bluuebunny/crossref_metadata_2025 huggingface dataset:
Rosen-Chambers Variation Theory of Linearly-Damped Classic and Quantum Oscillator
Authors: Szasz A. Vincze Gy.
Published: November 2018

Phenomena of damped harmonic oscillator is important in the description of the elementary dissipative processes of linear responses in our physical world. Its classical description is clear and understood, however it is not so in the quantum physics, where it also has a basic role. Starting from the Rosen-Chambers restricted variation principle a Hamilton like variation approach to the damped harmonic oscillator will be given. The usual formalisms of classical mechanics, as Lagrangian, Hamiltonian, Poisson brackets, will be covered too. We shall introduce two Poisson brackets. The first one has only mathematical meaning and for the second, the so-called constitutive Poisson brackets, a physical interpretation will be presented. We shall show that only the fundamental constitutive Poisson brackets are not invariant throughout the motion of the damped oscillator, but these show a kind of universal time dependence in the universal time scale of the damped oscillator. The quantum mechanical Poisson brackets and commutation relations belonging to these fundamental time dependent classical brackets will be described. Our objective in this work is giving clearer view to the challenge of the dissipative quantum oscillator.
Critical failure of the principle equivalence between acceleration and gravity
Authors: Guillen Alfonso L
Published: November 2018

The principle of equivalence between acceleration and gravity of general relativity is reviewed in a thought experiment of two bodies, aligned according to the perpendicular, under the reciprocal action of their gravity, in free fall, inside of an uniformly accelerated reference system, in the vacuum. The result is that the two bodies fall with a different acceleration. This result invalidates such principle.
Performance Study of Some Reverse Osmosis Systems for Removal of Uranium and Total Dissolved Solids in Underground Waters of Punjab State, India
Authors: Sharma Nisha , Singh Jaspal , Kaur Barjinder
Published: November 2018

Radionuclides (uranium, thorium, radium, radon gas etc.) are found naturally in air, water, soil and rock. Everyday, we ingest and inhale these radionuclides through the air we breathe and through food and water we take. Out of the internal exposure via ingestion of radionuclides, water contributes the major portion. The natural radioactivity of water is due to the activity transfer from bed rock and soils. In our surveys carried out in the past few years, we have observed high concentrations of uranium and total dissolved solids (TDS) in drinking waters of some southern parts of Punjab State exceeding the safe limits recommended by national and international agencies. The main drinking water source is the underground water procured from different depths. Due to the highly saline taste, disorders in their digestive systems and other ailments, people are installing reverse osmosis (RO) systems in their houses. Some RO systems have been installed on commercial basis. The state government is also in the process of installing community RO systems at the village level. As high values of uranium are also undesired and may pose health hazards due to radioactivity and toxicity of uranium, we have conducted a survey in the field to study the performance of various RO systems for removal of uranium and TDS. Water samples from about forty RO systems from Faridkot, Mansa, Bathinda and Amritsar districts of Punjab State were collected and analyzed. Our results show that some RO systems are able to remove more than 99% of uranium in the underground waters used for drinking purposes. TDS values are also reduced considerably to the desired levels. So RO systems can be used to avoid the risk of unduly health problems posed by high concentrations of uranium and TDS in drinking water.
Signal-to-Noise Ratio importance in Apparent Diffusion Coefficient measurements using Diffusion-Weighted Echo-Planar-Imaging scans
Authors: Biagini Cristiano , De Michele Martina , Pratesi Andrea , Mungai Francesco , Betti Margherita , Izzo Giana , Biagini Carlo , Natale Luigi
Published: November 2018

Purpose: To define experimental grounds for Apparent Diffusion Coefficient (ADC) measurements using Spin-Echo Diffusion-Weighted Echo-Planar (SE-DW-EPI) sequences, as a function of Signal-to-Noise Ratio (SNR).Methods: multiple multi-b SE-DW-EPI scans with the same parameters but the lipid suppression technique have been compared on water phantom with a 3T MRI equipment. The SNR has been estimated using the method of difference. Images have been analyzed manually, comparing the signal intensities at different b-values.Results: All measurements show a high repeatability and strong self-consistency. A significant dependence of the ADC on SNR has been shown, and its lowest limitto obtain reliable quantitative answers has been stated.Conclusion: ADC measurements in vivo must be carefully designed to avoid systematic errors during acquisition and post-processing due to low SNR.
The Extreme Downflow in the Umbral Light Bridge of the sunspot
Authors: AL-Mashhadani Layali Yahya Salih , Tarish Orooba Jameel
Published: November 2018

Sunspots are the most readily visible manifestations of the interaction of the solar magnetic field with the solar atmosphere and the most prominent tracers of solar magnetic activity.Results of the recent studies based on observation from Hinoddetectedthe presence of extremedownflows in a sunspot light bridgeup to 7.2 kms-1 which is exceed the speed of sound in solar photosphere of about 6 kms-1.The convective downflows and upflows are associated with a strong horizontal outflow directed radially outwards from the sunspot centre. These horizontal flows constitute the famous and mysterious Evershed effect.In the present paperwe studied the asymmetries and wavelength shifts of the FeI lines at 630.25 nm to detect the exiting of the extreme downflows in the sunspot light bridge.Our analysis reveals the presence of extreme downflows in the umbra light bridge of the sunspot of more than 10 km s-1.
INTRODUCTION TO CAMBER CONTROL, PRESTRESSED CONCRETE BRIDGE GIRDERS
Authors: Ratra Akhil , Singh Kuldeep , Dhillon Sandeep
Published: November 2018

