Numerical treatment for hydro-magnetic unsteady channel flow of nanofluid with heat transfer
In this study, numerical treatment is performed to study the dynamical analysis of hydro-magnetic nanofluids problem for heat and mass transfer of an unsteady nanofluid flow between parallel plates by exploiting the strength of Adams and explicit Runge-Kutta method. Original PDEs of the model are transformed to equivalent system of ODEs by utilizing the similarity transformations. Numerical and graphical illustrations prove the validity of the proposed methods for number of scenarios of the system by considering different physical quantities such as the squeeze number, Nusselt number, Schmidt number, Hartmann number, therm...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Experimental and quantum chemical studies of functionalized tetrahydropyridines as corrosion inhibitors for mild steel in 1 M hydrochloric acid
Publication date: June 2018Source: Results in Physics, Volume 9Author(s): Jiyaul Haque, Chandrabhan Verma, Vandana Srivastava, M.A. Quraishi, Eno E. EbensoAbstractCorrosion inhibition property of ethyl 1,2,6-triphenyl-4-(phenylamino)-1,2,5,6-tetrahydropyridine-3-carboxylate (THP-1) and ethyl 2,6-bis(4-methoxyphenyl)-1-phenyl-4-(phenylamino)-1,2,5,6-tetrahydropyridine-3-carboxylate (THP-2) on mild steel (MS) in 1 M HCl have been studied using weight loss, electrochemical, surface morphology (SEM, AFM) and quantum chemical (QC) calculations methods. Results showed that both the functionalized tetrahydropyridines act as an ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Role of Mn2+ ions on optical and luminescent properties of CaF2–Y2O3 –ZnO–B2O3–SiO2 glasses
Publication date: Available online 6 June 2018Source: Results in PhysicsAuthor(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 wer...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Synthesis and Study the Structure, Optical, Thermal and Dielectric Properties of Promising Glycine Copper Nitrate (GCN) Single Crystals
Publication date: Available online 7 June 2018Source: Results in PhysicsAuthor(s): Ollaa M.Mailoud, Adly H. Elsayed, A.H. Abo-ELazm, H.A. FetouhAbstractFour novel single crystals of α-glycine and γ-glycine doped by copper nitrate: (Glycine)1-X (Cu(NO3)2. 3H2O)X abbreviated as (GCN1, GCN2, GCN3, GCN4) were prepared from aqueous solution by the slow evaporation method. Four doping concentrations: x = 0.005, 0.01, 0.02 and 0.04 of hydrated copper nitrate were used. The crystals were studied using powder X-ray diffraction (PXRD), Fourier Transform Infrared Spectroscopy (FTIR), and UV-Vis spectroscopy. The PXRD patt...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Inhibition performance of Glycine max, Cuscuta reflexa and Spirogyra extracts for mild steel dissolution in acidic medium: Density functional theory and experimental studies
Publication date: Available online 7 June 2018Source: Results in PhysicsAuthor(s): D.K. Verma, Fahmida Khan, I. Bahadur, Mohammad Salman, M.A. Quraishi, Chandrabhan Verma, Eno E. EbensoAbstractThe effectiveness of three plant extracts namely Glycine max leaves (GMLE), Cuscuta reflexa roxb. (CRRE) and Spirogyra algae (SGAE) has been evaluated as green corrosion inhibitors for mild steel corrosion in acidic solution of 1M HCl using chemical, electrochemical, surface and density functional theory (DFT) methods. The gravimetric and electrochemical results showed that the trend of their effectiveness towards mild steel acidic c...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

SF6 Plasma Treatment for Leakage Current Reduction of AlGaN/GaN Heterojunction Field-Effect Transistors
In this study, we have investigated the effects of SF6 plasma treatment on the isolation leakage current characteristics of AlGaN/GaN heterojunction field-effect transistors (HFETs). The device isolation was performed by Cl2/BCl3-based plasma etching process followed by SF6 plasma treatment for 1 min. It was found that the SF6 plasma post-etching treatment was an effective method to improve the electrical isolation characteristics. X-ray photoelectron spectroscopy analysis was carried out to investigate the chemical bonding states of the etched GaN surfaces. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Anomalous transverse transformation of astigmatic four-petal Gaussian beams in isotropic nonlocal nonlinear media
