International Journal of Fundamental Physical Sciences (IJFPS) <div>ISSN:&nbsp;<span style="color: #ff0000; font-size: small;">2231-8186</span>&nbsp;<br>DOI: <span style="color: #ff0000; font-size: small;">10.14331/ijfps</span></div> <div>The abbreviation of the journal title "<strong>International journal of fundamental physical sciences</strong>" is "<strong>Int. J. Fundam. Phys. Sci.</strong>". It is the recommended abbreviation to be used for abstracting, indexing and referencing purposes and meets all criteria of the&nbsp;<a href="" target="_blank" rel="external noopener">ISO 4 standard</a>&nbsp;for abbreviating names of scientific journals.</div> en-US (Ko. Nakajima (中島)‎) Tue, 23 Jun 2020 22:57:26 +0000 OJS 60 Entropy Decrease in Isolated Systems: Theory, Fact and Tests <p>First, we emphasize that preconditions of entropy increase are 1) for isolated systems; 2) various internal interactions in system must be neglected; 3) they must be thermal equilibrium processes. We proposed possible entropy decrease due to fluctuation magnified and internal interactions in isolated systems, and research various possible entropy decreases in physics, which include phase transformation from disorder uniformity to order state. Next, the solidification forms spontaneously an order structure, and it may be process of entropy decrease. Third, we propose that entropy decrease exists necessarily in self-assembly as isolated system. Fourth, we discuss the molecular motor and entropy decreases in biology. Fifth, we research entropy decrease in astronomy and propose quantitatively a total formula of entropy change for universal evolution of any natural and social systems. As long as we break through the bondage of the second law of thermodynamics, the rich and complex world is full of examples of entropy decrease.</p> Yi-Fang Chang ##submission.copyrightStatement## Fri, 26 Jun 2020 21:14:18 +0000 The Wave Nature Phenomena and the Gravitational Field <p style="text-align: justify;">We are familiar with wave – water wave in pond, river, sea, sound wave in the air, the light wave, the infrared wave comes from the sun to the earth.&nbsp; Water waves arise for the disruption in the area of water. In the air, sound waves occur for some disorder. The gravitational field is surrounded everywhere in the universe. Light waves, infrared waves, radio waves are the cause of disruption in the gravitational field. Surges of seawater bear more power than river water because of the density of sea water-heavy than river water. Light waves and others of the sun carries more force than earth because the gravitational field intensity of the sun is higher than the ground. In this paper, we will study the cause of why the nature phenomena of waves such as light disturbs in the gravitational field.</p> Sankar Palchoudhury ##submission.copyrightStatement## Tue, 23 Jun 2020 23:05:36 +0000 Highly Biocompatible Porous NiTi Alloys <p style="text-align: justify;">Nickel Titanium alloys have proved to be a perfect choice for materials used for medical devices like catheters, pacemakers and stone removal mesh. However, there are some challenges related to the shape and size modifications required to suffice the applications. The alloy needs improvements particularly in the areas of porosity for bone replacement, radiopacity, super elasticity and fatigue strength. There is a wide range of applications of biocompatible Porous NiTi alloys in the areas of inter body fusion devices, synthetic bone grafting, etc. Although it cannot be denied of the possibility of high corrosion factor of Porous NiTi alloys as compared to solid NiTinol due to greater surface area in contact with the body fluids. Such cases include definite surface preparation to cater to the need for increased biocompatibility. This paper includes the synthesis of porous NiTi alloys through the sintering process along with a check of the surface treatments and its effects on the properties related to corrosion of Porous NiTinol. The Alloys were subjected to different treatments like dry heating, boiling in water and passivation. The corrosion resistance, after and before the treatments were evaluated.</p> Tejal A Rawal ##submission.copyrightStatement## Wed, 18 Mar 2020 21:15:29 +0000 Gravitational force and fallacy of space deformation <p style="text-align: justify;">In the present paper, we attempt to explain what we really do not know or understand. For this, we assume to accept approaches that go against reason and common sense. We will try to give a view, about inaccuracy arguments state that the gravity force associated with mass, is caused by the deformation of the space adjacent to it. To move from the real world to the world of fantasy, we only needed to support the misconception of the time dilation in the fallacy of the space deformation. We will use this paper to expose some writings that contribute to masking logical reasoning.</p> Enrique Martinez Viladesau ##submission.copyrightStatement## Wed, 18 Mar 2020 20:55:17 +0000 Absolute zero in Casimir vacuum <p style="text-align: justify;">Casimir vacuum has many peculiar properties, e.g. the speed of light can exceed c. This paper investigated the behavior of gas molecules in Casimir vacuum. Analysis and calculation indicate that we can get a new absolute zero in Casimir vacuum. This is due to the Hamiltonian, which equals the kinetic energy of the ensemble of gas molecules that is reduced in Casimir vacuum; therefore, the gas constant R is changed. This conclusion has great significance for the research of the vacuum properties.</p> Xingwu Xu ##submission.copyrightStatement## Wed, 18 Mar 2020 20:23:17 +0000 Von Neumann Entropy by Logarithmic Method <p>The Von Neumann entropy plays a central role in the quantum information theory and is a concave function and following the property &nbsp;. In this paper, we introduce a new proof for the linearity of Von Neumann entropy in the rate without using the above inequality. Here the Von Neumann entropy is concave; that is, given weights&nbsp; &nbsp;and density matrices . Roughly speaking, we will show that in the rate case, the Von Neumann entropy is linear without using Fannes inequality.</p> Bijan Nikouravan ##submission.copyrightStatement## Mon, 30 Dec 2019 00:00:00 +0000