Results 21 to 30 of about 16,003 (268)

Th e age of detrital zircon from metasedimentary rocks of the Ternuvate strata (West Azov block of the Ukrainian Shield)

Доповiдi Нацiональної академiї наук України, 2023
The Ternuvate strata comprise metamorphic rocks that make up the Haichur arcuate structure, which is about 72 km long. Its western part lies within the Andriivka fault zone, which separates the Vovcha and Huliaipole blocks, while the eastern part is ...
G.V. Artemenko, L.V. Shumlyanskyy, L.S. Dovbysh   +2 more
doaj   +1 more source

Assessment of microcomponent pollution of snow coverage of mountain tops of the Ukrainian Carpathians

Вісник Харківського національного університету імені В.Н. Каразіна. Серія Геологія. Географія. Екологія, 2021
Introduction. Today, the territory of Ukraine can be divided into urban areas and relatively clean, remote from major sources of industrial pollution, such as the Carpathian Biosphere Reserve (KBR). It should be emphasized that in this case, the analysis
Едуард Жовинський, Наталія Крюченко, Петро Папарига   +2 more
doaj   +1 more source

Re-Os age of molybdenite from the Hannivka deposit, Kryvyi Rih structure, Ukrainian Shield

Мінеральні ресурси України
This article presents the results of isotopic dating of molybdenite using the Re–Os method to determine the age of mineralization at the Hannivka deposit.
Yu. Ye. Khomych, V. V. Sukach, L. V. Shumlyanskyy, S. M. Bondarenko, V. O. Syomka, S. Tessalina, M. M. Reshetnyk   +6 more
doaj   +1 more source

Using the bioindication method for determining air pollution by heavy metals

Geo&Bio, 2022
The results of studies of chemical pollution (Pb, Zn) of perennial grasses—Elymus repens L., Artemisia absinthium L., and Hypericum perforatum L.—on background plots and within the areas of impact of industrial enterprises in Kropyvnytskyi (Ukraine) are ...
Nataliya Kryuchenko, Edward Zhovinsky, Petro Paparyga   +2 more
doaj   +1 more source

Mineralogical and geochemical characteristics of rare earth mineralisation in the Middle Dnipro region (on the example of the Kotlyarivka ore occurence)

Мінеральні ресурси України
The article presents a mineralogical, petrographic, and geochemical characterization of the rare earth mineralization of the Kotlyarivka ore occurrence, which was discovered by drill hole 114 in the south-western part of the Krynychky plagiogranite ...
V. V. Sukach, L. V. Isakov, Yu. Ye. Khomych   +2 more
doaj   +1 more source

GEOCHEMICAL TRANSFORMATION OF ENVIRONMENTAL OBJECTS WITHIN SOLID WASTE LANDFILLS (ON THE EXAMPLE OF KYIV)

Геохімія техногенезу, 2021
The presented research is devoted to the study of geochemical transformation of environmental key objects (soils, surface and groundwater) within the solid waste landfills.
I. Kuraieva, T. Koshliakova, O. Azimov, K. Zlobina, D. Khrushchov   +4 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

ENVIRONMENTAL EFFECTS OF FERROUS METALLURGY ENTERPRISES IN DONBAS: AN ECOLOGICAL AND GEOCHEMICAL STUDY

Екологія, людина, суспільство
This study presents the results of ecological and geochemical modeling of ferrous metallurgy enterprises located in the Donbas region of Ukraine. The Donetsk Metallurgical Plant, one of the oldest metallurgical enterprises in the country, was selected as
Oleksii DUDIK, Tetiana KOSHLIAKOVA, Iryna KURAIEVA, Olena LOKTIONOVA   +3 more
doaj   +1 more source

The age of monzonites of the eastern part of the Korsun-Novomirgorod pluton (Ingul megablock of the USh)

Геофизический журнал, 2015
The article presents the results of monzonites research of the eastern part of Korsun-Novomirgorod pluton. The pluton is situated in the northwestern part of the Ingul megablock.
E. Shestopalova, L.M. Stepanyuk, T. Dovbush, I.N. Kotvitskaya   +3 more
doaj   +1 more source

Machine Learning‐Supported Analysis for Predicting and Visualizing Nonlinear Relationships Between Material Properties in Electroplated Chromium Layers

Advanced Engineering Materials, EarlyView.
This study applies machine learning regression to predict chromium layer thickness in decorative trivalent chromium electroplating, using 441 experiments from laboratory‐scale (1L) and pilot‐scale (14L) setups. Tree‐based models, particularly CatBoost, outperformed linear regression by capturing nonlinear parameter interactions (R2$R^2$ up to 0.77 ...
Christoph Baumer, Christopher Mai, Luca Eisentraut, Andreas Bund, Ricardo Buettner   +4 more
wiley   +1 more source