Báo cáo vật lý: "PHONON SPECTRA OF HIGH TEMPERATURE SUPERCONDUCTOR Bi2Sr2Ca2Cu3O10: THEORY AND EXPERIMENT" potx

... page) Journal of Physical Science, Vol. 17(2), 51–66, 2006 51 PHONON SPECTRA OF HIGH TEMPERATURE SUPERCONDUCTOR Bi 2 Sr 2 Ca 2 Cu 3 O 10 : THEORY AND EXPERIMENT S. Mohan* and P. Murugesan ... through Raman and infrared spectra. Hence a theoretical evaluation of phonon frequencies of high temperature superconductors assumes importance. The Fourier trans...

Ngày tải lên: 07/08/2014, 14:20

... all of the samples were immersed for 60 min over a frequency range of 100 kHz–1 Hz with a signal amplitude perturbation of 5 mV and a scan rate of 1 mVs –1 . Next, it was fitted with sets of ... concentration of 0 ppm and 10 ppm. The colour changes of dark blue magnetite were observed for the rest of the concentrations. This means that the protective film of a stable...

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... steam. Most of this water ends up in POME. For each kg of palm oil, roughly 1 kg of wet EFB is produced. As over 60% of the wet EFB consists of water, and the heating value of the dry EFB ... day), of which 16 million tonnes (321,000 barrels) per day were exported. The domestic petroleum demand of 26 million tonnes represented 44% of the total energy demand of 60...

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... composed of ferum Journal of Physical Science, Vol. 18(1), 75–85, 2007 75 WEAR MECHANISM OF TiN, TiAlN AND TiCN COATED DRILLS DURING DRILLING OF CARBON STEEL R.J. Talib*, M.R.M. Toff and ... piece as a result of broken cutting lip and land, and blunting-off chisel wedge. 6. ACKNOWLEDGEMENTS The authors are grateful to the Government of Malaysia for the fun...

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... emission from high porosity structures arises from quantum confinement effects as a result of the conversion of the material band gap from indirect to direct and consequently high photoluminescence ... its bulk indirect band gap. 15–16 The confinement of electrons and holes in quantum wires of GaP in the porous layer was proposed as the origin for the blue and UV emiss...

Ngày tải lên: 07/08/2014, 14:20

... humidity, temperature, and etc. 7. ACKNOWLEDGEMENT The authors would like to thank the Director of the ONM (Office of National Meteorology of Algiers), for making available the database of ... sizing of sand-alone PV systems: A review and a proposed new method. Solar Energy Materials and Solar Cells, 26, 51–69. 21. Shrestha, G.B. & Goel, L. (1998). A study on...

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... independent of temperature for all liquids, ∑ = iieff mxM where, x is the mole fraction and m is the molecular weight of i th component and A E stands for excess property of any given ... components of the system. Amalendu Pal et al. 5 have made an attempt to study the speed of sound and isentropic compressibilities of mixtures containing polyethers and ethyl a...

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... Estimator of parameter , −rd γ 1 ˆ () − ′ ′′ = rrr rr ′ γ T TZZT TZY is the PCRE of parameter , is the remaining eigenvectors of γ r T ′ ZZ after having deleted of the columns of and satisfying ... advantages of the ORRE and the Shrunken Estimator. The Class Estimator combined the techniques of the ORRE and the PCRE while the Class Estimator combined the techniqu...

Ngày tải lên: 07/08/2014, 14:20

... number of particles in a given mass of sample depends on the size distribution of the components. Thus, for a binary mixture of spherical particles of components A and B with proportions of P A ... and P B , respectively, the number of particles of A or B per unit mass of component A or B, respectively is given by Equation (4). B ⎤ ⎥ ⎦ Mass of particles in Numb...

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... FTIR spectra of chestnut tannins with respect to time of immersion. initially began to reduce after two weeks of immersion and almost disappeared after three and four weeks. The degree of transformation ... as mangrove, quebracho and mimosa consist of oligimers and polymers of flavanoids while hydrolysable tannins such as chestnut are made up of sugars (primarily...

Ngày tải lên: 07/08/2014, 14:20