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Riau
INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
Engineering
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Articles 3,145 Documents
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Mitigasi Bencana Kebakaran Lahan Gambut Di Provinsi Riau Menggunakan Teknologi Modifikasi Cuaca (Studi Kasus: Kabupaten Indragiri Hilir, Kabupaten Kepulauan Meranti, Kabupaten Pelalawan Dan Kabupaten Siak) Ilvi Rahmi Amalia; Sigit Sutikno; Ari Sandhyavitri
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 Land in Riau Province have become a routine disaster in recent years. Peat Land occur of because the condition of the peatlands is very deep and triggered by irresponsible parties who tend to clear land by burning. Currently Weather Modification Technology (TMC) is one of the technical solutions that can be used to overcome land fire disasters, by planting NaCl salt in clouds that have the potential to rain. the cloud that is the target of the seeding is the Cumullus (Cu) type cloud. In this study four areas were taken in Riau Province, namely Indragiri Hilir Regency, Meranti Islands, Pelalawan Regency and Siak Regency. With the data used is rainfall data from TRMM satellites and hotspot distribution data from www.fire.globalforestwatch.com. The data obtained were analyzed using FileZilla, GrADS and Command Promt software. From the data analysis, the results of TMC evaluation in general with the mission of increasing rainfall in the four target seeding areas in 2014 and 2016 succeeded in increasing rainfall thus reducing the number of hotspots. So this method can be used to overcome the disaster of land fires in Riau Province.Keywords: TMC, TRMM, Hotspot
Penilaian Kinerja Sarana Dan Prasarana Daerah Irigasi Rawa Reteh 1 (Rumbai Jaya) Kabupaten Indragiri Hilir (Studi Kasus : Blok B Dan Blok J) S, Arif Hidayat; Fauzi, Manyuk; Trimaijon, Trimaijon
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

The function and condition of an irrigation network performance system will decrease. This due to the operation of the system for a long period of time. According to PUPR Regulation Number: 14 / PRT / M2015 in Riau Province there is a Swamp Irrigation Area (DIR) Reteh 1 Rumbai Jaya with an area of 3006 ha. The study of DIR's performance has never been done. Assessment of the performance index of DIR Reteh 1 Rumbai Jaya is based on SE Minister of Public Works Number: 02 / SE / M / 2011. In the SE, the assessment includes channels, water structures and protective dikes. Assessment on DIR Reteh Rumbai Jaya obtained the results of the network condition index of 2.16, network functions 44.25% and recommendations for action are rehabilitation; the condition of the protective embankment is good and the recommended action is maintenance. Based on the network function and condition of the protective embankment, the performance of the swamp reclamation network in DIR Reteh 1 Rumbai Jaya is obtained.Keywords : performance index, swamp irrigation, action recommendation
Simulasi Protokol Routing DSDV Pada Jaringan Vehicular Ad-Hoc Network Di Pekanbaru Zulkifli Zulkifli; Linna Oktaviana Sari
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

Traffic accidents often happen in big cities like Pekanbaru city. The accidents are usually caused by some factors such as the sum of the vehicle and the vehicle's speed that exceeds the threshold set. Therefore, technologies that can reduce the occurrence of accidents are needed. One of the technologies is Vehicular Ad hoc Network (VANET). VANET makes all vehicles in a network as nodes to communicate. Routing protocols are required in VANET to deliver packet data efficiently and optimally. In this study, Destination – Sequenced Distanced – Vector (DSDV) was used as routing protocols. DSDV for Pekanbaru city was simulated using SUMO and NS-2 software. This simulation uses urban condition in scenario changes the number of nodes. Network performance parameters was evaluated using Packet Delivery Ratio. The results show a network of VANET designed can work well with Packet Delivery Ratio averaged, 95.59%.Keywords : VANET, DSDV, SUMO, NS-2
Pengaruh Penambahan Serat Tebu Terhadap Sifat Fisik Pada Campuran Beton Normal Ahmad Obi Narman; Zulfikar Djauhari; Reni Suryanita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

