bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Development of Four Link Bar Mechanism For Transplanting Wet Rice Seedlings
Authors: Marzuki  , Syukran  , Azwinur
Published: June 2019

Indonesia is a great area for the development of sustainable agricultural cultivation technology. Wet rice cultivation management system and method is still done traditionally. These activities are requiring the expertise of a very high order to obtain a uniform spacing and planting. Heterogeneity of plant spacing will have an impact on seed propagation delays planting, the farmer difficult when doing weeding, fertilizing and spraying. Transplanting of seedlings is a labour-intensive operation in the cultivation of rice. There exists a need to mechanize for this operation. This study aims to determine the design parameters of the mechanism design four link bar for modelling mechanism in order to obtain the optimum parameters of the locus of planting. Design tools rice growers using the four-link bar mechanism able to work mechanically to take the rice seedlings from hoper and planted with uniform spacing, closing the planting hole, reducing the time of planting and operational costs. The method used in this research is the design of the prototype and design of functional and structural approaches. Research has produced a prototype component of the combined mechanisms of rice cultivation four link bar mechanism which can move the locus of decision-continuous form of seeds and planting seeds for the six rows.
Application of Response Surface Methodology for Biodiesel Synthesis Optimization Through Transesterification Reaction using h-zeolite/ki Heterogeneous Catalyst
Authors: Kurniasih E , Pardi P
Published: June 2019

Biodiesel production based on crude palm oil (CPO) using heterogeneous catalysts is a new hope for solving the energy crisis. One type of heterogeneous catalyst is H-Zeolite/KI synthesized from natural zeolite impregnated with 0.05% (w/v) KI compound for 2 hours. The research focuses on determining the optimum operating conditions for biodiesel production using H-zeolite/KI catalysts. As raw material used CPO which has pre-treatment through an esterification reaction using 15% H2SO4 (w/v) as catalyst, temperature 65°C, stirrer speed of 400 rpm for 2 hours to reduce the free fatty acid content of raw materials up to 40%. Optimization of biodiesel production is carried out at the transesterification reaction. The research data was designed following the Response Surface Methodology (RSM) method using 3 independent variables and 5 levels, namely the ratio of H-zeolite/KI catalyst, transesterification temperature and mole methanol: CPO ratio with coded level (-1.682), (-1), (0), (+1), (+1.682). The research results show that the optimum operating conditions of biodiesel production were at the ratio of H-zeolite/KI catalyst at 2% - 2.5% (w/w), temperature at 45°C-50°C and mole ratio of methanol: CPO at (1:6). The biodiesel product was confirmed using gas chromatography and showed ester content of 88.02%. Characteristics of biodiesel products showed flash point 130C, acid number 0.4%, glycerol free 0%, viscosity 3.6 cP, density0.879 gr/cm3.
Characterization Study of Inorganic Hybrid Membrane of Mixed Activated Zeolite and Clay with PVA Adhesives using Sintering Method for colourless Peat Water
Authors: Elfiana E. , Diana Selvie , Fuadi Anwar , Fauzan Reza
Published: June 2019

The manufacture of inorganic hybrid membranes from the ingredients of activated zeolite (Z), clay (CL), white Portland cement (CW) and PVA adhesive has been carried out on various M1, M2 and M2 material compositions (Z: CL: CW: PVA = 25%: 50%: 20: 5%), (Z: CL: CW: PVA = 50%: 25%: 20: 5%), (Z: CL: CW: PVA = 75%: 0%: 20: 5%) respectively. 100 mesh zeolites are activated using 2M HCL. The membrane is printed in a cylindrical shape with a specification of 69,83x250mm and is burned at a sintering temperature of 500-700OC. This study aims to determine the classification of produced membranes and determine the effect of temperature on the characterization of an inorganic hybrid produced membranes based on permeability, density, porosity and membrane morphology test using Scanning Electron Microscopy (SEM). The results showed that the temperature influences membrane characterization. The higher is the temperature, the lower is the membrane density. The membrane pore size decreases and porosity increase. The results of the study obtained an inorganic hybrid membrane (MHA-ZC) classified as microfiltration membrane (MF) with a pore size of 1,2-6,302μm porosity 45%, density 0,811 gr/cm3, and flux permeability 313,57 L/m2.jam. The M1 membrane test has been able to remove the colour of the 90.59% peat water from 170 PtCu to 16 PtCu, and the pH of the peat water is successfully neutral at 6.5-7.5.
A Computational Fluid Dynamic Comparative Study on CO2 Adsorption Performance using Activated Carbon and Zeolite in a Fixed Bed Reactor
Authors: Sylvia N , Mutia R , Malasari  , Dewi R , Bindar Y , Yunardi
Published: June 2019

