Indonesia Conference Directory

Corresponding Author
Maria Ulfah

Institutions
Sultan Ageng Tirtayasa University

Abstract
Lean six sigma used to identify and eliminate non-valued waste along with continuous improvement of 6 sigma performance targets. Multi Attribute Failure Mode Analysis (MAFMA) is a method used to overcome the weaknesses in FMEA by considering the economic aspect. PT X is the largest steel industry in Indonesia. During the production process, still have large quantities of waste defect. The purpose of this research is to determine the waste that occurs in the production process, determine the characteristics of deformity or CTQ, determine the sigma value, determine the factors that caused the failure of the production process, and determine the proposed improvement to minimize the failure of the production process. The most dominant types of defects are serrated edge, wavy edge, poor cleanliness, pick up, edge crack, ripple edge, and bad weld. The sigma value of coldrolled coil product is 4,131 which is included into the industry average of USA (± 4σ). Factors that caused cold rolled coil production process failed based on criteria severity, occurrence, detection, and expected costs by Fuzzy Analytical Hierarchy Process (F-AHP) is material imported from outside with a total weight of 0,087. Proposed improvements done to minimize failure in cold rolled coil production processes are doing trial for products from HSM factory to test or know the slab specifications related to the chemical constituents of steelmaking and adjusting the format (such as thickness, length, width) and steel specifications to corresponding.

Keywords
Defect, failure, production process, waste

Topic
Industrial Engineering

Link: https://ifory.id/abstract/bJCLFEDpGKta

Corresponding Author
Baehaki -

Institutions
a) Department of Civil Engineering, University of Sultan Ageng Tirtayasa, Banten, Serang, 42435, Indonesia
*andi_made[at]yahoo.com

Abstract
Ultrasonic Pulse Velocity (UPV) test includes a simple Non Destruction Test (NDT) testing method, by utilizing ultrasonic waves. In the implementation of UPV testing with direct, semi-direct, and indirect methods give a quick result of different pulse velocity, with the same quality of concrete. Therefore, this study was conducted to get the correlation and correction value of all three testing methods with PUNDIT Lab+ tool on reinforced concrete. The study used a speciment of concrete beams 15x15x60 cm3 with concrete quality K-275, K-250, K-225 each as much as 3 specimen. The average value of the measurement result with the direct UPV method is 12%, 7% and 5% less than the average value of the semi-direct method of UPV direction vertically, the semi-direct method of the UPV direction horizontally, and the indirect method UPV. Conversion of the measurement results for the direct UPV method of the semi-direct UPV vertical direction, semi-direct UPV direction horizontal and indirect UPV can use the regression equation Vd = 0.2462 Vsd-v + 3192, Vd = 0.1073 Vsd-h + 3923.8 and Vd = 0.0195 Vin + 4341.8.

Keywords
UPV Methods, NDT, PUNDIT, Quallity of Concrete

Topic
Civil Engineering

Link: https://ifory.id/abstract/XhbdENVMzw9c

Corresponding Author
Romi Wiryadinata

Institutions
University of Sultan Ageng Tirtayasa

Abstract
Non-Destructive Testing Ultrasonic is needed for structural testing in steel, testing is carried out to determine the condition of damage or hole defects due to corrosion and long-term use. The aims of this research to create a data acquisition system using Continuous Wavelet Transform and the results of the acquisition data are used to find the position of hole defects in steel. The part of data acquisition were pulse generator and amplifier. The signal from the pulse generator is used for input on an ultrasonic transducer with an amplitude of 60 Volts, a PRF of 1 kHz, and a pulse width of 1 micro second. Meanwhile, the gain in the low noise amplifier is 28 dB, its function as a signal receiver from an ultrasonic transducer. The output signal from the ultrasonic transducer is processed using CWT to obtain the coefficient of approximation. The position of hole defects is based on the delta wave from the initial pulse and echo. therefore, hole defects are indicated by a reflection wave defect. The acquisition system in this study was able to identify the location of hole defects in steel. The average depth can be detected by 0.79 cm with an error of 0.244 percent.

Keywords
Data Acquisition, Steel Defect Detection, Continuous Wavelet Transform

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/Lcf4A8Pnpv6W

Corresponding Author
Afifatul Jannah

Institutions
Chemical Engineering Department, Industrial Technology Faculty, Sepuluh Nopember Institute of Technology, Surabaya, Indonesia

