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Proposed Advanced Training & Educational Methodologies, for Tanker & Gas Industry
Wael Khattab,
Ibrahim El Attar
Issue:
Volume 2, Issue 1, January 2013
Pages:
1-7
Published:
10 January 2013
Abstract: Oil and gas are considered to be among the world's most prized resources. Hence, no doubtfully, The oil and gas industry plays a significant role in the global economy. Petroleum itself is used for numerous products, in addition to serving as the world's primary fuel source. Furthermore, The processes and Technologies concerned in producing and distributing oil and gas are highly complex, capital-intensive and necessitate state-of-the-art technology , nonetheless , rather more importantly human resources operating these technologies in a safe efficient mode. Here arises main concern ! What will be ideal global unified education and training methodologies to be provided by Maritime education & Training Institutes " MET for these labour in such critical rather indispensable industry? To ensure " Safer Seas & Cleaner oceans" (IMO/ IMCO 1994). This paper will illustrate ideal training & education methodologies to be delivered to these crews, in campus or rather on-board. Highlighting current conventions for promoting skills and inducing quality for such dedicated rather crucial industry.
Abstract: Oil and gas are considered to be among the world's most prized resources. Hence, no doubtfully, The oil and gas industry plays a significant role in the global economy. Petroleum itself is used for numerous products, in addition to serving as the world's primary fuel source. Furthermore, The processes and Technologies concerned in producing and dis...
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Propagation of Magneto-Thermo Surface Waves in Non-Homogenous Viscoelastic Medium of Higher Order under Gravity and Couple-Stress
Rajneesh Kakar,
Shikha Kakar
Issue:
Volume 2, Issue 1, January 2013
Pages:
8-19
Published:
10 January 2013
Abstract: The present study reveals the effects of various parameters and non-homogeneity on the surface waves propagating in viscoelastic medium. The theory of generalized surface waves has firstly been developed and then it has been employed to study the surface waves. Dispersion relation for Stoneley waves, Rayleigh waves and Love waves has been deduced. It has been observed that in the absence of viscosity, temperature, gravity, magnetism, couple stress and non-homogeneity of the material medium, the results obtained are in well agreement with the corresponding classical results.
Abstract: The present study reveals the effects of various parameters and non-homogeneity on the surface waves propagating in viscoelastic medium. The theory of generalized surface waves has firstly been developed and then it has been employed to study the surface waves. Dispersion relation for Stoneley waves, Rayleigh waves and Love waves has been deduced. ...
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A Two-Band Tight-Binding Model of Spin-Polarized Transport in Magnetic Tunnel Junctions
N. Strelokov,
M. Zhuravlev,
N. Ryzhanova,
A. Vedyayev
Issue:
Volume 2, Issue 1, January 2013
Pages:
20-29
Published:
10 January 2013
Abstract: The main features determining spin-dependent transport in magnetic tunnel junctions are well appreciated now mainly due to ab initio calculations. Nevertheless, it seems useful to have a comparatively simple model which reproduces the salient characteristics of spin-dependent transport in magnetic multilayers. We present two-band tight-binding model of magnetic tunnel junction with the layers of arbitrary thickness and non-collinear magnetization configuration. The model accounts for different symmetry of the tunneling electrons and their mixing on the interfaces. As an illustration for double-barrier structure we calculate I-V curves and spin-transfer torque. The calculations demonstrate the resonant character of the I-V dependences. Also, the significant difference in the magnitude of the torque acting on the various planes of the same magnetic layer is found.
Abstract: The main features determining spin-dependent transport in magnetic tunnel junctions are well appreciated now mainly due to ab initio calculations. Nevertheless, it seems useful to have a comparatively simple model which reproduces the salient characteristics of spin-dependent transport in magnetic multilayers. We present two-band tight-binding mod...
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Synthesis and Thermoelectric Study of Sb (III) Doped Bi2(Te1-Xsex)3 Thin Films by Apt
S. M. Patil,
M. M. Salunkhe,
N. B. Pawar,
P. N. Bhosale
Issue:
Volume 2, Issue 1, January 2013
Pages:
30-36
Published:
10 January 2013
Abstract: Thermoelectric study of Sb (III) doped bismuth tellurium selenide ,Bi2-x Sbx(Te1-xSex)3 thin films were done.They are deposited by Arrested Precipitation Technique (APT). These thin films were prepared using a complexing agent triethanolamine (TEA) and a reducing agent sodium sulphite to avoid hydroxide formation of bismuth precursor Bi (NO3)3 and antimony precursor (SbCl3) in aqueous medium to favor the reaction with Te2- and Se2-chalcogen ions. The preparative conditions such as pH, concentration of precursors, temperature, rate of agitation and time were finalized at initial stages of deposition. As deposited films were annealed at constant temperature (373K) in muffle furnace and then characterized for optostructural, morphological, thermoelectric and figure of merit (ZT). The results demonstrate that the Bi2-x Sbx(Te1-xSex)3 thin films prepared by APT shows band gap in the range 1.46eV to 1.89eV. X-Ray Diffraction (XRD) pattern, Scanning Electron Microscopy (SEM) images reveals that Bi2-x Sbx(Te1-xSex)3 mixed metal chalcogenide films are of nanocrystalline nature and have rhombohedral structure and better morphology. EDAX study shows good stoichiometry. Electrical and TEP study shows Sb(III) doping in Bi2(Te1-xSex)3 mixed metal chalcogenide thin films are semiconducting having p-type conduction mechanism. The highest figure of merit obtained was 0.312 and 0.569 for D1 to D5 samples.
Abstract: Thermoelectric study of Sb (III) doped bismuth tellurium selenide ,Bi2-x Sbx(Te1-xSex)3 thin films were done.They are deposited by Arrested Precipitation Technique (APT). These thin films were prepared using a complexing agent triethanolamine (TEA) and a reducing agent sodium sulphite to avoid hydroxide formation of bismuth precursor Bi (NO3)3 and...
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