Results 41 to 50 of about 78,694 (269)
Tracing holotype trajectories: Mapping the movement of the most valuable herbarium specimens
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
The Twentieth-Century Urals Economy in Historical Perspective [PDF]
The article discusses major works on economic history published by Urals scholars over the past few decades and outlines the main stages of their research development.
Guanshan, Ch. +2 more
core +2 more sources
Threshold Currents of Vacuum Arcs With Tungsten and Copper Cathodes
ABSTRACT This paper presents the results of an experimental study aimed at determining the threshold current for triggering a vacuum arc discharge, the probability of arc ignition and the average arc operation time depending on the current for tungsten and copper electrodes.
P. S. Mikhailov +4 more
wiley +1 more source
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
Invasive plant species in the forest parks of Yekaterinburg [PDF]
Invasive species-introduced species, spontaneously settled outside their natural range, and successfully adapted to the new growing conditions. The problem of invasive species penetration, both herbaceous and woody, has long been a concern of scientists,
Luganskaya, S. N. +2 more
core
Particular aspects of geo-ecologic assessment in geo-eco-socio-economic approach to the development of northern territories [PDF]
In today’s context, the preservation of territory’s ecosystem, when it becomes involved in the economic turnover, requires preemptive geo-ecological assessment aimed at identifying the extent of its sustainability to expected anthropogenic impact.
Semyachkov, A. I., Slavikovskaya, Yu. O.
core +1 more source
The sapphirine-spinel hornblendites of Il’meno-Vishnevogorsky complex
The authors consolidated disparate information about sapphirine-bearing rocks of the Urals. It is shown that they belong to genetically different entities.
V. G. Korinevsky +6 more
doaj +2 more sources
Abstract In the summer of 1919, W. T. Goode, the Manchester Guardian’s special correspondent in Russia and the Baltic, was arrested in the Estonian capital Tallinn and briefly detained aboard a British warship. Goode's detention caused a furore, leading to accusations of kidnap, heated commentary in the press and questions in parliament.
Colin Storer
wiley +1 more source
On the genesis of deposits of the Pervy Severny iron ore district
Research subject. This study was aimed at examining iron ore and ore-bearing strata in the Pervy Severny iron ore district in the Northern part of the Tagil depression.
G. A. Petrov
doaj +1 more source
Genetic differentiation and adaptive evolution of buff‐tailed bumblebees in Asia
This study investigates the genetic differentiation and local adaptation of the buff‐tailed bumblebee (Bombus terrestris) across its European and Asian populations. Using whole‐genome resequencing, we identified distinct genetic differences between populations, with Asian B. terrestris representing a unique genetic resource.
Long Su +14 more
wiley +1 more source

