bluuebunny/crossref_metadata_2025_split huggingface dataset:
Optimization of Sei Mangkei special economic zone (sez) industrial land based on user needs
Authors: Widoyoko  , Nazaruddin  , Hidayati Juliza 
Published: June 2020

Abstract
Sei Mangkei Special Economic Zone (SEZ) is an industrial area with a total land area of 1,933.8 Ha, which is distributed into 18 (eighteen) zoning allotment areas. This industrial land zone has a 1 (one) type single plot, which is 1: 1 (200m x 200m) size or 4 hectares. With a single size pattern will result in high land residuals and cannot serve the needs of diverse users (markets) especially investors who need less than 4 (four) hectares of land. The pattern of size and variety of lots requires a redesign to be able to produce effective land use and provide optimal benefits for the company. In accordance with Permenperin No. 40 of 2016 that the pattern and size of industrial land is divided into 3 (three) sizes, i.e. plots of land ready to be built with small sizes ranging from 300 - 3,000 m2 per lot, medium size 3,000 - 30,000 m2 per lot and large sizes above 3 Ha per lot. The method of optimizing the size and variety of lots uses a model of dynamic programming and linear programming with the help of POM-QM software.
Identification of critical part in ripple mill repair design using quality function deployment method
Authors: Ginting Rosnani , Sawaluddin  , Fauzi Malik Alfin 
Published: June 2020

Abstract
At the company found problems related to the length of the product assembly process. The assembly system can be optimized by eliminating, combining, or simplifying the way the product is assembled so that the time needed in the assembly process becomes more minimum. If this design improvement is also carried out on other products produced by Jayatech Palmindo company, it will have a significant impact on reducing assembly time and unit costs in the production process. The integration of the Quality Function Deployment, Design for Manufacture and Assembly methods is expected to provide the right solution to improve the design of the ripple mill product and other products at Jayatech Palmindo company so that assembly time can be further shortened, and minimal unit costs without changing the value from the company’s products.
Determination of component categories using logic tree analysis
Authors: Rizkya I , Siregar I , Siregar K 
Published: June 2020

AbstractSterilizer machine plays important role in crude palm oil. Component machine has an important function to determine a maintenance based on the failure. Component failure is used to determine a correct maintenance. The problem faced by the company today is the high downtime of the sterilizer making machine causes the sterilizer production process to be disrupted. Machine breakdown around 35,66 hours/month. Machine failure analysis using the Failure Mode and Effect Analysis (FMEA) method and the Logic Tree Analysis (LTA) method. The LTA method used to determine priority to each failure mode and to review functions and malfunctions produce categories A (evident), B (safety), C (Economic Problem) and D (Hidden Failure) with the largest percentage for category B. The FMEA method analyse the factors causing component failure and its effect on overall system function by giving a Risk Priority Number value (RPN) based on severity, occurrence, and detection. The FMEA method produces the highest RPN values for 5 components namely IGBT, Mosfet, Bearing Bushing, Rool Former, and V-Block. LTA method shows that B Category has the largest percentage of component category. The result of this research is to categorize component failure and determine the Risk Priority Number for sterilizer machine.
Used tires recycle management and processing: a review
Authors: Haikal Sitepu Muhammad , Armayani  , Rahim Matondang Abdul , Tryana Sembiring Meilita 
Published: June 2020

Abstract
The number of used tires in the world is projected to increase in the future due to an incrementing number of cars and motorcycles particularly in developing countries such as Indonesia. This situation can endanger the environment and public health since it poses a high risk for fires. Despite the environmental impacts, used tires present economic values. This can be achieved by processing it into several forms such as tire-derived fuel, asphalt rubber, and rubber-plastic products. Furthermore, to collect used tires from tire users and send it into used tires recycler, management scheme is required. This paper aims to review the development of used tires recycle management and processing. It has been found that several management schemes for recycling used tires have been identified from literature including Extended Producer Responsibility (EPR), Free Market, and Government. Moreover, several processes to recycle used tires were identified, such as: retreading, energy recovery, product recycling, material recycling, and pyrolysis.
Quality control of crude palm oil (CPO) using define, measure, analyze, improve, control (DMAIC) and fuzzy failure mode and effect analysis
Authors: Siregar Khawarita , Ishak Aulia , Andi Sinaga Heru 
Published: June 2020

