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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus…
Murad Shibli
Surprisingly recent astronomical observations have provided strong evidence that our universe is not only expanding, but also is expanding at an accelerating rate. This paper pre- sents a basis of the theory of universe space- time dark energy, a solution of…
Zainelabideen Y. Mijbil, Mudar A. Abdulsattar, Ahmed M. Abdul-Lettif
Lattice constant, total energy, cohesive energy, bulk modulus, speed of sound (υ), plasmon energy (Epl), valence charge distribution and energy bands of cubic boron nitride crystal have been calculated and studied as a function of temperature using self-consi…
Ashraf M. Zenkour, Suzan A. Al-Ahmadi
This paper presents the analytical and numerical solutions for a rotating variable-thickness solid disk. The outer edge of the solid disk is considered to have free boundary conditions. The governing equation is derived from the basic equations of the rotatin…
Mahmoud Hamid Mahmoud Hilo, M. D. Abd Allah, Khalid Mohammed Haroon
This paper presents theoretical investigation on explanation of the mass defect estimating a new value for the proton mass inside the nucleus in the presence of the gravitational potential, the work has been done by using a new theory called the generalized s…
Sami M. Al-Jaber, Abdel-Rahman M. Abu-Labdeh
A calculation of the energy loss due to a transition from non-equilibrium to equilibrium state is given. Three different physical systems are considered in this study: connecting an uncharged capacitor to a charged capacitor, emission of a photon from an exci…
Olfa Fourti, Naceur Jedidi, Abdennaceur Hassen
The step of maturation (around 60 days) appeared less active as compared to the first step of pre-fermentation (around 90 days) since the values of temperature, recorded during the second step of maturation, are found generally less important than those recor…
Yuxue Sun, Yanyu Qin, Qiming Li
Based on the fractal nature of pore size in sandstone and grindingbody within a certain range and the Andreasen equation in theory, using the optimization theory of traditional tem- porary plugging agent for reference, we established a new temporary plugging…
Baurov Yury Alexeevich, Baurov Alexey Yur’evich, Baurov Alexandr Yur’evich (Jr.), Spitalnaya Alexandra Alfredovna, Abramyan Ara Arshavirovich, Solodovnikov Vladimir Alexandrovich
To the foundation of a principally new short-term forecasting method there has been laid down a theory of surrounding us world’s creation and of physical vacuum as a result of interaction of byuons-discrete objects. The definition of the byuon contains the co…
Avat (Arman) Taherpour, Hossein Maroofi, Mahdi Changizi, Reza Vafaei Shoushtari, Kambiz Larijani, Azadeh Kazempour
The volatile constituents of the essential oil of Hymenocrater longiflorus Benth. growing wild in Kurdistan-Iran were investigated using the GC and GC/MS techniques. Fifteen compounds, representing twenty (97.03%) of the total oil were identified. The main co…
Chandra Mani Tiwari, Devendra Sharma, Lalji Tiwari, Ajay Kumar Saxena, Dadan Prasad Tiwari
The annual average values of amplitudes and phases of first two harmonics of cosmic ray anisotropy have been derived by using the harmonic analysis technique for the period 1989 to 2004, which covers mostly the major period of solar cycles 22 and 23. In this…
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Natural Science is an international journal dedicated to the latest advancements in natural sciences. The goal of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of natural sciences. All manus… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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