bluuebunny/crossref_metadata_2025_split huggingface dataset:
Identify factors that caused false and violation by motorcycle rider
Authors: Lady Lovely , Try Mulyo Teguh , Kumino Kulsum 
Published: December 2020

Abstract
A motorcycle is a vehicle that is widely used by Indonesia community. However, increasing of motorcycle users were not followed by a good driving behaviour, the increasing was directly proportional to increase in the number of traffic accidents. The motorcycle is one of the dominant causes of the traffic accident in Indonesia. This research aims to identify the causes of the deviation and violation in driving that conducted by motorcyclists. The characteristics of driving and the type of deviation committed by motorcyclists collected using Driver Behavior Questionnaire (DBQ). The respondents were motor drivers who have a motorcycle driving license (SIM) in 8 districts in Cilegon. The data processing used the factor analysis method to identify the factors that caused traffic deviation by the motorcyclists. This research find seven factors that caused the deviation and violation by drivers, the dominant factor that explained 16.857 % deviation in riding is lack knowledge of traffic rules. Next factors were vehicle speed exceeds the threshold, the emotions, hasty, careless, not paying attention to the health, and not focus in driving.
Selection of IoT-based technology for electric smart meter on PLN Disjaya
Authors: Mulyono Adi , Farizal F. 
Published: December 2020

Abstract
With so many platforms or protocols developed by several organizations or institutions, such as LoRa, NB-IoT and SigFox that have their own advantages and limitations. While it takes a large and long-term investment to deliver IoT technology. Apart from that, losses caused by the use of conventional meters on electricity customers cause a decrease in income by electricity supply companies. In this study aims to choose the internet-based technology of things for electricity smart meters in the PLN Disjaya region between three LoRa, NB-IoT and Sigfox technologies. This research is doing network design, coverage analysis, capacity analysis and network utilization, cost benefit calculation and analysis, data rate speed and proprietary. From the analysis results obtained SigFox superior in terms of coverage, capacity and network utilization, cost benefits (NPV, IRR, Payback Period, BCR, ROI), LoRa superior in terms of proprietary and NB-IoT superior in terms of data rate speed.
Productivity measurement using Objective Matrix: case study in plate mill
Authors: Wahyuni N , Alya R 
Published: December 2020

Abstract
A decline of production level in December 2018 requires an evaluation. Productivity measurement is required to calculate performance. The purpose of this study is to measure the level of productivity using the objective matrix (omax). There were four steps to perform Omax. First step is select performance criteria, second is establish performance scales, third is rate the relative importance of the performance criteria, and the last is calculate the team productivity indicator. There were five ratios that become performance criteria, namely actual production compared to the target, material consumption, available time, makeup water consumption, and electricity consumption. The weight of each ratio is known in sequence from ratio 1 to ratio 5 were: 30%, 20%, 30%, 5%, and 15%. The performance index obtained the 3rd week has the highest productivity value, while the 4th week has the lowest productivity value, but the value is higher than standard value. From the value per ratio, we learned the ratio 1 has a fairly good performance, while the ratio 3 performance is considered less, because it is in the red zone.
Designing a computerization management production system in PT Akrilik Kurnia Kencana using barcode
Authors: Silalahi Rudy Vernando , Ishak  , Marciello  
Published: December 2020

Abstract
As technology develops, the production process of each industry also develops to become more sophisticated and modern. Barcode is a form of technological development in the production process and is useful for manufacturing companies to be able to store data so that it can be well integrated in a system. PT Akrilik Kurnia Kencana (AKK) is one of the companies engaged in manufacturing EPS (Expanded Polystyrene) and has a problem in finished goods warehouse where the company does not have a good system due to warehouse capacity inadequate. This study aims to identify current system implemented at PT AKK and develop a new system to solve the problems experienced by PT AKK. Data collection is done by the method of observation and interviews with the company to get the necessary data. After being collected, the data will be processed in such a way that it can be interpreted properly. Then, the data will be used as an input in designing a production management system-based application using the System Development Life Cycle (SDLC) waterfall model. By using this system, users can monitor the presence of each finished goods that has been produced and enter the warehouse through the information contained in the barcode.
The ergonomic factor application for improvement of performance office staff
Authors: Hernadewita  , Hendra  , Kristianti R. , Asih I. , Dhimas S. , Yuliani E.N.S. 
Published: December 2020

