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Samlafo, B.V (2015). Effects of Dietary Selenium on Mercury Toxicity, using Human Hair and Nail Samples as Bioindicators: A Case Study among Residents of Wassa West District of Ghana. Knowledge of Research, 2,
Abstract
This study evaluated the Selenium-to-mercury (Se:Hg) molar ratio model, using human hair and nail as bioindicators, in contrast to the traditional model of measuring mercury alone as index of mercury (Hg) exposure. Fifty each of hair and nail samples collected from volunteers were analysed for Hg and Selenium (Se). Absolute levels of Hg in hair ranged from 1.65 μg/g to 20.46 μg/g with a mean value of 4.64 μg/g.However, ideal levels of Hg in hair is 0.3-0.4 μg/g. Absolute Se levels in hair ranged from 0.5 μg/g to 1.53 μg/g with a mean value of 0.94 μg/g. Ideal Se levels in hair is 1.2 μg/g. Molar concentrations of Hg in hair ranged from 8.23 nM to 101.10 nM with a mean value of 23.09 nM, while molar concentrations of Se in hair ranged from 6.33nM to 19.38 nM with a mean value of 12.0 nM.Absolute Hg in nails ranged from 0.97 μg/g to 31.94 μg/g with a mean value of 10.29 μg/g. Observed Se levels ranged from 0.52 μg/g to 0.85 μg/g with a mean value of 0.70 μg/g. Molar concentrations of Hg in nails ranged from 4.84 nM to 159.23 nM with a mean of 51.32 nM. Molar concentrations of Se in nails ranged from 6.59nM to 10.76 nM with a mean value of 8.94 nM.Based on traditional model of measuring Hg in hair alone, all the residents were exposed to mercury. However, from the Se:Hg molar ratio model, 62% of the residents were exposed to Hg using hair, while 92% were exposed to Hg using nail samples. The precision and the accuracy of the analytical techniques were assessed by simultaneous activation of certified standard human hair reference material GBW 09101. The values obtained compared strongly with the certified values as Pearson’s correlation coefficient was + 0.99 for the two methods.The measurement precision as specified by the relative standard deviation was within ±0.6%.The experimental values were within ±4% of the certified values. Keywords: Hair, Nail, Interaction, Mercury, Selenium, Mining, Molar ratio, Bioindicator
This study evaluated the Selenium-to-mercury (Se:Hg) molar ratio model, using human hair and nail as bioindicators, in contrast to the traditional model of measuring mercury alone as index of mercury (Hg) exposure. Fifty each of hair and nail samples collected from volunteers were analysed for Hg and Selenium (Se). Absolute levels of Hg in hair ranged from 1.65 μg/g to 20.46 μg/g with a mean value of 4.64 μg/g.However, ideal levels of Hg in hair is 0.3-0.4 μg/g. Absolute Se levels in hair ranged from 0.5 μg/g to 1.53 μg/g with a mean value of 0.94 μg/g. Ideal Se levels in hair is 1.2 μg/g. Molar concentrations of Hg in hair ranged from 8.23 nM to 101.10 nM with a mean value of 23.09 nM, while molar concentrations of Se in hair ranged from 6.33nM to 19.38 nM with a mean value of 12.0 nM.Absolute Hg in nails ranged from 0.97 μg/g to 31.94 μg/g with a mean value of 10.29 μg/g. Observed Se levels ranged from 0.52 μg/g to 0.85 μg/g with a mean value of 0.70 μg/g. Molar concentrations of Hg in nails ranged from 4.84 nM to 159.23 nM with a mean of 51.32 nM. Molar concentrations of Se in nails ranged from 6.59nM to 10.76 nM with a mean value of 8.94 nM.Based on traditional model of measuring Hg in hair alone, all the residents were exposed to mercury. However, from the Se:Hg molar ratio model, 62% of the residents were exposed to Hg using hair, while 92% were exposed to Hg using nail samples. The precision and the accuracy of the analytical techniques were assessed by simultaneous activation of certified standard human hair reference material GBW 09101. The values obtained compared strongly with the certified values as Pearson’s correlation coefficient was + 0.99 for the two methods.The measurement precision as specified by the relative standard deviation was within ±0.6%.The experimental values were within ±4% of the certified values. Keywords: Hair, Nail, Interaction, Mercury, Selenium, Mining, Molar ratio, Bioindicator
Faculty of Science EducationDec 14, 2015
Forster, P., (2014). Clothing and Textiles.
