Energy Source and Technology Options for Kenya: Towards Direct Conversion of Solar Energy to Mechanical Work
Raphael Venson Makokha Otakwa,
Herick Othieno,
Andrew Odhiambo Oduor,
Awange Joseph Lagat
Issue:
Volume 2, Issue 4, August 2017
Pages:
43-47
Received:
7 May 2017
Accepted:
26 May 2017
Published:
7 July 2017
Abstract: Sunlight though not heat, has inherent potential for direct conversion to mechanical work, just as heat does. The Physics pitching the possibility of direct conversion of nearly the entire sunlight received by a system into mechanical work has been formulated in this work. The feasibility of the concept has also been pursued, as well as alignment of the idea to the 2017-2027 predicted technology tipping points. Key to the ultimate realization of this propose, which argues for greater espousal of renewable energy options that foster attainment of engines for direct conversion of solar energy to mechanical work, are highly reflective and perfect mirrors. Smart areas and their associated favorable ecological footprints and climate change moderation will be among the key indicators of espousal of this conception.
Abstract: Sunlight though not heat, has inherent potential for direct conversion to mechanical work, just as heat does. The Physics pitching the possibility of direct conversion of nearly the entire sunlight received by a system into mechanical work has been formulated in this work. The feasibility of the concept has also been pursued, as well as alignment o...
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Proximate Composition, Phytoconstituents and Mineral Contents of Soybean (Glycine Max) Flour Grown and Processed in Northern Nigeria
Useh Mercy Uwem,
Adebiyi Adedayo Babafemi,
Dauda Mary Sunday
Issue:
Volume 2, Issue 4, August 2017
Pages:
48-53
Received:
4 October 2016
Accepted:
13 January 2017
Published:
1 August 2017
Abstract: Soybean (Glycine max), is a species of legume widely grown for its edible bean which has numerous uses. Soybeans are an important source of not only proteins, but carbohydrates, fats, and many essential vitamins and minerals. So, they facilitate normal growth and development in young children. In this study, the phytoconstituents, proximate composition and mineral contents of soybean flour was evaluated using standard processing techniques. The preliminary phytochemical screening indicated the presence of phenols, cardiac glycosides, steroids, saponins, flavonoids in both the methanol and aqueous extracts. The quantitative phytochemical screening showed that saponin had the highest content (18.4%) followed by phenol (16.8%) and flavonoids (12.4%) while phytate was the least (0.07%). The proximate composition was in this order: protein >carbohydrate > crude fat > moisture > crude fibre > ash content which showed that the soy flour is relatively high in protein. The minerals analyzed for were: Ca (231.6), Fe (5.790), Mg (249.8), Zn (2.414) and Mn (0.651) which were within the FAO/WHO standards for metals in foods.
Abstract: Soybean (Glycine max), is a species of legume widely grown for its edible bean which has numerous uses. Soybeans are an important source of not only proteins, but carbohydrates, fats, and many essential vitamins and minerals. So, they facilitate normal growth and development in young children. In this study, the phytoconstituents, proximate composi...
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Physico-chemical Characterization and Comparative Studies of Some Heavy Metals Using Activated Carbon from Date Palm Seed
Useh Mercy Uwem,
Danlami Uzama,
Okonkwo Tochukwu Perpetua
Issue:
Volume 2, Issue 4, August 2017
Pages:
54-59
Received:
4 October 2016
Accepted:
27 June 2017
Published:
1 August 2017
Abstract: Activated carbon from date palm seed was analyzed to ascertain the physicochemical parameters and conduct comparative studies [with industrial activated carbons- Powdered Activated Carbon (PAC) and Granular Activated Carbon (GAC)] of some heavy metals (Cd, Pb, Co, Mn and Cr) present using standard analytical techniques. The physicochemical parameters of the activated carbon as determined were: Bulk density (0.69 g/ml), Ash content (6.92%), Iodine value (10.38 mg/g), Volatile organic matter (7.63%), pH (6.92) and Moisture content (0.60%). The result also showed that date palm seed activated carbon adsorbed more of the Pb, as well as Cr better than the industrial activated carbon (GAC and PAC). The XRD result showed that the carbon has an amorphous structure which agrees with diffractogram of other activated carbons.
Abstract: Activated carbon from date palm seed was analyzed to ascertain the physicochemical parameters and conduct comparative studies [with industrial activated carbons- Powdered Activated Carbon (PAC) and Granular Activated Carbon (GAC)] of some heavy metals (Cd, Pb, Co, Mn and Cr) present using standard analytical techniques. The physicochemical paramete...
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