Abstract
In this case, the company Crude Palm Oil (CPO) is still not able to produce palm oil that meets the specifications that can be seen from the free fatty acid content reaches 3.51%. This can affect the quality of the products to be able to compete with a competitor. Therefore, this study aims to conduct quality control of Crude Palm Oil (CPO), to analyse the proportion of disability and ability in the production process, potential failures, to identify the root cause of the defect, and to calculate the value of the highest FRPN. The results of the study showed that the biggest problem faced by parts of machine settings and control machines that are not good due to less rigorous and disciplined operator in charge and has a value of FUZZY FMEA (FRPN) most high at 662.06 While the measurement results the sigma value of the company is 3,16. The results of the study showed that the biggest problem faced by parts of machine settings and control machines that are not good due to less rigorous and disciplined operator in charge and has a value of FUZZY FMEA (FRPN) most high at 662.06.
Design of warehousing system in order picking process: literature review
Authors: Melinda Tiara , Nazaruddin  , Ginting Rosnani 
Published: June 2020

Abstract
The warehouse is one part of a company that is holding an important role in the supply chain as a link between producers with the consumer. One of the most dominant activities in warehouse operations is the order picking process. This activity is very important because it directly affects consumer services. Even order picking generally spends around 55 % of total warehouse operating costs. The purpose of this paper is to build a framework that affects the order picking process using the Genetic Algorithm method. Some variables that influence the order picking process, especially the efficiency of order picking time include travel time, search time, pick time, setup time, number of workers and efficiency of workers. One of the causes of the high time of orders picking is the preparation of products that are not right in the warehouse. Genetic algorithms are used to find the best combination of product compilation. So that it is expected that improvements in the order picking process can improve warehouse efficiency.
The effect of fluxing material and method on the inclusion content of strontium modified A356.2 at Indonesia Asahan Aluminium Company
Authors: Kusriantoko Parindra 
Published: June 2020

Abstract
Aluminium foundry alloys are often contaminated with non-metallic inclusion particles in forms of oxides, carbides, and spinel. These inclusions can lead to significantly reduce of mechanical properties of aluminium foundry alloy. Fluxing treatment is one of the conventional methods for removing inclusions and oxides from the melt to enhance the quality of aluminium foundry alloy. In this study, we used several recipes of metal treatments and flux dosages and investigate the quality of A356.2. Filtration graphic by Prefil Footprinter and hydrogen content data by AlScan Hydrogen Analyzer were obtained to fully analyze the mechanism and get the best fluxing parameters.
Calculation of optimal raw material purchase costs using normalized goal programming method
Authors: Tambunan MM , Sinaga TS , Albert  
Published: June 2020

AbstractSupplier selection is a very important activity to build an effective supply chain. The purchasing department is the department responsible for determining the number of raw material purchases from several suppliers. The purchase of optimal raw materials is done using normalized goal programming. Supplier selection criteria serve as targets to minimize the cost of purchasing raw materials, minimize reject of raw materials, and minimize delays in raw materials. From the results of the study obtained an optimal allocation of raw material orders and calculated the optimal cost of purchasing raw materials. Finally, order allocation by selecting the right supplier can reduce purchasing costs by 6.51% rice bran raw material, 4.85% yellow corn raw material, and 4.71% shrimp head flour raw material.
Comparison between client-side and server-side rendering in the web development
Authors: Fadhilah Iskandar Taufan , Lubis Muharman , Fabrianti Kusumasari Tien , Ridho Lubis Arif 
Published: June 2020