Publication date: Available online 15 June 2018Source: Results in PhysicsAuthor(s): Zhen-Jun Yang, Hong-Xia Bu, Yong-Bo Wang, Xing-Liang Li, Shu-Min ZhangAbstractIn this paper, the evolution dynamics of astigmatic four-petal Gaussian beams in isotropic nonlocal nonlinear media is investigated. A series of analytical expressions are derived to describe the beam evolution, the beam width, and the critical power. The anomalous transverse transformation is presented, i.e., an astigmatic four-petal Gaussian beam is compressed in one transverse direction and it is broadened in the other transverse direction. These evolution char...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

The propagation of Hermite-Gaussian beam pairs in strong nonlocal planar waveguide
Publication date: Available online 15 June 2018Source: Results in PhysicsAuthor(s): ShiMin Wu, Qing Wang, XingHui Gao, Yong WangAbstractThe propagation of incoherent orthogonal polarized Hermite-Gaussian (HG) beam pairs in nonlocal planar waveguide was investigated. The evolution equations of parameters and the conditions of forming vector solitons were obtained by variational method. Then the analytical results was confirmed by split-step Fourier transform method. The numerical results show that a series of vector solitons, which was consisted of different-order HG beam pairs, can be formed when the total initial power is...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Comment on “Investigation of structural and optical properties of pure and chromium doped TiO2 nanoparticles prepared by solvothermal method” by R.S. Dubey, Shyam Singh and published in Results in Physics 7 (2017) 1283–1288
Publication date: Available online 15 June 2018Source: Results in PhysicsAuthor(s): Paweł E. Tomaszewski (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Search for a new member of parabolic-like spin-gapless semiconductors: The case of diamond-like quaternary compound CuMn2InSe4
Publication date: Available online 18 June 2018Source: Results in PhysicsAuthor(s): Yilin Han, R. Khenata, Tingzhou Li, Liying Wang, Xiaotian WangAbstractSpin-gapless semiconductors (SGSs) can be viewed as a potential upcoming candidate for spintronic applications, which bridge semiconductors and half-metallic materials (HMMs). In general, one of the spin directions is semiconducting while the other has a zero band gap. Until now, the concrete theory of SGS systems has not been developed and proved. There are limited investigations on the design of the theory of SGS systems and the availability of experimental data for the...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Crystal structure changes and weight kinetics of silicon-hexaboride under gamma irradiation dose
Publication date: Available online 21 June 2018Source: Results in PhysicsAuthor(s): M.N. Mirzayev, S.H. Jabarov, E.B. Asgerov, R.N. Mehdiyeva, T.T. Thabethe, S. Biira, N.V. TiepAbstractThe silicide hexaboride (B6Si) was irradiated with 60Co at room temperature to study the structural changes and weight kinetics. The B6Si samples were irradiated using a gamma source with a dose rate (D) of 0.27 Gy/sec. At adsorption dose range of 9.7, 48.5, 97, 145.5 and 194 kGy. The samples were analysed using X-ray diffraction (XRD) and Energy dispersive spectroscopy (EDS) to study the microstructural and composition changes. The XRD resu...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Dynamical analysis and FPGA implementation of a large range chaotic system with coexisting attractors
Publication date: Available online 21 June 2018Source: Results in PhysicsAuthor(s): Yong-ju Xian, Cheng Xia, Tao-tao Guo, Kun-rong Fu, Chang-biao XuAbstractBased on the generalized 3-D Lü chaotic system, this paper presents a new 3-D autonomous continuous chaotic system with a large range parameter b∈[7,500]. The system has coexisting chaotic attractors depending on the distances from unstable equilibrium points to a given initial point. The topological horseshoes and entropy are obtained by the aid of the topological horseshoes theory and numerical computations. The results show that the new system is chaotic. M...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Perturbation theory for open quantum systems at the steady state
Publication date: Available online 22 June 2018Source: Results in PhysicsAuthor(s): Edgar A. Gómez, Jorge David Castaño-Yepes, Saravana Prakash ThirumuruganandhamAbstractWe propose a theoretical method for studying open quantum systems at the steady state within the framework of the perturbation theory. This approach allow us to compute the density operator of the system perturbatively and, in principle, to obtain an expression for its density matrix elements explicitly. To illustrate our methodology, we provide a case study of a nonlinear two-level system coupled to a thermal reservoir and special attention ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Inhibition performance of three Naphthyridine derivatives for mild steel corrosion in 1M HCl: Computation and experimental analyses
