This paper presents the response of low-latitude and mid-latitude ionosphere to a severe geomagnetic storm that occurred on 17 March 2015 at 0445 UT, and the subsequent effect of this storm on GPS error in the East-West (E-W) and North-South (N-S) directions. The Vertical Total Electron Content (VTEC) data has been analysed from three dual frequency GPS receivers, which were installed under the framework

A normal way of slow evaporation method had been used to preparing pure ninhydrin (PN) and magnesium doped ninhydrin (M1N) single crystals. The research describes the various characterizations of the developed PN and M1N crystals. Monoclinic crystal structure with non centrosymmetric P21 space group were marked in the developed crystals. Additionally, to find out the various functional groups of the

This paper is about a method developed to normalize the Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS) data counts of each constituent ion in a mass spectra, by dividing each ion count with the total ion count. So by comparing their statistical means, data of different samples of any alloy like brass etc. from different places around the world can be inter-compared using TOF-SIMS data collected

The excitation functions of 70Ge(p,n)70As,72Ge(p,n)72As, 74Ge(p,n)74As and 76Ge(p,n)76As reactions were studied from reaction threshold to 30 MeV by using EMPIRE-3.2 and TALYS-1.9 nuclear reaction model codes. This study is important because some isotopes produced are important for positron emission tomography (PET). Direct, pre-compound and compound nuclear reactions are considered as main nuclear

PN junction is the basic building block for the fabrication of optoelectronic devices. ZnO shows the n-type behaviour. P-type doping with suitable hole concentration and reduced defects is one of the major challenges in the fabrication of ZnO based devices. Nitrogen, Phosphorus, Arsenic and Bismuth are some of the potential p-type dopants, but none of them have desired electrical properties to fabricate

Imperative introduction of biosensor in the field of medicine, defence, food safety, security and environmental contamination detection acquired paramount attraction. Thus the foundation of the fame of biosensors in detecting wide scope of biomolecules in innumerable fields has driven researchers in advancement of biosensor and enhancing more updates in devices. Among all semiconductor-FET based biosensors

Each country has its own system of Quality Infrastructure (QI) developed for the effective operations, management, regulations, control of national trade, international exchanges of goods & collaborations and recognition of their products and services to enable them to enter into the global market. These QI systems consist of national governments, civic, public and private institutions, organizations

Magnesium-Aluminium (Mg-Al) alloys containing zinc or manganese are preferred choice in automobile and aerospace sectors. Aluminium, the major strengthening element in Mg-alloys is always added below its solid solubility limit of 12.5 wt.%. In the current study, Mg-Al binary systems with Al-content just below and above the solubility limit (Al = 10, 15 and 20 wt.%,) were developed and examined for

Thin film deposition using plasma sputter is done by experimental methods, though Numerical simulation and theory are capable of generating realistic and useful results. In present exploration a theoretical model for sputtering with consequence of different plasma parameters with the help of electromagnetic lenses for planar (Tp) and cylindrical (Tc) magnetron sputteringhas been conversed. The plasma

In the high pressure applications, safety and handling of the design parts are crucial and essentially required. If the design parameters are not properly optimized, sometimes it leads to fatal accidents or huge money loss. With the advent of modern computational tools, the simulation based design analysis is now a day’s address above issues amicably to ultimately helping to improve development process

The investigation of the mechanical behaviour of Bamboo fibre (Bambusa Vulgaris) reinforced unsaturated polyester resin has been carried out in this work. The composites have been fabricated manually using the hand lay-up method. The purpose of the work is to develop a suitable alternative as a replacement for synthetic materials in industries. Five different weight fraction of fibre/matrix have been

In this paper, a methodology based on nullors and passive elements to create equivalent circuits for existing building blocks has been presented. This methodology has been used for generating the equivalent nullor circuit for Current Differencing Buffered Amplifier (CDBA) and its implementation through AD844 ICs of Current Feedback Operational Amplifier (CFOA) has been presented. The proposed circuit

