro evaluation of fruit extracts of Annona stenophylla diels and Flacourtia indica for incorporation into formulations for management of cancer
There are many reports which show a positive relationship between free radical damage and diseases such as cancer. Free radicals are formed when humans are exposed to ionizing radiation or during oxidation process in human beings can damage tissues and may potentially lead to development of cancers. Since radiation may be used in the management of cancer, there is need for the development of a radioprotective herbal...
June 2019
Journal of Medicinal Plants Research
Chemical fingerprint of Bacopa monnieri L. and Rosmarinus officinalis L. and their neuroprotective activity against Alzheimer's disease in rat model’s putative modulation via cholinergic and
monoaminergic pathways
Alzheimer’s disease is characterized by progressive degeneration of cortical and hippocampal neurons. This study aims to characterize the metabolic profiles of the hydro-ethanolic extracts of Bacopa monnieri L. (BM) and Rosmarinus officinalis L. (RO) cultivated in Egypt via UPLC–ESI/MS analyses and reveal their possible mechanism of the prophylactic effect(s) on neuro-degeneration in rat model of...
June 2019
Journal of Medicinal Plants Research
Evaluation of the in vivo antiplasmodial activity of ethanol leaf extract and fractions of Jatropha gossypifolia in Plasmodium berghei infected mice
The study evaluates the in vivo antiplasmodial activity of ethanol leaf extract and fractions of Jatropha gossypifolia in Plasmodium berghei infected mice. Phytochemical, physicochemical analyses, median lethal dose (LD50), effects on biochemical parameter were evaluated and the schizonticidal effects during early and established infections were investigated. The extract (50-200 mg/kg) was screened for antimalarial...
June 2019
African Journal of Pharmacy and Pharmacology
Nanotechnology: A non-invasive diagnosis and therapeutic tool for brain disorders
Presently, nanotechnology appears as a powerful and innovative tool in the medical field. It has various advantages over the conventional drug therapy such as therapeutic specificity, has less side effects, reduces dose of drug, has more precise treatment and can access the inaccessible areas of the body like brain, tumor cells, etc. The human brain is the most complicated part of the body which is highly protected with...
June 2019
African Journal of Pharmacy and Pharmacology
Myorelaxant effect of aqueous root bark extract of Carissa edulis (Forssk.) Vahl. is mediated through activation of nitric oxide synthase
Many patients in Africa often utilize herbal medicine for the management of hyperactive gut disorders such as diarrhea and abdominal colic. There is therefore a need to scientifically evaluate efficacy of this herbal remedies. This study investigated the myorelaxant effect of Carissa edulis (Forssk.) Vahl and its possible mechanism of action using isolated rabbit jejunum preparations. Pieces of jejunum were isolated...
June 2019
African Journal of Microbiology Research
Airborne bacterial diversity and antibiotic resistance patterns in operating theatre and paediatric wards in Botswana hospitals
There is presently no information on the occurrence, abundance and diversity of airborne bacteria in Botswana hospitals. There is also growing concern in the global spread of antibiotic resistant bacteria that continue to emerge and pose serious challenge to human health. This study was aimed at determining the occurrence, relative abundance and diversity of airborne bacterial species and their antibiotic resistance...
June 2019
African Journal of Microbiology Research
Antibacterial, muscle relaxant, and hypnotic effects of seeds of Peganum harmala on mice
Peganum harmala seed extract has been frequently reported to possess antibacterial potential through in vivo studies. P. harmala L. (Zygophyllaceae) is one of the most famous medicinal plants used in traditional medicine of Iraq. The harmaline, harmalol and harmine exerted many pharmacodynemic effects on the central nervous system: stimulation and depression depending on the dose. P. harmala indicates a great variety of...
June 2019
African Journal of Agricultural Research
Effects of fungicide application and different nitrogen fertilizer levels on yield components of three varieties of common bean Phaseolus vulgaris L.
In Cameroon, common bean is produced and highly consumed as a source of protein and means of generating income by small farm holders. However, diseases like angular leaf spot caused by Phaeoisariopsis griseola (Sacc), poor agronomic practices and low soil fertility are negatively impacting the production of the crop. A field experiment was conducted under natural conditions in the University of Dschang during the 2017...