This research aims to study the physical properties of concrete with the use of bagasse. The research consisted of 3 tests, they were porosity, shrinkage, compressive strength. The bagasse used were 0.3%, 0.5% and 0.7% of total weight of coarse aggregate. The specimen was tested at 7, 14, and 28 days. The test result showed that the porosity of specimens containing bagasse were higher than that of the control specimen, BN. The porosity of specimen BST 0.7% was 19.3% higher comparing to that of BN. Furthermore, the compressive test showed that the compressive sthrength specimen BN was 25.653 MPa, it was higher than that of specimens containing bagasse fiber. The concrete shrinkage test showed that the predicted shrinkage according to ACI 209 was higher than that of gained from the direct measurement. The shrinkage value for the ACI 209 method was 218 μm. Based on the results of direct measurement, the highest shrinkage value obtained on specimen containing 0.7% fiber concrete was 88 μm. .Keywords : Bagasse, Porosity, Shrinkage, Compressive Strength
Pengaruh Kecepatan Pengadukan Dan Waktu Proses Deasetilasi Kitin Dari Cangkang Kepiting (Portunus Pelagicus) Terhadap Karakteristik Kitosan Ardiansyah, M. Frendy; Drastinawati, Drastinawati; Yusnimar, Yusnimar
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

Chitosan syntesized from chitin that isolated from crab shell wastes (Portunus pelagicus). Chitosan synthesized from Chitin that isolated from crab shell wastes (Portunus pelagicus) by deacetylation process. The purpose of this research tostudy the effect of the time reaction of the stirring speed in the deacetylation process. Crab Shell in the puree with a size 100 mesh. Chitin in the crab shell powder are in isolation by process deproteination and demineralization. Chitinwhich has been syntesized and then transformed into chitosan by deacetylation process with NaOH 60%, the mass ratio chitin and NaOH 60% volume 1 : 20 (w/v), at 120˚C, stirring speed 50 rpm, 100 rpm, 200 rpm, and time reaction 60 minutes,120 minutes, 180 minutes. The results showed that the degree of deacetylation and moisture content are increased during reaction time and speed stirring increasing. The Value of yield, moisture content, and degree of deacetylation respectively ranged from 53,6%-83%, 18%-70%, 36%-70%. Chitosan with the highest value of degree of deacetylation is obtained in the reaction time of 180 minutes and stirring speed of 200 rpm with the value of degree of deacetylation is 83%, the value of yield is 69%, the moisture content is 70%, and the ash content is 10,9%.Keywords: Chitin, Chitosan, Deacetylation Process, Degree of Deacetylation, Crab Shell, Characterization.
Deteksi Kelonggaran Baut Dengan Menggunakan Sinyal Suara Fajar Dwi Junianto; Feblil Huda
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

Bolt is one of machine elements which used in joining process. Failure that often occurs in the bolt joint is usually caused by dynamic load. In this research, bolt loosening detection method by using sound signal was investigated, for that purpose by analyze the dynamic characteristics of bolt connection which are the natural frequency and damping ratio. The research method was used Structural Health Monitoring (SHM) is a process of identifying damage by Nondestructive Evaluation (NDE). The advantage this method it is not costly to set-up testing. Excitation was given to the steel plate by the speaker and the sound response of the bolt loosening was recorded through the microphone. Sound signals are given for normal bolt conditions, looseness of 1 bolt with different torque fastening variations. Sound signal data was processed using the Fast Fourier Transform (FFT) to obtain natural frequency and damping ratio. The result of this research was the value of natural frequency and damping ratio increases with the addition of bolt tightening torque.Keywords: bolt looseness, structural health monitoring (SHM), fast fourier transform (FFT)
Analisis Penyebab Terjadinya Pembengkakan Biaya (Studi Kasus: Pada Proyek-Proyek Di Kota Pekanbaru) Wan Bunda Theresia; Rian Tri Komara Iriana; Yohanna Lilis Handayani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