Abstract
Rice bran has a high content of antioxidants and vitamin E so that it can reduce cholesterol levels, become an antidote to free radicals, and is good for skin health. This rice bran can be processed into edible oil, but too high a level of FFA can disrupt the quality of crude rice bran oil as it causes a rancid odor. Deasidification is a process to eliminate high levels of Free Fatty Acid (FFA) in crude rice bran oil (CRBO). There is a biological deasidification process using enzymes, but enzymes are still considered too expensive to use. The chemical and physical deasidification process is a commonly used process. The chemical deasidification method is carried out by adding alkaline solutions to oils containing low FFA with the advantage of leaving FFA of 0.5-2%, but can significantly eliminate the content of neutral oils and bioactive components such as oryzanol. Physical deasidification using distillation requires high energy, although the results obtained are quite good. Another physical deasidification method being developed is liquid-liquid extraction (LLE) which can minimize energy consumption levels and lose bioactive components. Physically deasidification using the liquid-liquid extraction method will be applied in this study using green solvents which are non-toxic, non-volatile, non-flammable, recyclable. The green solvent used is Deep Eutectic Solvent (DES) from Choline Chloride - Ethylene Glycol with a ratio of 1: 2 molar ratio and Natural Deep Eutectic Solvent (NADES) from Betaine Monohydrate - Glycerol with a 1: 8 molar ratio. The purpose of this study is to study the DDRBO deasidification process using DES and NADES in single extraction and multiple extraction, the effect of DES and NADES on the rate of FFA and recovery γ-oryzanol at each stage, and the effect of initial FFA levels (5%, 10%, 20 %, 30%, 40% and 60%) of using DES and NADES in eliminating FFA. Rice bran oil containing the initial FFA content will be mixed with a solvent then stirred while heated at 50oC for 240 minutes. The results obtained at each stage were tested using saponification value analysis and gas chromatrography mass spectrophotometry analysis to determine the level of FFA in oil, as well as UV-Visible Spectrophotometer to determine oryzanol levels in oil. With the deasidification process in this study, FFA in CRBO can be completely removed without disturbing the composition of bioactive components using the method of liquid-liquid extraction multi extraction with green solvent which is safer for the environment.

Keywords
Betaine Monohydrate, Choline Chloride, Deacidification, Liquid-liquid Extraction, Rice Bran Oil

Topic
Chemical Engineering

Link: https://ifory.id/abstract/3YBZyzKpwNHR

Corresponding Author
Vivi Alvionita Sari

Institutions
(1) Departement of Chemical Enginering, Institut Teknologi Sepuluh Nopember
(2) Departement of Chemical Enginering, Institut Teknologi Sepuluh Nopember

Abstract
Molasses, Stillage or vinasse and Spent wash are large liquid wastes production in the bioethanol industry that contain high sulfur. This liquid wastes are dangerous if it discharges directly into the environment without pretreatment. For this reason, pretreatment is needed to reduced the sulfur concentration of liquid waste (molasses) using biofiltration method. The objective of this research is to eliminate the content of H2S or sulfur in the wastewater of the bioethanol industry (molasses) by using aerobic bacteria such as Acidithiobacillus thiooxidans dan Pseudomonas putida. The method of this experimental work used biofiltration which are attached on wood chips by aerobic bacterial to form biofilms in the reactor. The process in this study was conducted in two steps. The first step was carried out by sulfur oxidizing bacteria such as A.thiooxidans and P. putida with a concentration of 10% and 20% (v/v) that growth on packing to form biofilms in the reactor for 13 days. Furthermore, as the second step the bacteria degraded H2S content of liquid waste with attached bacteria on packing for 15 days in biofiltration reactor. From the preliminary results of this study, reactor with 10% (v/v) A. thiooxidans on wood chips packing and 3% (v/v) concentration molasses waste can degraded H2S from 4.35 mg/L to 1.55 mg/L (64.37% removal efficiency) and for reactor with 20% (v/v) A. thiooxidans can degraded H2S from 4.35 mg/L to 1.16 mg/L (73.33% removal efficiency). Meanwhile, reactor with 10% (v/v) P. putida can degraded H2S from 4.35 mg/L to 1.94 mg/L (55.40% removal efficiency) and for reactor with 20% (v/v) P. putida can degraded H2S from 4.35 mg/L to 1.47 mg/L (66.21% removal efficiency).

Keywords
Acidithiobacillus thiooxidans, Biofiltration, Molasses, Pseudomonas putida, Wood chips

Topic
Chemical Engineering

Link: https://ifory.id/abstract/7mgxkvAVwRKQ

Corresponding Author
Untung Mardono

Institutions
(a) Departement of Industrial Engineering, University of Mercu Buana, Jakarta, Indonesia
(b) Departement of Mechanical Engineering, University of Sultan Ageng Tirtayasa, Banten, Indonesia
(c) Departement of Electrical Engineering, University of Sultan Ageng Tirtayasa, Banten, Indonesia

Abstract
Control of inventory of raw materials becomes an important part of the manufacturing process. By controlling good raw materials will reduce storage costs in warehouses, increase productivity and profits of the company. In this paper use quantitative methods that will result in the calculation of the most efficient order quantity to increase the productivity. Preparatory planning by just in time method is done by designing the demand for the next year using the forecasting method of linear trend, moving average and single exponential smoothing then extended by making the master schedule of production to be continued by designing the transmission system. From the estimate of the approximation method with the smallest error value is the 33.57% linear trend method, derives the shortest path and produces lead time using the nearest neighboring method equivalent to 8 hours. So the result obtained is based on its approach at the right time the storage cost is lower than Rp 1,445,708,937 to Rp 542,580,380 and increase the cost of the message from Rp 341,280 to Rp 4,266,000 and the company is able to save on cost of inventory 9.4%

Keywords
Inventory; Reorder Point; Just In Time

Topic
Industrial Engineering

Link: https://ifory.id/abstract/wahTJ7QENpHM

Corresponding Author
Rifky Ujianto

Institutions
Departement of Civil Engineering, Universitas Sultan Ageng Tirtayasa, Banten, Indonesia

