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Grřnne traktor har travlt med at samle aebler og korn pĺ marken. Den skal flytte et trae, der er vaeltet hen over vejen for den kan komme hjen. Tof! Tof!
This study deals with the use of kenaf (Hibiscus canabinus) fibre
as a base friction material in the production of automotive brake
pads. Asbestos fibre has been used as the traditional base material
in brake pads but due to its health hazard, non-renewability, cost,
non-biodegradability and difficulty in processing, the use of plant
fibres that are biodegradable, cost effective, renewable and user
friendly for brake pad production has been investigated in this
work. In order to assess the suitability of kenaf fibre in the
production of automotive brake pads, kenaf stems of 20 m thick were
cut at the base, middle and top sections of the plant and were
examined under a camera fitted optical light microscope with a
stage micrometer. The fibres were retted, bleached and modified
using mercerization, acetylation and semi-carbonisation techniques
to obtain three modified fibres in addition to the crude
fibre.Brake Pads were Produced from these samples and were
evaluated, the performance evaluation results indicated that the
crude fibre based kenaf brake pads have high percentage of porosity
and water absorption capacity with an average value of 38 % and
0.067 g respectively."
This book is about a recent study that was carried out in the
Department of Agricultural Engineering, Taraba State College of
Agriculture, Jalingo Nigeria. It was carried out by using wind vane
to measure the wind direction, the cup anemometer to measure the
wind speed (m/s). An inverter to convert direct current (DC) to
alternating current (AC) and 83 series digital multi-meter to
measure the voltage generated by the wind electricity generating
plant. The result obtained shows that, as the wind speed increases,
the voltage generated also increases, also the power generated. The
highest wind speed was recorded in the month of May, 2008 with an
average value 14.49 (m/s), also the highest power generated was
recorded in the month of May, 2008 with an average value of 10.64
(watts). The least voltage (V) generated was recorded in the month
of June, 2008 with average value of 55.9 (V). Also the least power
generated was recorded in the month of June, 2008 with an average
value of 6.344 (watts). All materials used in this book were
locally sourced and utilised.I therefore recommend it for students
of Agricultural and Environmental Engineering
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