Discovery potential of the NMSSM CP-odd Higgs at the LHC
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): M.M. AlmarashiAbstractIn this paper we examine the LHC discovery potential of the lightest CP-odd Higgs boson, a1, of the NMSSM produced in gluon fusion channel gg→a1. We evaluate the inclusive signal rates of the a1 for a variety of decay channels and discuss its possible discovery. It is observed that the overall production and decay rates at inclusive level are quite sizable and should help extracting the a1 signal over some regions of the NMSSM parameter space. (Source: Results in Physics)
Source: Results in Physics - August 8, 2018 Category: Physics Source Type: research

Gravitational-magnetic-electric field interaction
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Yin ZhuAbstractFrom gravitational redshift/blueshift and the law of conservation of energy, we obtained equations, Δg=fG/μ0B and Δg=fGε0E, for the interaction between gravitational and magnetic/electric field. The variation of gravitational acceleration Δg is determined with the gravitational redshift parameter ƒ and the magnetic flux density B or the electric field intensity E; G, μ0 and ε0 are gravitational, magnetic and electric constant. The equations show that the variation of the gravitational ...
Source: Results in Physics - August 8, 2018 Category: Physics Source Type: research

Controlling straight line motion up to quantum levels by quantum measurements
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Yong-Yi HuangAbstractA classical charged particle moves along a straight line and interacts with a silver atom in its ground state fixed at the origin of coordinates through Biot-Savart coupling. If the silver atom initially lies in a spin superposition state of valence electron, in the co-moving reference frame the projected measurements of the spin of silver’s valence electron along the z direction determine the moving direction of the charged particle. The projected measurements of that spin along the x or the y direction yield straigh...
Source: Results in Physics - August 8, 2018 Category: Physics Source Type: research

Structural, magnetic, dielectric and high frequency response of synthesized rare earth doped bismuth nano garnets (BIG)
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Majid Niaz Akhtar, T. Hussain, Muhammad Azhar Khan, Mukhtar AhmadAbstractRare earth doped bismuth (Bi) iron garnets (BIG) having composition Bi3−xRxFe5O12 for x = 1.5 (here R stands for rare earth elements like Y, Gd, Pr, Ho and Yb) have been studied in this work. The samples were prepared using sol-gel method. X-Ray diffraction (XRD), Scanning electron microscope (SEM), Fourier transform infrared spectroscope (FTIR), Vibrating sample magnetometer (VSM) and Vector network analyzer (VNA) were employed on the samples to evaluate the pro...
Source: Results in Physics - August 7, 2018 Category: Physics Source Type: research

Glow curve analysis of glassy system dosimeter subjected to photon and electron irradiations
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): M.H.A. Mhareb, M. Maghrabi, Y.S.M. Alajerami, S. Hashim, S.K. Ghoshal, M.A. Saleh, K.M. AbushabAbstractThe current paper illustrates glow curve analysis of newly developed Borate glass dosimeters. A series of dosimetric properties including dose response for photons and electrons, energy response, optical fading, and precision were determined. Glow curve deconvolution based on the general order kinetics equation was applied to extract the trapping parameters. Excellent fitting was obtained with the superposition of three-second order glow peaks...
Source: Results in Physics - August 6, 2018 Category: Physics Source Type: research

Numerical investigation of co-doped microstructured fiber with two zero dispersion wavelengths
This article presents an octagonal photonic crystal fiber (O-PCF) in which both cladding and core are microstructured. Three cases of microstructure core doped with high refractive index materials like germanium dioxide (GeO2), Carbon disulphide (CS2) and undoped O-PCF studied separately. Using the full vectorial finite element method (FEM) each optical characteristics have been investigated and compared with each case of the proposed PCF for the telecommunication window. By using a modest number of design parameters, the proposed design achieved two zero dispersion wavelengths (ZDW) which can be utilized to adapt the char...
Source: Results in Physics - August 5, 2018 Category: Physics Source Type: research