Abstract
Waterfront area currently has a potential as a face of the city, it should not only being the behind area of the city. Waterfront area can be a tourist destination and a place that create social interaction, so that area can be the center of economic growth for the city especially in the field of tourism activity. Waterfront development experience many problems such as the loss of place quality. In the other side, private investment is not clearly regulated and causing the privatization of land in the shoreline area that should be the public space. Communities that received the impact of the development in the shoreline area are not to get involved in the planning process. These conditions impact that people can not freely access the beach. It happens because currently there is no policy to regulate and control the growth of the area as a tourist destination. This study formulates the design of tourism public space in a seaside area with attention to the image of an area and have the quality of public space. By analyzing the design area both regionally and environmental context, and including aspiration preferences of each stakeholders interest in the findings obtained several principles that need to be considered to create a coastal tourist area as public space. In this study, planning and designing is required to involve the community as a preferences and created a partnership program between the investor and the government as policy makers. With this cooperation, the growth of coastal resorts can be run as a shared vision that avoids conflicts of interest.

Keywords
Tourism, Waterfront, Public Space, Carita Beach, Banten.

Topic
Civil Engineering

Link: https://ifory.id/abstract/gJdV6DmRPa7x

Corresponding Author
Nurian Satya Wardana

Institutions
a) Universitas Indonesia
Kampus UI Depok, Jawa Barat, Indonesia 16424
*garniwa[at]gmail.com

Abstract
Demand for air conditioning is rising at an unprecedented level. Sudden increase in air conditioning usage has a potential of destabilizing the power grid and at extreme condition can cause power outages. Ability to control air conditioning is therefore a very significant subject for both the eletric power utility and electric power consumer. In some developed countries, this is realized by a program called demand-side management. The progress of information technology and the increasing affordability of the cost of fabricating electronic devices have given rise to new concepts in the implementation of demand-side management programs, namely the direct load control method. Direct load control is a mechanism that allows demand-side management programs to run automatically without interference from consumers. This is done by directly controlling consumer electricity equipment through the internet or other wireless communication networks. This study analyze the method to design controlling device for use in direct load control implementation. Load demand of the system is compared between before and after the installation of direct load control devices. Significant load reduction is noticed after the installation of direct load control devices.

Keywords
direct load control, load reduction, load control

Topic
Electrical Engineering

Link: https://ifory.id/abstract/WZd8yweGj4Kv

Corresponding Author
Romi Wiryadinata

Institutions
University of Sultan Ageng Tirtyasa

Kepala dinas BPBD cilegon

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 sirenes), 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.

Keywords
Linked Sirine, Tsunami Early Warning System, Tele-Control, PUSDALOPS BPBD, Cilegon City

Topic
Electrical Engineering

Link: https://ifory.id/abstract/k6QwFM3KTmBN

Corresponding Author
HERI HARYANTO

Institutions
Departemen of Electrical engineering

Abstract
Thermo electric cooler is an environmentally friendly cooling component because it does not produce harmful substances such as Freon or CFC which is usually produced by refrigran and air conditioning so as not to damage the ozone layer in the atmosphere of the earth as well as global warming. In principle, TEC has a capability called peltier effect that is the temperature difference when the component is fed by an electric current. On one side of the TEC will absorb the heat and on the other side release the heat, in conditions absorb the heat of the TEC side becomes cold, while the heat-releasing side will be hot. With such unique capabilities, TEC can be applied to an air conditioner and heating device, so it can be used for other purposes or interests and without having to contribute harmful substances to the environment and atmosphere.

Keywords
Thermo Electric Cooler, TEC, Temperature, Humidity, Sallout

Topic
Electrical Engineering

Link: https://ifory.id/abstract/2vnq6uRAdmp7

Corresponding Author
Asep Ridwan

Institutions
a) Faculty of Engineering, University of Sultan Ageng Tirtayasa Jl. Jend Sudirman Km.3 Cilegon, Banten 42435, Indonesia
*asep.ridwan[at]untirta.ac.id
b) Faculty of Engineering, University of Sultan Ageng Tirtayasa Jl. Jend Sudirman Km.3 Cilegon, Banten 42435, Indonesia

Abstract
Marine fish commodities are perishable food. Many risks that can damage the catch of marine fish include not stored and carried in low temperature conditions. Therefore, risk mitigation are required to reduce the risks that occur. This research aims to identify, analyze, evaluate and design the strategic risk mitigations with supply chain risk management and cold chain system approach. The supply chain risk management consists of: risk identification, risk analysis, risk evaluation, and risk mitigation in the entire of supply chain. The cold chain system is carried out from upstream to downstream in the activities of fishermen at the Karangantu Fisheries Port, Serang, Banten. The results are identified 16 risk events, 5 priority risk agents, and 5 proactive actions. The proposed strategic risk mitigations are: counseling on how to handle good catch results; adding the Port Operational Section in the field of Fish Demolition Inspection; giving penalties for fishermen who do not handle catching results properly; preparing to unload the results of fishing when the ship is on the dock, and proposes assistance for fishing aids to the Ministry of Maritime Affairs and Fisheries.

