Results 81 to 90 of about 2,008,247 (336)

Sulfide breccias from the Semenov-3 hydrothermal field, Mid-Atlantic Ridge: authigenic mineral formation and trace element pattern [PDF]

, 2018
The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the Semenov-3 hydrothermal field (Mid-Atlantic Ridge).
Artemyev, Dmitry, Beltenev, Victor, Danyushevsky, Leonid, Kotlyarov, Vasily, Large, Ross, Maslennikov, Valery, Maslennikova, Svetlana, Melekestseva, Irina, Nimis, Paolo, Rozhdestvenskaya, Irina, Safina, Nataliya, Toffolo, Luca   +11 more
core   +3 more sources

A Unique Ore Locality of Polyakovite-(Ce) in the Ilmeny Mountains, South Urals – New Finds

МИНЕРАЛОГИЯ (MINERALOGY), 2020
A large crystal of the rarest mineral polyakovite was discovered in 2019 in the carbonatites-pegmatites of pit № 97 of the Ilmeny Mountains. Bodies of carbonatites, glimmerites, glimmerites-pegmatites and carbonatite-pegmatites are located within a small
V. Popov, M. Rassomakhin, S. V. Kolisnichenko   +2 more
semanticscholar   +1 more source

Models and Methods for Three External Ballistics Inverse Problems [PDF]

Bulletin of the South Ural State University, Series: Mathematical Modelling, Programming and Computer Software, vol.10, no. 4, 2017, pp.78-91, 2016
We consider three problems of selecting optimal gun barrel direction (or those of selecting optimal semiaxis position) when firing an unguided artillery projectile on the assumption that the gun barrel semiaxis can move in a connected nonconvex cone having a non-smooth lateral surface and modelling visibility zone restrictions.
arxiv   +1 more source

New features of parallel implementation of N-body problems on GPU [PDF]

Bulletin of the South Ural State University, Series: Mathematical Modelling, Programming and Computer Software, 2018, v.11, No.1, p.124-136, 2018
This paper focuses on the parallel implementation of a direct $N$-body method~(particle-particle algorithm) and the application of multiple GPUs for galactic dynamics simulations. Application of a hybrid OpenMP-CUDA technology is considered for models with a number of particles $N \sim 10^5 \div 10^7$.
arxiv   +1 more source

HEMATITE-CARBONATE ROCKS OF THE YUBILEYNOE MASSIVE SULFIDE DEPOSIT (SOUTH URALS): EVIDENCE OF REPLACEMENT OF SULFIDE CLASTS AND HYALOCLASTS [PDF]

Минералогия
The article considers textural and structural features of hematite-carbonate rocks associated with carbonate-sulfide clastic ores of the Yubileynoe massive sulfide deposit, South Urals.
A.S. Tseluyko, N.R. Ayupova, D.A. Artemyev, M.A. Rassomakhin, V.A. Kotlyarov   +4 more
doaj   +1 more source

Archaeological studies In theIlmeny state reserve, South Urals [PDF]

МИНЕРАЛОГИЯ (MINERALOGY), 2020
The paper describes two stages of archeological studies at the territory of the Ilmeny State Reserve. Stage 1 is related to expedition of L.Ya. Krizhevskaya in 1961–1970, which resulted in fn-ding of more than 40 settlements and sites of the Stone Age, Bronze Age and Early Iron Age. Seven settlements were excavated.
openaire   +2 more sources

Chemostratigraphy of Neoproterozoic carbonates: implications for 'blind dating' [PDF]

, 2001
The delta C-13(carb) and Sr-87/Sr-86 secular variations in Neoproteozoic seawater have been used for the purpose of 'isotope stratigraphy' but there are a number of problems that can preclude its routine use.
Aharon P., Anthony E. Fallick, Anton B. Kuznetsov, Bowring S.A., Brand U., Brasier M.D., Brasier M.D., Brasier M.D., Burns S.J., Calver C.R., Corsetti F.A., Fairchild I.J., Fairchild I.J., Gao G., Gorokhov I.M., Gorokhov I.M., Gorokhov I.M., Grotzinger J.P., Grotzinger J.P., Hoffman P.F., Igor M. Gorokhov, Kaufman A.J., Kennedy M.J., Kirschvink J.L., Knoll A.H., Knoll A.H., Knoll A.H., Kupecz J.A., Kuznetsov A.B., Kuznetsov A.B., Lambert I.B., Magaritz M., McArthur J.M., McArthur J.M., McCulloch M.T., Melezhik V.A., Morton J.P., Ovchinnikova G.V., Pelechaty S.M., Podkovyrov V.N., Pokrovsky B.G., Pokrovsky B.G., Pokrovsky B.G., Saylor B.Z., Semikhatov M.A., Singh U., Smith L.H., Tronnes R.G., Tucker M.E., Tucker M.E., Veizer J., Veizer J., Victor A. Melezhik, Wada S.-I., Walter M.R., Wang Da-Rui   +55 more
core   +1 more source

Constructing Premaximal Binary Cube-free Words of Any Level [PDF]

EPTCS 63, 2011, pp. 168-178, 2011
We study the structure of the language of binary cube-free words. Namely, we are interested in the cube-free words that cannot be infinitely extended preserving cube-freeness. We show the existence of such words with arbitrarily long finite extensions, both to one side and to both sides.
arxiv   +1 more source

BISMUTH MINERALS OF THE NAZAROVSKOE GOLD POLYMETALLIC DEPOSIT (WESTERN TRANSBAIKALIA) [PDF]

Минералогия
The Bi mineralization is described in quartz-sulfide veins of the Nazarovskoe gold polymetallic deposit (Western Transbaikalia), which is localized within the Eravnino volcano-tectonic structure and is confined to the Nazarovskoe fault zone and the ...
Yu.A. Ryzhkova, K.A. Novoselov, M.A. Rassomakhin, E.A. Rozhkova   +3 more
doaj   +1 more source

Intensification in pastoralist cereal use coincides with the expansion of trans-regional networks in the Eurasian Steppe

, 2019
The pace of transmission of domesticated cereals, including millet from China as well as wheat and barley from southwest Asia, throughout the vast pastoralist landscapes of the Eurasian Steppe (ES) is unclear.
Makarewicz, C., Ventresca Miller, A.
core   +1 more source