Results 111 to 120 of about 2,082,070 (319)

ABOUT THE COMPOSITION OF CASSITERITE AND WOLFRAMITE IN ORES FROM THE FAR EAST DEPOSITS [PDF]

open access: yesМинералогия
The paper presents formulas, which reflect the variations in the composition of cassiterite, wolframite (ferberite and hübnerite) and associated minerals (silicates, phosphates, tantaloniobates, sulfides, etc.) from the Maly Khingan tin deposits (Khingan
V.I. Popova, V.A. Popov, I.A. Blinov
doaj   +1 more source

External water exchange of reservoirs of South Ural

open access: yesIOP Conference Series: Earth and Environmental Science, 2019
Abstract Reservoirs are building worldwide for the rational usage of water resources. Engineers create reservoirs for redistribution of runoff both in seasonal and multi-annual regime. The duration of stay of river water in slow water exchange condition is one of the major factors which influences the transformation of the river water ...
A I Vtorova   +2 more
openaire   +1 more source

Regional differentiation of human potential indicators [PDF]

open access: yes, 2016
The purpose of the study presented in this article is an interregional analysis of human potential. The quality of the population proper is investigated at the regional level far less than the quality of the population life.
Loksov, V. V.   +2 more
core   +3 more sources

Oil and Product Price Dynamics in International Petroleum Markets [PDF]

open access: yes
In this paper we investigate crude oil and products price dynamics. We present a comparison among ten price series of crude oils and fourteen price series of petroleum products, considering four distinct market areas (Mediterranean, North Western Europe,
Alessandro Lanza   +2 more
core  

Natural radioactive elements (TH, U) in fresh water salt sediments [PDF]

open access: yes, 2016
The article is a summary and review of data on TH and U content in salt deposits of natural fresh water in South Siberia, the Urals and Kazakhstan.
Арынова, Ш. Ж.   +3 more
core  

On the ecology of species belonging to the genus Mesocyclops Sars (Crustacea, Copepoda) dwelling in the water-bodies of the Urals and Pri-Ural territory. [Translation from: Zoologicheskie Zhurnal 44(1) 127-130, 1965. ] [PDF]

open access: yes, 1973
In the waterbodies of central Russia, the Urals and western Siberia four species of Crustacea, related to the genus Mesocyclops, are widely distributed: M. (s.str.) leuckarti (Claus), M. (Thermocyclops) oithonoides Sars, [M.](Th.) crassus (Fisch.) and M.
Ulomskii, S.N.
core  

Home - About - Disclaimer - Privacy