Results 151 to 160 of about 222,518 (302)

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

steel 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, Stephanus P. Du Preez, Dmitri G. Bessarabov, Stephan C. Louw, Ernst L. J. Kleynhans   +4 more
wiley   +1 more source

Recycling of Mill Scale Into High‐Purity Iron Through Hydrogen‐Based Reduction

steel research international, EarlyView.
Mill scale, an iron oxide–rich steel by‐product, is difficult to recycle due to impurities. This study evaluates hydrogen‐based direct reduction and hydrogen plasma smelting reduction as low‐carbon recycling routes. Impurity segregation limits reduction kinetics. Direct reduction achieves 92% conversion in 180 min, while plasma reduction reaches 91% in
Nathalia C. Verissimo, Anumoy Ganguly, Lucas Varoto, Tim M. Schwarz, Jean‐Baptiste Letz, Ubaid Manzoor, Laurine Choisez, Dierk Raabe, Isnaldi R. Souza Filho   +8 more
wiley   +1 more source

Homo sapiens could have hunted with bow and arrow from the onset of the early Upper Palaeolithic in Eurasia. [PDF]

iScience
Kitagawa K, Tejero JM, Yeshurun R, Walter R, Huber H, Andrews R, Magliozzi N, Doyon L.   +7 more
europepmc   +1 more source

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

steel 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

Optimizing boron use efficiency and fertilization in oil palm based on tissue accumulation and nutrient recycling in the Amazonian agroecosystem. [PDF]

BMC Plant Biol
de Jesus Matos Viégas I, da Silva WDS, Costa MG, de Oliveira Ferreira EV, Pereira GL, da Silva AO, da Conceição HEO.   +6 more
europepmc   +1 more source

Double Slag Operating Standard for Mitigation of CO2 Emissions in Basic Oxygen Steelmaking

steel research international, EarlyView.
Basic oxygen furnace (BOF) steelmaking uses a double slag process (DSP) to produce low‐phosphorus steel. To reduce carbon emissions in a BOF, the hot metal ratio (HMR) must be lowered. The present article describes the optimal conditions for DSP operations under low‐HMR conditions: temperature of 1360 ± 5 °C, total Fe content of 10 ± 2 wt%, basicity (=
Kyung Hwan Kim, Joo Hyun Park
wiley   +1 more source

Intramedullary locking plates device versus headless screw fixation for treatment of hallux valgus deformity: A retrospective observational study. [PDF]

Medicine (Baltimore)
Wei YP, Chou YJ.
europepmc   +1 more source

Modeling the Thermal Properties of Hydrogen‐Based Direct Reduced Iron Using Computational Thermodynamics and Machine Learning

steel research international, EarlyView.
Hydrogen‐based direct reduced iron (H‐DRI) melts differently from scrap and carbon‐bearing DRI. This work combines differential scanning calorimetry experiments, FactSage thermodynamics, and simple composition‐based regression to predict solidus, liquidus, heat capacity, and enthalpy for H‐DRI.
Ankur Agnihotri, Petri Sulasalmi, Pasquale Cavaliere, Ville‐Valtteri Visuri   +3 more
wiley   +1 more source

Deciphering shared receptor usage in genomically unrelated bacteriophages infecting hypervirulent <i>Klebsiella pneumoniae</i> K1 ST23. [PDF]

FEMS Microbes
Selpiev Z, Leptihn S, Müsken M, Loh B.
europepmc   +1 more source

A Pedagogy of Wonder: A Spoken Word Poetic Inquiry Into the Complexities of Trauma and Teaching in TESOL

TESOL Quarterly, EarlyView.
Abstract This forum piece begins with a spoken word poem titled A Pedagogy of Wonder, performed by the author, through which the intersections of trauma, language teaching, and creative inquiry are explored. While TESOL scholarship has predominantly focused on refugee‐background or international students as “traumatized populations,” and on trauma ...
Jennifer Burton
wiley   +1 more source