bluuebunny/crossref_metadata_2025_split huggingface dataset:
News Network Information System On Jepara Hari Ini (Jhi) News Portal Based On Contributor Freelance
Authors: Arifin M , Darmanto E , Arifin M 
Published: January 2020

Abstract
Jepara Hari Ini (JHI) is the center of updated information and news facilities. Info on Jepara politics, sports, education, and tourism that focuses on providing information or news well. However, within the limitations of journalists or reporters sometimes making a news information does not work optimally. With this obstacle, an online news agency requires the input of information or news from outside parties, namely the community. The purpose of this study was to design a news network information system on JHI. The results showed that the news network information system in JHI could help the community in giving or seeing the latest information, database, and interface of the resulting application.
Effect of punch velocity on punch force and burnish height of punched holes in punching procces of pure titanium sheet
Authors: Kurniawan Yani , Mahardika Muslim , Suyitno  
Published: January 2020

Abstract
Punch velocity is one of the important parameters in the punching process. The choice of punch velocity is difficult because it has a different influence on each material. Therefore, it is important to know the effect of punch velocity on the material to be worked. The purpose of this study was to investigate the punch velocity effect on punch force and burnish height of the punched holes in the punching process of pure titanium sheets. The punching process used was a pneumatic punch machine with punch velocity of 10, 35, 70 mm/s. The result shows that when punch velocity of 10, 35, 70 mm/s, punch force that occurred each by 357, 408 and 434 N. Burnish height resulted by 0.194, 0.200 and 0.241 respectively. Its indicates that punch velocity affected on punch force and burnish height of punch holes. When punch velocity increased, punch force and burnish height of the punched holes increased.
Conducting heat treatment of the TiNiTa alloy and studying the mechanical properties depending on the heat treatment
Authors: Sergienko K V , Morozova Ya A , Tsareva A M 
Published: January 2020

Abstract
In this work, a TiNiTa wire with a tantalum content of 10% (weight) was obtained, heat treatment of wire samples was carried out at various temperatures in a vacuum furnace, mechanical tests were carried out after heat treatment to determine the optimal heat treatment mode after the final drawing step to remove hardening and obtain the best complex mechanical properties for the use of wire in the manufacture of medical stents.
Creep of high density polyethylene filled with multiwall carbon nanotubes
Authors: Starkova O , Sevcenko J , Stankevich S , Bulderberga O , Aniskevich A 
Published: January 2020

Abstract
The creep-recovery behaviour of two types of high density polyethylene (HDPE) filled with multiwall carbon nanotubes (MWCNT) is investigated. Nanocomposites with various contents of MWCNT were produced by using a commercially available masterbatch aimed to transfer the gained knowledge to an assessment of properties of industrial-scale products. Nanocomposites are characterized by the improved creep resistance compared to the neat polymers. Incorporation of 10 wt.% of MWCNT into the polymers resulted in a decrease of creep and residual strains for more than 3 and 5 times, respectively. The reinforcing effect of the nanofiller appeared also in a great increase of the elastic modulus (up to 100%) and ultimate strength (up to 60%) as well as a decrease of the coefficient of linear thermal expansion (down to 17%) of HDPE. Carbon nanotubes, being also good heat conductors, greatly contributed to the improvement of polyethylene’s thermal conductivity (up to 60%). Electrical percolation is determined below 2 wt.% of MWCNT. The electrical resistance changes monitored during creep-recovery tests are well correlated with the overall strain changes and residual strains in nanocomposites, that approve their in situ strain sensing capability during inelastic and long-term deformation.
Imprints method for determining the ratio of macro- and microhardness when tested for Vickers hardness
Authors: Adaskin A M , Yu Sapronov I 
Published: January 2020

Abstract
The method has been developed for calculating microhardness values under different loads, with known macro-hardness as well as with macro-hardness and microhardness with a single microhardness value, based on comparing the size of non-recovered and recovered imprints – imprints method (IM). The method correctness test for different materials in a wide range of hardness values –80 … 1500 HV, at different indentation loads, was performed. High accuracy of the developed method is shown.
Study of the contact problem of Bernoulli-Euler nano beams using gradient elasticity theory.
Authors: Apryskin V A , Zhigalov M V 
Published: January 2020

