International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Table of Content: 9 December; 7(46)

November 2012

Returning to the old belief of "ether" is mandatory

Luminiferous ether or light-bearing ether or simply ”ether”, which had been mentioned somehow since 17th century by Boyle, once believed to be a medium for traveling of light. Although, experiments like the Michelson and Morley could not prove its existence. In this article, we try to explain that, the experiments for detecting ether should be done in ultra-high velocities (over 5000 km/s), and that;...

Author(s): Shahram Malekzadeh

November 2012

Hardness-improvement of titanium using mixture gases

Hardness of 99.7% titanium was improved in acetylene-ammonia mixtures at 1,250°C for 2 h. The flow rate of acetylene was set constantly at 0.4 cm3s-1, but those of ammonia were varied over the range of 0 to 12 cm3s-1. By using an X-ray diffractometer (XRD) and an energy dispersive X-ray (EDX) analyzer, TiC, TiN, TiC0.7N0.3, and TiC0.3N0.7 phases with the corresponding elements were detected. Knoop hardness...

Author(s): Kittichai Sopunna and Somchai Thongtem

November 2012

Compositional domain dynamics in two-coupled lipid monolayer: A mean field approximation approach

A continuum model for artificial membrane was developed by treating the upper and lower layers of the membrane as a pair of coupled Ising monolayers. Linear coupling between the layers was included. Linear stability analysis was used to predict the phase diagram. The dependence of the phase-separated regions on inter-layer coupling is determined. We numerically solve the Cahn-Hilliard type equations to obtain domain...

Author(s): Kan Sornbundit, Waipot Ngamsaad, Charin Modchang, Narin Nuttavut, Darapond Triampo, and Wannapong Triampo,

November 2012

Composition dependence of structural, morphological and magnetic properties of Co (FCC)-Cu granular films

The Cobalt (Co) (FCC)-Copper (Cu) magnetic films with different compositions (x = 55.5, 44.4, 22.5) grown on glass substrate are prepared by sputtering process using a Co target and Cu sheets. The effects of the composition on morphological, structural and magnetic of the films were reported. Scanning electron microscopy (SEM) results showed that the film thickness is about 80 nm. Atomic force microscopy (AFM)...

Author(s): P. Sirisangsawang, W. Rattanasakulthong and S. Pinitsoontorn

November 2012

Application of Benjamin-Feir equations to Tornadoes’ rogue waves modulational instability in oceans

Pilots put their plane in the ideal conditions for the atmosphere to suck it and allow a successful launch; similarly some portions of the ocean surface put a Troposphere column placed above them in ideal temperature and humidity training tornadoes and primary gravity waves that accompany them. To study the behavior of rogue waves triggered by tornadoes in terms of their space and time evolution, that is, their motion...

Author(s): Daika Augustin, Messanga E. Honoré, Ngabireng C. Marie and C. Mbané Biouélé

November 2012

Breast tumor detection using microwave ultra wideband (UWB) forward scattering radar system

Most of the currently established techniques for breast cancer have inherent disadvantages, such as destructive effects, image accuracy, and others. In addition, mammography and nuclear methods have a potential for producing harmful ionization effects in humans. Another technique for breast cancer detection is microwave imaging radar, which has the advantage of a less hazardous modality and is a non-destructive method....

Author(s): R. S. A. Raja Abdullah, O. N. Samijayani, S. Adabi, A. Ismail, M. I. Saripan and S. A. Alshehri

November 2012

Individual and competitive adsorption of Lead(II) and Nickel(II) ions by chemically activated carbons

This work deals with the removal of heavy metals from wastewater which presents a major ecological problem. Recently, this has been solved by using adsorption techniques as a means to extract heavy metal ions. The present investigation was carried out on the adsorption of heavy metals from single and binary component aqueous solutions on activated carbons. The concentrations of heavy metals ions, Ni(II) and Pb(II),...


November 2012

Analysis and optimization of a repairable M[x]/G/1 queue with an additional optional vacation

This paper investigates an M[x]/G/1 queueing system with an unreliable server, where the server may take an additional vacation after the essential vacation. If the system becomes empty, the server leaves the system and takes the essential vacation. At the end of the essential vacation, the server may return to the system with probability p or take another vacation with probability 1-p. When the additional...

Author(s): Jau-Chuan Ke and Dong-Yuh Yang

November 2012

Wind energy conversion system with full-scale power converter and squirrel cage induction generator

This paper describes a modeling and control of a variable speed squirrel-cage induction generator with back to back power electronics converters used in variable speed wind energy conversion system. The power electronics is composed of the generator side converter (GSC) coupling to the grid connected converter (GCC) together via DC bus capacitor. The generator side converter (GSC) is controlled by direct torque...

Author(s): Bouaziz Béchir, Bacha Faouzi and Moncef Gasmi

November 2012

Metallic phytoremediation and extraction of nanoparticles

The use of phytoremediation is a non-destructive method of heavy metal’s removal from soils. Water hyacinth plant (Eichhronia crassipes), normally found in habitats around the world, and has the ability to extract heavy metals through its roots, stem, and leaves. The main aims of this study were two folds; the use of water hyacinth plant to remove metals (Lead, Pb; Copper, Cu; Zinc, Zn; Chromium, Cr; and Cadmium,...

Author(s): Tariq Mahmood, Salman Akbar Malik, Syed Tajammul Hussain and Shazia Aamir