Impact of Electron-Beam Radiation on Electrical Properties of Pb1-xMnxTe Epitaxial Films
Issue:
Volume 1, Issue 1, December 2016
Pages:
1-5
Received:
1 November 2016
Accepted:
14 November 2016
Published:
17 December 2016
DOI:
10.11648/j.ns.20160101.11
Downloads:
Views:
Abstract: It has been obtained Pb1-xMnxTe (x=0.04) epitaxial films on BaF2 substrates at 10-4Pa vacuum by molecular beam condensation method and studied the impact of electron-beam radiation on their electrical properties. From temperature dependence curves of electrical conductivity it has been determined that the electrical conductivity decreases with an increase of Mn concentration. İnfluence of electron flux Ф=2·1015см-2 (E=4.5MeV,) leads to a decrease of electrical conductivity due to the compensation of local level, further increase of radiation dose up to Ф=1016см-2 increases the electrical conductivity. It has been investigated the impact of electron-beam radiation on VAC.
Abstract: It has been obtained Pb1-xMnxTe (x=0.04) epitaxial films on BaF2 substrates at 10-4Pa vacuum by molecular beam condensation method and studied the impact of electron-beam radiation on their electrical properties. From temperature dependence curves of electrical conductivity it has been determined that the electrical conductivity decreases with an i...
Show More
Effect of Aged Garlic Extract on Prodromal Phase After Acute Radiation Syndrome
Kouam Foubi Brice Bertrand,
Chuisseu Djamen Dieudonné Pascal,
Dzeufiet Djomeni Paul Désiré,
Samba Ngano Odette,
Mouelle Sone,
Ongolo Zogo Pierre,
Dong à Zok Faustin,
Yomi Jean,
Juimo Alain George,
Nko’o Amvene Samuel,
Tiedeu Alain Bertin,
Gonsu Fotsin Joseph
Issue:
Volume 1, Issue 1, December 2016
Pages:
6-17
Received:
24 October 2016
Accepted:
23 November 2016
Published:
27 December 2016
DOI:
10.11648/j.ns.20160101.12
Downloads:
Views:
Abstract: Acute radiation syndrome results in 4 four phases among which the prodromal one characterized by malaise, diarrhea, vomiting, and anorexia. It last a few hours, but from irradiation to the 7th day after, some other signs (unspecified, mild, moderate or severe) are observed. Thus, the aim of this study was to assess if Aged garlic extract (AGE) could offer radioprotection by preventing signs of prodromal phase after acute radiation syndrome. Knowing, AGE is a natural product containing different compounds with antioxidant activity and possessing several physiological activities in experimental animals. Eight groups, five healthy male rats each were used (20 irradiated and 20 Sham Irradiated), among which some were receiving via gavages distilled water, the others AGE at different doses (25 mg/kg and 50 mg/kg) and the rest vitamin E + Alpha Lipoïc Acid. The signs observed and evaluated (behavioral changes, salivation, state stool, water and food intake, weight loss, relative weight of organs, fatigue/weakness, temperature and bleeding) revealed a significant change in irradiated groups although AGE-pretreated rats prior and after irradiation revealed significant amelioration in radiation-induced disturbances. Therefore AGE can be considered having radioprotective effects against radiation-induced changes in prodromal phase signs.
Abstract: Acute radiation syndrome results in 4 four phases among which the prodromal one characterized by malaise, diarrhea, vomiting, and anorexia. It last a few hours, but from irradiation to the 7th day after, some other signs (unspecified, mild, moderate or severe) are observed. Thus, the aim of this study was to assess if Aged garlic extract (AGE) coul...
Show More
Multipole Mixing Ratio, (E2/M1), and Electric Monopole Strength, (E0/E2), for γ-Transitions in 192Pt
Salah A. Eid,
Sohair M. Diab
Issue:
Volume 1, Issue 1, December 2016
Pages:
18-23
Received:
29 October 2016
Accepted:
18 November 2016
Published:
10 January 2017
DOI:
10.11648/j.ns.20160101.13
Downloads:
Views:
Abstract: The low-lying collective states in 192Pt are investigated in the frame work of the interacting boson approximation model IBA-2. The contour plot of the potential energy surfaces, V(β, γ), shows an O(6) character to the nucleus. B(M1), B(E2), δ(E2/M1) and X(E0/E2) were calculated and reasonable agreement has obtained to the available experimental data. Also, sharp upper bending is observed at I+=10.
Abstract: The low-lying collective states in 192Pt are investigated in the frame work of the interacting boson approximation model IBA-2. The contour plot of the potential energy surfaces, V(β, γ), shows an O(6) character to the nucleus. B(M1), B(E2), δ(E2/M1) and X(E0/E2) were calculated and reasonable agreement has obtained to the available experimental da...
Show More
Using of 53Mn and 10Be Cosmogenic Isotopes for Geochronology and Monitoring of Cosmic Rays in Terrestrial Rocks
V. E. Yants,
S. G. Lebedev,
N. M. Sobolevsky
Issue:
Volume 1, Issue 1, December 2016
Pages:
24-28
Received:
2 December 2016
Accepted:
26 December 2016
Published:
19 January 2017
DOI:
10.11648/j.ns.20160101.14
Downloads:
Views:
Abstract: The article discusses the methods of measuring the accumulation of radioactive isotopes 53Mn (with a half-life of T = 3.7 million years) and 10Be (T = 1.6 million years) in the iron-containing rocks. Knowledge of accumulation dynamics of these two isotopes would allow knowing both the time of shielding and flux of cosmic rays and also changes assessing the variations in the intensity of cosmic rays, the timing of glaciations, geological changes, and climatic processes in the world in retrospect of 0.1-10 million years. The main attendance paying to neutron - activation method of isotope analysis as low-cost both in money and time and more adapted for numerous sample processing. The advantages of isotope measurements in lunar craters are emphasized.
Abstract: The article discusses the methods of measuring the accumulation of radioactive isotopes 53Mn (with a half-life of T = 3.7 million years) and 10Be (T = 1.6 million years) in the iron-containing rocks. Knowledge of accumulation dynamics of these two isotopes would allow knowing both the time of shielding and flux of cosmic rays and also changes asses...
Show More
