共查询到20条相似文献,搜索用时 389 毫秒
1.
2.
3.
Hrant Yeritsyan Vachagan Harutiunian Volodia Gevorkyan Norair Grigoryan Eleonora Hakhverdyan Sergey Nikoghosyan Aram Sahakyan Rudolf Gevorgyan Hakob Sargisyan Yeghis Keheyan 《Central European Journal of Physics》2005,3(4):623-635
Infrared (IR) absorption and luminescence in chemically and radiation-modified natural Armenian Zeolite (clinoptilolite) samples
have been studied. The luminescence was studied in 390–450 nm and 620–710 nm wavelength bands, and the IR measurements were
carried out in the 400–5400 cm−1 range. It is shown that the luminescence intensity depends on the content of pure clinoptilolite in the samples and, probably
on the distribution of “passive” luminescence centers over Si and Al sites that became “active” under radiation or chemical
treatment. The samples of electron irradiated clinoptilolite have higher luminescence intensity than the chemically and thermally
treated ones. A decrease in the intensity of IR absorption bands at 3550 cm−1 and 3650 cm−1 was found after irradiation. 相似文献
4.
A. I. Trokhimets 《Journal of Applied Spectroscopy》1995,62(1):88-90
Institute of Physicoorganic Chemistry, Academy of Sciences of Belarus, 220603, Minsk, Ul. Surganova, 13, Belarus. Translated
from Zhurnal Prikladnoi Spektroskopii, Vol. 62, No. 1, pp. 104–107, January–February, 1995. 相似文献
5.
6.
7.
B. M. Dzhagarov N. N. Kruk N. V. Konovalova A. A. Solodunov I. I. Stepuro 《Journal of Applied Spectroscopy》1995,62(2):285-289
Presented at the XV IUPAC Symposium on Photochemistry, Prague, July 17–22, 1994. 相似文献
8.
S. G. Nedel’ko M. A. Krysyuk A. L. Apanasenko L. N. Lymarenko Z. T. Moroz 《Journal of Applied Spectroscopy》1997,64(1):55-61
Results of a study of the effect of γ-radiation on the spectral luminescence properties of cadmium tungstate crystals doped
with silver, bismuth, and molybdenum cations are presented. Spectral characteristics of the nondnnnoped crystals are briefly
described. Absorption and photo and X-ray luminescence spectra of the crystals taken before and after exposure to γ-radiation
(5.5·104 Gy) are compared. It is found that the spectral characteristics of the crystals doped with silver, bismuth, and molybdenum
cations do not change markedly after the exposure. The relation between the type of impurity-induced defects, individual characteristics
of the impurity cations, and the character of the effect of γ-radiation on the spectral luminescence properties of impure
crystals is analyzed (preliminarily).
Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 1, pp. 55–60, January–February, 1997. 相似文献
9.
10.
N. K. Morozova E. I. Smirnova I. A. Karetnikov O. R. Golovanova V. G. Galstyan V. S. Zimogorskii 《Journal of Applied Spectroscopy》1996,63(4):543-547
Moscow Power Engineering Institute, 14, Krasnokazarmennaya Str., Moscow, GSP, 105835, Russia. Translated from Zhurnal Prikladnois
Spektroskopii, Vol. 63, No. 4, pp. 646–651, July–August, 1996. 相似文献
11.
12.
13.
14.
15.
16.
17.
The electrical and thermal resistivities of liquid gallium are calculated over a range of temperatures above the melting point
using the solutions of the Boltzmann equation. The experimental x-ray structure factor of Waseda and the form factor derived
using the Heine-Abarenkov model potential are used in these calculations. The ratio of the electrical and thermal conductivities
is calculated and compared to experimental values and to the theoretical Lorenz number. 相似文献
18.
E. B. Prokopchenko L. I. Kozhevina K. Yu. Chotii V. I. Rybachenko E. V. Titov 《Journal of Applied Spectroscopy》1995,62(1):37-40
To whom correspondence should be addressd. 相似文献
19.
Hazem Ali Attia 《Central European Journal of Physics》2005,3(4):484-507
In the present study, the unsteady Hartmann flow with heat transfer of a dusty viscous incompressible electrically conducting
fluid under the influence of an exponentially decreasing pressure gradient is studied without neglecting the ion slip. The
parallel plates are assumed to be porous and subjected to a uniform suction from above and injection from below while the
fluid is acted upon by an external uniform magnetic field applied perpendicular to the plates. The equations of motion are
solved analytically to yield the velocity distributions for both the fluid and dust particles. The energy equations for both
the fluid and dust particles including the viscous and Joule dissipation terms, are solved numerically using finite differences
to get the temperature distributions. 相似文献