bluuebunny/crossref_metadata_2025_split huggingface dataset:
Calibration of sensors for measurement of high-density heat fluxes
Authors: Korablev V , Gorbunova A , Minkin D , Gumenyuk V , Gumenyuk O 
Published: December 2019

Abstract
Calibration methodology of heat flux sensors for measurement of high-density heat fluxes is suggested. The choice of reference emitter is substantiated and construction of Gardon’s heat flux sensor is described. The difference of suggested heat flux sensor is that it realize indirect measurement of heat flux density, which is based on registration of heating speed of cylinder with high heat capacity and of intensity of heat exchange with its sheath. Three cases of heat flux meter calibration methodology are described: calibration with help of black body model and assistive body with high heat capacity; with help of Stefan-Boltzmann law and black body model; with help of high intensive lamp and assistive body with high heat capacity. Experimental facilitate is suggested and it’s construction is described. Article presents also the results of experimental investigation for each case of calibration methodology. Presented calibration characteristics shows good accordance at wide range of temperatures and heat flux density.
Assessment of the maximum possible number of victims of accidents at hazardous production facilities for insurance purposes
Authors: Borisova M , Byzov A , Efremov S 
Published: December 2019

Abstract
In this article, we will familiarize with the currently used methods of assessing the6 maximum possible number of victims, their analysis and construction of algorithms, followed by a comparison of the results, on the basis of which the most optimal method of assessing the maximum possible number of victims will be chosen. An approach to assessing the maximum number of victims, based on the modeling of the territorial distribution of people within the zone of damaging factors. One of the complex and urgent tasks in the framework of the application of existing approaches to the assessment of the maximum possible number of victims for insurance purposes is the problem of modeling the density of the distribution of people within the zones of the affecting factors. The most adequate approach is based on the discretization of the density over the territory of the site by dividing it into areas, for example, by imposing a certain grid.
Production of formic acid from oil palm empty fruit bunch via dilute acid hydrolysis by response surface methodology
Authors: Harahap A F P , Rahman A A , Sadrina I N , Gozan M 
Published: December 2019

Abstract
Formic acid is the simplest carboxylic acid which has myriad applications in food, textiles, agriculture, pharmaceutics, and chemicals. Formic acid can be synthesized from hydrolysis of lignocellulosic biomass. Oil palm empty fruit bunch (OPEFB) is lignocellulosic biomass produced by oil palm industries to which cellulose content has potential for conversion into formic acid by hydrolysis. We investigated effects of three parameters in acid-catalysed hydrolysis reaction of OPEFB such as reaction time (20, 40, 60 minutes), temperature (140, 160, 180 °C), and H2SO4 concentration (0.3; 0.5; 0.7 M) and optimized them to obtain maximum formic acid concentration by using response surface methodology. Microwave assisted alkaline pretreatment of OPEFB sample under microwave radiation at 840 Watt for 9 minutes with 2% NaOH concentration was done prior to hydrolysis. The pretreatment was effective to reduce lignin content of OPEFB from 28.9% to 7.6%. The highest actual formic acid concentration we obtained from the experiment was 2725 ppm at 180 °C, 60 minutes reaction time, and 0.5 M H2SO4. While according to the polynomial model, the optimal condition for obtaining maximum formic acid concentration of 2890.673 ppm was at 180 °C, reaction time of 60 minutes, and 0.3 M H2SO4.
Optimization of microwave assisted dilute ammonia pretreatment of oil palm empty fruit bunch using response surface methodology
Authors: Rahman A A , Harahap A F P , Sadrina I N , Gozan M 
Published: December 2019