Keywords
supply chain, risk mitigation, cold chain system, fisheries

Topic
Industrial Engineering

Link: https://ifory.id/abstract/TnUKRZ3NupjL

Corresponding Author
Wahyuni Martiningsih

Institutions
Universitasity of Sultan Ageng Tirtayasa

Abstract
This research to design a wireless electric power transfer system by utilizing a used TV flyback transformer. Flyback TV is used as a Tesla coil power supply with a flyback converter circuit. The principle of wireless in this study is the resonance of electromagnetic waves produced by the Tesla coil. Experiments are carried out by providing switching frequencies and changing distances. The results showed that the power produced was 31.24 W (highest) at a switching frequency of 6.8 kHz and at a distance of 10 m. Efficiency at the same condition is 56,768%.

Keywords
Tesla Coil, Flyback Converter, Trafo Flyback, NE555, Wireless Power Transfer

Topic
Electrical Engineering

Link: https://ifory.id/abstract/U23wHqFBbCAM

Corresponding Author
Akbar Gunawan

Institutions
(a) Department of Industrial Engineering, Universitas Sultan Ageng Tirtayasa. Jln Jend Sudirman Km.03 Cilegon Banten
*a68ar[at]untirta.ac.id
(b) Department of Industrial Engineering, Universitas Sultan Ageng Tirtayasa. Jln Jend Sudirman Km.03 Cilegon Banten

Abstract
The era of industrial revolution 4.0 was marked by the application of information technology in carrying out industrial activities, the application of information technology needed was the development of a website-based business application model to enhance competitive advantage. The sales system at CV Duta Dharma still uses a manual system. By relying on manual systems and starting to pay, this still doesnt feel enough to change significant sales increases. Therefore we need to design an e-commerce web-based online marketing information system, The components used in the design process of this system are Domain, Hosting, Wordpress, Woocommerce Plugins, MySQL, OS Windows 10, Microsoft Office (Visio, Word), Mozilla Firefox, Google Chrome browser. System modeling in e-commerce website design systems CV Duta Dharma designed context diagrams to find out shareholders, design decomposition to find out inputs, processes, and outputs. Then the design of data flow diagrams (DFD) to find out the data flow in the sales system at CV Duta Dharma, e-commerce website CV Duta Dharma has been designed and created with Wordpress CMS. This e-commerce website has bank transfer payment facilities and can be run well and is expected to make CV Duta Dharma better and make it easier in product marketing

Keywords
Industrial Revolution 4.0, E-Commerce, Information System, design

Topic
Industrial Engineering

Link: https://ifory.id/abstract/EvVng2DyPHfK

Corresponding Author
Nuraida Wahyuni

Institutions
Faculty of Engineering, University of Sultan Ageng Tirtayasa
Jl. Jend. Sudirman Km. 3, Cilegon, 42435, Indonesia
*nrdwahyuni[at]gmail.com

Abstract
The measurement of workload is carried out to determine the amount of burden on a position through job description. Before determining the number of man power, it is necessary to measure the workload for a certain position. The method commonly used is the Full Time Equivalent (FTE) method. The FTE method is used to calculate workloads with various task variations. The case study in this study is ABC, a machine maintenance service company. As a company engaged in the service sector, having high quality and proportional number of human resources (HR) is important in order to provide the best service for customers. For this reason, an application is needed that can support FTE calculations. The purpose of this study is to find out the number of employees by calculating workloads based on the Java-based FTE method. The design of this application is done using the System Development Life Cycle (SDLC) approach. The design of this application starts from the stage of analysis, design, coding, testing, and maintenance. Functional needs refer to the HR division as user and administrator. The research findings are expected to facilitate the relevant divisions to calculate employee-s workloads using Java applications.

Keywords
Workload calculation; FTE; Design; SDLC; Java

Topic
Industrial Engineering

Link: https://ifory.id/abstract/B9KPvQrbU3fH

Corresponding Author
Adam Mulia

Institutions
Universitas Islam Indonesia

Abstract
One of the factors that influence the production process is controlling raw material inventories. The availability of raw material inventory makes the inventory condition not overstock or stockout, and then with Inventory control can be done by knowing the ideal warehouse capacity for each raw material. The issue of raw material inventory, makes many companies try to continue to improve the inventory system of raw materials they have. In this study the aim was to find the ideal warehouse capacity with the min-max method and evaluate the condition of the system before and after the changes using the Monte Carlo simulation to avoid overstocks and stockouts. Based on the simulation results of the real system model it is known that each raw material several times experiences less inventory than safety stock so that the possibility of a stockout will occur more frequently, and from the intensity of ordering it can be categorized frequently. After applying the min-max results, the condition of the raw material inventory has improved. Based on the results of this study, the solutions provided could potentially improve the inventory system, namely by increasing the warehouse capacity for each raw material. The ideal warehouse capacity can refer to the maximum capacity of raw material inventory that has been obtained so that the increase in warehouse capacity for DAP raw materials (12,029.70 tons), KCL Powder (9,644.56 tons) and CLAY (5,505.00 tons)

Keywords
Inventory Control, Overstock, Stockout, MIN-MAX, Monte Carlo

Topic
Industrial Engineering

Link: https://ifory.id/abstract/8rLwnWxf9D7k

Corresponding Author
DNK Putra Negara

Institutions
(a) Mechanical Engineering Department of Udayana University, Street of Bukit Jimbaran, Badung, Bali, Indonesia
(b) PPPTMGB “Lemigas”, Jl. Ciledug Raya Kav. 109, Jakarta Selatan, 12230

