The OUSL Journal is a peer-reviewed open access journal published by the Open University of Sri Lanka (OUSL). It first scholarly in focusing on research field and Distance Learning (ODL), being since 1997. provides platform to publish pedagogy relating teaching learning at level, particular (ODL). also forum for review articles related areas Agriculture, Natural Sciences, Education, Engineering...

The pattern of senescence was studied by following the changes in chlorophyll and protein in the leaves and by measuring (32)P retention and export from source to sink during development of the rice plant (Oryza sativa L. cv. Jaya) subjected to different manipulative treatments. With the advance of reproductive development, the chronological sequence of leaf senescence was changed, so that the ...

A method was presented for calculating daughter yield deviations of bulls and average yield deviations of cows under general multiple trait models. Reliabilities associated with the yield deviations were approximated using the multiple trait effective daughter contribution method. The presented daughter yield deviation formula was verified to be correct in a simulation study with a random regre...

The kinetics of cell proliferation of Saccharomyces cerevisiae were studied at 4 growth rates using time-lapse cinephotomicrography. Cells were grown on media with a high refractive index to reveal greater intracellular detail under the phase-contrast microscope. The morphological cell-cycle events scored were: bud emergence, nuclear migration, nuclear division, onset of cytokinesis and cell se...