Results 51 to 60 of about 3,450 (228)

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Quartz isolatings in the shales and amphibolites of the East-Ufalei zone as a source for the production of high-purity quartz raw materials (Southern Urals)

Литосфера, 2019
Research subject. In this research, we studied lenses, nodules and interlayers of granulated quartz, which are located in amphibolites and shales in the eastern part of the Ufalei gneso-amphibolite complex.Materials and methods.
M. A. Igumentseva, L. Y. Kabanova, V. N. Anfilogov, M. V. Shtenberg, I. A. Blinov, V. M. Ryzhkov   +5 more
doaj   +1 more source

Renewable Energies in Kazakhstan: Current Status, Potential, Challenges, and Opportunities

Energy Science &Engineering, EarlyView.
Kazakhstan has strong renewable energy potential, with wind as the leading resource and solar and other sources offering additional opportunities. Key challenges include limited infrastructure, investment needs, and grid‐related technical issues. Despite these barriers, renewables can boost economic diversification, enhance energy security, create jobs,
Lyailim Taizhanova, Akhmetov Berik, Samal Syrlybekkyzy, Shynar Baimukasheva, Symbat Koibakova, Nurkhat Zhakiyev, Mohammad Alhuyi Nazari, Mohamed Salem   +7 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]

, 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.
Vasiliev, S., Kovaliukh, N., Alekseev, A.Y., Cook, G., van der Plicht, J., Boltrik, Y., Kovaliukh, N.,, Bokovenko, N.A., Possnert, G., Alekseev, A.Yu., Sementsov, A., Boltrik, Yu.,, Dergachev, V.A., Skripkin, V., Cook, G.,, Dergachev, V.A.,, Sementsov, A.,, Plicht, J. van der,, Chugunov, K.A.,, Boltrik, Yu., Zaitseva, G.,, Chugunov, K.A., Zaitseva, G., Alekseev, A.Yu.,, Bokovenko, N.A.,, Skripkin, V.,, Scott, E.M., Scott, E.M.,, Vasiliev, S.,, Plicht, J. van der, Possnert, G.,   +30 more
core  

Reidite Formation From Zircon Subjected to 20, 40, and 60 GPa Shock Experiments

Journal of Raman Spectroscopy, EarlyView.
Structure disordering as a result of shock pressure: In zircon shocked from 20 to 60 GPa, the shock‐induced structural disorder increases with increasing shock pressure (gray area). Shock disorder of zircon is an integral part of its transformation to reidite: Reidite occurs after amorphous material.
Dmitry A. Zamyatin, Elizaveta Kovaleva
wiley   +1 more source

ALLANITE-(Nd) FROM SAPFIRINOVAYA PIT, SOUTHERN URALS: FIRST FIND IN RUSSIA [PDF]

, 2019
Allanite-(Nd) (Ca1.20Mn0.02Nd0.33Ce0.21Sm0.07Pr0.06La0.03Gd0.02Y0.01)Σ1.95(Al1.94Fe2+ 0.46Fe3+ 0.42Mg0.08Sc0 .06Ti0.01)Σ2.97[Si2 O7 ][SiO4 ]O(OH) was found first in Russia as black crystals and grains up to 0.12 mm in size in a sapphirine-bearing rock of
R. Škoda, A.M. Kuznetsov, A.V. Kasatkin
core  

Ethnic-Cultural Map of the Southern Pre-Urals Region in the Period Between Hungarians and the Mongols

Археология евразийских степей, 2021
The paper characterizes the ethnic-cultural situation in the Southern Cis-Urals in the 10th – 11th centuries on the basis of archaeological data. In the author's opinion, the ethnic dominant of the Ugric population remained in the forests of the region –
Ivanov Vladimir A.
doaj   +1 more source

How interference between the North Atlantic Oscillation and the tropical Indo‐Pacific convection modulates wave trains along the subtropical jet: Impacts on the Asian winter climate

Quarterly Journal of the Royal Meteorological Society, EarlyView.
This study reveals that the combined effects of the North Atlantic Oscillation (NAO) and anomalous Indo‐Pacific Walker circulation on the excitation of the wave train along the wintertime subtropical jet strongly depend on their phase combination. Their impacts interfere constructively or destructively over South Asia, leading to notable differences in
Yuki Asazuma, Masaya Kuramochi, Hiroaki Ueda   +2 more
wiley   +1 more source

About potential area of Patrinia sibirica (L.) Juss. in the Southern Urals

, 2020
Patrinia sibirica is a mountain forest-steppe species. It is also a relic of the Pleistocene complex in the Southern Urals and included into the Red Data Books of the Republic of Bashkortostan and the Chelyabinsk Oblast.
Naumova, Leniza G., Muldashev,Albert, Amina H. Galeeva, Kutueva, Aliya G., Leniza G. Naumova, Fedorov, Nikolai I., Muldashev, Albert A., Albert A. Muldashev, Aliya G. Kutueva, Galeeva, Amina H., Nikolai I. Fedorov, Fedorov,Nikolai, Kutueva,Aliya, Hamitovna,Amina, Naumova,Leniza   +14 more
core   +1 more source

Flexible parental care in a songbird correlates with sex‐specific responses to seasonal phenology, mating opportunity and reproductive success

Journal of Animal Ecology, EarlyView.
This population‐comparative study reveals that male and female parents respond differently to social and ecological conditions. This sex‐specific responsive strategy is related to the incongruent parental care systems across populations in Chinese penduline tits.
Jia Zheng, Wenni Jiang, Hui Wang, Zhengwang Zhang, De Chen, Jan Komdeur   +5 more
wiley   +1 more source