bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Physical and Optical Properties of Glasses from Local Sand in Nakhon Pathom Province
Authors: Rachniyom W , Sakunsuk T , Ruengsri S , Kaewkhao J 
Published: September 2019

Abstract
In this work, local sand in Mueang and Kamphaeng Saen district of Nakhon Pathom Province were used as raw material in glasses. The glass samples were prepared in formula 45SiO2 : 20B2O3 : 10BaO : 25Na2O by melt and quenching technique. Four difference raw SiO2 of glass samples were prepared by local general (GM) and fine sand of Mueang size 150 μm (GM150) and local general (GK) and fine sand of Kamphaeng Saen size 150 μm (GK150). These samples were investigated physical and optical properties to compare with glass from high silica commercial grade (GS). The density and refractive index values of glass from local sand have close to reference glass around 2.6700-2.6896 g/cm3 and 1.5376-1.5391, respectively. The Vicker’s hardness of glasses were in good acceptable values around 393.2-465 HV. While, the optical properties of glasses from local sand were differed to reference glass. The absorption spectra of glasses from local sand were occurred the contamination of Fe2+ and Fe3+ ions in wavelength of 440 nm and 1,050 nm. This contamination of iron oxide was obtained from local sand. However, this experiment demonstrates that possibility of utilizing local sand in glass production.
Effect of substrate feature on surface morphologies and properties of ITO films deposited by RF magnetron sputtering
Authors: Tongdee Prasit , Boonyopakorn Narongchai 
Published: September 2019

Abstract
ITO films were deposited on c-Si wafer, and two glass substrates by RF magnetron sputtering at constant RF power, and substrate temperature of 60 W, and 450°C respectively. The surface morphologies of the substrates were analyzed before and after film depositions by AFM measurements. The crystalline structural, electrical, and optical properties were analyzed after film depositions by XRD, Hall measurement, and UV-Vis spectrophotometer respectively. It was found that, with lower surface roughness, the deposited ITO films showed significant larger domain-grain structure, lower surface roughness, and higher (400) preferred orientation than that deposited on the substrate with higher surface roughness, with the transmittances of higher than 80% for both substrates. From the structural, and electrical properties, it implied that, with higher surface roughness, the carrier concentrations was contributed mainly from the Sn substitution, whereas it was dominant from the oxygen deficiency for the lower surface roughness substrate. The deposited ITO film with lower resistivity and high transmittance can be achieved for the films deposited on lower substrate surface roughness.
Magnetic Behaviors of Ca2FeMoO6 without Double Mixture Gas Protection under Heat Treatment
Authors: Sareein T , Albutt N 
Published: September 2019

Abstract
The Ca2FeMoO6 ceramics powder were prepared by solid state reaction involving compression and high temperature calcine. The magnetic properties arise from the environments of the Fe 3+ and Mo 5+ oxidation states which can be modified, with heat treatment at 800 °C and different dwell times exhibited the largest hysteresis loop at 50 K. In addition, the CFMO powder at the high temperature of 800 °C for 10 hours exhibited a high Ms~1.494 emu/g at 50 K and ~0.601emu/g at room temperature. Using the Curie-Weiss law fitting to determine μeff~28.121μB high spin of Fe and Mo, and a negative θ indicates antiferromagnetic characteristics of the CFMO sample.
Modelling of titanium oxynitride films for decorative coating by using response surface methodology
Authors: Sattha Chanawee , Sakdanuphab Rachsak , Kedkaew Cittra , Sakulkalavek Aparporn 
Published: September 2019

