Jurnal Ilmiah Giga最新文献

{"title":"Pengaruh Penggunaan Pelat Elektroda Tekstur terhadap laju Produksi gas pada Generator HHO","authors":"A. Asmawi, MUHD. Ridzuan Bin Mansor, Noreffendy Tamaldin, V. V. R. Repi, A. Sudrajat","doi":"10.47313/jig.v25i2.1974","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1974","url":null,"abstract":"<p>SS316L<em> iron plate is a material that is often used in construction on machinery. In this study, </em>6<em> sheets of </em>SS316L<em> plates as electrode plates measuring </em>100 mm × 100 mm<em> were assembled into a spacer shape arranged parallel to the distance of 2 mm. The </em>SS316L<em> electrode plate consists of two types, namely the original electrode plate or flat plate and the electrode plate through a treatment process where the surface is made of lines </em>(<em>texture</em>)<em>. Both flat and textured electrode plate is formed into a spacer which then inserted to the </em>HHO<em> generator as the main component in the water electrolysis process. Measurements and calibrations are performed on each </em>HHO<em> generator with flat electrode plates and textured electrode plates with </em>KOH<em> catalyst </em>10<em> grams, </em>20<em> grams and </em>30<em> grams. The results of the calibration of the two types of HHO generators show that the </em>HHO<em> generator with texture plates is better than the flat plate with an average value of </em>1.03 L<em>/minute</em>.</p>","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134473375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluasi Sistem Proteksi dan Koordinasi Relai Arus lebih Gedung Mall XYZ Menggunakan ETAP 19.0.1","authors":"Fuad Djauhari, I. Kusuma, Endang Retno Nugroho","doi":"10.47313/jig.v25i2.1915","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1915","url":null,"abstract":". Large buildings require optimal electrical protection. Short-circuit events are the most common occurrences. If there is a short-circuit fault on one of the feeders, the circuit breaker whose position is upstream from the fault center must work ahead of the circuit breaker whose position is upstream from the short-circuit fault center. The problem that occurs in the XYZ Mall Building is the opposite. When there is a short circuit current, it will cut off the main connector. As a result, some of the building's electricity will also go out. The purpose of this study is to regulate the coordination of relay protection repeatedly in this building. The study will evaluate the existing electrical Single Line Diagram of the XYZ Mall Building and perform simulations with the help of ETAP 19.0.1 software. The simulation results get the value of the protection system that has been adjusted where the curves of each relay do not intersect with each other so that the coordination of each relay is safe, with the standard time delay setting of 0.2 to 0.4 seconds. To overcome the problem in the XYZ Mall building, the relay that is not suitable must be set manually according to the simulation results to prevent tripping some of the buildings in the event of a short circuit fault.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121346210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perancangan Antena Pesawat Tanpa Awak Menggunakan ANSYS High-Frequency Structure Simulator","authors":"Ruliyanta Ruliyanta, Muhammad Fahrurozi, Herry Satria Utama","doi":"10.47313/jig.v25i2.1914","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1914","url":null,"abstract":"<p class=\"Abstract\"><span lang=\"EN-US\"><em>Using crewless aircraft or Unmanned Aerial vehicles </em>(UAV)<em> is rife in the civil and military world. The problem that often occurs is that the </em>UAV<em> has disconnected from the control center. One of the reasons was that the aircraft was operating outside the radio control center's range. This study aims to design a control antenna with a higher gain than the previous research antenna, which is used as a reference. The method we used is designing a </em>2×8<em> circular array microstrip antenna using the Ansys high-frequency structure simulator </em>(HFSS)<em> software. The result gives a return loss value of -30.25 dB, a voltage standing wave ratio </em>(VSWR)<em> of </em>1.11<em>, and a bandwidth of </em>512,1 MHz<em>. The amount of gain is </em>12.94 dB.<em> The magnitude of the reflection coefficient of the designed antenna is </em>0.017.<em> This value means that the amount of power reflected by the designed antenna is </em>1.7%,<em> or the antenna is capable of capturing signals of up to </em>98.3%.</span></p>","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125877635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analisis Risiko (K3) Metode Hazard Identification Risk Assesment And Risk Control (HIRARC) di Departemen Laboratorium PT. ABC","authors":"Moh. Fikri Pratama, Elly Ismiyah, Akhmad Wasiur Rizqi","doi":"10.47313/jig.v25i2.1922","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1922","url":null,"abstract":". PT. ABC is a company that produces cooking oil and margarine whose products are well known throughout Indonesia, located in the city of Gresik, East Java. The main basic ingredient in manufacture of cooking oil and margarine is CPO ( crude palm oil ) which will be proceed at refinery and fraction stages. During the production process, quality control is carried out in order to get maximum results from raw to finished goods in Laboratory. In laboratory department, work accidents often occur, whether are low, medium or very hight. There are many potential hazards and risks due to direct contact with chemicals such as HCL, H 2 SO 4 and Ammonium. To overcome this, a study was conducted using the HIRARC ( Hazard Identification Risk Assessment And Risk Control ) and based on ( OHSAS ) Occupational Health and Safety Assessment Series 18001:2007 . The results of the HIRARC method show there are two extreme risk levels, two high levels, two low levels, and three medium levels. Controlling risks are in the form of eliminating and substituting points relevant to laboratory condition.