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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Implementasi Jaringan 4G Pada Layanan Video Conference Sofinanda Sari; Noveri Lysbetti Marpaung
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Video conferencing is a long-distance interactive communication service that can bring together two or more people using broadband internet services. This service can send and receive data in the form of audio and video simultaneously or two-way transmission techniques. Data in the form of audio and video, which have a large enough bandwidth, require a network capable of meeting bandwidth requirements. Observations were made for 12 days in the Pekanbaru area, Panam. The results of this study have concluded that the superior throughput is Telkomsel with a data size of 1003429.76 ms. This is evidenced by the quality offered and the clarity of the image during the video conference. Keywords: H.264 Codec, LTE, Multipoint, QOS, Video Conference.
Rancang Bangun Buck-Boost Converter Berbasis Arduino Pada Pembangkit Listrik Tenaga Surya 8x10 Wp Jeffry Julianto; Antonius Rajagukguk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The use of solar panels through the photovoltaic (PV) process is an efficient way to produce electrical energy. The main barriers to the use of solar panels are their low energy conversion efficiency and high initial costs. Solar panels are unregulated DC power sources that produce fluctuating voltages and currents, so they must be controlled properly in order to work as expected. Usually when solar panels are directly connected to a load, the operating point is rarely at its maximum power point (MPP). Maximum Power Point Tracking (MPPT) is used to generate maximum power from solar panels. The DC to DC conversion functions as an intermediary for the solar panels and the load to transmit the maximum power to the load. In this study, MPPT was used with the Perturb & Observe (P&O) algorithm and DC to DC converter with a buck-boost converter type. Based on the test results between simulation and tool implementation, the input voltage of 17.6 V produces an output voltage of approximately 14.4 V for charging a 12 V battery with the maximum power produced by the PV generator. Based on these tests, it can be concluded that the buck-boost converter design based on the Arduino Uno in the 8x10 Wp photovoltaic power plant can work well. Keywords : PV Power Plant, MPPT Perturbation & Observation, Buck-boost Converter, Arduino
Desain Inverter 1 Fasa Pada Pembangkit PV 9 X 10 WP Menggunakan Metode SPWM Dengan Sistem Kontrol Arduino Jhon Lodewyik Situmeang; Antonius Rajagukguk; Eddy Evrianto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

There were several alternatives that can be used to generate electrical energy, one of the ways is by using solar cells, to fulfill the needs of electrical energy. This solar cells utilization very fit with indonesia climate because indonesia has tropical climate, where the sun shines all year round. Not only that, this energy is renewable, clean and environmentally friendly. In other words this energy inexhaustible and safe as long as the sun can shine. The generator that can be used to produce electrical energy called PV, as it is known, PV itself is a generator that produces DC electricity. In this situation, an inverter is needed to be able to convert DC to AC, because all properties used at home require AC power. In this research the researcher use a PV generator source with 90 Watt-Peak power, therefore the inverter is made to adjust the capacity of the PV generator, where the switching process uses the IRF44n type mosfet, with the mosfet driver using IC type IR2110, where the switching process is itself controlled by Arduino with the SPWM method. so that the output of the inverter is an AC voltage with a frequency of 50HzKeywords : PV, Arduino, Switching, Inverter
Zeolit Sebagai Adsorben Pengolahan Air Gambut Arhamny Arhamny; Lita Darmayanti; Aryo Sasmita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Palm Oil Fly Ash (POFA) is one of the solid wastes produced in the burning of shells and palm fibers in the boiler furnace at a palm oil mill. POFA has a high silica content so that it can be used as a basis for making zeolites. Zeolite can be used as an adsorbent in water treatment, one of which is as an adsorbent in peat water treatment. The adsorption process uses absorbents to absorb metals and other impurities. Keywords: POFA, Zeolite, Adsorbent, Peat water