Abstract
In this work, titanium oxynitride films were deposited on SS316L and Si-wafer substrates using reactive DC magnetron sputtering. An experimental design and statistical analysis were applied for the thin film coating. The experiment software (Design-Expert Software) was used to design the deposition parameters, including the plasma current density (10-25 mA/cm2) and N2 gas flow rate (20–60 sccm) by maintaining O2 gas flow rate. Response surface methodology based on a central composite design was used to empirically model the influence of the plasma current density (I) and N2 (N) flow rate on the CIE colour system of titanium oxynitride thin films. The model fitting equations for two colour channels (a* and b*) were obtained and represented by a* = –26.65 + 0.67N + 2.92I + 0.02NI – 0.01N
2 – 0.12I
2 and b* = 4.83 – 1.05N + 1.72I – 0.02NI + 0.02N
2 – 0.03I
2. In addition, the effects of current density and N2 flow rate on the chemical composition of TiON films were investigated by X-ray photoelectron spectroscopy (XPS). The titanium 2p (Ti2p) spectra indicated that the TiON and TiO2 structures depended on the deposition parameters. Additionally, the increase in N2 flow rate and current density affected the increase of the TiN structure. Cytotoxicity was performed on the Ti sheet and the TiON film on SS316L by assessing the cellular response to L929 fibroblast cells. The result shows that the TiON film on SS316L exhibits good biocompatibility with the L929 fibroblast cells.
Effect of milling techniques on the particle characteristics of conductive Pr-substituted YBa2Cu3O7-y compound
Authors: Prayoonphokkharat P. , Wannasut P. , Sriprachuabwong C. , Tuantranont A. , Watcharapasorn A. 
Published: September 2019

Abstract
In this work, the effects of milling techniques on Pr-substituted YBa2Cu3O7-y (YPrBCO) particles were investigated. The Pr-substituted YBa2Cu3O7-y powders were prepared by solid-state reaction method. The stoichiometric mixtures of Y2O3, BaCO3, CuO and Pr6O11 starting powders were calcined at 880 °C for 12 h in air to form respective compounds. The resulting products were milled for 4 – 12 h using the conventional ball milling technique and for 4 h using the high-energy planetary ball milling method. The phase and structure identification of powders were characterized by X-ray diffraction (XRD) technique. The microstructure and chemical composition were studied using scanning electron microscopy (SEM) with energy dispersive X-ray analysis (EDS). The XRD patterns indicated that the pure phase of YPrBCO powders was obtained. For this material system, the conventional ball mill technique gave particles having a relatively wide particle size distribution with a maximum size of ~2 μm regardless of milling time. In contrast, the narrower particle size distribution was observed for the YPrBCO powder obtained from the high-speed ball milling method and the largest particle size did not exceed 100 nm. These results showed that the powder produced by the high-speed ball milling technique could have a potential use in colloidal solution for printed thermoelectric film.
Structural and Optical Properties of Si Nanostructures
Authors: Kumar Ashish , Sharma Ashok , Agarwal Ajay 
Published: September 2019

Abstract
Silicon nanostructures were realized using metal assisted chemical etching of silicon wafer (100) for two different etching times: 5 minute and 10 minute. Structural and optical properties of silicon nanostructures were investigated using field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), and photoluminescence (PL). XRD analysis probes the changes in crystallinity during etching and reveals reflection plane (220) of obtained silicon nanostructures. UV and visible spectra of photoluminescence from Si nanostructures suggest the optically active nature of Si at nanoscale and confinement of carrier. These results show that the structural and optical properties of Si nanostructures strongly depend on etching time of silicon wafer.
Structural and Optical Characteristics of Nanoscale Semiconductor Lasers for Telecommunication and Biomedical Applications: A Review
Authors: Vijay Jayprakash , Singh Kulwant , Soni Dimple , Rathi Amit 
Published: September 2019

