The triple point of argon is one of the defining fixed-points of the International Temperature Scale of 1990, ITS-90. Its value was assigned to be 83.8058 K by ITS-90. The thermal metrology laboratory of the National Institute for Standards, NIS has chosen, several years ago, to...
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Research Article10.9734/PSIJ/2015/12260
The main concern of present study is to investigate the MHD stagnation flow past a porous rotating disk in the presence of the velocity slip condition. The boundary-layer governing partial differential equations (PDEs) are transformed into highly nonlinear coupled ordinary differ...
Open access
Research Article10.9734/PSIJ/2015/13222
A survey of natural radionuclide level with depth in wasteland soils in some locations in Abeokuta was carried out in February 2013. Samples were collected at 10 cm depth interval from each of the locations visited. They were collected into containers with length 9 cm and width 7...
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Research Article10.9734/PSIJ/2015/8726
The present investigation aims at evaluating the effect of fly ash addition on sliding wear behaviour of pure red mud. Plasma sprayed coatings composed of red mud and varying percentage of fly ash were considered for the wear behavior study. Plasma spraying technique was used wit...
Open access
Research Article10.9734/PSIJ/2015/12624
Instead of electric charge, as the basic substance of EM theory, its static potential, as some energetic fluid, in the dielectric, non-resistive and reactive medium, is here taken as the starting quantity. All the remaining EM quantities are thus defined in the succession, by the...
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Research Article10.9734/PSIJ/2014/10647
By imposing a particular constraint of solvability on the Liouville normal form of the BenDaniel-Duke type variable mass Schr¨odinger equation, we have derived a class of solvable potentials and harmonic oscillator type solutions for the system. The method has been shown to be ap...
Open access
Research Article10.9734/PSIJ/2014/9756
This work looked at the design and manufacturing of a low cost and easy to maintain vibration-compaction block moulding machine that can accommodate two different sizes of mould 9 inch (0.46×0.23×0.22m) and 6 inch blocks(0.46×0.15×0.22m). It is borne out of the desire to solve h...
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Research Article10.9734/PSIJ/2014/5813
A new dielectric material, barium neodymium titanate (BNT) ceramic can provide good thermal and frequency stability on the dielectric properties. The synthesis of BNT ceramics with x=0.15 and 0.25 was carried out using wet solid state method. The ceramics were characterized by X-...
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Research Article10.9734/PSIJ/2014/12908
Global finite time synchronization of a class of combination-combination chaotic systems via master-slave coupling is investigated. A nonlinear feedback controller and a continuous generalized linear state-error feedback controller with simple structure are introduced in the sync...
Open access
Research Article10.9734/PSIJ/2014/12476