Results 41 to 50 of about 59,923 (299)
Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells
Advanced Materials, EarlyView.Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park +14 more
wiley +1 more source
Nigerian Journal of Technological Development, 2019 Abundant aquatic animal by-products are available in Nigeria which include clam, oyster, rock Snail and periwinkle shells. These are usually dumped on open lands without any economic value after fleshy parts of these animals had been consumed by humans ...
D. O. Oyejobi, S. A. Raji, S. T. Aina, A. Siva
doaj +1 more source
Engineering Metal‐Pocket Cooperativity in Single‐Atom COF Nanozymes for Selective Cascade Catalysis
Advanced Materials, EarlyView.A multilevel programming strategy is developed to engineer single‐atom COF nanozymes with tunable metal centers and chiral pockets inspired by heme–pocket cooperativity. This approach enables controlled metal–pocket interplay for asymmetric cascade catalysis, delivering high activity, selectivity, and recyclability in an asymmetric oxidation–aldol ...
Ziping Li +7 more
wiley +1 more source
Electrified Acetylene Removal From Ethylene Streams Enabled by Facet‐Engineered Cu–TiO2 Interfaces
Angewandte Chemie, EarlyView.Facet‐engineered interfaces enable selective electrochemical acetylene removal from ethylene streams. Dispersed Cu nanoclusters on the titania {001} facet suppress hydrogen and coupling byproducts, while stabilizing key hydrogenation intermediates.
Aocheng Hu +6 more
wiley +2 more sources
Sensitivity and Lower Limit Detection Determined of XRF for Copper and Zinc Suspended in lubricated Grease [PDF]
Engineering and Technology Journal, 2009 In this work different weight percent of copper and zinc powders of 20 ìm particlesize were blended carefully with grease , and the final weight of samples are 2 g .
Abdulhadi K. Judran AL-Ogaili
doaj +1 more source
Differentiating the geographical origin of Ethiopian coffee using XRF- and ICP-based multi-element and stable isotope profiling [PDF]
, 2019 To test the potential of different analytical tools to determine the geographical origin of Ethiopian coffee, 103 green arabica coffee samples from four coffee regions in Ethiopia were subjected to multi-elements and delta C-13, delta N-1(5) and delta O ...
Vanhaecke, Frank +20 more
core +1 more source
Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement
Advanced Science, EarlyView.The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang +7 more
wiley +1 more source
Angewandte Chemie, EarlyView.One catalyst for two products: CO acts as a molecular trigger for adaptive alkyne hydrogenation using supported Pd nanoparticles. The catalyst reversibly switches between the formation of alkanes under H2 and Z‐alkenes under H2/CO for 37 structurally diverse alkynes.
Manisha Durai +7 more
wiley +2 more sources
Archaeometric Analyses of the Building Materials for the Karabük Ovacik Çukur Mosque
Art-Sanat, 2021 This study aims to determine the conservation status of Karabük Ovacık Çukur Mosque building materials using analytical methods. Çukur Mosque is connected to the Ovacık district of Karabük and is 12 km away from the district center.
Murat Eroğlu +4 more
doaj +1 more source
Phase Diagrams and Piezoelectric Properties of Wurtzite Al1−x−yScxGdyN Heterostructural Alloys
Advanced Science, EarlyView.This study demonstrates ferroelectricity and piezoelectric properties improvement of quaternary wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films, guided by density functional theory calculations. Wurtzite Al1−x−yScxGdyN${\rm Al}_{1-x-y}{\rm Sc}_x{\rm Gd}_y{\rm N}$ films have a high optical bandgap, enhanced piezoelectric ...
Julia L. Martin +11 more
wiley +1 more source