Abstract
Mandatory servers for universal applications that is accessible to number of users may be a deterrent for the corporation and excessive for small applications even though it could bring the compatibility advantages. Knowing that demand of web application increases to provide convenience and ease of use to the users, client side rendering comes to create software more fast and efficient. It has been done by redirecting the request towards an HTML file then the server will give messages without any content or a loading screen until the device takes all JavaScript to allow the browser compiling everything before displaying the content. Therefore, the purpose of this paper is to analyse the comparison between client side and server side method in the respect of technical aspects in term of first content paint, speed index, time to interactive, first meaningful paint, first idle CPU and estimated input latency that present better performance with 2.1s, 2.0s, 2.2s, 2.1s, 2.2s and 20ms respectively on server side. It also provide better result based on Google Audit with 100% performance, 48% accessibility, 93% best practice and 89% of search engine optimization (SEO).
Modelling analysis of service quality improvement in mobile communications based on hard handover
Authors: Pinem Maksum , Zulfin Muhammad 
Published: June 2020

Abstract
Mobile communication systems make it easy for users to be able to do the communication process even in a mobile condition, one of which allows users to move from a cell area coverage to another cell area coverage, this movement phenomenon is called a handoff. Handoff is the process of diverting traffic channels automatically on a mobile station (MS) that is being used to communicate without termination. This paper analyzes the service quality improvement of the hard handover mobile communication network model from two to three base stations (BS) on the path loss parameter. Service quality parameters to be considered are the improvement of signal degradation and delay handover from two BS to three BS against the fixed and adaptive hysteresis methods.
The effect of alumina on mechanical behavior of Al 6064 alloy
Authors: Kumar Abhishek , Kumar Paras , Singh R C 
Published: June 2020

Abstract
Need in the development of new materials with excellent properties are growing day by day. Composite materials are the simple and better way to accomplish materials with superior properties. Aluminium metal matrix composites due to their high strength to weight ratio, low cost, improved electrical conductivity and good tribological properties are broadly produced and used in various engineering applications in the area of automobile, aerospace and military engineering. In the present paper an attempt has been made to fabricate MMC of an alloy of aluminium 6064, reinforced with alumina particles through stir casting with vortex technique. Three aluminium alloy composites with alumina (2.5-5-7.5 wt. %) were fabricated. Different mechanical tests for hardness, tensile strength and toughness were carried out for the samples. Addition of alumina to aluminium alloy shows an increase in mechanical properties of aluminium metal matrix composite. The results showed that the stir casting could produce uniformly distributed reinforced particles of Al2O3 in Al 6064 alloy.
Simulation of CoFRP analytical and computational model for various fiber volume fraction and Investigation of the local stresses for different fiber orientation angle
Authors: Maheshwari Peeyush , Misra Anadi , Singh Ashtosh Kumar , Rawat Kamal Singh , Verma Ankur , Singhal Kavita 
Published: June 2020

Abstract
Present work provides a numerical tool for analyzing the variation of failure strength of Coir Fiber Reinforced Polymer (CoFRP) with respect to Fiber Volume Fraction (FVF) and Fiber Orientation Angle (FOA). A model has been developed for analyzing the failure strength of CoFRP. It is analyzed for various fiber orientation angle and fiber volume fraction. Failure strength of the CoFRP depends upon both FVF and FOA. In this analysis, it has been investigated that the analytical results for CoFRP lamina are very close to computational results. Finite element analysis scores over the experimental tests as it is more convenient and economical method of analysis. Therefore, this method is more suitable for future work.
Comparison of a Classical Cyclone Separator and Protruding Surface Cyclone Separator using CFD Software
Authors: Sati Vinay , Kaushik Shivasheesh , Kshetri Rahul , Panwar Kuldeep , Pandey Rahul 
Published: June 2020

Abstract
Industrial smoke contains various hazardous particles, ash namely to be one of the various substances. The cyclone separator is a specially designed device used to separate the ash particles from the stream of air. The stream of dirt and air mixture flows in two vortexes, the inner vortex and the outer vortex, this device in turns acts as a scrubber and the ash particles get collected down in the ash collector whereas the fresh air stream is released by the device. To increase the efficiency, i.e. to increase the ash collecting capacity of the device, we have tried to compare a classical cyclone separator with the one we created which has protruding surfaces internally and the comparative analysis is done using the CFD software ANSYS R16.0.
Synthesis and characterization of nanostructured DNA-templated polyimidazole nanowire
Authors: Yahaya M I 
Published: June 2020