The increasing emission of carbon dioxide to the atmosphere from various sources has become an issue of great concern all over the world due to its significant contribution to climate change. Carbon capture and storage are commonly recognized as the major approaches to prevent carbon dioxide from entering the atmosphere. A number of CO2 removal technologies have been reported, including absorption, adsorption, membrane separation, and microalgal fixation. In this study, a Computational Fluid Dynamics (CFD) study was performed to investigate the performance of two adsorbents, coconut fiber activated carbon and zeolite 13X in removing CO2 from a continuous gas stream in a fixed bed adsorption column. A CFD code ANSYS R18.2 was used to investigate the influence of flow rate and bed height on the CO2 removal efficiency and adsorption capacity by varying the inlet feed velocity and bed heights. The results of the simulation showed that the highest CO2 removal efficiency of 63.13 percent was observed when the gas flowed at a rate of 50 cm3/minute to the column filled with the activated carbon adsorbent of 10 cm in height. While in the zeolite adsorbent 13X, the highest CO2 removal efficiency of 57.86 percent was also seen when the gas flowed at a rate of 50 cm3/minute at the bed height of 10 cm.
Efficiency of AX.25 Protocol in a Wireless SCADA Communication System for Monitoring Performance of Micro-Hydro Power Plants
Authors: Salahuddin  , Bakhtiar  , Yusman  , Fadhli
Published: June 2019

This paper presents the results of testing and estimating the efficiency of the AX.25 protocol implemented in the wireless SCADA communication system for monitoring the performance of the Micro-hydro Power Plant (MHPP). This protocol is commonly used for packet radio communications. AX.25 is a layer 2 protocol (referring to the OSI layer reference), the Data Link Layer. As a layer 2 protocol, AX.25 is responsible for building link connections, providing logic procedures for transferring connections and disconnection. This system can monitor several MHPP parameters such as voltage, current, frequency, and turbine rotation and can be accessed directly at one centralized location. Data from sensors installed in the generator are converted into digital data on the microcontroller contained in the Remote Terminal Unit (RTU). This data is then sent to the Main Terminal unit (MTU) so that it can be a reference for operators to decide further if there are MHPP parameters that change from the predetermined standard. AX.25 protocol is implemented on an arduino microcontroller hardware that functions as a Terminal Node Controller (TNC) that will regulate the traffic of data communication between several RTUs and MTU. In accordance with RTU requests, TNC will forward the data sent by the RTU with certain "call signs" to be forwarded to MTU and displayed at the monitoring center. The test results show that the efficiency of AX.25 protocol at transmission rates of 1.2 kbps, 2.4 kbps, 4.8 kbps and 9.6 kbps tends to be linear with respect to changes in delivery start-up time and does not have a significant impact on changes in start-up time transmitter. For all given k values, when T103 = 5, regardless of transmission rate, the protocol can achieve an efficiency of around 90%.
Modeling Design of 800 Watt Power Hybrid System in Lhokseumawe City Coastal Area
Authors: Muhaimin
Published: June 2019

The increasing demand for electrical energy, resulting in more natural resources such as petroleum, natural gas and others. This is also caused by the lack of awareness of electricity energy savings for example turn on the lights during the day. There are several ways to save electric energy one of them by using Hybrid Power Generation. Hybrid power plant is a power plant that uses more than one energy source, such as by using solar and wind energy. In addition to the free use of solar this as an effort to reduce human dependence on coal, oil and natural gas whose source will be thinning when used continuously. Hybrid Power Generation System is the integration of renewable energy based power system. The main goal is to save fuel consumption and reduce emissions, especially CO2. The design and simulation of a hybrid power plant system utilizes wind and solar energy potential for small-scale (800 VA) housing units in the coastal area of Lhokseumawe city of Aceh Utara district. the proposed Hybrid Power Generation system is able to meet 100% of the electrical load for homes in the coastal area of Lhokseumawe city. The portion of solar energy is 50% and 50% comes from wind turbines. This study aims to explore solar energy and wind energy as a source of renewable electrical energy. In the implementation of testing used homer software to simulate the conditions of sunlight intensity and wind speed in the coastal area of Lhokseumawe city. The utilization of energy converted to direct current energy is converted to alternating current, the wind turbine used to power the electric generator combination of both energy sources will be applied to the residential electric needs in the coastal area of Lhokseumawe city.
Different Trends of Hybrid Solar And Raindrops Energies to Generate Photovoltaic
Authors: Suryati  , Misriana  , Safitri Nelly
Published: June 2019

New trends for making an all-weather photovoltaic (PV) that is able to trigger by both sunlight and raindrops become trends in developing the solar energy systems to generate electricity for households, industries and buildings. The idea is to develop a hybrid device that harvests kinetic energy from water without destroying the output of the solar cell during sunny times. This paper reviews the two devices of hybrid sunlight and raindrops, namely are the Triboelectric Nano Generator (TENG) and Pseudo Capacitor Graphene Layer (PCGL), respectively. Both TENG and PCGL similarly in such way places two transparent polymer layers on top of PV cell. When raindrops fall on to the layers and then roll off, the friction generates a static electricity charge. In addition, these devices even could provide electricity at night whenever there is rain. These two trends of all-weather PV obviously have advantages and drawbacks, as they have been developed in order to make them more compact and efficient as the device that harvesting sunlight during dry seasons and rainfall during wet seasons both for days and nights.
Potential of Soil Amendments and Jatropha Curcas Plant in the Remediation of Heavy Metals Contaminated Agricultural Land
Authors: Leapheng R , Effendi A J , Helmy Q
Published: June 2019

Textile wastewater contaminated by heavy metal has been polluted to the agricultural land in Rancaekek, Bandung. To overcome the heavy metal contamination, phytoremediation technology has been proposed. Jatropha curcas plant with soil amendments (compost and EDTA) was utilized to investigate the heavy metal remediation in the contaminated soil. Five experimental treatments viz. S0 S1 S2 S3 and S
E
were set up for ninety days. The plant growth behaviour, heavy metal accumulation, and translocation (TF) and bioaccumulation (BAF) factors were determined. The untreated soil was indicated as silty loam containing Cd, Cr and Pb concentrations approximately 0.79, 100.15, and 8.43 mg/kg, respectively. The heavy metals were highly accumulated in the plant for treatments S3 and S
E
compared to control So. The accumulation of Cd, Cr and Pb in different J. curcas tissues can be classified as follow: root > shoot > leaves. Bioaccumulation and translocation factor of Cd were greater than one (BAF, TF > 1) while Cr and Pb were less than one (BAF, TF < 1). The highly removal of heavy metal was found that Cd = 81.73 % and Cr = 41.15% in S3 while Pb = 65.20 % in S
E
. To sum up, J. curcas species represented high TF and BAF in Cd removal, and low in Cr and Pb removal. It revealed that Jatropha curcas plant was suitable for phytoremediation of heavy metal contaminated soil, especially, combination with both compost and EDTA. Moreover, Jatropha curcas could be an emerging technology plant to alleviate the contaminated soil with multi-metal for sustainability of land resources.
Removal of Hexavalent Chromium from Raw Drinking Water by Zeolite-FeO Composite Supported Carbon: Case Study Citarum River
Authors: Widyawati YR , Notodarmojo S , Hidayat S , Helmy Q
Published: June 2019

Citarum River plays an important role in various sectors both domestic and economic for residents along the Citarum River Basin. The different source of wastewater from 400 industries disposes their wastewater directly to the Citarum River, which is predominantly dominated by the textile industry. Those industrial activities generate hazardous heavy metals such as Cr(VI) which can degrade the quality of the river. In this research, we will conduct a treatment on series of Cr(VI) containing surface water to meet the drinking standard of raw water. Zeolite-FeO is synthesized from natural zeolite in Sukabumi, and then impregnated with FeO, characterized using XRD and the result shows that iron oxide precisely hematite (α-Fe2O3) successfully impregnated into the zeolite. The Zeolite-FeO then modified with sucrose to give positively charged on the surface by the contribution of carbon. The adsorption process is carried out in batch with artificial waste containing Cr2O7
2- to obtain the optimum conditions such as the effect of time, pH and initial concentrations. From the adsorption experiment, the result shows the highest efficiency removal is 70,72% at pH 2 for 45 minutes by Zeolite-FeO-Sucrose.
Synthesis of adsorbent based on silica derived from bagasse fly ash as adsorbent chromium hexavalent in tannery waste water
Authors: Murti RS , Aprilita NH , Suyanta
Published: June 2019

Adsorbent based on silica derived from bagasse fly ash has been synthesized. The synthesis adsorbent began by performing the silica synthesis of BFA by the hydrothermal alkali method. Silica gel was characterized, FTIR spectroscopy and Surface Area Analyzer. The obtained Silica was modified with Hexadeyl Tri Methyl Ammonium Bromide (HDTMAB) at concentrations of 10, 20, and 30 mmol / L using the impregnation method. The three variations of adsorbent were applied to reduce hexavalent chromium in tannery waste water. Adsorption of chromium hexavalent were optimum at 20 mmol/L HDTMAB. The optimum adsorbent cationic was characterized using FTIR, SEM and BET spectrophotometer and applied to leather tanning waste.
Reactive Black-5 Removal by Ozonation as Post Treatment
Authors: Wantoputri NI , Notodarmojo S , Helmy Q
Published: June 2019

The textile industry is one of industries that growing rapidly in Bandung, Indonesia. It discharges enormous quantity of highly colored wastewater due to the use of water in large quantity and the use of dyes in the production process. One of the problems in processing textile wastewater with conventional biological treatment method is the ineffectiveness of color removal. A further treatment as post treatment is needed for treated wastewater discharge to remove the color. One of the method that known has high efficiency for textile color removal is by using ozonation method. In this ongoing study, the decolorization of artificial textile wastewater containing azo dye reactive-black 5 (RB5) from secondary treatment was investigated in a continuous system. Artificial treated textile wastewater from secondary biological treatment is made using 5 mg/L azo dye RB5 in 16 L volume batch reactor. The experiments show that the efficiency of color removal achieved is 100% within 10 minutes of reaction time with 24.66 mg/minutes of ozone dosage. In continuous system operation, ozonation process also conducted in 16 L volume reactor with up flow and down flow of influent feeding and HRT 10 minutes, 30 minutes and 50 minutes. The experiments show that the color removal was fluctuated and for medan oscillation in certain interval contact time for each HRT, but higher color removal efficiency achieved in HRT 50 minutes.
Performance of Rhizomucor Miehei in Amidation Reaction for Fatty Monoethanolamide Synthesis Based on Distillated Palm Fatty Acid
Authors: Kurniasih E. , Fachraniah
Published: June 2019

Lipase is a type of biocatalyst that can work with substrates of lipid classes. Rhizomucor meihei is of lipase enzymes classes, that can react specifically with Palm Fatty Acid Distillate (PFAD) forming fatty monoethanolamide. Monoethanolamide surfactants are compounds which are widely used in the cosmetics industry as emulsifiers. Monoethanolamide having OH- groups, so it is easily soluble in water. Monoethanolamide can be produced from fatty acids with monoethanolamide using alkaline catalyst or a biocatalyst. Production using chemical catalysts will involve high reaction temperature reaches 120°C-150°C, while the reactions involving biocatalysts are like enzyme can be done at a relatively low temperature. This research was conducted by using amination reaction with 3 independent variables i.e. amination temperature at the level of 30°C-70°C, the mole ratio of PFAD: Monetanolamina at (1:1) - (1:20) and ratio of enzyme at 0.05%-0.5% (w/w) and reaction time of 4 hours. The research results show that the Rhizomucor meihei give the best performance at the level of temperature 60°C, ratio mole (1:4) and the ratio of enzyme 0.2% (w/w) with a conversion product of 86.25%.
Analysis of Air Cooling (AC) System Auditorium Venue Third Floor Main Building of Politeknik Negeri Lhokseumawe
Authors: Syamsuar  , Ariefin  , Sumardi
Published: June 2019

The aims of this study are to calculate the cooling load system on the auditorium space of Politeknik Negeri Lhokseumawe (PNL). This calculation is expected to contribute the energy savings is the system of air (STU). This study is conducting on the third floor of PNL, at the Auditorium venue. The cooling load system by using Cooling load temperature difference (CLTD) system based on ASHRAE Handbook Fundamental, 1993. The calculation of cooling load based on secondary date, and then the result was compared to cooling load installed capacities. The result of the research found that the maximum cooler burden at culminate condition is equal to 116957 Btu/hr (9,74 ton of refrigerant), While the installed refrigeration capacities is 61080 Btu/hr (5,09 ton of refrigerant), here fond a lacking (decreasing) of refrigeration burden equal to 55857 Btu/hr (4,65ton of refrigerant}. If the installed burden (load) as according to re-calculation result, hence thrift gap still can be obtained equal to 14%, by paring down the illumination of light; altering set temperature pint in room; minimizing SC (Shading of coefficient); and lessen of infiltrate external air.
Study of Interlocking Brick Costing Based on The Result of Mixed Material Variation Design
Authors: Malahayati Nurul , Hayati Yulia , Nursaniah Cut , Firsa Teuku
Published: June 2019

Interlocking brick is a material that is used for wall filler with the method of installation interlocked with each other. This material can also be used as a substitute for reinforced concrete structures like sloof, columns and ringbalks, thus do not need to be plastered and painted because of its attractive appearance. The use of interlocking brick can save costs and time in the performance compared to using red bricks. The mixture of the forming material consists of cement, silt and river sand sourced from Aceh Besar District, Aceh Province, Indonesia. In general, industries that produce wall fill material do not differentiate their production for wall functions as structural or non-structural and tend to overall to one quality product classification quality. This research aims to analyze the costs for the requires interlocking brick in building houses that function as structural and non structural walls. The interlocked brick function is distinguished against structural and non structural based on the compressive strength test at 28 days in the laboratory of the structure and building materials, Department of Civil Engineering, Faculty of Engineering, Syiah Kuala University. Mix design is carried out in the laboratory with a cement water factor (FAS) 0.3; 0.4; 0.5 and 18 mixed material variations with 15 specimen test for each mixture. Test objects used is 50 x 50 x 50 mm. FAS 0.4 and a mixture of material 1:2:2 and 1:2:4 are selected because meet the required workability and have a hollow concrete brick compressive strength, which are including quality levels 1 and III with an average compressive strength of 89.6 kg / m3 and 37.5 kg / m3 at the age of concrete reaching 28 days. Cost analysis is carried out by simulating the required need for interlocking brick in type 36 house buildings that can withstand structures and non-structures, then the costs of IRD 11,810,470.,- is obtained. So the use of interlocking bricks can be considered as an alternative environmentally friendly building materials with low cost.
The Behavior of Modified Long Links with Supplemental Double Stiffeners on Eccentrically Braced Frames
Authors: Musbar
Published: June 2019

Initial failure of long links caused by fracturing and buckling occurs on the flange and web at the end of the link. Local damages are caused by the influence of the dominant bending moments compared to shear forces. The advantage of using long links includes allowing for larger openings in rooms, which makes it popular among architects. Efforts to prevent these specific failures are not covered in the rules and there are few researchers that examine improving the performance of long links. The focus of this study is to provide information on using supplemental double stiffeners at the ends of the link without changing the long link behavior. The behavior of long links is maintained by keeping the flange failures on the flange at the end of the link. The supplemental double stiffeners improve the performance of the long link by extending the inelastic zone and slowing the failure rate of the flange. This experimental study was carried out on four models of the long link consisting of a standard model and a model modified by the addition of supplemental double stiffeners at the flange. Long link models were modified with variable thickness and holes width on the supplemental double stiffeners. The results showed that the addition of the supplemental double stiffeners improved the performance of long links compared to the standard link that is in accordance with the requirements of AISC 341-10. The supplemental double stiffeners are an alternative to improved long link performance, making it more effective in the application of its use in steel construction.
Design Tools of Electric Applications Kwh Printing by Short Message Service
Authors: Salahuddin  , Basyir M. , Tusannalaila Sharifah
Published: June 2019

The prepaid electric meter is an electrical measuring and recording device used by customers with a prepaid system or so-called prepaid. A system that is able to recharge electric vouchers automatically using SMS and notification to the customer that the balance of electricity will be exhausted. This system is built using SMS gateway method by using GSM sim900 modem. When the power balance is below 10 KWH then the alarm will sound, at the same time the microcontroller will send SMS and miscall to customer’s mobile number
Variety of packaging and estimated shelf life of Acehnese traditional food (pliek u)
Authors: Amanda Vivi , Sulaiman Ismail , Yunita Dewi
Published: June 2019

Pliek u is the result of natural fermentation in coconut meat which is separated from the oil through a pressing process. This fermentation products become an inseparable part of the daily food of the Acehnese people. Utilization of pliek u is used as additional ingredient in vegetables but some are used as rujak ingredient. This research aims to determine the shelf life of containers that are packed with a variety of packaging namely aluminum foil packaging, plastic pouches and glass bottles with acceleration (Arrhenius) method which is simulated on four storage temperature conditions in the incubator (30°C, 35°C, 45°C and 55°C). The parameters observed during storage process are moisture content, rancidity, total cell count, organoleptic (color and aroma). The results showed that the determination of product shelf life was rancidity parameter (zero order reaction) with linear Y = 0,8894x – 6,5804. The shelf life of pliek u is one year three months and four days at 35°C with a plastic pouch. the highest water content was obtained at 21 days storage in aluminum foil packaging while the total cell count and organoleptic with the color and aroma parameters produced will determine the quality of the pliek u.
Receiver Apps Development for Emergency Reporting System Based on Android Platform
Authors: Basyir M , Mellyssa W , Suryati S , Munawar M
Published: June 2019

Emergency reporting application receiver was built to make emergency services office receive and respond emergency reporting reports easier. User interface of receiver application was designed simply so that users can easily use this application. Recipient application is an android-based application with 4 main pages are login, inbox, history and profile of main service office pages. The reports who sent by sender will go to inbox page, the recipient can respond the report using 2 features, text and phone features. The response given by the recipient will be stored in the response history page. By enabling the GPS feature, receiver’s device can directly access the place of sender so recipient can locate the reporter’s location easy. This is the main purpose of developing an emergency reporting application, facilitating sender and receiver to get emergency information, so assistance can be provided immediately. Reporting applications can be used by people who connected to internet connections while receiver applications are used by emergency services office such as firefighters, police stations, ambulances, car caches, terrorists and search and rescue (SAR).
Reinforcement of The Local Original Revenue Through Sharia-Based Tourism in North Aceh - Indonesia
Authors: Zulkarnaini  , Zuarni  , Arifai Muhammad
Published: June 2019

This study aims to analyze the potential tourism of Blang Kolam waterfalls in Aceh Province which is located in North Aceh District - Indonesia, where it is a possibility of development can be reconstructed in order to increase the value of Local Original Revenue. The independent variables studied are very relevant to the research objectives which consist of the environmental dimensions of tourism, sharia-based profit-sharing system, and the application of creative economy. The data analysis is multiple regression using purposive sampling method which includes local governments that have authority in executing budgets, well-known universities, well-known mass media, active non-governmental organizations and influential community components around tourist sites. Based on the criteria that have been determined, the number of respondents selected is 575 people. The results have shown that both simultaneously and partially, dimensions of the tourism environmental dimension, sharia-based profit-sharing system and the application of creative economics have had a significant effect on the value of the Local Original Revenue. In general, the results of this study have shown that the local government still has a huge opportunity to reconstruct the tourism potential of Blang Kolam waterfalls which is able to stimulate an increase in the value of Local Original Revenue. However, if we look more deeply at the indicators under study, particular in the North Aceh District, government must be more intensive to organize the community environment and pay attention to a more compatible pattern of revenue sharing and continue to look for more creative formulations in encouraging the creation of community creativity. In addition, through the acceptance of the value of Local Original Revenue, it is expected that the local government can allocate the funds for potential programs to encourage local independence.
Analysis of the Overall Equipment Effectiveness (OEE) to Minimize Six Big Losses of Pulp machine: A Case Study in Pulp and Paper Industries
Authors: Sayuti M , Juliananda  , Syarifuddin  , Fatimah
Published: June 2019

