Претраживање
Приказ резултата 21-26 од 26
Classification of the asphalts and their source rock from the Dead Sea Basin (Israel): the asphaltene/kerogen vanadyl porphyrins
(Fuel, 1998)
The asphaltenes of the asphalts from the Dead Sea Basin were examined for the occurrence of vanadyl porphyrins. These examinations demonstrate that the asphalts fall into two broad class types: one which exhibits a relatively ...
Gain optimization in intersubband quantum well lasers by inverse spectral theory
(Solid State Communications, 1999)
A systematic procedure is described for the maximization of gain in optically pumped intersubband lasers, via tailoring the quantum well potential. The procedure relies on the inverse spectral theory, which enables shifting ...
Quantum well shape tailoring via inverse spectral theory: optimizing resonant second-harmonic generation
(Journal of Physics: Condensed Matter, 1998)
A procedure for the design of quantum well structures optimized as regards intersubband double-resonant second-harmonic generation is proposed. It relies on the inverse spectral theory, allowing one to start from an arbitrary ...
Investigation of the compound Hf2Ni: the electronic structure and the electric field gradient
(Journal of Physics: Condensed Matter, 1998)
The electronic structure and electric field gradient (EFG) of the intermetallic compound Hf2Ni are calculated on the basis of a recently developed first-principles band-structure full-potential (FP) linear-muffin-tin-orbital ...
Radiopharmaceutical complexes of technetium and tin: Physicochemical and biochemical research
(Journal of Radioanalytical and Nuclear Chemistry, 1999)
The list of the developed Tc-99m-kits in our research center is given, while the whole research work as a basis of Tc-99m scanning agents production is described. Research involved physico-chemical studies of both types ...
Detuned primary RF coupling system for variable frequency cyclotrons
(Nuclear Instruments and Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment, 1998)
A new concept of impedance matching for an RF amplifier coupled to a cyclotron cavity, named detuned primary coupling, is proposed. It does not require the motion of the coupling loop in vacuum and the matching for different ...