Abstract
Indonesia is the largest producer of palm oil in the world. Around one-fifth of the palm oil processing, weight end up as solid waste, named as oil palm empty fruit bunch (OPEFB). OPEFB is lignocellulosic biomass which contains cellulose, hemicellulose, lignin and minerals. The utilization of cellulose and hemicellulose requires pretreatment to open the lignin bond. This study examines the pretreatment of OPEFB using microwave assisted dilute ammonia. The OPEFB (30 - 40 mesh) was pretreated by ammonia solution with solid-liquid ratio of 1:10 under variated parameters such as ammonia concentration (7.5; 10; 12.5 %), microwave power (280; 560; 840 Watt) and reaction time (3; 6; 9 minutes).The hemicellulose content of all samples was characterized according to SNI 01-1561-1989. The results were optimized using response surface methodology with Box-Behnken model. The model showed that the highest hemicellulose content of 27.3% can be reached at pretreatment conditions of 665-Watt microwave power at 7.5 % ammonia concentration for 3 minutes.
Development of simultant quantification of non-ionic surfactant in chemical flooding using mobile 1H NMR
Authors: Putra I A , Alli Y F , Mujahidin D 
Published: December 2019

Abstract
The injection of surfactant is potential to be lost during the process due to the adsorption of surfactant into the core. It is therefore crucial to analyzed the concentration of surfactant before and after injection to the core. Many methods are developed for determining the content of surfactant using UV-Vis Spectrophotometer by utilizing the chromophore group of the chemical. In this study, quantification of nonionic surfactant that absent of chromophore group was performed using a combination of mobile Nuclear Magnetic Resonance (NMR) with Solid Phase Extraction (SPE). SPE was used to extract the samples that dissolved in water, whereas NMR was used to identify the levels of nonionic surfactants that dissolved in deuterized solvents. Internal standard chemical was added to the sample to verify the concentration of samples. As a stationary phase was SPE C-18 and eluent was methanol, ethyl acetate, and n-hexane. Furthermore, the SPE results were measured using mobile 1H NMR 43 MHz with selected solvents namely deuterated chloroform (CDCl3) and internal standard Dimethyl Formamide (DMF). Optimization results for determination of surfactant concentration up to 0.5% w/w was using the C-18 stationary phase, mobile phase methanol, ethyl acetate, and n-hexane.
Optimization of biodegradable plastic production using response surface methodology
Authors: Riza M , Syaubari S , Andriansyah A , Dewi R , Ernita L 
Published: December 2019

Abstract
Optimization is a searching technique for variable values considered optimum, effective and efficient, in order to reach the desirable results. An experiment was carried out to see the relationship between response variable and the independent variable. Several comparison tests can be obtained to gain the level that will create optimal response. The aim of this research is to apply the Response Surface methodology in order to obtain the optimum condition for the process variable in producing biodegradable plastic with lemongrass as antioxidant. Fixed variables in this research are tapioca starch, 69-79°C gelatinization temperature and the total mixture weight that consists of starch, poly(NIPAM) chitosan, lemongrass oil, acetic acid and water. The response variables are tensile strength and break of elongation of each biodegradable plastic that is produced. The application of response surface methodology on each biodegradable plastic can be used to obtain the independent variable that makes the optimal response variable. The predicted result of the optimum value for tensile strength and elongation of break lies on the composition treatment of Poly(NIPAM)-chitosan 0.35 grams, glycerol 3.5 grams and 36,55% lemongrass oil with tensile strength result of 3.98 MPa and elongation of break of 36.55%.
Cellulose extracted from water hyacinth and the application in hydrogel
Authors: Setyaningsih L , Satria E , Khoironi H , Dwisari M , Setyowati G , Rachmawati N , Kusuma R , Anggraeni J 
Published: December 2019

Abstract
This paper present the conversion of cellulose based on water hyacinth into hydrogel. The water hyacinth cellulose was prepared using acid-alkaline treatment and bleaching. The cellulose properties was optimized by varying the extraction condition such as solvent concentration and temperature. The analysis method of FTIR and XRD were used for characterizing the functional groups and crystallinity of cellulose. The effective condition of extraction were achieved at solvent concentration 17.5% w/w of NaOH, 8% v/v of H2O2 as bleaching agent and temperature of 80°C. The extracted cellulose was used to produced hydrogels using polyvinyl alcohol and glutaraldehyde as crosslinker agent. The research revealed that adding of glutaraldehyde with ratio 1:2 at 25°C give the highest water absorption capacity of 285%.
Evaluation of bus rapid transit (BRT) Trans Kota Tangerang service performance
Authors: Fauziah B , Barus L S , Sumabrata J , Martell-Flores H 
Published: December 2019

