Results 111 to 120 of about 2,781,888 (330)

Chemo-mechanical model for degradation of oil paintings by amorphous and crystalline metal soaps

open access: yesEuropean Journal of Mechanics - A/Solids, 2022
G.J.A.M. Eumelen   +3 more
semanticscholar   +1 more source

Tailoring an Fe–Ov–Ce–Triggered Phase‐Reversible Oxygen Carrier for Intensified Chemical Looping CO2 Splitting

open access: yesCarbon Energy, EarlyView.
A phase‐reversible CeO2‐x·Fe·CaO↔CeO2·Ca2Fe2O5 oxygen carrier is designed and synthesized with enhanced CO2‐splitting capability and robust redox durability. The engineered Fe–Ov–Ce structure acts as an initiator to induce CO₂ activation and dissociation, Fe acts as an active phase to accommodate oxygen ions from CO₂ dissociation, and CaO functions as ...
Zhao Sun   +9 more
wiley   +1 more source

Disks that are double spiral staircases [PDF]

open access: yesarXiv, 2002
What are the possible shapes of various things and why? For instance, when a closed wire or a frame is dipped into a soap solution and is raised up from the solution, the surface spanning the wire is a soap film. What are the possible shapes of soap films and why? Or, for instance, why is DNA like a double spiral staircase? ``What..?'' and ``why..?''
arxiv  

Wash water waste pretreatment system [PDF]

open access: yes
Investigations were completed on wash waters based on each candidate personal cleansing agent. Evaluations of coagulants, antifoam agents, and the effect of promising antifoams on the chemical precipitation were included.

core   +1 more source

Corn cob pyrolysis: A systematic literature review of methods and applications

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Mapping the research landscape of corn cob pyrolysis. Abstractas The agricultural sector is experiencing a surge in waste generation due to population growth, creating an urgent need to convert byproducts into value‐added products. Maize (Zea mays L.), a leading global crop, produces significant byproducts, such as corn cob, which are often undervalued.
Vilmar Steffen   +5 more
wiley   +1 more source

Lubricant effects on bearing life [PDF]

open access: yes
Lubricant considerations for rolling-element bearings have within the last two decades taken on added importance in the design and operation of mechanical systems.
Zaretsky, Erwin V.
core   +1 more source

Rethinking Chlorine: Essential Chemical or Replaceable Risk?

open access: yesChemSusChem, EarlyView.
Chlorine is essential for the production of plastics and pharmaceuticals but poses significant safety and environmental risks. Herein, processes are presented that substitute chlorine or reduce its demand. Where indispensable, trichloride‐ and bichloride‐based ionic liquids could enhance safety and streamline the integration of renewable energy ...
Johannes Schwan   +6 more
wiley   +1 more source

Supra and subgingival application of antiseptics or antibiotics during periodontal therapy

open access: yesPeriodontology 2000, EarlyView., 2023
Abstract Periodontal diseases (gingivitis and periodontitis) are characterized by inflammatory processes which arise as a result of disruption of the balance in the oral ecosystem. According to the current S3 level clinical practice guidelines, therapy of patients with periodontitis involves a stepwise approach that includes the control of the patient ...
Elena Figuero   +5 more
wiley   +1 more source

Ultramarine Blue in Edvard Munch’s Collection: A Multi-Analytical Study of Early 20th Century Commercial Oil Paints

open access: yesHeritage
The recurrence of specific deteriorating phenomena in blue paints used by Edvard Munch, observed more frequently from artworks from 1907 and onwards, calls for an analytical investigation of these paints.
Beatrice G. Boracchi   +5 more
doaj   +1 more source

Unconventional non-uniform local lattice distortion in dilute Ti-Mo solid solution [PDF]

open access: yesarXiv, 2020
The substitutional solute atom induced local lattice distortion (LLD) in dilute metal solid solution was believed to be uniform that may even be modeled by using soap bubble raft. Contrary to this conventional picture, we report in this manuscript that the Mo induced LLD in dilute Ti-Mo solid solution is highly non-uniform as evidenced by our first ...
arxiv  

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