bluuebunny/crossref_metadata_2025_split huggingface dataset:
Designing market systems with content management system (CMS) WordPress
Authors: Gunawan A , Wahyuni N , Akmal R 
Published: December 2019

Abstract
The era of industrial revolution 4.0 was marked by the application of information technology in running industrial activities, the application of information technology needed was the development of a website-based business application model to increase competitive advantage. duta dharma is one of the medium enterprises that produce various types of processed soap. The sales system at cv duta dharma uses a manual system. This is still not fallen enough to change a significant increase in development. Therefore, need to design an e-commerce website-based online marketing information system. System modeling in the e-commerce website design system cv duta dharma is designing a context diagram to find out the stakeholders, designing decomposition to find out the inputs, processes, and outputs. Then design a data flow diagram to find out the data flow in the sales system, e-commerce website duta dharma enterprises have been designed and created with Wordpress. This e-commerce website has bank transfer payment facilities and can be run well and is expected to be able to make them more known and make it easier in product marketing.
The analysis of heat transfer and pressure loss for the air flow through heated cylinders with concave delta winglet vortex generators in rectangular channel: an experimental study
Authors: Effendi Y , Syaiful  , Djaeni M , Winoto S H 
Published: December 2019

Abstract
The use of vortex generators to increase heat transfer in the evaporator fin-and-tube heat exchanger. Therefore the purpose of this study is to determine the effect of the use of vortex generators on increasing heat transfer coefficient and flow loss at heated tubes in rectangular channel. The experimental method is to compare the use of vortex generators and without (baseline). Vortex generators include 1, 2, 3 rows of pairs of concave delta winglet vortex generators (CDWP) and delta winglet vortex generators (DWP). Both of types of vortex generators at angle of attack (β) 15°, inlet velocity variation from 0.4 m/s - 2.0 m/s. Vortex generators were mounted on aluminum plate, heated tube with 35 watts and temperatur 38°C. Inlet, outlet and tube temperatures are measured using a thermocouple. The experimental result show that with the use of vortex generators the values of convection heat transfer coefficients and flow loss increased compared to those without vortex generators. The highest heat transfer coefficient on reynold number range 11000-12000 when using 3 pairs of concave delta winglet vortex generators are 46.76%, and 52% value pressure loss at inlet velocity 2 m/s on 3 pairs of concave delta winglet vortex generators, compared to baseline (without vortex generators).
Investigation of the correlation between drainage condition and pavement performance
Authors: Iskandar D , Hadiwardoyo S P , Sumabrata R J , Fricilia M 
Published: December 2019

Abstract
One of pavement deterioration causes is the lack of road drainage maintenance. Road drainage system has a function to dry the pavement thus water can flow as quickly as possible out of the road surface and then flow through the channel to the final disposal. Road distress will interfere the comfort and safety ride and affect the pavement structure performance and quality. This research aims to identify and analyze the influence of drainage conditions through road pavement structures distress using Pavement Condition Index (PCI) method in Jakarta. The method used is a field research with primary data in the form of road distress survey that will be evaluated using PCI and analyzed using factorial experiment design. The research results using Design of Experiments shows that the main factors which greatly influence the road distress is drainage conditions, PCI score and surface water condition. Most of the surveyed region has a “good” PCI score and “routine maintenance” type.
Performance and emission study of exhaust gas single cylinder diesel engine based on fuel bioethanol – high speed diesel (HSD) using fumigation and blending methods
Authors: Rosyadi I , Haryadi  , Henry  
Published: December 2019

Abstract
Diesel engine exhaust gas contains a lot of particulates because it is influenced by factors from fuel which is not clean. The addition of ethanol to diesel fuel is expected to provide a solution to reduce exhaust emissions from diesel engines. The first step is fumigation method, process of mixing High Speed Diesel (HSD) and bioethanol directly in the combustion chamber of a diesel engine. The second method is compared with Blending method. HSD is mixed with bioethanol, there are 5 variation mixing. Variation 1 blending method diesel fuel (diesel), variation 2 (93% diesel, 2% surfactant and 5% ethanol), variation 3 (HSD 88%, 2% surfactant and ethanol 10 %), variation 4 (83% diesel fuel, 2% surfactant and 15% ethanol) and variation 5 Fumigation method (ethanol and diesel). This work were carried out at the Performance Engine Laboratory and Mechanical Engineering Manufacturing Laboratory in Engineering Faculty of Universitas Sultan Ageng Tirtayasa. The hypothesis of this research is that the mixture of ethanol and diesel fuel produces greater power and consumption compared to diesel fuel. Ethanol and diesel fuel mixtures can also reduce air pollution compared to diesel. Judging from the smoke density of each fuel.
Rice husk gasification performance to decrease water content in liquid palm sugar
Authors: Listijorini E , Wiyono S 
Published: December 2019

