- Olwal et al, (2005) proposes a synchronous digital receiver that implements a timing phase shift estimator incorporated after a free running sampling circuit. The timing phase shift estimator is designed by combining a discrete root raised cosine matche

Citation:
OTIENO MROLWALTHOMAS. "- Olwal et al, (2005) proposes a synchronous digital receiver that implements a timing phase shift estimator incorporated after a free running sampling circuit. The timing phase shift estimator is designed by combining a discrete root raised cosine matche.". In: Faculty of Veterinary Medicine Biennial Scientific Conference November 2004, Nairobi. Journal of Applied Biosciences; 2005.

Abstract:

Hydro-distilled volatile oils from the leaves of Ocimum gratissimum L. (Lamiaceae) from Meru district in Eastern Kenya were analysed by gas chromatography-mass spectrometry (GC-MS) and also evaluated for antimicrobial activity. The oil was dominated by monoterpens which accounted for 92.48%. This monoterpene fraction was characterized by a high percentage of eugenol (68.8%). The other major monoterpenes were methyl eugenol (13.21%), cis-ocimene (7.47%), trans-ocimene (0.94%), β-pinene (1.10%) and camphor (0.95%). The sesquiterpenes present in fairly good amounts were germacrene D (4.25%) and trans-caryophyllene (1.69%). The minor sesquiterpenes were α-farnesene (0.85%) and β-bisabolene (0.74%). The antimicrobial activities of the essential oils were evaluated against both Gram positive (Staphylococcus aureus, Bacillus spp.) and Gram negative (Escherichia coli, Pseudomonas aeruginosae, Salmonella typhi, Klebisiella pneumoniae, Proteus mirabilis) bacteria and a pathogenic fungus Candida albicans. The oil had pronounced antibacterial and antifungal activities on all the microbes.

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