Abstract
The Tangerang City Government is one of the cities that has implemented BRT policy as public transportation since December 2016. This study aims to assess and analyze of BRT Trans Kota Tangerang service performance. The study uses quantitative methods, based on 5 dimensions of servqual, namely Tangible, Reliability, Responsiveness, Assurance and Emphaty, then assessed as referring to the standards of public transport services SK Dirjen no.687 of 2002, Minister of Transportation Regulation no. 10 of 2012, amendment no. 27 of 2015, ITDP 2016 BRT Standard. The purpose of this study was to analyze the level of importance and level of satisfaction of users towards the perceived performance of BRT Trans Kota Tangerang service. The service is assessed from the perceptions and expectations of BRT users. The results of the study show that the level of importance that must be prioritized is the tangible dimension of the item information on the stop service to be passed in the form of visual/audio in the stop functioning properly. BRT users are dominated by middle-class (captive) economic people who have no choice and depend on public transportation for daily mobility. BRT users were very satisfied with BRT Trans Kota Tangerang service performance.
Study flood routing Mamak Dam and evaluate the River Mamak to convey the flood design, Lombok, Indonesia
Authors: Sutapa I W 
Published: December 2019

Abstract
The purpose of this study was to determine the effectiveness of the Mamak Dam in controlling the volume of flooding and the capacity of the Mamak River to deliver the design flood. The investigation was carried out with a survey at the study site and collected secondary data. The methodology carried out was in the form of routing floods through reservoir by routing floods through the level pool routing. The profile of the Mamak River uses unsteady flow with the of HECRAS 4.1 software. The conclusions from this study are: 1). Mamak Dam can extend the peak flood time from 5 to 6 hours to 10 to 12 hours; reducing the flood of Mamak Dam between 107.51 m3/s to 232.96 m3/s or equivalent to 60.44% to 41.75% according to the return period of the flood discharge. 2). The flood discharge that comes from the overflow of the Mamak Dam is not able to be fully flowed by the Mamak River resulting in flooding, both annual flooding and for 25 years return period. 3). To overcome this flood, the flood dikes planned to vary in height from 0.81 m to 3.2 m.
Experimental study of variation of models and layers in bamboo’s perpendicular connection to fiber with fiber-reinforced polymer (FRP)
Authors: Kuncoro H B B , Awaludin A , Triwiyono A , Darwis Z 
Published: December 2019

Abstract
Bamboo is a natural material that is a great demand in the field of simple construction, so connection is one of the things that need to be considered. Research on bamboo connection has been carried out using bolts, steel gussets with wood or mortar fillers, and Fiber Reinforced Polymer (FRP). The use of FRP has advantage since FRP is light, strong, and has adequately high stiffness. This research uses two types of perpendicular connection to fiber (TLS) with two layers methods, different number of layers, and two bolts which function as lateral connection. The used connection testing method is quasi-static monotonic loading. From the results of the study it is found that TLS01-2L increased the maximum load by 80,05 percent compared to TLS01-1L, while in TLS02-2L there is a decrease of 20,65 percent compared to TLS02-1L. In addition, the average ductility value is 2,63 for TLS01 and 2,11 for TLS02 so the stiffness value only reaches 1,75 for TLS01 and 1,97 for TLS02. It can be concluded that the numbers of layer do not affect the strength of the TLS connection but rather the FRP bonding area and the windings method which influences the strength and stiffness of the connection.
Stabilization of clay using slag and fly ash with reference to UCT value (Case study: Jalan Kadusentar, Pandeglang District-Banten)
Authors: Fathonah W , Intari D E , Mina E , Kusuma R I , Mahfudoh  
Published: December 2019

