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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Articles 3,145 Documents
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Analisis Jaringan Distribusi Utama Di Kandis Pasar Minggu Menggunakan Epanet (Studi Kasus: Desa Sam-sam) Panggabean, Hendrix SB; Siswanto, Siswanto; Trimaijon, Trimaijon
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

Water is a very important need for human survival. In solving the piping problem in a region, a pipe network system model for the distribution of raw water which includes hydraulic equations for closed channels is required. In the study using EPANET program. Projection result from population of 2016-2035, Geometrik method become reference in determining clean water requirement, by using water requirement per person per 100 liter per second. Distribution of clean water needs using HDPE pipes. The pipe used has the smallest diameter of 90 mm and the diameter of 180mm diameter 1 and 200 to 110 mm in diameter 2 has a length of 31,007.64 meters, with junction or pipe connection 234, 1 IPA tank and 1 pump with liters per second.Keywords: EPANET, Water Pipe, Geometric Method.
Kapasitas Adsorpsi Anabaena cycadae Untuk Penyisihan Logam Crom (Cr) Dari Limbah Cair Industri Elektroplating Juarsa, Tri; Elystia, Shinta; Muria, Sri Rezeki
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

Utilization of algae biomass can be an alternative solution to environmental pollution problems due to heavy metals, because it has an active site and pores on the surface so it can be used in biosorption process. This study was conducted todetermine whether the biosorbent of Anabaena cycadae algae in reducing Cr level of electroplating industry waste water. Biosorbent dose variation are 500 mg /l, 700 mg / l, 900 mg / l and 1100 mg / l, 105μm, 149 μm and 177 μm biosorbent particle size and contact time variations of 30, 45, 60, and 75 minutes wereperformed to determine the effect to the biosorption process. The optimum state was obtained at an algal dose is 900 mg / l, a particle size is 105 μm with a contact time is 60 min. The adsorption capacity of algae in absorbing Cr metal is 2,379 mg / g.Keywords: biosorption, algae biomass, biosorbent mass, pH, contact time, Cr, electroplating wastewater
Komparasi Model Hidrolologi Runtun Waktu Untuk Analisis Hujan - Debit Menggunakan GR4J Dan Transformasi Wavelet - GR4J (Studi Kasus : DAS Indragiri Bagian Hulu) Riady, Rony Rahmad; Fauzi, Manyuk; Suprayogi, Imam
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

GR4J model is one of the well known rainfall-debit model analysis and have been successful in investigating the hydrology response of the various watersheds, espencially in indonesia. In this research is used as a case study locations are on Watershed (DAS) Indragiri Hulu section. This study used two methods, they are GR4J model and Wavelet-GR4J transformation combining method. This Wavelet-GR4J transformation Combining method is expected can increase the Nash -Sutcliffe Coefficient and the Correlation Coefficient. GR4J model used input data including daily rainfall data and at lubuk ramo station and daily potential evapotranspiration data which is the result of the CropWat program with climatology input data at sentajo station. The result of this model watershed by using debit data of daily observation at pulau berhalo station. In the next stage, calibration will be done in the certain year, verification in the next year, and simulation which is the combination of kalibration and verification. Simulation of Wavelet-GR4J Transformation resulted value equation Nash-Sutcliffe Coefficient of 12,740% and the Correlation Coefficient (R) of 0,378. In the process of Wavelet-GR4J Transformation combining method produced a better result then GR4J model based on the value of Nash-Sutcliffe Coefficient and Correlation Coefficient. The simulation of Wavelet-GR4J Transformation method resulted value equation Nash-Sutcliffe Coefficient of 12,805% and the Correlation Coefficient (R) of 0,380, it can be categorized “not sufficient” and “low” which mean that the GR4J model and the Wavelet-GR4J Transformation combining method can be said “not effective”Keywords: wavelet transformation, GR4J, calibration, verification, simulation.
Analisis Keandalan Sistem Keselamatan Bangunan Terhadap Bahaya Kebakaran (Studi Kasus: Gedung Rumah Sakit Ibu Dan Anak Eria Bunda Kota Pekanbaru) Pratama, Rangga; Trikomara, Rian
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 research was done by applying a tool checks reliability of building against fire on Eria Bunda Mother and Children Hospital City of Pekanbaru. This examination aims to determine the level of reliability in the form of building Value Reliability System Safety Building (NKSKB) against fire which is the total percentage of the sum of the percentage of building safety system components (KSKB) the completeness tread, means of rescue, passive protection system and active protection system . The results in the form of value system reliability against fire safety of building (NKSKB) in building Eria Bunda Mother and Children Hospital with 17,03% tread completeness assessment, system safety means 16,35%, 17,68% passive protection system and active protection system 6,18%. The level of reliability of fire protection systems in building Eria Bunda Mother and Children Hospital as a whole is "Less" with a percentage of 57,24%.Keywords: completeness tread, means of rescue, passive protection system, active protection system.
Perancangan Antena Mimo Array 37 GHZ Untuk Jaringan Komunikasi 5G Sholeh, Mohamad; Rahayu, Yusnita
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 development of communication technology was started from first generation (1G) to fourth generation (4G), which each new generation always comes with a significant increase in performance. With the increasing of wireless mobile devices and services in the future, there are still some problems and challenges that can not be accommodated even by 4G, such as high data rates, area coverage, and low energy consumption. The 5G (Five Generation) technology presents to solve problems and the need to improve network efficiency and capacity, improved data rate with better coverage at lower power consumption. This research will design a planar array microstrip antenna, MIMO (Multiple Input Multiple Output) 2x2, which works at a frequency of 37 GHz using CST (Computer Simulation Technology) Microwave Studio software. The antenna was designed by using RT-duroid 5880 substrate with a thickness of 0.508 mm. This design uses the technique of Microstrip Line/T-junction consisting of 4 elements. The simulation results obtained for 4 elements array are the return loss of -28.483 dB, the bandwidth of 2,12 GHz, VSWR (Voltage Standing Wave Ratio) ≤ 1,078 and gain ≥ 11,8 dBi, The results obtained by MIMO 2x2 antenna are the return loss of -26,767 dB, the bandwidth of 2,12 GHz, VSWR ≤ 1,096 and gain ≥ 18,7 dBi. Keywords: Return loss, bandwidth, VSWR, gain
Pemanfaatan Raspberry Pi 3 Pada Pembuatan Sistem Absensi Berbasis Pengenalan Wajah Siti Komariah; Feri Candra
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract

