Results 191 to 200 of about 78,610 (291)

A cryogenic Paul trap for probing the nuclear isomeric excited state 229 m Th 3 + . [PDF]

open access: yesEur Phys J D At Mol Opt Phys
Moritz D   +18 more
europepmc   +1 more source

Solvent‐Driven Pore Engineering in Coffee‐Derived Activated Hydrochar: Implications for Post‐Combustion CO2 Capture

open access: yesCarbon Energy, EarlyView.
Solvent washing of coffee‐ground hydrochars produces activated carbons with tunable pore sizes while maintaining surface area. Removing non‐polar contaminants enhances microporosity, increasing CO2 uptake by 40%. Moderate pore sizes (9–12 Å) yield optimal CO2:N2 selectivity, whereas smaller pores reduce selectivity due to stronger interactions between ...
Muhammad Irfan Maulana Kusdhany   +4 more
wiley   +1 more source

Non-volatile tuning of cryogenic silicon photonic micro-ring modulators. [PDF]

open access: yesNat Commun
Adya U   +7 more
europepmc   +1 more source

Transitioning Formamide Solvothermal Syntheses of MOFs to Less Toxic Solvents

open access: yesChemistry – A European Journal, EarlyView.
Metal‐organic Frameworks (MOFs) are commonly synthesized in toxic formamide solvents. This study investigates the synthetic factors required for effective removal of formamides across various classes of MOFs, providing a foundation for designing new sustainable MOF syntheses.
Julia C. Donovan   +2 more
wiley   +1 more source

Ambident Reactivity in the Phenyl + NO Radical Recombination

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT The recombination reaction of nitric oxide (NO) with radicals via its oxygen atom, rather than the more common nitrogen site, offers an intriguing pathway to the formation of oxynitrenes. The photochemical isomerization of nitroso compounds into their corresponding oxynitrenes may involve such a step.
Virinder Bhagat   +3 more
wiley   +1 more source

Mechanical Property Improvement of 3D-Printed rPP and vPP through Heat Treatment and Sustainable Filament Reuse. [PDF]

open access: yesACS Omega
Dagadi M   +7 more
europepmc   +1 more source

Ion–Molecule Reaction Products as Probes and Precursors for Preparative Mass Spectrometry

open access: yesChemistry – A European Journal, EarlyView.
Ion–molecule reactions in the gas phase of mass spectrometers are important for preparative mass spectrometry because they (1) provide knowledge about the intrinsic reactivity of ions, helping to predict and control their reactivity at interfaces, and (2) generate new complex ions that can be mass selected and deposited on surfaces.
Markus Rohdenburg   +4 more
wiley   +1 more source

In Situ Methanation on Mars: A Process Concept Study on the Impact of H2/CO2 and Recycle Ratio

open access: yesChemie Ingenieur Technik, EarlyView.
The rocket propellant methane can be produced on Mars by in situ resource utilization. The H2/CO2 ratio is decisive, and excess H2 is favored for providing sufficient propellant purity. The operation mode—with or without recycling of unreacted reactants—depends on the resource availability of the selected landing site. Abstract For return missions from
Franz Braun   +4 more
wiley   +1 more source

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