Abstract
Comfortable workplace, healthy and safely is the goal of implementing occupational safety and health requirements. Ergonomics is one of the factors that can affect employee productivity. Achieving harmony between labor, equipment, environment, work methods and work processes is the most important application of ergonomics. The purpose of this study is to investigate the improvement of working conditions through the application of ergonomics in the workplace. Ergonomic testing is carried out using the Rapid Upper Limb Assessment (RULA) analysis method to evaluate worker posture on work machines or operating systems and to investigate reduction in upper extremities and Ergonomic Factor Policy Identification (SHORT), which is an ergonomic evaluation method that focuses on frequency, duration, weight and posture to identify ergonomic hazards faced by everyday workers using an assessment system. The results of ergonomic application analysis are on average at a low risk level. Improvements can be made to reduce the level of risk experienced by employees in accordance with ergonomic standards, including improving the design of tables and chairs, adjusting work positions, avoiding odd work positions, stretching muscles while doing work at the computer.
Design of warehouse model with dedicated policy to minimize total travel costs: a case study in a construction workshop
Authors: Irman Ade , Muharni Y , Yusuf Andri 
Published: December 2020

Abstract
Warehousing is one of the many important activities in a company. One of the important things in managing the warehouse is how to store finished or semi-finished goods, raw materials, spare parts, equipment, or other goods in the right location to minimize total travel costs inside the workshop. In a workshop construction company usually uses a raw material in a big size and the cost of moving a big size usually need a high cost also. Dedicated storage policy becomes an option to make a model where the material should be store inside the warehouse. A mathematical model as an Integer Linear Programming problem used to model the case problem. LINGO 17 used to solve the mathematical model in this research. The model can find the optimal solution in a fast time. The minimum total travel cost in this research resulted from LINGO is IDR 17.326.320.000. Minimizing warehouse operation cost will also minimize the total company operation cost, mean higher profit will be got by the company.
Analysis of covariance for completely randomized design (case study: the life times of cutting tools used with lathes
Authors: Arina Faula , Ulfah Maria , Lintang Trenggonowati Dyah 
Published: December 2020

Abstract
Analysis of covariance (ancova) is a blend of regression and analysis of variance (anova) used for upgrade precision of an experiment. Ancova can be used for all experimental design including completely randomized design. The completely randomized design is the response are randomly intrusted to treatments. Application ancova on completely randomized design in the manufacture is given to observe the effect of types of cutting tools of lifetimes of cutting tools . In this experiment covariate variable is lathe speed. Lathe speed affects tool life meaning that the involvement of the covariate variables in the covariance analysis model is appropriate. From the covariance analysis, it is also found that tool type influences tool life. The coefficient of variance in ancova is lower than anova. This proves that the ancova has a better level of precision than anova, so that ancova is more appropriate to use than anova.
Fabrication of fluorine-doped tin oxide by using Indonesian local stannic chloride precursors with spin coating method
Authors: Yustanti E , Fahmi G , Lalasari L H , Arini T , Andriyah L , Subhan A , Firdiyono F , Trenggono A 
Published: December 2020

Abstract
Fluorine-doped tin oxide is a thin layer of transparent conductive oxide, which has a function as a semiconductor. Fabrication of fluorine tin oxide from this research was expected to replace indium-doped tin oxide. Indium-doped tin oxide function as a commercial transparent conductive oxide. The raw material of indium was limited, so the price of indium is higher than fluorine. The material used are Indonesia local tin (IV) Chloride, ammonium fluoride, and methanol. Conductive liquids has made by the sol - gel method. Sol gel liquids doped with ammonium fluoride to make a high conductivity. The transmittance value at the 1, 2, 3, 4, and 5 minutes deposition time were respectively 69.7; 43.6; 14.4; 14.1 and 34.7%. In this research, spin coating method under 3000 RPM on fix substrate temperature of 300°C. The results of the experiment shows, increased deposition time, make the thickness of the layer increased while resistivity and transmittance decreased. The optimum parameter for glass conductivity fabrication were obtained at 4 minutes time deposition, substrate temperature at 300°C has a resistivity of 125 k Ω, transmittance 14.1% and band gap energy 2.48 eV.
The potential of attached growth of microalgae on solid surface for biomass and lipid production
Authors: Chuah Sze Yu , Dasan Yaleeni Kanna , Cheng Yoke Wang , Lim Jun Wei , Ho Yeek Chia , Tan Inn Shi , Yew Foo Henry Chee , Kiew Peck Loo , Leong Sim Siong , Lam Man Kee 
Published: December 2020