Numerical simulation for MHD Williamson fluid utilizing modified Darcy’s law
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): T. Hayat, Sadia Ayub, Anum Tanveer, Ahmed AlsaediAbstractObjective of present investigation is to study peristaltic flow of MHD Williamson fluid in a planar symmetric channel. An incompressible fluid occupies the porous medium in a channel. Unlike the traditional approach, the modified Darcy’s law of Williamson fluid is utilized in the modeling. Numerous attempts for this aspect in non-Newtonian fluids have been made just by employing classical Darcy’s law of viscous fluid which is not correct. Heat and mass transfer equations are s...
Source: Results in Physics - August 3, 2018 Category: Physics Source Type: research

Review of optical fibers-introduction and applications in fiber lasers
In this report, we focus on the first three common types of optical fibers. As a common application of the fibers, these can be used in fiber lasers to create and amplify a narrow intense beam of coherent and monochromatic light. Fabrication of optical fiber involves three stages such as the preform formation. Modified chemical vapor deposition (MCVD) method is a known technique, which can be used to fabricate the optical fibers. Optical fiber sensors are well known for wide range applications in optics and photonics. As a sensing application, optical biosensors can be made based on the refractive index changes that used w...
Source: Results in Physics - August 1, 2018 Category: Physics Source Type: research

Effect of alumina nano-particle size and weight content on the corrosion resistance of AA1070 aluminum in chloride/sulphate solution
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Roland Tolulope Loto, Phillip BabalolaAbstractThe effect of specific alumina (Al2O3) nano-particle sizes (500 nm and 80 nm) and weight content (5% and 10%) on the electrochemical characteristics and corrosion resistance of AA1070 monolithic aluminum alloy (1070AL) in 0.1 M H2SO4, 1.78% NaCl and 0.1 M H2SO4/1.78% NaCl solutions was evaluated by potentiodynamic polarization test, open circuit potential measurement and optical microscopy analysis. The composite specimens at 80 nm particle size generally had lower corrosion rates than the...
Source: Results in Physics - July 31, 2018 Category: Physics Source Type: research

Effect of deposition runs on the physical properties of In2S3 chemically synthesized for photocatalytic application
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Yassine Ben Salem, Mouna Kilani, Najoua KamounAbstractPolycrystalline In2S3 thin films have been prepared using low cost chemical bath deposition technique on SnO2/Pyrex substrate. In this work, we have investigated the effect of multilayer deposition on physical proprieties of the In2S3 thin films from 1 to 6 deposition runs with the aim of optimizing them for photocatalytic application. The structure, the surface morphology and the optical properties of In2S3 films were studied by X-ray diffraction (XRD), Transmission electron microscopy (TEM...
Source: Results in Physics - July 30, 2018 Category: Physics Source Type: research

The effect of thickness on the structural and optical properties of nano Ge-Te-Cu films
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): A. El-Denglawey, M.M. Makhlouf, M. DongolAbstractQuartz was used as a substrate to hold different film thicknesses of Ge0.15Te0.78Cu0.07 within range 100–500 nm prepared by thermal evaporation technique. Films are still amorphous up to 200 nm and turn to more ordered nano polycrystalline one by ascending the values of film thickness up to 500 nm. Films turn to crystalline phase due to annealing. The relation of resistance and temperature shows phase transformation. Optical constants; refractive index, n absorption coefficient, &alph...
Source: Results in Physics - July 30, 2018 Category: Physics Source Type: research

Mixing characteristics in a vessel equipped with cylindrical stirrer
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Pan Zhang, Guanghui Chen, Jihai Duan, Weiwen WangAbstractIn this work, the mixing characteristics in a vessel equipped with a cylindrical stirrer were investigated experimentally and numerically in an unbaffled tank. The cylinder stirrer is a cylinder with four openings and four wing panels symmetrically distributed. Mixing characteristics were measured by adding second tracer. The shaft-torque method was applied for the power consumption measurement. Tap water was used as the continuous phase and starch solution was the dispersed phase. CFD in...
Source: Results in Physics - July 29, 2018 Category: Physics Source Type: research

