Results 61 to 70 of about 20,501 (246)

Prospection magnétique 3D à haute résolution

open access: yesLes Nouvelles de l’Archéologie, 2015
Magnetic survey realized with the simultaneous determination of the coordinates of the magnetic field measurement, with centimeter accuracy, at rates of 10 to 20 measurements per second, opens new horizon.
François Lévêque, Vivien Mathé
doaj   +1 more source

Radiocarbon evidence for the pace of the M-/L-PPNB transition in the 8th millennium BC south-west Asia [PDF]

open access: yes, 2017
The transition from the Middle to Late Pre-Pottery Neolithic B (PPNB) happened throughout southwest Asia in the mid-8th millennium cal BC. It entailed the abandonment of a number of sites, rapid growth of others, as well as the wide spread of ...
Jacobsson, Piotr
core   +1 more source

Potential for Reducing Emissions by Regulating O2, CO, and H2O in the Recirculation Gas in Iron Ore Sintering

open access: yessteel research international, EarlyView.
This study investigates the potential for reducing emissions during the sintering process by selectively adjusting the O2, CO, and H2O content in the recirculation gas. Adjusting these components positively affects the sintering process, enabling the coke breeze content in the sinter mixture to be reduced.
Jan Eisbacher‐Lubensky   +3 more
wiley   +1 more source

Effective Equilibrium Reaction Zone Modeling of Hydrogen Plasma Smelting Reduction: A Scenario Analysis

open access: yessteel research international, EarlyView.
The study presents a dynamic zonal model for hydrogen plasma smelting reduction (HPSR) in direct current arc furnaces, predicting time‐dependent behavior of metal, slag, and off‐gas. The study considers various industrial scenarios to quantify energy demand, hydrogen utilization, degree of reduction, and other operational sensitivities.
Tristan K. Wickham   +4 more
wiley   +1 more source

Digital Atlas of Prehistoric structures: hearths, ovens and fireplaces

open access: yesIpoTESI di Preistoria, 2019
The aim of the paper is to illustrate a sharing project of an on-line digital atlas of prehistoric structures, where scholars can share the products of their research or their discoveries, enrich their mind of knowledge through several updated ...
Maurizio Cattani
doaj   +1 more source

Autism, the Integrations of 'Difference' and the Origins of Modern Human Behaviour [PDF]

open access: yes, 2009
It is proposed here that the archaeological evidence for the emergence of 'modern behaviour' (160,000-40,000 bp) can best be explained as the rise of cognitive variation within populations through social mechanisms for integrating 'different minds ...
Spikins, Penny
core   +1 more source

Development and Validation of a Next‐Generation Mechanistic Model of the Electric Arc Furnace

open access: yessteel research international, EarlyView.
This study presents a next‐generation mechanistic model of the electric arc furnace (EAF). It describes equations for all crucial processes appearing during the steel‐recycling process in an EAF, i.e., thermal, mass, and chemical. The model was parameterized and validated using industrial EAF data.
Vito Logar, Igor Škrjanc
wiley   +1 more source

Türk Ocakları and Sport in early Republican Period

open access: yesResearch in Sports Science, 2019
The nationalist movement that emerged in the west after the French Revolution affected deeply the Ottoman Empire, a multinational empire, and the political atmosphere that emerged spreads to the Turks as well as many ethnic groups. As the ineffectiveness
Sevda Korkmaz, Turgay Biçer
doaj  

Sequential Reduction of Chromite Pellets Using Hydrogen and Silicon Carbide for Carbon Emission Abatement During Ferrochrome Production

open access: yessteel research international, EarlyView.
H2 prereduction selectively metallizes Fe in UG2 chromite pellets at 1100°C, while silicon carbide becomes active at 1300°C to convert remaining Cr2O3 to carbides and promote Cr metallization. By separating the roles of H2 and SiC, the sequential route reaches up to 65.7% Cr metallization and suppresses in‐furnace CO generation by ≈75% versus ...
D. Coertzen   +5 more
wiley   +1 more source

Combustion structures between the Neolithic and Bronze Age in Eastern Sicily

open access: yesIpoTESI di Preistoria, 2019
The paper deals with the study of firing structures of different sites present in the territory between Etna and the Catania Plain. We have analyzed both sites with a prevalent ritual character and settlements and we have presented different types of ...
Orazio Palio   +2 more
doaj   +1 more source

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