[en] The sources of copper have been determined by studying trace elements osmium and rhenium as well as osmium isotope ratio in copper-bearing porphyry of Chuquicamata, el Teniente and Andacollo and in the stratiform copper deposits of Mantos Blancos, El Soldado, Cerro Negro and Talcuna

[en] Claims in a recent paper by Wu et al. [Phys. Rev. C 64, 014307 (2001)] for the γγ character of K^π=4⁺ bands are based on a flawed argument. A paper they do not cite has explained this weakness in detail, and concluded a dominant g boson or hexadecapole structure is required to explain other data inconsistent with the γγ description

No abstract available

[en] Osmium isotopes in the natural isotopic mixture are separation by gas centrifuge technology. OsO₄ is chosen as the process gas. The relationship γ_ij=γ₀^ΔA_ij is verified by experiments using a single centrifuge, and the real value of γ₀ is obtained by fitting. Based on this, a four-stage cascade is degigned to separate ¹⁹²Os. The results show that the abundance of ¹⁹²Os is more than 99%. (authors)

[en] The current status of the experimental studies of the osmium nuclei in the A=180 mass region at high angular momenta is reviewed. A few chosen topics, which reveal the wealth of phenomena observed in these transitional nuclei, are treated in more detail. 30 refs

[en] The second part of the book is dedicated to the 100-anniversary of academician K.I.Satpaev. It is opened out by the paper on genetic classification of petroleums of the Caspian basin and their forecast. The group of papers are devoted to new types of gold containing ores in Kazakhstan. In other papers rare earths, rhenium and osmium, titanium, iron, manganese, aluminium of Kazakhstan are characterized. Stratiform copper deposits metallogeny and condition of formation of Zhezkazgan deposit ores are discussed, metallogenic stages of the Earth evolution are considered

[en] Short Communication

[en] The neutron induced reaction cross section of eleven stable isotopes of Platinum and Osmium i.e. ¹⁹²Pt(n,α)¹⁸⁹Os, ¹⁹⁴Pt(n,α)¹⁹¹Os, ¹⁹⁵Pt(n,α)¹⁹²Os, ¹⁹⁶Pt(n,α)¹⁹³Os, ¹⁹⁸Pt(n,α)¹⁹⁵Os ¹⁸⁴Os(n,α)¹⁸¹W, ¹⁸⁷Os(n,α)¹⁸⁴W, ¹⁸⁸Os(n,α)¹⁸⁵W, ¹⁸⁹Os(n,α)¹⁸⁶W, ¹⁹⁰Os(n,α)¹⁸⁷W and ¹⁹²Os(n,α)¹⁸⁹W have been calculated by using software TALYS 1.4 in the energy range between 13MeV to 15MeV. The present situation of (n, α) reaction cross section data for the energy region just below and above the 14MeV threshold region is important for reactor technology but as of now it is still extremely little and discrepant. Thus, the precise cross- sections of all kinds of nuclear reactions are very important and necessary. The result obtained has been compared with several experimental values taken from EXFOR data file and the updated evaluated data file of ROSFOND-2010, JEFF-3.2 and JENDL-4.0. (author)

[en] The role of supersymmetries in physics is discussed. These symmetries change bosons into fermions and viceversa. The first experimentally observed example of a dynamic supersymmetry is presented. This example occurs in the spectra of nuclei in the Os-Pt region. (orig.)

[en] The mantle xenoliths of lherzolite composition from Mesozoic alkaline–ultrabasic diatremes of Jetty Oasis were studied. The treated xenoliths represent the mantle section of the East Antarctic Craton down to depths of 60–80 km. The osmium isotope composition of these nodules testifies to the beginning of the formation of the lithospheric mantle in the considered region of the craton 2400 Ma ago. The absence of any signs of Early Archeozoic lithosphere points either to partial destruction of the lithosphere at the convergent boundary of the plates in the Late Archean or to thermal erosion of the Archean lithosphere under the effect of a deep-seated plume in the Mesozoic during rift formation.