2-Amino-4,6-dimethyl­pyrimidine–anthranilic acid (1/1)

In the title 1:1 adduct, C6H9N3·C7H7NO2, the crystal structure is stabilized by hydrogen bonds involving two different R 2 2(8) motifs. One of them is formed by the inter­action of 2-amino-4,6-dimethyl­pyrimidine (AMPY) with the carboxyl group of anthranilic acid (AA) through N—H⋯O and O—H⋯N hydrogen bonds, whereas the other is formed through the inter­action of two centrosymmetrically related pyrimidines involving N—H⋯N hydrogen bonds. These two combined motifs form a heterotetra­mer. The heterotetra­mer sheets are stacked into three-dimensional network

Ideological Positioning in Presidential Inaugural Addresses: A Comparative Critical Discourse Analysis of President Agyekum Kufour and President John Evans Ata Mills

Scholars have become interested in analysing the language used in the inaugural speeches of African presidents, likely because of the rise of multi-party democracy in a number of African countries. But there have not been many studies done on the ideological analysis of Presidential Inaugural Addresses (PIA), especially for African heads of state. Studies that have already been conducted did not focus on minor indications of ideological orientations and stances presented by these political figures in their political speeches. In this paper, we examined two Presidential Inaugural Addresses (PIAs) delivered by John Agyekum Kufuor and John Evans Atta Mills who were Presidents of the Republic of Ghana. The objective is to outline the covertly expressed ideological positions used in the selected PIAs and to ascertain possible areas of ideological divergence and convergence between the two opposing political leaders. We used a CDA approach to discourse analysis, which is predicated on Fairclough's assumption that discourse analysis aims to investigate the causal relationships between discursive practices and broader social and cultural structures, relations, and processes. More precisely, this study sought to uncover covert ideology that is 'hidden' inside the texts. The study discovered that Kufuor was more direct in his language, promoting his capitalist ideology, criticizing the previous administration, and also having the least self-criticism, whereas Mills was less direct, espoused an ideology of socialism, was less critical of others, and sounded more conciliatory

Implementation of a GPS tracking system and a remote control interface for a mini-vehicle

Capstone Project submitted to the Department of Engineering, Ashesi University in partial fulfillment of the requirements for the award of Bachelor of Science degree in Computer Engineering, April 2019Car theft has become prominent all over Ghana in recent years. Despite its growing prominence throughout the country, measures to promptly recover stolen vehicles have often proved tedious and futile. To tackle this problem, this project aims to develop a remote control system and a model of a GPS tracking system which would together help vehicle owners swiftly recover their vehicles should the need arise. This was achieved by developing a mobile application to serve as an interface for remote control circuit integrated with a mini-vehicle. The developed interface provides an effective means of controlling the vehicle. To further improve upon this project, a WIFI module can be used to increase the range of control, while an ultrasonic sensor can be integrated into the vehicle to help avoid obstacles when controlling the vehicle remotely.Ashesi Universit

Dynamic analysis of Footbridge to Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt)

This research project presents a dynamic structural analysis of footbridges as per Eurocode (case study on Leventis Footbridge, Aba Road, Port Harcourt). The footbridge was simulated using a commercial finite element software; Midas FEA. The crowd-footbridge is modelled as a structural oscillator to which some external load is applied. Therefore, the crowd is taken as an imposed load rather than as a dynamical system. The eigenvalue analysis was carried out to obtain the natural frequency ⍵n, which is obtained as the eigenvalue of the characteristic equation and the corresponding mode shape is obtained as the eigenvector of the characteristic equation. The values are compared to Eurocode specification for comfort criteria on footbridges. Time history analysis was also carried out. This method was used to construct time histories of variables, such as displacement and acceleration, by calculating the response at the end of a succession of very small time steps. The peak deck acceleration is obtained and compared to Eurocode specification for comfort criteria on footbridges. From the time history graph, it was observed that the maximum acceleration of the footbridge is 0.56m/s2 which is greater than the value stated in the Eurocode standard specification of 0.5m/s2 for maximum comfort. This implies that the footbridge acceleration obtained is not satisfactory and that some measures need to be taken in order to remediate this effect and control the vibrations. Some measures to reduce vibration are recommended

Qualitative and Quantitave Evaluation of the Phytochemicals in Dry, Wet and Oil Extracts of the Leaf of Morinda lucida

This study was carried out to assess the quality and quantity of phytochemicals present in the dry, wet and oil of the leaves of Morinda lucida using standard methods. The phytochemicals detected were flavonoids, cardiac glycoside, tannins, saponin, terpenoids and steroids. The quantitative analyses showed that oil extract had the highest total phenolics content (TPC: 2.11 mg GEA/g), total flavonoids content (TFC: 10.21 mg QE/g), total saponins content (TSC: 14.95 mg DE/100g) and Total tannins content (TTC: 1.09 mg GAE/g) followed by dry leaf extract (TPC: 1.34 mg GEA/g; TFC: 5.18 mg QE/g; TSC: 10.24 mg DE/100g; and TTC: 0.55 mg GAE/g) and the least was recorded for the wet leaf extract (TPC: 0.45 mg GEA/g; TFC: 2.61 mg QE/g; TSC: 7.19 mg DE/100g; and TTC: 0.37 mg GAE/g). The overall results showed that the oil extract of a Morinda lucida leaf is rich in phytochemicals than dry and wet leaf extracts and any analyses should be done using the oil. Keywords: Phytochemicals, leaf, Morinda lucida, dry, wet, oi

Phytochemical Evaluation of Dry, Wet and Oil of Leaf of Annona muricata for Medicinal Activities

Qualitative and quantitative phytochemical analyses were carried out on the dry, wet and oil of the leaves of Annona muricata using standard methods. The phytochemicals detected in the aqueous extracts of dry, wet and oil of the leaf were flavonoids, cardiac glycoside, tannins, saponin, terpenoids and steroids. The result of the quantitative analyses showed that oil extract had the highest total phenolics content (TPC: 3.09 mg GEA/g), total flavonoids content (TFC: 16.67 mg QE/g), total saponins content (TSC: 16.86 mg DE/100g) and Total tannins content (TTC: 1.13 mg GAE/g) followed by dry leaf extract (TPC: 1.66 mg GEA/g; TFC: 7.067 mg QE/g; TSC: 14.55 mg DE/100g; and TTC: 0.78 mg GAE/g) and the least was recorded for the wet leaf extract (TPC: 0.83 mg GEA/g; TFC: 3.92 mg QE/g; TSC: 12.07 mg DE/100g; and TTC: 0.44 mg GAE/g). The findings indicate that an Annona muricata leaf is a potential source of phytomedicine with the oil rich in phytochemicals, than dry and wet leaf extracts and any other biochemical analyses should be done using the oil. Keywords: Phytochemicals, leaf, Annona muricata, dry, wet, oi

Structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab

© 2018 by the authors; licensee Growing Science, Canada. This paper presents a study on the structural performance of a modified shear-head assembly for edge steel column embedded in reinforced concrete slab. The structural performance was investigated in terms of punching shear capacity of the reinforced concrete flat slab. The study consisted of a laboratory punching shear test on the contra-flexure bound slab of dimension 1060mm × 1250mm by 130mm thick in a reactant test frame using a 500kN load cell. Results of the experimental study was validated using finite element based numerical method. Both experimental and numerical results show that increase in tensile strength of concrete, increases punching shear capacity of the connection. It was also observed that punching shear failure of the connection depended largely on concrete shear strength. This study has also revealed that punching shear occurs when concrete shear strength is reached, irrespective of the robustness of the shearhead connection

Perceptions of Students on Environmental Challenge Issues

The purpose of this study was to investigate student’s perception of environmental challenge issues and its implication for science education. A standardized ROSE (Relevance of Science Education) survey questionnaire related to environment on 4-Point Likert-type scale was administered to 500 form three students of Sekondi-Takoradi Metropolitan Authority (S.T.M.A) Senior High Schools. The data were subjected to descriptive statistical analyses and an independent sample 2-tailed t-test was used to explore the statistical significance at p ? 0.05.  The findings revealed that although young people were overwhelmingly optimistic about the future, environmental issues are clearly of concern to them.             The results also revealed that students in S.T.M.A. believed that they had a role to play in protecting the environment. The major findings of the study were that most boys and girls in this study strongly agreed that learning about the environmental challenge issues would prepare them for the future and that people should care more about the protection of the environment. They also agreed that something can be done to curtail the drastic alteration of the environment. Both boys and girls agreed that science and technology can solve environmental problems. The responses to this statement appear to show that the respondents have a high level of confidence in the ability of science and technology to solve environmental problems. They disagreed with the statement that threats to the environment were not each and everyone’s business and also disagreed that environmental problems should be left to the expert as can be seen from the low agreement level to both statements. There was a significant difference between boys and girls views on I know the earth is in trouble but don’t really care with a p-value of 0.031.  Keywords: Environment, challenge, management, education, eart

Comparison of the Outcomes of Manual Small Incision Cataract Surgery (MSICS) and Phacoemulsification (PHACO) in Ghana

Background: The growing middle-class population of Ghana has seen more people being employed in visually demanding occupations  and hence there is an increased desire for quality post-cataract surgical visual outcomes. This study aimed at comparing the outcomes of manual small incision cataract surgery (MSICS) and phacoemulsification (PHACO) among Ghanaians. Methods: This was a retrospective cross-sectional study in which records of patients who underwent MSCIS or phacoemulsification by the same surgeon were reviewed. Results: Medical records of 248 eyes were reviewed, out of which 132 underwent PHACO and 116 had MSICS. A significant number of the  PHACO group had good (6/6–6/18) uncorrected visual acuity (UCVA) compared to the MSICS group at 1–2 weeks follow-up (p = 0.003) and 4–6 weeks follow-up (p = 0.002). MSICS resulted in a higher total astigmatic change compared to PHACO (p < 0.001). The PHACO grouphad a higher number of postoperative complications compared with the MSICS group (p <0.001). Postoperative borderline and poor  uncorrected visual acuity were associated with age, total astigmatic change, and postoperative complications. Conclusion: The postoperative UCVA outcomes at 4–6 weeks’ follow-up indicates that PHACO resulted in noticeably less spectacle dependency when compared to MSICS