Results 21 to 30 of about 45,644 (230)

SYMMETRY AND CONSERVATION LAWS [PDF]

open access: yesProceedings of the National Academy of Sciences, 1964
Symmetry and invariance considerations, and even conservation laws, played undoubtedly an important role in the thinking of the early physicists, such as Galileo and Newton, and probably even before then. However, these considerations were not thought to be particularly important and were articulated only rarely.
openaire   +2 more sources

A Time Two-Mesh Finite Difference Numerical Scheme for the Symmetric Regularized Long Wave Equation

open access: yesFractal and Fractional, 2023
The symmetric regularized long wave (SRLW) equation is a mathematical model used in many areas of physics; the solution of the SRLW equation can accurately describe the behavior of long waves in shallow water. To approximate the solutions of the equation,
Jingying Gao   +3 more
doaj   +1 more source

Scaling Symmetry and a New Conservation Law of the Harry Dym Equation [PDF]

open access: yesMathematics Interdisciplinary Research, 2021
In this paper, we obtain a new conservation law for the Harry Dym equation by using the scaling method. This method is algorithmic and based on variational calculus and linear algebra. In this method, the density of the conservation law is constructed by
Mehdi Jafari   +2 more
doaj   +1 more source

Getting deeper insight into stopping power problems in radiation physics using the Noether's theorem corollary [PDF]

open access: yesNuclear Technology and Radiation Protection, 2014
The theories that combine two different approaches in dealing with interacting objects, for instance, treating electromagnetic laser field classically, and the interacting atom as a quantum object, have some ambiguities and, as such, they should
Ristić Vladimir M.   +3 more
doaj   +1 more source

Group classification, invariant solutions and conservation laws of nonlinear orthotropic two-dimensional filtration equation with the Riemann–Liouville time-fractional derivative

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2020
A nonlinear two-dimensional orthotropic filtration equation with the Riemann–Liouville time-fractional derivative is considered. It is proved that this equation can admits only linear autonomous groups of point transformations.
Veronika Olegovna Lukashchuk   +1 more
doaj   +1 more source

Hamiltonians of the Generalized Nonlinear Schrödinger Equations

open access: yesMathematics, 2023
Some types of the generalized nonlinear Schrödinger equation of the second, fourth and sixth order are considered. The Cauchy problem for equations in the general case cannot be solved by the inverse scattering transform. The main objective of this paper
Nikolay A. Kudryashov
doaj   +1 more source

Extensive Review of Materials for Next‐Generation Transparent Batteries and Their Design Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Review explores emerging materials and design strategies for transparent batteries, examining electrodes, electrolytes, separators, and device architectures optimized for high electrochemical performance, mechanical flexibility, and optical transparency.
Atul Kumar Mishra   +5 more
wiley   +1 more source

MIGRATION OF SEISMIC AND VOLCANIC ACTIVITY AS DISPLAY OF WAVE GEODYNAMIC PROCESS

open access: yesГеодинамика и тектонофизика, 2015
Publications about the earthquake foci migration have been reviewed. An important result of such studies is establishment of wave nature of seismic activity migration that is manifested by two types of rotational waves; such waves are responsible for ...
Alexander V. Vikulin   +3 more
doaj   +1 more source

Infrared Nanocrystals for Space Application: Hardness to Irradiations

open access: yesAdvanced Functional Materials, EarlyView.
This article investigates infrared HgTe nanocrystals under X‐ray and ion irradiation, revealing remarkable radiation hardness. It uncovers distinct degradation mechanisms and shows that the nanomaterial outperforms integrated electronics. The results position colloidal nanocrystals as promising candidates for resilient space and harsh‐environment ...
Alexandre Neyret   +22 more
wiley   +1 more source

Rethinking legal objectives for climate-adaptive conservation

open access: yesEcology and Society, 2016
This paper examines conservation objectives in Australian law in the context of climate change. The rate of climate change and the scale and extent of its impacts on natural systems drive the need to re-evaluate current conservation objectives, from ...
Jan McDonald   +4 more
doaj   +1 more source

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