*E-mail: devputranegara[at]gmail.com

Abstract
Activated carbon is a multipurpose material due to its unique characteristics such as high surface area and pore volume. This paper concerns to develop and characterize of activated carbon from lignocellulosic material, particularly from swat bamboo (Gigantocholoa verticillata). Activated carbons were manufactured under different carbonization temperatures (550, 650, and 750OC) and activation durations (1.5 and 2 hours). Characterizations conducted include proximate and proximate analyses and nitrogen adsorption isotherm test in order to know the proximate and elemental composition and the structural characteristics (pore volume, surface area, pore diameter, and pore size distribution), respectively. The results show that activated carbon that activated at a temperature of 750 OC over 1.5 hours obtain the optimal characteristics. This activated carbon had highest surface area (SBET), pore volume (Vp) and nitrogen adsorption capacity of 135.30 m2/g, 0.138 cm3/g, and 95.776 cm3/g, respectively, with an average pore diameter of 2.053 nm and fix carbon and C contents of (75.26%) and C (76.79%) respectively. Its pore size distribution is monomodal and most of the adsorption occurred at pore size in the range of 0.795–10.486 nm and the highest adsorption (0.056 cm3/g/nm) occurred at a pore size of 1.516 nm.

Keywords
Lignocellulosic material, activated carbon, adsorption isotherm, pore size

Topic
Materials Science

Link: https://ifory.id/abstract/7MVEJqjCf3dQ

Corresponding Author
Yusraini Muharni

Institutions
Industrial Engineering Department of Engineering Faculty Universitas Sultan Ageng Tirtayasa, Jalan Jend. Sudirman Km 3 Cilegon Banten Indonesia 42435

Abstract
Production scheduling problem is arising when a company need to allocate several jobs into limited resources. The problem is related to sequencing the creation or execution of the product as a whole for a number of available machines. This research focus on developing intelligence scheduling system for flow shop scheduling problem n job m machine by applying both heuristic and metaheuristic approch consists of Longest Processing Time (LPT), Shortest Processing Time (SPT), Particle Swarm Optimization (PSO) and Ant Colony Optimization (ACO). The measure of performance of the scheduling is makespan. The Intelligence Schedulling System was designed using MATLAB software programming. The System is tested in Flow Shop Scheduling Problem with configuration of 5 Jobs and 7 Machines. The result shows that the either heuristic approach and metaheuristic approach can run smoothly when solving the scheduling problem in the system.

Keywords
FlowShop;Scheduling;PSO;ACO;Makespan

Topic
Industrial Engineering

Link: https://ifory.id/abstract/D4FUcdXfpvng

Corresponding Author
Lily Puspa Dewi

Institutions
Universitas Kristen Petra

Abstract
Many previous researches shown the percentage of population using mobile technologies was increasing constantly, included in Indonesia. This growth apparently also supported by Android penetration as an Operating System and the easier of internet access. Mobile phone has become the main device in daily life, included in business activities. People increasingly need a mobile phone as gadget for storing various documents. This research is designed to address the document management application in Android. Application help to organize, retrieve and modify document contents. With this Android application, users can use it to store documents and can combine several documents as desired. This application works based on HTML format file. Therefore, the original files are converted to html format. While the conversion process cannot be done directly, but the original file is converted to pdf and then converted to html. All the conversion process is done in the server and application retrieve the result as HTML file for displaying in the mobile phone screen. During the converting process, it is found that the number of concurrent users is not relevant with the server respond time. The server respond time is determined by document size.

Keywords
Android, Document Management

Topic
Computer Engineering

Link: https://ifory.id/abstract/6AmECrcbd9Yq

Corresponding Author
Firman Kurniawansyah

Institutions
Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, Indonesia

Abstract
Indonesia possesses high potential to develop an advanced biorefinery system, thanks to its high richness of natural resources. Bamboo for instance, with more than 200 species, in which 5% of its global distribution is found in Indonesian archipelago, is an invaluable resource to develop many useful materials. Here in this study, bamboo has been used to produce activated carbon for catalyst material. Bamboo raw material was obtained from a city park in Surabaya, and converted to activated carbon through carbonization at 773 K, followed by activation using acidic solution treatments. The activated carbon (AC) was used as catalyst support, impregnated by nickel (Ni) as metal active. The Ni/AC was applied as catalyst for hydrogenation of glucose, conducted at 0.5 MPa and 363 – 403 K. With surface area of 125 m2/g of the carbon supported catalyst applied, glucose could be converted to polyols with overall yield of approximately 3 wt % of the total products.