Lightweight materials in general and alumunium alloys in particular are increasingly becoming important engineering materials in order to improve the sustainability aspects of engineering products. Amongst the alumunium alloys, AA7075, due to its strength to weight ratio along with other technical benefits has become a prominent material. The literature suggests that AA7075 is structurally good, however

With the advancement of engineering solutions in the medical domain, the patient’s life can become comfortable. This work recognizes the silent speech of three words. The decoding of silent speech can be useful for patients who are in a locked-in syndrome state. Moreover, it is also applicable to entertainment, cognitive biometrics, and brain-computer interfacing. Brain waves of these imagined words

In this manuscript, comprehensive analysis of distinct optical codes belonging to family of algebraically constructed codes has been demonstrated. Many optical codes belonging to algebraically constructed family such as Extended Reed-solomon codes (E-RS), Multi-level prime codes (MPC), Extended-multi level prime codes (E-MPC), and Variable-weight quadratic congruence codes (VWQCC), Bipolar/Unipolar

In modern industries, basalt and glass are the most commonly used fibers for the fabrication of various engineering components. Present work is focused on the fabrication of hybrid fiber reinforced plastic (FRP) composites, comprises of basalt and glass fibers. The aim of the work is to fabricate a composite justifying the current requirement of the era followed by the identification of the capabilities

Force transducers have prominently been utilized in numerous scientific, industrial and metrological applications since decades. They have been developed for the measurement of force in lower as well as the higher capacity to fulfil the industrial and technological requirements. Generally, a force transducer is calibrated as per standard process. For the better perceptive, there is a need of well defined

In this paper author present performance analysis between solar models based on accuracy, temperature, solar irradiance, resistances, output voltage and ideality factor of solar cell. In past literature various model of solar cell are presented, like one diode model and double diode model. This paper describes a comparative analysis between one-diode, two-diode and three-diode models of PV cell. To

Machinability is expressed as the ease with which a material can undergo machining operations with gratifying surface finish and persistent material removal rate. In general, alumiAnium composites are observed to be difficult to machine due to infusion of hard reinforcement particles into metal matrix. In present study, machinability attributes of Al7075-T6/ Eggshell/SiC/Al2O3composites (Al7075-T6

A mathematical model has been formulated to analyze the behaviour of small amplitude linear and nonlinear shallowwater waves in the coastal region. The coupled Boussinesq equations (BEs) are obtained from the Euler's equation in terms of velocities variable as the velocity measured from arbitrary distance from mean water level. BEs improves the dispersion characteristics and is applicable to variable

Gearboxes are an important part of the mechanical drives element that provides the several applications like automotive industry, wind turbine industry and power plant industry, etc. The condition monitoring of the gearbox reduces its operational cost, maintenance cost and avoid hazardous losses. The features selected for the health status of the gearbox has important parameter to calculate classification

Fused deposition modeling (FDM) is a 3D printing technique that prints thermoplastic layer by layer. Various parameters affect the properties of the final printed object. The exact identification of variation in the properties of the printed object is still a very popular issue among the researchers. In the present work, an effort has been made to identify the parametric influence of layer thickness

In this paper a digital controller has been developed based on Field Programmable Gate Arrays (FPGA) to improve the quality of output (o/p) waveforms produced from a direct matrix converter (DMC), for o/p frequencies higher than the input frequency. In order to reduce the harmonics (present in the o/p voltage waveforms), the performance of proposed DMC is analysed by applying an advanced modulation

This paper presents the rectangular aperture coupled dielectric resonator antenna with dual-band circularly polarized response. The antenna geometry have stair case shaped rectangular dielectric resonator in the form of main radiating element. The specific geometry provides increment of aspect ratio of the dielectric resonator. This allows merging of various resonant frequencies having higher order

Soft Robotics is an emerging field due to high degree of freedom, their soft and delicate interaction, almost no vibration during operations etc. are some among many reasons, why scientists and researchers got attracted towards this field. Nitinol is commonly used in soft robotics and easily available Shape Memory Alloy (SMA) actuator. In present investigation, the authors attempted to understand the