Non-minimal matter-geometry coupling in Bianchi I space-time
Publication date: Available online 25 July 2018Source: Results in PhysicsAuthor(s): Lokesh Kumar Sharma, Anil Kumar Yadav, P.K. Sahoo, Benoy Kumar SinghAbstractIn this paper, we have searched the existence of non-minimal matter-geometry coupling govern by power law in Bianchi I space-time. The energy and stability conditions are applied in the derived model to check the stability of the model and to obtain the certain range of values for the free parameters of the model that yield well behaved accelerating model of universe. We have also constructed a Lagrangian model which is based on f(R,T)=f1(R)+f2(R)f3(T) and it’...
Source: Results in Physics - July 25, 2018 Category: Physics Source Type: research

Effect of Sn doping in Optical properties of Se-Ge glass and glass-ceramics
In this study, Se60Ge40 glass systems were synthesized with different amounts of tin at 850°C and quenched in salt bath. In order to improve hardness of the glasses, those were annealed at a temperature of 20°C higher than the Glass Transition Temperature (Tg) for 4 hours. Crystalized GeSe and SnSe phases were determined via X-ray Diffraction(XRD) analysis. Fermi energy, over-batch energy, and direct and indirect band gap energies were calculated using Ultraviolet–visible spectroscopy (UV spectra). Physical properties including hardness, coordination number, and density were investigated, with the influence o...
Source: Results in Physics - July 25, 2018 Category: Physics Source Type: research

The major influence of the conduction-band-offset on Zn(O, S)/CuIn0.7Ga0.3Se2 solar cells
In this study, we simulated this kind of CIGS thin-film solar cell with the variation of Zn(O, S) affinity until an optimal interval which corresponds to the best efficiency of 20.63% where the affinity of CIGS remains constant. Its optimal value is around 4.58 eV for a (gallium/indium) ratio of 0.3 eV corresponds to a band gap energy of 1.17 eV as it is already demonstrated by several groups (Repins et al., 2008, Powalla et al., 2009) and the resulting Conduction Band Offsets (CBO) between CIGS and Zn(O, S) can range from −0.2 to +1.2 eV if the full range of the (oxygen/sulfur) ratio is considered from the p...
Source: Results in Physics - July 24, 2018 Category: Physics Source Type: research

Nano-capacitor-like Model using Light Trapping in Plasmonic Island Embedded Microring System
Publication date: Available online 21 July 2018Source: Results in PhysicsAuthor(s): J. Ali, P. Youplao, N. Pornsuwancharoen, M.A. Jalil, S. Chiangga, I.S. Amiri, S. Punthawanunt, M.S. Aziz, G. Singh, P. Yupapin, K.T.V. GrattanAbstractWe have proposed the convincing electro-optic circuit for long life-time electron mobility emission. Light a monochromatic source is utilized as input into the circuit via the input port and trapped within the plasmonic island. It is a formed-like capacitor structure formed by the silicon-graphene-gold materials which are stacked layers. All circuit port ends have added the TiO2 to form the re...
Source: Results in Physics - July 21, 2018 Category: Physics Source Type: research

Boundary layer flow and heat transfer of a modified second grade nanofluid with new mass flux condition
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Masood ur Rahman, Masood Khan, Mehwish ManzurAbstractThe purpose of the current problem is to analyze the nano boundary layer flow and heat transfer of the modified second grade fluid over a non-linearly stretching surface. A newly introduced boundary condition of zero nanoparticle mass flux is incorporated for the analysis. The appropriate local similarity transformations are employed to transform the modeled partial differential equations of momentum, temperature and concentration into coupled non-linear ordinary differential equations. The g...
Source: Results in Physics - July 21, 2018 Category: Physics Source Type: research