When designing a bridge, serviceability usually controls and is a more important factor than the ultimate capacity of the bridge or the allowable stresses. Therefore, the behaviour of the bridge girder deflection and camber must be predicted as accurately as possible. Therefore, excessive camber has become one of the most common problems when constructing concrete bridges. Different methods have been developed to overcome this problem. The most common and widely used is using haunch with adjustable pedestals to overcome the excessive camber. However, this method has limitations that must be considered. Therefore, this study is evaluating the effectiveness of using post tensioning jacking strands at the top flange of simply supported bridge girders to reduce the excessive camber and make it equal to the design camber.
Decay properties of Diquarks and exotics
Authors: Bhattacharya A. , Saha R. , Chandra A.
Published: November 2018

Decay and spectroscopic properties of vector and scalar diquarks have been studied. The decay widths and decay constants of scalar and vector diquarks have been estimated in the frame work of quasi particle model of diquark. The decay widths of exotic baryons like,Î”, N, Î¸+ have been investigated. The investigation is important in the view of LHC era where existence of new particle (new Physics) are expected including the colored objects like diquarks. The results obtained are compared with existing theoretical and experimental works wherever available. Some interesting observations are made.
Interactive Two-Stage Stochastic fuzzy Rough Programming for Water Resources Management
Authors: Khalifa H. A. , Ammar E. E.
Published: November 2018

This paper deals with a fuzzy programming approach for treating an interactive two-stage stochastic rough-interval water resource management. The approach has been developed by incorporating an interactive fuzzy resolution method within a rough two-stage stochastic programming framework. The approach can not only tackle dual rough intervals presented as an inexact boundary intervals that exist in the objective function and the left- and right-hand sides of the constraints that are associated with different levels of economic penalties when the promised policy targets are violated. The results indicate that a set of solutions under different feasibility degrees has been generated for planning the water resources allocation. They can help the decision makers to conduct in depth analysis of tradeoffs between economic efficiency and constraint-violation risk, as well as enable them to identify, in an interactive way, a desired compromise between satisfaction degree of the goal and feasibility of the constraints. A management example in terms of rough-intervals water resources allocation has been treated for the sake of applicability of the proposed approach.
An approximated Snake Function for Road Extraction from digital images
Authors: Mohamadnia Leyla , Amini Jalal
Published: November 2018

This paper proposes an optimized mathematical model (Snake-ant) for linear feature extraction from satellite images. The model first uses the Ant Colony Optimization (ACO) to establish a pheromone matrix that represents the pheromone information at each pixel position of the image, according to the movements of a number of ants which are sent to move on the image. Next pheromone matrix is used in the snake model as external energy to extract the linear features like roads edges in image. Snake is a parametric curve which is allowed to deform from some arbitrary initial location toward the desired final location by minimizing an energy function based on the internal and external energy. Our approach is validated by a series of tests on satellite images.
Spectral relationships of the integral equation with logarithmic kernel in some different domains
Authors: Youssef M. I. , Abdou M. A.
Published: November 2018

In this work, the Fredholm integral equation (FIE) with logarithmic kernel is investigated from the contact problem in the plane theory of elasticity. Then, using potential theory method (PTM), the spectral relationships (SRs) of this integral equation are obtained in some different domains of the contact. Many special cases and new SRs are established and discussed from this work.
Intrinsic Characteristics of Quasars Redshifts
Authors: Elsanhoury Waleed
Published: November 2018

Using Sloan Digital Sky Survey SDSS catalog, some intrinsic characteristics of Quasars (10,000 points) are developed of these are the strong correlations between redshifts and other parameters, e.g. combined magnitude, luminosity, and absolute magnitude .Moreover ,the Karlsson peak of our sample is also computed.
DESIGN, FABRICATION AND CHARACTERIZATION OF AN AUTOMATED INCLINED BOX-TYPE SOLAR COOKER EMPLOYING TRACKING REFLECTORS
Authors: C. Nwosu Vitalis , Anusionwu B.C. , Chineke T.C. , Mejeha I.M. , Okeoma K.B.
Published: November 2018

An inclined box-type solar cooker employing tracking reflectors with dimensions 700mm x 440mm x 280mm, has been successfully designed and fabricated. The detachable reflectors, which were mounted on the box cooker, were suitably positioned in an east-west configuration on an inclined framework. This automatically tracks the apparent motion of the sun within 15 minutes time interval so as to align with the earthâ€™s rotation when displayed under the sun. Thermal performance of the inclined box-type solar cooker has also been compared with that of a conventional box-type solar cooker whose dimensions and make are identical to the inclined box cooker. Testing of the tracking box type solar cooker has been carried out with load and without load conditions at Federal University of Technology Owerri, Imo State, located at Latitude 5oN, Longitude 7oE, Altitude 156m (Altitude 511ft) and 12km south of Owerri capital territory. Experimental results obtained from the field test show that the inclined box-type solar cooker with tracking reflectors attained temperature of 94oC, with efficiency of 93% and boiled water for 1hour 28 minutes. The conventional box-type solar cooker attained a temperature of 91oC, with efficiency of 90.9% and boiled water for 1hour 36 minutes. The tracking box cooker was found to be more efficient and effective than the conventional box cooker. Meteorological variables like Air Temperature, Irradiance, Relative Humidity and Wind speed were also obtained to investigate their effects on the performance of the box cookers.
Complex Impedance Measurements on the Steady State Behaviors of a 10-cell PEFC Stack
Authors: Yoneda Seiji , Ohno Yoshihiro
Published: November 2018