Overall Equipment Effectiveness (OEE) is a method of measuring the effectiveness of the use of equipment. This method is known as an application of a Total Productive Maintenance (TPM) program. The ability to clearly identify the source of problem and it causal factors is the main advantage of this method since the improvement effort becomes focused. Pulp and Paper Industries is one of the manufacturing companies that produce dissolving pulp products (rayon fibre). Based on data from the fibre line department, for the period of January - July 2016, the production process of rayon fibre often experienced constraints due to the high downtime and losses in the pulp machine. This resulted in the use of production process equipment that had not been optimal. It is important to find out the source of the problem and its causal factors before the company makes any improvement effort. This study aims to identify equipment losses and measure the achievement of OEE values in the pulp machine. The measurement result shows that the average of the effectiveness of pulp machine for the period of January - July 2016 was 74.01% and based on Japan Institute Of Plant Maintenance (JIPM) the value has not reached the standard that is > 85%, however, there is still possibility for improvement. The losses that give the most significant effect on the overall equipment effectiveness of the pulp machine is reduce speed that was equal to 27.6%. One way to minimize the losses is by maintaining the actual speed of operation and maintaining wear on each pulp machine roll.
Wi-Fi and GSM Based Motion Detection in Smart Home Security System
Authors: Munawir  , Ihsan Ahmad , Mutia Eka
Published: June 2019

WiFi and Global System for Mobile Communication (GSM) based the smart home security system is a system that designed to improve security in most private housing. The main devices in this research are sensor for motion detection using Passive Infrared Sensor (PIR), Arduino Mega2560 as microcontroller board, NodeMCU V3 ESP8266 as WiFi development board that helps to prototype IoT product with few Lua script lines, or through Arduino IDE and then SIM800L as GSM module that also features GPRS support. The detection of motion is based on the principle of infrared radiation produced by human body heat which triggers a Passive Infrared Sensor (PIR). When the microcontroller received and processed the signal from human motion, then the trigger the buzzes the alarm, the microcontroller also activates the GSM module and sends SMS message to the user’s mobile phone device. This system enables to control the home by using android device, such as door, garage, and lamp in the rooms.
Fuel and O&M Costs Estimation of High Temperature Gas-cooled Reactors and Its Possibility to be Implemented in Indonesia
Authors: Budi RFS , Rijanti AP , Lumbanraja SM , Birmano MD , Amitayani ES , Liun E
Published: June 2019

This research discussed an estimation of High Temperature Gas-cooled Reactor (HTGR) O&M and fuel cost and the potency of HTGR implementation in Indonesia. The cost estimation was done by using scaling method. The O&M and fuel cost compared with the O&M and fuel cost from others power plants. By using the comparison, it could be known that HTGR potentially could be used or not. This research’s purposes were to obtain an estimation of HTGR O&M and fuel costs for various capacities and to know the possibility of HTGR implementation in Indonesia. The results showed the O&M costs were 59.78 million USD for 600 MWth, 56.63 million USD for 350 MWth, 52.04 million USD for 50 MWth, 51.62 million USD for 30 MWth, and 51.10 million USD for 10 MWth. The fuel costs were 57.28 million USD for 600 MWth, 33.41 million USD for 350 MWth, 9.55 million USD for 100 MWth, 4.77 million USD for 50 MWth, 2.86 million USD for 30 MWth, and 0.95 million USD for 10 MWth. Based on the comparison with fossil power plants in Indonesia, due to the fuel and O&M cost of HTGR were less than or nearly same with the fuel and O&M cost of fossil power plants, it could be concluded that HTGR 600 until 30 MWth had high possibility to be implemented in Indonesia.
Evaluating the Quality of Emergency Reporting Mobile Application on Usage Service Decision
Authors: Basyir Muhammad , Mellyssa Widdha , Suryati  , Munawar
Published: June 2019

Emergency Reporting Mobile Application is an android-based application that was built to provide convenience to the public in reporting emergency conditions. This application is divided into 2 end-user applications, there are the sender application and the receiver application. The sender application pages consist of the registration page for new users, pattern lock as security, and the preferred service page. The receiver application pages consist of the login page, inbox page, history page and profile of main service office page. The application has been developed and an assessment of the quality of the application is needed to improve the use of the application. Therefore, this study aims to evaluate applications on the sender side. The evaluations of the analysis result are needed as recommendations for future application development. The evaluation of the application use usability instruments which consist of components of effectiveness, efficiency and user satisfaction. The research was conducted by distributing the SUS (System Usability Scale) questionnaire to 20 respondents and each statement was given a weight based on the Likert scale. The results showed that the application was in the excellent category and could be accepted by the community.
Determination System of Single Tuition Group Using a Combination of Fuzzy C-Means Clustering and Simple Additive Weighting Methods
Authors: Indrawati  , Anwar  , Amalia Nova
Published: June 2019

