Results 1 to 10 of about 311,267 (287)

Pegmatites in Sura and Verkhivtseve greenstone belts of the Middle Dnipro region, Ukrainian shield

Мінеральні ресурси України, 2023
Rare-metal granite pegmatites of the lithium-cesium-tantalum (LCT) type are widely distributed in Early Precambrian Greenstone belts worldwide, including the Canadian and Australian shields.
V. V. Sukach, L. V. Isakov, K. I. Hoholev, M. S. Kotenko, Yu. Ye. Khomych   +4 more
doaj   +1 more source

U-Pb age of titanite from diorit of Osnytsky Block (Volyn Megablock of Ukrainian Shield)

Геологія і корисні копалини Світового океану, 2023
The Osnytsky block is a constituent part of the Osnytsky-Mikashevytsky volcano-plutonic belt. The leading place in the geological structure of the Osnytsky block is occupied by the rock association, which includes a number of plutonic formations from ...
VYSOTSKY O.B., STEPANYUK L.M., DOVBUSH Т.І., ZIULTSLE О.V.   +3 more
doaj   +1 more source

Within-forest stand (or formation, or plot) and between-forest stand (or formation, or plot) biodiversity indices

MethodsX, 2022
The idea of entropy, which has its roots in information theory and proposes that one may measure the degree of uncertainty associated with the prediction of bits and pieces of information, has been widely used by biologists and ecologists for decades to define biological diversity.
Kyriaki Kitikidou, Elias Milios, Athanasios Stampoulidis, Elias Pipinis, Kalliopi Radoglou   +4 more
openaire   +3 more sources

U-Pb ISOTOPES GEOCHRONOLOGY BY MONAZITE OF GRANITOIDS OF KRYNYCHUVATSKY MASSIVE (INGUL MEGABLOCK OF THE UKRAINIAN SHIELD)

Геологія і корисні копалини Світового океану, 2023
Pegmatite (sample 13/10) exposed in the valley of the Berezivka River (Krynychuvatka village) was studied and its isotopic age was determined by monazite.
Stepanyuk L.M., Vysotsky O.B., Kurylo S.I., Dovbush T.I., Kovalenko N.O.   +4 more
doaj   +1 more source

GEOCHEMISTRY OF HANNIVKA GRANITES (EAST HANNIVKA MONOCLINE, MIDDLE-DNIEPER MEGABLOCK OF THE UKRAINIAN SHIELD)

Геохімія техногенезу, 2022
The Middle – Dnieper megablock, which is a fragment of archean craton, differs from other cratons on Earth by a large variety of Archean granitoids (Tok, Mokro-Moscowka, and Demurino complexes) which were formed later than the Mesoarchean TTG of sura ...
G. Artemenko, L. Shumlyanskyy, I. Shvaika, V. Butyrin   +3 more
doaj   +1 more source

Learning-by-doing or habit formation? [PDF]

Review of Economic Dynamics, 2005
Dans une étude récente, Chang, Gomes et Schorfheide (2002) élargissent le modèle type de cycles réels en y introduisant un mécanisme d'apprentissage qui permet à l'offre de travail d'influencer la productivité future. Ils constatent que ce mécanisme amplifie la propagation des chocs et affine la valeur prédictive du modèle type de cycles réels. Bouakez
Takashi Kano, Hafedh Bouakez
openaire   +1 more source

Dibrova deposit – the typical complex REE-U-Th mineralization of Azov metallogenic province of the Ukrainian shield

Мінеральні ресурси України, 2021
А new Vovchansk Uranium Ore district is allocated within the Orikhiv-Pavlohrad structural-metallogenic zone (SMZ) of the Azov metallogenic region. It is represented by Dibrova REE-U-Th deposit and a number of less studied ore occurrences.
V. V. Sukach, V. O. Shpylchak, O. V. Hrinchenko, S. M. Bondarenko, L. V. Isakov, V. O. Somka   +5 more
doaj   +1 more source

Mineral Magnetic Modification of Fine Iron Ore Tailings and Their Beneficiation in Alternating Magnetic Fields

Metals, 2023
In this paper, the properties, mineral magnetic modification, and beneficiation of tailings from the central mining and processing plant in Kryvyi Rih, Ukraine, have been studied.
Nataliia Dudchenko, Vitalii Ponomar, Volodymyr Ovsiienko, Yurii Cherevko, Ilana Perelshtein   +4 more
doaj   +1 more source

U-Pb AGE OF MONAZITE FROM HYPERSTHENIC QUARTZITE OF THE YATRAN RIVER BASIN (YATRAN BLOCK OF UKRAINIAN SHIELD)

Геологія і корисні копалини Світового океану, 2023
Among the crystalline rocks of the Middle Bug region, which are mapped as the Dniester-Bug series in the valley of the Yatran river in the area of the village Rogove, quartzites were discovered, which, unlike the quartzites of the Bug series, are mainly ...
L.M. Stepanyuk, V.O. Syomka, S.M. Bondarenko, О.V. Ziultsle, S.I. Kurylo, Т.І. Dovbush, V.V. Hulko   +6 more
doaj   +1 more source

Molybdenum mineralization of Serhiivka Au-Mo deposit (Middle Dnipro, Ukrainian Shield)

Мінеральні ресурси України, 2020
The article is devoted to molybdenum mineralization of the Eastern flank of Au-Mo Serhiivka deposit, located in the Middle Dnipro megablock of the Ukrainian Shield (USh).
V. V. Sukach, L. O. Riazantseva, V. O. Somka, S. M. Bondarenko   +3 more
doaj   +1 more source