Hierarchical Coupling of Molecular Dynamics and Micromechanics to Predict the Elastic Properties of Three-Phase and Four-Phase Silicon Carbide Composites

The results obtained from previously conducted molecular dynamics analysis of silicon carbide (-SiC (6H, 4H, & 2H-SiC), -SiC (3C SiC)), silicon and boron nitride, were utilized as inputs in the MAC/GMC micromechanics software to model and evaluate the elastic properties of three-phase SiC/BN/SiC and four-phase SiC/BN/Si/SiC composites. This method of analysis eliminates the need for back-calculation of the apparent properties of the base constituents from the measured ceramic matrix composites properties. The multiscale models are validated against the available data in literature

Challenges Facing Implementation of Inclusive Education in Public Primary Schools in Nyeri Town, Nyeri County, Kenya

The thrust of this study was to examine the challenges facing the implementation of inclusive education programme in public primary schools in Nyeri town, Nyeri County. The study had three fold objectives, namely(i) to find out the status of implementation of inclusive education in Nyeri town, Nyeri county;(ii)To analyze the factors hindering the implementation of the inclusion process for all the school-going-age children and, (iii) to establish the plausible  solutions to the challenges facing  implementation  of special needs education curriculum. It was premised on the classical liberal theory of equal opportunities advanced by Sherman and Wood (1982). A descriptive survey research design was utilized in Nyeri County, Kenya. The study employed a stratified random sampling technique to draw 80 respondents comprising 12 headteachers, 60 teachers, and 8 education officials in the study locale. The main research instruments used were questionnaires and observation checklists. The major findings were that, first, physical and critical teaching learning resources were either inadequate or were quite dilapidated. Secondly, there were inadequate specialized teachers to handle the special needs education curriculum. Third, there were several socio-economic and cultural variables that constraints effective teaching and learning in most sampled schools .It was  recommended  that since  the named constraints were negatively affecting access and quality of education Nyeri County, the Government of Kenya through the Ministry of education should put in place adequate and appropriate physical and human resources to enhance the implementation of SNE not only in the  in the study locale but all other areas experiencing  similar  constraints.[252  words]. Keywords: Physical resources, teaching learning resources, special needs education, Nyeri County, Keny

Effects of a Carbendazim-Mancozeb Fungicidal Mixture on Soil Microbial Populations and Some Enzyme Activities in Soil

The effects of a Carbendazim-Mancozeb fungicidal mixture on microbial populations and some enzyme activities of three selected soils of Kwara State, Nigeria were studied. The soil dilution method was used to isolate bacteria, fungi, actinomycetes and some functional microbial groups from treated soils. Cultivation and enumeration of the soil microorganisms were made on different selective media. Assays for cellulases and pectinases in the treated soils were carried out. The populations of actinomycetes,bacteria and fungi were reduced significantly by the application of the fungicide. The fungicide applied at a concentration of 2.34mg/kg soil had a greater (p < 0.05) inhibitory effect than the recommended concentration of 1.67mg/kg soil. The populations of nitrogen fixers nitrifying bacteria and cellulolytic organisms were also significantly (p < 0.05.) reduced at the two concentrations. The fungicidal mixture equally lowered the cellulose and pectinase enzyme activities in soil significantly, with a return to normalcy by 60 days after treatment. A re-establishment of the soil microbial populations was observed by 21 days after treatment. It was concluded that the use of the Carbendazim-Mancozeb mixture should be with caution since it reduced the populations of ecologically important non-target organisms and that the recommended concentration should be adhered to

Hatchability and survival of H. longifilis fertilized at varying latencies

In determining the optimum latency period of H. longifilis, of which the hatchability and higher Survival percentage were used as a determining factors to determine the optimum latency period of H. longifilis. The result from these varying latencies period shows that the best latency periods at the ambient temperature of 26degreesC, that support mass production and higher survival of H longifilis ranges between 15-19 hours. There was low or zero hatchability from the egg stripped early and the one stripped late

Synthesis, Characterization and Antimicrobial Study Of Mixed Isoniazid-Trimethoprim Metal Drug Complexes

The Mn2+, Fe2+, Cu2+, Co2+, Zn2+, Cd2+ complexes of mixed  of Trimethoprim- Isoniazid were synthesized. The complexes were characterized using solubility, melting point, conductivity measurement and infrared spectroscopy.Trimethoprim complexes of coordination of the metal to the ligands is through the nitrogen of the pyrimidine group and coordination through the nitrogen of the amine group. The antimicrobial activity of the complexes were carried out against Staphylococcus aureus, Pseudomonas aureginosa, Klebsiella pneumonia, Escherichia coli. The results show that the complexes were more active  than their ligands. Keywords: Trimethoprim, Isoniazid, synthesis, complexes, characterized, antimicrobial ligands metal

Youths and cyber insecurity in Nigeria: The role of religion in mitigating against the yahoo yahoo phenomenon