Experimental studies on the behavior of a Polymer Electrolyte Fuel Cell (PEFC) stack were conducted by performing complex impedance measurements. Initially, the steady state characteristics of a 10-cell stack were measured, and the power function of the DC current was obtained to represent these characteristics. The frequency properties of the complex impedance apparatus were investigated in order to clarify the limitations of frequency measurement. The components of complex impedance, the real and imaginary parts, were rearranged into two vectors to analyze their frequency responses to power and output DC current.
A VARIATIONAL THEORY OF QUASI-PARTICLES IN A 3D N x N x N CUBIC LATTICE
Authors: A. Edison Enaibe , Erhieyovwe Akpata , Omosede Osafile
Published: November 2018

The single-band Hubbard Hamiltonian study faces a serious limitation and difficulty as we move away from finite - size lattices to larger N - dimensional lattices. Thus there is the needto develop the means of overcoming the finite - size lattice defects as we pass on to a higher dimension.In this work, a quantitative approximation to the one-band Hubbard model is presented using a variational analytic approach. The goal of this work, therefore, is to explore quantitatively the lowest ground-state energy and the pairing correlations in 3D N x N x N lattices of the Hubbard model. We developed the unit step model as an approximate solution to the single-band Hubbard Hamiltonian to solve variationallythe correlation of two interacting elections on a three-dimensional cubic lattice. We also showed primarily how to derive possible electronic states available for several even and odd3D lattices, although, this work places more emphasis on a 3D 5 x 5 x 5 lattice. The results emerging from our present study compared favourablywith the results of Gutzwillervariational approach (GVA) and correlated variational approach (CVA), at thelarge limit of the Coulomb interaction strength (U/4t). It is revealed in this study, that the repulsive Coulomb interaction which in part leads to the strong electronic correlations, would indicate that the two electron system prefer not to condense into s-wave superconducting singlet state (s = 0), at high positive values of the interaction strength.
Point Spread Function For Elliptical Aperture Inclined at ï°/4 angle with x-axis
Authors: Y. Hasan Sundus , H. Tarkhan Widad
Published: November 2018

Point spread function (PSF) for inclined elliptical aperture with an angle equal to p/4 with x-axis has been studied, by taking new coordinates m and n which are rotated by an angle p/4 to x and y- axes.The properties of the obtained image have been found in different cases, for diffraction limited system and different types of aberrations, like focus error, spherical aberration and coma aberration.
Effects of relief gratings, light characteristics and material properties to the emission resonance region
Authors: Sassi Imed Ahmed
Published: November 2018

We present numerical simulations in order to investigate the coupling of the incident radiation to Surface Plasmon polaritons (SPPs) by metallic relief gratings. When the frequency of the SPPs is coincident with the electromagnetic waves, there is a strong absorption of the electromagnetic waves. This phenomenon is called surface Plasmon resonance (SPR). The effects of surface materials, characteristics of incident light and the geometrical shapes on the SPR are studied by using the rigorous coupled-wave algorithm (RCWA).Â  The results reveal that a peak of high emissivity is obtained for Au compared with W, Cu and Al. This explained that the gold is the best transition metal used for the excitation of SPPs. At the resonance the absorption of light by the (Au) grating is greater for grazing than normal incident light. Every considered transition material has the particular wavelength emission region and the period emission region. The influence of gratings geometric parameters on the SPR is also presented.Â  Â  Â  Â
The Conservation of Energy and Momentum in the Positron-Electron Annihilation According to Complete Relativity
Authors: Bellotti Giuseppe
Published: November 2018

According to Complete Relativity (an improvement of Special Relativity where a new postulate was introduced: an electron cannot move at average speeds less thanÂ  u0 = Î±c / Ï€Â  whereÂ  Î±Â  is the constant of fine structure andÂ  cÂ  is the speed of light), and with the hypothesis that the electron and positron are two three-dimensional electromagnetic spherical standing waves, the electromagnetic standing waves of an electron-positron pair can overlap in the low energy conditions and generate a singleÂ  Î³ rayÂ  ofÂ  E = 1.022Â  MeV.Â  Instead the actual physical theories consider a model of positron-electron pair annihilation, where conservation of momentum requires the creation of two 511 keV photons moving toward opposite directions. But in the paper we do not consider any photons: there is only a progressive electromagnetic wave compound by two electromagnetic standing waves. Only a thorough test will be able to decide the right model.
Action Flow in Obsessive-Compulsive Disorder Rituals: a model based on Extended Synergetics and a Comment on the 4th Law
Authors: Frank Till D
Published: November 2018

The flow of actions in rituals of obsessive individuals is discussed from a nonlinear physics perspective. An amplitude equation model based on extended synergetics is studied. The amplitude dynamics describes both the behavioral actions and the experienced emotions during obsessive-compulsive disorder rituals. The model suggests that in addition to the behavioral and emotional levels that are accessible to external observation and self-reports there are hidden levels captured by parameter dynamics that determine the action flow in obsessive-compulsive disorder rituals. The model can also be used to discuss on the mechanistic and behavioral levels differences between purposeful and purposeless rituals. While purposeful rituals involve a continuous control of the emotional level over the behavioral level, purposeless rituals do not exhibit such a continuous control mechanism. Finally, it is argued that the selection principle determining the action flow in obsessive-compulsive disorder rituals is consistent with the so-called 4th law of non-equilibrium phase transitions in animate and inanimate systems
Mixed convection flow due to a moving vertical plate parallel to free stream under the influence of Newtonian heating and thermal radiation
Authors: Patil Prabhugouda , Roy S.
Published: November 2018

