Results 71 to 80 of about 2,077,960 (318)

Veronica paczoskiana is no more than a pine forest ecotype of V. spicata that evolved independently in forest‐steppes of Ukraine and the Altai region

open access: yesNordic Journal of Botany, EarlyView.
The Eurasian steppe area has been a dynamic vegetation biome during the Pleistocene with its repeated cycles of forest advances and retreats. Such a scenario allows the evolution of ecotypes at the ecotone with the potential for parallel evolution in different parts of the distribution area.
Dirk C. Albach   +4 more
wiley   +1 more source

Some problems in the study of the chronology of the ancient nomadic cultures in Eurasia (9th - 3rd centuries BC) [PDF]

open access: yes, 2002
This research is focused on the chronological investigations of ancient nomads belonging to the Scythian cultures which occupied the steppe and forest-steppe zones of Eurasia during the 9th-3rd centuries BC.
Alekseev, A.Y.   +13 more
core   +2 more sources

Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Global efforts to protect biodiversity depend on fair access to key plant specimens. This study examines the distribution of 119,361 holotypes—unique herbarium specimens used to formally describe new plant species. By linking collection and storage data, we found that holotypes are increasingly held closer to their places of origin, particularly in ...
Dominik Tomaszewski   +2 more
wiley   +1 more source

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

open access: yesМинералогия
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   +3 more
doaj   +1 more source

Assemblages of herb-dwelling spiders (Araneae) of various steppe types in Ukraine and the Central Chernozem region of Russia [PDF]

open access: yes, 2012
A total of 107 spider species from 15 families were recorded in the herbaceous vegetation of the steppe ecosystems of Ukraine and the Central Chernozem region of Russia. Araneidae, Thomisidae, Salticidae and Theridiidae were the most species-rich.
Polchaninova, Nina Y.
core   +2 more sources

The Role of Contact in Explaining Linguistic Convergence1

open access: yesTransactions of the Philological Society, EarlyView.
Abstract In this paper, I explore the question of how linguistic convergence emerges and what the role of contact might be. My case study is the spread of headed relative clauses built around wh‐relative markers in the Standard Average European languages.
Nikolas Gisborne
wiley   +1 more source

MINERALOGICAL FEATURES AND PHYSICOCHEMICAL FORMATION CONDITIONS OF VEIN MINERALIZATION OF THE SOUTHERN FLANK OF THE SAF´YANOVKA MASSIVE SULFIDE DEPOSIT (CENTRAL URALS) [PDF]

open access: yesМинералогия
The paper presents the results of studies of sulfide and fluorite veins of the southern flank of the Saf´yanovka massive sulfide deposit, Central Urals.
N.P. Safina   +5 more
doaj   +1 more source

CONTRIBUTION OF THE ILMENY MINERALOGISTS TO THE DISCOVERY OF MINERALS [PDF]

open access: yesМинералогия, 2020
The paper presents a brief review of new minerals found in the Ilmeny State Reserve beginning from the 19th century, as well as the findings of new minerals made by the researchers of the Ilmeny State Reserve and Institute of Mineralogy, South Urals ...
V.I. Popova, E.V. Belogub, V.A. Popov
doaj   +1 more source

Origin of Blue Sapphire in Newly Discovered Spinel–Chlorite–Muscovite Rocks within Meta-Ultramafites of Ilmen Mountains, South Urals of Russia: Evidence from Mineralogy, Geochemistry, Rb-Sr and Sm-Nd Isotopic Data

open access: yesMinerals, 2019
Blue sapphire of gem quality was recently discovered in spinel–chlorite–muscovite rock within meta-ultramafites near the Ilmenogorsky alkaline complex in the Ilmen Mountains of the South Urals.
E. Sorokina   +9 more
semanticscholar   +1 more source

‘Humans Are Omnipotent and Beyond Their Destiny!’ Late Soviet Perspective on Girls’ Upbringing and the Female Self

open access: yesGender &History, EarlyView.
ABSTRACT The article examines post‐Stalinist Soviet expertise on girls’ education and upbringing, analysing texts for and about female adolescents created by specialists in pedagogical sciences, psychology, sociology, medicine as well as children's writers and journalists from different parts of the Union, including national republics. The text focuses
Ella Rossman
wiley   +1 more source

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