Abstract
Gasification is a process of changing thermochemical solid fuel into gas. In simple terms, the gasification process can be said as a chemical reaction at high temperatures between biomass and air. The purpose of this study was to determine the effect of AFR on the performance of the TG30-1 gasification engine and compare it with the same engine performance in previous studies. This study uses blowers which are combined with an inverter to vary the frequency of rotation of the motor. From the three tests, the results of different performance analyses were obtained. In this study, experiments on corn cobs biomass for 45Hz motor frequency (90%) produced the best Fire Power and Specific Power at 23.01 kW and 3.71 kW / kg with AFR values of 1.54. Palm shell biomass with 45Hz motor frequency (90%) yields 18.32 kW and 3.24 kW/kg with an AFR value of 1.23. Wood powder biomass with 45Hz motor frequency (90%) produces 22.53 kW and 3.88 kW / kg with an AFR value of 1.36. Rice husk biomass with a 45Hz motor frequency (90%) yields 29.08 kW and 6.39 kW / kg with an AFR value of 1.15.
Effect of air fuel ratio (AFR) on performance of gasification machine TG30-1 using water boiling test method on wooden powder biomass
Authors: Lusiani R , Sudrajat A , Erwin  
Published: December 2019

Abstract
Gasification is a process of changing thermochemical solid fuel into gas. In simple terms, the gasification process can be said as a chemical reaction at high temperatures between biomass and air. This study was to determine the effect of AFR on the performance of the TG30-1 gasification engine and compare it with the same engine performance in previous studies. This study uses blowers which are combined with an inverter to vary the frequency of rotation of the motor. From the three tests, the results of different performance analyses were obtained. Result wood powder biomass with 45Hz motor frequency (90%) produces 22.53 kW and 3.88 kW / kg with an AFR value of 1.36.
Design of alpha type stirling machine biomass-based innovation design with the capacity of 100 watt
Authors: Satria D , Susilo S , Lusiani R , Hermawan Y 
Published: December 2019

Abstract
Stirling machine has the advantage that it can utilize all kind of fuel, so that it is suitable for biomass utilization. In this study the analysis of best design of stirling machine different from previous study was carried out, which is design innovation on alpha type stirling machine by making phase angle become 180°, with the aims of lowering the gravitational force when cool cylinder is compressed, because the existing phase angle used is (90°) has the disadvantage of cool cylinder which is perpendicular, so that the compression is against gravitational force. The designing method was conducted by using Quality Function Deployment. The result of this study was to obtain the best variance of shape and machine stirling design dimension, which is variance 5, biomass stove- pulley and belt- was directly used. Variance 5 is chosen because it was the most suitable with the designed specification. Biomass stove is chosen as heat source, because the fuel used is classified as alternative fuel. Pulley and belt were chosen as mechanism of work transmission, because it has less noise compare to sprocket and chain. Its output work was directly chosen because its construction is simpler and the energy used is more optimal.
A Preliminary study of three-phase column flotation process monitoring using electrical capacitance volume tomography
Authors: Haryono D , Harjanto S , Rahmandani H F , Oediyani S , Nugraha H , Huda M A 
Published: December 2019