Abstract
A mathematical model of the package for two nano Bernoulli-Euler beams connected through boundary conditions is constructed. Used gradient theory of deformations and the theory of the account of contact interaction of B. Ya. Kantor. The influence of the length dimension parameters on the modes of beam vibrations is studied.
Structural types of graphyne layers formed on the basis of 4-6-12 graphene
Authors: Mavrinskii V V , Belenkov E A 
Published: January 2020

Abstract
The structure of seven new polymorphic varieties of graphyne layers has been calculated using the density functional theory at the generalized gradient approximation. The model of graphyne layers is based on 4-6-12 graphene layer. For graphyne layers the sublimation energy varies in the range from 6.62 to 7.08 eV atom−1, the band gap ranges from 0 to 0.643 eV. The structures of polymorphs of the graphyne are characterized by deformation parameter the value of which correlates well with the sublimation energy.
Numerical experiment with investigation of hydroelastic systems constructions dynamics and strength with according verification
Authors: Kaplunov S M , Vales N G , Dronova E A , Chentsova N A 
Published: January 2020

Abstract
The paper is devoted to the analysis of numerical modeling data exact as it possible to determine hydrodynamic loads on different constructions and objects of the modern energetic machine building with definition of pressure and flow velocities distributions on the surfaces for specified objects and also with special investigation of amplitude-frequency characteristics for the individual construction elements. According to proposed special verification methodical approach it confirms efficiency and correctness of the results obtained by authors. This includes too the application of the main original combined numerical approaches as for calculation process so as for effective verification of these results with support of special experiment analysis and proposed different verification schemes with the cutting of investigation costs. It is really also now that last 10-15 years the role of calculation methods became essentially increased.
Measurement of the strain induced α’ - martensite content by eddy current method in the presence of elastic stresses of austenitic stainless steels
Authors: Klyushnikov V A , Gonchar AV , Mishakin V V , Kurashkin K V 
Published: January 2020

AbstractThe effect of elastic and plastic deformation on the added voltage of eddy current probe under step loading of austenitic steel AISI 321 is investigated. The effect of mechanical stress on the added voltage significantly depends on the amount of residual plastic deformation is shown. This is due to an increase in the volume fraction of the strain induced α' - martensite content. The added voltage decreases at loading in the elastic region. At loading beyond the yield point, the added voltage of eddy current probe increases sharply. Under measuring the strain induced α' - martensite content by eddy current method it is necessary to take into account the influence of mechanical stresses is shown. An algorithm is proposed to reduce the measurement error of the magnetic phase fraction by taking into account the stress-strain state of the material.
Effect of electrospinning solution parameters on the properties of nonvolven fibrous material based on polyhydroxibutyrate
Authors: Olkhov A A , Staroverova O V , Kuherenko E L , Iordanskii A L 
Published: January 2020

Abstract
In the present work, the influence of technological parameters of poly-3-hydroxybutyrate solution on the process of electrospinning of ultrathin fibers has been studied. It was established that the electrical conductivity and viscosity of the polymer solution largely determine the geometry and morphology of ultrathin fibers. Modification of solutions with ionic electrolyte and hydrolytic agent reduces the initial molecular weight of the polymer and leads to an increase in the viscosity of the system. It’s shown that the inputting of CNT leads to theorientation of the polymer macrochains in the amorphous phase. As a result, there are increases in mechanical, sorption properties and resistance to oxidative, thermal-oxidative and hydrolytic degradation. The fibers obtained will find application in biomedicine.
Novel approaches in manufacturing of multicomponent metallic binders for diamond cutting tools
Authors: Loginov P A , Sidorenko D A , Vorotilo S. , Levashov E A 
Published: January 2020