Publication date: Available online 28 June 2018Source: Results in PhysicsAuthor(s): Chandrabhan Verma, Ahmad A. Sorour, Eno.E. Ebenso, M.A. QuraishiAbstractThe influence of three naphthyridines (NTDs) on acidic dissolution of mild steel was evaluated using experimental methods. Protection abilities of the NTDs molecules are increases with their concentrations. Maximum inhibition efficiency of 98.69% was observed for NTD-3 molecule at its 4.11 x 10-5 molL-1 concentration. The inhibition efficiencies of NTDs molecules followed the order: NTD-1 (96.1%)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Behavior of surface plasmon polaritons at the interface of metal and a non-integer dimensional (NID) dielectric medium
Publication date: Available online 4 July 2018Source: Results in PhysicsAuthor(s): Asad Aziz, Zahir Muhammad, Aqeel A. Syed, Q.A. NaqviAbstractThe behavior of surface plasmon polaritons (SPPs) at a planar non-integer dimensional dielectric-metal interface has been studied for the first time. The dimension of the interface is shown to have a strong effect on the behavior of SPPs. Dimensions of both the half spaces are different from each other which can be used to distinguish between them besides their different wavenumbers. Lossless dielectric medium has non-integer dimensions while metal has integer dimension. Surface pla...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Second law of thermodynamics is ingrained within quantum mechanics
Publication date: Available online 7 July 2018Source: Results in PhysicsAuthor(s): Tolga Yarman, Alexander Kholmetskii, Ozan Yarman, Metin ArikAbstractWe show that the second law of thermodynamics is rooted in quantum mechanics, inasmuch as allowing the substitution of the Boltzmann constant k and temperature with respectively the Planck constant and quantum numbers. In particular, we will see that the entropy S becomes proportional to the natural logarithm of the average of the squared quantum numbers n¯2, where each quantum number is associated with a quantum state of the constituents of the thermodynamical system u...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

A Solid Polymer Electrolyte for Aluminum Ion Conduction
This study establishes a polymer system and synthetic route towards solid polymer electrolytes for aluminum ion conduction, for the development of all solid-state aluminum ion batteries. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Effects of cobalt content on the decolorization properties of Fe-Si-B amorphous alloys
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Changqin Zhang, Zhengwang Zhu, Haifeng Zhang, Qilei Sun, Kegao LiuAbstractThis research attempts to study the effects of Co addition on the decolorization properties of Fe-Si-B amorphous alloys. It was found that Fe-Co-Si-B glassy ribbons (GRs) with different cobalt contents could all decolorize acid orange II (AO) solution through adsorption or reductive degradation no matter at lower or higher temperatures. When Co content was low (10 at.%), Fe-Co-Si-B GRs showed similar decolorization properties to those of Fe-Si-B GRs. With the increase of ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

On-chip electro-optic multiplexing circuit using serial microring boxcar filters
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): J. Ali, P. Youplao, N. Pornsuwancharoen, M.A. Jalil, K. Chaiwong, M.S. Aziz, I.S. Amiri, M. Bunrungses, G. Singh, P. Yupapin, K.T.V. GrattanAbstractWe propose a new variant of electro-optic multiplexing scheme using the boxcar filter arrangement. The circuits consist of multistage add-drop multiplexers that can offer external input-output connections. Input from a single light source can be fed into the system through the input port or through the free-space from light fidelity (LiFi) node. The light signal is fed into boxcar filters and the ro...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Sintering dilatometry based grain growth assessment
