Results 161 to 170 of about 154,233 (325)

Black holes in loop quantum gravity: The complete space-time

, 2008
We consider the quantization of the complete extension of the Schwarzschild space-time using spherically symmetric loop quantum gravity. We find an exact solution corresponding to the semiclassical theory. The singularity is eliminated but the space-time
Gambini, Rodolfo, Pullin, Jorge
core   +1 more source

Analytic reconstruction with massive particles: one-loop amplitudes for 0 → q ¯ qt t ¯ H $$ 0\to \overline{q} qt\overline{t}H $$

Journal of High Energy Physics
We present an analytic reconstruction of one-loop amplitudes for the process 0 → q ¯ qt t ¯ H $$ 0\to \overline{q} qt\overline{t}H $$ . Our calculation is a novel use of analytic reconstruction, retaining explicit covariance in the massive spin states ...
John M. Campbell, Giuseppe De Laurentis, R. Keith Ellis   +2 more
doaj   +1 more source

The cohomology of free loop spaces of rank $2$ flag manifolds [PDF]

, 2023
Matthew Burfitt, Jelena Grbić
openalex   +1 more source

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

Advanced 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, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Accelerating the learning process of deep reinforcement learning algorithms in distribution network reconfiguration using an innovative replay method

Scientific Reports
Distribution network reconfiguration (DNR) is one of the most widely employed methods for minimizing distribution network power losses with minimal investment. Most methods used for DNR are based on an accurate model.
Amirhossein Ghaemipour, Habib Rajabi Mashhadi, Seyed Hossein Mostafavi   +2 more
doaj   +1 more source

Triple Junctions as Dislocation‐Like Defects: The Role of Grain Boundary Crystallography Revealed by Experiment and Atomistic Simulation

Advanced Engineering Materials, EarlyView.
Grain boundary triple junctions are an essential ingredient of the microstructure of polycrystalline materials. In this study, a triple junction is observed using atomic‐resolution scanning transmission electron microscopy and characterized. Computer simulations reveal that the junction has a dislocation character that is determined by the joining ...
Tobias Brink, Saba Saood, Peter Schweizer, Jörg Neugebauer, Gerhard Dehm   +4 more
wiley   +1 more source

First steps of the augmented design studio: the interconnected Hybrid Ideation Space and the CI Loop

, 2011
Professional or school design studios are essential environments for design supporting free exploration of materials and representations, analogue or digital. New technologies have moved into the studio with mixed results.
T. Dorta, Y. Kalay, A. Lesage, E. Pérez
core  

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Local orbital frame predictor for LEO drag-free satellites [PDF]

, 2010
Luca Massotti, Enrico Canuto, Massotti, Luca, Canuto, Enrico   +3 more
core   +1 more source