Abstract
In this study, three approaches for the diamond cutting tool binder improvement are shown. They allow to reinforce the binders and enhance their wear resistance, thus making diamond grain retention in the working layer of the tool more reliable. Mechanical alloying methos was used to obtain a homogeneous and nanocrystalline structure of the powder binders. It increases the bending strength of iron- and copper-based binders by 60-100 %, to 2500 and 1200 MPa, respectively. The positive effects achieved by adding different types of nanoparticles are summed up during hybrid modification of the binders. It has been verified, both theoretically and experimentally, that hybrid modification with WC and hBN nanoparticles, as well as carbon nanotubes, simultaneously increases binder strength by 20% and improves binder wear resistance during machining of abrasive materials threefold. Doping iron-based binders with adhesively active elements (titanium, chromium, etc.) enhances the diamond retention capacity due to formation of carbide interlayers at the metal–binder interface.
The effect of various factors on the strength and ignition of the used Ni-Al system
Authors: Seropyan S A , Saikov I V , Salamatov V G , Alymov M I 
Published: January 2020

Abstract
The aim of this work was to obtain structural reactive materials from high-energy mixtures. The effect of various additives on the parameters of the burning rate and the ignition temperature was studied. The object of the study was a powder mixture based on nickel and aluminum in a stoichiometric ratio with a particle size of less than 50 microns. Boron and tungsten fibers were used as reinforcing and energy elements. Mixtures of powders were compacted to a relative density of 0.7 and 0.8. Specimens were made in the form of a parallelepiped. The strength of the samples was studied using three-point bending. It was possible to increase the initial strength of the samples by 9 times when reinforced with tungsten fibers.
Effect of temperature fields and bottom sediments of oil products on the stress-strain state of the design of a vertical steel tank
Authors: Sultanbekov R R , Terekhin R D , Nazarova M N 
Published: January 2020

Abstract
Tanks for storing oil and oil products during operation are exposed to a combination of external, static, low-cycle, temperature, snow and wind loads, bottom sediments, etc., which leads to a decrease in operational reliability and a decrease in the durability of tank structures. Numerical modeling methods, in contrast to standard methods for calculating strength and stability, allow us to create an adequate finite element model at the stage of development of a geometric model. This article describes the analysis of the stress-strain state of the tank taking into account bottom sediments of oil products and the influence of the temperature of the oil product and the environment using the Ansys software package. Based on the analysis of the stress-strain state using finite element modeling on the example of a vertical steel tank, it was shown that the stresses in the zone of the miter weld, as well as in the places of installation of the receiving-distributing branch pipe and the manhole, are maximum. It is in these zones that the influence of bottom sediment and temperature is significant, since they form local elevated stress zones, which increase significantly when the walls are thinned.
Mechanical properties and fractographic analysis of the Ti49.14Ni50.86 alloy in a coarse-grained state during multiple martensitic transformations
Authors: Churakova A A , Kayumova E M 
Published: January 2020

Abstract
The mechanical behavior of the coarse-grained Ti49.14Ni50.86 alloy after multiple martensitic transformations B2-B19’ was investigated. A fractographic analysis of the samples after mechanical tests was carried out. The fracture pattern of the Ti49.14Ni50.86 alloy in the coarse-grained state has a viscous and heterogeneous character with microdepths on the fracture surface, the average size of which decreases as the number of thermal cycles increases.
Fatigue life of damaged rails
Authors: Shur E A , Borts A I , Bazanova L V 
Published: January 2020

Abstract
Experimental studies of the residual static strength of rails with transverse cracks in the head are carried out. The transverse cracks were detected by means of flaw detection in railway track. The average values of the relative area of the crack and the breaking load are determined. In order to verify mathematical models for determining the residual life cycle of rails with cracks in the head, a methodology for fractographic estimation of the speed and duration of fatigue crack propagation has been developed. The methodology was developed on the basis of fractographic analysis and studies of macroline fatigue in a crack that developed in a rail on a single-track section with a regular change in the direction of train movement. A linear part of the graphic dependence of the crack growth rate on the maximum value of stress intensity factors (Paris diagram) for rails under real operating conditions was calculated.
Synchronized cell balancing charging of supercapacitors using PI control
Authors: Rashed M.A , Fahmi M I , Azizan M M , wai C L , Zhe L W , Rosle N F 
Published: January 2020

