International Journal of Physics»Articles

Article

Dispersion of SH and Love Waves

1Institute for Problems in Mechanics, Prosp. Vernadskogo, Moscow, Russia


International Journal of Physics. 2014, 2(5), 170-180
DOI: 10.12691/ijp-2-5-7
Copyright © 2014 Science and Education Publishing

Cite this paper:
Sergey V. Kuznetsov. Dispersion of SH and Love Waves. International Journal of Physics. 2014; 2(5):170-180. doi: 10.12691/ijp-2-5-7.

Correspondence to: Sergey  V. Kuznetsov, Institute for Problems in Mechanics, Prosp. Vernadskogo, Moscow, Russia. Email: kuzn-sergey@yandex.ru

Abstract

A mathematical model for analyzing both Love waves and horizontally polarized shear surface waves (SH-waves) propagating in stratified media with monoclinic symmetry is worked out. Analytic and numerical solutions for SH and Love waves obtained by applying the Modified Transfer Matrix (MTM) method and a special complex formalism, are presented. Displacement fields, specific energy, phase, ray, and group velocities, and dispersion curves for SH and Love waves are compared and analyzed. Plates with different types of boundary conditions imposed on the outer surfaces are considered. Behavior of the leakage Love waves and anomalous SH-waves is discussed.

Keywords

References

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Article

Analytical Solution of Homogeneous Damped Mathieu Equation

1Heat-Mass Transfer Institute of National Academy of Sciences of RB, Brovka Str., 15, Minsk, RB

2M.V.Lomonosov Moscow State University, Moscow

3Belarusian State University, Nezavisimosti Avenue 4, Minsk, RB


International Journal of Physics. 2014, 2(5), 165-169
DOI: 10.12691/ijp-2-5-6
Copyright © 2014 Science and Education Publishing

Cite this paper:
Dmitri Yerchuck, Alla Dovlatova, Yauhen Yerchak, Felix Borovik. Analytical Solution of Homogeneous Damped Mathieu Equation. International Journal of Physics. 2014; 2(5):165-169. doi: 10.12691/ijp-2-5-6.

Correspondence to: Dmitri  Yerchuck, Heat-Mass Transfer Institute of National Academy of Sciences of RB, Brovka Str., 15, Minsk, RB. Email: dpy@tut.by

Abstract

The general solution of the homogeneous damped Mathieu equation in the analytical form, allowing its practical using in many applications, including superconductivity studies, without numerical calculations has been found.

Keywords

References

[
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Article

Unified Field Theory and Foundation of Physics

1Wayne State University, 42 W Warren Ave, Detroit

2Shanghai Jiaotong University, Shanghai, China

3Northwestern University, Evanston, IL 60208, USA


International Journal of Physics. 2014, 2(5), 158-164
DOI: 10.12691/ijp-2-5-5
Copyright © 2014 Science and Education Publishing

Cite this paper:
Zhiliang Cao, Henry Gu Cao. Unified Field Theory and Foundation of Physics. International Journal of Physics. 2014; 2(5):158-164. doi: 10.12691/ijp-2-5-5.

Correspondence to: Zhiliang  Cao, Wayne State University, 42 W Warren Ave, Detroit. Email: williamcao12252000@yahoo.com

Abstract

The paper "Unified field theory" (UFT) [1] opened a new chapter of physics. The main model of UFT is Torque Grids that unify Space, Time, Energy and Force. The configuration of invisible particles [2] and structure of the grand universe [3] can be logically induced. Visually, the universe can be modeled as single Torque Grids’ hierarchy. A simple UDP Java program can be used to prove the space-time-energy-force relationship predicted by the unified field theory and explain why the continents are drifting [4]. One of the applications of UFT is to predict the nuclei topologies [5] of each element. Physics, "knowledge of nature", is defined as a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. UFT gives a better definition of Physics: “A natural science that involves the study of motion of space-time-energy-force to explain/predict the motion, interaction and configuration of matter.”

Keywords

References

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Article

Chemical Composition Effects on Enthalpy Uncertainty in Natural Gas Energy Measurement System Using Orifice Meter in a Non-adiabatic Condition

1Research Group of Engineering Physic Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132, Indonesia

2Research Centre for Calibration, Instumentation dan Metrology (Pusli KIM-LIPI), Indonesia


International Journal of Physics. 2014, 2(5), 151-157
DOI: 10.12691/ijp-2-5-4
Copyright © 2014 Science and Education Publishing

Cite this paper:
Gunawan Marto, Harijono. A. Tjokronegoro, Edi Leksono, Nugraha, Ghufron Zaid. Chemical Composition Effects on Enthalpy Uncertainty in Natural Gas Energy Measurement System Using Orifice Meter in a Non-adiabatic Condition. International Journal of Physics. 2014; 2(5):151-157. doi: 10.12691/ijp-2-5-4.

Correspondence to: Gunawan  Marto, Research Group of Engineering Physic Institut Teknologi Bandung, Jalan Ganesha 10 Bandung 40132, Indonesia. Email: msc.gunawan96@gmail.com

Abstract

This paper explainsan enthalpy uncertainty ofnatural gas energy measurement (custody transfer) using orifice meter in non adiabatic condition. The method of uncertainty analysis used in this paper was developed based on theuncertainty analysis of natural gas flow measurement using orifice meter at adiabatic condition based on AGA 3, 1992 (which reference by No 10.). In addition of non adiabatic condition includes: critical pressure, critical temperature, realtime pressure, realtime temperature and generalized correlation constanta. The measurement of enthalpy uncertaintyis referring to the Guide to the Eexpression of Uncertainty Measurementof the Guide in MetrologyWorking Group 1 of Joint Committee for Guide In Metrology, 2011. Based on the energy flow in orifice meter is 1000 Mmbtud, The combined uncertainty of f enthalpy is 3.86 x 10-7 Mmbtud (3.86 x 10-8 %) while the expandeduncertainty analysis results 7.73 x 10-7 Mmbtud (7.73 x 10-8 %)with confidence level 95%. This number of uncertaintyis smaller than the Measurement Permissive Error specified by legal metrology organization 0.1667%.

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References

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