Abstract
A preliminary study of three-phase column flotation process using electrical capacitance volume tomography (ECVT) has been conducted. The purpose of this study is to investigate the possibility of ECVT method as a monitoring system by correlating the relative permittivity distribution (or three-dimensional image) with metallurgical performance (recovery of the process). Experiments were performed in a laboratory-scale flotation column with ECVT sensor embedded outside the pipe wall on the collection zone. The feed used was a synthetic ore consisting of sphalerite and silica with the purity of 99%. Process parameter used was air flow rate ranging from 2-4 l/m which each process was conducted for 10 minutes. The results showed that the ECVT method could observe the dynamic process of flotation, specifically in monitoring a feeding process and a separation process. They were indicated by increased and decreased relative permittivity distributions respectively. Relative permittivity signal and metallurgical performance have a good correlation and showed a positive correlation. These results show a prospect of ECVT method as the monitoring system in the flotation process, but further works need to be done for this monitoring system.
Impact Optimal DG Placement Against Harmonic Distribution on Reconfiguration Distribution Network on Microgrid System
Authors: Faraby M D , Penangsang O 
Published: December 2019

Abstract
Increases in harmonic distortion in Radial Distribution System (RDS) will result in additional shorter insulation lifetime, higher temperature and also malfunction. These are undesirable as they cause power losses and also affect the voltage profile. In this paper the harmonic analysis is carried effect and performance placement Distributed Generation (DG) after reconfiguration distribution network in active radial distribution system or microgrid concept. The optimal size of DG is determining using K-Means Clustering method and Load Curtailment method to designing distribution network reconfiguration after restoration. The load flow analysis and harmonic flow analysis is carried out with direct approach using BIBC and BCBV matrices. The proposed method is carried out on IEEE 33 bus system having the harmonic sources injected as current sources using MATLAB and ETAP software. The result show DG placement on 4 bus points using K-Means Clustering can improve voltage levels and reduce harmonic dispersion. After restoration and reconfiguration of the system, the harmonic spread is strongly influenced by the current flowing on the bus and the location of the source harmonics on the system.
Classification of News on “Radar” Tarakan Online Using K-Nearest Neighbor Method with N-Gram Features
Authors: Bintari E D , Gunawan  , Indriani A 
Published: December 2019

Abstract
Classification or text categorization is one of the most common themes in analysing complex data. The classification in this research aims to define the class of an object that has not been known to the class. The classification process will be performed in the process of learning and testing against a known class dataset object. As an online news information, Radar Tarakan classifies news to ease readers to find the desired news and to ease the work of the administrators to do the automatic classification. The website of Radar Tarakan daily news (www.radartarakan.co.id) publishes approximately 480 local news everyday. Local news is the news in the surrounding areas of Tarakan in North Borneo. The website contains the classification of eight local news including the dimensions of the area surrounding the town of Tarakan. This research uses 720 news to build the system of news classification automatically. A text classification method used in this research is the K-Nearest Neighbor (KNN) with N-grams. The accuracy of matching classes generated by the K-Nearest Neighbor with N-Gram is 85.65% (out of 180 test data) and that of the sub class is 70.35 %. The classification time is around 2.7 second per news.
Optimization of Pouring Temperatures and Stirrer Speed Parameters on a Semi-Solid Slurry of ADC12 Al Alloy Prepared by Mechanical Stirring
Authors: Rasyid S , Renreng I , Arsyad H , Syahid M 
Published: December 2019

Abstract
This paper presents an experimental design approach for the optimization process parameters for the aluminum solid alloy casting of ADC12 alloys. To achieve this goal, the pouring temperatures and stirring speed are selected and two levels of this parameter are considered. Design of expert (DOE) of tests was used for experimental design and analysis of results. The aluminum ADC12 slurry is stirred by a mechanical stirrer (round rods stirrer models) with a variation of speed 250, 300, 350 rpm for 20 seconds. Furthermore, the aluminum slurry of ADC12 is poured on a metal mold with a temperature of 620 °C, 600 °C, and 580 °C. The microstructure characteristics were examined by direct observation using optical microscopy, secondary α-Al phase dendrite arm spacing and shape factor were identified. The mechanical properties were investigated by the hardness test and tensile test. The mechanical properties and microstructure of aluminum alloys ADC12 made with semi-solid rheocasting casting technology using several parameters pouring temperature and stirring speed have been studied, and the results obtained can be synergized as follows. ADC12 aluminum alloy slurry preparation using a round rod mechanical stirrer on semi-solid casting can improve mechanical properties. Low pouring temperature and high stirring speed are reliable techniques for producing the right mechanical and microstructure properties for a semi-solid casting process (Rheo casting). The pouring temperature and stirring speed are recommended to produce optimal mechanical properties and the round microstructure is 580 °C and 350 rpm.
Microstructure and Hardness Analysis of 2A14 Aluminium Alloy Join By Pulsed Electron Beam Welding
Authors: Dai Hailin , Du Ruizhao , Xing Shuai 
Published: December 2019

