bluuebunny/crossref_metadata_2025_split huggingface dataset:
Graphene Nanosheets (GNs) Addition on the Palm Oil Fuel Ash (POFA) Based Geopolymer with KOH Activator
Authors: Amri Amun , Hendri Yola Bertilsya , Zultiniar  , Malindo Eri , Rahman M Mahbubur 
Published: December 2019

Abstract
Graphene Nanosheets (GNs) have been successfully added to the palm oil fuel ash (POFA) based geopolymer with KOH activator to improve the geopolymer compressive strength. The graphene was synthesized using turbulence assisted shear exfoliation (TASE) method and identified using Raman spectroscopy. The influence of concentrations and weight percent of graphene against the compressive strength, porosity, and morphological properties were investigated. The crystallinity phases of geopolymer and graphene were also identified using XRD. Raman spectroscopy revealed that graphene produced by TASE method had ≥ 3 layers (graphene nanosheets, GNs). Furthermore, Raman maping constructed by the intensity D band showed the graphene had different atomic arrangements at the edge (armchair and zigzag). The compressive strength and the porosity tests showed that increasing the concentration and the weight percent of graphene increased the compressive strength and reduced the porosity. The highest compressive strength and the lowest porosity (10.8 MPa and 5.92%, respectively) were exhibited by the geopolymer synthesized using 0.7 wt% graphene with concentrations of 30 mg/ml. The SEM micrographs indicated that the graphene reduced the porosity of geopolymers with a pores fulfilling mechanism due to of very small of graphene nanosheets size (∼60 - ∼80 nm).
The Effects of Zn/Natural Zeolite Ratio and Adsorbent Calcination on H2s Adsorption in Biogas on the Processing of Palm Oil Mill Effluent (Pome)
Authors: Manullang Freddy , Ahmad Adrianto , Andrio David 
Published: December 2019

AbstractBiogas is a renewable energy source derived from organic material that is anaerobically degraded by bacteria in an oxygen-free environment. The main components of biogas are methane (CH4) and carbon dioxide (CO2). In addition, there are other relatively small amounts of gas, namely nitrogen (N2), hydrogen sulfide (H2S) and hydrogen (H2). The quality of biogas that is non-optimal can be improved by separating or eliminating impurity gases, one of which is hydrogen sulfide (H2S). Hydrogen sulfide (H2S) is a poisonous and odorous gas that causes corrosion, so it needs to be reduced in biogas. Hydrogen sulfide (H2S) in biogas can be reduced by adsorption methods using modified natural zeolites. The purpose of this study is to determine the effect of the natural Zn/zeolite impregnation ratio and the effect of the adsorbent calcination temperature on biogas purification and determine the concentration of hydrogen sulfide (H2S) from biogas purification. The adsorbent is synthesized with variation: natural Zn/zeolite ratio of 10%, 20%, 30% w / w and calcination temperature of 200°C, 300°C, 400°C. Adsorbents are characterized using X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). The result of this research show that the optimum adsorption capacity of hydrogen sulfide (H2S) in biogas is obtained at a variable ratio of Zn/zeolite natural 20% and calcination temperature of 300°C is 6.36 mg S g adsorbent and H2S can be purified or adsorbed up to 99%.
Climate Change: How is the Adaptation of Public Health Services? Case Studies in the City of Padang
Authors: Sari Putri Nilam , Djafri Defriman , Gusti Aria 
Published: December 2019

Abstract
Although the implications of climate change for public health continue to be explained, Indonesia still needs a lot of work to guide the development of comprehensive strategies to support health system adaptation. Existing regulations have not been able to increase the participation of Public Health Centers (PHCs) as first-level services to reduce problems that will arise due to the climate. The purpose of this paper is to see the extent of adaptation by PHCs to deal with climate change. This research was carried out by observing the indicators of the adaptation of the PHCs, in-depth interviews and review of related documents in three PHCs. The finding indicates that adaptation activities that need to be improved by PHCs are early warning systems about drought risk, collaboration with institutions concerned with climate change, and participation in reducing greenhouse gas emissions by using a pro-environment transportation system. In conclusion, the adaptation systems of PHCs have begun to be good, but there is no special attention to the risk of climate change that will be increasing in the future.
Investigating the Food-Based Domestic Materiality of Nuaulu People, Seram Island: The Multiple Roles of Sago
Authors: Suryantini R , Paramita KD , Yatmo YA 
Published: December 2019

