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Now showing items 21-30 of 49
The importance of water and oxygen in the evolution of hydrogen shuttle mechanisms
(University of Nairobi, 1981)
1.
1. Aerobic carbohydrate metabolism necessitates a hydrogen shuttle mechanism.
2.
2. This mechanism must supply glyceraldehyde 3-phosphate dehydrogenase with NAD and must not, in itself, detract from the ...
Westwards moving disturbances in the Southwest Indian Ocean
(1989)
The First Garp Global Experiment data collected during 1979 at sea level and 850 mb level have been used to examine the origin and characteristics of the westwards moving disturbances in the western Indian Ocean.
From the ...
Electroreduction of pyridinium carboxylic acids homarine and trigonelline in acidic solutions
(1984)
Homarine and trigonelline are reduced at the carboxylic acid group at mercury electrodes in acidic solutions. In dc polarography and cyclic voltammetry, reduction yields the hydrated aldehyde, but controlled-potential ...
Quasi-periodic patterns in the East African rainfall records
(1982)
In this study East African rainfall records within the period 1922-80 were
subjected to spectral analysis in order to examine whether the
fluctuations in rainfall during 1922-80 exhibited any periodic or quasi-periodic ...
The characteristics of wet spells in Tanzania
(1982)
In Tanzania where the bulk of economy depends largely on rain-fed agriculture, the
study of daily rainfall patterns is of paramount importance. It is well known that wet or dry
spells lasting for long duration may impose ...
Growth, Development and Life Cycle of Icerya pattersoni (Newstead) (Homoptera: Margarodidae), a Coffee Pest in Kenya
(University of Nairobi, 1988-02)
Experiments carried out in a coffee plantation to determine the developmental period of Icerya paltersoni (Newst.) showed that the female and male scales lasted 157 and 129 days on average, respectively. The different ...
Potential of Bacillus thuringiensis var israelensis for mosquito malaria vector control in Kenya.
(University of Nairobi, 1989)
The main vectors of malaria in Kenya are Anopheles arabiensis, An. gambiae and An.
funestus. In the Mwea Rice Irrigation Scheme of Central Kenya, Art arabiensis is the
principal vector, accounting for over 83% of the ...
Temporal fluctuations of seasonal rainfall patterns in East Africa
(1984)
In order to investigate temporal fluctuations in the seasonal rainfall over East
Africa, monthly rainfall records from about 100 stations during" the period 1931 -75 were subjected
to harmonic analysis on the yearly ...
Simultaneous determination of iron(III) and vanadium(V) with N-phenylcinnamohydroxamic acid and thiocyanate by extraction-spectrophotometry
(University of Nairobi, 1985)
N-Phenylcinnarnohydroxamic acid (PCHA) reacts with iron(III) and vanadium(V) in the presence of thiocyanate to form water-insoluble orange and green complexes, respectively. The iron(III)-PCHA and vanadium(V)-PCHA-thiocyanate ...