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Assessment of The Annual Effective Dose of Bottled Mineral Waters Using Closed Can Technique
Get PDFWater is the most important substance for life. Mineral waters are widely used as drinking water, and so that, it is important to determine the radon levels, and its risk in drinking water for public health and radiation protection. Radon concentration has been measured in the bottled natural mineral water samples commercially available in the Egyptian local market, using closed can technique. Radon concentration in water samples ranged from 0.93 - 6.89 Bql-1 and total annual effective dose ranged from 3.49 - 25.93 µSvy-1. The results indicate that radon concentrations in water samples lower than the recommended limit 11.1BqL-1 by EPA, and the annual effective dose of the samples are lower than the permissible international limit by EPA and WHO. The obtained results indicate that there is no significant public radiological risk related to radon ingested with drinking water in the present study.  
Newton &-vs Lorentz
Get PDFIs there a point of divergence between Classical Mechanics and Electromagnetism? This discrepancy is raised by many authors and arises between Newton's third law and the equation of Lorentz forces. Due to the transcendence of these expressions, their wide application in different situations is not a minor issue and should be given a consistent interpretation with both theories. The discrepancy mentioned is based in that: according to the calculations of classical field theory, a particle with an electric charge moving immersed in a magnetic field suffers an action that diverts its trajectory, making it describe a circular path, which can not be compensated through a contrary force in the body that generated the magnetic field. The force on this second body is predicted, by this theory, at ninety degrees from the first, thus contradicting the principle of action and reaction. This study shows why the Lorentz law does not contradict Newton's third law and gives a consistent explanation of how the equations of classical field theory should be applied so that the result is correct
New Compounds Measured by Fluorescence Spectroscopy. Amino-Fluorene-Thiophene Derivatives to Be Proposed as Polarity Indicators.
Get PDFThe solvatochromic effect is high in conjugate compounds and easy to observe by the colour change emitted when the solutions are exposed to UV light. It was found in a series of aminofluorene thiophene derivatives, previously synthesized, that irradiating at different wavelengths, the same pattern is obtained, i.e. a dual behaviour in the solvatochromism of the studied compounds. For each one, a bathochromic and hypsochromic effect exists, in polar and nonpolar solvents, respectively. Wavelength vs. polarity index plots clearly showed the abovementioned dual behaviour as well as the improved linearity in its plots. Amidst the wavelengths at which each compound is excited in each solvent, 280 nm was selected as the fixed wavelength for the measurements; (E)-9,9-diethyl-N-hexyl-N-phenyl-7-(2-(thiofen-2-yl)vinyl)-9H-fluoren-2-amine (M6-6) exhibits better linearity as compared to the other studied compounds, being the best to be proposed as polarity sensor or indicator
The Spectroscopic and theoretical investigations of complex formation of (3E,3'E)-7,7'-(carbonylbis(azanediyl))bis(3-(2-(2-hydroxyphenyl)hydrazono)-4-oxo-3,4-dihydronaphthalene-2-sulfonic acid) with metal cations
No full textA novel azo-dye was isolated by a diazo-coupling reaction and characterized by the elemental analysis, mass spectra, IR and UV-VIS spectroscopy. The processes of complex formation of H4L with some mono-, bis-, and trivalent metal cations were studied by spectrophotometric titration and theoretical modeling. The NBO effective charge calculations indicate a strong covalent character of the coordination bonds at complexation
Photovoltaic Modules for Indoor Energy Harvesting
Get PDFThis paper presents the performance of indoor energy harvesting systems based on different photovoltaic modules (monocrystalline silicon, polycrystalline silicon, amorphous silicon and polymer) and artificial electric lighting sources (incandescent, fluorescent and cool white flood LED). In this concern, it is clearly proved that, maximum output power densities to be harvested from the photovoltaic module depends mainly on the spectral responses of both the light source and the module material. Herein, and from the study, experimental work, results and analysis, it is clear that monocrystalline silicon is the optimum solution for all light sources, followed by polycrystalline, whenever used with spot-and incandescent - lamps. On the other hand, amorphous samples were proved to be lightly sensitive to fluorescent light and cool white flood LED. Finally, polymer samples were weakly responded whenever exposed to any of the investigated light sources
Kinetic Waves - Dynamics of Light Propagation