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127499128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identifikasi Lapisan Akuifer Menggunakan Resistivity Method 1-dimensi di Dusun Karang Bayan, Parampuan, Kabupaten Lombok Barat","authors":"Melinda Dwi Erintina, Aji Syailendra Ubaidillah, Andi Faesal, A. Kurniawan","doi":"10.47313/jig.v25i2.1932","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1932","url":null,"abstract":". This study aims to identify aquifer layer at Karang Bayan Village, Parampuan, Lombok Barat District. Aquifer layer is the layer that can store and bring the water because it has high rock porosity. The method used in this study was resistivity method with Schlumberger Configuration. This study used 2 measurement points, namely point 1 and point 2. Each of points has the value of (AB/2) = 300meter . Data were analysed and processed by using software Progress resulting the variation of resistivity value vertically. The result at point 1 shows the aquifer layer is at depth 86.30-128 meters and identified as sandstone with resistivity value 56.50 Ωm . The result at point 2 shows the aquifer layer is at depth 86-128 meter and identified as sandstone with resistivity value 20.28 Ωm .","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133476126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluasi Kualitas Citra Mamografi Metode Automatic Exposure Control (AEC) Menggunakan Normalized Anisotropic Quality Index (NAQI)","authors":"R. Anggraini, Ni Larasati Kartika Sari, I. Kusuma, Febria Anita","doi":"10.47313/jig.v25i2.1651","DOIUrl":"https://doi.org/10.47313/jig.v25i2.1651","url":null,"abstract":". Mammography image is expected to have high image resolution quality so that the image is able to show microcalcifications as a sign of a malignant breast tumor with a size ranging from 0.1 mm . Automatic Exposure Control (AEC) is an image acquisition mode in mammography that is designed to strike a balance between patient dose and image quality by accommodating differences in breast size. This study aims to obtain the results of measuring mammographic image quality using Normalized Anisotropic Quality Index (NAQI), assessing the performance of AEC against variations in Compressed Breast Thicknes ( CBT), density and Average Glandular Dose (AGD). This study using 20 mammographic images in AEC mode, Cranio Caudal (CC) projections. The data in the forms of CBT, breast density and AGD were also taken. In this study, the CBT range was 45-81 mm, the density range was 14-18%, the AGD range was 1.25-2.26 mGy with the patient's age ranged from 39-67 years and the compression pressure ranged from 20.0169-157.9111 N. Then the images are grouped based on CBT, density and AGD, to get the NAQI values. The results of NAQI values are e ues sults o (0.111-2) . The highest NAQI value obtained on CBT images of 61 mm, density 14.64% and AGD 1.41 mGy .","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132986618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Perancangan Sistem Komunikasi Kabel Laut (SKKL) Fiber Optik Link Surabaya-Bawean","authors":"Endang Retno Nugroho, Rianto Nugroho","doi":"10.47313/jig.v25i1.1663","DOIUrl":"https://doi.org/10.47313/jig.v25i1.1663","url":null,"abstract":"Abstract. Internet network is an important requirement in the digital era. Indonesia is listed as the country with the highest data traffic growth in the world in 2016. To meet the needs of this data traffic, network access is needed. Indonesia has a geography that mostly covers the ocean. The islands lined up from Sabang to Merauke up to tens of thousands. This large number of islands is a problem in building communication infrastructure. Bawean Island is one of the islands in Indonesia with an area of 197 km2 with a population of more than 100,000 people in 2021. The pre-existing communication access is communication with VSAT using Satellite and Radio Wave Communication. Both types of communication have limitations in bandwidth capacity. In this research, it is proposed to design a Marine Cable Communication System (SKKL) for data access on Bawean Island. Data traffic is sent via optical fibre from the city of Surabaya to the island of Bawean which is 235 km away. In this design, we use a single-mode G.655 cable type and 5 optical amplifiers of the EDFA type. The results of the design show that the power link budget is -9.525 dBm, SNR 25.35 dB, Q-factor 9.26, and BER 1.009×10^-20. Abstrak. Jaringan internet merupakan suatu kebutuhan penting di era digital. Indonesia tercatat sebagai negara dengan pertumbuhan trafik data tertinggi di dunia pada 2016. Untuk pemenuhan kebutuhan trafik data ini dibutuhkan akses jaringan. Indonesia memiliki geografis yang sebagian besar meliputi lautan. Pulau-pulau berjajar dari Sabang sampai Merauke jumlahnya hingga puluhan ribu. Jumlah pulau yang banyak inilah yang menjadi permasalahan dalam membangun infrastruktur komunikasi. Pulau Bawean adalah salah satu pulau di Indonesia dengan luas 197 km2 dengan penduduk lebih dari 100.000 jiwa pada tahun 2021. Akses komunikasi yang sudah ada sebelumnya adalah komunikasi dengan VSAT yang memanfaatkan Satelit dan Komunikasi Gelombang Radio. Kedua jenis komunikasi ini memiliki keterbatasan dalam kapasitas bandwidth. Dalam penelitian ini diusulkan perancangan Sistem Komunikasi Kabel Laut (SKKL) untuk akses data pulau Bawean. Trafik data dikirimkan melalui serat optik dari kota Surabaya menuju pulau Bawean yang berjarak 235 km. Dalam perancangan ini menggunakan tipe kabel singlemode G.655 dan 5 buah optikal amplifier jenis EDFA. Hasil perancangan menunjukan besarnya power link budget -9.525 dBm, SNR 25.35 dB, Q-factor 9.26, dan BER 1,009×10^-20.