Abstract
This paper employs the perspective of food as the basis of understanding domestic materiality in a vernacular context. Current discourse of domestic materiality tends to perceive understanding of material within a localised and enclosed context. Food demonstrates a potential to expand such arrangement, bridging the connection between domestic and the wider context, arguably demonstrating a better understanding of sustainable materiality Similarly, the study’s focus on vernacular context is also influenced by the multiple roles of food in such a context, demonstrating a tight strong interrelationship of nature and culture.
This paper focuses on the exploration of food-based of domestic materiality of the Nuaulu people, employing data from a field observation in the Sepa and Rohua Village, Seram Island. Sago becomes the particular focus of this study as it is a significant native plant that is used both for the sustenance and social-cultural life of the Nualu people. The study highlights the rituals, social process, and territorialisation aspects happening in sago related activities in the tribes. This paper highlights that the interrelationship of these aspects demonstrates a sense of identity for the Nuaulu people, arguably illustrating the multidimensional and sustainable characteristics of sago as part of the tribe’s domestic materiality.
Visit Results Reporting System from External Parties in Adira Finance Using CodeIgniter
Authors: Azdy Rezania Agramanisti , Suwarno Muji , Sepudin  
Published: December 2019

Abstract
The Palembang branch of Adira Finance has its own procedures in handling its overdue customers, namely customers who do not make installment payments, based on the time of late payment. One of the measures taken is to collaborate with third parties to make visits to overdue customers. This study aims to build a system that can be used by third parties for conveying information in the form of results of visits that have been made to overdue customers. System development is carried out by prototype method to obtain the results of a system that suits the needs of its users. The results of the study are a system that can be used by three types of users, namely admin, external party, and executor. The system can be used to divide the assignment of customer visits to the external, and each external can continue the assignment to the executor. Both external and executor can report the results of their visit to the system.
Embedding the Operating System : a Case Study LMDE 3 on a USB Flash Drive
Authors: Tarigan I J , Sihombing P , Sirait P , Sembiring R W , Simanjuntak H E 
Published: December 2019

Abstract
The Operating system is growing rapidly in the era of information technology and the particular Desktop Operating System, one of the desktop operating system is LMDE 3 “Cindy” Linux-based, this research will discuss 2 techniques for embedding operating system (EOS) LMDE 3 Live-USB and permanent installation on a USB Flash Drive, and test performance.
DEA and Fuzzy Simple Additive Weighting for Benchmarking Qualitative Data
Authors: Abdullah Dahlan , Hartono H , Ongko Erianto , Erliana Cut Ita , Irwansyah Defi , Iskandar Akbar , Sari Ayu Esteka , Abdussakir  , Yuniningsih  , Siregar Nurintan Asyiah , Kahar Muhammad Syahrul , Waliulu Raditya Faisal , Amalia Ainna , Kurniasih Nuning , Arifin Muhammad , Muzid Syafiul 
Published: December 2019

Abstract
Data Envelopment Analysis (DEA) is one method that is often used in the benchmarking process. The benchmarking process with DEA is often faced with problems where there is a Decision Making Unit (DMU) both Input and Output which is not in the form of qualitative data but in the form of qualitative data. Qualitative data requires an assessment from the appraiser so that it can become quantitative data. This study will use the Fuzzy Simple Additive Weighting method to convert qualitative data into quantitative. The results of this study will produce a model that integrates DEA with Fuzzy Simple Additive Weighting.
Expert System Diagnosing Disease of Honey Guava Using Bayes Method
Authors: Abdullah Dahlan , Zarlis Muhammad , Pardede A M H , Anum Apipah , Suryani Rini , Parwito  , Hidayati Permata Ika , Susilo Edi , Sofais Danur Azissah Roesliana , Rosyidah Elsa , Surya Sara , Iskandar Akbar , Darmawansyah  , Aprilatutini Titin , Erliana Cut Ita , Setiyadi Didik 
Published: December 2019

