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Articles 1 - 3 of 3
Full-Text Articles in Physics
Investigation Of Isomer Ratios In The Reactions (Γ, N) And (N, 2N) On Nuclei 76Ge And 82Se, Satimbay Palvanov, Turgunali Akhmadzhanov
Investigation Of Isomer Ratios In The Reactions (Γ, N) And (N, 2N) On Nuclei 76Ge And 82Se, Satimbay Palvanov, Turgunali Akhmadzhanov
Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences
The method of the induced activity measured the isomeric yield ratios and cross-sections ratios of reactions (γ, n) and (n, 2n) on nuclei 76Ge and 82Se. Samples of natural have been irradiated in the bremsstrahlung beam of the betatron SB-50 of National University of Uzbekistan in the energy range of 10-35 MeV with energy step of 1 MeV. For 14 MeV neutron irradiation, we used the NG-150 neutron generator of Institute of Nuclear Physics. The gamma spectra reactions products were measured with a spectroscopic system consisting of HPGe detector CANBERRA with energy resolution …
Strain Effect On The Electronic Transport Properties Of Carbyne, Gofur Eshonqulov, Golibjon Berdiyorov, Hicham Hamoudi
Strain Effect On The Electronic Transport Properties Of Carbyne, Gofur Eshonqulov, Golibjon Berdiyorov, Hicham Hamoudi
Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences
Quantum transport calculations are conducted using density functional theory in combination with Green's functional formalism to study the effect of external strain on the electronic transport properties of carbyne, 1D carbon allotrope, which has recently received a revival of interest due to its extraordinary mechanical, thermal and electronic properties. The current in the system increases monotonically by increasing the compressive strain, whereas the tensile strain results in the reduction of the charge transport. The obtained results are explained by spatial variations of the electrostatic potential along the carbon chain and nanoscale localization of the charge carriers. These findings can be …
Periodic Table Of Elements, Mendeleev's Periodic Table: History, Achievements And Problems, Boris Oksengendler, Kamil Mukimov, Renat Letfullin, Nigora Turaeva, Gulmurza Abdurakhmanov, Shavkat Yuldashev
Periodic Table Of Elements, Mendeleev's Periodic Table: History, Achievements And Problems, Boris Oksengendler, Kamil Mukimov, Renat Letfullin, Nigora Turaeva, Gulmurza Abdurakhmanov, Shavkat Yuldashev
Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences
This paper, devoted to the yubilee of Mendeleev's table, deals with a set of historical and physico-chemical problems related it. Basing on the evolutional approach to the development of the concept of “elements and structure” and up to the appearance of the notion “complexity” we discuss the applicability of Mendeleev's table to the understanding of modern aspects of science such as “nano”, “fractals”, “synergetics” and “hirality”. The problems which are open for further research are revealed and the particular importance of their development for the condensed matter science of living and nonliving matter is pointed out.