The steady mixed convection flow from a moving vertical plate in a parallel free stream is considered to investigate the combined effects of buoyancy force and thermal diffusion in presence of thermal radiation as well as Newtonian heating effects. The governing boundary layer equations are transformed into a non-dimensional form by a group of non-similar transformations. The resulting system of coupled non-linear partial differential equations is solved by an implicit finite difference scheme in conjunction with the quasi-linearization technique. Computations are performed and representative set is displayed graphically to illustrate the influence of the mixed convection parameter ( ), Prandtl number (Pr), the ratio of free stream velocity to the composite reference velocity ( ) and the radiation parameter (R) on the velocity and temperature profiles. The numerical results for the local skinfriction coefficient ( ) and surface temperature ( ) are also presented. The results show that the streamwise co-ordinate Â significantly influences the flow and thermal fields which indicate the importance of non-similar solutions. Also, it is observed that the increase of mixed convection parameter causes the increase in the magnitude of velocity profile about 65% for lower Prandtl number fluids (Pr=0.7), while it decreases in the temperature profile about 30%. Present results are compared with previously published work and are found to be in excellent agreement.
Conservative solute transport with periodic velocity and sinusoidal source concentration in semi-infinite porous media: An analytical solution
Authors: Yadav R R , Gulrana Gulrana , Jaiswal Dilip Kumar
Published: November 2018

The present paper has been focused mainly towards understanding of the various parameters affecting the transport of conservative solutes in horizontally semi-infinite porous media. A model is presented for simulating one-dimensional transport of solute considering the porous medium to be homogeneous, isotropic and adsorbing nature under the influence of periodic seepage velocity. Initially the porous domain is not solute free. The solute is initially introduced from a sinusoidal point source. The transport equation is solved analytically by using Laplace Transformation Technique. Alternate as an illustration; solutions for the present problem are illustrated by numerical examples and graphs.
The measurement of photoneutron dose around an 18 MV Varian linear accelerator by TLD600 and TLD700 dosimeters inside the polyethylene sphere of neutron probe LB 6411
Authors: F Samiei , A Nedaie H , H Darestani , N Banaee , N Shagholi , K Mohammadi , A Shahvar
Published: November 2018

BremsstrahlungÂ  X-raysÂ  fromÂ  high-energyÂ  linearÂ Â Â  acceleratorsÂ  (Linacs)Â  produceÂ  neutronsÂ  asÂ  aÂ  resultÂ  ofÂ  photonuclearÂ  reactionsÂ  mainlyÂ  withÂ  theÂ  differentÂ  materialsÂ  constitutingÂ  theÂ  acceleratorÂ  head.Â  TheÂ  neutronsÂ  producedÂ  duringÂ  highÂ  energyÂ  radiotherapyÂ  shouldÂ  beÂ  consideredÂ  inÂ  termsÂ  ofÂ  protectionÂ  andÂ  oseÂ  escalation.Â  Due Â toÂ  theÂ  veryÂ  intenseÂ  photonÂ  componentÂ  inÂ  theÂ  LinacÂ  fieldÂ  causingÂ  pulseÂ  pile-upÂ  andÂ  dead-timeÂ  effectsÂ  inÂ  detectors,Â  measurementÂ  ofÂ  theÂ  correspondingÂ  neutronÂ  doseÂ  byÂ  activeÂ  dosimetersÂ  isÂ  extremelyÂ  troublesome.Â  InÂ  thisÂ  study,Â  theÂ  neutronÂ  probeÂ  LBÂ  6411,Â  whichÂ  activeÂ  detectorÂ  ofÂ  3HeÂ  proportionalÂ  counterÂ  tubeÂ  wasÂ  replacedÂ  withÂ  theÂ  passiveÂ  detectorsÂ  ofÂ  TLD600Â  andÂ  TLD700,Â  hasÂ  beenÂ  usedÂ  toÂ  performÂ  neutronÂ  measurementsÂ  atÂ  fourÂ  pointsÂ  aroundÂ  theÂ  18Â  MVÂ  VarianÂ  2100CÂ  LinacÂ  facility.Â  TheÂ  neutronÂ  doseÂ  equivalentÂ  atÂ  theÂ  distanceÂ  ofÂ  1Â  andÂ  2Â  mÂ  fromÂ  theÂ  isocentreÂ  onÂ  theÂ  patientÂ  couchÂ  wasÂ  obtainedÂ  2.2Â  andÂ  0.75Â  mSv.Gy-1Â  respectively.Â  AccordingÂ  toÂ  theÂ  results,Â  theÂ  doseÂ  equivalentÂ  fromÂ  emittedÂ  photoneutronsÂ  isÂ  notÂ  negligibleÂ  andÂ  thereforeÂ  treatmentÂ  conditionsÂ  shouldÂ  beÂ  optimized.Â  TheÂ  resultsÂ  ofÂ  thisÂ  studyÂ  emphasizedÂ  thatÂ  TLD600Â  andÂ  TLD700Â  dosimetersÂ  insideÂ  theÂ  polyethyleneÂ  sphereÂ  ofÂ  neutronÂ  probeÂ  LBÂ  6411Â  isÂ  anÂ  appropriateÂ  choiceÂ  forÂ  studyingÂ  photoneutronÂ  productionÂ  inÂ  theÂ  vicinityÂ  ofÂ  theÂ  accelerator.
Few possible models for 19.9%efficient
Authors: Vanakudare Vijaya N , Deshpande Rajeev L
Published: November 2018