Abstract
This paper covers the synchronized cell balancing charging of supercapacitors using pi control. The main objective of this project is to design a balanced circuit for supercapacitor and balance the voltage for each supercapacitor in series using pi control. This project aims to introduce a switch resistor design for a supercapacitor to balance the cell. Due to its low cost, easy to implement, and charge/discharge, the switch resistor design was chosen as the balanced circuit. The switch resistor design process was accomplished taking into account all the calculation for the design parameters. Using the pi control given to the circuit the stability and balancing in the voltage. The pi control design process was accomplished with the calculation for the design parameters.
An automatic irrigation system for plants using fuzzy logic controller considering volumetric water content
Authors: Rahim S. , Hussain M H , Rahim S R A , Hashim N , Halim H A 
Published: January 2020

Abstract
An automatic irrigation system have an important role in today agriculture sector. Currently, automatic irrigation systems which can irrigate and supply plants with desired level and amount of water required for normal plant growth are not available. Furthermore, the classical method using on-off controller is inefficient due to results in loss of energy and productivity. Thus, an efficient automatic irrigation system with fuzzy logic controller is proposed to estimate the amount of water level using the irrigation model, soil type and type of plant. This paper presents a solution for irrigation system for plants using fuzzy logic controller using MATLAB Simulink. To indicate the effectiveness of the proposed method, on-off controller method is also applied for validation purpose.
A Comprehensive Study on Tunneling Field Effect Transistor using Non-local Band-to-Band Tunneling Model
Authors: Hussain Sazzad , Mustakim Nafis , Singha Showmik , Saha Jibesh K 
Published: January 2020

Abstract
In this research work, a n-type silicon tunneling field effect transistor (TFET) has been designed and investigation has been carried out on its performances by altering different device parameters such as gate insulator dielectric constant, channel thickness, gate geometry, and channel length. The performances have been evaluated based on subthreshold swing, threshold voltage and I
on
/I
off
ratio of the devices. The goal is to find a device which would simultaneously have a low subthreshold swing (SS), low threshold voltage, and a high I
on
/I
off
ratio. It has been observed that having a double gate, short channel length, high-k dielectric, and low channel thickness leads us towards a compact design and the device exhibits very promising values of the aforementioned performance criteria. The most attractive proposition about a TFET is its ability to have a subthreshold swing lower than 60 mV/dec which is the theoretical limit of a MOSFET. In this study, an optimized device is obtained which has a subthreshold swing (point) of around 26 mV/dec and an I
on
/I
off
ratio in the order of 1013. In addition, an inverter has been designed using a n-type TFET and a resistor to show the potential of TFETs to be used in logic circuits.
Effect of diode laser on physical properties of CdS thin films
Authors: Abdulmunem Saeed Asrar , Jasim Ghdeeb Nadia , Jawad Kadhum Farah 
Published: January 2020

Abstract
In this study, Cadmium Sulphide (CdS) thin films are deposited on glass substrates by means of Spray Pyrolysis method to examine the influence of electromagnetic and optical features of these films by diode laser . Accordingly, samples are feasibly irradiated by laser pointer with a power of 500 mw and a wavelength of 532 nm at distance of 10 cm from the source during dissimilar exposure times of 10, 20, 30, 40, 50, 60, 70 and 80 minutes. The absorbance spectrums have been measured by UV-visible spectrophotometer under range of 190-1100 nm. Optical parameters such as transmission, reflection, absorption coefficient (α), extinction coefficient (K), optical band gap (Eg), refractive index (n), and complex dielectric constants were evaluated from absorbance spectra. The results shows that the laser pointer irradiation cause decreased in transmittance (T), reflectance (R), absorption coefficient α, the extinction coefficient (K), refractive index (n) and the real and imaginary parts of dielectric constant and decrease in the value of the energy gap (Eg). In study of FTIR-spectrum of CdS films in different ratio of irradiation times, there was no change in the peak positions just bigger or smaller with increase in times of irradiation.
Analysis of automatic transmission fluid in CNG bus engine by ferro graphic technique
Authors: Abdul Rahman Norhanifah , Katon Matzaini , Manap Norhashidah , Ain Abd Rahman Nur , Ghazali Hanipah 
Published: January 2020

