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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
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Analisis Alternatif Penyelesaian Kinerja Persimpangan (Studi Kasus: Persimpangan Jalan HR. Soebrantas-Jalan Kubang Raya-Jalan Garuda Sakti) M Galang Rosyandi; Sri Djuniati; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The non-functioned traffic lights at intersection point of Jl. HR. Soebrantas-Jl. Kubang Raya-Jl. Garuda Sakti, Pekanbaru, is the main factor that lead to an increase in degree of saturation to 0,962. The value of degree of saturation is greater than the requirement of Indonesian Highway Capacity Manual (IHCM, 1997) which is 0,85. The IHCM method was used to overcome the congestion problem at this intersection point by specifying 4 alternatives solution. There was an increase in DS value by 8,64% for initial condition in alternative 1, a decrease in DS value by 4,78% from alternative 2, a drecrease in DS value by 2,09% for alternative 3 and a decrease by 20,26% in alternative 4. Hence, from the result shown, it is believed that alternative 4 is the best alternative to overcome the congestion problem at this particular intersection point.Keywords: intersection of Jl. HR. Soebrantas-Jl. Kubang Raya-Jl. Garuda Sakti, DS (Degree of saturation), traffic flow.
Model Fisik Canal Blocking Bentuk Tabung Ricca, Randi Rangkuti Putra; Rinaldi, Rinaldi; Fauzi, Manyuk
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Canal blocking is closure or insulation of trenches, rivers, or canals permanent or non-permanent that serve to keep the water system and elevation water level stable. With the canal blocking it will affect the flow profile in the channel. The purpose of this research is to investigate the effect of debit coefficient on canal blocking and the influence of bolt and shear force on the stability of canal blocking so as to produce optimal design. The study was conducted in the laboratory by testing the physical model of the blocking canal door. Canal blocking model is made in such a way resembles canal blocking in the field with a scale of 1: 7. Test method is done by variation of the discharge, permeable or unpermeable flow properties, tube arrangement, material weight, and canal blocking of one unit or not a single unit. The results showed that blocking canals have good stability, high efficiency, and economical influenced by several factors, there are type of material, the arrangement and the weight of the material content, the strength of the coefficient of friction (locking / recognition of canal blocking), and the design of permeable or unpermeable.Keywords: canal blocking model, permeable, unpermeable
Penentuan Daya Jerap Karbon Aktif Dari Polong Akasia Terhadap Ion Cr(VI) Run Bunga Dewi; Yusnimar Yusnimar; Rozzana Sri Irianty
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Activated carbon which has a high adsorption capacity for the adsorbate. Activated carbon can be produced from materials containing carbon or charcoal was treated in a certain wayto gain more surface area. The research goal was to process acacia pod into a activated carbon and determine the adsorption power of the ion Cr (VI). The dried acacia pod was carbonated in a sealed drum to produced charcoal / carbon. Charcoal was crushed into aparticle size of 100 mesh. Charcoals with a size of 100 mesh were activated physically and chemically. The activation process of carbon physically carried out at a temperature of 200,300 and 400 ºC. While chemically, activated carbon was done by used Na2CO3 as an activator. Carbon/charcoal was soaked in a solution of Na2CO3 for 24 hours. Furthermore, itwas separated from the solution of Na2CO3 and dried at a temperature of 105 ºC. Activated carbon obtained both physically and chemically characterized to determine such as ashcontent, moisture content and adsorption power of the metilen blue solution and Cr(VI) in solution. The results showed that the carbon which activation under a temperature of 400 ºCwas the best activated carbon has a water content of 1.5%, ash content of 2.3%, adsorption power of the metilen blue 99,81% and the adsorption power of the ion Cr(VI) 87,72%.Keywords: Adsorption, Physics Activation, Chemical Activation, Activated Carbon and acacia pod
Pengaruh Massa Dan Ukuran Partikel Adsorben Kulit Singkong Terhadap Efisiensi Penyisihan Fe Pada Air Gambut Afmarenti, Winda; Daud, Syarfi; Andesgur, Ivnaini
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water is surface water are blackish brown and metals Fe which requires effective and efficient processing to be worthy for use by the public. Various types of adsorbents continue to be developed, one of which is the cassava skin adsorbent. Thepurpose of this study was to determine metal removal efficiency of Fe in the peat water, calculating the adsorption capacity and determine the appropriate type of isotherm. Fixed variables used in this study is the stirring speed of 100 rpm and acontact time of 60 minutes. For independent variables used consisted of adsorbent mass variation of 0.5; 1; 1.5; 2 g and a particle size variation -50+100; -100+170 and -170 mesh. Removal efficiency of Fe metals concentrations higher 75,46% by mass of adsorbent 2 g with a particle size of -170 mesh. Metal adsorption capacity of Fe achieved the highest on the mass of 0.5 grams with a particle size of -170 mesh amounted to 0,2928 mg Fe/g. Types of adsorption isotherms corresponding to Fe by cassava skin adsorbents is Freundlich isotherm with R2 values of 0.9508.Keywords: Adsorbent, Adsorption, Cassava Skin, Fe, Peat Water.
