http://41.74.91.244:8080/handle/123456789/32 2026-04-04T12:34:34Z 2026-04-04T12:34:34Z Essumang, D.K. Adokoh, C.K. Boamponsem, L. http://41.74.91.244:8080/handle/123456789/4631 2026-02-23T10:58:16Z 2010-09-17T00:00:00Z

Levels of Platinum Group Metals in Selected Species (Sarotherodon melanotheron, Chonophorus lateristriga, Macrobrachium vollenhovenii and Crassostrea tulipa) in Some Estuaries and Lagoons Along the Coast of Ghana Essumang, D.K.; Adokoh, C.K.; Boamponsem, L. The use of some biota as bioindicators of heavy metal pollution has been demonstrated as particularly adequate due to their capacity of bioconcentration. This study evaluated the levels of platinum group metals (PGMs) in some selected species along the coastal belt of Ghana, using the neutron activation analysis (NAA) method. The result was processed to evaluate pollution indices in order to map the distribution of the metals in those species in the lagoons and estuaries along the costal belt of Ghana. The analysis showed significant levels of all PGMs in blackchin tilapia (Sarotherodon melanotheron Cichlidae), brown goby (Chonophorus lateristriga Gobiidae), shrimp (Macrobrachium vollenhovenii Palaemonidae), and mangrove oysters (Crassostrea tulipa Ostreidae) in the lagoons and river Pra estuary. However, the oysters showed an elevated mean concentration of 0.13 μg/g (dry weight) Pd. From the pollution indices, most of the sampling sites registered mean contamination factor (CF) values between 1.20 and 3.00 for Pt, Pd, and Rh. The pollution load index (PLI) conducted also gave an average pollution index between 0.79 and 2.37, indicating progressive contamination levels. The results revealed that anthropogenic sources, industrial and hospital effluent, etc., together with vehicular emissions, could be the contributing factors to the deposition of PGMs along the Ghanaian coas

2010-09-17T00:00:00Z Asabre-Ameyaw, A. Dei, G.J.S. Raheem, K. http://41.74.91.244:8080/handle/123456789/4630 2026-02-23T10:58:14Z 2009-12-01T00:00:00Z

Examination of traditional medicine and herbal pharmacology and the implications for teaching and education: A Ghanaian Case Study Asabre-Ameyaw, A.; Dei, G.J.S.; Raheem, K. This article presents the preliminary findings of a pilot study of the practice, uses, and effectiveness of traditional medicine in Ghana. Based on in-depth interviews with local key practitioners and users of traditional medicine, the article points to some of the educational significance of local cultural knowledge on the environment and the relevance of such knowledge for science education in Ghana. In the discussion the authors briefly highlight general themes relating to local understandings of traditional medicine, the distinctions between traditional and plant medicine, contestations between traditional medicine and orthodox medicine, local conceptions of health and a healthy individual, the economics of health, and the lessons of science and public education. Although the findings of the study are preliminary, the article argues that much is to be gained for educational purposes through the critical study of traditional medicine, particularly in terms of the promotion of science and community education in Ghana.

2009-12-01T00:00:00Z Assafuah-Drakow, A. http://41.74.91.244:8080/handle/123456789/4629 2026-02-23T10:58:13Z 2018-06-01T00:00:00Z

Chemistry Teachers’ perception of the use of simulation games in Chemical Equations Balancing Assafuah-Drakow, A. This study investigated the senior high school (SHS) chemistry teachers’ perception of the use of simulation games (SGs) in chemical equations balancing (CEB). The study employed a type 1 developmental research design in which SGs were designed, pilot-tested and finally developed. The developed SGs were implemented and evaluated in a two (2) day workshop using 35 chemistry teachers (made up of 20 males and 15 females) drawn from ten (10) SHS in the Sekondi-Takoradi Metropolis in the Western Region of Ghana. Questionnaire and interview were the two (2) instruments used for the study. The findings showed that majority (33 out of 35) chemistry teachers representing 94.2% agreed that SHS students had learning difficulties with regards to simple CEB. Again, all the 35 SHS chemistry teachers representing 100% indicated that they enjoyed the use of SGs materials and instructional approach in teaching simple CEB and that they wanted more of the SGs materials to be developed and used in teaching abstract chemistry concepts. It was recommended that stimulating experiments such as SGs approach should be designed and developed to interest students in the exciting field of chemistry so that more students may be drawn into studying chemistry.

2018-06-01T00:00:00Z Duncan, A.E. Awuah, E. Dodoo, D.K. Sam, A. Ameyaw, Y. http://41.74.91.244:8080/handle/123456789/4628 2026-02-23T10:58:12Z 2010-12-01T00:00:00Z

Assessing The Potential of A Natural Wetland in Grey Water Treatment (A Case Study in Cape Coast - Central Region of Ghana) Duncan, A.E.; Awuah, E.; Dodoo, D.K.; Sam, A.; Ameyaw, Y. Grey water has been discharged onto this wetland for more than thirty years without any measurement of the quality of the influent and effluent. The effluent eventually joins a stream (Kakum River) which is a source of water for recreation, farming, drinking and fishing. The quality of the effluent which enters the receiving water as well as the potential of the wetland in the treatment process has not been determined. The purpose of this research is to assess the potential of the wetland in grey water treatment. Three communities in Cape Coast, the formal capital of Ghana were selected for this work. The wetland under study has an area of about 17,928m2 and hydraulic loading rate of 0.0164m/d. Field studies were conducted to demarcate the borders as well as to confirm the communities which discharges into the wetland. The results indicate that the wetland has very high potential in treating grey water, with suspended solids showing high removal efficiency. It was also inferred from the results that the wetland’s treatment is influenced by the precipitation pattern of the area and this is clearly shown in the removal efficiency of manganese. The findings will help decision makers to make proper laws concerning wetland use in Ghana. It will inform decision makers to officially consider wetlands as alternatives for grey water treatment. This paper assesses the potential of natural a wetland and makes recommendations on its proper use as well as its limitations.

2010-12-01T00:00:00Z