Results 91 to 100 of about 2,082,070 (319)

GENETIC DIVERSITY OF SIBERIAN STONE PINE UNDER INTRODUCTION IN THE SOUTH URALS AND BASHKIR CIS-URALS

Сибирский лесной журнал, 2016
Allozyme polymorphism of Siberian stone pine Pinus sibirica Du Tour has been studied in 14 artificial stands in the South Urals and Bashkir Cis-Urals on the base of 7 gene-enzyme system analysis. The following values of genetic diversity are determined: mean number of alleles per locus (A) constitutes 1.69±0.08; portion of polymorphic loci (P95) – 50.0
Z. Kh. Shigapov, K. V. Putenikhina, A. I. Shigapova, K. A. Urazbakhtina, V. P. Putenikhin   +4 more
openaire   +2 more sources

Reconstructing Environmental and Microbial Ecosystem Changes Across the Permian–Triassic Mass Extinction at Lusitaniadalen, Svalbard

Paleoceanography and Paleoclimatology, Volume 41, Issue 2, February 2026.
Abstract The Permian–Triassic environmental crisis triggered fundamental changes in marine ecosystems, culminating in the most severe biodiversity crisis of the Phanerozoic. Yet, the environmental and geochemical conditions governing the crisis and ecosystem recovery remain debated.
S. Z. Buchwald, A. B. Frank, D. Birgel, K. Senger, T. Mosociova, Y. Pei, B. Beaty, L. G. Tarhan, F. Galasso, M. A. Gómez Correa, S. E. Grasby, U. Struck, D. Yuan, R. Steinkrauss, J. Gliwa, N. Lahajnar, J. Peckmann, W. J. Foster   +17 more
wiley   +1 more source

GOLD IN WEATHERING MANTLE OF THE GUIANA SHIELD (SOUTH AMERICA) [PDF]

Минералогия, 2019
The article describes mineral composition of laterite weathering mantle overlapping the Amamuri and Kontakt gold deposits in the greenstone rocks, located 20 km southeast of the Aurora deposit (reserves of 185 tons Au, Republic of Guyana).
E.E. Palenova, K.A. Novoselov, E.V. Belogub   +2 more
doaj   +1 more source

Biological Flora of Britain and Ireland: Geranium sylvaticum*

Journal of Ecology, Volume 114, Issue 2, February 2026.
Geranium sylvaticum is a perennial forb of upland grasslands, woodlands and riverbanks in northern Britain, with scattered native occurrences also in Wales, central England and Northern Ireland. It has an extensive native range in Europe and Asia. The species is gynodioecious, with individual plants typically female or hermaphrodite.
Markus Wagner, Richard G. Jefferson, Ruth E. Starr‐Keddle, Sandra Varga, Irina Tatarenko, Duncan B. Westbury, Lucy Hulmes   +6 more
wiley   +1 more source

Trace Elements of Cu-(Fe)-Sulfide Inclusions in Bronze Age Copper Slags from South Urals and Kazakhstan: Ore Sources and Alloying Additions

, 2019
In the paper, the results of an investigation into trace elements found in slag sulfides from 14 archaeological Bronze Age settlements of the Cis-Urals, Trans-Urals, and North and Central Kazakhstan are presented.
D. A. Artemyev, M. Ankushev
semanticscholar   +1 more source

Zn(NH3)2Cl2, a Mineral-like Anthropogenic Phase with Ammine Complexes from the Burned Dumps of the Chelyabinsk Coal Basin, South Urals, Russia: Crystal Structure, Spectroscopy and Thermal Evolution [PDF]

, 2023
Andrey A. Zolotarev, Margarita S. Avdontceva, Rezeda M. Sheveleva, Igor V. Pekov, Natalia S. Vlasenko, Vladimir N. Bocharov, Maria G. Krzhizhanovskaya, Anatoly A. Zolotarev, M.A. Rassomakhin, Sergey V. Krivovichev, Mikhail A. Rassomakhin, Sergey V. Krivovichev   +11 more
openalex   +1 more source

Dispersion Analysis of Silver Thiogallate in a Broad Mid‐Infrared Range

Advanced Photonics Research, Volume 7, Issue 1, January 2026.
This study presents precise refractive index measurements of AgGaS2 crystal in the extended mid‐infrared region. Corrected Sellmeier equations are introduced, broadening the use of silver thiogallate for nonlinear frequency‐conversion. The results enable accurate modeling of nonlinear‐optical processes and facilitate further development and ...
Evgeniy S. Zatsepin, Artem S. Sabanin, Dmitriy V. Badikov, Sergei P. Kulik, Anna V. Paterova   +4 more
wiley   +1 more source

Tree Stands and Their Productivity Dynamics at the Upper Growing Limit in Khibiny on the Background of Modern Climate Changes [PDF]

, 2019
Within the ecotone of the upper limit of woody vegetation on the southeastern macroslope of the Khibiny Mountain ridge (Kola Peninsula), the spatial and age structure, as well as features of the phytomass accumulation of spruce–birch stands, were studied.
Bubnov, M. O., Devi, N. M., Fomin, V. V., Galimova, A. A., Moiseev, P. A.   +4 more
core  

Sulfide breccias from the Semenov-3 hydrothermal field, Mid-Atlantic Ridge: authigenic mineral formation and trace element pattern [PDF]

, 2018
The aim of this paper is the investigation of the role of diagenesis in the transformation of clastic sulfide sediments such as sulfide breccias from the Semenov-3 hydrothermal field (Mid-Atlantic Ridge).
Artemyev, Dmitry, Beltenev, Victor, Danyushevsky, Leonid, Kotlyarov, Vasily, Large, Ross, Maslennikov, Valery, Maslennikova, Svetlana, Melekestseva, Irina, Nimis, Paolo, Rozhdestvenskaya, Irina, Safina, Nataliya, Toffolo, Luca   +11 more
core   +3 more sources

Trace-element geochemistry of molybdenite from porphyry Cu deposits of the Birgilda-Tomino ore cluster (South Urals, Russia)

Mineralogical magazine, 2018
Mineralogical, electron microprobe analysis and laser ablation-inductively coupled plasma-mass spectrometry data from molybdenite within two porphyry copper deposits (Kalinovskoe and Birgilda) of the Birgilda-Tomino ore cluster (South Urals) are ...
O. Plotinskaya, V. Abramova, E. Groznova, S. Tessalina, R. Seltmann, J. Spratt   +5 more
semanticscholar   +1 more source