Abstract
This paper presents the structural and optical characteristics of nanoscale semiconductor lasers for telecommunication and biomedical applications. Improved fabrication techniques, new materials and nano-scale heterostructures have led to improvement in the device performance. The material selection and their bandgap have an important role in the heterostructure to generate a lasing wavelength for particular applications. The bandgap modification can be done by the use of alloy semiconductor, quantum well structure, and strain layer epitaxy without changing the material itself. Semiconductor multilayers on the substrate are generally grown by using the metal-organic vapor phase epitaxy (MOVPE) and molecular beam epitaxy (MBE) process. Many researchers have provided different designs of heterostructures for the lasers. Generally, lasers are manufactured by using different semiconductor layers grown on GaAs, InP or GaSb substrate at the nanoscale. But controlling the thickness of the layer grown on the substrate at the nanoscale is the major problem in the fabrication. In a study, it has been found that for the proper functioning of semiconductor lasers it is beneficial to have light conduction and valence band masses. By using band structure engineering theory of quantum confinement and incorporation of strain on the active layer, this problem can be resolved. Red lasers are currently used in biomedical applications for treatment of superficial skin diseases like psoriasis, vitiligo etc. The manufacturing of red laser was earlier done by using nitrides material but they are harmful to skin and are expensive as well. An alternative for designing of red laser is manufacturing red lasers by using phosphides. The red laser is manufactured by using GaInP and AlGaInP ternary and quaternary compounds are widely used in the biomedical industry currently. This paper is the outcomes of the papers presented by many researchers in the field of optoelectronics.
Simulating 1.55 µm Optical Gain in Type-II InAlAs/InGaAs/GaAsSb Nanoscale Heterostructure
Authors: Khan A. M. , Bhardwaj Garima , Abu-Samak M. , Saeed S. H. , Alvi P. A. 
Published: September 2019

Abstract
This particular work has been designed to give an idea regarding W shaped nano based type II heterostructure and for the above particular design simulation concept have also been carried out in a theoretical way to obtain optical gain for the given material system InAlAs/InGaAs/GaAsSb, which is used to be operated at 1.55 µm near IR. The designed heterostructure contains two quantum wells (width ∼ 2 nm) of InGaAs material. To solve the carrier’s localities within the heterostructure, k.p method has been adopted. As far as calculations are concerned we have opted a defined phenomena to measure the significant characteristics with respective to optical nature like dispersion, gain and many other properties have also been found in order to get good results that would be helpful to emit radiations of the order of the working wavelength and to employ great communication systems applications that can be optical fiber based
Effect of Fe Doping on Magnetic Behavior of SnO2 Nanoparticles for Spintronics Applications
Authors: Sharma Mayuri , Doila S. N. , Kumar Shalendra , Alvi P. A. 
Published: September 2019

Abstract
Doping of magnetic ion (Transition metal) in oxide based semiconducting material at nanoscale level serves a variety of spintronics based applications. In order to understand the influence of doping concentration of Fe ions on the magnetic behavior of semiconducting oxides, we have synthesized Fe doped tin oxide nanoparticles with 1 and 2% doping concentration via chemical co-precipitation method and then magnetic measurements have been taken through Superconducting quantum interference device (SQUID) at 5K and 300K temperatures for both the samples. Various magnetic quantities such as coercivity (Hc), saturation magnetization (Ms), remanent magnetization (Mr) have been extracted from the obtained hysteresis loops and found reduction in their values with increasing doping concentration which might corresponds to the tuning of oxygen defects created due to the substitution of dopant ions in the host lattice. In this way, our study can contribute to fulfill the necessity of ferromagnetism based applications such as data storage devices, gas sensors, communication, quantum computation etc.
Novel Power Coefficient for extracting the maximum power in Wind power based Doubly fed Induction generator (DFIG) using vector control
Authors: Singh Arunesh kumar , Saxena Abhinav , Prashant  , MdWaris  , Singh Rana Arun 
Published: September 2019

Abstract
This Paper shows behaviour of the Doubly fed Induction generator(DFIG) for extracting the maximum power using vector controlled mechanism. This paper present the controlling of rotor side converter(RSC) and grid side converter(GSC) through conventional method of gate triggering by using d-q theory The paper includes the simulation model of DFIG and further the maximum power extraction from wind is estimated by using power coefficient which is completely dependent on pitch angle, tip to speed ratio(TSR). The novelty in power coefficient has design to harness the maximum power. Firstly the mathematical model of DFIG is developed with incorporated wind turbine as mechanical input and then vector controlled method is used. DFIG is broadly used in wind power applications which are more robust, reliable and very efficient system. The complete system is implemented using MATLAB software tool.
Response of monopolar HVDC system in presence of single double-tuned dc filter
Authors: Deb Soma , Verma H K 
Published: September 2019