Abstract
Expansive soils have low soil bearing capacity so that’s causes often problems in buildings. One ways to repair soil bearing capacity is improve the strength of original soil with chemical stabilization methods using slag and fly ash. The research goals were to find out the effect of adding slag and fly ash with reference to unconfined compressive strength value and physical properties of the soil before and after stabilizing with slag (10%, 20% and 30%) and fly ash (20%) and to know classification soil on jalan Kadusentar, Pandeglang District - Banten based on USCS classification. The results of this study obtained original soil types including the MH category is non-organic clay with high plasticity. The UCT value of original soil was 1, 407 kg/cm2. Addition of slag and fly ash increased the value of unconfined compressive strength and can improve the physical properties of the soil by decreasing the value soil plasticity index. The maximum UCT value is the percentage of 20% fly ash and 10% slag of 8, 393 kg/cm2 including hard consistency with unconfined compressive strength values greater than 4 kg/cm2 with curing time for 14 days.
Clay stabilization using flyash and carbide waste and its effect on the value of unconfined compression test (Case Study of National Park Ujung Kulon Road in Pandeglang Regency)
Authors: Kusuma R I , Mina E , Fathonah W , Mubtady I 
Published: December 2019

Abstract
Clay is a type of soil with high pore water characteristics which causes its problem for pavment. Ujung Kulon national Park road in Sumur Subdistrict, Pandeglang Regency is a road with clay soil type, so the road is often demaged. To overcome this its problem it is necessary to add strength and improve its bearing capacity.The water content of the sample taken from the compaction of the original soil standart proctor. The variation of fly ash mixture that used is 0% and 20% and carbide waste with a mixture of 0%, 5%, 10%, 15%, 20% and 25%. Based on the result, the soil which stabilized by fly ash and carbide waste in the variation of 0%, 10%, 15%, and 20% showed the increase of the value of the soil bearing capacity, and decrease the velue of soil plasticity index.the largest of UCT (Unconfined Compression Ssrenght) value result for soil sample mixed with 20% fly ash and 20% carbide waste contain by curing for 28 days in amount of 5,51 kg/cm2.
Experimental study of crack depth measurement of concrete with ultrasonic pulse velocity (UPV)
Authors: Baehaki  , Andi M , Yohanes G R 
Published: December 2019

Abstract
This research was conducted to know the effect of reinforcement and distance tranducer effective in detecting the depth of concrete cracks. The test specimen used is a 15x15x60 cm3 concrete beam with a concrete quality of 19 MPa. The test material is made of artificial cracks as depth as ± 2cm, ± 4cm, ± 6cm, and any fractured variation made 3 pieces of speciment, in addition to the test object was given a reinforcement of Ø8 mm which is placed horizontally in the center of the beam at a depth of 4 cm from the concrete surface. This testing using indirect method with variations of tranducer distance of 3cm, 6cm, 9cm, and 12cm. The study concluded that the accuracy of UPV testing results was influenced by reinforcement and distance tranducer. Test speciment with an artificial crack depth of ± 2cm and ± 4cm have a greater reading result with a relative error of 36.8% and 16.5%, while the test object with an artificial crack depth of ± 6cm has a smaller reading result with a relative error ± 3.4%. In addition, it obtained an effective tranducer distance of 12cm with an accuracy of 85.4%.
Experimental evaluation of real-time packets transmission during vertical handover process on mobile ipv6
Authors: Praptodiyono S , Pramudyo A S , Irfan A , Santoso M I , Osman A 
Published: December 2019

Abstract
The Internet user is growing incrementally over the world. Most of them use mobile devices to connect to the internet. They aim to stay in connection every time and everywhere. Thus, they use mobile IP communication to get always connected to the internet while they move to another place. Fortunately, the telco infrastructure has reached many places in the world. Also, the video file transmission is now becoming a new trend, especially a short movie transmitted via social media. The huge of the internet connection caused the scarcity of Internet address. It was anticipated by introducing IPv6 that supported the mobility by presenting the Mobile IPv6. This paper evaluates the performance on the MIPv6 mechanism on transferring video when the user moves to another place that usually different network infrastructure. Therefore, the vertical handover does not disturb the quality of the video transmission. The experimentation results show during the vertical handover, the addition delay and packet loss is low especially when the network is overlap. If the network is not overlap, the main factor for the handover delay and packet loss is the distance between home network and a new network.
Integrated micro tesla magnetic sensor for detecting photovoltaic cells failure
Authors: Alfanz R , Okazaki Y , Ikegami T , Deng Y 
Published: December 2019