Abstract
Microalgae cultivation is usually performed via suspended growth system; however, the subsequent harvesting technologies are either costly or energy intensive. Herein, attached growth of Chlorella vulgaris was investigated using low-cost supporting materials (polystyrene foam and cotton duct) to ease the microalgae harvesting process. Cotton duct served as a better supporting material than polystyrene foam as it promoted microalgae attachment. Evidently, the attached cultivation performed on cotton duct granted higher biomass yield (16.40 g/m2) than the attached cultivation with polystyrene foam (11.70 g/m2) after 14 days of cultivation. From the studied range of 0.1 – 0.3 v/v%, the optimal inoculum concentration for the attached cultivation of C. vulgaris on cotton duct was 0.3 v/v%. After 14 days of cultivation, the optimized attached cultivation of C. vulgaris was capable to produce a biomass yield of 18.2 g/m2. The lipid content of dried microalgae from optimized attached cultivation (43 wt%) was higher than that of suspended cultivation (32.7 wt%).
Hydrothermal Treatment of Palm Oil Mill Effluent (POME) under Oxidative and Non-oxidative Conditions
Authors: Lee Zhan Sheng , Cheng Chin Kui , Chin Sim Yee 
Published: December 2020

Abstract
The performances of oxidative (OHT) and non-oxidative (NOHT) subcritical hydrothermal treatments of palm oil mill effluent (POME) were investigated. The experiments were performed in a pressurised 500 mL-autoclave at different temperature (493 K – 533 K) and reaction time (2 h – 8 h). At 533 K and 8 h, the OHT reaction showed the highest removals of 5-day biochemical oxygen demand (BOD5) and chemical oxygen demand (COD), recording 87.30% and 71.23% respectively, with the pH of liquid product attained 6.5 from an initial value of 3.5. The reduction of COD and BOD5 in NOHT was lower than that in OHT, which were 61.43% and 68.02%, respectively. The mechanism of OHT reaction was via the free radical’s pathway. In contrast, the organic compounds originally present in POME degraded into water-soluble products, accompanied by deoxygenation that consisted of decarboxylation and dehydration during the NOHT.
Hydrogen sulfide reduction by conductive concrete with MFCs strain
Authors: Fukushima M , Promunuan K , O-Thong S , Suzuki T , Imai T 
Published: December 2020

Abstract
The objective of this study is to reduce the production of Hydrogen sulfide (H2S) in sewer pipe by using conductive concrete and electricity-producing bacteria (EPB). This work was mainly focused on evaluating the effect of inoculation of EPB isolated from sewage sludge from municipal wastewater treatment plant for decreasing production of H2S. The experimental results showed that inoculation of EPB could decrease the concentration of H2S, indicating that produced H2S in an anaerobic sludge sediment layer (bottom of sewer pipe) was biologically oxidized by EPB. These results demonstrated that conductive concrete can provide an electron pathway from anaerobic sludge sediment in the bottom of sewer pipe to oxygen dissolved in surface water, and as a result the electron generated from hydrogen H2S oxidation in anaerobic environment was accepted by oxygen via conductive concrete.
The influence of calcination temperature on (photo)electrochemical property of TiO2 prepared by the sol-gel method
Authors: Poo-arporn Yingyot , Luengprasert Kanokrat , Tonlublao Surangrat , Loiha Sirinuch , Ruangvittayanon Anuchit , Poo-arporn Rungtiva P. 
Published: December 2020