Abstract
Faculty of Science EducationOct 15, 2015
Hanson, R., Bobobee, L. H., Twumasi, K. A., & Antwi, V. (2015). Designing micro chemistry experimentation for teacher trainees in a university. European Journal of Research and Reflection in Educational Sciences, 3,
Abstract
Micro chemistry experimentation has come to reduce the usual traditional experimentation through miniature activities. In addition it has reduced activity time and the cost of resources significantly and yet provided personal hands-on experiences for learners. This study presents the design of micro chemistry experimentation for some quantitative and qualitative inorganic chemistry topics for first year undergraduate teacher trainees as well as to introduce a motivating way to teach and conduct chemistry activities. It basically set out to explore the designed low-cost practical approach that could contribute to improved laboratory practice in Ghana, in view of resource, time, and space constraints in a teaching institution. Overall findings showed that the micro chemistry approach made chemistry lessons interesting, interactive, and enabled learners to acquire many learning skills by themselves. Keywords: Comboplate, wells, microchemistry kit, micro quantity, macro quantity.
Micro chemistry experimentation has come to reduce the usual traditional experimentation through miniature activities. In addition it has reduced activity time and the cost of resources significantly and yet provided personal hands-on experiences for learners. This study presents the design of micro chemistry experimentation for some quantitative and qualitative inorganic chemistry topics for first year undergraduate teacher trainees as well as to introduce a motivating way to teach and conduct chemistry activities. It basically set out to explore the designed low-cost practical approach that could contribute to improved laboratory practice in Ghana, in view of resource, time, and space constraints in a teaching institution. Overall findings showed that the micro chemistry approach made chemistry lessons interesting, interactive, and enabled learners to acquire many learning skills by themselves. Keywords: Comboplate, wells, microchemistry kit, micro quantity, macro quantity.
Faculty of Science EducationOct 13, 2015
Hanson, R., Twumasi, A. K., Antwi, V. (2015). Undergraduate chemistry teacher trainees' understanding of chemical phenomena. European Journal of Basic and Applied Sciences, 2,
Abstract
Knowledge about periodic trends enables students to understand and explain chemical phenomena which they encounter in everyday life and in formal settings such as in chemical activities in school laboratories. The case of first year undergraduate students’ understanding of chemical phenomena was assessed through an interpretive study. The study revealed that almost half of Ghanaian students at the entry point of tertiary teacher education had several alternative conceptions about periodicity in general and chemical phenomena in particular. The highest alternative conception was found to be on the electronegativities within a group of atoms and how they changed as well as how they affected polarity. Keywords: Diagnostic test, Electron affinity, electronegativity, ionisation energy, periodic trend.
Knowledge about periodic trends enables students to understand and explain chemical phenomena which they encounter in everyday life and in formal settings such as in chemical activities in school laboratories. The case of first year undergraduate students’ understanding of chemical phenomena was assessed through an interpretive study. The study revealed that almost half of Ghanaian students at the entry point of tertiary teacher education had several alternative conceptions about periodicity in general and chemical phenomena in particular. The highest alternative conception was found to be on the electronegativities within a group of atoms and how they changed as well as how they affected polarity. Keywords: Diagnostic test, Electron affinity, electronegativity, ionisation energy, periodic trend.
Faculty of Science EducationOct 13, 2015
Hanson, R.; Twumasi, A. K.; Antwi, V.; (2015). Undergraduate chemistry teacher trainees' understanding of chemical phenomena. European Journal of Basic and Applied Sciences, 2,
Abstract
Knowledge about periodic trends enables students to understand and explain chemical phenomena which they encounter in everyday life and in formal settings such as in chemical activities in school laboratories. The case of first year undergraduate students’ understanding of chemical phenomena was assessed through an interpretive study. The study revealed that almost half of Ghanaian students at the entry point of tertiary teacher education had several alternative conceptions about periodicity in general and chemical phenomena in particular. The highest alternative conception was found to be on the electronegativities within a group of atoms and how they changed as well as how they affected polarity. Keywords: Diagnostic test, Electron affinity, electronegativity, ionisation energy, periodic trend.