June 2019
African Journal of Agricultural Research
Exploring the induction of doubled haploids in cassava through gynogenesis
Production and use of double haploids is important for attainment of systematic genetic gains, and indeed several plant breeding programmes have benefited from it. Gynogenesis, the in vitro culture of unfertilized ovules and/or embryos has specifically been exploited in several economically important crops but not cassava. In this study, we examined possibilities of generating doubled haploids (DH) in cassava...
June 2019
African Journal of Agricultural Research
Gas exchange in upland cotton cultivars under water deficit strategies
Aiming to evaluate the gas exchange of upland cotton cultivars cultivated in the Brazilian semiarid, subject to water deficit periods on the phenological stages, an experiment was carried out at the Campina Grande Federal University, Pombal county campus, Paraíba State, Brazil, between June and December 2015. Treatments were formed from a split-plot arrangement, in which the plots were 6 water deficit periods (P)...
June 2019
African Journal of Agricultural Research
Fiber quality in upland cotton cultivars under water deficit strategies
An evaluation was made of upland cotton cultivar fiber quality, when subjected to water deficit periods, on the phenological stages. The experiment was carried out at the Campina Grande Federal University, Pombal county Campus, Paraíba State, Brazil, between June and December 2015. Treatments were formed using a split-plot arrangement, in which the plots were 6 water deficit periods (P) (P1 = No deficit; P2 =...
June 2019
African Journal of Biotechnology
Bioremediation of petroleum contaminated soils by lipopeptide producing Bacillus subtilis SE1
Hydrocarbons released into ecosystems have led to environmental pollution and generated a serious threat to human health. Bioremediation is an effective method to break down hazardous hydrophobic environmental contaminants with avoiding economic and technical disadvantages. This study aimed to evaluate the efficiency of Bacillus subtilis SE1, a lipopeptide biosurfactant producer isolated from a petrochemical...
June 2019
African Journal of Biotechnology
Nano Selenium: Reduction of severe hazards of Atrazine and promotion of changes in growth and gene expression patterns on Vicia faba seedlings
Atrazine is a widely used herbicide on many crops and is considered one of water pollutant with approved biological hazards on plants, animals and human. Vicia faba seedlings as a biological system, is used to investigate the genotoxicity of Atrazine. Also, Nano selenium (N-Se), a Nano particle with reactive oxygen species scavenging activity was applied to reduce the genotoxicity of Atrazine. Atrazine treatment at...
May 2019
International Journal of Livestock Production
Some internal and external egg quality characteristics of local and exotic chickens reared in Yirgalem and Hawassa towns, Ethiopia
Analyzing eggs quality is so important for both consumers and for coming new chicks. Total of 300 eggs (100 eggs from each native, Sasso and Bovans brown) chicken were collected during winter of 2017 to evaluate some egg quality parameters of chickens reared at Yirgalem and Hawassa towns of Southern Ethiopia. The eggs were purchased from the householders and each egg was carefully broken on a glass sheet, and was...
May 2019
International Journal of Livestock Production
Socio-economic perception of snail meat consumption in Fako division, south-west region Cameroon
Cameroon south-west region offers favorable climatic conditions for survival of land snails whose meat is known for their nutritional benefits. Besides, conventional livestock (beef, chicken, etc.) cannot satisfy the high demand in Cameroon. Hence, snail meat could be suitable alternative source of protein. Therefore, this article investigated the perception and identified the main determinants of land snail meat...
May 2019
African Journal of Environmental Science and Technology
Environmental assessment of tropical African mahogany (Khaya)
In this study, life cycle assessment (LCIA) was used for the assessment and evaluation of the environmental performance of the Khaya lumber manufactured by three firms in Ghana. The work mainly aims to assess all possible effects to the environment, measure the carbon footprint for Ghana Khaya lumber and offer an Environmental Product Declaration (EPD) for Ghana Khaya lumber. The results show that the average...