Water is one of the most essential and devastating element in the world. The lack of access to water and its abundance can be a serious threat to human life. These two circumstances may create a difficult situation against the sustainability of human life. Inadequate access to water causes drought, affects agriculture and on other side high level water availability in urban areas affects daily life

The proposed work focuses on the use of a hybrid water pumping system powered through the grid as well as photovoltaic cells, which is capable of operating on single-source availability of either solar or grid. This work reduces multiple stage power conversion by using a novel Modified Universal Converter to replace the diode rectifier, inverter for the hybrid water pumping system. The efficacy of

In the present work, we have successfully synthesized Bi2S3, CuS, and its heterojunction Bi2S3/CuS thin film on fluorine doped tin oxide (FTO) coated glass as counter electrodes. These depositions are done by simple, cost effective, and simply executable sequential chemical bath deposition (S-CBD) method. Well optimized preparative parameters led to the formation of good quality thin films of Bi2S3

Crystal of p-hydroazobenezene was grown and the crystal system is confirmed by analysis the XRD data. The material delineated in monclinic system with the space group of Pbca. FTIR and Raman spectrum analysis have been performed to comprehend the molecular interactions and to learn the vibrational nature of the functional groups in the title compound. Optical, and thermal stability analysis were also

We discuss our present understanding of the incomplete fusion (ICF) reaction dynamics, the excitation function of six evaporation residues (ERs) have been measured in 16O + 156Gd reaction at projectile energy range, E/A ~ 4.3-6.3 MeV/Nucleon. Some of the ERs are produced directly & indirectly (i.e. through pre-cursor), the pre-cursor contributions have been separated out from the measured cumulative

Polymer nanocomposite (PNC) films comprised poly(vinyl alcohol) (PVA) and also its blend with poly(vinyl pyrrolidone) (PVP) (i.e., PVA/PVP = 75/25 wt/wt%) as host matrices loaded with different amounts of montmorillonite (MMT) nanoclay up to 10 wt% were prepared by melt compounded method. X-ray diffraction (XRD) patterns of these PNC films were recorded in the appropriate angular range of 2θ values

The accuracy of an electron microscope depends on the magnification and resolution of the microscope. Hence in order to achieve high accuracy measurement results from the electron microscopic examination, a standard specimen is required to calibrate the transmission electron microscope (TEM). In the present work, gold nanoparticles of uniform size with narrow particle size distribution were synthesized

In this work, we have investigated the strain response (angular/spatial) from fiber Bragg grating (FBG) sensor & resistance strain gauge (RSG) sensors bonded to the composite structure due to the projectile low velocity impact (LVI). The number of sensor & its orientating has been optimized based on such experimental data and designed an optimum sensor network for faithful LVI detection. In order to

The main objective of this study was to assess the molecular simulation of the design of carbon dioxide (CO2) and to construct infrared optical filters for the transmission and absorption of the CO2 laser and the emission of gaseous CO2 radiation. Semiconductor compounds used to determine the wavelength of infrared transmission and absorption infrared radiation (IR) to produce an IR filter for laser

The ultrasonic velocity (u), density (ρ) and viscosity (η) of Nicotinic acid in methanol solutions have been investigated at 288, 298 and 308 K. From these experimental measurement, thermo acoustical parameters such as acoustical impedance (Z), adiabatic compressibility (βa), intermolecular free length (Lf), relaxation time (τ), internal pressure (πin) and free volume (Vf) have been computed. The variation

Molybdenum trioxide (MoO3) thin films are made by Pulsed Laser Deposition (PLD) technique onto cleaned glass substrates at an oxygen partial pressure (PO2) of 100 m Torr by varying substrate temperature (Ts). The present study describes the variation in the growth of films and photochromic properties with respect to substrate temperature. XRD studies confirm unique α - orthorhombic layered structure

An experiment has been conducted to evaluate the lifetime, reliability and operational performance of elementary semiconductor devices in the neutron radiation environment which supports to reduce the fatal in measurements and plan the preventive actions in nuclear facilities. It will also support the enhancement of electronics for nuclear facilities. The elementary semiconductor devices used in the

