Results 81 to 90 of about 1,337,825 (313)
Advanced Materials, EarlyView.A synthetic protocol for thermally recyclable poly(amide‐imide) aerogels based on Diels–Alder chemistry is presented. Prepared from furan‐modified poly(amide‐imide) and bismaleimide, these aerogels offer thermal superinsulation and excellent thermo‐mechanical performance.
Yufei Xiong +5 more
wiley +1 more source
, 1993 If string theory controls physics at the string scale, the dynamics of the early universe before the GUT era will be governed by the low-energy string equations of motion. Studying these equations for FRW spacetimes, we find that depending on the initial
Goldwirth, Dalia S., Perry, Malcolm J.
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Physical effects of massless cosmic strings [PDF]
Physical Review D, 2017 We study massless cosmic strings which are one-dimensional objects moving with the speed of light. Perturbations of velocities of test bodies and anisotropy of cosmic microwave background generated by massless cosmic strings are analysed. These phenomena are analogous to the string wake effect and the Kaiser-Stebbins effect for standard (massive ...
openaire +3 more sources
Advanced Materials, EarlyView.Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu +3 more
wiley +1 more source
Observational Evidence for Two Cosmological Predictions Made by Bit-String Physics [PDF]
, 2001 H. Pierre Noyes
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Proton Stability and Light $Z^\prime$ Inspired by String Derived Models
, 2011 Proton stability is one of the most perplexing puzzles in particle physics. While the renormalizable Standard Model forbids proton decay mediating operators due to accidental global symmetries, many of its extensions introduce such dimension four, five ...
Faraggi, Alon E., Mehta, Viraf M.
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Advanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.The given research presents an innovative insole‐based device employing self‐powered triboelectric nanogenerators (TENG) for flatfoot detection. By integrating TENG tactile sensors within an insole, the device converts mechanical energy from foot movements to electrical signals analyzed via machine learning, achieving an 82% accuracy rate in flatfoot ...
Moldir Issabek +7 more
wiley +1 more source
D-branes as a Bubbling Calabi-Yau
, 2007 We prove that the open topological string partition function on a D-brane configuration in a Calabi-Yau manifold X takes the form of a closed topological string partition function on a different Calabi-Yau manifold X_b. This identification shows that the
A. Iqbal +17 more
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Advanced Materials Technologies, EarlyView.Nozzle temperature of 180 °C suits well for supportless PLA stochastic scaffolds. The scaffolds exhibit higher strength and stiffness under sudden impact loading. Grading type shows significant influence on scaffold properties. Radial descending type performs best in both mechanical and permeability aspects. Graded stochastic scaffolds are suitable for
Kaushik Raj Pyla +2 more
wiley +1 more source
Advanced Materials Technologies, EarlyView.A biomimetic Jigsaw pattern infill for 3D printer has been developed. Its mechanical features with continuous carbon fiber reinforcement (CCFR) are investigated through the Design of Experiments. The Jigsaw infill minimizes mechanical strength losses caused by variability in infill density, flow rate, or carbon fiber string amount, outperforming ...
Tae‐Ho Kim +4 more
wiley +1 more source