Abstract
In this research work, nanostructured DNA-templated polyimidazole nanowires synthesized using simple and low-cost fabrication method that employed DNA as a template on which to carry out the polymerisation was reported. Their chemical properties were probed using different spectroscopic techniques (Ultra-Violet Visible (UV-vis) spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and Fourier Transform Infrared (FTIR) spectroscopy). Atomic force (AFM) and electron microscopy (SEM and TEM) were used to characterize the nanowire dimensions. The techniques proved the formation of a supramolecular hybrid polymer containing DNA and imidazole polymers. The electrical property was measured using probe station. Morphological results exhibit different morphologies with agglomerate nanostructures for the diluted film, while dense rope like network of nanostructures were observed for undiluted templated polymers with diameter of 2-13 nm. Activation energy (Ea) including the uncertainty on it for the Plm/DNA bulk nanowires calculated was 10.6 ± 0.5 × 10−3 J mol−1 equivalents to 0.110 ±0.005 eV which is not surprising because the process is thermally assisted tunneling between localized sites.
2k Optimization approach for the removal of Pb2+ ions from water contaminated from oil-well drilling point on to MWCNTs
Authors: Gbajabiamila A T , Kariim I , Ighobesuo BO 
Published: June 2020

Abstract
The release of Pb2+ into the surrounding ecosystem has adverse effects on man and animal, hence, removing such harmful heavy metal from water system calls for urgent attention. The potential application of Multi-walled carbon nanotubes, MWCNTs, towards the lead (II) ions removal from oil polluted water body was studied and optimized via 2k factorial experimental approach. The MWCNTs produced was characterized via High Resolution Transmission Electron Microscope (HR-TEM), High Resolution Scanning Electron microscope (HR-SEM), Thermogravimetric Analysis (TGA), Fourier Transform Infrared (FTIR) and Brenuer-Emmette-Teller (BET) to determine the internal morphology, surface morphology, thermal stability, functional group and surface area respectively. The results of the HR-TEM depict the nano-structural diameter of the produced MWCNTs with continuous strands of tubes as depicted by SEM micrograph. The MWCNTs surface area produced was obtained to be 540 m2/g. The sorption of Pb2+ ions was optimized using 2k design approach where speed (rpm), absorbent dosage (g), temperature (°C) and time (min) were studied in a batch condition. The optimum conditions that give maximum sorption of Pb2+ ions on to the surfaces and the pores of the developed MWCNTs adsorbent were obtained at 60 min contact time, 59.89 °C, 0.20 g of adsorbent dosage and 599.98 rpm of agitation. Thus, the highest percentage sorption of Pb2+ ions by the MWCNTs from the oil-polluted water body was 99.5%. Hence, this study has demonstrated the potentials of MWCNTs as an effective and efficient sorbent for Pb2+ sorption from oil polluted wastewater.
Green synthesized silver nanoparticles for cream formulation: its anti-inflammatory and healing activities
Authors: Adeleye OA , Badru AO , Oyinloye OE , Fagbohun AB , Bakre LG , Bamiro OA , Babalola CO , Lateef A 
Published: June 2020

Abstract
Among several forms of metallic nanoparticles used in biomedical applications, AgNPs are the most fascinating and widely used. Therefore, this study was carried out to evaluate the antiinflammatory activity of Ehretia cymosa-AgNPs cream. Different extracts of the plant (methanol, ME; n-hexane, NE; ethylacetate, EE) were used to synthesize AgNPs, which were characterized by UV and FTIR spectroscopy. The AgNPs were used to prepare creams, and the physical properties of the creams were evaluated. Anti-inflammatory activities of the creams were evaluated by carrageenan induced rat paw edema method on albino rats. The biosynthesized AgNPs had UV absorption spectra in the range 400-450 nm. The creams had pH of 4.6-5.6 similar to the pH of the skin. Cream formulation NO (no extract) had no significant anti-inflammatory activity within 6 h of treatment while formulations NE, ME and EE had a significant anti-inflammatory activity within 6 h of treatment. The efficacy of the cream formulation of the extracts after 6 h of treatment was in the order EE > ME > NE. There was a significant anti-inflammatory activity with the AgNPs cream formulations. Formulations MS, NS and ES had 87.1, 90 and 100% anti-inflammatory activity, respectively in 4 h of treatment. The ES, MS and NS cream formulations had 100% healing in 4, 5 and 6 h, respectively, while only formulation EE had 100% healing in 6 h. Other cream formulations containing the extract could not achieve 100% healing in 6 h. The study established that Ehretia cymosa-synthesized AgNPs cream formulations had a faster healing ability compared with the positive control and Ehretia cymosa cream formulations.
Optimization of green synthesis of silver nanoparticles using Response Surface Method (RSM)
Authors: Ibrahim M , Agboola JB , Abdulkareem AS , Adedipe O , Tijani JO 
Published: June 2020