It is no news that countries all over the world are faced with one challenge or the other. Outstanding among all is the challenge of insecurity of lives and properties. In Nigeria, there is the scourge of internet fraudsters known as Yahoo Yahoo, which have swindled many unsuspecting victims their hard-earned resources. Interestingly, the teaming youth population are the major players when it comes to this societal menace. Despite various efforts being put in place by the government to forestall the activities of these fraudsters, the propagators have sought other avenues to continue to be relevant in their nefarious acts. Thus, using questionnaire and in-depth interviews to gather its data, the study traced the trend that led to the engagement of youths‘ in Yahoo Yahoo. It analysed the effect of the practice of Yahoo Yahoo. It also examined the major religions (Indigenous religion, Islam, and Christianity) in the country and the roles they play in mitigating against the Yahoo Yahoo phenomenon in the country

Performance of Glass and Steel Slag Mixtures as a Partial Replacement for Fine Aggregate in Asphalt Concrete

Solid waste management is a significant challenge  particularly in developing countries for example Nigeria. The waste disposal technique is inadequate as negative effects from improper solid waste dumping can be easily visible in the environment. Recycling and reuse of wasteas aggregate in asphalt production may be an economic way to reduce these problems. This research evaluates the viability of crushed waste glass combined with steel slag (GSS) as fine aggregate in asphalt wearing courses. The Marshall mix method was used in production and evaluation of samples. GSS mixtures in the ratio 70:30 (steel slag: glass) were substituted for fine aggregate at varying percentages of 0 to 50 %. This mix ratio was adopted so that the glass content does not exceed 10%.Five samples of GSS content   (10%, 20%, 30%, 40%and 50%) were prepared and their Marsha lstability,Voids in Mineral Aggregates, Voids filled with Bitumen and bulk density were evaluated and compared to nominal asphalt mix. While a 10% GSS replacement in modified asphalt resulted in a greater peak stability value of 16.21 kN compared to the standard mix peak stability value of 12.68kN. The 20% GSS replacement resulted in a lower flow value and a significantly higher Marshall quotient of 5.11KN/MM was recorded at 20% replacement, making it preferable. As a result, a 20% replacement is advised for heavily trafficked highways, whereas up to 30% replacement is permissible on lightly traveled roads. &nbsp

Fearless: The Next Wave of Insurgents

As we close out on another school year, the Surge staff is looking back on an awesome semester and preparing for a new year with new leadership. Katie Patterson ’15, Rashida Aluko-Roberts ’15,Steph Adamczak ’15, and Kathryn Bucolo ’14 are fearlessly taking the reigns and will continue bringing thought-provoking, challenging, and creative articles each week to Surge, and we can’t wait to see what they will do! [excerpt

Comparative effects of Varying Rates of Moringa Leaf, Poultry Manure and NPK Fertilizer on the Growth, Yield and Quality of Okra (Abelmoschusesculentus L. Moench)

The fertilizer management practices have not ensure the desired improvement in yield for okra (Abelmoschusesculentus L. Moench) due to differences in fertilizer types. The search continues for nutrient sources that would provide adequate nutrition for the crop on the season. A pot experiment was carried out at the Teaching and Research Farm, Ekiti State University, Ado Ekiti, Nigeria to evaluate the growth and fruit yield responses of okra (Abelmoschusesculentus L. Moench) to the application of air-dried milled moringa leaf (MML), poultry manure (PM) and NPK fertilizer. The MML was applied at 400, 800, and 1200 kg/ha; NPK 15-15-15 at 250 kg/ha and PM at 10 t/ha separately and in all possible combinations in completely randomized design in three replicates. The parameters measured were plant height, stem girth, number of leaves, leaf area, number of fruits and fruit weight. The single treatments differed significantly (P = 0.05) with the combinations of the treatments giving better performance. The 800 kg/ha MML + PM treatment gave the tallest plants (103.33 cm) and followed by single application of PM (102.33 cm). The application of 400 kg/ha MML + PM + NPK produced the highest number of fruits but 800 kg/ha MML + PM + NPK gave the highest fresh fruit (42.70 g) and dry fruit (20.50 g) weight. 800 kg/ha gave best growth performance among MML but 1200 kg/ha gave best yield. This suggests that MML can be used as source of nutrients to grow okra

Traditional suburethral sling operations for urinary incontinence in women

Funding Information: We are grateful to Adrian Grant, Jonathan Cook, Aldemar Araujo Castro, and several anonymous peer-referees for assistance and valuable comments on this and previous versions of the review. Sheila Wallace provided support for each version of the review as well as for this update and in the classification and identification of new studies. Fiona Stewart assisted with rewriting the effects of interventions section, conversion of incontinence to continence outcomes, and related changes in 'Summary of findings' tables. The review was originally conceived and conducted by Carlos CB Bezerra and Homero Bruschini. An earlier version of this review was completed as part of a project to add brief economic commentaries to Cochrane Incontinence's Reviews on surgery for urinary incontinence in women (Dean 2017). This project was supported by the National Institute for Health Research (NIHR) via the Cochrane Review Incentive Scheme 2016.Peer reviewedPublisher PD