The construction project is an activity which has a goal to be achieved. In the construction process, the cost is the major consideration because it commonly involves a large amount of investment and is vulnerable to the risk of failure. The purpose of this research was to determine the rate of validation, and to analyze the most dominant factor causing the overrun of construction costs (case study on Municipal Projects in Pekanbaru). The collected data were analyzed by using validation and reliability test, factor analysis, classic assumption test, and multiple linier regression. The data processing was done by using SPSS software (Statistical Product and Service Solution) version 23. As a result, it is obtained that the most dominant factor which has triggered the overrun cost consisted of: planning and construction department i.e. handling too many projects at the same time with the percentage of 83,9%, part of the cost estimate that does not take into account the unexpected cost with a 92.0% percentage on the road, part of the cost estimate that does not take into account the unexpected cost with a percentage of 90.1% on the bridge.Keywords : construction, cost, overrun cost, dominant factor.
Karakteristik Nilai Kuat Tekan Bebas Tanahan Lempung Terhadap Perubahan Kadar Air Dan Tebal Lapisan Pemadat Fikri Hidayat; Soewignjo Agus Nugroho; Ferry Fatnanta
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

Cohesive soil is a type of soil which is requiring a special handling. Clay as a soft soil has bad characteristic, so it needs to be improved in term of stability and bearing capacity. In Indonesia, there are many buildings and civil construction which have been damaged because they were built on expansive clays. For example, in the field we often find bumpy road pavement. This is happened due to poor bearing capacity of the subgrade which contains expansive clays. The aim of this research is to obtain significant factors that influence the UCS value and shape of the crack due to variations in density, moisture content and thickness of the compacted layer. Density variation used was amount of compaction energy. Variations in moisture content were 2% under OMC (OMC-), optimum moisture content (OMC) and 3% above OMC (OMC +). The thickness of the layers was controlled by the weight of the soil of each compaction layer. Moisture content variation results showed that the soil with the moisture content of OMC has largest UCS value. Test results from soil weight per layer showed that the lessest weight of soil, the highest of UCS value. This is because of the weight composition of each layer is evenly distributed. The most extreme collapse occurs in the second layer of each layer weight variation with the center of collapse in the middle layer.Keywords: Moisture content, UCS, soft clay, expansive soil
Simulasi Dan Analisis Performansi Vehicular Ad Hoc Network (VANET) Menggunakan Protokol Routing Berbasis Topologi Di Kota Pekanbaru Mutia Indah Lestari; Linna Oktaviana Sari
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

VANET is a subset concept of Mobile Ad-Hoc Network (MANET) where the vehicle acts as a node on the network. The basic purpose of VANET is to support communication between vehicles so that it can be used as an intelligent traffic information traffic system. This communication can be done directly between vehicles (Vehicle to Vehicle) or with the infrastructure to communicate. High node mobility is a basic VANET characteristic that causes rapid changes in network topology. This necessarily requires the implementation of a routing protocol that matches its characteristics within the network. In this study to support the performance of VANET communication is used topology-based routing Ad hoc On-Demand Distance Vector (AODV). AODV is one of the reactive routing protocols in VANET. The AODV protocol will be simulated using Network Simulator-2 (NS-2) by multiplying the number of nodes scenario that runs on the real map. This scenario will be analyzed and reviewed from the parameters of Packet Delivery Ratio, End to End Delay and Routing Overhead. The simulation results obtained on each parameter are 99.20%; 0.0138 seconds; 19076 packet.Keywords: AODV, VANET, SUMO, NS-2, 802.11p
Perancangan Alat Pengukur Massa Pada Automatic Machine Measuring Of Mass And Dimension Dengan Metode Dfma Aulia Rahman; Dodi Sofyan Arief
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Design of automatic machine measuring of mass and dimension is the initial activity of a series of product manufacturing processes. Design is an important part of producing a complete manufacturing product. The manufacturing process of this machine refers to the Design for Manufacture and Assembly (DFMA) method. DFMA method is a method that provides efficient steps in the manufacturing process. Design for Manufacture (DFM) is one of the manufacturing planning systems that will analyze designs that will be used from several planned design alternatives, until the third design alternative is chosen as the final design for manufacturing. Design for Assembly (DFA) is one of the assembly planning systems that will analyze the design of components and products as a whole. The DFA analysis will produce assembly efficiency values. The value of assembly efficiency from the prototype design in theory is 5.45% with assembly time of 715.05 seconds and the value of assembly efficiency from the prototype in practice is 5.76% with assembly time of 676.54 seconds. Keyword : design, automatic measuring machine, DFM

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