: Device modeling and simulation studies of a CIGS thin film solar cell have been carried out using SCAPS 2902. A variety of graded band gap structures of efficiency around 19.9% are examined. The study shows that material saving models with efficiency Î· around 19.9% is possible
A Relativistic Newtonian Mechanics Predicts with Precision the Results of Recent Neutrino-Velocity Experiments
Authors: Suleiman Ramzi
Published: November 2018

The research on quasi-luminal neutrinos has sparked several experimental studies for testing the "speed of light limit" hypothesis. Until today, the overall evidence favors the "null" hypothesis, stating that there is no significant difference between the observed velocities of light and neutrinos. Despite numerous theoretical models proposed to explain the neutrinos behavior, no attempt has been undertaken to predict the experimentally produced results. This paper presents a simple novel extension of Newton's mechanics to the domain of relativistic velocities. For a typical neutrino-velocity experiment, the proposed model is utilized to derive a general expression for . Comparison of the model's prediction with results of six neutrino-velocity experiments, conducted by five collaborations, reveals that the model predicts all the reported results with striking accuracy. Because in the proposed model, the direction of the neutrino flight matters, the model's impressive success in accounting for all the tested data, indicates a complete collapse of the Lorentz symmetry principle in situation involving quasi-luminal particles, moving in two opposite directions. This conclusion is support by previous findings, showing that an identical Sagnac effect to the one documented for radial motion, occurs also in linear motion.
CHARACTERISTICS OF PARTICLES PRODUCED IN HADRON-NUCLEUS COLLISIONS
Authors: Ahmad Tufail
Published: November 2018

A detailed study on mean multiplicities of secondary charged particles is presented. The average number of grey, black and heavy particles are found to be independent of energy in proton-nucleus interactions whereas for pion-nucleus collisions the data deviates from its independence with energy. The ratio of mean number of charged particles produced in pion-nucleus collisions to its number in proton-nucleus interactions at almost the same energy is found to be similar at different energies.
MECHANICAL PROPERTIES OF BAMBOO POWDER REINFORCED ETHYLENE PROPYLENE DIENE MONOMER (EPDM) COMPOSITES: EFFECT OF FILLER LOADING AND PARTICLE SIZE
Authors: Abd El-Salam Mokhtar Hemdan
Published: November 2018

Due to the light weight, high specific strength and non hazardous nature of bamboo fiber, it is preferred over synthetic fibers in composite materials for a wide range of applications such as automotive industry and including household sectors. As was noticed, little attention has been given to the effect of bamboo powder on the mechanical properties of rubber composites. Hence, an attempt has been made in this paper to the study the effect of loading and particle size of bamboo powder on the mechanical properties of EPDM composites. Thermo-gravimetric analysis (TGA) was carried out to study the thermal stability of composites. Results indicated that the thermal stability of EPDM was further improved with increasing in bamboo loading and decreasing in particle size. The stress- strain curves of the composites were studied and fitted according toOgdenâ€™s model. Mechanical parameters for the studied composites were improved with increasing bamboo loading. Besides, properties such as rupture stress, and internal friction were found to be maximum for composites containing certain content of bamboo powder, depending upon its particle size. Moreover, composites containing the smallest particle size of powder, at all levels of bamboo loading, showed mechanical properties superior to all other composites. From the dynamic mechanical measurements, the dynamic modulus, internal friction, and thermal diffusivity were calculated. The observed variations were explained in view of the role played by both the loading level and the particle size of bamboo powder. These findings were supported by scanning electron microscopy (SEM) micrographs.
TRAPPING CAPABILITY OF MICROLENS 2D ARRAY BY ACOUSTIC MODULATION
Authors: Ho Quang Quy , Nguyen Van Thinh , Chu Van Lanh
Published: November 2018

In this article, the microlens 2D array created in acoustic-optical medium by the ultrasonic wave modulation is proposed. The expression described the refractive index induced by cross-interference of two perpendicular ultrasonic waves is approximately derived. By simulation, the 2D array of the Gradedâ€“refractive index lenses are appeared in the thin layer with certain strain-acoutstic constant and thickness.Â  TheÂ  dependence ofÂ  focal length and the radius of lens, i.e. its numerical aperture (AN) on thickness and strain constant of layer, and ultrasonic wave intensity are simulated and trapping capability of optical tweezer array is discussed.
Transition in spacetime
Authors: Korany Mostafa Mohamed
Published: November 2018

The universe has two main dimensions spatial dimension (consists of three dimensions directional X, Y, Z) and the other dimension is the temporal dimension. Time and space are linked strongly inseparable so we will consider the time and place one Is the dimension of spacetime (as proved Einstein in his theory of relativity). Spacetime dimension includes the temporal dimension and spatial dimension (the three dimensions of space).Â  Spacetime dimension two (real spacetime â€“ Vision spacetime). Â Spacetime has two cases:Â Â Â  1- Navigate spacetimeÂ Â Â Â Â Â  2- The change in spacetime. spacetime is Personally like a fingerprint and it always variable ( everyone has Personally spacetime and there are not find two of spacetime are the same.
A Study on Formation of Hammer Transfer Stains in a Crime Scene
Authors: Bandyopadhyay Samir , Basu Nabanita
Published: November 2018