Abstract
Honey Guava Fruit (Green Guava Deli) is one of the fruit that are very popular, liked, and consumed by the people. The pProblems that cause a decline in the quality of guava due to honey guava plants can also be attacked by disease. The limited access information about honey guava disease is one of the obstacles, while the number of agricultural experts is still insufficient. In this study a media system will built with an expert system approach. The application development phase begins with the system analysis stage, namely data analysis and system requirements description, building a knowledge base, Data Flow Diagram, Entity Relationship Diagram, and creating a table structure, table design, and interface menu design. After the design phase is complete, it is continued to the implementation and testing phase of the application. This application uses Visual basic. Net as a programming language and Sql Server as a database. The research was conducted to make Honey Guava Disease Diagnosis System Expert System software that can work like an agricultural expert. The system is able to diagnose as many as 3 diseases using the Bayes Theorem method.
Preventing Routing Loop in Routing Distance Vector Protocol using Destination Sequence Distance Vector (DS-DV) Method)
Authors: Pribadi Octara , Robet  , Tarigan Feriani Astuti , Wijaya Hendri Edi , Hendrik Jackri 
Published: December 2019

Abstract
Count to infinity is a problem that appear in the vector routing protocol. This is because, there is a routing loop caused by the nodes structure in the networking that create loop. The destination sequence – distance vector method can be a solution to prevent the routing loop, so that the count to infinity problem can be solved in the protocol routing distance vector.
Analysis Accuracy Of Forecasting Measurement Technique On Random K-Nearest Neighbor (RKNN) Using MAPE And MSE
Authors: Prayudani S , Hizriadi A , Lase Y Y , Fatmi Y , Al-Khowarizmi  
Published: December 2019

Abstract
Forecasting is apply because of complexity and uncertainty faced by high-dimensional data available in the fields of bioinformatics, chemometrics, banking and other applications. A process for systematically estimating what is most likely to happen in the future based on past and present data requires an appropriate forecasting model, so that the difference between what happens and the estimated results can be minimized. To get the right method, a measuring technique is needed to detect the accuracy of forecasting value. In this paper we discuss the technique of measuring forecasting accuracy with Mean Square Error (MSE) and Mean Absolute Percentage Error (MAPE) using the Random K-Nearest Neighbor (RKNN) method. With the two measuring technique for the horizontal modeling above, the smallest MSE and MAPE values are chosen (the smallest error value). From the results of the analysis of the calculation of forecasting accuracy measurement values during training with RKNN, the MAPE accuracy value is 0.728427% and MSE is 0.545751, while the smallest accuracy value is achieved using MSE which is 0.545751.
Design of Microstrip Rectangular Circular Array Antenna 1 x 8 at Frequency of 1800 MHz for Increase Power of 4G signal
Authors: Supriyanto Toto , Nurinsani Ridhwan Khairullah , Firmansyah Teguh 
Published: December 2019

Abstract
Technology of 4G is a cellular technology improved from 3G and 2G which provide network with the bandwidth of 75MHz and operated frequency of 1800 MHz. In a process of receiving and sending information signal, 4G system need antenna as the device functioning to send electromagnetic to the air. When information signal is transmitted, there was possibility that the signal weaken which caused by several factors such as air, building wall thickness and weather. Rectangular circular patch array 1x8 microstrip antenna is an antenna functioning as 4G signal strengthens at the frequency of 1800MHz. Antenna was design by using software of CST Studio Suite. From the result of rectangular circular patch array 1x8 microstrip antenna measurement at the frequency of 1800 MHz, it was obtained that the gained was 7.32 dB, VSWR was 1.208, and return loss was -20.3 dB. Performance test of antenna was conducted for 4 Indonesia’s cellular providers namely Telkomsel, Indosat Ooredoo, XL, and 3 in various places. The test result in PNJ telecommunication laboratory showed that the best average value of RSRP from provider of Indosat Ooredoo was-72.9 dBm, the best average value of RSPP from provider of 3 was -70.7 dBm located in Bambon raya, and the best average value of RSPP from provider of XL was -65.2 dBm located in Cibubur.
Designing Guitar Tuning Software Using Karplus Strong Algorithm
Authors: Abdullah Dahlan , Angkasa Kevin , Hartono H , Fithra Herman 
Published: December 2019