Sistem Pengenalan Pola Karakter Huruf Korea Menggunakan Metode Principal Component Analysis Dan Jaringan Syaraf Tiruan - Back Propagation Delsavonita, Delsavonita; Candra, Feri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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This paper describes about a recognition sistem for Korean characters into Latin form by using Principle Component Analysis Method and Artificial Intelligence - Back Propagation Approach. This sistem uses image of Korean characters as input data with 65x65 pixel of original image size and is processed by image preprocessing in the form of pixel size conversion into 15x15 pixel binary image. Every image is then extracted to produce an image feature. The features are processed first using Principle Component Analysis to reduce image feature before they enter classification stage by using Artificial Intelligence - Back Propagation Approach. This study uses 10 sample data of Korean vowel letters, obtained from 25 different font types and each font consists of normal and bold sample. Total data reaches 500 samples divided into 70 training data and 30 testing data. Architecture of this artificial intelligence uses 3 hidden layers . Each hidden layer consists of 20, 20 and 5 neurons, one output neuron. The result of this sistem research is obtained an accuracy of 95%.Keyword : Korean Letters a.k.a Hangul, Principle Components Analysis, Artificial Intelligence - Back Propagation
Pemodelan Fotovoltaik Berbasis Teknik Adaptive Neuro Fuzzy Inference System Tribowo, Ihwallibi; Zakri, Azriyenni Azhari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Photovoltaic system is designed to meet the need of electricity or as an alternative energy. Using of photovoltaic panel system to generate electrical power has uncertainty of output power value, since it is not constant and strongly influenced by weather condition. This research discusses photovoltaic model to predict efficient and accurate output. This modelling system will applies method of Adaptive Neuro Fuzzy Inference System (ANFIS) to generate power, voltage, current, and temperature prediction. This model is divided into two systems run by ANFIS, ANFIS system 1 and system 2. From simulation result, obtained error value of open circuit voltage from battery 0.000104 %. This value is output value of ANFIS system 1. Furthermore, simulation of ANFIS system 2 produces error value of AC voltage around 0,058482%, This value is the output of inverter.Keyword : ANFIS, battery, modeling, prediction, photovoltaic
Evaluasi Konfigurasi Bandar Udara Berdasarkan Standar RIB (Km No.44) Dengan Perhitungan Berdasarkan Annex 14, 2013 Serta ICAO AC No.150 E (Studi Kasus: Minangkabau International Airport) Girang Rahmanul Hakim; Ari Sandhiyavitri; Sri Djuniati
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Minangkabau International Airport has an annual growth rate of passengers and the aircraft operated there based on data from 2010 until 2016. The current runway has length 2750 m and largest type of aircraft is B 747 - 300. Minangkabau international airport has three taxiways 448 m x 30 m, 334 m x 30 m, and 305 m x 30 m and apron has dimensions 315 m x 120 m. The increase in air traffic has resulted in an evaluation of the airport configuration in present or future circumstances. Existing of the runway is an inadequate type of aircraft B 747 - 300 for international destination aircraft. As for the planning year, 2020 with the additional length of the enlarged base to 3000 m safely to use. Existing of taxiway is able to serve the plane. The apron for the existing state need to upgraded and the planning of 2020 should also be upgraded. At the peak hour of the plane for 2016 as many as 12 aircraft while the projection stage for 2035 obtained a peak hour of 28 this indicates Minangkabau International Airport will be developed later. Pavement for runways needs to be upgraded to the current state of affairs.Keywords: Airport Configuration, Evaluation, Projection
