Results 81 to 90 of about 72,875 (211)

Behaviour of cerium (III) phosphate in a carbonate-alkaline medium

open access: yesЗаписки Горного института
The article investigates the behaviour of rare earth metals in carbonate-alkaline systems. The results of experimental studies on rare earth element extraction from phosphogypsum, a large-tonnage industrial waste forming in production of phosphoric acid ...
Tatyana E. Litvinova, Stepan A. Gerasev
doaj  

Catherine II, Empress of Russia, probably 1870

open access: yes, 1870
PH Coll 452.49Catherine II, Empress of Russia, 1729-1796, also known as Catherine the Great, she born Princess Sophie of Anhalt-Zerbs. She was the Empress of Russia from 1762-1796 and the country's longest ruling female leader.

core  

Maurice Tourneux, Diderot et Catherine II, Paris, 1899

open access: yes, 1899
Cahen Léon. Maurice Tourneux, Diderot et Catherine II, Paris, 1899. In: Revue d'histoire moderne et contemporaine, tome 1 N°2,1899. pp.
Cahen, Léon
core  

Study of thermodynamic processes of the Earth from the position of the genesis of hydrocarbons at great depths

open access: yesЗаписки Горного института
In the context of significant depletion of traditional proven oil reserves in the Russian Federation and the inevitability of searching for new directions of study and expansion of the raw material base of hydrocarbon raw materials in hard-to-reach ...
Oleg M. Prishchepa   +1 more
doaj  

Vie de Catherine II, impératrice de Russie,.... Tome 2

open access: yes
[Notice biographique. Catherine II (impératrice de Russie.) (français).

core  

Development of equipment and improvement of technology for inertial thickening of backfill hydraulic mixtures at the final stages of transportation

open access: yesЗаписки Горного института
The results of the study of the functioning of the developed thickening equipment as part of the stowing complex for the formation of a flow of high-concentration hydromixture are presented.
Aleksandra A. Volchikhina   +1 more
doaj  

Vasa previa with bipartite placenta and velamentous cord insertion. [PDF]

open access: yesRadiol Case Rep
Hafsi M   +6 more
europepmc   +1 more source

Vie de Catherine II, impératrice de Russie,.... Tome 1

open access: yes
[Notice biographique. Catherine II (impératrice de Russie.) (français).

core  

Geochemistry of spodumene from pegmatites of the Laghman granitoid complex, Afghanistan

open access: yesЗаписки Горного института
The article presents the first data on the rare element contents in the compositions of spodumene from pegmatites of the Laghman granitoid complex in Eastern Afghanistan, the Kolatan, Digal, Gulsalak, and Tsamgal deposits.
Aleksandr N. Evdokimov   +1 more
doaj  

Mechanochemically assembled organometallic complexes: a mechanistic study. [PDF]

open access: yesChem Sci
Hamdouna L   +13 more
europepmc   +1 more source

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