Heat treatment and kinetics of Precipitation of β-Mg17Al12 phase in AZ91 Alloy
This study investigated the effect of aging on the precipitation and kinetics of second phase Mg17Al12 in AZ91 magnesium alloy (Mg- 9 wt. % Al- 1 wt. % Zn), using X-ray diffraction, microhardness measurements and differential scanning calorimetric analysis (DSC). With the last instrument, the all samples were heated from room temperature to 400 °C, at heating rates of 10 to 30 °C/min. The results were supplemented by measuring the average of activation energies, using isothermal treatments by Johnson−Mehl−Avrami (JMA) methods and by non-isothermal treatments using Ozawa, Boswell, Kissinger, Mahadevan, A...
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Particles and Quantum Waves Diffusion in Physical Vacuum
Publication date: Available online 20 July 2018Source: Results in PhysicsAuthor(s): Arvydas Juozapas JanavičiusAbstractThe new quantum waves’ diffusion equation based on Heisenberg uncertainties and De Broglie’s frequencies of waves is presented. The free movement and quantum diffusion through a rectangular barrier are considered. We find a quantum diffusion coefficient and radii of bound systems. The obtained formula connecting radii and bound energies of simple quantum systems, such as a hydrogen atom, deuteron and mesons, consisted of quarks. (Source: Results in Physics)
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Order and excitations in site diluted quantum antiferromagnet in the triangular lattice
Publication date: Available online 19 July 2018Source: Results in PhysicsAuthor(s): L.S. LimaAbstractIn this work we use the linear spin-wave approximation to study the quantum two-dimensional Heisenberg model on triangular lattice in the presence of nonmagnetic impurities. In particular we discuss how site disorder changes the ground-state properties of this important frustrated antiferromagnetic spin system. Our main focus is on the role of the nonmagnetic impurities which generates an influence of the quantum order-disorder transition and the effect of the ground-state spin structure in many spin systems. (Source: Results in Physics)
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Hydrothermal synthesis and luminescent properties of Y2O3:Eu3+ from waste phosphors
Publication date: Available online 19 July 2018Source: Results in PhysicsAuthor(s): Mingming Yu, Xiaodong Chen, Guangjun MeiAbstractEuropium-doped yttrium oxide (Y2O3:Eu3+) phosphors were successful synthesized by hydrothermal method from waste phosphors in the presence of sodium citrate. The synthesized samples were characterized by X-ray diffraction, scanning electron microscopy and photoluminescence spectroscopy. The experimental results showed that the morphology and photoluminescent properties of the obtained samples had a strong dependence on the concentrate of sodium citrate, the addition amount of NaOH and Eu in th...
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

New transform iterative method for solving some Klein-Gordon equations
In this study, we treat some Klein-Gordon equations (KGEs). We propose a novel iterative approach called the Elzaki iterative method (EIM). This method, which clearly depends on the choice of the initial values, is based on the new iteration method (NIM) and the Elzaki transformation. We show that the EIM could be more valid and reliable approach than the NIM. We propose an analytical approximation of a solution for KGEs for which only a few iterations are necessary to obtain a semi-analytical solution without a loss of precision. (Source: Results in Physics)
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Excellent Near-Infrared Transmission of Zr-based Thin Film Metallic Glasses
Publication date: Available online 19 July 2018Source: Results in PhysicsAuthor(s): Haitao Zong, Chenchen Geng, Chaoyang Kang, Guohua Cao, Lixin Li, Baoqing Zhang, Ming LiAbstractZr50Cu50, Zr47Cu44Al9, Zr46.3Cu43.4Al8.3Nb2 and Zr41.2Ti13.8Cu17.5Ni5Be22.5 thin film metallic glasses (TFMGs) were prepared by pulsed laser deposition (PLD) on glass substrates at room temperature. The effect of thickness on the electrical and optical properties of the Zr-based TFMGs was investigated. It was found that the resistivity of the Zr-based TFMGs basically decreased as the thickness varied from 10 nm to 40 nm. Interestingly, while the t...
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Experiments and Numerical Simulation for a Thermal Vertical Jet into a Rectangular Water Tank
Publication date: Available online 19 July 2018Source: Results in PhysicsAuthor(s): Mohamed F. El-Amin, Abdulmajeed Al-GhamdiAbstractIn this paper, experimental measurements and numerical CFD calculations are carried out for the problem of a vertical thermal water jet into a rectangular water tank. We consider two cases; the first case is to inject a hot-water jet with a uniform inlet temperature (UIT) into a cold-water tank. The second case is to inject a cold-water jet with non-uniform inlet temperature (NUIT) into a hot-water tank. In the UIT case, we examine the effects of the temperature-difference. In the case of NUI...
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Opto-electric Property Relationship in Phosphorus Embedded Nanocarbon
We report here that the composite produced in this study from nanocarbon by adding phosphorous atoms shows unique photoluminescent property in particular due to the dominance of quantum confinement and oxygen functionalities. The observed increase in the dielectric strength, which results from interfacial polarization and its frequency independent nature, is desirable for the fields such as supercapacitor, sensor, stealth applications etc.Graphical abstractSchematic representation of synthesis of nanocarbon. (Source: Results in Physics)
Source: Results in Physics - July 20, 2018 Category: Physics Source Type: research

