期刊文献+
共找到7篇文章
< 1 >
每页显示 20 50 100
Quantization of the Kinetic Energy of Deterministic Chaos
1
作者 Victor A. Miroshnikov 《American Journal of Computational Mathematics》 2023年第1期1-81,共81页
In previous works, the theoretical and experimental deterministic scalar kinematic structures, the theoretical and experimental deterministic vector kinematic structures, the theoretical and experimental deterministic... In previous works, the theoretical and experimental deterministic scalar kinematic structures, the theoretical and experimental deterministic vector kinematic structures, the theoretical and experimental deterministic scalar dynamic structures, and the theoretical and experimental deterministic vector dynamic structures have been developed to compute the exact solution for deterministic chaos of the exponential pulsons and oscillons that is governed by the nonstationary three-dimensional Navier-Stokes equations. To explore properties of the kinetic energy, rectangular, diagonal, and triangular summations of a matrix of the kinetic energy and general terms of various sums have been used in the current paper to develop quantization of the kinetic energy of deterministic chaos. Nested structures of a cumulative energy pulson, an energy pulson of propagation, an internal energy oscillon, a diagonal energy oscillon, and an external energy oscillon have been established. In turn, the energy pulsons and oscillons include group pulsons of propagation, internal group oscillons, diagonal group oscillons, and external group oscillons. Sequentially, the group pulsons and oscillons contain wave pulsons of propagation, internal wave oscillons, diagonal wave oscillons, and external wave oscillons. Consecutively, the wave pulsons and oscillons are composed of elementary pulsons of propagation, internal elementary oscillons, diagonal elementary oscillons, and external elementary oscillons. Topology, periodicity, and integral properties of the exponential pulsons and oscillons have been studied using the novel method of the inhomogeneous Fourier expansions via eigenfunctions in coordinates and time. Symbolic computations of the exact expansions have been performed using the experimental and theoretical programming in Maple. Results of the symbolic computations have been justified by probe visualizations. 展开更多
关键词 The Navier-Stokes Equations Quantization of Kinetic energy Deterministic Chaos Elementary Pulson of Propagation Internal Elementary Oscillon Diagonal Elementary Oscillon external Elementary Oscillon Wave Pulson of Propagation Internal Wave Oscillon Diagonal Wave Oscillon external Wave Oscillon Group Pulson of Propagation Internal Group Oscillon Diagonal Group Oscillon external Group Oscillon energy Pulson of Propagation Internal energy Oscillon Diagonal energy Oscillon external energy Oscillon Cumulative energy Pulson
下载PDF
The Analytical Potential Energy Function of NH Radical Molecule in External Electric Field 被引量:5
2
作者 伍冬兰 谭彬 +2 位作者 万慧军 谢安东 丁大军 《Chinese Physics Letters》 SCIE CAS CSCD 2015年第7期34-37,共4页
The geometric structures of an Nit radical in different external electric fields are optimized by using the density functional B3P86/cc-PVSZ method, and the bond lengths, dipole moments, vibration frequencies and IR s... The geometric structures of an Nit radical in different external electric fields are optimized by using the density functional B3P86/cc-PVSZ method, and the bond lengths, dipole moments, vibration frequencies and IR spectrum are obtained. The potential energy curves are gained by the CCSD (T) method with the same basis set. These results indicate that the physical property parameters and potential energy curves may change with the external electric field, especially in the reverse direction electric field. The potential energy function of zero field is fitted by the Morse potential, and the fitting parameters are in good accordance with the experimental data. The potential energy functions of different external electric fields are fitted adopting the constructed potential model. The fitted critical dissociation electric parameters are shown to be consistent with the numerical calculation, and the relative errors are only 0.27% and 6.61%, hence the constructed model is reliable and accurate. The present results provide an important reference for further study of the molecular spectrum, dynamics and molecular cooling with Stark effect. 展开更多
关键词 The Analytical Potential energy Function of NH Radical Molecule in external Electric Field NH
下载PDF
Theoretical Quantization of Exact Wave Turbulence in Exponential Oscillons and Pulsons
3
作者 Victor A. Miroshnikov 《American Journal of Computational Mathematics》 2024年第2期203-239,共37页
In a preceding paper, the theoretical and experimental, deterministic and random, scalar and vector, kinematic structures, the theoretical and experimental, deterministic-deterministic, deterministic-random, random-de... In a preceding paper, the theoretical and experimental, deterministic and random, scalar and vector, kinematic structures, the theoretical and experimental, deterministic-deterministic, deterministic-random, random-deterministic, random-random, scalar and vector, dynamic structures have been developed to compute the exact solution for wave turbulence of exponential pulsons and oscillons that is governed by the nonstationary three-dimensional Navier-Stokes equations. The rectangular, diagonal, and triangular summations of matrices of the turbulent kinetic energy and general terms of numerous sums have been used in the current paper to develop theoretical quantization of the kinetic energy of exact wave