Results 41 to 50 of about 4,322 (113)

Isolated FeN3 sites anchored hierarchical porous carbon nanoboxes for hydrazine‐assisted rechargeable Zn‐CO2 batteries with ultralow charge voltage

open access: yesCarbon Energy, Volume 7, Issue 1, January 2025.
Isolated FeN3 centers that anchored porous carbon substrates are reported as an efficient and stable electrocatalyst for catalyzing the reduction of CO2 to CO and hydrazine oxidation systems. The homemade hydrazine‐assisted rechargeable ZCBs assembled with the Fe‐HPCN air cathode exhibited an ultralow charge voltage (decreasing by ∼1.84 V), excellent ...
Sanshuang Gao   +7 more
wiley   +1 more source

Regional economic developments [PDF]

open access: yes
Economic indicators ; Federal Reserve District ...
Andrea Holland
core   +2 more sources

On‐Orbit Global Mode Calculation and Characteristic Analysis of Four‐Wing Flexible Satellite

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
For a flexible satellite with four solar arrays symmetrically arranged on both sides (referred to as the four‐wing flexible satellite), a solar array dynamic equation is established by incorporating the stiffness matrix of the solar array drive assembly (SADA).
Guowei Jiang   +5 more
wiley   +1 more source

N, F Co‐Doped Carbon Derived from Spent Bleaching Earth Waste as Oxygen Electrocatalyst Support

open access: yesChemPlusChem, Volume 89, Issue 12, December 2024.
N and F co‐doped carbon nanostructure (NFC) was prepared from the hazardous industrial waste of edible oil refinery, spent bleaching earth (SBE), through a straightforward and economical strategy. Electrochemical results evidenced that the Co‐NFC catalyst proved to be a valuable bifunctional competitor for oxygen reduction and oxygen evolution ...
Behzad Aghabarari   +4 more
wiley   +1 more source

Tailoring the Compositions and Nanostructures of Trimetallic Prussian Blue Analog‐Derived Carbides for Water Oxidation

open access: yesAdvanced Science, Volume 11, Issue 42, November 13, 2024.
This study proposes a precise control over the carbon nanomaterials derived from a trimetallic PBA as electrocatalysts by unraveling the structure‐morphology‐activity relationship. The epitaxial grown material (MnFeCoNC‐I‐800) maintains structural and morphological stability after carbonization.
Lujiao Mao   +7 more
wiley   +1 more source

Методология определения уменьшения высоты красочного рельефа интаглиопечати из-за износа [PDF]

open access: yes, 2014
Із застосуванням розробленої методики оцінювання зміни висоти фарбового рельєфу інтагліодруку із використанням оптичної профілометрії визначено зменшення висоти фарбового рельєфу інтагліодруку після штучного зношування. Зменшення висоти фарбового рельєфу
Kyrychok, Tetiana Yuriivna   +2 more
core  

Synthesis and vibrational spectroscopy of Fe-57-labeled models of [NiFe] hydrogenase: first direct observation of a nickel-iron interaction [PDF]

open access: yes, 2014
A new route to iron carbonyls has enabled synthesis of 57Fe-​labeled [NiFe] hydrogenase mimic (OC)​357Fe(pdt)​Ni(dppe) (pdt = 1,​3-​propanedithiolate)​. Its study by nuclear resonance vibrational spectroscopy revealed Ni-​57Fe vibrations, as confirmed by
Cramer, Stephen P.   +8 more
core   +1 more source

Incorporating Zinc Metal Sites in Aluminum‐Coordinated Porphyrin Metal‐Organic Frameworks for Enhanced Photocatalytic Nitrogen Reduction to Ammonia

open access: yesSmall, Volume 20, Issue 44, November 1, 2024.
The zinc (Zn) ion‐inserted Al‐coordinated porphyrin metal‐organic framework (Al‐PMOF) photocatalyst is designed for photocatalytic ammonia (NH3) synthesis from nitrogen reduction reaction (NRR). The enriched Zn‐N4 active sites contribute to the superior adsorption and activation of nitrogen (N2), excellent charge separation and transfer, and strong ...
Rui Liu   +7 more
wiley   +1 more source

Bandwidth enhancement of rectangular dielectric resonator antenna using circular slot coupled technique [PDF]

open access: yes, 2016
This article presents a technique to enhance the bandwidth of a rectangular dielectric resonator antenna using a circular slot. The structures are designed and simulated using CST Microwave Studio software, and it is found that the circular slot exhibits
Murad, N. A.   +2 more
core   +1 more source

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