Detection of Eccentricity Fault Based on Vibration in the PMSM
Publication date: Available online 18 July 2018Source: Results in PhysicsAuthor(s): Ferhat ÇıraAbstractThis paper presents how to diagnose faults in static and dynamic eccentricity of a rotor by observing the vibration of permanent magnet synchronous motor. The radial electromagnetic force density of the permanent magnet synchronous motor is represented as the square of the air-gap flux density based on the Maxwell stress tensor, which is applied to the stator to cause the vibration. The distribution of air-gap flux density changes with the static and dynamic eccentricity so the changes of vibration order and frequ...
Source: Results in Physics - July 19, 2018 Category: Physics Source Type: research

Friction performance of 3D printed ball bearing: Feasibility study
In this study, the friction performance of 3D printed ball bearing is evaluated to verify its feasibility as an engineering part. Multi-jet printing (MJP) method is utilized to prepare the ball bearing specimen as it provides the advantages of straightforward manufacturing process and high surface quality. The test rig is designed and constructed to evaluate the friction performance under various rotating speed and radial load conditions. From the experiments, the friction performance and feasibility of 3D printed ball bearings are evaluated, and effective operating conditions of 3D printed bearings are recommended. The re...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Roles of TiO2 buffer layer for preparation of high performance VO2 thin films with Monoclinic polymorph
Publication date: Available online 18 July 2018Source: Results in PhysicsAuthor(s): Cong Zhang, Chaoyang Kang, Haitao Zong, Shanshan Liang, Chenchen Geng, Ming LiAbstractVanadium dioxide (VO2) thin films with pure Monoclinic phase could be transformed from B-phase by inserting TiO2 buffer layers on transparent amorphous glass substrates at the low temperature of 400°C.This crystalline transformation might be ascribed to oxygen-deficient environment induced by the TiO2 buffer layer and the template effect of TiO2 layer for M-VO2 phase. The simplicity in phase regulation of the present method and the superior optical and...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

The fatigue damage evaluation of gear in sugarcane presser using higher order ultrasonic nonlinear coefficients
Publication date: Available online 18 July 2018Source: Results in PhysicsAuthor(s): Hanying Mao, Yuhua Zhang, Hanling Mao, Zhenfeng Huang, Jianwen Fan, Xinxin Li, Xiaoping LiAbstractThe fatigue damage of gear in sugarcane presser is one of the most common damages, which is very difficult to detect in sugar factory. The nonlinear ultrasonic technique is used to evaluate the fatigue damage of gear in this paper. The perturbation method is applied to solve the nonlinear wave equation, the relationship between relative nonlinear coefficient and higher harmonics is analyzed which the second and third order relative nonlinear co...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

High sensitive temperature sensor silicon-based microring resonator using the broadband input spectrum
This study opens a way to apply optical sensors by using broadband SC as a source for manufacturing temperature environments sensors within the MRR waveguide structures. This will enhance the ability of the current temperature sensors to function at different and long wavelength band. (Source: Results in Physics)
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Entropy and Heat Transfer Analysis Using Cattaneo-Christov Heat Flux Model for a Boundary Layer Flow of Casson Nanofluid
Publication date: Available online 17 July 2018Source: Results in PhysicsAuthor(s): Asif Mahmood, Wasim Jamshed, Asim AzizAbstractA numerical investigation of Casson nanofluid flow, heat transfer and entropy generation over a horizontal porous stretching surface is carried out in the present research. The simplified flow model includes the effect of Lorentz forces, Cattaneo-Christov heat flux, thermal radiation and non-uniform stretching of porous surface. Similarity technique is employed to reduce the governing nonlinear partial differential equations to a set of nonlinear ordinary differential equations. The resulting se...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Size matching effect on Wenzel wetting on fractal surfaces
Publication date: Available online 17 July 2018Source: Results in PhysicsAuthor(s): Qiang ZengAbstractMaterials with fractal structures may show distinct features of wetting. Here we report the characteristics of wetting of liquid caps on fractal surfaces in the Wenzel wetting regime. It shows that the relationship between the apparent and Young’s contact angles is associated with the size-matching degree or discrepancy between the liquid caps and substrate. An explicitly fractal-dimension-and size-related equation is developed to bridges over the apparent contact angle and the Young’s contact angle, and valida...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