Abstract
In this work, titanium dioxide (TiO2) was successfully synthesized via the sol-gel method using Titanium (IV) isopropoxide as a precursor. The mixture was heated to 115°C to obtain the solid powder of TiO2. Ti K-edge XANES measurement was performed to determine its structure. Three pre-edge peaks at energy levels between 5460-5480 eV were clearly observed. These features correlated to 1s→d electronic transition in the distorted-octahedral structure of anatase TiO2. The in situ XANES experiment at 700°C revealed no phase transformation from anatase to rutile. There was no characteristic of the rutile phase on the XRD pattern of TiO2 calcined at 700°C. This result confirmed the stability of anatase. SEM images revealed the circular shape of TiO2 particles with a diameter of around 50 nm. The highest (photo)electrochemical activity of TiO2 was obtained at the calcination temperature of 300°C as investigated by a cyclic voltammetry.
Monitoring system for 5-kW Solar pumping system
Authors: Phetsong Sivapong , Somasri Patiwat , Hudakorn Teerasak , Weerayuth Nantawatana 
Published: December 2020

Abstract
Solar pumping system has been used extensively in agriculture and irrigation system. It is an old pumping system replacement because the old pumping system requires more maintenance and replacement. This article is reported on the study and development of the solar pumping system and the remote monitoring system. The system consists of the 5-kW solar panel and the 2.2kW submersible pump with a solar pump controller. It has been installed in the rural area which cannot easily accessible from the city. The monitoring system has been developed by integrating the electrical power modules, water measurement modules, weather measuring modules, and main controller modules. All of them communicate over the RS485 bus. The main controller unit integrates with software, gather all data from every modules and display on touch screen. It also makes data post-processing and records it on a USB drive and prepare data protocol for sending via communication modules. The system can work properly but it still need some further development in the future.
Extraction of lutein from marigold flower using solvent extraction
Authors: Kasemwattanarot P , Chuachang S , Ramakul P 
Published: December 2020

Abstract
The solvent extraction of lutein from marigold flowers was studied. The influence of three variables namely, the extraction temperature, ratio of the marigold flowers in the solvent, and ratio of ethanol in the solvent were investigated by a central composite design (CCD). The relationship between the yield and these variables was obtained by a regression model. The optimum condition was also determined. The highest yield for lutein (91.4%) was predicted by the regression model, which showed good agreement with the experimental results.
Zinc electrodeposition of mild steel in the presence of ginger, pomegranate and celery extracts
Authors: Loto Roland T. , Loto Cleophas , Akinyele Marvellous 
Published: December 2020

AbstractZn electrodeposition on low carbon steel (LCS) within an acid bath composed of ZnCl2, H3BO3and KCl solution at predetermined quantities of ginger, celery and pomegranate extracts with respect to plating time was evaluated. Results obtained showed the plant extracts significantly influenced Zn electrodeposition on LCS with respect to concentration. Ginger extracts induced the highest Zn electrodeposited with values between 0.0867 g and 0.1219 g. Comparison of corrosion resistance between the non-plated and Zn electrodeposited LCS (with and without extract additives) were determined with potentiodynamic polarization method. Results showed ginger, pomegranate and celery extracts enhanced the corrosion resistance of Zn electrodeposited LCS with highest corrosion rate values of 2.48 mm/y, 2.78 mm/y and 1.95 mm/y compared to 7.96 mm/y for non-plated LCS and 6.58 mm/y for Zn electrodeposited LCS without plant extracts.
Foamability of Natural rubber (NR)/Poly(butylenes adipate-co-terephthalate) (PBAT) Thermoplastic Vulcanizate with OBSH as a blowing agent
Authors: Srikham J , Thongpin C 
Published: December 2020

Abstract
Natural rubber, NR, is bio-based material that is generally used for foam preparation as it results in good softness and high resilience. Among many applications, NR foam/sponge is often used for shoe sole either insole or outsole. Likewise, rubber sponge is very important for healing Plantar Fasciitis as rubber sponge is soft, elastic and capable in impact absorption. NR is in fact non-biodegradable resulting in increasing of waste which is a hot issue at present. Huge interest has paid attention in using biodegradable polymer in various products and applications. Polybutylene adipate-co-terephthalate, PBAT, is one of many bioplastics that possesses biodegradability characteristic. It also shows excellent flexibility similar to elastomer. Many attempts have been focus on blending this polymer to improve toughness in brittle plastic. Our research is aimed to incorporate PBAT into NR and producing thermoplastic vulcanizate. NR/PBAT TPV foam is then produced using 4,4-’Oxybis-benzenesulfonyl hydrazide (OBSH) as a blowing agent. The ratios of NR/PBAT are varied as follow: 70/30 65/35 60/40 55/45 50/50 45/55. The polymer blends were mixed on a two-roll mill with the formulation of ZnO 3 phr, luperox 101 1 phr and OBSH 10 phr. Compression molding was used in order to prepare rubber sponge at 160 °C, 1500 psi. Cell size, cell size distribution, density and compression set of NR/PBAT foam were investigated.
Corrosion inhibition effect of 1-thia-3-azaindene on type 304 austenitic stainless steel in 3M H2SO4 solution
Authors: Loto R T , Loto C A , Awodein F 
Published: December 2020

