Results 121 to 130 of about 277,415 (327)

Fourier integral operators. II [PDF]

open access: yesActa Mathematica, 1972
Duistermaat, J. J., Hörmander, L.
openaire   +2 more sources

Structured, Shaped, or Printed Single‐Atom Catalysts and Their Applications

open access: yesAdvanced Functional Materials, EarlyView.
This paper reviews the design and use of structured single‐atom catalysts, which integrate porous architectures with the exceptional reactivity of isolated catalytic sites. It explores fabrication strategies, advanced characterization methods, and support materials that enhance thermal stability, mechanical robustness, and operational efficiency of ...
Jiachengjun Luo   +4 more
wiley   +1 more source

The geometry of supermanifolds and new supersymmetric actions

open access: yesNuclear Physics B, 2015
This is the first of two papers in which we construct the Hodge dual for supermanifolds by means of the Grassmannian Fourier transform of superforms. In this paper we introduce the fundamental concepts and a method for computing Hodge duals in simple ...
L. Castellani, R. Catenacci, P.A. Grassi
doaj   +1 more source

Hyperbranched Interpenetrating Hydrogen Bond Network (HIHBN) Proton Exchange Membrane for Fuel Cells Above 220 °C

open access: yesAdvanced Functional Materials, EarlyView.
A novel polymer electrolyte membrane with a hyperbranched interpenetrating hydrogen bond network structure is developed. The unique structure of the hyperbranched polymer contributes to a high glass transition temperature exceeding 400 °C, enabling its operation at elevated temperatures for fuel cell applications.
Lingping Zeng   +10 more
wiley   +1 more source

Interfacial Interaction‐Mediated Regulation of Metal Oxidation States for Enhanced CO2 Reduction

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid strategy is employed to optimize bismuth–oxygen interactions, precisely regulating interfacial bismuth–oxygen bonds during topochemical synthesis. This leads to vanadium oxynitride‐bismuth catalyst exhibiting high Faradaic efficiency and durability for formate production, attributed to enhanced reaction thermodynamics and kinetics.
Zhongyuan Ma   +6 more
wiley   +1 more source

f‐p‐d Gradient Orbital Coupling Induced Spin State Enhancement of Atomic Fe Sites for Efficient and Stable Oxygen Reduction Reaction

open access: yesAdvanced Functional Materials, EarlyView.
The f‐p‐d (Eu─O─Fe) gradient orbital coupling induces electron delocalization and the introduced f‐band of Eu shifts the spin state of the Fe center in FePc from low‐spin to intermediate‐spin. This strategy simultaneously enhances oxygen reduction reaction (ORR) activity, reaction kinetics, and stability, resulting in superior ORR performance and ...
Ruiqi Cheng   +7 more
wiley   +1 more source

STRESS AND STRAIN STATE IN THE ELASTIC HALF-SPACE AT A PREDETERMINED ON BORDER FORCES OR DISPLACEMENTS

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2015
The method of determination of the stress and strain state in the isotropic elastic half-space under given forces or displacements at the border based on the integration of differential equations by the operator method in combination with the Fourier ...
S G KUDRYAVTSEV, J M BULDAKOVA
doaj  

On Regular Fréchet-Lie Groups II; Composition Rules of Fourier-Integral Operators on a Riemannian Manifold

open access: yes, 1981
where $\varphi=(\varphi_{1};\varphi_{2})$ is a symplectic transformation of order 1 on $T^{*}N-\{0\}$ . Although our operators such as (1) form much narrower class than what was defined by H\"ormander [3] or Guillemin -Sternberg [2], our expression ...
Hideki. Omori, Y. Maeda, Akira Yoshioka
semanticscholar   +1 more source

Biodegradable, Humidity‐Insensitive Mask‐Integrated E‐Nose for Sustainable and Non‐Invasive Continuous Breath Analysis

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a paper‐based biodegradable, humidity‐insensitive e‐nose for real‐time breath analysis, addressing challenges in existing technologies such as humidity interference, high costs, and environmental impact. Featuring hydrophobic polymer coatings, these sensors reliably detect VOCs even in high‐moisture environments.
Indrajit Mondal   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy