Results 111 to 120 of about 200,542 (260)

Technologies of Transition: Pottery Production and Specialization in Early Rome and Its Neighbors. Neutron Activation Analysis of Regional Assemblages and a Mineralogical‐Petrographic Study of Impasto Chiaro‐Sabbioso

open access: yesArchaeometry, EarlyView.
ABSTRACT The following paper investigates ceramic production and signs of specialization in Rome and the wider region during the early first millennium bce, through an archaeometric approach using Instrumental Neutron Activation Analysis (NAA), and complementary techniques.
Mattia D'Acri   +4 more
wiley   +1 more source

A Prediction Model for Sulfur Partition Ratio of LF Slag for Low-Carbon Low-Silicon Al-Killed Steel Refining

open access: yesTeshugang, 2011
According to the situation of over-high S content in deep drawing hot rolled DDQ class SPHE strip steel (%: ≤O. 07C, ≤0. 03Si, 0. 20 〜0. 30Mn, ≤0. 020P, ≤0. 010S, 0. 02 ~0.
孙彦辉   +3 more
doaj  

Application of Thermodynamic Calculations in the Study of Slag Melting Characteristics and Aluminum Loss Control

open access: yesMetals
According to the production process requirements of oriented silicon steel in a certain steel mill, optimization of the slag composition ratio is studied through thermodynamic calculations. The CaO-SiO2-Al2O3-FeO-MgO slag system is studied using FactSage
Ting Liu   +3 more
doaj   +1 more source

Combined Approach to Locate Medieval Fortified Manor Houses in Central Moravia (the Czech Republic)

open access: yesArchaeometry, EarlyView.
ABSTRACT A systematic prospection of medieval fortified manor houses (FMHs) in Central Moravia (Czech Republic) was conducted with the aim of mapping their distribution and facilitating both further scholarly research and more effective heritage protection by responsible institutions.
Martin Moník   +10 more
wiley   +1 more source

Zooming Into Standard Implementation: Materiality and Institutional Work in Mandatory Charity Performance Reporting

open access: yesFinancial Accountability &Management, EarlyView.
ABSTRACT Funders and regulators are challenging public benefit entities (PBEs), including charities, to improve their reporting about the difference they make for accountability and decision‐making purposes. Yet, PBEs contend that this non‐financial performance reporting is challenging to scope, measure, and report.
Cherrie Yang, Carolyn Cordery
wiley   +1 more source

Slag-steel Reactions in the Refining of Advanced High-Strength Steel

open access: yesISIJ International
Advanced high-strength steels (AHSS) typically have much higher aluminium concentrations (by an order of magnitude or more) than conventional low-carbon aluminium-killed steels. The resulting lower oxygen activity at the steel-slag interface changes the kinetics and thermodynamics of steel-slag reactions.
Su, Panwen   +2 more
openaire   +1 more source

Formation and Transformation of Spinel inclusion in Aluminium Killed Steel

open access: yesTeshugang, 2007
The formation and transformation of inclusion in aluminium killed steel during refining have been studied with extra low oxygen steel steelmaking by 140 t LD - LF - RH - CC flow sheet.
李海波   +4 more
doaj  

Refining Method for Refining Cast Iron by the Electrolysis of Slag

open access: yesRefining Method for Refining Cast Iron by the Electrolysis of Slag
application/pdf Original researches on the refining method of cast iron by the electrolysis of slag will be described in this paper. Cast iron is not so easily reduced as steel that strong deoxidizing reagents, such as alkali, alkali earth metals and Mg, are necessary to reduce cast iron melts satisfactorily.
openaire   +1 more source

Practice of Slag Washing Process by using LF Solid Abandoned Refining Slag during 120 t Converter Tapping

open access: yes, 2014
The results of process during tapping of low carbon aluminium killed steel SPHC melted in 120 t converter, by adding 2.0-2.5 kg/t ferroaluminium (49% Al) and adding 2.5-4.0 kg/t LF solid abandoned refining slag (/% : 6.29-10.33SiO219.14-29.57A12O354.69 ...
石枚梅
core  

Toward a minimal amino acid alphabet for protein design

open access: yesThe FEBS Journal, EarlyView.
Proteins are built from 20 canonical amino acids; however, it is interesting to investigate whether they can also be formed from reduced amino acid alphabets. Using protein design, we designed proteins based on all alphabets comprising 2 to 10 ‘early’ amino acids (those likely to have been present before the origin of life).
Karel Půbal   +5 more
wiley   +1 more source

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