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Contribution to the Relationship Between Solar Radiation and Sunshine Duration in the Tropics: A Case Study of Experimental Data at Ilorin, Nigeria
Mean bias error mean absolute bias error root mean square erro
2010/4/13
From monthly average daily values of clearness index and relative sunshine spanning a period of two years, two equations (linear and quadratic) of the Angstrom-Prescott model have been developed for t...
Radiation Transfer for Exponential c(x)
The emergent flux Radiation transfer Modified-Eddington
2010/4/13
The emergent flux for radiation transfer in inhomogeneous half-space for exponential c(x) = 1 + ke-mx/1 + be-mx is obtained by using Modified-Eddington method, where m, b, k are constants. As a result...
Beta Spectrometers with Surface Barrier Detector and Plastic Scintillator: Applications to 90Sr,204Tl,210Pb and 14C
Beta Spectrometers Plastic Scintillator Surface Barrier Detector
2010/4/15
In this work, a comparison of responses between a spectrometer using Si Surface Barrier Detector (Si SBD) and a spectrometer using Plastic Scintillator (PS) is given. Experimental pulse height spectra...
Two-Photon Absorption in Size-Quantized Semiconductors with Degenerated Valence Band
Two-Photon Absorption Size-Quantized Semiconductors Degenerated Valence Band
2010/4/15
Two photon absorption in size-quantized films of semiconductors with degenerated band structures are investigated. The carrier energy spectrum and wavefunctions in the bands are calculated using two-b...
Zinc sulfide (ZnS) thin films of different thickness were deposited on Corning 7059 glass substrate at room temperature and high vacuum using resistive heating technique. The film properties investiga...
Properties of Ag-Doped Bi(1.6)Pb(0.4)Sr2Ca3Cu(4-x)AgxOy (2234) Oxides Prepared by S.S.R. Method
Ag-Doped Bi Solid-State-Reaction x-ray diffraction
2010/4/15
The effect of Ag-doping Bi1.6Pb0.4Sr2Ca3Cu4-xAgxOy compounds (x=0.0-1.0), prepared by conventional Solid-State-Reaction (SSR) technique, was studied using x-ray diffraction (XRD) and electrical resist...
Single Si d-Doped GaAs Investigations by New Photothermal Wavelength Modulated Photocurrent Technique
Photothermal Wavelength Modulated Photocurrent
2010/4/16
New Photothermal Wavelength Modulated Photocurrent (PWMPC) technique is reported. This technique is used for investigation of the MBE grown p-GaAs sample in which a single Si-layer was embedded with a...
Silicon-Based Optoelectronics: Progress and Challenges
Silicon-Based Optoelectronics Progress Challenges
2010/4/16
We review the status of silicon-based optoelectronics with emphasis on light emitting diodes. Erbium-doped Si, por-Si and silicon-based superlattices and nanostructures are discussed. The origin behin...
The experimental searches for photon mixing in the Okun model [1] are discussed.
Determination of Optical Constant of Materials by two Different Methods: An Application to Single Crystals Si
Optical Constant Si Single Crystals Oscillator Fit Procedure Kramers-Kronig Analysis
2010/4/15
The normal reflectance of single crystal Si was measured at 0.5 5.6 eV range by unpolarized light. Optical parameters of Si were determined from this reflectance data by using two different metho...
Gamma irradiated TSL glow curves of laboratory made phosphor samples of LaPO4:Ce, Tb exhibited one intense peak around 408 K and two smaller peaks around 508 K and 613 K. The spectrum of the first glo...
Photometric Imaging with Distributive Solar Analogy
Distributive Solar Analogy photometric
2010/4/16
The importance of DSA (Distributive Solar Analogy) when modeling starspots from a photometric data is discussed. It's advantage over the other modeling techniques to confine the solution parameters, e...
Transfer of Photometric Quantities at Arbitrary Distribution Temperatures
Bureau International Des Poids Et Measures National Institute of Metrology photometric quantities
2010/4/19
Characteristics of a photometric setup used for the measurement of photometric quantities at the National Institute of Metrology (UME) in Turkey are reported. A high accuracy method is developed to ad...
The radioluminescent proporties of silver-doped cadmium sulphide, CdS(Ag), crystals excited by 5.5 MeV a -particles from an 241Am radioactive source have been investigated. The emission spectra, decay...
Structural and Optical Characterisation of Vacuum Deposited CdTe Thin Films
Optical Characterisation Vacuum Deposited CdTe Thin Films
2010/4/19
The structural and optical properties of vacuum deposited CdTe thin films on glass substrates were investigated. The effect of the heat treatment in air over the former properties of the layers was al...