Get PDFAn in-depth analysis of the dynamics connected to the Doppler-effect brings clear light to elements of contradiction with the original ground on which the axiom of the constancy of lightspeed was based. Thereby, with regard to electromagnetic phenomenology, the duality waves/particles and the wavy dynamic of light-propagation suggest the existence of a natural kind of waves, which differently from the classic ones, are originating by kinetic thrust and propagating, also though vacuum, by inertial force. The model taken into consideration, to which has been given the name of kinetic waves is, like the classic one, a concretely existing natural phenomenon which can also be visually perceived if produced on molecular scale. Moreover kinetic waves seem to offer many more points of similarity, in dynamic and behavior, with the electromagnetic waves, than the classic model. Applying the obtained results on the astrophysical field, taking as example the quasar 3C-273, the recently found, most far galaxy GN-z11 and the galaxy NGC 224 (better known as Andromeda), can mathematically and concretely be sustained that none of the energy sources we optically perceive, showing a Doppler-shift, nor is approaching nor regressing. In the appendix, a suggested and accurately described experiment on base of Radar Astronomy to possibly confirm the validity of the model presented by this article
Dark Matter and Dark Energy in The Universe
No full textThis paper points out that not only all quantum-ghost puzzles occur in the Time Quantum Worm Hole, but also the dark matter in the universe is hidden in it. Dark energy is the contribution of the Planck black hole left behind by the early universe
The Beginning of The Nuclear Universe and The Theory of Orbital Superconductivity of The Celestial Bodies
Get PDF1. This article is a logical and rational analysis of the original nuclear matter, and of the structure thatgave rise to the space architecture of the universe with galaxies, stars, the system of planets and moons, andarrives to original and inedited conclusions. 2. After the so-called Big Bang of the universe arose the space, a new time count and the nuclearuniverse, governed by the actions of the physical properties of nuclear superconductivity space.3. The actions of the physical properties of superconductivity nuclear matter generate the spatialphenomenon of orbital superconductivity, which creates the orbit and space distance of the orbit between themoons with their planets, between the planets with their star, forming the system of planets, and among thestars creating the architecture of the galaxy.4 The actions of the physical properties of superconductivity nuclear matter also generate the spatialphenomenon of gravity superconductivity, which creates the form and distance from the gravity field in moons,planets, stars and comets, creating the actions of physics of the star and celestial bodies with gravitysuperconductivity.5. The actions of the physical properties of superconductivity nuclear matter also generate the spatialphenomenon of nuclear superconductivity of magnetism, which creates the magnetic pole and the spatialdistance of the magnetic field.6. The nucleus of all stars, planets, moons, are made of matter, called, by mass of energy nuclear ofsuperconductivity.7. All the materials that exist in the nuclear universe are produced, through the atomic decompositionof space nuclear matter.8. The atomic decomposition of superconductivity nuclear matter reduces the nucleus and nuclear energyof spatial superconductivity.9. In the reduction of superconductivity nuclear energy there is a loss of the orbital superconductivityproperty of the moon and the planet.10. In the loss of the orbital superconductivity property of the moon and the planet, the moon is attractedby the superconductivity of the planet and reduces the spatial distance of the orbit until attracted by thesuperconductivity of the planet's gravitational field.11. The fall of the moon will destroy the planet or produce a crater because of the size of the planet.12. The fall of the moon on Jupiter created an immense nuclear crater in which the diameter and depthwas measured the extension of thousands of kilometers.13. The fall of the moon on Mars will create an immense nuclear explosion, and will destroy the planet.14. The majority of the planets of the galaxies and the universe have a time schedule of self-destructionin the fall of the moons.15. The most of the planets in the solar system have a time schedule of self-destruction in the fall of themoons
Contaminations of Radioactive Nuclides of 238U, 232Th, and 40K in Tin Ore
Get PDFTin ore plays a vital role in several industries. Tin ore could contain natural radioactive nuclides of 238U, 232Th, and 40K with various concentrations which might be caused a significant exposure radiation levels to the workers who handle the Tin ore in the factory. Thus, the evaluation of natural radioactive nuclides 238U, 232Th, and 40K in the Tin ore is important from the point of view of radiation protection to save the workers from the radiation hazards
Pointlike Electric Charge in Gravitational Field Theory
Get PDFThe existence of charged elementary ’point particles’ still is a basically unsolved puzzle in theoretical physics.The present work takes a fresh look at the problem by including gravity—without resorting to string theory. Using Einstein’s equations for the gravitational fields in a general static isotropic metric with the full energymomentum tensor (for the charged material mass and the electromagnetic fields) as the source term, a novel exact solution with a well-defined characteristic radius emerges where mass and charge accumulate:—with being the ’classical’ radius associated with the total charge and where is the Schwarzschild radius belonging to the observable mass (for the electron one has m and m). The resulting ’Einstein-Maxwell’ gravitational electron radius can also be written as , where m is the fundamental Planck length and the fine-structure constant, which yields