Results 11 to 20 of about 743,578 (322)
Real Hamiltonian forms of Hamiltonian systems [PDF]
The European Physical Journal B, 2004 We introduce the notion of a real form of a Hamiltonian dynamical system in analogy with the notion of real forms for simple Lie algebras. This is done by restricting the complexified initial dynamical system to the fixed point set of a given involution. The resulting subspace is isomorphic (but not symplectomorphic) to the initial phase space. Thus to
G. MARMO +3 more
openaire +9 more sources
A Theoretical Mechanism for the Action of SONG-Modulated Laser Light on Human Very Small Embryonic-Like (hVSEL) Stem Cells in Platelet Rich Plasma (PRP) [PDF]
CellR4, 2021 It has previously been shown that human very small embryonic-like (hVSEL) stem cell proliferation occurs rapidly when hVSEL stem cells in platelet rich plasma (PRP) are exposed to Strachan Ovokaitys Node Generator (SONG)-modulated laser light.
J. Brindley, P. Hollands, T. Ovokaitys
doaj +1 more source
Analytical results for phase bunching in the pendulum model of wave-particle interactions
Frontiers in Astronomy and Space Sciences, 2022 Radiation belt electrons are strongly affected by resonant interactions with cyclotron-resonant waves. In the case of a particle passing through resonance with a single, coherent wave, a Hamiltonian formulation is advantageous.
Jay M. Albert +5 more
doaj +1 more source
Dynamic properties of the attachment oscillator arising in the nanophysics
Open Physics, 2023 The attachment oscillator, which plays an important role in the nanophysics such as nano/microelectromechanical systems, molecular devices, and nanofibers, is studied in this work.
Wang Kang-Jia, Si Jing
doaj +1 more source
Heliyon, 2023 Under the influence of axial forces and uniform temperature variations, the thermal buckling and postbuckling of composite beams reinforced of functionally graded multilayer graphene platelets (GPLs) resting on nonlinear elastic foundations are examined.
Ying Lv, Jing Zhang, Lianhe Li
doaj +1 more source
Delay Differential Model for Tumour-Immune System With Chemo-therapy and Optimal Control [PDF]
ITM Web of Conferences, 2020 In this paper, we present a mathematical model of tumour-immune interactions in presence of chemotherapy treatment. The model is governed by a system of delay differential equations with optimal control variables.
Rihan Fathalla A., Rihan Bassel F.
doaj +1 more source
Distribution of energy in propagation for ocean extreme wave generation in hydrodynamics laboratory [PDF]
Global Journal of Environmental Science and Management, 2021 BACKGROUND AND OBJECTIVES: The hydrodynamic uncertainty of the ocean is the reason for testing marine structures as an initial consideration. This uncertainty has an impact on the natural structure of the topography as well as marine habitats.
D. Fadhiliani +4 more
doaj +1 more source
Hamiltonian Thermodynamics [PDF]
Nelineinaya Dinamika, 2020 It is believed that thermodynamic laws are associated with random processes occurring in the system and, therefore, deterministic mechanical systems cannot be described within the framework of the thermodynamic approach. In this paper, we show that thermodynamics (or, more precisely, a thermodynamically-like description) can be constructed even for ...
openaire +3 more sources
Forbidden Subgraphs for Existences of (Connected) 2-Factors of a Graph
Discussiones Mathematicae Graph Theory, 2023 Clearly, having a 2-factor in a graph is a necessary condition for a graph to be hamiltonian, while having an even factor in graph is a necessary condition for a graph to have a 2-factor.
Yang Xiaojing, Xiong Liming
doaj +1 more source