Keywords
bamboo, activated carbon, catalyst, hydrogenation, glucose

Topic
Chemical Engineering

Link: https://ifory.id/abstract/7q6ratRbHZAC

Corresponding Author
Agus Dwi Anggono

Institutions
Mechanical Engineering Department, Universitas Muhammadiyah Surakarta

Abstract
In Indonesia, plastic waste production was at the second rank in domestic waste. It was produced around 5.4 million tons per year. It became national issues, due to Indonesia was the second biggest country after China that poisoning the sea with plastic. The objectives of the study are to develop biodegradable plastic composite and to investigate the mechanical characteristic and water absorption. It was made from polypropylene (PP) mixed with corn stalks powder. In this study, the weight fraction of polypropylene and powder was varied as 95%: 5%; 90%: 10%; 85%: 15%. For the water absorption test, the specimens were soaked in the water for 1, 7, and 14 days. The highest value of the tensile test was delivered from a specimen of 95%:5% weight fraction. The tensile test of the soak specimen for 0, 1, 7, 14 days was obtained 17,41 MPa, 16,94 MPa, 16,11 MPa, 13,51 MPa respectively. The strain was 1.07%, 1.19%, 1.01%, 0.87%. The modulus of elasticity was 1686,74 MPa, 1500,42 MPa, 1712,1 MPa, 1558,49 MPa. By adding the powder to the plastic, it was able to absorb water. The water absorption after 1, 7, and 14 days of water soak was 0.607%, 1.468%, and 4.651% respectively. The specimen of biodegradable plastic composites with a 95%: 5% ratio have compatible characteristics with commercial plastics and can be degraded easier.

Keywords
composite, biodegradable plastic, polypropylene, corn stalks powder

Topic
Materials Science

Link: https://ifory.id/abstract/7AbkgXBHC423

Corresponding Author
I Gusti Agung Kade Suriadi

Institutions
(a)Mechanical Engineering Departement, Udayana University, Bali-Indonesia

Abstract
Brake pads is one component in the braking system that directly touches or rubs against the rotating part which serves to reduce speed or stop the vehicle. In general, brake pads are made of asbestos material and alloys, where this material has a temperature resistance of 800˚C, but asbestos materials have carcinogenic properties that have a negative impact on the environment and human health. This research was developed to answer these environmental and health problems, namely to look for alternative brake pads that have a good wear rate and are still able to work at high temperatures. Brake pads is made from a composite hybrid material reinforced with mountain rock waste, shellfish powder, alumina and bound using a phenolic resin polymer (PR-51510i). This brake pads material is produced through a sintering process with an emphasis of 2000 kg for 30 minutes at a fixed temperature of 250° C. The research aims to investigate hardness characteristic and wear rate of hybrid composite that test using the vickers according to standard ASTM E-384. The reinforced materials and matrix polymer composition is 60%: 40%. The results show for the average hardness VHN to 24.72, 25.40, 25.67, 25.74 and 26.53. The average hardness hybrid composite shows the hardness harder than asbestos materials. The value of asbestos lining pads wear is 0.00011 g/m, while the wear value of composite hybrid brake lining pads is 0.00009 g/ m to 0.000071 g/m.

Keywords
Wear Rate, Hybrid Composite, Mountain Stone, Shellfish, Alumina

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/xb3eh8H7ckwZ

Corresponding Author
Agusutrisno Agusutrisno

Institutions
Department of Electrical Engineering, Faculty of Engineering, Sultan Ageng Tirtayasa University, Jenderal Sudirman.St Km 3, Kotabumi, Purwakarta, Cilegon City, Banten 42435, Indonesia

Abstract
The limited use of navigation technology poses a risk to blind person becoming lost, while in a foreign place and causing them to rarely travel. The purpose of this study is to design guiding sticks for blind person by tracking and homing. The position of coordinates and wind direction is processed into information on sound signals and vibrations. The method used in this research is GPS bearing and inverse angle, using compass and ultrasonic sensors. Afterwards, the data output in this system is directional information in the form of sound, besides information in the form of an obstacle when in front of the sensor. The test results prove that the GPS bearing method can produce a more stable direction. However, GPS accuracy can decrease when it is blocked by trees and buildings. While the inverse angle method, GPS data is stored on the datalogger, which does not require GPS accuracy when determining direction. The angle of the direction is more accurate if the average angle when tracking is not too wide.

Keywords
Guiding Sticks, GPS, Compass and Ultrasonic

Topic
Electrical Engineering

Link: https://ifory.id/abstract/JPAbmxrf7DUQ

Corresponding Author
Ilham Ardatul Putra

Institutions
Lemigas dan ITB

Abstract
The use of surfactant in chemical flooding techniques to increase the oil production has been investigated for several decades. However, 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. However, for the analysis of a molecule that lack of this colour function, need to be developed using other techniques, such as mobile 1H NMR measurement. In this study, quantification of nonionic surfactant that absent of chromophore group was performed using a combination of mobile 1H NMR with Solid Phase Extraction (SPE). SPE was used to extract the samples that dissolved in water, whereas 1H 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 stationaty 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 deuterized chlorophome (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.

Keywords
Chemical Flooding, Nonionic Surfactant, Low field 1H NMR, Solid-Phase Extraction, C-18 Stationary Phase

Topic
Chemical Engineering

Link: https://ifory.id/abstract/ZXbT7JKmwcer

Corresponding Author
Muhammad Iman Santoso

Institutions
a) Electrical Dept. University of Sultan Ageng Tirtayasa, Center for Transport System and Logistics (CTSL)-Untirta
Jl. Jend Sudirman KM. 3 Cilegon 42435 - Indonesia
*iman.santoso[at]untirta.ac.id
b) Electrical Dept. University of Sultan Ageng Tirtayasa
Jl. Jend Sudirman KM. 3 Cilegon 42435 - Indonesia
c) Communication Science Dept. University of Sultan Ageng Tirtayasa
Jl. Jend Raya Jakarta KM. 4 Pakupatan Serang 42111 - Indonesia