Abstract
Recently more attention on the failure of PV systems has been paid and more reports have been found in PV related papers. Various methods to detect failure of PV module have been developed; They are visual method, I-V characteristic method, electroluminescence (EL) method, UV fluorescence method, signal transmission method, IR thermography method, photoluminescence (PL) method. However, each method has some limitations. Developing a new alternative diagnostic method of PV cells will be required for efficient operation of PV system. The proposed method uses μ-tesla magnetic sensor (MI-CB-1DM) to detect failure in a PV cell. The experimental design carried out in this study covered two stages. In the first stage, we developed a method for detecting faults in PV cells using the μ-tesla magnetic sensor method. In this second stage a calculation will be made to determine the current level due to the failure of the PV cell. The results show that Bx at the lower busbar in the degraded module has smaller magnetic density than the upper busbar. No obvious difference can be seen in the Bx and By profiles between the normal and degraded cells.
Design of linked sirens for tsunami early warning system using telecontrol system (case study at PUSDALOPS PB BPBD of Cilegon city)
Authors: Wiryadinata R , Pratama A , Fahrizal R , Firmansyah T , Widyani R 
Published: December 2019

Abstract
Cilegon is an industrial city located near and facing the Megathrust Sunda Strait Subduction Zone. Around the Sunda Strait is Mount Anak Krakatau which is the most active mountain in the world. So that, it has the potential for a tsunami to cause a catastrophic failure of technology along the coast of Cilegon. In this study, TEWS (Tsunami Early Warning System) is made in the form of sirens that are connected in parallel (linked sirens), can be controlled from the PUSDALOPS room of BPBD in Cilegon City. Communication system used by GSM and amateur radio. The test is carried out using a BPBD repeater with a radius of 146 km. The results of the study prove that the delay in the GSM communication system is 14.5 seconds, whereas the delay in the RF system is 6.4 seconds.
Thinning process algorithms for compound poisson process having nonhomogeneous poisson process (NHPP) intensity functions
Authors: Abdullah S , Ikhsan F , Ula S , Rukmayadi Y 
Published: December 2019

Abstract
One stochastic process that is often used to model real phenomena is the compound Poisson process (CPP). CPP is a process in which a component in the process of the events occurred is assumed to be a Poisson process with a certain intensity function (homogeneous or nonhomogeneous). Thinning process algorithm is usually used to generate events that occurred in the Poisson process, but not yet in CPP. This study aims to find out the algorithm to produce CPP which has the function of Poisson nonhomogeneous (NHPP) intensity, where in addition to knowing the process of events that occur, it also takes into account the extent of the consequences of these events. The value of the load caused by the Poisson process is assumed to be a family of i.i.d random variables and the variables are also independent of the Poisson process. The results of this study have obtained the thinning process algorithm and its generalizations for compound Poisson process having nonhomogeneous Poisson process (NHPP) intensity functions. This algorithm is the result of theoretical development and analysis of computational simulations that can be applied in various fields of science such as the analysis of reliability and risk models.
Text editor application to automate the format of writing a final project based on java programs
Authors: Masjudin  , Lufianawati D E T 
Published: December 2019

Abstract
Final project is a prerequisite that must be taken by students to get a Bachelor or Master Degree. Final project contains the results of research made in a specific format as reporting the research process to the institution. Each institution has a standard format for the final project or thesis writing rules which are usually written in the instructions for writing a thesis. Institutions usually provide writing templates to follow, but because the templates only make a number of important parts and are still manual, the format of student writing often changes and is not uniform with other students or some are deviant and not in accordance with the standard written format. This study designed a text editor application to help students or researchers so that it was not too problematic in the writing format. This application is based on a graphical user interface, making it easier to operate. The rules in the program are made to automate the writing entered to produce written output in accordance with the format specified by the institution. With this system, student or researcher will be easier in writing the script according to the standard of writing and get a final project or thesis report in a uniform format.