May 2019
African Journal of Environmental Science and Technology
Assessment of drinking water quality at Dodowa in the Dangbe West district of the Greater-Accra
region, Ghana
Dodowa serves as a major peri-urban community close to the Accra Metropolis with increasing population, urbanization and settlements. Lack of access to basic infrastructural facilities including water and sanitation has hampered the development of the community. Dodowa has irregular access to pipe-borne water therefore the community resorts to other means of getting potable water. It is against this background that this...
May 2019
African Journal of Environmental Science and Technology
An assessment of the contribution of fluvial sediment discharge to coastal stability: A case study of Western Region of Ghana
Fluvial sediment discharge to coastal area contributes to the stability of the coast. Deposition of fluvial sediment discharge is an important source of beach nourishment, nutrient for aquatic ecology and habitats. However, human development and interventions on rivers in the form of dams and flood alleviation schemes tend to reduce fluvial sediment supply to the coast, thus impacting on coastal stability and...
May 2019
African Journal of Environmental Science and Technology
Innovative pathways for enhancing climate change and variability resilience among agro-pastoral communities in semi-arid areas of Kiteto and Kilindi Districts, Tanzania
Climate change and variability threatens food security globally making life uncertain mostly for agro-pastoral communities in semi-arid areas. This has necessitated exploration of designed pathways with potentials to increase resilience among agro-pastoralists. This work investigates agro-pastoralists’ innovative pathways for enhancing resilience to the impacts of climate change and variability in Kiteto and...
May 2019
International Journal of Livestock Production
‘You should be slaughtered!’ Experiences of criticism/hate speech, motives and strategies among German-speaking livestock farmers using social media
Livestock farmers are advised to engage in direct dialogue with consumers. However, attempts to communicate in this way e.g. by farmers using social media have received little academic attention. The present article, based on an online questionnaire conducted in the summer of 2018, provides an explorative insight into the motives, strategies and experiences of criticism of German-speaking livestock farmers with a...
May 2019
Journal of Development and Agricultural Economics
Value chain analysis of fruits: The case of mango and avocado producing smallholder farmers in
Gurage Zone, Ethiopia
The study was aimed to analyze avocado and mango value chains actors and identify factors that determine avocado and mango market supply in the selected area of Gurage zone. A total of 259 avocado and mango producers were selected through three-stage sampling technique and 151 traders from different level were used to collect primary data using questionnaire and semi-structured interview. Descriptive and econometrics...
May 2019
Journal of Development and Agricultural Economics
Determinants of intensity of uptake of alternative pest control methods: A case of small- scale tomato farmers in Kenya
Inappropriate use of chemical pesticide in horticultural production is an emerging problem causing undesirable human health and environmental effects in developing countries including Kenya. Thus, objective of this study is to evaluate the determinants of the intensity of uptake of alternative pest control methods among small-scale tomato farmers in Nakuru County, Kenya. Multistage sampling procedure was used to select...
May 2019
Journal of Dentistry and Oral Hygiene
Interdisciplinary treatment approaches for cleft lip and palate patients to obtain esthetic and functional results
The aim of this study is to present the importance of interdisciplinary treatment approaches for the patients with clefts. In this study, the treatment of four patients with cleft lip and palate were presented. After the completion of fixed orthodontic treatment, proper overjet and overbite relationships were achieved and to obtain the esthetic and functional results, two of the patients had prosthodontic treatment (one...
May 2019
Journal of Engineering and Technology Research
Application of plasma technology in aerospace vehicles: A review
The galactic and solar radiation effects on astronauts in space during manned-space missions is one of the issues that scientists are dealing with to come up with a reasonable solution to overcome this disaster. Furthermore, in space missions to Mars, Titan, and beyond them, a powerful propulsion system is required. Recently, with the enhancement of technology in plasma generation, scientists are trying to design and...
May 2019
International Journal of Water Resources and Environmental Engineering
Prototype of a control system for trickle irrigation systems considering distributors’ flow rate variation
A prototype of a real-time closed loop automatic control system has been successfully developed to suit trickle irrigation systems management. The control system was designed to manage the irrigation system based on collecting data through soil moisture sensors located at three different locations acting each third of the lateral to put the effect of emitters’ flow rate variation along laterals on soil moisture...
Page 2 of 1162, showing 50 records out of 58059 total, starting on record 51, ending on 100