We present here the capability of such a fast approach (Dilatometry based Grain growth Assessment DGA) utilized for the modeling of sintering and grain growth of zirconia. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Tuning the rod diameter of ZnO nanorods on porous silicon by incorporating graphene
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Wen-Chang Huang, Jo Lun Chiu, Xin Dai Lin, Yu Ching Lin, Shin Chieh Tsai, Wei Ming Su, Chen Yuan Weng, Chien Cheng Lu, Chia Feng Lin, Hsiang ChenAbstractIn this research, graphene was incorporated into the ZnO nanorods (NRs) growth in two different ways to enlarge the rod diameter of ZnO NRs on porous silicon (PS) substrates. We etched the P-type Si (1 0 0) wafer to form the PS layer in solution with HF and C2H5OH and H2O2 for appropriate time. Then, ZnO NRs with and without incorporating graphene were grown with solgel/hydrothermal methods...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Early screening of dentin caries using the methods of Micro-Raman and laser-induced fluorescence spectroscopy
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): D.L. Goloshchapov, V.M. Kashkarov, Y.A. Ippolitov, T. Prutskij, P.V. SeredinAbstractThe work presents microspectroscopic studies of the caries development and phase formation in dentin tissues using the methods of laser-induced fluorescence (LIF) and Raman spectroscopy. The results show that the data obtained near the boundary of intact and infected dentin by these two methods under simultaneous scanning from micro-regions confirm and complement each other. The analysis of the LIF spectra proves that the detected bands in Raman spectroscopy can...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Generation of multi-beam reflected from gradient-index metasurfaces
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): T.V. Hoang, J.H. LeeAbstractMany recent metasurfaces, consisting of one or two-dimensional artificial structures with subwavelength unit cells, have been designed to manipulate optical waves by achieving the 2π continuous phase gradients. In this paper, a method to transfer and control multi-beam reflections from a normal incident wave using a gradient-index metasurface is presented. By tuning properly the phase difference over the gradient-index metasurface, multi-beam anomalous reflections can be achieved, where the beam wavefronts are ful...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Experimental study on the interfacial shear stress of RC beams strengthened with prestressed BFRP rod
In this study, the mechanical properties of the adhesive interface at the ends of the BFRP rod which is bonded to the concrete beams are evaluated by experimental studies considering different test methods such as the stretch adhesion test at both ends (double pull-pull test) and prestressed import test (single push-push test). Based on the existing research results, a modified formula is derived to predict the interfacial shear stresses, BFRP stresses and maximum achievable prestress level. The accuracy and validity of the proposed theoretical formula are confirmed by the experimental results. Moreover, an effective metho...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Hydrothermal fabrication and characterization of ZnO/ZnS core-shell structures on white reflective films
In this study, white reflective films integrated with various ZnO/ZnS surface nanostructures were explored. Based on optical microscope (OM), field-emission scanning electron microscope (FESEM) and energy dispersive X-ray spectroscopy (EDS) results, nanostructures integrated with ZnS shell structures improve the material properties of a polyethylene terephthalate (PET) membrane. In addition, the surface contact angle measurements and XRD results show the hydrophilic and crystalline structures of these membranes are enhanced due to the addition of ZnS shell structures and an Au layer. White reflective PET films synthesized ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Photoluminescence, morphological and electrical properties of porous silicon formulated with different HNO3 concentrations
In this study, porous silicon (PS) with observable luminescence was fabricated on p-type Si (1 0 0) substrate by wet chemical etching with the mixture of HF and different HNO3 concentrations in the ratio of 1:100. The porosity of PS shows dependent on HNO3 concentration. SEM images exhibit the average pore size increases with the increasing of HNO3 concentration. The emission of PS was characterized by photoluminescence (PL) spectroscopy. The PS is able to emit orange-red visible PL under UV illumination with the peak falls within the wavelength region of (620–660) nm. Brighter emission is observed on PS ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