Abstract
Corrosion inhibition of 1-thia-3-azaindene (T3A) on type 304 austenitic stainless steel was studied in 3 M H2SO4 solution at specific concentrations by potentiodynamic polarization. Results showed T3A performed effectively with optimal inhibition efficiency of 92.58% at 1.5% volumetric concentration with the corresponding corrosion rate of the steel at 0.53 mm/y compared to 6.72 mm/y in the acid solution without T3A compound. Inhibition performance increased with inhibitor concentration. T3A exhibited anodic type chemisorption inhibition according Langmuir, Temkin, Frumkin and Freundlich adsorption isotherms with correlation coefficient generally above 0.9. Polarization plots showed significant passivation behaviour after metastable pitting activity before breakdown at pitting potential signifying extensive surface coverage of the steel. The cathodic portion of the polarization plot showed H2 evolution and O2 reaction mechanisms are under activation control.
Corrosion inhibition study and statistical data of thymus mastichina and alicium verum oil on low carbon steel in dilute H2SO4 and HCl solution
Authors: Loto R T , Ororo S 
Published: December 2020

Abstract
Data on the corrosion inhibition of thymus mastichina and alicium verum (TA) on mild steel in H2SO4 and HCl solution was evaluated by coupon measurement and statistically through analysis of variance. The inhibition performance of TA was observed to decrease significantly with exposure time at 1% TA, beyond which the extent of decrease reduced. In HCl solution TA inhibition efficiency varied significantly with exposure time from 1%-4% TA concentration. Data showed TA effectively inhibited the mild steel after 1% concentration with optimal value of 81.24% and 5% TA concentration. TA performed poorly in HCl with optimal value of 68.33% at 5% TA concentration. Standard deviation showed variation of TA inhibition efficiency from mean inhibition value was significant at 1-5% TA concentration in HCl and at 1% TA concentration in H2SO4. 88% of TA inhibition data were above 70% inhibition with respect to exposure time and TA concentration at margin of error of +0.09% compared to 53% in HCl at margin of error of +0.1%. Analysis of variance showed TA concentration is the dominant source of variation responsible for the inhibition performance of TA with statistical relevance value of 88.83% while TA concentration and exposure time were both influential in HCl solution with values of 67.96% and 26.97%.
Influence of Annealing Temperature on Structural Properties and Stability of CsPbBr3/TiO2 Core/Shell
Authors: Nuket Parina , Kida Tetsuya , Vas-Umnuay Paravee 
Published: December 2020

Abstract
Although all-inorganic CsPbBr3 perovskites quantum dots exhibit an excellent photophysical properties, which could be applied in various applications, they still suffer from poor structural stability owing to environment factors. Therefore, TiO2 was coated on the CsPbBr3 QDs as a protecting shell to enhance their stability. Moreover, anatase phase of TiO2 shell was obtained by annealing at more than 300°C due to its most effective electron extraction properties among other crystalline forms of TiO2. However, the CsPbBr3 QDs can be degraded under high temperature. Herein, the annealing temperatures ranging from 300-500°C were optimized to obtain the anatase TiO2 shell and good crystallinity of CsPbBr3 QDs core. The morphology and optical properties of CsPbBr3 QDs, CsPbBr3/TiOx and CsPbBr3/TiO2 were studied by using transmission electron microscope (TEM), photoluminescence (PL) measurement and UV-Visible spectroscopy, respectively. Finally, the CsPbBr3/TiO2 annealed at the optimum temperature was compared with the bare CsPbBr3 QDs to prove the enhancement of their structural stability under ambient air by using X-ray diffraction (XRD).