Abstract
Congestion has become a common problem in urban. Road growth is always slower than vehicles. City mayor around the world already understands and try to find breakthroughs. Unfortunately, the settlement is often partial and ignore social interests. This paper seeks to solve urban transport problem in urban with information technology, spatial analysis, social plan, and legal formalities. The research began with a survey of public transport routes using mobile apps, a review of the transport regulation, one-way road arrangement study followed by WebGIS Development. This application is a multi-tier client-server architecture consisting of the client-side, the server-side, and the data directory that stored in the VPS (Virtual Private Server). The client-side is powered by HTML-5, which is assisted by the API (Application Programming Interface) from several open-source online mapping. Standard performance test of the application has been set, and every menu is well functioned. Every data on the transport infrastructure could be gathered and stored on the web. Furthermore, every single transport planning should refer to this transport information system. Thus, WebGIS becomes online surveillance system for land use.

Keywords
WebGIS, Spatial-Analysis, Transport, Congestion, Urban

Topic
Computer Engineering

Link: https://ifory.id/abstract/eDKHaEjN6URc

Corresponding Author
Eva Novianti

Institutions
Darma Persada University

Abstract
This research will provide wedding planner with time management and comparison budget with several Indonesian Traditional wedding package. The development of wedding planner will use extreme programming method and implement project management plan to arrange the wedding. The development of this application will use CodeIgniter as a framework which is easier to continue on the next development. The final result of this research is a wedding planner to help bride and groom to easily maintain their schedule with wedding organizer on their pre-wedding. Moreover, Indonesian bride and groom more into traditional ceremony and on the budget with tight schedule, this wedding planner will compare several package and flexibility with schedule and reminder to give alert in order to keep on the timeline.

Keywords
extreme programming, project management, wedding planner

Topic
Computer Engineering

Link: https://ifory.id/abstract/pNm9hPQjcbGZ

Corresponding Author
Agung Sudrajat

Institutions
Universitas Sultan Ageng Tirtayasa

Abstract
The objective of research is investigation on characteristics of Particulate Matter (PM) on the food storage room using electrostatic precipitation (ESP). The filter of ESP is a technic of filtration device that removes fine particles gas using the force of an induced electrostatic charge and corona discharge produced by DC high voltage. The experimental research is conducted with the ESP Filter and smoke chamber. Artificial smoke was injected in the chamber and ESP charges the particle by corona discharge that applied to reduce diameter of particulate matter (PM). The results show that the time of smoke discharge from the room is shown in figure 1. Cooper material show slightly faster than the stainless steel and aluminum. Even the results show the cooper faster than others, stainless steel is chosen for application of ESP, because the characteristic of stainless is anti-corrosive and easy maintenance.Research results by 15 mm distance plate is more effective to absorb of particulate matter in the food storage than 9 mm distance plate in both of voltages. The effectiveness of cooper material for reduce of particulate matter diameter is showed. The measurement of PM diameter is using Scanning Electron Microscope with 5000 times enlarged. Experimental data taken by SEM Phenom-Xand Sputtering Quorum. The data shows when using cooper plate, mean diameter of PM are 4.06 μm and 3.64 μm for 9 mm and 15 mm distance plate, respectively. Also, for the stainless-steel and aluminum plate shows the 15 mm distance plate the mean diameter of PM is higher than 9 mm, this is because the effect of corona needs some space between plate for the reaction. One of the main advantages of ESP system is that various types of dust, mist, droplets, etc., can be collected under both dry and wet conditions and also submicron size particles can be collected with high efficiency.

Keywords
electrostatic precipitator, indoor air pollution, smoke, DC high voltage

Topic
Mechanical Engineering

Link: https://ifory.id/abstract/HJBWKka2rxUt

Corresponding Author
Ghefra Gaffara

Institutions
1 Civil Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia 16424
2 Center for Sustainable Infrastructure Development, Faculty of Engineering, Universitas Indonesia, Depok, Indonesia 16424
3 Urban and Regional Planning, Faculty of Engineering, Esa Unggul University, Jakarta, Indonesia 11510

Abstract
Seatropolis is one of the break through to the coastal city. The concept of coastal city planning becomes something important, considering dependent relationships between ports and towns on coastal areas. Study Demonstrate that planning and implementing effective policies will be Have a positive impact on the city and port, where the port Increase in volume while cities will enjoy economic growth (Brand, 2014). As an archipelago country, Indonesia has a dependent High on sea transportation. In the year 2009, the port system in Indonesia Was estimated to handle 968 million tonnes of cargo (Nathan Associates, 2011). Division Between domestic and international freight in Indonesia is at a level Ranging from 44% to domestic cargo and 56% international cargo. With the ever-increasing population, economic capabilities, and needs of Indonesia, this figure will continue to rise in the future. One of the great drivers that will lead to increased The need for this sea transportation is AEC (Asean Economic Community). With the agreement between countries in southeast Asia, it will be cost removal and trade restrictions in the Southeast Asia area. This will Cause (1) The increasing number of goods in and out of Indonesia, and (2) the availability of low salary workers and high-skilled workers (Van Dijk, Van de Mheen, & Bloem, 2015). With increasing movement of people and goods, then Indonesia will require a response to utilize the potential This effectively. This reserach has an following objectives (1) Specify the Operational and maintenance costs (2) determine the payment schemes Achieving realization of this concept. This research aims to design smart infrastructure applications in the development of Indonesias economic corridor in terms of industry and mapping the long-term planning of key infrastructure and also design a smart infrastructure development masterplan based on development priorities over time range to Indonesia 2045.