Abstract
Public transportation helps to reduce road congestions, gasoline consumptions, saves money and also enhances personal opportunities. However, maintenance problem is a concern in public transportation that could cause disruption of service. In this study, this issue had been addressed in order to help prediction of wear so that the problem could be predicted before it happens. This study looks into the Compressed Natural Gas (CNG) Engine of Nadi Putra bus on the inconsistency range of mileage in changing the Automatic Transmissions Fluid (ATF). The objective of this project is to study gearbox conditions in a bus (Nadi Putra) in term of lubrication and wear. Ferrographic analysis was carried out in order to determine types of wear particles and suitable range of mileage for the bus to change the ATF by analyzing the sample of transmissions fluid taken from bus gearbox. Optical microscopy and Predict Chart were used to characterize and identify sample in where groups. It was observed that the rolling-element fatigue and cutting wear were major findings in all samples oil analysis tested.
Computational analysis of thermally stratified mixed convective non-Newtonian fluid flow with radiation and chemical reaction impacts
Authors: Loganathan K. , Prabu K. M. , Elanchezhian E. , Nirmalkumar R. , Manimekalai K. 
Published: January 2020

Abstract
The important goal of this article is to examine the thermally stratified flow of Oldroyd-B liquid induced by a stretchy sheet. Mathematical model of physical problem is situated with radiation and chemical reaction impacts. By help of similarity transformation, PDE’s are converted into ODE’s with dimensionless variables. Homotopy technique is employed for solving nonlinear ODE’s. Graphs are represented to notify the change of flow parameters, temperature and concentration parameters. Also mass and heat transfer rates are demonstrated through graphically. We observe that Thermal stratification constant reduces the heat transfer rate. On the other hand, thermophoretic and chemical reaction constants boost up the mass transfer rate.
Environmental Indicators through Artificial Neural Networks
Authors: Silva Jesús , Senior Naveda Alexa , Hernández Palma Hugo , Niebles Núñez William , Jiménez Rodríguez Luis 
Published: January 2020

Abstract
Indicators are the most important management tool for environmental monitoring. Environmental indicators condense the information and simplify the approach to environmental phenomena, which are often complex, and makes them very useful for communication. The usefulness of these indicators consists of providing relevant information, summarized in the form of concise and illustrative statements for decision making, both for the organization’s management and for the rest of the members. The prediction of limit values, together with the potentialities offered by the recommendation system based on ontology make this system a powerful tool for supporting decision-making in the Environmental Management process with a wide possibility of generalization in the business sector.
Review of feasibility wind turbine technologies for highways energy harvesting
Authors: Liew H F , Baharuddin I , Rosemizi Abd R , Muzamir I , Hassan S I S 
Published: January 2020

Abstract
Wind energy is one of the non-conventional forms of energy and it is available in affluence. It is also claimed that the wind power is pollution-free, replacement of fossil fuel and that its source of energy is freely available. Electricity can be generated with the help of a wind turbine generator. In this paper, a comprehensive study on contemporary portable wind energy harvesters has been conducted. The different existing performance such as reliability evaluation models, various problems related to structure wind turbine components (blade, gearbox, generator and transformer) and grid for wind energy system have been discussed. At the same time, experimental analysis is focused on behaviour, especially characteristics of impact wind energy, performance as lots of advanced research work has already been done or going on the harnessing of natural wind energy. In this review paper, a different model wind turbine has been studied from previous testing purpose presented. This review aim of utilizing this wind energy in a most effective manner to get the maximum electric output, and therefore the government can think over implementing the suitable type of wind turbine configuration selected highway at low cost as our installation site taking the advantage of the moving vehicles on both sides of the road.