It is difficult to interpret hammer transfer strain in a crime scene. This paper lies in the argument that proper analysis of hammer transfer stains in crime scene may indicate the possibilities of proper incidence.
Effect of Annealing Temperature on The Refrective Index and Dielectric Properties of TiO2/MnO2 CORE/SHELL Thin Films
Authors: Agbo Peter Ekuma
Published: November 2018

Thin film of the form TiO2/MnO2 was deposited using the chemical bath method. The deposited thin films were annealed at temperatures of in order to investigate the effect of annealing temperature on the refractive index and dielectric property. To do this the films were characterized using UV-Spectrophotometer and XRD analysis was also carriedout to study the structural nature of the deposited film. Our results reaveled that annealing has profound effect on theindex of refraction and the dielectric properties. Â
Collisionless damping of plasma waves as a real physical phenomenon does not exist
Authors: Soshnikov V. N.
Published: November 2018

Trivial logic of collisionless plasma waves is reduced to using complex exponentially damping/growing waveÂ functions to obtain a complex dispersion equation for their wave number 1 k and the decrement/increment 2 k (for aÂ given real frequency ï· and complex wave number k ï‚º k1 ï€­ ik2 ), whose solutions are ghosts 1 2 k , k which do not haveÂ anything to do at 2 k ï‚¹ 0 with the real solution of the dispersion equation for the initial exponentially damping/growingÂ real plasma waves with the physically observable quantities 1 2 k , k , for which finding should be added, in this case, theÂ second equation of the energy conservation law. Using a complex dispersion equation for the simultaneousÂ determination of 1 k and 2 k violates the law of energy conservation, leads to a number of contradictions, is logicalÂ error, and finally also the mathematical error leading to both erroneous statement on the possible existence ofÂ exponentially damping/growing harmonic wave solutions and to erroneous values 1 k and 2 k . Mathematically correctÂ conclusion about the damping/growing of virtual complex waves of collisionless plasma is wrongly attributed to theÂ actual real plasma waves.
Broad Band Electromagnetic Interference (EMI) Shielding Properties of Polyaniline/ Polyvinyl Alcohal/ Fly Ash/ MnO2 Free Standing Films
Authors: M Revana Siddappa , SiddalingaSwamy D , Raghavendra S.C. , Ravikiran Y.T.
Published: November 2018

Microwave absorbing material (MAM) is a kind of functional material that can absorb electromagnetic wave effectively and convert electromagnetic energy into heat or make electromagnetic wave disappear by interference. These types of materials are gaining much attention in the field of civil and military applications. The present work is the report of our effort in studying the EMI-Shielding properties of conducting polyaniline (PANI) and their composites. The wet dark green precipitate and varied weight percentage (wt %) of cenosphere particles were transferred directly to the 5% polyvinyl alcohol (PVA) solution. The resulting mixture was stirred continuously for 1 hour for homogeneous distribution of the particles. The mixture was poured on to the glass plate and allowed to dry at room temperature to get freestanding PANI/FA/MnO2/PVA polymer matrix. The electromagnetic wave absorption, reflection and EMI Shielding Effectiveness (EMI SE) of the composites has been measured at X-band (8-12 GHz) micro wave frequencies. The experimental results indicate that the absorption dominated EMI SE of the composites is influenced by the fly ash weight percentage. The study suggests the prospects of the composites as effective shielding materials for a broad range of micro wave frequency.
Turbulent film condensation in a vertical tube in presence of non condensable gas
Authors: Youssef Belgassmi , Gueraoui K. , Hassanain N. , Elbouzidi A.
Published: November 2018

This paper presents the simulation of the condensation of methanol vapour in the presence of non-condensable gas in turbulent flows in a vertical tube. The liquid and gas stream are approached by two coupled turbulent boundary layer. For solving the coupled governing equations for liquid film and gas flow together with the interfacial matching conditions an implicit finite difference method is employed. The effect of the influencing parameters are studied so the effect of inlet Reynolds number, the effect of temperature gradient, mass fraction are illustrated. The numerical results demonstrate that an important concentration of no-condensable gas reduces the heat transfer coefficient and film thickness considerably. The local heat flux and film thickness increase as tube surface temperature decreases at any bulk concentration of non-condensable gas. Moreover, inlet velocity increases as film thickness decreases and heat flux increases.
Boson peak and nanostructure of chalcogenide glass-like semiconductors
Authors: R.I Alekberov
Published: November 2018

The structural features of As2Se3, As40Se30S30, As40Se30Te30, As33.3Se33.3S33.4, As33.3Se33.3Te33.4 chalcogenide glasses have been studied by Raman spectroscopy in low-energy region. The results are explained in view of nanostructure of samples, i.e. by presence of heterogeneity in samples at the nanometer scale and with change their size depending on the modification of the chemical composition.
Magnetic Moments of The Baryon Anti-decuplet and Octet Pentaquark States
Authors: Ghosh Rismita
Published: November 2018

The magnetic moments of the baryon anti-decuplet and octet-pentaquark states have been estimated in the framework of diquark-diquark-antiquark configuration using the composite fermion (CF) model of diquark suggested by us. The masses of the diquark have been estimated in the CF approach and subsequently used to estimate the magnetic moments of baryon antidecuplet and octet penta quark states. Results are compared with existing predictions.
Structural and Magnetic Hysteresis Properties of Co-Zr Substituted Hexagonal Barium Ferrites
Authors: Reddy Ch.Gopal , Venkateshwarlu Ch. , Reddy P. Vijaya Bhasker
Published: November 2018