Analisis Fixed Carbon Biochar Dengan Bahan Baku Sekam Padi Harsena Hayas Fika; Shinta Elystia; Aryo Sasmita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Biochar is a soil amendment agent that has long been known in agriculture which is useful for increasing soil productivity. The raw materials for making biochar come from agricultural, plantation, livestock and forestry residues. Rice husks contain 75-90% organic matter (cellulose and lignin), silica minerals and other micro elements so they are good for use as soil amendments. Biochar is made by pyrolysis at 500 0C for 1 hour and flows 0.1 L / minute of N2 gas. Biochar from rice husks in this study has met the minimum fixed carbon requirements based on SNI 06-3730-1995, namely 68.4%. Key words : Biochar, rice husk, fixed carbon
Berastagi Flower Center Dengan Pendekatan Arsitektur Neo-Vernakular Agryvania Br Sembiring; Pedia Aldy; Gun Faisal
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Berastagi, Karo Regency is one of the tourist areas in North Sumatra Province as the largest producer of fruit and flowers in North Sumatra. Some flowers that grow in Berastagi such as Chrysanthemum, Sedap Malam, Mawar, Gerberra make a dominant contribution to the total flower production in North Sumatra. Berastagi needs a place that becomes the center for accommodating commercial, educational and recreational activities for the community that can fulfill the needs of flowers, flower cultivation, and flower arrangement services. The method used in this design uses Neo-Vernacular Architecture approach by applying the principles and architectural elements that exist in the Batak Karo traditional house by adding modern elements in, expected to produce a form of appearance of the building in a new form but still maintain the existence of local culture. The concept used is the transformation of the concept Harmony in Diversity, which is expected to display different types of flowers that are tidy and harmonious for commercial, recreational and educational functions that are adapted to the karo traditional buildings that have different functions in one village with family among the communities interwoven harmoniously .Keyword: Neo-Vernacular Architecture, Berastagi, Batak Karo, Flower
Pembuatan Beton Berbasis OPC Dengan Penambahan Turbulence Assisted Shear Exfoliation (TASE) Graphene Febri Riandi; Amun Amri; Evelyn Evelyn
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Concrete is the primary raw material for construction which consists of constituent materials in the form of portland cement, fine aggregate, coarse aggregate, water and with or without added materials. Graphene is a nano-sized and strong material. The use of graphene can be used as an additive (admixture or additive) to improve the quality and quality of concrete. This research aims to make concrete based on Ordinary Portland Cement (OPC) with the addition of graphene nanosheets (GNS), as well as to study the effect of increasing the number of graphene nanosheets (GNS) and differences in sand size on the mechanical properties and morphology of the resulting concrete. Concrete manufacture begins with preparing a graphene solution which is made by synthesizing pure graphite through the TASE method. Then the concrete is made by mixing all the materials to be used manually with the ratio of raw materials (cement: sand: gravel: water) is 1: 2: 3: 0.6 until homogeneous. The results of testing the mechanical properties of concrete show that the highest compressive strength is 21.75 MPa obtained from variations in the addition of 5% graphene with sand size gradations, namely mix (200 <x <100 with 100 <x12), the lowest porosity and water absorption is 9% and 3.94% was obtained from the variation of 5% graphene addition with sand size gradations, namely mix (200 <x <100 with 100 <x12), while the SEM analysis results showed that the higher the addition of graphene to the concrete matrix can reduce the porosity value of the concrete so that can improve the mechanical properties of concrete. Keywords: concrete, geopolymer, graphene, OPC, TASE
Prarancangan Pabrik Akrilonitril Menggunakan Proses Sohio Dengan Disain Alat Utama Kolom Distilasi (D-101) Daratul Laila; Said Zul Amraini
