Results 71 to 80 of about 21,338 (294)

A highly proton conductive perfluorinated covalent triazine framework via low-temperature synthesis

open access: yesNature Communications, 2023
Proton-conducting materials are essential to the emerging hydrogen economy. Covalent triazine frameworks (CTFs) are promising proton-conducting materials at high temperatures but need more effective sites to strengthen interaction for proton carriers ...
Lijiang Guan   +8 more
doaj   +1 more source

Comprehensive Characterization of 98 Chinese Cases of Genetic Creutzfeldt‐Jakob Disease With T188K Mutation

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To characterize the demographic, clinical, and laboratory features of the Chinese patients of genetic Creutzfeldt‐Jakob disease with T188K variant (T188K‐gCJD), the most common subtype of genetic prion diseases (gPrDs) in China. Methods In this nationwide retrospective study, data from 98 genetically confirmed T188K‐gCJD patients ...
Chun‐Jie Li   +11 more
wiley   +1 more source

T1 Over Squared Proton Density Ratio to Characterize Multiple Sclerosis Lesions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Differentiating remyelinated from demyelinated lesions in MS remains challenging without histological confirmation. This study introduces the T1‐to‐PD2 ratio (TPR) imaging approach and evaluates its ability to characterize MS lesions alongside other quantitative MRI (qMRI) metrics. Methods Thirty individuals with MS (mean age: 47.5 ± 
Sarah J. Wright   +10 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

open access: yesAdvanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele   +2 more
wiley   +1 more source

Vitrification-enabled enhancement of proton conductivity in hydrogen-bonded organic frameworks

open access: yesNature Communications
Hydrogen-bonded organic frameworks (HOFs) are versatile materials with potential applications in proton conduction. Traditional approaches involve incorporating humidity control to address grain boundary challenges for proton conduction. This study finds
Feng-Fan Yang   +4 more
doaj   +1 more source

High proton conduction in Ba2LuAlO5 with highly oxygen-deficient layers

open access: yesCommunications Materials, 2023
Proton conductors have found diverse applications, such as electrolytes in proton ceramic fuel cells, which require high ionic conductivity at low temperatures and high chemical stability.
Riho Morikawa   +6 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Recent advances in polyoxometalate-based proton conducting materials: Design strategies, conduction mechanisms, structure–function relationships and future perspectives

open access: yesNano Research
In recent years, the depletion risk of fossil fuels has driven increasing interest in renewable energy. Among various technologies, proton exchange membrane fuel cells (PEMFCs) stand out due to their fast startup and high power density.
Haibo Zhang   +10 more
doaj   +1 more source

Proton conductivity in ampullae of Lorenzini jelly [PDF]

open access: yesScience Advances, 2016
Researchers find the proton conductivity of jelly found in the Ampullae of Lorenzini of sharks and skates to be unusually high.
Erik E. Josberger   +6 more
openaire   +5 more sources

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