Co-Zr substituted M-type hexagonal barium ferrites, with chemical formula BaCoxZrxFe12-2xO19 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0), have been synthesized by double sintering ceramic method. The crystallographic properties, grain morphology and magnetic properties of these ferrites have been investigated by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Vibrating Sample Magnetometer (VSM). The XRD patterns confirm the single phase with hexagonal structure of prepared ferrites. The magnetic properties have been investigated as a function of Co and Zr ion composition at an applied field in the range of 20 KOe. These studies indicate that the saturation magnetization (Ms) in the samples increases initially up to the Co-Zr composition of x=0.6 and decreases thereafter. On the other hand, the coercivity (Hc) and Remanent magnetization (Mr) are found to decrease continuously with increasing Co-Zr content. This property is most useful in permanent magnetic recording. The observed results are explained on the basis of site occupation of Co and Zr ions in the samples.
Relativistic analysis of application of Helmholtz theorem to classical electrodynamics
Authors: Chubykalo Andrew , Alvarado-Flores R. , Espinoza A.
Published: November 2018

In this work we discuss the relationship between the instantaneous-action-at-a-distance solutions of Maxwellâ€™s equations obtained using Helmholtz theorem and the Lorentzâ€™s invariant solutions of the same equations obtained using Special Relativity postulates. We show that Special Relativity postulates are not consistent with Helmholtzâ€™s theorem in the presence of charges and currents, but in the vacuum, without charges and currents, Helmholtzâ€™s theorem and Special Relativity agree because the instantaneous-action-at-a-distance solutions can be eliminated using a gauge transformation.
The markers to predict the response to neoadjuvant therapy in patients with rectal cancer
Authors: Mei Jiang Shu , Yan Hongjiang , Jin Linzhi , Dou Xue , Chen Dong , Xu Xiaoqing , Guo Hongliang , Mu Dianbin , Wang Renben
Published: November 2018

Locally advanced rectal cancer is currently treated with preoperative radiochemotherapy, but the response is not uniform. Most patients benefit from preoperative CRT, however, a small proportion of a patient population is less likely to respond to the treatment. The purpose of this study was to measure neoadjuvant therapy combined with Ki-67 and VEGF expression in pretreatment biopsies and postoperative specimensï¼Œserum carcinoembryonic antigen (CEA) and CA19-9 level from patients with locally advanced rectal cancer receiving intensive neoadjuvant treatment and to correlate the findings with clinical outcome.Â
Approximation of derivations on proper JCQ*-algebras
Authors: Kim Soo Hwan
Published: November 2018

In this paper, we prove the generalized Hyers-Ulam stability of proper JCQ*-derivations on JCQ*-triples associated to the general (m,n)-Cauchy-Jensen additive functional equation.
MATERIAL CHARACTERIZATION OF SUPERCONDUCTING NANO CRYSTALLINE CERAMIC YSrBiCuO BY THERMAL TECHNIQUES
Authors: Isac Jayakumari , Mony Anusha , G. Nair Harikrishnan , Jacob Reenu , Issac Sheelakumari , Vinila V. S. , Rajan Sam , S. Nair Anitha , Satheesh D. J.
Published: November 2018

The nano-sized ceramic superconducting material YSBCO havingÂ  perovskite structure was prepared according to the chemical formula by the thermo chemical solid state reaction technique using a high-energy ball milling process through mechanically assisted synthesis. It was characterized by XRD, SEM and EDX. Here the authours studied the thermal characterizationÂ  usingÂ  TGA, DTA and DSC.
The Measurements of Natural Radioactivity, (Radon and Gamma concentrations), around the old fertilizer factory in Basrah/Iraq
Authors: H. Jebur Jabbar
Published: November 2018

Radon concentration, exhalation rate, annual effective dose, radium activity, thorium, uranium potassium and radium equivalent have been measured in the present investigation for soil in the area around the old fertilizer factory in southern of Basrah Governorate. The measurements based on CR39 track detector for passive method, RAD7 for active method and NaI(Tl) for gamma concentration measurements. Average values for radon concentration in soil were 112.04Â±10.76 Bq/m3 using passive technique and 104.56Â±6.05 Bq/m3 using RAD7. From the result of the passive technique, area and mass exhalation rates and the annual effective dose were calculated. Gamma ray spectroscopy for the soil samples were performed and found that the average concentrations of 226Ra, 232Th and 40K were 50.89 Bq/kg, 21.74 Bq/kg and 640.4 Bq/kg respectively. Gamma ray hazard indices were calculated and found they are within the world average.
Structure of Superdeformed Rotational Bands in A ~ 150 Mass Region
Authors: Kotb Mahmoud , Khalaf A.M. , Altalhi F.A.
Published: November 2018

The structure of superdeformed rotational bands (SDRB's) in A ~ 150 mass region are studied by using the Harris three â€“ parameter expansion and the incremental alignment. The bandhead spins Io have been determined with best fit procedure in order to obtain a minimum root mean square deviation between the calculated and the experimental dynamical moments of inertia. The kinematic moment of inertia has been calculated as a function of rotational frequency and compared to the corresponding experimental ones by assuming three spin values Io - 2 , Io , Io + 2. The transition energies and the variation of the moments of inertia as a function of rotational frequency have been calculated. The agreement between theory and experiment are excellent. The identical bands of SDRB's with Î”I = 2 staggering in 148Gd (SD6) and 149Gd (SD1) are investigated. Also the presence of Î”I = 2 staggering effect in the yrast bands of 147Eu and 150Tb has been examined.
Experimental Confirmation of Avogadroâ€™s Law for Thermal Radiation
Authors: Ivanov Mikhail Jakovlevich , Mamaev Vadim Konstantinovich , Tsvetkov Igor Viktorovich , Zhestkov Grigoriy Borisovich
Published: November 2018