Abstract
Microstructure and hardness Analysis of 2A14 Aluminium Alloy Join by pulsed electron beam welding. Study on microstructure appearance and hardness analysis of 2A14 Aluminium Alloy Join by Pulsed Electron Beam Welding was carried out. The results show that the micro-structure of the weld zone was fine equaxied grains and the pulsed electron beam changed crystal morphology. The HAZ was the weakest hardness area of the the joint.
Mechanical Properties of CFRP Materials with Ply Splice Structures
Authors: Zhu Meng , Hu Qigao , Ju Su , Rui Wang , Chen Dingding 
Published: December 2019

Abstract
With the development of science and technology, it is inevitable to apply ply splice to meet the requirements of engineering size and shape. The existence of splicing structure will inevitably produce complex stress distribution inside the material, which will lead to serious safety hazards. In this paper, tensile and bending properties of unidirectional carbon fiber reinforced plastic (CFRP) with ply splice structures were studied through tensile and four-point bending experiments. The results show that the higher the number of splicing layers, the lower the tensile strength, and the final strength is determined by the number of continuous fiber layers without splicing. However, there is almost no effects of the ply spliced structure on the four-point bending strength because of the loading features and the fracture mode.
Noble metal catalysts growing on polyurethane foam monoliths by electroless plating deposition method for formaldehyde purification at room temperature
Authors: Xu Zehua , Chen Jiawei , Feng Ying , Guan Jiankang , Dou Yongshen , Liu Sanmao , Li Yongfeng 
Published: December 2019

Abstract
A series of monolithic catalysts were prepared by growing noble metals of Pt and Pd on polyurethane foam (PUF) monoliths via electroless plating deposition method. The as-prepared Pt-Pd/PUF monolithic catalysts can preserve the same size, shape and macroporous network of the pristine PUF monoliths. And the noble metal active components of Pt and Pd nanoparticles were uniformly dispersed on the surface of PUF monoliths. Therefore, compared to the low formaldehyde conversion of 14% over pristine PUF monolith, the obtained Pt-Pd/PUF monolithic catalysts exhibited excellent formaldehyde purification activity at room temperature: the formaldehyde conversion can reach as high as 66%.
Improving CO2 Absorption Performance of Ca-Based By Different Additives
Authors: Chen Luhan , Sun Zhiguo , Xu Jinqiu , Jia Shichao , Wang Menglu 
Published: December 2019

Abstract
In this work, diffident additives (sodium citrate, sodium acetate and KCl) are used to solve the problem that the CO2 absorption capacity of limestone decreases rapidly with the increase of cyclic calcination/carbonation reactions times. The results reflected that after adding 0.5% sodium acetate, the absorption rate and decomposition rate of CO2 in CaO are 1.01 times and 2.08 times higher than that without adding, and the absorption rate and decomposition rate are 2.65 times higher than those without adding after 10 cycles, and the decomposition rate is increased by 95.8%. After the addition of 1.0% sodium citrate, the first absorption rate increased by 28%, the 10 cycles increased by 38%, and the decomposition rate of the first calcium carbonate increased by 2.4 times. After adding 0.8% KCl, although the first absorption rate decreased by 36%, the decomposition rate of CaCO3 increased by 2.08 times after 10 cycles, and by 95.1% after 10 cycles. Therefore the use of additives improves obviously the CO2 absorption of CaO.
Finite element analysis of solenoid coil for deep crack detection in cylindrical forgings
Authors: Du Wenbo , Hu Chang’an , Li Jiangang , He Min , Zhou Mingyao 
Published: December 2019