turbulence. Nested structures of a cumulative energy pulson, a deterministic energy pulson, a deterministic internal energy oscillon, a deterministic-random internal energy oscillon, a random internal energy oscillon, a random energy pulson, a deterministic diagonal energy oscillon, a deterministic external energy oscillon, a deterministic-random external energy oscillon, a random external energy oscillon, and a random diagonal energy oscillon have been established. In turn, the energy pulsons and oscillons include deterministic group pulsons, deterministic internal group oscillons, deterministic-random internal group oscillons, random internal group oscillons, random group pulsons, deterministic diagonal group oscillons, deterministic external group oscillons, deterministic-random external group oscillons, random external group oscillons, and random diagonal group oscillons. Sequentially, the group pulsons and oscillons contain deterministic wave pulsons, deterministic internal wave oscillons, deterministic-random internal wave oscillons, random internal wave oscillons, random wave pulsons, deterministic diagonal wave oscillons, deterministic external wave oscillons, deterministic-random external wave oscillons, random external wave oscillons, random diagonal wave oscillons. Consecutively, the wave pulsons and oscillons are composed of deterministic elementary pulsons, deterministic internal elementary oscillons, deterministic-random internal elementary oscillons, random internal elementary oscillons, random elementary pulsons, deterministic diagonal elementary oscillons, deterministic external elementary oscillons, deterministic-random external elementary oscillons, random-deterministic external elementary oscillons, random external elementary oscillons, and random diagonal elementary oscillons. Symbolic computations of exact expansions have been performed using experimental and theoretical programming in Maple. 展开更多
关键词 The Navier-Stokes Equations Deterministic-Random Internal energy Oscillon Deterministic-Random external energy Oscillon Deterministic-Random Internal Group Oscillons Deterministic-Random external Group Oscillons Deterministic-Random Internal Wave Oscillons Deterministic-Random external Wave Oscillons Deterministic-Random Internal Elementary Oscillons Deterministic-Random external Elementary Oscillons Random-Deterministic external Elementary Oscillons
下载PDF
Stochastic Chaos of Exponential Oscillons and Pulsons
4
作者 Victor A. Miroshnikov 《American Journal of Computational Mathematics》 2023年第4期533-577,共45页
An exact three-dimensional solution for stochastic chaos of I wave groups of M random internal waves governed by the Navier-Stokes equations is developed. The Helmholtz decomposition is used to expand the Dirichlet pr... An exact three-dimensional solution for stochastic chaos of I wave groups of M random internal waves governed by the Navier-Stokes equations is developed. The Helmholtz decomposition is used to expand the Dirichlet problem for the Navier-Stokes equations into the Archimedean, Stokes, and Navier problems. The exact solution is obtained with the help of the method of decomposition in invariant structures. Differential algebra is constructed for six families of random invariant structures: random scalar kinematic structures, time-complementary random scalar kinematic structures, random vector kinematic structures, time-complementary random vector kinematic structures, random scalar dynamic structures, and random vector dynamic structures. Tedious computations are performed using the experimental and theoretical programming in Maple. The random scalar and vector kinematic structures and the time-complementary random scalar and vector kinematic structures are applied to solve the Stokes problem. The random scalar and vector dynamic structures are employed to expand scalar and vector variables of the Navier problem. Potentialization of the Navier field becomes available since vortex forces, which are expressed via the vector potentials of the Helmholtz decomposition, counterbalance each other. On the contrary, potential forces, which are described by the scalar potentials of the Helmholtz decomposition, superimpose to generate the gradient of a dynamic random pressure. Various constituents of the kinetic energy are ascribed to diverse interactions of random, three-dimensional, nonlinear, internal waves with a two-fold topology, which are termed random exponential oscillons and pulsons. Quantization of the kinetic energy of stochastic chaos is developed in terms of wave structures of random elementary oscillons, random elementary pulsons, random internal, diagonal, and external elementary oscillons, random wave pulsons, random internal, diagonal, and external wave oscillons, random group pulsons, random internal, diagonal, and external group oscillons, a random energy pulson, random internal, diagonal, and external energy oscillons, and a random cumulative energy pulson. 展开更多
关键词 The Navier-Stokes Equations Stochastic Chaos Helmholtz Decomposition Exact Solution Decomposition into Invariant Structures Experimental and Theoretical Programming Quantization of Kinetic energy Random Elementary Oscillon Random Elementary Pulson Random Internal Elementary Oscillon Random Diagonal Elementary Oscillon Random external Elementary Oscillon Random Wave Pulson Random Internal Wave Oscillon Random Diagonal Wave Oscillon Random external Wave Oscillon Random Group Pulson Random Internal Group Oscillon Random Diagonal Group Oscillon Random external Group Oscillon Random energy Pulson Random Internal energy Oscillon Random Diagonal energy Oscillon Random external energy Oscillon Random Cumulative energy Pulson