MHD fractional Jeffrey’s fluid flow in the presence of thermo diffusion, thermal radiation effects with first order chemical reaction and uniform heat flux
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): M.A. Imran, Fizza Miraj, I. Khan, I. TliliAbstractExact analysis is about the natural convection flow of non-Newtonian Jeffrey fluid with the Caputo-Fabrizio fractional derivative of non-singular kernel has been discussed in this work. The Laplace transform method is used to obtain the solutions of dimensionless temperature, concentration and velocity fields with non-integer order derivative. Moreover, in the mathematical modelling of the problem, the additional effects like Soret effect, MHD, heat sink, radiations, chemical reaction, porous me...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Influence of spheroidal particle shape on particle size characterization by multi-wavelength light extinction method
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Yi Zhou, Jun Chen, Hui-nan Yang, Tan Li, Ming-xu SuAbstractIn order to improve the applicability, spheroidal particles are substituted for the spherical particles in the traditional modeling of multi-wavelength light extinction method. The extinction coefficient and extinction spectrum are calculated at different axial ratios under the configuration of the generalized Lorenz-Mie theory. Combining extinction spectrum with regularization inversion algorithm, the influence of particle shape on particle size characterization by multi-wavelength lig...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Synthesis of polypropylene composites with modified calcium sulfate whisker prepared from shale vanadium neutralization slag
In this study, the solid waste of shale vanadium neutralization slag (NS) was effectively utilized by preparing calcium sulfate whisker (CSW) filler and reinforcing polypropylene (PP) matrix. The stabilization and modification mechanism of stearic acid on CSW were analyzed. The results showed that stearic acid blocked the hydrophilic active sites of CSW by chemical links with the whisker surface to inhibit whisker hydration and organically modify the whisker with an active index of 0.72. NS/PP, modified NS(MNS)/PP and MCSW/PP composites were synthesized via melt extrusion and injection molding. The effects of whiskerizing ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Validation of CAS’s final global ionospheric maps during different geomagnetic activities from 2015 to 2017
We presented an updated status of CAS’s GIM products and evaluated the overall performance of GIMs during the period of 2015–2017 at different levels of geomagnetic activity conditions and in different latitudes, in contrast to the high-quality IGS final total electron content (TEC) maps. The results show that the root-mean-squares (RMS) of CAS’s GIMs performs varies between 1.0 and 2.5 TECu and it is almost at the same level as that of the Center for Orbit Determination in Europe (CODE). The good consistency between the CAS and IGS-final GIMs has been observed in different latitudes, though the compari...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

A novel SOI LDMOS with substrate field plate and variable-k dielectric buried layer
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Qi Li, Yi Wen, Fabi Zhang, Haiou Li, Gongli Xiao, Yonghe Chen, Tao FuAbstractA novel silicon-on-insulator (SOI) lateral double-diffused metal-oxide-semiconductor (LDMOS) structure has been proposed. The new structure features a substrate field plate (SFP) and a variable-k dielectric buried layer (VKBL). The SFP and VKBL improve the breakdown voltage by introducing new electric field peaks in the surface electric field distribution. Moreover, the SFP reduces the specific ON-resistance through an enhanced auxiliary depletion effect on the drift r...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Numerical study on optical properties of non-circular metamaterial optical fiber
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): B. Vasudevan, M. Ayyadurai, R. Maheswar, P. Mahalakshmi, Ayyanar, Iraj S. AmiriAbstractA non-circular core fiber with a metamaterial cladding using gold is proposed. The mode confinement properties of the disclosed fiber are investigated under various metallic (gold) and dielectric (Al2O3) thickness for different wavelengths and different elliptic ratios of 0.8 μm and 0.9 μm. The parameters like birefringence, confinement loss and dispersion are numerically analyzed theoretically using finite element method (FEM). The overall performa...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Effects of removal of different chemical components on moisture sorption property of Populus euramericana Cv. under dynamic hygrothermal conditions
