Results 91 to 100 of about 47,027 (304)
Discretisations, Constraints and Diffeomorphisms in Quantum Gravity
Symmetry, Integrability and Geometry: Methods and Applications, 2012 In this review we discuss the interplay between discretization, constraint implementation, and diffeomorphism symmetry in Loop Quantum Gravity and Spin Foam models. To this end we review the Consistent Discretizations approach, which is an application of
Benjamin Bahr +2 more
doaj +1 more source
Advanced Functional Materials, EarlyView.The NiCuFe‐layered double hydroxides nanosheets are synthesized for facilitating nitrate‐to‐ammonia with a high ammonia yield of 1.64 mmol h−1 cm−2, Faradaic efficiency of 94.8% and stability for 15 cycles. The assembled Zn‐nitrate battery delivers a remarkable power density of 12.4 mW cm−2.
Bin Liu +9 more
wiley +1 more source
Emergent Braided Matter of Quantum Geometry
Symmetry, Integrability and Geometry: Methods and Applications, 2012 We review and present a few new results of the program of emergent matter as braid excitations of quantum geometry that is represented by braided ribbon networks.
Sundance Bilson-Thompson +3 more
doaj +1 more source
Some Considerations on Discrete Quantum Gravity
, 2012 Recent results in Local Regge Calculus are confronted with Spin Foam Formalism. Introducing Barrett-Crane Quantization in Local Regge Calculus makes it possible to associate a unique Spin $j_{h}$ with an hinge $h$, fulfilling one of the requirements of ...
Gionti, Gabriele, J, S.
core +1 more source
Theory‐Guided Design of Non‐Precious Single‐Atom Catalyst for Electrocatalytic Chlorine Evolution
Advanced Functional Materials, EarlyView.To overcome the reliance on noble metals for the chlorine evolution reaction (CER), we designed a non‐precious single‐atom catalyst (SAC), NiN3O–O. It achieves a low overpotential of 75 mV, 95.8% Cl2 selectivity, and outperforms commercial dimensionally stable anodes (DSAs).
Kai Ma +9 more
wiley +1 more source
Equivalent and Alternative Forms for BF Gravity with Immirzi Parameter
Symmetry, Integrability and Geometry: Methods and Applications, 2011 A detailed analysis of the BF formulation for general relativity given by Capovilla, Montesinos, Prieto, and Rojas is performed. The action principle of this formulation is written in an equivalent form by doing a transformation of the fields of which ...
Merced Montesinos, Mercedes Velázquez
doaj +1 more source
Advanced Healthcare Materials, EarlyView.Aerosol jet printing enables rapid, customizable fabrication of flexible, fully gold multi‐electrode arrays (MEAs) for organotypic bioelectronic interfaces. The printed MEAs exhibit stable electrochemical performance, cytocompatibility, and functionality in recording and stimulation, including integration with 3D‐printed constructs.
Ernest Cheah +7 more
wiley +1 more source
Spin foam model from canonical quantization
, 2007 We suggest a modification of the Barrett-Crane spin foam model of 4-dimensional Lorentzian general relativity motivated by the canonical quantization. The starting point is Lorentz covariant loop quantum gravity. Its kinematical Hilbert space is found as
C. Rovelli +6 more
core +3 more sources
AI‐Assisted Design and Evaluation of SLM‐Ti64 Implants for Enhanced Bone Regeneration
Advanced Healthcare Materials, EarlyView.AI‐driven simulations of biological healing, combining biomechanical modeling and machine learning, enable personalized orthopedic treatments. By decoding healing patterns influenced by implants and patient‐specific factors, this approach advances fracture repair understanding, optimizes implant design, and supports precision medicine and sustainable ...
Muhammad Usama Zaheer +3 more
wiley +1 more source
State‐of‐the‐Art, Insights, and Perspectives for MOFs‐Nanocomposites and MOF‐Derived (Nano)Materials
Advanced Materials, EarlyView.Different approaches to MOF‐NP composite formation, such as ship‐in‐a‐bottle, bottle‐around‐the‐ship and in situ one‐step synthesis, are used. Owing to synergistic effects, the advantageous features of the components of the composites are beneficially combined, and their individual drawbacks are mitigated.
Stefanos Mourdikoudis +6 more
wiley +1 more source