Abstract
The skin effect exists on the surface of the cylinder workpiece, and the existing eddy current probes cannot detect the deep cracks in the forgings. In order to improve the detecting depth of eddy current, based on the principle of electromagnetic induction, the solenoid coil size, location, etc. The influence of parameters on the eddy current penetration depth, considering the solenoid coil exciting current frequency, current density, hoisting height of solenoid coil, coil width, the thickness of the coil and the solenoid coil distance plate specimen under test, test parameters, such as adopting ANSYS software of eddy current density under different parameters with numerical simulation, analyzes the solenoid coil used for deep crack detection accuracy, on this basis, the optimal design can be used for the deep crack detection of solenoid sensor structure, It is applied to the main shaft of forgings with artificial deep crack. The simulation results show that the combined solenoid probe can be used to detect deep cracks in cylindrical forgings.
Multi-Angle Phased Array Ultrasonic Line-Scan Method for Steel Reinforced Polyethylene Electro-fusion Welded Joint
Authors: Ding Nan , Wang Zicheng , Gui Linlin , Li Yuke 
Published: December 2019

Abstract
In view of the difficulties and ultrasonic blind zone problems in the ultrasonic inspection of electro-fusion welded joint of steel reinforced polyethylene composite pipes, an inspection method based on phased array inspection technology, which compounds multi-angle line scan image, is proposed in this paper. It inspects by forming a plurality of B-scan images through setting up multiple line scanning channels and quick switching in the inspection process, then forming a new B-scan image after optimizing and reconstructing by computer and retaining relevant A-scan signal data for defect evaluation, thus realizing rapid and efficient real-time imaging inspection on the ultrasonic blind zone of the electro-fusion welded joint of steel reinforced polyethylene composite pipes.
Influence of the residual thickness of the interlayer on the stress-strain state in the nodes with soft interlayer
Authors: Li Qi , Xiong Ming , Liu FengMei , Yue Xiong , Yi Yaoyong 
Published: December 2019

Abstract
Ni3Al-based superalloys have excellent mechanical properties which have been widely used in civilian and military Fifield. In this study, the influence of the residual thickness of the interlayer on the stress-strain state in the nodes with soft interlayer was investigated by ccomputer simulation.To establish the general patterns of SSS formation when loading cylindrical nodes with interlayers of soft rigidity and checking the adequacy of the simulation, thickness of interlayer (0.01, 0.03, 0.05, 0.08mm) were calculated. The result shows that in all the thicknesses of the interlayer, both in the main material and in the interlayers, the nature of the distribution and the magnitude of the stiffness coefficients of the stressed state kstiff are practically identical. In the base metal, over most of the joint length, this coefficient is close to 1, decreasing to 0.88 in the nodes with “soft”. This corresponds to the general laws of mechanics and confirms the adequacy of the results of computer simulation.
Influence of Intense Solar Radiation on Long-span Steel Structures
Authors: Mao Jiayi , Xiao Jianchun , Zhang Hanming , Tang Tao 
Published: December 2019

Abstract
The temperature distribution of a long-span structures is not uniform due to solar radiation. Assumptions of uniform and nonuniform temperature field make the analysis results different. A mathematical model of solar radiation is established to calculate the hourly radiation intensity on the surface of a building at any geographical location. The temperature distribution of a 100m span spherical reticulated shell located in Guiyang city in China is calculated. The mechanical performance of the structure is analysed by finite element method. The following results gives: 1. the highest temperature is 48.5°C and the lowest temperature is 23.0°C. 2. The nonuniform temperature distribution makes the deformation of the reticulated shell no longer symmetrical.
Synthesis of 2-Chloro-4-(3-Nitrophenoxy) -6-(Thiophen-2-Yl) Pyrimidine
Authors: Zhang Binliang , Zhou Yanmin , Gu Qi , Xu Shan 
Published: December 2019

Abstract
2-chloro-4-(3-nitrophenoxy)-6-(thiophen-2-yl) pyrimidine (8) is an important intermediate for small molecule anticancer drugs. A rapid and high yield synthetic method for 2-chloro-4-(3-nitrophenoxy)-6-(thiophen-2-yl) pyrimidine (8) was established in this work. The target compound was synthesized from the commercially available pyrimidine-2, 4, 6(1H, 3H, 5H)-trione (5) through three steps including halogenation reaction, coupling reaction and nucleophilic reaction. The structure of the target product was confirmed by 1H NM. In addition, the synthetic method was optimized. The total yield of the three steps was high up to 85%.