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Acrylonitrile is a liquid, colorless and soluble in a variety of organic solvents, such as ethanol, ether, acetone, isopropanol, ethyl acetate, carbon tetrachloride and benzene, only partially soluble in water, which is usually used as a precursor in the manufacture of acrylamide and acrylic acid. Dimeseration of acrylonitrile can produce adiponitrile, which is used in the synthesis of polyamides. In small quantities it is used as a fumigant. Acrylonitrile is produced using propylene as raw material and reacted with ammonia and air in a fluidized bed reactor in the presence of a heterogeneous bismuth molybdate catalyst. The by-products produced are HCN, acetonitrile (ACN) and water. The unreacted ammonia is removed with acidified water with sulfuric acid as dilute ammonia sulfate, which can be recovered by crystallization. Propylene, ammonia and oxygen are fed into the reactor, the catalyst used is bismuth molybdate, after mixing it is then fed to the absorption unit, the absorbent material used in this unit is sulfuric acid which is useful for neutralizing excess unreacted ammonia, then fed back to the second absorption. with an absorbent in the form of water. After that proceed to the distillation unit to obtain pure acrylonitrile. The main design is a distillation tower which serves to separate the acrylonitrile from the mixture. The need for acrylonitrile in Indonesia is still imported. With the presence of an acrylonitrile factory in Indonesia, it is expected to reduce the need for imports. If domestic needs have been met, these acrylonitrile products can be exported, thereby increasing industrial development in Indonesia. In addition, the establishment of this factory can create jobs and can trigger new factories that require acrylonitrile products. The type of distillation column used is a tray column. The operating conditions of the distillation column are 103.15 °C at the top and 215.39 °C at the bottom with a pressure of 2 bar each. Factory economic analysis is carried out to determine the feasibility of the factory to be built. Based on the results of the economic feasibility analysis of the factory, the acrylonitrile plant is feasible to build with an IRR of 22.67%, ROI of 59.54% and BEP of 35%. Keywords: acetone, carbon tetrachloride, ethanol, ether, isopropanol.
Analisis Keberadaan Sistem I-GSW Untuk Perlindungan Menara Transmisi 150 KV Terhadap Sambaran Petir Langsung Novri Andrean; Edy Ervianto
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The ground wire serves as a protective phase wire from lightning strikes, problems arise when lightning strikes the ground wire. There for the lightning current flows in the ground wire, thus a voltage increase occurs in the tower. The technology that has been developed by ITB and PT. PLN Persero is the I-GSW system functions to protect the transmission tower from lightning currents flowing into the construction of the tower due to lightning strikes directly on the ground wire. In this research the ATP-EMTP software was used as an observation and analysis tool for voltage rises in the tower during a lightning strike immediately before and after the installation of the I-GSW system. The higher the earth grounding resistance value and the higher the lightning current striking so that the I-GSW system the stronger to protect the transmission tower from the increase in voltage The greater the injection of lightning strikes the tower voltage will be greater so that the I-GSW system will protect the tower with a large so that the tower voltage increase using the I-GSW system will not be large because it has been protected by the I-GSW system. The closer the distance of the flash point location on the tower, the higher the tower voltage increase and vice versa the farther the location of the flash point on the tower, the smaller the voltage increase on the tower.Keywords: ATP-EMTP, I-GSW System, Ground Wire, Lightning Current, Ground Type Resistivity
Perhitungan Jumlah Kendaraan Bermotor Di Jalan Pattimura Dan WR.Supratman Kota Pekanbaru Nadya Dwi Permatasari Vionola; Aryo Sasmita; Lita Darmayanti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Increased motor vehicle activity produces exhaust emissions that cause air pollution,reducing air quality. This research is located at Pattimura and WR.Supratman street as one of collector and local street in Pekanbaru. The purpose of this research is to figure out the amount of vehicle at Pattimura and WR. Supratman street Pekanbaru with recording traffic activities method. The biggest traffic congestion is on Pattimura street which was on monday morning which is had 3944 units. Keywords : Carbon Monoxide Emissions, Vehicle Amount, Speed Of Vehicle

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