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Tiantian Yang, Haizhen Zhou, Erni Ma, Jiamin WangAbstractEffects of chemical components on wood sorption property under dynamic condition were investigated for the first time. Hemicellulose, lignin and extractive (denoted as DHC, DL and DE, respectively) were removed from Populus euramericana Cv., 20 mm in radial (R) and tangential (T) directions with thickness of 4 mm along the grain, then the wood was subjected to cyclic tests where relative humidity (RH) varied from 45% to 75% sinusoidally at 25 °C. Based on measured data automatic...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Chemical reaction in peristaltic motion of MHD couple stress fluid in channel with Soret and Dufour effects
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Tasawar Hayat, Sabia Asghar, Anum Tanveer, Ahmed AlsaediAbstractThis paper looks at the peristaltic motion of MHD couple stress fluid in an inclined asymmetric channel. Simultaneous effects of heat and mass transfer are considered. Soret and Dufour features lead to the coupled differential systems. Channel walls satisfy the convective conditions of heat and mass transfer. Exact solutions for the stream function and pressure gradient are derived. Temperature and concentration are obtained numerically. Graphical illustrations for axial velocity, ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Estimating and understanding the efficiency of nanoparticles in enhancing the conductivity of carbon nanotube/polymer composites
We present a series of recommendations to improve the conductivity of a composite based on our simulation results. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Construction of lump soliton and mixed lump stripe solutions of (3+1)-dimensional soliton equation
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Jiangen Liu, Yufeng ZhangAbstractIn this letter, we apply two different ansatzs for constructing the lump soliton and mixed lump strip solutions of (3+1)-dimensional soliton equation, which is associating with the Hirota bilinear form. These lump soliton solutions rationally localized in all directions in the space. The solutions of interactions between a lump and a stripe are shown by graphic illustration of some special solutions which would give us a better understanding on the evolution of solutions of waves. (Source: Results in Physics)
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Anti-corrosion properties of the symbiotic effect of Rosmarinus officinalis and trypsin complex on medium carbon steel
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Roland Tolulope Loto, Cleophas Akintoye LotoAbstractThe synergistic reaction of Rosmarinus officinalis and trypsin complex on the susceptibility of medium carbon steel to interfacial deterioration in 2 M H2SO4 and HCl solution was studied using potentiodynamic polarization method, weight loss evaluation, open circuit potential analysis, optical microscopy and ATR-FTIR spectroscopy. Experimental outcome confirmed the effective performance of the admixture with highest inhibition values of 79.72% and 80.85% in H2SO4 with anodic type inhibition,...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Interaction between chemical species and generalized Fourier’s law on 3D flow of Carreau fluid with variable thermal conductivity and heat sink/source: A numerical approach
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): M. Irfan, M. Khan, W.A. KhanAbstractThis paper deals with three-dimensional (3D) flow of a Carreau fluid by utilizing the impact of heterogeneous-homogeneous reactions towards the bidirectional stretched surface. The heat transfer mechanism is carried out in apparition of improved heat conduction relation. This occurrence is documented upon the notion of generalized Fourier’s law that contributes by the thermal relaxation. Additionally, temperature dependent thermal conductivity and heat sink/source are accounted. On utilization of a suit...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Analysis of Carreau fluid in the presence of thermal stratification and magnetic field effect
