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A Method for Computing Initial Approximations for a 3-parameter Exponential Function

C. R. Kikawa, M. Y. Shatalov & P. H. Kloppers · Physical Science International Journal · 2015

This paper proposes a modified method (MM) for computing initial guess values (IGVs) of a single exponential class of transcendental least square problems. The proposed method is an improvement of the already published multiple goal function (MGF) method. Current approaches like...

Open access Research Article 10.9734/PSIJ/2015/16503

Estimation of Wind Power Potential of Six Sites in Eastern Cape Province of South Africa

Chipo Shonhiwa, Golden Makaka & Kudakwashe Munjeri · Physical Science International Journal · 2015

Aims: To use the five year wind speed measurements to assess the wind power potential of six sites of part of the Eastern Cape Province. Study Design: The potential for generating electricity from wind was assessed for six sites of the western part of the Eastern Cape Province (B...

Open access Research Article 10.9734/PSIJ/2015/16699

The Effect of ZnO nanoparticles Filler on Complex Permittivity of ZnO-PCL Nanocomposite at Microwave Frequency

Abubakar Yakubu, Zulkifly Abbas, Nor Azowa Ibrahim & Ahmad Fahad · Physical Science International Journal · 2015

ZnO Nanoparticle was succesfully prepared by microwave irradiation method. The nano particles were then used as filler in the ZnO-PCL nanocomposites. The composites were prepared via the melt blend technique. The effect of the different percentages of the ZnO nanoparticles filler...

Open access Research Article 10.9734/PSIJ/2015/16692

Numerical Simulation and Measurement of Temperature Distribution in Water-in-Glass Evacuated Solar Water Heater

Shonhiwa Chipo, Yang Song & Baokuan Li · Physical Science International Journal · 2015

Aims: This study focused on investigating the thermal behaviour of a water-in-glass evacuated solar heater experimentally and numerically. Study Design: The study was carried out in three parts: numerical modelling, experimentation and validation of the numerical modelling result...

Open access Research Article 10.9734/PSIJ/2015/16328

Effect of High Voltage on Texture, Color and Growth of Aloe vera Leaves

Faizan Ahmed Sheikh, Raminder Preet Pal Singh, Jang Bahadur Singh & Parveen Lehana · Physical Science International Journal · 2015

With the growth in transmission lines all over the world an evident observation comes in front regarding the effect of high voltage on the plants. High-voltage transmission lines are used to transmit electric power over long distances. High voltage may have positive or negative e...

Open access Research Article 10.9734/PSIJ/2015/12970

MHD Flow of Fluid over a Rotating Inclined Permeable Plate with Variable Reactive Index

Mohammad Wahiduzzaman, Md. Shakhaoath Khan, Ifsana Karim, Pallab Biswas & Md. Sharif Uddin · Physical Science International Journal · 2015

MHD free convection, heat and mass transfer flow over a rotating inclined permeable plate with the influence of magnetic field, thermal radiation and chemical reaction of various order has been investigated numerically. The governing boundary-layer equations are formulated and tr...

Open access Research Article 10.9734/PSIJ/2015/15194

Effects of Temperature on the Pozzolanic Characteristics of Metakaolin-Concrete

Musbau A. Salau & Oseafiana J. Osemeke · Physical Science International Journal · 2015

This paper focused on the thermal technique of activating pozzolanic activity of natural pozzolans, specifically calcined kaolinite clay in the form of metakaolin. The effect of heating temperatures over the range 450ºC-1050ºC in steps of 150ºC on the dehydroxylation of the kaoli...

Open access Research Article 10.9734/PSIJ/2015/13146

Aproximations in Divisible Groups: Part I

Jeffery Ezearn & William Obeng-Denteh · Physical Science International Journal · 2015

This is the first in a series of papers on Dirichlet-type approximation in the setting of Cauchy sequences in normed divisible groups. In particular, we demonstrate that the concept of approximation exponents are extendable to elements belonging to the completion of a normed uniq...

Open access Research Article 10.9734/PSIJ/2015/10666

Structural, Optical and Electrical Properties of Chemical Vapour Deposited Nitrogen Doped Diamond Like Carbon Films

S. Kundoo & S. Kar · Physical Science International Journal · 2015

Aim: Deposition of undoped and nitrogen doped amorphous diamond like carbon films and investigation of improved electrical, optical, field emission as well as structural properties of the films due to nitrogen doping. Materials and Methods: Nitrogen doped diamond like carbon (N-D...

Open access Research Article 10.9734/PSIJ/2015/15698

Evaluation of Solar Cell Using Terahertz Time-Domain Spectroscopy

K. A. Salek, I. Kawayama, H. Murakami & M. Tonouchi · Physical Science International Journal · 2015

Terahertz time-domain spectroscopy (THz-TDS) has been used to investigate the optical properties of mono silicon solar cell. The sample was optically excited using continuous-wave (CW) light of wavelengths of 800 nm and 365 nm and the carrier density and mobility were extracted f...

Open access Research Article 10.9734/PSIJ/2015/15338

Geoelectrical Investigation of Soils as Foundation Materials in Umudike Area, Southeastern Nigeria

E. U. Nwokoma, G. U. Chukwu & C. Amos-Uhegbu · Physical Science International Journal · 2015

Geoelectrical investigation of soils in Umudike area of Abia State was undertaken in order to determine the competence of the soils as foundation materials. A total of 18 Vertical Electrical Sounding (VES), using Schlumberger configuration was carried out.  The results revealed t...

Open access Research Article 10.9734/PSIJ/2015/14667

Geophysical Evaluation of Erosion Sites in some Parts of Abia State, Southeastern Nigeria

U. J. John, M. U. Igboekwe & C. Amos-Uhegbu · Physical Science International Journal · 2015

This work evaluates the external and internal structures of erosion sites in parts of Abia state, Nigeria and determines the gully erosion sensitivity of the sediments. Attributes such as lithology, land use, geomorphology, and climate were factored-in as gully erosion predisposi...

Open access Research Article 10.9734/PSIJ/2015/13821