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Digitally graded GaAs/Al0.44Ga0.56As quantum-cascade laser
(Elsevier, Amsterdam, 2003)
A method for the optimal design and realization of a GaAs/Al0.44Ga0.56As quantum-cascade laser (QCL) is presented. Firstly, an optimal, smooth active region profile is derived, using inverse spectral theory. A digitally ...
What does current web-based education lack?
(International Journal of Computers and Applications, 2003)
Current web-based education has its limitations, most of which can be divided into three categories: conceptual, technological, and tool related. This article describes the three categories in detail and discusses possible ...
AN EXPLICIT CALCULATION OF RELATIVE SURFACE DEFORMATION DURING BURSTING TEST OF FABRICS
(The Society of Chemists and Technologists of Macedonia, 2003)
A mathematical approach to the setting of a new model of knitted and other loose textile surfaces deformation during a ball-bursting test is presented. The dependence of ball traverse length is defined in an implicit ...
Leaching of copper(I) sulphide by sulphuric acid solution with addition of sodium nitrate
(Elsevier, Amsterdam, 2003)
Finely grained samples of copper(I) sulphide were leached by H2SO4 solution with added NaNO3. The occurrence probability of chemical reactions was analysed based on literature data and products which were formed during the ...
Biomarkers of oil-type pollutants in surface soil
(Parlar Scientific Publications (P S P), Freising, 2003)
In this paper, biomarkers were applied for identification of oil-type pollutants in surface soil and their microbial changes were investigated. Samples were taken at destroyed fuel storage in Nis (Yugoslavia). Steranes, ...
Analysis of fatigue and crack growth in carbon-fiber epoxy matrix composite laminates
(Strength of Materials, 2003)
A study of high frequency fatigue in carbon-fiber reinforced composites has been undertaken. A comparison has been made between the fatigue behavior of crossply (0 / 90) and angleply (± 45) carbon/epoxy unnotched and notched ...
The kinetics of the hydrogen evolution reaction on zinc in EDTA solutions in the pH 3-10 range
(Elsevier Science Sa, Lausanne, 2003)
Polarization curves of the hydrogen evolution reaction on zinc were obtained in Ethylenediaminetetraacetic acid (EDTA) solutions of different total molar concentrations (0.05, 0.10, 0.15 and 0.20 mol dm(-3)), the pH values ...
The effect of segment length on some properties of thermoplastic poly(ester-siloxane)s
(John Wiley and Sons Ltd, 2003)
A series of novel thermoplastic elastomers, based on poly(dimethylsiloxane) (PDMS) as the soft segment and poly(butylene terephthalate) (PBT) as the hard segment, were synthesized by catalyzed two-step, melt transesterification ...