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Now showing items 151-160 of 168
The ecological impact of abandoned Maasai setilements on savanna vegetation and its herbivores in the Amboseli ecosystem
(1981)
The open savannas scientist have come to regard as typical have been created by the
activities of humans, livestock, fire and wildlife. Many studies of savannas ecosystems have
concentrated on the fairly destructive ...
Steroidal and triterpenoidal sapogenins from rhoicissus revoilii, sesbania keniensis and albizia gummifera from Kenya
(1987)
A system has been developed for the fractionation, purification for the free triterpenes, sugars and steroids of the tuber of Rhoicissus revoilii PLANCH. (Vitaceae).
Hydrolysis of saponins using sodium periodate has been ...
Nitrogen fixation associated with maize plants (zea mays l.) in a temperate and a tropical soil
(1987)
In the temperate soil, low rates of acetylene
reduction activity were detected in excised roots of
field grown maize without preincubation. A higher
acetylene reduction activity (20 nmol C2H4/ g d.wt./
24 h) was recorded ...
Arsenite toxicity and tolerance in three microalgae, synechococcus leopoliensis, oscillatoria limnetica and Chlorella pyrenoidosa
(1988-12)
The cyanobacteria Oscillatoria limnetica and Synechococcus leopoliensis
manifested concentration-dependent growth lags in presence of arsenite above
200pM. There were no detectable growth lags in the Chlorophyte ...
Phytochemical and Some Bio-activity Studies of Teclea Trichocarpa, Tovomita Mangle, Aspilia Pluriseta, Tephrosia Hildebrandtii, and Milletia Thonningil
(University of Nairobi, 1984)
This thesis describes a chemical and bio activity study of five tropical plant species, namely Teclea trichocarpa Eng., Tovomita mangle G. Mariz., Aspilia pluriseta Schweinf., Tephrosia hildebrandtii Vatke. and Milletia ...