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Major Influences on Science Achievement in a Developing Country: Kenya
(International Journal of Science Education, 1989)
This study seeks to contribute to our understanding of the relative importance of selected student, teacher and school characteristics on student achievement and attitudes towards science. The sample included 424 Form 4 ...
The behaviour of nitrogen fertilizers in neutral and acid loess soils II. Distribution and balances of 15 N‐tagged nitrogen
(Wiley-VCH Verlag, 1983)
A study, to investigate the remaining fertilizer-N in undisturbed soil columns from agricultural and forest soils after 60 days of percolation (see part I), was carried out. The columns were fertilized with two 15-N tagged ...
Leaching of plant nutrients from an acid forest soil after nitrogen fertilizer application
(Springer Verlag, 1986)
In a laboratory experiment, the effect of nitrogen fertilizers on the leaching patterns and input-output budgets of plant nutrients in an acid soil (dystric cambisols) was studied. An amount of N corresponding to 80 kg/ha ...
Effects of paracetamol and acetylsalicylic acid on the post-operative course after experimental orthopaedic surgery in dogs
(Wiley, 1988-06)
In placebo-controlled cross-over trials in dogs, two ‘identical’ operations were performed on the forelimbs of each animal with an interval of 28 days, to evaluate how daily doses of 1.5 g paracetamol, 1.5 g acetylsalicylic ...
Phytochemical Screening of Tanzanian Medicinal Plants. I.
(Elsevier, 1984-07)
To evaluate traditional medicine, which is an important part of the health-care system in Tanzania, three different regions, Coast, Morogoro and Kilimanjaro were surveyed for the herbs used by traditional healers. For each ...
Simulation of nitrate movement in undisturbed soil columns
(Elsevier Masson, 1984)
In order to simulate the behaviour of nitrate movement in soils, two loessal soils were used which differed in their physical and chemical fertility. Undisturbed soil columns of 30 cm in length and 15 cm diameter were ...
Hall Effects on the Oscillatory MHD Flow through Porous Medium in a Rotating Fluid
(Springer-Verlag, 1988)
Taking Hall currents into account the unsteady magnetohydrodynamical flow through a porous medium bounded by an infinite vertical limiting surface in a rotating frame of reference is theoretically investigated when a strong ...
Unsteady MHD Free-convective Flow through a Porous Medium with Hall Currents
(Kluwer Academic Publishers, 1988)
The two-dimensional unsteady free-convective flow through a porous medium bounded by an infinite vertical plate for an incompressible viscous and electrically conducting fluid is considered, when a strong magnetic field ...
A population study of small rodents in a dry sub-humid grassland in Kenya
(Cambridge University Press, 1985-08)
Estimates were made of rodent longevity, population biomass and production in a dry sub-humid grassland area in Kenya, The results were based on a live-trapping study made over a 27-month period. During this time fourteen ...