Search
Now showing items 1-10 of 216
Tamarindus Indica fruit shell ash: a low cost and effective catalyst for biodiesel production from Parinari curatellifolia seeds oil
(Springer Nature Switzerland AG., 2019-02-21)
The study evaluated the potential use of agricultural waste, Tamarindus indica fruit shell ash, as a solid base catalyst
for production of biodiesel. The catalyst was prepared by calcination of T. indica fruit shell at ...
Theoretical Study of Cluster Ions Existing in Vapours over Cesium Bromide and Iodide
(British Journal of Applied Science & Technology, 2015-05-13)
The properties of ions Cs2X+, Cs3X2+, CsX2−, and Cs2X3− (X = Br or I) have been studied using the density functional theory and Möller–Plesset perturbation theory of the 2nd and 4th order. For all species the equilibrium ...
Interactions Between Sodium Ion and Constituents of Chitosan: DFT Study
(Science Publishing Group, 2015-09-03)
Glucosamine and acetylglucosamine are the constituents of chitosan and chitin natural biopolymers. In the present
study, the structure and properties of the D-glucosamine monomer (A), N-acetylglucosamine monomer (B), and ...
Vibrational and Electronic Spectra of Natural Dyes Constituents for Solar Cell Application: DFT and TDDFT Study
(Science Publishing Group, 2015-09-09)
Selected constituents of natural dyes, phenol, 1,2-benzoquinone, 1,4-benzoquinone, 1,4-naphthoquinone, and
9,10-anthraquinone have been studied theoretically using the density functional theory and time-dependent density ...
Short-term load forecasting in a hybrid microgrid: a case study in Tanzania
(Journal of Electrical Systems, 2019)
Most emerging countries such as Tanzania are promoting rural electrification through
installation of microgrids. This paper proposes an approach for short-term day-ahead load
forecast in rural hybrid microgrids in emerging ...
Natural dyes for solar cell application: uv-visible spectra and outdoor photovoltaic performance
(Research Journal in Engineering and Applied Sciences, 2014-09)
Successful conversion of visible light into electrical output was achieved by using four locally available natural dyes as
wide band gap semiconductor sensitizers in Dye-sensitized solar cells. Natural dyes extracted from ...
Structure and thermodynamic properties of positive and negative cluster ions in saturated vapour over barium dichloride
(Taylor & Francis online, 2013-03-13)
Geometrical structure, vibration spectra, and enthalpies of dissociation have been investigated for the ions BaCl3−, Ba2Cl3+, Ba3Cl5+, and Ba4Cl7+ which were detected earlier in the saturated vapour over BaCl2. Quantum ...
Geochemical Distribution of Trace Elements in Groundwater from the North Mara Large-Scale Gold Mining Area of Tanzania
(Ground Water Monitoring and Remediation, 2016-05)
The infl uence of large-scale mining operations on groundwater quality was investigated in this study. Trace element concentrations in groundwater samples from the North Mara mining area of northern Tanzania were analyzed. ...
Comparative sorption isotherms and removal studies for Pb(II) by physical and thermochemical modification of low-cost agro-wastes from Tanzania
(Elsevier, 2018-03)
Corn and rice husks, agro-wastes available in large quantities in Tanzania, were used to remove Pb2+ from aqueous solution. Husks were used in raw form, pyrolyzed form, and chemically modified form. Material characterization ...
Supersalts Na2AlX5 (X = F, Cl): Quantum Chemical Study of the Structure, Vibration Spectra and Thermodynamic Properties
(Current Journal of Applied Science and Technology, 2017-06-27)
Theoretical investigation, prediction and design of novel supersalts Na2AlX5 (X = F, Cl) have been performed. The formation of the supersalts was considered through association reactions between different building blocks: ...