MAPbI3 and FAPbI3 Perovskites as Solar Cells: Case Study on Structural, Electrical and Optical Properties
Publication date: Available online 17 July 2018Source: Results in PhysicsAuthor(s): Farhad Fouladi Targhi, Yousef Seyed Jalili, Faramarz KanjouriAbstractRecently, hybrid organic-inorganic perovskite (HOIP) solar cells with AMX3-perovskite-based photovoltaics have opened up a new paradigm in solar cell fabrication. Among numerous studies on these novel materials, there are limited researches that compare theoretical and experimental results simultaneously. Here, we have investigated the most feasible structures -MAPbI3 and FAPbI3- utilized as efficient active layers in HOIP solar cells. To this end, the proposed structures ...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Study on selective laser melting and heat treatment of Ti-6Al-4V alloy
Publication date: Available online 17 July 2018Source: Results in PhysicsAuthor(s): Fan Zhechao, Feng HongweiAbstractThe effects of process parameters of laser additive manufacturing (laser power, scanning speed, scanning direction) and heat treatment on the microstructure and properties of Ti-6Al-4V titanium alloy forming parts were studied under coaxial powder feeding. The results show that the columnar crystals of the Ti-6Al-4V forming parts made by laser material are all wechsler structure, and there are obvious layers in the layer; The strength of laser reinforced Ti-6Al-4V titanium alloy parts exceeds the requirement...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

The major influence of the Conduction-Band-Offset on Zn (O, S)/Cu In0.7Ga0.3Se2 Solar Cells
In this study, we simulated this kind of CIGS thin-film solar cell with the variation of Zn(O, S) affinity until an optimal interval which corresponds to the best efficiency of 20.63 % where the affinity of CIGS remains constant. Its optimal value is around 4.58 eV for a (gallium / indium) ratio of 0.3 eV corresponds to a band gap energy of 1.17 eV as it is already demonstrated by several groups [3], [4] and the resulting Conduction Band Offsets (CBO) between CIGS and Zn(O, S) can range from −0.2 to +1.2 eV if the full range of the (oxygen/sulfur) ratio is considered from the pure ZnO to the pure ZnS.The simulation t...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Impact of dust aerosols on precipitation associated with atmospheric rivers using WRF-Chem simulations
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): A.R. NaegerAbstractThe trans-Pacific transport of dust aerosols to the western United States coincided with the landfall of an atmospheric river (AR) from 17 to 18 February 2011 during the California Water Service (CalWater) field campaign in northern California. Weather Research and Forecasting model with Chemistry (WRF-Chem) simulations are conducted to quantitatively understand the impact of long-range transported (LRT) dust aerosols on precipitation processes associated with AR events impacting the western United States. The simulations sho...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Theoretical aspects of Brownian motion and thermophoresis on nonlinear convective flow of magneto Carreau nanofluid with Newtonian conditions
This article addresses magnetohydrodynamic (MHD) nonlinear convective stagnation point flow of Carreau nanofluid towards a stretching sheet with chemical reaction. Analysis is carried out in the presence of Newtonian conditions of heat and mass transfer. Brownian motion and thermophoresis phenomena have been utilized in energy and concentration expressions. Appropriate variables lead to development of nonlinear ordinary differential systems. Results for velocity, thermal field, nanoparticles concentration, skin friction and local Nusselt and Sherwood numbers are presented and investigated. Here higher values of material pa...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