Pengolahan Air Gambut Untuk Menurunkan Kadar Besi Dan Mangan Dengan Proses Elektrokoagulasi Secara Kontiniu Adam Fadillah; Idral Amri; Syaiful Bahri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Peat water from surface water or groundwater has high organic content and there is a metal content inside such as ferrous metals and Mn. Therefore it is necessary to do the processing by using electrocoagulation. The purpose of this study is to discuss the performance test of the electrocoagulation process continuously on the decrease of Fe and Mn levels and determine the optimum condition. The electrocoagulation process uses electric power that flows in the direction of the electrode. Electrocoagulation reactors paired with cables that connected the power supply to an electric current with varying voltages (18, 20, 22, and 24 volts) and variations in flow rate (4 and 6 lpm) are employed. The results of this study obtained the optimum conditions obtained at 24 volt voltage and 4 lpm flow rate with decrease of Fe by 89% from 2,909 mg/L to 0,322 mg/L and Mn equal to 92% from 0,232 m /L to 0,019 mg/L. Keywords: peat water, electrocoagulation, flow rate, continuous, voltage
Analisis Perbandingan Penilaian Kerusakan Jalan Metode Bina Marga Dan Metode Pavement Condition Index (PCI) (Studi Kasus : Jalan Ratu Sima Kota Dumai) Febri Rahman; M Yusa; Elianora Elianora
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Road is a land transportation infrastructure that is very important because if the road a good area, facilitate the economic activities of the community, facilitate the mobility of the population, increase productivity in work and increase other social activities. Damage to the road will disturb the comfort in driving, such as Ratu Sima street which has many flexible pavement. Ratu Sima Street is one of the roads in Dumai City. The purpose of this study is to assess and classify the types and extent of pavement damage, and to determine the value of pavement conditions by finding the value of Pavement Condition Index (PCI) and Bina Marga. The assessment of pavement condition is needed to establish the appropriate maintenance program. The methods that usually used to evaluate pavement condition are the method of Bina Marga and PCI (Pavement Condition Index) method. This study aims to assess the pavement condition of Ratu Sima street with these two methods being compared. This study used field research in which the primary data was the result of pavement condition survey. The priority of pavement maintenance of Bina Marga method rated from 0 to more than 7, while the PCI rated from 0 to 100. Result of evaluation of condition of Ratu Sima street with Bina Marga method and the PCI method turns out to result in different assessments, the Bina Marga method obtains periodic maintenance results and the PCI method gets failed results. Key words: pavement condition index, Bina Marga, PCI.
Evaluasi Risiko Keterlambatan Pada Proyek Konstruksi Pembangkit Listrik Tenaga Uap (PLTU) Tembilahan Riya Nisa Putri; Ari Sandhyavitri; Alfian Malik
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The implementation of construction projects often mismatch between the planning schedule and the realization at site like Coal Fired Steam Power Plant Project (PLTU) in Tembilahan which is 186 days delay (209 days plan but realization in 395 days). This resulted in the overdue of the Tembilahan power plant to operate, but by the implementation of Risk Analysis, Risk Mitigation and Control obtained the following results: for 80% probability there was a decrease in the implementation time delay to 32 days. Implementation of risk management can control project risk systematically.Keywords: Risk Analysis,Delay, Project, Probability

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