AbstractThis study is aimed at investigating the effect of synthesis parameters such as temperature, pH, volume of precursor and volume of extract on the crystal size of silver nanoparticles (AgNPs) synthesized via plant extract ofPiptadeniastrum africanum(African Oak) using 24factorial experimental design. The synthesized nanoparticles were characterized by X-ray Diffraction (XRD) and High Resolution Scanning Electron Spectroscopy (HRSEM) fitted with Energy Dispersive Spectroscopy (EDS). The optimum values of the synthesis parameters were found to be: pH 8, reaction temperature 35 °C, the ratio of the volume of extract to the volume of precursor was kept at 1:10 while silver nitrate (AgNO3)aqsolution was maintained at 1 mM concentration. The HRSEM and XRD analysis showed that the morphology of the nanoparticles is spherical with an average crystal size of 20-25 nm.
Preparation and characterization of nanosilica from sorghum husk ash by chemical method
Authors: Akaleme MC , Hassan IO , Olawuyi BJ 
Published: June 2020

Abstract
Extraction of nanosilica from Sorghum Husk Ash (SHA) was performed in this study by acid leaching method. Two methods of calcination was adopted (open and controlled method) in the production of SHA. Amorphous silica was produced by dissolving a quantity of SHA in hydrochloric acid solution which made the removal of heavy metals possible. The extracted/pure silica was rinsed with deionized water which lowers the pH to 7.0. The SHA silica was characterized using XRF, XRD and BET techniques. Silica and mineral contents of SHA were determined by XRF, while the X-ray diffraction patterns revealed the amorphous nature of extracted silica. Pure silica yield from SHA was 89.30%, while moisture content was 1.09%. The average particle size, BET surface area, pore volume, and pore diameter of SHA samples are 77.05 nm, 723.020 m2/g, 4.448e +01 cc/g, and 2.072e+00 nm respectively. The outcome of the research study reveals that the properties of the extracted silica satisfied all the requirements as established by relevant literature. Consequently, the high volume amorphous nanosilica with minimal mineral contaminants can be produced from SHA by the acid leaching method.
Thermophysical properties of nanoparticles in carboxylmethyl cellulose water mixture for heat enhancement applications
Authors: Akinpelu F O , Alabison R M , Olaleye O A 
Published: June 2020

Abstract
A successful drilling operation requires among others an effective drilling fluid which is also called drilling mud. Carboxylmethyl cellulose (CMC) which is a derivative of cellulose is commonly used because of its high viscosity. Its performance as a drilling fluid is limited at high temperatures and pressures due to its low thermal conductivity. A colloidal mixture of nanoparticles in CMC enhances the performance of the fluid. In this work, a comparison of the thermophysical properties of three metal oxides namely Titanium Oxide (TiO2), Aluminium oxide (Al2O3) and Copper Oxide (CuO) dispensed in Carboxylmethyl cellulose (CMC) water mixture in drilling operations were investigated at varying temperatures. Maximum of 0.4 volume fraction of the nanoparticles of each of the oxides in less or equal to 0.4 (≤ 0.4) of CMC concentration in water was considered. The governing equations obtained were simplified to a set of Ordinary Differential Equations which were solved numerically using Runge Kutta Scheme (order 4) along with shooting method. Results obtained showed that the metal oxides enhanced the heat transfer capability of the CMC water mixture. Besides, the conductivity enhancement is least with TiO2 in CMC water mixture and maximum with CuO in CMC water mixture. Viscosity and thermal conductivity increased with increasing volume fraction of the nanoparticles in the dispensing medium. These results were compared with existing literature and found to be in good agreement.