Abstract
Study of the response of an HVDC system to various conditions, types and locations of fault on the system is basic to developing suitable protection techniques and algorithms. This paper presents a study of the behaviour of monopolar HVDC system in the presence of a single double-tuned dc filter. CIGRE Benchmark model for monopolar HVDC system has been simulated on PSCAD/EMTDC for the study. Five different fault locations, viz. three dc line faults (two faults near the line ends and the third fault at the middle point of the line) and two ac side faults (one near the rectifier and the other near the inverter), and five different values of fault resistance (ranging from 0 to 2000 ohms) have been considered. It has been observed that incremental current and incremental power in the HVDC line can discriminate only mid-line dc faults from ac fault. Also, incremental current can discriminate between rectifier-side ac fault and inverter-side ac fault for all values of fault resistance, whereas incremental power can do so only for lower values of fault resistance (0 ohm and 10 ohms). Transient energy can discriminate dc line faults at all locations from ac faults with all values of fault resistance. However, transient energy can discriminate rectifier-side ac fault from inverter-side ac fault only for low values of fault resistance (0 ohm and 10 ohms) and not for high values. This study can be very effectively used in developing a protection algorithm/technique. The study can be further extended to analyze the performance of HVDC system in the presence of any type of the dc filter and for any length of the line.
Experimental Profiling of Temperature and Luminosity inside Greenhouse using Wireless Sensor Network
Authors: Lata Suman , Verma H. K. 
Published: September 2019

Abstract
Monitoring and control of climatic variables inside a greenhouse (GH) play crucial role in quality production of crops in the green-house (GH). Measurement and monitoring of major GH variables, such as temperature, humidity, soil moisture, light intensity and CO2 in atmosphere, has been generally carried out using a central data acquisition system to which all sensors are individually wired. This technique involves huge cabling and lacks flexibility of adding sensors in future. This paper presents a detailed methodology and results of experimental measurement and profiling (both temporal and spatial) of temperature and luminosity inside a laboratory model of GH using a wireless sensor network (WSN). For the experimental work, the GH was divided into two rows, row 1 and row 2, with three zones of equal dimensions in each row. At the centre of each zone one wireless sensor node was placed for measurement and acquisition of temperature and luminosity in that zone. A WSN was created with these six wireless sensor (WS) nodes (or motes) and one network coordinator (NC). Profiling of temperature and luminosity was carried out under uncontrolled as well as controlled environmental conditions. Two controlled conditions were created. In the first case only temperature was controlled by placing a heater at the centre of GH. The second case involves simultaneous control of temperature and luminosity, for which an incandescent lamp was placed in each zone of row 1 while all the zones of row 2 were covered with a tinted plastic sheet. Data was gathered from all the six WS nodes in each controlled case as well as in uncontrolled environment. Surface profiles of both temperature and luminosity were drawn in Lab VIEW on the basis of collaborative processing of the data. The experimental results so obtained are correlated with the expected theoretical profiles. The use of WSN and Lab VIEW for collecting and processing the data, respectively, provides remarkable flexibility in terms of addition and deletion of WS nodes. Moreover, no wiring is needed for power or signals.
Single Stage Isolated Zeta Converter (SS-IZC) Circuit with Improved Power Factor for LED’s Application
Authors: Narayan Deo Rajesh , Shrivastava A. , Chatterjee Kalyan 
Published: September 2019

Abstract
Light emitting diode specifically White LED has gain a lot of attention from both academics and industrial sector due to its high efficiency, environmental friendly, and long lifecycle. This is a feasible alternative for conventional bulbs and tubes in domestic, industrial and commercial lighting. However, implementation of this new source requires various parametric regulation. This proposed single stage isolated zeta converter (SS-IZC), with power factor correction maintains constant output for the load of 36 Watts LED, and follow the IEC61000-3-2 standard. The proposed SS-IZC is operating in DCM and controlled with PWM (Pulse width modulation), for power factor improvement and low THD, and obtain more than 0.9 power factor and THD less than ten percentages.
Speed Control of DC Motor Using Chopper Based on Fuzzy Logic
Authors: Singh Arunesh kumar , Saxena Abhinav , Poon Terang Parveen , Tulsyan Palak , Waris M 
Published: September 2019