Abstract
Tuning is the process of adjusting strings on stringed musical instruments such as guitars. If the instrument is played frequently, the settings will change. For this reason, the tuning process is usually carried out to get the right settings so when the notes are produced the standard becomes. In addition to how to listen, then tuning can also be used in the tuning process. The tuning technique must also be adjusted because there are usually several types of tuning for musical instruments. The implementation of this paper is design tuning program for musical guitar instruments with tuning settings for 7 types along with 36 tuning types. In addition, this program also provides customized tuning inputs for other stringed instruments.
Smart Control Motor Comp ressor Cooling System For Improving The Efficiency Of Energy Usage Method Of Fuzzy-Pid
Authors: Tohazen  , Belyamin  , Kusnadi  
Published: December 2019

Abstract
Research on the cooling system becomes the concentration that will be carried out, more than 60% of the biggest electricity usage of a building is Air Conditioner (AC). Actually the AC performance itself is set when the room temperature matches the target, the performance of the compressor motor will be turned off. The system to be studied is how to make the AC performance always reach its maximum set point temperature for the room.
In this study an automatic temperature measurement system will be created which will read temperature data continuously in real time and read the power on the Compressor to make a control system so that the use of the Compressor becomes efficient. The reading of temperature data can be seen through mobile devices and via Internet of Things (IoT) technology. This system will automatically calculate the setpoint to get the most optimal energy consumption value. The system will read temperature data on a certain time to monitor AC performance. If it never reach the set point, the system will be taken over to make energy efficiency decisions. This system optimizes AC energy so become one of the energy saving models.
Utility Software Design to Comprehend The Cryptography Cast-128 Method
Authors: Nopriadi  , Iskandar Akbar , Utami Listia , Yandri Okma 
Published: December 2019

Abstract
At present, data security techniques known as cryptography are influential and widely used. There are lots of cryptographic algorithms. The main problem faced by a student taking this course is they difficult to understand the procedures of a cryptographic algorithm due to its complexity and involves many calculations. CAST is a block ciphers belonging to the family of DES (Data Encryption System) that uses substitutions and permutations (known as Substitution Permutation Network or SPN) in key calculations and encryption and decryption processes. The CAST algorithm has two versions, namely CAST-128 and CAST-256 where both are distinguished by the length of the used key. The maximum Key length allowed in CAST is 128 bits or 16 characters. In addition CAST-128 allows key sizes to vary from 40 bits to 128 bits with the addition of 8-bits. While the length of plain text that can be encrypted and decrypted is 64 bits (8 characters) and supports all types of plain text. This study describes the procedures of CAST-128, the design of encryption procedures from CAST-128, calculations from the Key Schedule using Substitution Boxes (S-Boxes), how the CAST-128 encryption and decryption algorithms work, the results of the implementation of the CAST-128 algorithm created a program that also functions as a learning program to understand the CAST- 128 algorithm with the process of key formation, CAST-128 algorithm encryption and decryption.
Impact of Adding Sodium Chloride to Change of Turbidity and Iron Concentration on Treatment Waste Water Using Electrocoagulation Process
Authors: Sutanto  , Rohadi Nanang , Hidjan  
Published: December 2019

Abstract
The treatment waste water of electrical industry was investigated through electrocoagulation process. The study was conducted by flowing of 4,5 liters of waste water into the three cells of electrocoagulation process tank. Each cell is filled 1.5 liters of waste water without adding of sodium chloride (NaCl). The electrocoagulation process is carried out at a voltage of 12 V and interval time for observation of electric current, turbidity and iron cocentration in the water is done every 10 minutes. Subsequently, the same procedure was performed and added the sodium chloride with variation of weight of 0.5, 1.0 and 1.5 gram. To determine change value of electrical current, turbidity, metals pollutant was done using Ampere meter, turbidity meter and AAS respectively. The best conditions are recommended for use 0.5 gram of sodium chloride and 110 minutes for processing time. Under these conditions the voltage of 12 V and the current is 1.13 A. In this condition the turbidity can be removal from 44.10 to 2.35 NTU or 94.33 % and iron concentration from 1.21 to 0.29 mg/L or equal to 76.03 %. In conclusion adding of sodium chloride in simultaneous process of electrocoagulation and strerilization can cause increase of the electric current and accelerate the removal of pollutants in the wastewater.
Improvement of Electrical Grounding System Using Bentonite
Authors: Ismujianto  , Isdawimah  , Nadhiroh Nuha 
Published: December 2019

