Results 51 to 60 of about 4,860 (196)

Thermodynamic modeling of the NbeB system [PDF]

open access: yes, 2007
In the present work, the Nb–B binary system was thermodynamically optimized. The stable phases in this system are BCC (niobium), Nb3B2, NbB, Nb3B4, Nb5B6, NbB2, B (boron) and liquid L.
Carvalho Coelho, Gilberto   +4 more
core   +3 more sources

Streets of Medieval Bolgar [PDF]

open access: yesPovolzhskaya Arkheologiya (The Volga River Region Archaeology), 2017
The article considers the topical study issues associated with the urban planning of medieval Bolgar (9th –15th cc.) – the issues of localization and organization of the street space. The results of archaeological studies allow not only to trace the layout of individual streets, but also to determine the connection of the street structure of the Golden
openaire   +2 more sources

The Stable Isotopes of Carbon and Nitrogen in the Bones of Domestic Animals from three Cities of the European Part of Russia: First Results and Interpretations

open access: yesВестник Волгоградского государственного университета. Серия 4. История, регионоведение, международные отношения, 2015
The paper outlines the results of first purposeful research on isotopic composition (carbon 13С and nitrogen 15N) in the bones collagen of domestic and wild animals from medieval towns at the European part of Russia. The published information about δ 13С
Yavorskaya Liliya Vyacheslavovna   +3 more
doaj   +1 more source

Pedo-antrocological characteristics of anthropogenically transformed soils in a case study of the Bolgar historical and archaeological complex in the Republic of Tatarstan (Russia)

open access: yes, 2021
The study was conducted within the Bolgar historical and archaeological complex in the Republic of Tatarstan, with the aim to determine contents and distribution of antrocomass, i.e., charred particles in anthropogenically transformed soils of different ...
A. Golyeva   +3 more
semanticscholar   +1 more source

“We Started Over Again, We Were Young”: Postwar Social Worlds of Child Holocaust Survivors in Montreal [PDF]

open access: yes, 2010
Thousands of child Holocaust survivors arrived in Montreal, Quebec, between 1947 and 1952, looking to remake their lives, rebuild their families, and recreate their communities. Integration was not seamless.
Sheftel, Anna, Zembrzycki, Stacey
core   +1 more source

Differences in Nanosecond Laser Ablation and Deposition of Tungsten, Boron, and WB2/B Composite due to Optical Properties

open access: yesInternational Journal of Optics, Volume 2016, Issue 1, 2016., 2016
The first attempt to the deposition of WB3 films using nanosecond Nd:YAG laser demonstrated that deposited coatings are superhard. However, they have very high roughness. The deposited films consisted mainly of droplets. Therefore, in the present work, the explanation of this phenomenon is conducted.
Tomasz Moscicki, Giulio Cerullo
wiley   +1 more source

Spanish Ceramics in the Medieval Bolgar [PDF]

open access: yesPovolzhskaya Arkheologiya (The Volga River Region Archaeology), 2016
The article addresses a series of container vessels (amphorae and pithoi) found during the recent digs on Bolgar, attributed as Spanish production. All finds come from layers and structures of 1330–1360s. Three groups can be distinguished among the Spanish imports, different in terms of their technological and morphological features. Two of them belong
openaire   +2 more sources

Modeling the Radio Background from the First Black Holes at Cosmic Dawn: Implications for the 21 cm Absorption Amplitude [PDF]

open access: yes, 2018
We estimate the 21 cm Radio Background from accretion onto the first intermediate-mass Black Holes between $z\approx 30$ and $z\approx 16$. Combining potentially optimistic, but plausible, scenarios for black hole formation and growth with empirical ...
Chang, T. -C.   +5 more
core   +4 more sources

How Tall Were the Jews?

open access: yesHistorical Studies on Central Europe, 2022
The widespread belief that the Jews were far more affluent than the non-Jews in Hungary in the decades before the Holocaust lacks sufficient empirical corroboration. The present study aims to present the income disparity between Jews and non-Jews in the
Dániel Bolgár
doaj   +1 more source

Enhanced global signal of neutral hydrogen due to excess radiation at cosmic dawn

open access: yes, 2018
We revisit the global 21cm signal calculation incorporating a possible radio background at early times, and find that the global 21cm signal shows a much stronger absorption feature, which could enhance detection prospects for future 21 cm experiments ...
Feng, Chang, Holder, Gilbert
core   +1 more source

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