Results 71 to 80 of about 846,481 (272)

Advances in Design Strategy and Mechanism Insights for Alkaline Hydrogen Evolution Reaction: Multilevel Site Engineering and Structure–Activity Relationship

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This review is about material design based on engineering multilevel sites from theoretical calculation and synthetic routes to mechanism, structure–activity relationship, challenges and perspectives for boosting hydrogen production in alkaline electrolyte. Electrolytic water splitting is a clean, carbon‐free method for producing green hydrogen and has
Ke Zhang   +9 more
wiley   +1 more source

Oxy-fuel fluidized bed combustion of Victorian brown coal

open access: yes, 2017
Coal contributes to almost forty percent of global power generation. As conventional coal-fired power generation technologies result in large CO2 emission, the pursuit for new technologies focuses on either reducing CO2 emission or that allows easier ...
Roy, Bithi (3773305)
core   +1 more source

CPFD Modeling of an Industrial Oxy-Fuel Cement Calciner: Hydrodynamics, Temperature Distribution, and CO2 Enrichment

open access: yesEnergies
Oxy-fuel combustion technology is a critical pathway for carbon capture in the cement industry. However, the high-concentration CO2 atmosphere significantly alters multiphysics coupling in the calciner and systematic studies on its comprehensive effects ...
Changhua Chen   +4 more
doaj   +1 more source

Air Pollution Quinones Impair Intestinal Barrier Integrity and Endoplasmic Reticulum in Differentiated Caco‐2 Cells

open access: yesJournal of Applied Toxicology, EarlyView.
ABSTRACT Particulate matter (PM) is a major global health threat, linked to millions of deaths annually. Beyond inhalation, PM components reach the gastrointestinal tract through the mucociliary escalator or contaminated food and water. Among PM's organic fraction, redox‐active quinones such as 1,2‐naphthoquinone (NQ) and 9,10‐phenanthrenequinone (PQ ...
Franco Cervellati   +6 more
wiley   +1 more source

Responses of primary producers, anoxia, and chemical feedback to Late Glacial climate change: Insights from a paired lake approach

open access: yesJournal of Quaternary Science, EarlyView.
Abstract Worldwide, lacustrine ecosystems are threatened by eutrophication and deoxygenation. Both processes are driven by the combined effects of human activities and climate change. Understanding the pre‐anthropogenic nexus between warming, eutrophication, deoxygenation, and related feedback is essential to determine how lakes respond to rapid ...
Noé R.M.M. Schmidhauser   +7 more
wiley   +1 more source

Study of in-flight and impact dynamics of non-spherical particles from HVOF guns [PDF]

open access: yes, 2009
High velocity oxygen fuel thermal spray has been widely used to deposit hard composite materials such as WC-Co powders for wear-resistant applications. Unlike gas atomized spherical powders, WC-CO powders form a more complex geometry.
Gu, Sai, S. Gu, Kamnis, S., S. Kamnis
core   +1 more source

Oxy-Fuel Combustion in FBRs

open access: yes
AbstractOxy-fuel combustion, also known as O2/CO2 combustion or oxy-fuel, is one of the most promising CO2 capture technologies for coal-fired power plants, technically or economically. Oxy-fuel combustion represents a pivotal advancement in carbon capture technologies, characterized by fuel burning in an oxygen-rich environment rather than in the air.
Lunbo Duan, Dennis Lu
openaire   +1 more source

Cold Gas Sprayed Titanium Coating for Corrosion Protection of Bipolar Plates in Proton Exchange Membrane Water Electrolysis

open access: yesMaterials and Corrosion, EarlyView.
Climate‐neutral green hydrogen is produced via water electrolysis using renewable energy. This study explores using cold gas spraying to apply titanium coatings on steel bipolar plates for proton exchange membrane water electrolyzers. The coating shows effective corrosion protection, presenting a promising solution for future designs.
Kirsten Bobzin   +3 more
wiley   +1 more source

Effect of Different Surface Treatments on Resistance to Abrasive Wear of AISI 4140 Steel

open access: yessteel research international, EarlyView.
This study investigates how different surface treatments affect resistance to abrasive wear of AISI 4140 Steel. The wear rate was significantly higher in samples subjected to conventional treatments than in samples coated using the HVOF process, demonstrating the superior efficiency of coatings applied by thermal spraying in mitigating abrasive wear ...
Everton Freitas de Oliveira   +3 more
wiley   +1 more source

Sealing Performance of Different Materials and Seal Products on Electroplated Chrome and High-Velocity Oxy-Fuel-Sprayed WC-10Co-4Cr Coatings

open access: yesLubricants
This study first assessed the friction and wear properties of two polytetrafluoroethylene materials sliding against electroplated chrome and high-velocity oxy-fuel-sprayed WC-10Co-4Cr coatings.
Minmin Zhao   +5 more
doaj   +1 more source

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