Results 61 to 70 of about 31,184 (319)

Multifunctional Biomedical Devices with Closed‐Loop Systems for Precision Therapy

Advanced Healthcare Materials, EarlyView.
This review explores two major types of closed‐loop therapeutic systems: self‐sustained and externally triggered. It highlights recent advances in stimuli‐responsive materials, integrated bioelectronics, and data‐driven control strategies, offering insight into emerging strategies for personalized, responsive drug delivery.
Yixuan Leng, Rujie Sun
wiley   +1 more source

Theoretical Physics: A Primer for Philosophers of Science

Principia: An International Journal of Epistemology, 2009
We give a overview of the main areas in theoretical physics, with emphasis on their relation to Lagrangian formalism in classical mechanics. This review covers classical mechanics; the road from classical mechanics to Schrödinger’s quantum mechanics ...
Francisco Antonio Doria
doaj  

Forces between electric charges in motion: Rutherford scattering, circular Keplerian orbits, action-at-a-distance and Newton's third law in relativistic classical electrodynamics

, 2007
Standard formulae of classical electromagnetism for the forces between electric charges in motion derived from retarded potentials are compared with those obtained from a recently developed relativistic classical electrodynamic theory with an ...
Bleaney B. I., Eddington A. S., Eidelman S., Einstein A., Feynman R. P., Feynman R. P., Heaviside O., Heaviside O., Hertz H., Hnizdo V., J. H. FIELD, Jackson J. D., Kittel C., Landau L. D., Liénard A., Panofsky W. H., Whittaker E. T., Wiechert E.   +17 more
core   +1 more source

Classical Quarks in Dual Electromagnetic Fields [PDF]

International Journal of Theoretical Physics, 2010
Electromagnetic properties of quark-like particles are examined in a classical field model involving extended dual electromagnetic fields. These can have fractional charges and a confining potential that derives essentially completely from a short-range weaker potential.
openaire   +4 more sources

Interstitial N‐Strengthened Copper‐Based Bioactive Conductive Dressings Combined with Electromagnetic Fields for Enhanced Wound Healing

Advanced Healthcare Materials, EarlyView.
This study developed a nitrogen‐strengthened copper‐iron‐zinc (N‐CuFeZn) alloy bioactive dressing integrated with electromagnetic stimulation. The coaxial dressing, made from 0.04 mm filaments with 1120 MPa tensile strength, showed that electromagnetic activation enhanced therapeutic outcomes by increasing VEGF expression, promoting angiogenesis (2.1 ...
Xiaohui Qiu, Xianrui Wu, Shaohua Wang, Jie Gu, Senhao Ying, Jiaohao Mo, Chen Jing, Huiliang Cao, Zhongchang Wang, Jianda Zhou   +9 more
wiley   +1 more source

Lagrangian reverse engineering for regular black holes

Physics Letters B
Nonlinear extensions of classical Maxwell's electromagnetism are among the prominent candidates for theories admitting regular black hole solutions. A quest for such examples has been fruitful, but mostly unsystematic and littered by the introduction of ...
Ana Bokulić, Edgardo Franzin, Tajron Jurić, Ivica Smolić   +3 more
doaj   +1 more source

High frequency electrical oscillations in cavities

Mathematical Modelling and Analysis, 2018
If the interior of a conducting cavity (such as a capacitor or a coaxial cable) is supplied with a very high-frequency electric signal, the information between the walls propagates with an appreciable delay, due to the finiteness of the speed of light ...
Daniele Funaro
doaj   +1 more source

Failures of the classical optical theorem under arbitrary-shaped beam incidence in electromagnetism, acoustics, and quantum mechanics: motivation and a review

Frontiers in Physics, 2023
The classical optical theorem states that for a wave propagating in a lossless medium and incident on a finite scatterer, the extinction cross section is proportional to the real part of the scattering amplitude in the forward direction.
Gérard Gouesbet, Philip L. Marston
doaj   +1 more source

Time reversal in classical electromagnetism [PDF]

, 2007
Richard Feynman has claimed that anti-particles are nothing but particles `propagating backwards in time'; that time reversing a particle state always turns it into the corresponding anti-particle state. According to standard quantum eld theory textbooks
Arntzenius, Frank, Greaves, Hilary
core  

Understanding the Planck Blackbody Spectrum and Landau Diamagnetism within Classical Electromagnetism

, 2016
Electromagnetism is a \textit{relativistic} theory and one must exercise care in coupling this theory with \textit{nonrelativistic} classical mechanics and with \textit{nonrelativistic} classical statistical mechanics.
Boyer, Timothy H.
core   +1 more source