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): S. Bilal, Shafqatullah, Ali Saleh Alshomrani, M.Y. Malik, Nabeela Kausar, Farzana Khan, Khalil-ur-RehmanAbstractIn current article theoretical analysis is executed to examine flow features of Carreau fluid by conferring scintillating aspects of thermal stratification. Flow field equations are attained by incorporating infinite shear rate viscosity and magnetic field effects. Afterwards, the partial differential obtained from the fundamental laws of continuity, momentum and energy containing stratification aspects are attained. These consequent ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Influence of Cu and Ag doping on structure and optical properties of In2O3 thin film prepared by spray pyrolysis
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Nasser Y. Mostafa, Ali Badawi, Sameh I. AhmedAbstractThin films of In2O3 and In2O3 doped with Ag+ or Cu2+ were assembled by spray pyrolysis from aqueous solution at 450 °C. The microstructure analysis and optical properties were investigated using XRD, SEM, EDX and UV–Vis. spectrophotometer. XRD analysis proved that Ag-doping greatly reduces the crystallites sizes of In2O3 from 96 nm to 59 nm. However, Cu-doping has less pronounced effect on the crystallite sizes than that of Ag doping. The band gap energy of In2O3 decreases wit...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

On-chip supercontinuum generation in nanostructured Ge11.5As24Se64.5 chalcogenide waveguides using Panda-ring resonator
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): S. Suwanarat, S. Chiangga, I.S. Amiri, S.Z. Haider, M.S. Aziz, J. Ali, G. Singh, R. Poznanski, P. Yupapin, K.T.V. GrattanAbstractThe on-chip scale microring circuit is proposed to numerically investigate the supercontinuum (SC) generation of light power. The device is formed by the chalcogenide Panda-ring resonator with the nanoscale planar waveguide using Ge11.5As24Se64.5 chalcogenide glass channel waveguide, air-clad and MgF2 glass for lower cladding. The waveguide is designed to exhibit normal dispersion along with a low-energy pumped at 1.5...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Would an alternative gravity theory developed from an improved gravitational action approach includes negative kinetic energy dynamic degrees of freedom?
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Veysel Binbay, F. Figen BinbayAbstractThe observed unexpected accelerating expansion of the universe, by Riess and his collaborators in 1998, has become one of the most important problems of the contemporary physics. A considerable effort has been spent by theoretical physicists to explain this observation for a while. When one looks at these attempts more closely, two of approaches attract attention: (i) Multi-dimensional alternative gravity models, (ii) Approaches which takes the more general and complex action than it is original Einstein-Hi...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

The analytic solutions of Schrödinger equation with Cubic-Quintic nonlinearities
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Chun-Yan WangAbstractThis paper deals with the nonlinear Schrödinger equation with Cubic-Quintic nonlinearities. After transforming the non-autonomous nonlinear Schrödinger equation into a stationary equation by adopting the BPVK idea, we give the classification of the solutions to the Cubic-Quintic nonlinear Schrödinger equation by utilizing the complete discrimination system for polynomial method. As an auxiliary result, we use the homotopy renormalization method (HTR) to obtain the global solutions to the Ermakov-Pinney equati...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Preparation of a novel Mg–Fe master alloy and its spheroidizing effect on graphite in ductile irons
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Tong Gao, Zengqiang Li, Junhao Fa, Xiangfa LiuAbstractSpheroidizing treatment is of crucial importance for producing ductile irons. A novel Mg–Fe master alloy has been achieved through the recycling procedure of Al–Si–Fe alloys in this paper. The alloy of Mg–50Fe–16Al–8Si with amounts of block–like Al2Fe3Si particles was synthesized by adding Al–14Si–2Fe alloy into Mg melt. It was found that the Mg–Fe master alloy exhibits attractive spheroidizing performance on a ductile iron Q10. Thi...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Analysis of temperature based power spectrum in EDFA and YDFA with different pump power for THz applications