Abstract
This paper present the speed control of DC Motor based on boost converter under the controlling of fuzzy logic. The DC motor has armature and field winding in which armature winding is controlled by using boost converter which is triggered by fuzzy logic controller which consist of 7x7 rule and the input are change in error and rate of change of error and output is firing angle. The fuzzy logic controller gives smooth, reliable, efficient speed controlling of DC motor. Further the compative analysis between fuzzy logy and PID controller is assessed. The complete system is designed with SIMULINK/MATLAB for perfect analysis between two methods mentioned.
Comparative Study of Structural and Sheetmetal Combination Bracket on Elevator Rail System
Authors: Dubey Sumit V. , Rane Santosh B. 
Published: September 2019

Abstract
Context: - Combination brackets are applied for fixing car and counterweight guide rails on the hoistway wall to deliver smooth and safe travel for side counterweight position.
Purpose: - The main intent of this work study is to compare the deflection and stresses value of the structural and sheet metal Combination bracket arises due to effect of forces imposed on the guide rail by the Car guide shoe.
Methodology: - Finite element method was performed for Structural and Sheet metal combination bracket to evaluate stress and deflection using SolidWorks Simulation software. Analytical calculation has been performed to calculate the forces acting on rail considering the case of safety gear operation as per EN 81-1
Research findings: - From this analysis, it has been found that structural combination brackets are stiffer compare to those made up of sheet metal.
Limitations: - Stress and deflection values shall be varied for different car cabin sizes. A case study of Car Size 1100x2000 mm for 13 passenger capacity rated load has been considered.
Originality/value: - This analysis results provides the possibility of selecting most reliable rail bracket for guide rail fixation.
Development and performance analysis of conformal UWB wearable antenna under various bending radii
Authors: Prasad Gupta Narbada , Kumar Mithilesh , Maheshwari Ranjan 
Published: September 2019

Abstract
Antennas for off-body wearable applications needs to be flexible and its electrical characteristics should be stable in different body postures, different bending or stretching environments. Therefore, the designed antenna should be such that, even if the antenna is bent frequently, it should operate properly. In this paper, a conformal UWB antenna is reported which has been optimized to be conformal to any body shape and size. The proposed antenna has been designed on RT Duroid substrate with dielectric constant of 2.2 and loss tangent 0.0009. The thickness of the material is 0.127 mm. Due to low thickness; it can easily be bent and mounted on curved surfaces. The size of the antenna is 35 × 31 mm2. To accomplish the design process, two different bending radii have been considered to bend the proposed antenna. The two bending radii of 25 mm and 50 mm have been chosen; one corresponding to the arm of a healthy child of around 5 years age and another corresponding to a healthy person of age about 35 years with medium built. The simulated radiation efficiency and total antenna efficiency are more than 60% for the bending at 25 mm and 50 mm radii in the UWB frequency range from 3.1 GHz to 10.6 GHz. The gain of the proposed antenna for both the bending radii is changing from 1.4 dB to 5.3 dB. The return loss of the proposed antenna is obtained for 25 mm and 50 mm bending radii of curvatures and it is below 10 dB in UWB range. A prototype of proposed antenna has been fabricated and tested on Rohde & Schwarz 40 GHz VNA. Measured results are in close agreement with simulation results.
Optimization of Organic Waste Collection for Generation of Bio Gas using IoT Techniques
Authors: Manglorkar S S , Sharma A O , Verma D S , Rane S B 
Published: September 2019

Abstract
India is facing some major challenges in waste collection, segregation, transportation, treatment and disposal. Hence, there is a need to spread awareness about waste disposal and define better waste management techniques in India. The purpose of this paper is to utilize Internet of Things for waste management and optimized collection of wet (biodegradable) waste to produce bio-gas. It focuses on improving the current waste management system by using ultra-sonic sensors, Arduino-UNO and EC-GSM. Collection and segregation of waste in an optimized way is necessary because wet waste can be useful in producing bio-gas which in turn can be used to produce clean electricity and natural gas. Lastly, the paper also gives emphasis on cost analysis of this method to calculate revenue generation.