Browsing by Author "Ocloo, J.K."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item Correlation of relative density and strength properties with anatomical properties of the wood of Ghanaian Celtis species(Discovery and Innovation, 2003) Ocloo, J.K.; Laing, E.The relative density (RD) and mechanical strength properties of the wood of four Ghanaian Celtis species have been studied. There were significant differences between the relative densities of the wood of the species. The wood of Celtis mildbraedii was significantly heavier (RD = 0.872) than those of C. adolfi-friderici (RD = 0.685), C. wightii (RD = 0.771) and C. zenkeri (RD = 0.789). Celtis adolfi-friderici was the lightest among the four species. There was good correlation between the relative density and some of the strength properties of the species. The wall thickness of the vessels and fibres, the fractional wall volume of the vessels and fibres of the wood were the major contributors to the density and strength of the wood of C. adolfi-friderici, C. mildbraedii and C. zenkeri.Item Emploi du Pronom Personnel 'en'. Quelques Difficultes Constatees Aupres des Apprenants de Nungua Senior High School, Accra(University of Ghana, 2013-07) Ocloo, J.K.; Amuzu, D.S.Y.; Yeboua, K.D.This study is centered on the difficulties students of Nungua Senior High School, Accra, encounter in the use of the personal pronoun «en». The analysis of the data collected through questionnaires, interviews and test items with respect to students performance is confined within the context of its partitive and quantitative use as well as the variety of functions it performs within sentences. In the light of the data analysed, the study ident ified that most students studying French as foreign language in Nungua Senior High School are unable to use correctly the personal pronoun « en » due to a number of constraints presented by the pronoun. Bearing in mind that the morpheme en is used not only as a personal pronoun but also as a preposition, it has been noted that the students find it difficult to identify these various morphosyntactic functions of « en » when it is used with respect to specific context and situation. The difficulty the students face in the use of the personal pronoun « en » is also attributed to the inappropriate teaching and learning methods/ techniques adopted by teachers of French in the teaching process. The study recommends activity methods through which the students are exposed to the use of the personal pronoun « en » as parts of speech in a given context or situation as recommended by the communicative approach instead of exposing the students to the rules governing the use of the personal pronoun « en » as grammatical category.Item The Study of the Motors Affecting the Natural Resistance of the Wood of Terminalia Ivorensis Against Termite Attack(University of Ghana, 1975-04) Ocloo, J.K.; Ayensu, G.I.; Aboh, I.J.K.; University of Ghana, College of Basic and Applied Sciences, School of Biological Sciences, Department of Botany; University of Ghana, College of Basic and Applied Sciences, School of Engineering, Department of Computer EngineeringThe natural Radial and axial variations in the resistance of the wood of Termihalia ivorensis A* Chev, against damage by subterranean termites were investigated for two trees from the same locality- The damage was studied in relation to specific gravity, the modulus of elasticity, the cross-sectional area of vessels in the wood,, and the water soluble extractives. The correlation between termite damage and these physical, mechanical and anatomical properties have been reported. It was found that the termite resistance of the wood varied significantly in the radial direction. The outerheartwood was less susceptible to damage than the sapwood and the inner-heartwood, the sapwood was less resistant to damage than the inner-heartwood. The termite resistance of the inner-heartwood increased near the top of the tree. Axial variations in the intensity of termite damage were not very pronounced. Termite damage to the wood was inversely correlated with the specific gravity and cross-sectional area of the vessels generally. The susceptibility to damage by termites generally increased with the modulus of elasticity. The specific gravity, modulus of elasticity and the crosssectional area of the vessels were inter-correlated and no one of them could be used alone to predict the termite resistance of T, ivorensis, The water soluble extractives appeared not to improve on the resistance of the wood. The two trees tested showed significant differences in their resistance to termite attack. This means that naturally growing trees of T„ ivorensis obtained from different Forest Reserves in Ghana could be expected to vary widely in their resistance against attack by subterranean termites.