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): P. Jayarajan, P.G. Kuppusamy, T.V.P. Sundararajan, M.R. Thiyagupriyadharsan, Z. AhamedYasar, R. Maheswar, Iraj S. AmiriAbstractThe indispensible output power spectrum for optical amplifier system in the presence of temperature using EDFA and YDFA is numerically investigated. The notion of temperature suggested as −30 °C, 30 °C, 60 °C, 90 °C. Each output spectrum has been analyzed at −30 °C, 30 °C, 60 °C, 90 °C in both EDFA and YDFA systems. The output power at the point of two maxima a...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Analytical solution of convective heat transfer of a quiescent fluid over a nonlinearly stretching surface using Homotopy Analysis Method
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): M.A. Kazemi, S.S. Jafari, S.M. Musavi, M. NejatiAbstractIn this article, an analytical solution of the boundary layer fluid flow and heat transfer of a quiescent viscous fluid over a non-linearly stretching surface is presented. The thermal radiation effects are included in the energy governing equation. Surface velocity and temperature conditions are assumed to be of the power-law form with an exponent of 1/3 for velocity and arbitrary exponent m for surface temperature or heat flux conditions. The system of nonlinear differential equations is...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Oxalic acid assisted synthesis of ZnS nanoparticles and their optical properties
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): S. Sasi Florence, Nurdogan CanAbstractZnS nanoparticles and Oxalic acid (OA) assisted Zinc sulfide nanoparticles were synthesized by an easy and low-cost aqueous method using double distilled water as a solvent. A phase change has been observed while increasing the concentration of OA. Morphological studies by Transmission Electron Microscopy (TEM), Optical studies from Ultra Violet Spectroscopy (UV) and Photoluminescence (PL) and structural studies from X-ray diffraction (XRD) have been done to characterize the samples. UV absorption spectrum ...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Frozen apsidal line orbits around tiaxial Moon with coupling quadrupole nonlinearity
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): F.A. Abd El-Salam, Sultan Z. Alamri, S.E. Abd El-Bar, Aly R. SeadawyAbstractIn this research paper, new families of frozen orbits of a satellite orbiting the oblate as well as triaxial Moon are investigated. The Hamiltonian of the problem is constructed including the zonal harmonic coefficients of the Moon's gravity field up to J4 and its triaxiality term J2,2. Using two successive canonical Lie transforms, the short and long periodic terms are eliminated from the Hamiltonian. The secular terms are retained up to first order plus the coupling q...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

Mechanical properties of pre-strained austenitic stainless steel from the view of energy density
Publication date: September 2018Source: Results in Physics, Volume 10Author(s): Jian Peng, Kaishang Li, Qiao Dai, Jian PengAbstractThe effect of pre-strain on mechanical properties was investigated for 316L austenitic stainless steel over pre-strain value ranging from 0% to 35%. The effect of pre-strain on energy density of tensile curve was focused, and pre-strain enhances elastic energy density while reduces fracture energy density. Moreover, an energy dissipation variable was proposed based on fracture energy density as a damage parameter of pre-strained material. The relationships between energy dissipation variable an...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research

KKL-model of MHD CuO-nanofluid flow over a stagnation point stretching sheet with nonlinear thermal radiation and suction/injection
In this study, we analyzed numerically the effects of magnetic field and thermal radiation on forced-convection flow of CuO-water nanofluid past a stretching sheet with stagnation point in the presence of suction/injection. Considering the effects of Brownian motion, we applied the Koo–Kleinstreuer–Li (KKL) correlation to simulate the effective thermal conductivity and viscosity of the nanofluid. The equations governing the flow transformed to ordinary differential equations and solved numerically using the fourth-order Runge–Kutta integration scheme featuring a shooting technique. The influence of signif...
Source: Results in Physics - July 10, 2018 Category: Physics Source Type: research