下载PDF
Virtual Principle for Determination Initial Displacements of Reinforced Concrete and Prestressed Concrete (Overtop) Members
5
作者 Mirko Balabušić 《Open Journal of Civil Engineering》 2021年第2期235-253,共19页
Theoretical approach with analytical and numerical procedure for determination initial displacement of a reinforced and prestressed concrete members, simple and cantilever beams, loaded by axial forces and bending mom... Theoretical approach with analytical and numerical procedure for determination initial displacement of a reinforced and prestressed concrete members, simple and cantilever beams, loaded by axial forces and bending moments is <span style="font-family:Verdana;">proposed. It is based on the principle of minimum potential energy with</span><span style="font-family:Verdana;"> equality of internal and external forces. The equations for strain internal energy have been derived, including compressed and tensile concrete and reinforce</span><span style="font-family:Verdana;">ment. The energy equations of the external forces with axial flexural dis</span><span style="font-family:Verdana;">placement effects have been derived from the assumed sinusoidal curve. The trapezoid rule is applied to integrate the segment strain energy. The proposed method uses a non</span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">-</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">linear stress-strain curve for the concrete and bilinear elastic-plastic relationship for reinforcement;equilibrium conditions at a sectional level to generate the strain energies along the beam. At the end of this article are shown three specific numerical examples with comparative, experimental (two tests)</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">results with the excellent agreement and one calculation result with a great disagreement, by obtaining results of virtual principle method.</span></span></span><span><span><span style="font-family:;" "=""> </span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">With this method is avoiding the adoption of an unsure (EJ), as in the case of underestimating or overestimate initial flexural rigidity.</span></span></span> 展开更多
关键词 Virtual Principle Strain and external energy Reinforced and Prestresed Beam
下载PDF
Forced vibration control of an axially moving beam with an attached nonlinear energy sink 被引量:11
6
作者 Ye-Wei Zhang Shuai Hou +2 位作者 Ke-Fan Xu Tian-Zhi Yang Li-Qun Chen 《Acta Mechanica Solida Sinica》 SCIE EI CSCD 2017年第6期674-682,共9页
This paper investigates a highly efficient and promising control method for forced vibration control of an axially moving beam with an attached nonlinear energy sink(NES).Because of the axial velocity,external force... This paper investigates a highly efficient and promising control method for forced vibration control of an axially moving beam with an attached nonlinear energy sink(NES).Because of the axial velocity,external force and external excitation frequency,the beam undergoes a high-amplitude vibration.The Galerkin method is applied to discretize the dynamic equations of the beam–NES system.The steady-state responses of the beams with an attached NES and with nothing attached are acquired by numerical simulation.Furthermore,the fast Fourier transform(FFT)is applied to get the amplitude–frequency responses.From the perspective of frequency domain analysis,it is explained that the NES has little effect on the natural frequency of the beam.Results confirm that NES has a great potential to control the excessive vibration. 展开更多
关键词 Forced vibration Axially moving beam FFT Nonlinear energy sink(NES) external excitation frequency
原文传递
Recent advances in enhancing reactive oxygen species based chemodynamic therapy 被引量:2
7
作者 Xinchao Li Rui Luo +2 位作者 Xiuqi Liang Qinjie Wu Changyang Gong 《Chinese Chemical Letters》 SCIE CAS CSCD 2022年第5期2213-2230,共18页
Chemodynamic therapy(CDT),defined as an in situ oxidative stress response catalyzed by the Fenton or Fenton-like reactions to generate cytotoxic hydroxyl radicals(•OH)at tumor sites,exhibits conspicuous inhibition of ... Chemodynamic therapy(CDT),defined as an in situ oxidative stress response catalyzed by the Fenton or Fenton-like reactions to generate cytotoxic hydroxyl radicals(•OH)at tumor sites,exhibits conspicuous inhibition of tumor growth.It has attracted extensive attention for its outstanding edge in effectiveness,lower systemic toxicity and side effects,sustainability,low cost and convenience.However,the inconfor-mity of harsh Fenton reaction conditions and tumor microenvironment hamper its further development,based on which,numerous researchers have made efforts in further improving the efficiency of CDT.In this review,we expounded antitumor capacity of CDT in mechanism,together with its limitation,and then summarized and came up with several strategies to enhance CDT involved tumor therapy strategies by 1)improving catalytic efficiency;2)increasing hydrogen peroxide levels at tumor sites;3)reducing glutathione levels at tumor sites;4)applying external energy intervention;5)amplifying the distribu-tion of hydroxyl radicals at tumor sites;and 6)combination therapy.Eventually,the perspectives and challenges of CDT are further discussed to encourage more in-depth studies and rational reflections. 展开更多
关键词 Chemdynamic therapy Fenton or fenton-like reactions Reactive oxygen species Increasing hydrogen peroxide levels Reducing glutathione levels external energy intervention Combination therapy
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部