A novel technique of reduce order modelling without static correction for transient flow of non-isothermal hydrogen-natural gas mixture
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): B.G. Agaie, I. Khan, Z. Yacoob, I. TliliAbstractIn this effort towards zero carbon emission of energy generation, Hydrogen Natural Gas Mixture (HCNG) is considered as energy source. This paper focuses on transient flow of HCNG in a pipelines under non-isothermal condition, using a modern technique of Reduced Order Modelling (ROM) technique. The effect of mass ration, body force and pipeline environmental temperature profile is investigated. The pipeline surrounding temperature effect HCNG flow parameters as shown in the results. The increase in...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Role of Mn2+ ions on optical and luminescent properties of CaF2–Y2O3–ZnO–B2O3–SiO2 glasses
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): G. Ravi Kumar, S. Uday Baskar, M.C. RaoAbstractMnO doped CaF2–Y2O3–ZnO–B2O3–SiO2 glasses were synthesized. Different physical parameters of these glass materials such as density, molar volume, electronegativity, optical basicity and refractive index were calculated. The glass transition and glass crystallization temperatures of these glasses were measured by DTA analysis. The mechanical properties such as Young’s modulus, Shear modulus, Bulk modulus, Poisson’s ratio and microhardness of these materials were a...
Source: Results in Physics - July 18, 2018 Category: Physics Source Type: research

Investigation of convective-conductive heat transfer in geothermal system
Publication date: Available online 11 July 2018Source: Results in PhysicsAuthor(s): P. Jalili, D.D. Ganji, S.S. NourazarAbstractGeothermal energy is one of the well-known types of renewable energies that can be considered as a promising alternative to fossil fuels in order to mitigate the CO2 emission in atmosphere. Geothermal energy has recently been used for heating and cooling systems in many countries of the world. Therefore, studying such kind of energy seems important and necessary. This paper studies the heat transfer processes in a borehole heat exchanger (BHE). The flow of fluid in a BHE has been considered with d...
Source: Results in Physics - July 11, 2018 Category: Physics Source Type: research

Corrosion Inhibition of Mild Steel in HCl Medium by S-benzyl-O,O'-bis(2-naphthyl)dithiophosphate with Ultra-long Lifespan
Publication date: Available online 11 July 2018Source: Results in PhysicsAuthor(s): Chengduan Wang, Chuan Lai, Bin Xie, Xiaogang Guo, Dong Fu, Bin Li, Shasha ZhuAbstractHerein, the target compound of S-benzyl-O,O'-bis(2-naphthyl)dithiophosphate (SBOB) as corrosion inhibitor with ultra-long lifespan was successfully synthesized and characterized by elemental analysis, single crystal X-ray diffraction and spectroscopy involving FT-IR, 1H, 13C and 31P NMR. Meanwhile, the inhibition performance and mechanism of SBOB for mild steel (MS) in HCl medium were combined to investigate by weight loss, potentiodynamic polarization, ele...
Source: Results in Physics - July 11, 2018 Category: Physics Source Type: research

Chaotic Darcy-Brinkman convection in a fluid saturated porous layer subjected to gravity modulation
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Moli Zhao, Shaowei Wang, S.C. Li, Q.Y. Zhang, U.S. MahabaleshwarAbstractOn the basis of Darcy-Brinkman model, the chaotic convection in a couple stress fluid saturated porous media under gravity modulation is investigated using the nonlinear stability analyses. The transition from steady convection to chaos is analysed with the effect of Darcy-Brinkman couple stress parameter and the gravity modulation. The results show that the chaotic behavior is connected with the critical value of Rayleigh number which is dependent upon the oscillation frequency ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Numerical prediction of the energy efficiency of the three-dimensional fish school using the discretized Adomian decomposition method
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Yinwei LinAbstractA three-dimensional modeling of fish school performed by a modified Adomian decomposition method (ADM) discretized by the finite difference method is proposed. To our knowledge, few studies of the fish school are documented due to expensive cost of numerical computing and tedious three-dimensional data analysis. Here, we propose a simple model replied on the Adomian decomposition method to estimate the efficiency of energy saving of the flow motion of the fish school. First, the analytic solutions of Navier-Stokes equations are used...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

