Results 141 to 150 of about 707,832 (374)
Smart Sampling Capsule for Capture and Detection of Enteric Pathogens in the Small Intestine
Advanced Materials Technologies, EarlyView.An ingestible smart sampling capsule for capturing asymptomatic enteric pathogens at their primary sites of interaction within the small intestine. This capability enables non‐invasive detection of early pathogen colonization within the gut environment prior to fecal shedding, providing a robust approach for pathogen surveillance and microbiome studies.
Akshay Krishnakumar +6 more
wiley +1 more source
On the polynomial degeneracy of Ricci invariants and spacetime singularity
Physics Letters BWe explore the connection of a general relativistic matter-energy momentum tensor with the polynomial degeneracies of curvature invariants defined in Riemannian geometry.
Soumya Chakrabarti
doaj +1 more source
Advanced Materials Technologies, EarlyView.The impossibility of defining universal printability criteria for Direct Ink Writing (DIW) requires “unpacking” the process into printing subfunctions. Each of these is rationalized by identifying dimensionless groups, allowing effective comparison between the various material‐ and process‐related parameters for printability purposes.
Enrica Luzzi +4 more
wiley +1 more source
European Physical Journal C: Particles and Fields, 2017 The integrability of the $$\Lambda $$ Λ -Einstein-nonlinear $$SU(2)\,\sigma $$ S U ( 2 ) σ -model with nonvanishing cosmological charge is studied. We apply the method of singularity analysis of differential equations and we show that the equations for ...
Andronikos Paliathanasis +2 more
doaj +1 more source
Cloaking and Antennas: From Theoretical Paradigms to Next‐Generation Intelligent Systems
Advanced Optical Materials, EarlyView.The inception of electromagnetic cloaking sparked an immediate question: Can antennas be made invisible? Two decades later, this review charts the intertwined progress of major cloaking strategies (from transformation optics to scattering cancellation), metasurface technology, and their application to antennas, revealing how AI‐enabled devices are ...
Helen Guo, Xun Li
wiley +1 more source
Advanced Photonics Research, EarlyView.Self‐mixing interferometry is a powerful technique that brings together the exceptional sensitivity of phase measurements with the unequalled simplicity of the self‐mix configuration based on modulation of the cavity field induced by the return from the target. According to the selected measurand, displacement or vibration, and to the analog of digital
Silvano Donati
wiley +1 more source
On the Removal of Initial Singularity in a Big-Bang Universe in Terms of a Renormalized Theory of Gravitation. II [PDF]
, 1971 Hidekazu Nariai, Kenji Tomita
openalex +1 more source
Schrodinger formalism, black hole horizons and singularity behavior
, 2009 The Gauss-Codazzi method is used to discuss the gravitational collapse of a charged Reisner-Nordstr\"om domain wall. We solve the classical equations of motion of a thin charged shell moving under the influence of its own gravitational field and show ...
Greenwood, Eric +2 more
core +1 more source
Recent Advances in Variable‐Stiffness Robotic Systems Enabled by Phase‐Change Materials
Advanced Robotics Research, EarlyView.Phase‐change materials (PCMs), such as shape memory alloys, hydrogels, shape memory polymers, liquid crystal elastomers, and low‐melting‐point alloys, are driving advancements in stiffness‐tunable robotic systems across a wide range of applications. This review highlights recent progress in PCM‐enabled robotics, focusing on their underlying mechanisms,
Sukrit Gaira +5 more
wiley +1 more source
Ontology of Gravitational Singularities
General relativity allows singularities, and we need to understand the ontology of singularities if we want to understand the nature of space and time in the present universe. Although some physicists believe that singularities indicate a failure of general relativity, others believe that singularities open a new horizon in cosmology, with real ...
openaire +2 more sources