Now showing items 31-40 of 468
Establishment of pine woolly aphid, Pineus pini (Gmelin) (Adelgidae) on some host trees in Kenya
The establishment of Pineus pini (Gmel.) on 6 common species of pine in Kenya was examined in the laboratory in relation to possible causes for observed differences in the rates of infestation on different host species in ...
Mermithidae (Nematoda) infection of the aquatic stages of Simulium (Edwardsellum) from the Nine river systems in Kenya
Mermithid juveniles recovered from S. damnosum in Kenya were placed in the genus Agamomermis. Varying rates of infection by the mermithids from nine river systems were recorded between 1981 and 1983. In both the Isiukhu ...
Distribution of Cr, Pb, Cd, Zn, Fe and Mn in lake Victoria sediments, East Africa
The presence of many metals at trace or ultra-trace levels in the human environment has received increased global attention. Sediments as a sink for pollutants are widely recognized pollution sources and diagenesis and ...
Surface preparation of glassy carbon electrodes
Recent work on glassy carbon electrodes for various applications is reviewed. Activation of glassy carbon electrodes by different types of polishing, heat treatment, and electrochemical methods yields enhanced rates of ...
Exciton Dynamics In Tetracene Single Crystals Studied Using Femtosecond Laser Spectroscopy
(University of Nairobi, 1986)
HPCL Separation and Quantitative Determination of Valepotriates from Valeriana kilimandascharica
Valepotriates, mainly isovaltrate and valtrate, have been separated and quantitatively estimated by reversed-phase HPLC in the leaves, flowers, stems and rhizomes of Valeriana kilimandascharica. The isovaltrate/valtrate ...