In this paper, we have reported the computational studies of structural, spectroscopicand electronic behavior of a chalcone derivative:3-(2,3- dichlorophenyl)-1-(pyridine-2- yl)prop-2-en-1-one (DCPP) nonlinear optical crystal. The geometry of DCPP molecule have been optimized using density functional theory (DFT) at B3LYP level having extended basis set 6-311++G(d,p) with the help of Gaussian 09W program

Nowadays, world energy infrastructure is being stretched due to imbalance between energy production and energy consumption; renewable & sustainable energy storage and conversion techniques could resolve this issue. Thus global energy requirements, limited availability of fossil fuels and environmental crisis drive the expansion of alternative or non- conventional energy sources with high energy and

We report the biogenic synthesis of ZnO nanoparticles using Mangifera indica aqueous extract and density functional theory/time-dependent density functional theory (DFT/TD-DFT) calculations on Zn12O12 nanocluster compared with various basis sets (B3LYP/6-31G, B3LYP/LANL2DZ, and B97D). The genesis of ZnO nanoparticles was achieved from the reduction of capping agent ZnSo4. The properties of ZnO nanoparticles

Elimination of huge waste produced by mankind has become a sensitive issue in the present scenario. To preserve our earth and to make it pollution free, it becomes necessary to reduce the garbage causing pollution. Plant fibers are the best and abundant sources of natural reinforcement readily available. These fibers can be used for fabrication of composites which can reduce the problem of pollution

A study of Non-radiative energy transfer in UO2-Ho system in zinc phosphate glass has been done by observing the steady state emission of UO2++ with varying concentration of Ho3+ in zinc phosphate glass at room temperature. It has been observed that UO2++ ion emission intensity decreases with increasing Ho3+ concentration resulting in a non-radiative energy transfer from UO2++ to Ho3+. The energy transfer

The key purpose of this paper is to study the convection of a transient state in the flow of MHD Casson fluid over an inclined layer. In addition, the influence of the magnetic field, Dufour effects and heat suction / injection through porous medium are considered in the present analysis. By the Laplace transformation process, the analytical solutions of governing equations are established. By using

SiO2 nanoparticles was synthesized by sol-gel method and polymer nanocomposites by solvo-casting method. XRD and SEM analysis have revealed the size, morphological structure and formation of SiO2/PVA-PEG polymer nanocomposites. The presence of hydrogen bond between SiO2 and PVA-PEG was proved with the help of Fourier Transform Infra Red Spectroscopy (FTIR). Further UV-Vis studies were used to find

Electrodes fabricated using graphene are quite promising for electric double layer capacitors. However graphene has the limitations of low ‘Quantum Capacitance (QC)’ near fermi level due to the presence of Dirac point that can be modified by doping graphenewith suitable dopant. The density functional theory DFT calculations are performed for doped graphene using Boron, Sulphur and phosphorus as dopants

In this study, we examine the combined effects of buoyancy forces, pressure gradient, thermophoresis, Brownian motion, variable viscosity of nanofluid flow in a microchannel with suction and injection in the presence of uniform magnetic field imposed in cross-wise direction. It is assumed that the dynamic viscosity of the nanofluid is related with temperature exponentially and that the vertical parallel-plates

The current investigation focuses on unsteady, natural convection viscous incompressible, electrically conducting liquid motion over a vertical plane sheet flooded with permeable media with heat source and chemical reaction. A uniform magnetic field is applied in the transverse direction; the liquid augment in the water way determined by identical pressure, the transport of heat is inclined by radiation

Layer structured Li1.10(Ni0.32X0.01Co0.33Mn0.33)O2 (X = Dy/Gd/Ho) compounds were synthesized via the microwave assisted solvothermal route. The impacts of doping on the electrical and electrochemical properties of Li1.10 (Ni0.32X0.01Co0.33Mn0.33)O2 compounds were investigated. Rietveld refined XRD pattern showed Li1.10 (Ni0.32X0.01Co0.33Mn0.33)O2 compounds with layered hexagonal structure. SEM images

