Results 21 to 30 of about 426,299 (315)

Kubo-greenwood Formula For The Exponential Absorption Region Of Amorphous Semiconductors And Distribution Of The Density Of Electronic States In The Tail Of The Conduction Band

Journal of Applied Science and Engineering, 2023
The region of exponential absorption of the spectra of amorphous semiconductors is theoretically investigated using the Davis-Mott approximation method from the Kubo-Greenwood formula.
R.G. Ikramov, Kh. A. Muminov, O.T. HolmirzaeV, B.Q. Sultonov, M.A. Nuriddinova   +4 more
doaj   +1 more source

Effect of doping on the optical properties of lanthanum-gallium tantalate [PDF]

Modern Electronic Materials, 2023
Nominally pure lanthanum-gallium tantalate La3Ga5.5Ta0.5O14 crystals doped with aluminum, silicon and gallium oxide to above stoichiometric content have been grown by the Czochralski technique in iridium crucibles in argon and in agron with addition of ...
Evgeniya V. Zabelina, Nina S. Kozlova, Oleg A. Buzanov   +2 more
doaj   +3 more sources

Laser-produced continua for absorption spectroscopy in the VUV and XUV [PDF]

, 1980
Recent work has shown that with appropriate targets, laser-produced plasmas provide clean essentially linefree continua suitable for absorption spectroscopy from 40 to 2000 Å.
O\u27Sullivan, G., Carroll, P.K., Kennedy, Eugene T., O'Sullivan, G.   +3 more
core   +1 more source

Optical absorption spectra of bipolarons [PDF]

Physical Review B, 2001
The absorption of large bipolarons is investigated using the path-integral method. The response of a bipolaron to an external electromagnetic field is derived in the framework of the memory-function approach. The bipolaron optical absorption spectrum consists of a series of relatively narrow peaks.
Devreese, J.T., Klimin, S.N., Fomin, V.M.   +2 more
openaire   +3 more sources

Identification of melamine in milk using mid-infrared spectrometry [PDF]

BIO Web of Conferences
The paper presents a study of the infrared spectra of milk with melamine in the middle spectral range. The presence of absorption bands in the infrared spectra of a standard sample of melamine, milk without it and with its addition in different ...
Kalyuzhnaya T. V., Drozd A. V.
doaj   +1 more source

CHEMICALLY MODIFIED PHOTOSYNTHETIC BACTERIAL REACTION CENTERS: CIRCULAR DICHROISM, RAMAN RESONANCE, LOW TEMPERATURE ABSORPTION, FLUORESCENCE AND ODMR SPECTRA AND POLYPEPTIDE COMPOSITION OF BOROHYDRIDE TREATED REACTION CENTERS FROM Rhodobacter sphaeroides R26 [PDF]

, 1988
Reaction centers from Rhodobacter sphaeroides have been modified by treatment with sodium borohydride similar to the original procedure [Ditson et al., Biochim. Biophys. Acta 766, 623 (1984)], and investigated spectroscopically and by gel electrophoresis.
A. Angerhofer, Beese, D., Angerhofer, A., Scheer, Hugo, Lutz, M., D. Beese, H. Scheer, Robert, B., M. Lutz, Steiner, R., R. Steiner, B. Robert   +11 more
core   +1 more source

QM/MM Benchmarking of Cyanobacteriochrome Slr1393g3 Absorption Spectra

Molecules, 2019
Cyanobacteriochromes are compact and spectrally diverse photoreceptor proteins that are promising candidates for biotechnological applications. Computational studies can contribute to an understanding at a molecular level of their wide spectral tuning ...
Christian Wiebeler, Igor Schapiro
doaj   +1 more source

Electronic spectroscopy of cold ions in a radio-frequency trap [PDF]

, 2010
The low density of ions in mass spectrometers generally precludes direct absorption measurements. The spectrum of ions can nonetheless be obtained by using resonance two-color photofragmentation or multiphoton photofragmentation techniques.
Rudnev, Vitaly S.
core   +1 more source

Analysis of Spectral Characteristics of Certain Polyene Antibiotics in the Presence of Dmso and Cholesterol

Антибиотики и Химиотерапия
This work presents ultraviolet (UV) spectra of various concentrations of polyene antibiotics. The spectra of Levorin and Amphotericin B differ in three main absorption maxima.
G. H. Sultanova, T. J. Pashazade, Kh. M. Kasumov   +2 more
doaj   +1 more source

Absorption spectra of nanodiamond aqueous dispersions by optical absorption and optoacoustic spectroscopies

Photoacoustics, 2018
The multispectral modality and technique for optically dense samples of optoacoustic spectroscopy were applied to measure spectra and high absorbances of concentrated aqueous dispersions of undoped nanodiamonds.
L.O. Usoltseva, D.S. Volkov, D.A. Nedosekin, M.V. Korobov, M.A. Proskurnin, V.P. Zharov   +5 more
doaj   +1 more source