Keywords
Cost, Government, Seatropolis, Transportation , Port City

Topic
Civil Engineering

Link: https://ifory.id/abstract/uG8gKDUHkC6L

Corresponding Author
VINA VAHLEVI AL JUNED

Institutions
a) Department of Industrial Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
email: vvahlevi[at]gmail.com

b) Department of Industrial Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia
email:vanany[at]ie.its.ac.id

Abstract
Rice is the main staple food in Indonesia that has the four largest population in the world. East Java is one of the largest rice producing centres in Indonesia and many other regions such as Papua, Kalimantan, NTT, Sumatra, DKI, and Yogyakarta depend on its supply of rice. The contribution of rice from East Java to other provinces is 17.1% and there is a decline every year while the consumption of rice is increasing every year. How the sustainability of the East Java rice supply in the future needs to be known to policyholders so that there will not be a crisis of rice shortages so that the understanding of Indonesian food becomes disturbed. The purpose of this paper is to develop a system dynamic (SD) model for estimation of East Javas rice contributions to Indonesian food security. An integrated system dynamics simulation model was developed using a system dynamics modelling approach to examine the interaction and feedback processes between the production per year, paddy planting area, consumption per year, agricultural production sub-sectors and population subsectors. The objective of the model is to provide a learning tool to understanding of the long-term dynamic behaviour of the rice production, and as a decision support tool for exploring plausible policy scenarios necessary to make East Java readiness on achieving the target as “Lumbung Padi Nasional”. Managing the agricultural development, providing the structural and behavioural pattern tests, and doing the statistical test to evaluate and validate the performance of the model. The results showed that the simulated outputs represent the real system. Three additional scenarios were simulated. (scenario 1) expanding rice field area, (scenario 2) improving the intensification and there should be additional support to farmers through provision of agricultural inputs such as seeds, fertilizers and pesticides and be given sufficient training to best apply these input and (Scenario 3) increasing the amount of infrastructure in order to distribute more supply.

Keywords
Food Security, Rice stock, Early Warning, East Java, System Dynamics (SD)

Topic
Industrial Engineering

Link: https://ifory.id/abstract/NT2JEDwyXgqe

Corresponding Author
Tri Partuti

Institutions
University of Sultan Ageng Tirtayasa, Cilegon, Banten, Indonesia

Abstract
The use of renewable energy such as hydrogen gas as fuel is still very lacking due to difficulties of its storage. Hydrogen storage material is focused on developing porous material. Chicken feather is one of the organic wastes that can be used as porous activated carbon. The samples made in powder and briquette form. The activation process was carried out physically with variation in time 30, 60 and 90 minutes, temperature 500 °C and flow rate of nitrogen 0.3 L/minute. The carbon content from carbonization of chicken feathers is 62.85% using ultimate analysis. The activated carbon analysed with Brunauer-Emmett-Teller (BET) show that surface area for powder sample with activation time 30, 60 and 90 minutes is 79.28 m2/g, 128.28 m2/g and 332.49 m2/g, respectively. The surface area for briquette sample with activation time 30, 60 and 90 minutes is 741.37 m2/g, 150.55 m2/g and 162.65 m2/g, respectively. The Scanning Electron Microscope (SEM) results show that pores appear on the briquette sample are much more and more visible than the powder sample.

Keywords
hydrogen storage, chicken feather, activated carbon, activation time, surface area

Topic
Metallurgy Engineering

Link: https://ifory.id/abstract/DT6WzLZUMPq7

Corresponding Author
Asaf Kleopas Sugih

Institutions
Chemical Engineering Department,
Parahyangan Catholic University,
Jl. Ciumbuleuit 94
Bandung 40141
Indonesia

Abstract
Tapioca starch is isolated from the root of cassava (Manihot esculenta) plant cultivated mainly in tropical areas of Asia, Africa, and America. Tapioca starch has very low residual impurities, bland flavor, and superior gel properties. Native and modified tapioca starch has been widely utilized for food applications. In this research, a preliminary study on the use of different types of phosphorylating reagents (Sodium Tripolyphosphate/ STPP, Sodium Trimetaphosphate/ STMP, and mixture of both reagents) on the synthesis of modified tapioca starch was performed. Phosphorylation of tapioca starch was performed at a temperature of 130 oC , initial suspension pH of 9, and an intake of STPP of 5 %-w/w and/ or STMP of 2 %-w/w based on dry starch. The experimental result shows that modified starch products with Degree of Substitution (DS) of 0.0084-0.0132 (correlated to P-content of 0.169-0.258 %-w/w) were obtained. The use of both STPP and STMP phosphorylating reagents gives starch products with increased solubility. Phosphorylation with all types of reagent also increases water and oil absorption capacity as well as paste clarity of tapioca starch. The result suggests that STPP and STMP are potential phosphorylating agents for modified tapioca starch preparation.

Keywords
Tapioca; Cassava Starch; Modified Starch; Phosphorylation

Topic
Chemical Engineering

Link: https://ifory.id/abstract/4VNEYnbmUaxT