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134584447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PERBANDINGAN BIOMASSA PERTANIAN SEBAGAI ENERGI TERBARUKAN BRIKET ARANG","authors":"R. Sondakh, Hayatudin Hayatudin","doi":"10.47313/jig.v25i1.1720","DOIUrl":"https://doi.org/10.47313/jig.v25i1.1720","url":null,"abstract":". Briquettes are renewable energy sourced from agricultural waste and used as a household fuel. The availability of farm or plantation waste is a good impetus for developing environmentally friendly briquette fuels. This study aims to determine the characteristics of briquettes from various types of agricultural biomass. The research was carried out at the Laboratory of the Faculty of Agriculture, Madako Tolitoli University, from May to June 2020. This study used a completely randomized design (CRD) with one factor: the type of briquettes consisting of 4 levels of treatment: coconut shell, coconut fiber, rice husk, and corn cobs. Each treatment was repeated three times so that there were 12 research units. The results showed that various types of biomass produced the characteristics of briquettes with better quality, which can be seen from the research parameters of moisture content, burning time, combustion speed, and density. Coconut shell biomass has more noticeable results to the moisture content obtained is 1.76%, burning time is 215.26 minutes, combustion speed is 0.005 gr/second, and density is 0.57 gr/cc.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115882437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PEMODELAN 2.5 DIMENSI (2.5D) UNTUK DEPOSIT PASIR MENGGUNAKAN DATA DC RESISTIVITY 2D PADA DAERAH KECAMATAN CARINGIN BOGOR","authors":"Tiara Aulianingtyas, Puji Hartoyo, Agus Kuswanto","doi":"10.47313/jig.v25i1.1561","DOIUrl":"https://doi.org/10.47313/jig.v25i1.1561","url":null,"abstract":"Abstract. DC Resistivity 2D has been carried out to find sandstones deposits in Caringin District, Bogor. Wenner array with a total of 1 outcrop and 5 measuring lines with 10m spacing between electrodes was used to measure the length of each 470m length lines. The 2D data obtained from the measurements are then interpolated into a 3D cross-section and it can be seen that the potential for excavated sand is 10 to 20m below the surface with a thickness of 30-40 meters. A total of 1.005,711 cubic meters of sandatones are found in the field based on Volume Isosurface processing in the Demo version of ROCKWORKS20 software. Abstrak. DC Resistivity 2D telah dilakukan untuk mencari deposit pasir hitam di Kecamatan caringin Bogor. Konfigurasi Wenner dengan tital 1 lintasan singkapan dan 5 lintasan pengukuran serta digunakan spasi antar elektroda 10 m untuk mengukur panjang lintasan masing-masing 470 m. Data 2D yang didapat dari pengukuran kemudian diinterpolasi ke dalam bentuk penampang 3D dan terlihat potensi pasir yang dapat digali berada 10 hingga 20 m di bawah permukaan dengan ketebalan 30- 40 meter. Total sejumlah kisaran 1.005.711,0 meter kubik pasir hitam terdapat di lapangan berdasarkan pengolahan Volume Isosurface di software ROCKWORKS20 versi Demo.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132203703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Parameter Cetak Pada Nilai Kekerasan Serta Akurasi Dimensi Material Thermoplastic Elastomer (TPE) Hasil 3D Printing","authors":"Juan Pratama, Adam Zuyyinal Adib","doi":"10.47313/jig.v25i1.1712","DOIUrl":"https://doi.org/10.47313/jig.v25i1.1712","url":null,"abstract":". The ability of Fused Deposition Modeling ( FDM ) 3D Printing technology to create complex objects makes this technology increasingly widely used. Apart from the advantages of FDM technology, the low dimensional accuracy and mechanical properties of FDM printed parts are one of the drawbacks of this process. In addition, developments in the use of elastic materials to create flexible products make the process of this technology requires special attention. This study focused on knowing the effect of process parameters, namely temperature and build orientation on dimensional accuracy and the value of hardness ( Shore D Hardness ) of the Thermoplastic Elastomer ( TPE ) material produced by FDM 3D Printing. The hardness test method refers to the ASTM D2240 standard for measuring Shore D hardness, while the dimensional accuracy is measured using a vernier caliper. The results showed that the temperature and build orientation had an influence on the accuracy and hardness values. The properties of TPE have different results from PLA which is completely shrunk. However, the porosity value does not have a significant effect on hardness, but the number of layers. The research results have been presented both in tables and graphically, and are briefly discussed in this study.","PeriodicalId":389584,"journal":{"name":"Jurnal Ilmiah Giga","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124262997","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}