Knowledge about periodic trends enables students to understand and explain chemical phenomena which they encounter in everyday life and in formal settings such as in chemical activities in school laboratories. The case of first year undergraduate students’ understanding of chemical phenomena was assessed through an interpretive study. The study revealed that almost half of Ghanaian students at the entry point of tertiary teacher education had several alternative conceptions about periodicity in general and chemical phenomena in particular. The highest alternative conception was found to be on the electronegativities within a group of atoms and how they changed as well as how they affected polarity. Keywords: Diagnostic test, Electron affinity, electronegativity, ionisation energy, periodic trend.
Faculty of Science EducationOct 13, 2015
Brako, I & Asah-Asante, K. (2014). Single Spine, Double Spine or Multiple Spine: Solving Labour Conflicts and Making Public Sector Jobs More Rewarding in Ghana. Modern Africa: Politics, History and Society, 2,
Faculty of Social Sciences EducationSep 16, 2015
Owusu-Ansah, C. & Afful, D. (2015). Integrating Academic Management with Business Planning Activities: The case of University of Education, Winneba. Journal of Education and Practice, 6,
Abstract
Currently, public universities are facing chronic problem of underfunding. In a bid to explore more alternative and innovative ways of addressing such underfunding challenges, authorities of universities have sought to inject business activities into the management of the universities. They are now forced to search for additional sources of income from the market and serve market needs. They also commercialize some of their activities, services and programmes. This paper seeks to examine traditional role of universities and the need to inject business strategies or activities into the practices of higher education. It further highlights the positioning of the University of Education, Winneba in the marketplace and the challenges of integrating business planning activities in universities. It concludes on what needs to be done to make such intervention meaningful.
Currently, public universities are facing chronic problem of underfunding. In a bid to explore more alternative and innovative ways of addressing such underfunding challenges, authorities of universities have sought to inject business activities into the management of the universities. They are now forced to search for additional sources of income from the market and serve market needs. They also commercialize some of their activities, services and programmes. This paper seeks to examine traditional role of universities and the need to inject business strategies or activities into the practices of higher education. It further highlights the positioning of the University of Education, Winneba in the marketplace and the challenges of integrating business planning activities in universities. It concludes on what needs to be done to make such intervention meaningful.
RegistrySep 02, 2015
Owusu-Ansah, C. (2015). Academic Freedom: Its Relevance and Challenges for Public Universities in Ghana Today. Journal of Education and Practice, 6,
Abstract
There have been various shapes of opinions shared on the concept of academic freedom. This concept means different things to different people. Those outside the University view academic freedom with some level of suspicion. Even among the academia, academic freedom is rarely understood. To foster the growth of knowledge and its dissemination, the frontiers of academic freedom must be widened and embraced. This paper seeks to explore the frontiers of academic freedom, the various limitations practitioners face with the concept and how to make the concept relevant today.
There have been various shapes of opinions shared on the concept of academic freedom. This concept means different things to different people. Those outside the University view academic freedom with some level of suspicion. Even among the academia, academic freedom is rarely understood. To foster the growth of knowledge and its dissemination, the frontiers of academic freedom must be widened and embraced. This paper seeks to explore the frontiers of academic freedom, the various limitations practitioners face with the concept and how to make the concept relevant today.
RegistrySep 02, 2015
Owusu-Ansah, C. (2014). Internationalization of Ghanaian Polytechnic Education: Perspectives, Choices and Challenges. Journal of Business and Educational Policies, 10,
Abstract
As the world becomes a global village, most academic institutions all over the world have opened their doors as a way to integrate international dimensions into their activities. The exposure the students get through internationalization activities does not only help them to become responsible global citizens but it also enables the institutions to develop joint research . This paper seeks to discuss the concept, forms, elements and levels of internationalization, rationales and strategic choices of internationalization. It ends by shedding light on various ways of integrating international dimensions into polytechnic education, the challenges being faced as well as the recommendations to enhance the internationalization agenda in these institutions.
As the world becomes a global village, most academic institutions all over the world have opened their doors as a way to integrate international dimensions into their activities. The exposure the students get through internationalization activities does not only help them to become responsible global citizens but it also enables the institutions to develop joint research . This paper seeks to discuss the concept, forms, elements and levels of internationalization, rationales and strategic choices of internationalization. It ends by shedding light on various ways of integrating international dimensions into polytechnic education, the challenges being faced as well as the recommendations to enhance the internationalization agenda in these institutions.
RegistrySep 02, 2015
Brako, I. & Seddoh, J.E., (2015). Public Administration. Winneba: IEDE-UEW. http://iede@uew.edu.gh. ISBN:
Abstract
Faculty of Social Sciences EducationAug 31, 2015
