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Ovicidal effects of certain pesticides on the two spotted spider mite, Tetranychus urticae and the predacious mite, Amblyseius gossipi ( Acari: Tetranychidae: Phytoseiidae).
(University of Nairobi, 1988)
Abstract Not Available
High-frequency sum rules for the quasi-one-dimensional quantum plasma dielectric tensor
(1988)
A high-frequency sum-rule expansion is derived for all elements of the spinless quasi-one-dimensional quantum plasma response tensor atT=0 K. As in the magnetized classical plasmas, we find that Ω 4 13 is the only coefficient ...
High-frequency sum rules for classical one-component plasma in a magnetic field
(1988)
A high-frequency sum-rule expansion is derived for all elements of a classical plasma dielectric tensor in the presence of an external magnetic field, Ω 4 13 is found to be the only coefficient of ω−4 that has no correlational ...
Interpreting electron micrographs for Biology and Biological Sciences
(University of Nairobi, 1988)
Trypanosome-induced ovarian dysfunction. Evidence of higher residual fertility in trypanotolerant small East African goats
(University of Nairobi., 1988-09)
Changes in the length of oestrous cycles, plasma progesterone and oestradiol-17 beta levels were monitored for 6 months in Trypanosoma congolense-infected normocyclic small East African goats obtained from three tsetse-endemic ...
The humoral defense system in tsetse: differences in response due to age, sex and antigen types.
(University of Nairobi., 1988)
Inoculation of live Escherichia coli into tsetse flies, Glossina morsitans morsitans, stimulated a higher antibacterial immune response in females than in males. It increased with age in females from emergence to approximately ...
Irritant Principles of Mezereon Family (thymeleaceae), New skin irritants and tumour promoters of the daphnane and 1, 2-alkyldaphnane type from Synaptolepis kirkii and S. Retusa.
(University of Nairobi, 1988)
Seventeen mostly new, skin irritant diterpene esters (DTE) of the daphnane and 1 alpha-alkyldaphnane types were isolated from roots of Synaptolepis kirkii and Synaptolepis retusa. The parent alcohols of the daphnane types ...
Growth-inhibiting and larvicidal effects of Melia volkensii extracts on Aedes aegypti larvae
(University of Nairobi, 1988)
Extracts from dry Melia volkensii fruits contain growth-inhibiting activity against larvae of the mosquito Aedes aegypti. The active fraction may be eluted from silica gel using hexane-ethyl acetate (1:1, v:v). At a ...
Determination of total fluorine in vegetables and plants by open-flame ashing and microdiffusion : Comparison with furnace ashing and oxygen-flask combustion
(1988)
The sample is ashed in a nickel crucible over an open flame with calcium hydroxide as the fixative; fluoride is separated by micro-diffusion and measured with a fluoride-selective electrode. The calcium hydroxide fixative ...