Single Tuition is a single tuition fee that is borne by each student every semester based on their economic ability while Single Tuition fee is the total operational cost of each student every semester in the Study Program at State Universities. Determination of these fees is calculated based on several criteria such as the work of the father, the work of the mother, the income of the father and mother, the number of dependents of parents, the status of parents, the vehicle owned, taxes borne by parents, and several other criteria. How to calculate and determine the single tuition fee for each student is done manually, so that problems arise that are not efficient with time and cost. Therefore, in this study, a computerized single money determination system was created by making a decision support system that was able to automatically determine the Single Tuition group. Several studies have been conducted relating to this decision-making system, including the methods used such as Multi-Attribute Decision Making, Data Mining, and AHP. In this study using a combination of Fuzzy C-Means and Simple Additive Weighting methods to determine the Single Tuition Fee. Fuzzy C-Means groups the same data into one group, while Simple Additive Weighting performs a weighted sum with a performance rating on each alternative on all attributes. The study used 13 criteria and 62 sub-criteria as parameters in determining the Single Tuition group. From the results of testing 73 test data, it is known the results that in this test the number of clusters is 8 pieces, the number of weights is 2, the iteration is maximum 100, the smallest iteration is 0.01 and the initial iteration 1. The result is known that the decision-making system succeeded in ranking with a margin error 0 - 0.01.
Corrosion Assessment using Advanced Ultrasonic Measurement Technique
Authors: Jamil Jeffry , Yahya Syed Yusainee Syed
Published: June 2019

This paper describes the remaining wall thickness assessment using Ultrasonic Testing Phased Array (UTPA) technique. A steel plate of thickness 15 mm consists of machined simulated corrosion with various thicknesses, depths, shapes, and sizes were used in this work. Manual corrosion scanner is attached with GE Phased Array (PA) thirty-two elements (transmitter and receiver) Dual Matrix probe of 5 MHz with 1.5 mm pitch is used. The scanner then applied firmly on the plate to execute the inspection. From the result, the relevant indications from the A, B and C-Scans display are collected and analysed. The outcome of the study revealed that UTPA technique is capable to collect a high density of measuring point of thickness compared to the conventional UT technique such as Ultrasonic Testing Thickness Gauge (UTTG).
Investigation of the effect of metallic screens on image quality in gamma computed radiography
Authors: D’Ademo N.
Published: June 2019

The role of metallic screens in computed radiography for controlling scattered radiation is very well-known. Likewise, the intensification effects of certain lead screen thicknesses with higher X-ray energies, such as those produced by gamma isotopes is also a topic that has been recently investigated in literature. This paper extends this topic further and quantitatively investigates how image quality in terms of signal-to-noise ratio (SNR) and basic spatial resolution (SRb) is influenced by metallic screens when Iridium-192 is used as the radiation source. The result data is then used to make recommendations to achieve optimum image quality when using Iridium-192.
Radiographic simulation and validation studies on weld joints of annular tanks and cylindrical tanks
Authors: Kumar S. , Menaka M. , Venkatraman B.
Published: June 2019

The application of the radiographic simulation studies on the weld joints in nuclear fuel reprocessing tanks used for optimization of radiographic testing parameters. In the nuclear reprocessing plant, Annular and cylindrical tanks are used to store the reprocessed solution of the spent fuel pins from the reactor. These annular and cylindrical tanks were installed 15 years ago. AERB (Atomic Energy Regulatory Board) has requested for requalification of these tanks before commissioning. As part of the requalification of tanks, the volumetric NDE techniques were proposed to be used for evaluation of the weld joints in the tanks. Before carrying out the radiographic examination on the actual tanks, computer simulation of radiography was studied on standard weld pad. Radiographic simulation is utilized for various purposes in NDT. This radiographic diagnostic model utilized for study about incorporates a description of the radiation source, the interaction of radiation with test pieces and defects, and the detection process. The modeling results were validated with radiographic inspection carried out with weld pad sample of 6mm thickness. The error percentage in the optical density achieved between simulation and experiment radiographic inspection was ± 5%. Hence the optimization parameters using simulation for the weld pad helps to reduce the number of exposures, inspection time and increase defect detectability of the inspection.
Metric geometry and the determination of the Bohmian quantum potential
Authors: Bracken Paul
Published: June 2019

A geometric approach to quantum mechanics which is formulated in terms of Finsler geometry is developed. It is shown that quantum mechanics can be formulated in terms of Finsler configuration space trajectories which obey Newton-like evolution but in the presence of an additional kind of potential. This additional quantum potential which was obtained first by Bohm has the consequence of contributing to the forces driving the system. This geometric picture accounts for many aspects of quantum dynamics and leads to a more natural interpretation. It is found for example that dynamics can be accounted for by incorporating quantum effects into the geometry of space-time.
If Invalid PVT Scores Are Obtained, Can Valid Neuropsychological Profiles Be Believed?
Authors: Loring David W , Goldstein Felicia C
Published: June 2019

Background

Performance Validity Testing (PVT) decision-making rules may be indeterminate in patients with neurological disease in which PVT characteristics have not been adequately studied. We report a patient with multiple sclerosis (MS) who failed computerized PVT testing but had normal memory scores with a neuropsychological profile consistent with expected MS disease-related weaknesses.