New exact travelling wave solutions for space-time fractional nonlinear equations describing nonlinear transmission lines
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): M.A. Abdou, A.A. SolimanAbstractIn this paper, we examines the effectiveness of newly developed algorithms called the exp(-ϕ(ξ))-expansion function method and generalized Kudryashov method for constructing new and important travelling wave solutions of space-time fractional nonlinear differential equations. The fractional differential equation is converted into ordinary differential equations with the help of fractional complex transform and the modified Riemann Liouville derivative sense. The validity and reliability the proposed methods are tes...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Control parameter & solutions to generalized evolution equations of stationarity, relaxation and diffusion
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Emile Franc Doungmo Goufo, Yazir Khan, Stella MugishaAbstractIt has become a conjecture that power series like Mittag-Leffler functions and their variants naturally govern solutions to most of generalized fractional evolution models such as kinetic, diffusion or relaxation equations. Is this always true? In this article, three generalized evolution equations with additional fractional parameter are solved analytically with conventional techniques. They are processes related to stationary state system, relaxation and diffusion. In the analysis, we exp...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Dynamical environment in the vicinity of asteroids with an application to 41 Daphne
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Yu JiangAbstractWe studied the dynamical environment in the vicinity of the primary of the binary asteroid. The gravitational field of the primary is calculated by the polyhedron model with observational data of the irregular shape. The equilibrium points, zero-velocity surfaces, as well as Jacobi integral have been investigated. The results show that the deviations of equilibrium points are large from the principal axes of moment of inertia. We take binary asteroid (41) Daphne and S/2008 (41) 1 for example. The distribution of topological cases of e...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

The effect of deposition time on the structural properties of silver nanoparticles deposited on anodic alumina templates
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Sahar RezaeeAbstractIn order to study the effect of deposition time on silver nanoparticles structure, alumina templates with nano-Ag patterns were investigated. After the preparation of alumina templates by anodic oxidation method, the silver coatings were performed using ion beam sputtering method in a vacuum chamber. The effect of deposition time on the properties of Ag nanoparticle deposited on alumina templates was studied through energy dispersive X-ray (EDX) spectrometer, scanning electron microscopy (SEM), X-ray diffraction analysis (XRD), an...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Investigation on ethylene glycol Nano fluid flow over a vertical permeable circular cylinder under effect of magnetic field
Conclusions indicate that: The thickness of the thermal boundary layer changes more than the thickness of the hydro-dynamic boundary layer for injection and suction. Also, due to the higher thermal conductivity of silver nanoparticles, the temperature increase in these nanoparticles is more than that of copper. In fact, this paper shows that the heat transfer rate increases with the addition of nanoparticles. In addition, the role of the curvature parameter (γ) on the concentration profile shows that the concentration profile decreases with the gradual increase of γ. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Disorder induced transition of electrical properties of graphene by thermal annealing
We report the transport behavior of bilayer graphene grown by thermal chemical vapor deposition. The bilayer graphene films annealed at 700 °C in a furnace under Ar atmosphere exhibited transitions from a metal to a semiconductor or insulator, with temperature-dependent resistances. This modulation of electrical properties could be explained by two possible mechanisms: variable range hopping (VRH) and thermally activated (TA) conduction. In particular, Anderson localization was suggested for the metal-insulator (MI) transition in the transport of bilayer graphene, shifting the transition point to room temperature by ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Plasmonic nanoparticles enhancing blue emission from nematic liquid crystal
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Yanling Liu, Yanbang Zhang, Yi Tang, Zejia Zhao, Qingqing Wang, Guozhi JiaAbstractThe photoluminescence (PL) performance of 5CB (n-pentyl-n′-cyanobiphenyl) containing with various concentrations of Ag and Au nanoparticles have been investigated. The PL enhancement and quenching of 5CB are found when the concentrations of dopants are in range of 60–80 μL and 40–60 μL, respectively. Associated with localized surface plasmon (LSP) resonance effect from Ag nanoparticles, the maximum emission enhancement of 5CB is about 1.8-fol...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research