Results 61 to 70 of about 8,800 (231)

The Reduction of Group 6–8 Transition Metal Oxides with Hydrogen—From Ore Smelting to Reaction Pathways#

open access: yesEuropean Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.
As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger   +2 more
wiley   +1 more source

Structure of the Multiphase Chalcolithic Tell Chiselet–Grădiștea Fundeanca (Romania) From SH‐Wave Full‐Waveform Inversion, Borehole Geophysics and Coring

open access: yesArchaeological Prospection, Volume 32, Issue 4, Page 899-926, October/December 2025.
ABSTRACT The emergence and development of settlement mounds, also called tells, is of major interest for the analysis of socio‐economic transformations occurring in the lower Danube plain during the East European Chalcolithic period. In this context, the multiphase chronology and structural layout of tells are highly relevant indicators, but small ...
Manuel Zolchow   +11 more
wiley   +1 more source

A techno-typological analysis of fan (tabular) scrapers from Ein Zippori, Israel

open access: yesJournal of Lithic Studies, 2016
Fan (or tabular) scrapers are a diagnostic  tool type in Chalcolithic Ghassulian and Early Bronze Age lithic assemblages from  the southern Levant. To date, only small numbers of fan scrapers have been reported from the Late Pottery Neolithic Wadi Rabah ...
Katia Zutovski   +6 more
doaj   +1 more source

Primary Canine Hypoplasia in African American and Indonesian Children: Prevalence, Expression and Tooth Size

open access: yesAmerican Journal of Biological Anthropology, Volume 187, Issue 4, August 2025.
Primary canine hypoplasia is more frequent in stressed African American Gullah (12.7% teeth, 33.0% individuals) than in middle class Malay of Indonesia (3.1% teeth, 11.4% individuals). Hypoplastic defects are larger and more severe in Gullah than in Malay, confirming this defect is associated with socio‐economic status.
John R. Lukacs
wiley   +1 more source

Hypotrophic Roots of the Upper Central Incisors –a Proposed New Discrete Dental Trait

open access: yesDental Anthropology, 2012
This paper describes a newly defined nonmetric trait in the human dentition, i.e., Hypotrophic Roots of the Upper Central Incisors (HRUCI). Teeth presenting HRUCI are characterized by abnormally short roots whose crowns exhibit no apparent morphological ...
Claudia Cunha   +5 more
doaj   +1 more source

A tale of two tells : dating the Çatalhöyük West Mound [PDF]

open access: yes, 2018
The Anatolian Neolithic tell settlement of Çatalhöyük was investigated by James Mellaart in 1961–65, and by Ian Hodder and others from 1993 to 2017. Located on the Konya Plain, central Turkey, Çatalhöyük is famed for the densely-packed houses, under ...
Anvari   +19 more
core   +1 more source

The Lost Large Mammals of Arabia

open access: yesJournal of Biogeography, Volume 52, Issue 6, June 2025.
ABSTRACT Aim If successful, plans to restore the vegetation of the Arabian Peninsula (AP) as announced by the Middle East and Saudi Green Initiatives will see the greatest increase in vegetation cover since the beginning of the Holocene Humid Phase (HHP), roughly 9–10,000 years ago.
Christopher Clarke, Sultan M. Alsharif
wiley   +1 more source

O povoado pré-histórico do Outeiro Redondo (Sesimbra): resultados das campanhas de escavação de 2013 e 2014 [PDF]

open access: yes, 2017
We present the results of the archaeological excavations at the fortified Chalcolithic settlement of Outeiro Redondo, Sesimbra in 2013 and 2014. These two campaigns continued the excavations performed there between 2005 and 2008.
Cardoso, João Luís, Martins, Filipe
core   +1 more source

Sourcing african ivory in chalcolithic Portugal [PDF]

open access: yes, 2009
A recent review of all ivory from excavations in Chalcolithic and Beaker period Iberia shows a marked coastal distribution – which strongly suggests that the material is being brought in by sea.
Banerjee, Arun   +2 more
core   +1 more source

THE LATE CHALCOLITHIC CERAMICS OF THE VOLGA FOREST-STEPPE

open access: yesArchaeology, Ethnology & Anthropology of Eurasia, 2018
Chalcolithic pottery from the eastern Volga area was subjected to a technological and typological analysis. Three types are described: Chekalino; Gundorovka; and vessels with an inner rib. Chekalino vessels have a gently curved profi le; are tempered with crushed shells; and decorated with short and moderately long comb imprints and pits.
openaire   +2 more sources

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