Abstract
Low grounding resistance ensure the proper operation of lightning protection system. The lower Rg value, the easier current flow through the earth without any obstacles. Lightning protection system can easily have mechanical and electrical damage. Mechanical correction can be done by cleaning the junction from corrosion, repairing the loose junction, or creating a new junction. On the other hand, electrical correction can be done by deepen the electrode and widen the area for lowering the grounding resistance. In this case the most influential in determining the value of Rg is ρ factor. Value of ρ affected by soil conditions, the more humid the soil gets smaller ρ. One of the ways to increase the soil moisture by adding bentonite to the soil. Bentonite is a natural clay containing the mineral montmorillonites; this consists of octahedral coordinated aluminium atoms sandwiched between tetrahedral coordinated silicon atoms. Consideration of using bentonite to improve the value of Rg because bentonite has various good properties including: very low and stable resistivity; abilities to absorb and retain large quantities of water; can swell up to 13 times its dry volume; low cost; it will not gradually leach out because it is part of the clay itself. The result show that the decrement of grounding resistance is around 16% - 48% (average 32%) with deviation standard is 8%.
Investigation of Photovoltaic System Parameters Using LabView in Solar Irradiance Peak Condition
Authors: Isdawimah  , Ismujianto  , Oktariza Lingga Ghufira , Frederik Alvin , Phuoc Loc Nguyen 
Published: December 2019

Abstract
The monitoring of electrical and system parameters such as current, voltage, power, intensity of light, battery, and load in photovoltaic panel is shown in this paper. The system was monitored using LabView Virtual Instrument and NI-DAQ 6008 hardware which are both developed by National Instrument. The parameters of photovoltaic was monitored under solar irradiance peak condition in local area. The system of photovoltaic panel with using monocrystalline and polycrystalline material, each PV have 50 Wp maximal output which is installed as parallel. The PV system is using battery charge regulator to reduce and control the over voltage to the battery. The analysist of the monitoring result is very useful to optimize the parameters and the efficiency of the system. Moreover, it could check the charge controller performance to reduce the over cost which is known as environmental protection. This project will be useful for continuos real time monitoring of solar power plant.
Pre-Test Analysis on Reinforced Concrete Beams with Shear Strengthening using GFRP by Finite Element Method
Authors: Shandy Sary , Hermanto Joni 
Published: December 2019

Abstract
Research on the developments of new materials as well as the methods and techniques of retrofitting structures showed that the Fiber Reinforced Polymer (FRP) is a promising material for use in strengthening reinforced concrete structures. This research aims to model reinforced concrete beams with shear strengthening using GFRP based finite element method. By using computer program Finite Element Analysis (FEA) the modelling was carried out by 2-dimension models on 3 testing material variations namely: the test normal concrete beams without the shear retrofitting (BGN), beams with shear retro fitting using GFRP are continuous on the shear span (BGPF), beams with retrofiting using 3 strips (BGP3S). The research result indicated that generally, the programused can show the behavior closed to the theoretical design result. The ultimate load of results normal concrete beams without the shear retrofiting (BGN) is 76,393 kN, beams with shear retrofitting using GFRP are continuous on the shear span (BGPF) is 77,798 kN, and beams with retrofiting using 3 strips (BGP3S). The results showed that the percentage increase of normal ultimate load of beam with shear reinforcement using GFRP was 1.4%, 11.01%, for reinforced using 3 strips (BGP3S). This indicated that the material behavior response produced from simulation study can well be described by the program.
Evaluation of Updated Volume-translation Peng-Robinson Model for Estimating Volumetric Properties of Hydrocarbon Mixtures at High Pressure High Temperature
Authors: Orodu K. B. , Orodu O. D. 
Published: December 2019

Abstract
A volume-translation function by the authors with arguments of reduced pressure and temperature was assessed for binary and multicomponent mixtures. The correlation is not a generalised function and reduced-pressure as an argument. Thereby, ensuring high performance at high pressure and temperature (HPHT) in the class of other volume-translation function for cubic equations of state. The function was compared to non-cubic equations of states (nCEoS) of PC-SAFT, GERG-2004, GERG-2008 and AGA8-DC92 for the prediction of molar-volume at HPHT with reasonable results.