March 2011

Evidence of a Miocene volcano-sedimentary lithostratigraphic sequence at Ngwa (Dschang Region, West Cameroon): Preliminary analyses and geodynamic interpretation

  The Ngwa sedimentary sequence is situated on the southern flank of the Bambouto volcano. Analysis of petrography, lithostratigraphy, mineralogy, morphology and morphometry enabled the reconstruction and interpretation of their stratigraphic architecture, depositional and paleogeographic setting, the origin of the sediments and the geological history of this region. The lithostratigraphic sequence of the...

Author(s): P. L. Kenfack, P. Tematio, M. Kwekam, G. Ngueutchoua and P. R. Njike

March 2011

Physico-chemical properties of bio-ethanol/gasoline blends and the qualitative effect of different blends on gasoline quality and engine performance

  Physico-chemical and operational properties of various gasoline bio-ethanol blends were evaluated. Bio-ethanol was obtained through distillation from maize (Zea mays), sugar cane (Saccharum L), raffia (Raffia vinefera) wine, and palm wine and then purified using a rotavapor. Engine trails involved combinations of various ratios of gasoline/bio-ethanol as fuel in a small unmodified gasoline...

Author(s): Tangka J. K., Berinyuy J. E., Tekounegnin,   Okale A. N.