This paper proposes the use of an algorithm based on the mercury intrusion porosimetry (MIP) method to obtain the water retention characteristic curve (pF curve) of a soil under different treatments. 3D X-ray micro-tomographic images were used to quantify pore size distribution, which was employed for the evaluation of the water retention in different matric potentials. The results showed very good

In this article, synthesis and quantum chemical properties of novel (S)-7-(4-chlorophenyl)-6,7-dihydrothiazolo[4,5-d]pyrimidine-2,5(3H,4H)-dione (CPTHZ) are described. The aim of this synthesis was to obtain biologically active thiazolidinone scaffolds and correlates its quantum chemical properties with its experimental results. The structure of the compound was characterized by using different spectral

Zinc selenide (ZnSe) thin films were grown on silicon (Si) wafer by thermal evaporation and the hetero-structure was subjected to annealing at various temperatures. X-ray diffractogram recorded for various samples were analysed to extract the structural information including crystallite size, strain and dislocation density. ZnSe films exhibited cubic structure with (111) orientation and the crystallite

By solid state reaction method, ceramic pellets of Na0.695K0.305NbO3 have been prepared. X-ray- diffraction, Piezo properties, scanning electron microscope, and temperature dependence of dielectric constant and loss tangent of the prepared samples have been studied. It has been observed that, at the transition temperature, dielectric constant peak shifts to lower temperature, and the dielectric constant

The ab initio calculations based on the density functional theory (DFT) using the self-consistent full potential linearized augmented plane wave (FPLAPW) method were performed to explore the electronic structures, magnetic and thermoelectric properties of quaternary alloys RbCaCZ (Z = P, As, Sb) with quaternary Heusler structure. Results showed that FM-Y3 is the most favorable atomic arrangement. All

Cryogenic cooling with liquid nitrogen has a wide field of scientific and engineering applications. The aim of the presented research work is to analyze the impact on cutting force and temperature during the LN2 single supply at (i) rake face and double supply (ii) rake and flank face of TiN coated carbide cutting tool during turning of AISI D3 steel. Taguchi based S/N ratio was used for Design of

Titanium dioxide nanoparticles (TiO2-NPs) are agglomerated by inclusion of CNTs during the nucleation and growth process using the hydrothermal method at 160 ⁰C. The content of C-atoms was determined from EDAX-spectra and line scan. The XRD peak of TiO2 indicated the rutile phase R(210), while CNT- TiO2 showed the anatase phase A(004). Williamson-Hall (W-H) models showed the linear fitted negative

Good rating services in terms of high speed data rate, good quality video signal and high speed telecommunication is the prime requirement for the current customers which have resolved in this research work for the first time best of our knowledge for 200 customers with the power amplification from EDFA optical amplifiers. Further, transmission of three play services signals have carried out from different

In present communication, an attempt is made to prepare and study structural, optical, and electrical properties of biocompatible polyvinylchloride (PVC)-polyvinylpyrrolidone (PVP) blend films taken in ratio of 1:1 doped with conducting polymer Polypyrrole (PPy).The XRD spectra revealed amorphous nature of all the films under investigation. The Fourier transform infra-red spectroscopy (FTIR) study

The purpose of this work is to develop a theoretical model to calculate the bulk moduli of FCC nanoparticles that account for their size and structure. The bulk modulus for spherical nanoparticles has been derived from the cohesive energy which had been calculated by summing up the potential energy function of every pair of atoms of these metallic nanoparticles. The ab initio pair potential energy

MnSbInS4 multi-component semiconductor thin films are prepared by chemical spray pyrolysis on glass substrates at various substrate temperatures ranging from 250-400 °C with a constant spray time (5mins). The structural, morphological, optical and electrical properties of the thin films are investigated through different techniques such as X-ray diffraction (XRD), electron diffraction spectroscopy

Remarkable enhancement in figure-of-merit (ZT) value of p-type Tin Telluride (SnTe) thin films is reported in the present investigations. Under high vacuum conditions, all thin films deposited on the glass substrate by using thermal evaporation technique. Thickness of the thin films were kept 55 and 33 nm. Morphological features and the elemental composition of the thin film were investigated using