Method

Neuropsychological testing was conducted on two occasions in a middle-aged woman with an established MS diagnosis to address concerns of possible memory decline. Testing was discontinued after PVT scores below recommended cut-points were obtained during the first evaluation. During the second assessment, subthreshold PVT scores on a different computerized PVT were obtained, but unlike the first assessment, the entire neuropsychological protocol was administered.

Results

Despite subthreshold computerized PVT scores, normal learning and memory performance was obtained providing objective data to answer the referral question. Other neuropsychological findings included decreased processing speed, poor working memory, and poor executive function consistent with her MS diagnosis. Embedded PVT scores were normal.

Conclusions

We speculate that poor computerized PVT scores resulted from the disease-related features of MS, although we also discuss approaches to reconcile apparently contradictory PVT versus neuropsychological results if the contributions of disease-related variables on PVTs scores are discounted. This case demonstrates the value of completing the assessment protocol despite obtaining PVT scores below publisher recommended cutoffs in clinical evaluations. If subthreshold PVT scores are considered evidence of performance invalidity, it is still necessary to have an approach for interpreting seemingly credible neuropsychological test results rather than simply dismissing them as invalid.
Working with and Negotiating ‘Risk’: Examining the Effects of Awareness Raising Interventions Designed to Prevent Child Sexual Exploitation
Authors: Weston Samantha , Mythen Gabe
Published: June 2019

This article considers the effects of an educational intervention with young people designed to reduce the risk of child sexual exploitation (CSE). Drawing on findings from a qualitative study, we consider processes of engagement with the initiative, the relevance of the strategy adopted by the delivery team and the impacts on the perspectives of young people targeted. Focusing on mutually constitutive problems of context sensitivity, recognition of ambiguity and the silencing of alternative narratives, we raise several critical caveats that should be considered in the design and implementation of future CSE awareness raising initiatives. Overall, we aver that an unstinting focus on individual behaviour management unduly responsibilizes young people and draws inflexible demarcation lines between appropriate and inappropriate sexual conduct.
Successful catheter ablation of premature ventricular contractions triggering torsade de pointes in a small infant with histiocytoid cardiomyopathy: a case report
Authors: Hirano Yasuhiro , Aoki Hisaaki , Ichikawa Chihiro , Kayatani Futoshi
Published: June 2019

Background

A short-coupled variant of torsade de pointes (ScTdP) is rare and resistant to medical treatment. There has not been a reported catheter ablation (CA) of a short-coupled premature ventricular contraction (PVC) triggering ScTdP in an infant.

Case summary

A neonate was referred to our hospital on the day of birth for Wolff–Parkinson–White syndrome, repeated episodes of supraventricular tachycardia, and a left ventricular non-compaction. She underwent CA of an accessory pathway at 72 days of age. On the 5th day after ablation, she had recurrent TdP episodes resistant to various antiarrhythmic drugs and received extracorporeal membrane oxygenation at 86 days of age. She underwent CA of PVCs triggering TdP at 122 days of age and a weight of 3.4 kg. Two types of PVCs triggering TdP were successfully ablated, which originated from the right ventricle (RV). Pre-potentials were recorded at the earliest ventricular activation sites of the targeted PVCs. After the ablation, she had no TdP episodes and the cardiac assist device was removed. However, she died of uncontrolled heart failure at 6 months of age. The histological findings were compatible with histiocytoid cardiomyopathy and abnormal cells were distributed throughout both ventricles. At the ablation site, fibrotic transmural lesions were noted in the RV wall.

Discussion

The PVCs triggering TdP were successfully ablated in a 4-month-old girl with histiocytoid cardiomyopathy. The PVCs were likely caused by triggered activity and associated with abnormal Purkinje cells.
Forecasting crude oil futures prices using global macroeconomic news sentiment
Authors: Sadik Zryan A , Date Paresh M , Mitra Gautam
Published: June 2019

We propose a method of incorporating macroeconomic news into a predictive model for forecasting prices of crude oil futures contracts. Since these futures contracts are more liquid than the underlying commodity itself, accurate forecasting of their prices is of great value to multiple categories of market participants. We utilize the Kalman filtering framework for forecasting arbitrage-free (futures) prices and assume that the volatility of oil (futures) price is influenced by macroeconomic news. The impact of quantified news sentiment on the price volatility is modelled through a parametrized, non-linear functional map. This approach is motivated by the successful use of a similar model structure in our earlier work, for predicting individual stock volatility using stock-specific news. We claim the proposed model structure for incorporating macroeconomic news together with historical (market) data is novel and improves the accuracy of price prediction quite significantly. We report results of extensive numerical experiments which justify our claim.