Experimental study of pressure variation in metal empty sealed container in low vacuum conditions (0.1-10 mbar) for temperature range from 290 to 1490 K is presented. Three characteristic areas of pressure variation were registered: the pressure growth in accordance with Avogadroâ€™s law in the temperature range from 290 to 700-800 K, the pressure drop in the temperature range from 800 to 1300 K and again the intensive pressure increasing in the temperature range from 1300 to 1490 K.Â  Possible causes of registered pressure variation in sealed container with increasing temperature and then cooling to its original conditions were analyzed. One of the more active causes is thermal radiation action in metal empty sealed container.
On the Zitterbewegung Transient Regime in a Coarse-Grained Space-Time
Authors: Weberszpil JosÃ© , HelayÃ«l-Neto J. A.
Published: November 2018

In the present contribution, by studying a fractional version of Diracâ€™s equation for the electron, we show that the phenomenon of Zitterbewegung in a coarse-grained medium exhibits a transient oscillatory behavior, rather than a purely oscillatory regime, as it occurs in the integer case, . Our result suggests that, in such systems, the Zitterbewegung-type term related to a trembling motion of a quasiparticle is tamed by its complex interactions with other particles and the medium. This can justify the difficulties in the observation of this interesting phenomenon. The possibility that the Zitterbewegung be accompanied by a damping factor supports the viewpoint of particle substructures in Quantum Mechanics.
Magnetic and dielectric properties of BiFeO3 nanoparticles
Authors: VIJAYALAKSHMI Dr R.P , Manjula N. , Ramu S. , Reddy Amaranatha
Published: November 2018

Single crystalline nano-sized multiferroic BiFeO3 (BFO) powders were synthesized through simple chemical co-precipitation method using polyethylene glycol (PEG) as capping agent. We obtained pure phase BiFeO3 powder by controlling pHand calcination temperature. From X-ray diffraction studies the nanoparticles were unambiguously identified to have a rhombohedrally distorted perovskite structure belonging to the space group of R3c. No secondary phases were detected. It indicates single phase structure. EDX spectra indicated the appearance of three elements Bi, Fe, O in 1:1:3. From the UV-Vis diffuse reflectance spectrum, the absorption cut-off wavelength of the BFO sample is around 558nm corresponding to the energy band gap of 2.2 eV. The size (60-70 nm) and morphology of the nanoparticles have been analyzed using transmission electron microscopy (TEM). Â Â Linear Mâˆ’H behaviour and slight hysteresis at lower magnetic field is observed for BiFeO3 nanoparticles from Vibrating sample magnetometer studies. It indicates weak ferromagnetic behaviour at room temperature. From dielectric studies, the conductivity value is calculated from the relation s = L/RbA Sm-1 and it is around 7.2 x 10-9 S/m.
The Theory of Elementary Waves (TEW) eliminates Wave Particle Duality
Authors: Boyd Jeffrey H
Published: November 2018

Wave particle duality is a mistake. Another option was neither conceived nor debated, which is a better foundation for quantum mechanics. The Theory of Elementary Waves (TEW) is based on the idea that particles follow zero energy waves backwards. A particle cannot be identical with its wave if they travel in opposite directions. TEW is the only form of local realism that is consistent with the results of the experiment by Aspect, Dalibard and Roger (1982). Here we show that 1. although QM teaches that complementarity in a double slit experiment cannot be logically explained, TEW explains it logically, without wave function collapse, and 2. gives an unconventional explanation of the Davisson Germer experiment. 3. There is empirical evidence for countervailing waves and particles and 4. zero energy waves. 5. TEW clarifies our understanding of probability amplitudes and supports quantum math. 6. There is an untested experiment for which TEW and wave particle duality predict different outcomes. If TEW is valid, then wave particle duality is not necessary for quantum math, which is the most accurate and productive science ever. With a more solid foundation, new vistas of science open, such as the study of elementary waves.
A New Model for a Non-Linear Electromagnetic Model with Self-Interacting Photons
Authors: Doria Renato , Helayel J. , Chaichian M. , Spallucci E. , Cantcheff M. Botta , Shabad A.
Published: November 2018

A new electromagnetism is still expected to be developed. Thus, under such a principlewhere nature works as a group, an electromagnetism beyond Maxwell is studied. It considersthat light metric antecedes electric charge for founding the EM phenomena. Based on wholenessprinciple, Lorentz group and gauge invariance this electromagnetism sticked on light is proposed.Then, by electromagnetism it will be understood the physics derived from Lorentz group potentialfields family (for simplicity other fields are not included). New electromagnetic fields,sectors, layers and regimes are developed. It yields a branch with transversal and longitudinalEM fields, granular and collective sectors, I-fields layers and four regimes (photonic, massive,neutral, charged) connected through a global photon. Their relationships are determined by astate equation identified as Global Maxwell equation. It contains new Gauss and Ampere laws,exclusive Faraday law for polarization and magnetization vectors, divergenceless magnetizationvector having fields as sources, self-interacting photons mediated by a dimensionless couplingconstant and other features. It is complemented by a Global Lorentz equation which besidesthe usual Lorentz force add forces depending on mass and on potential fields.