Biometrics is an automatic method for recognizing someone based on physical or behavioral characteristics, including biometric Face Recognition which is generally used for identification and verification. Identification is the process of recognizing and matching of a it is person's biometric data in a database that contains a person's character record. Verification is the process of information determining whether someone is in accordance with his/her look. In this research, a biometric attendance system designed using a tool called Rasberry Pi 3 (Mini Computer) for taking user face images (photo grid) then planting is eigenface algorithms and artificial neural network. Rasberry Pi often abbreviated as Raspi is a single board computer whereas whereas the it’s size same as credit card that can be used to run official programs, computer games and media player for high resolution videos. Eigenface algorithm is used for the process of recognizing facial patterns. Eigenface is an eigenvalue and eigenvector approach. Based on this approach the classification is done to recognize faces in training with objects that have been stored in the database. ANN is used because it has ability to learn from the data trained. With the design of this attendance system, it is expected to avoid negative things, for example, the loss of student attendance data because there are too many signatured papers in the attendence list for each subject. The results of testing face data used 3 hidden layers where the first layer has 32 neurons, the second layer has 18 neurons, and the third layer has 8 neurons. It concludes that the face recognition system succed to recognize somebody’s face as his/her photograph with accuracy of 100%.Keywords : Face Recognition, Raspberry Pi 3, Eigenface, Artificial Neural Network.
Kajian Tingkat Kebisingan Di kawasan Bandara Pinang Kampai Kota Dumai Adillah, Muhammad Iqbal; Sasmita, Aryo; Andrio, David
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
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Abstract

Pinang Kampai Airport Dumai City serves domestic flights, and home base for BNP-B (National Board for Disaster Management) helicopters. The noise level is influenced by the flight activity when monitoring the area of Dumai City Fire Area around it. The purpose of this study was to determine the noise intensity at the airport and surrounding residential areas, the duration of noise exposure, and the mapping of the noise dispersal pattern. Noise measurement method based on KepMenLH No 48/1996, and the device in use is Sound Level Meter (SLM). Measurement of sound pressure level (Leq) lasts for two days on weekdays and holidays. Based on the results of data processing of 8 measurement points conducted on weekdays and holidays, the results show the highest noise level is on the southern runway area on the working day of 100.8 dB and on the holiday of 101.0 dB (exceeding the standard quality of 85 dB, Kepmenaker No. 51/1999) and the highest noise level in the residential area around the airport on weekdays are in the eastern settlement of 82.41 dB and on holidays of 86.59 dB which overall exceeds the 55 dB determined standard, KepMenLH No. 48/1996). Noise control can be done by making noise barrier and using noise-absorbing materials on building construction. Keywords: Noise, airport, PinangKampaiAirport
Kuat Tekan Beton Pasca Bakar Menggunakan Hammer Test Dan Compression Testing Machine (Ctm) Widianto, Devit; Suryanita, Reni; Sitompul, Iskandar Romey
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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Abstract

Concrete is a construction material that is widely used in construction because it has many advantages. One of the advantages of concrete construction is that it is resistant to fire. However, the occurrence of a fairly high temperature change will have an impact on concrete, one of which is the change in the strength of the concrete. Therefore, this research was conducted to determine the physical change and the change of strength in post burn concrete. The concrete strength was measured with hammer test and compressive test. 18 concrete cylinder with size of 150 mm and height of 300 mm were fabricated with 3 quality variations, namely 20 MPa, 25 MPa and 30 MPa. Concrete were burned for 30 minutes with the temperatures range between 680-700 oC, and the concrete strength was calculated by using Nash’t and Agunwamba equation. The results showed that the concrete strength predicted by using Nash’t formula was 17, 18 and 21 MPa, respectively whice those predicted Bay pusing Agunwamba was 21, 23 and 26 MPa respectively.Keywords: Compressive strength, concrete after burn, Hammer Test, Compression Testing Machine (CTM).
Pengaruh Konsentrasi HCL Dan Deterjen Terhadap Fluks Dan Resistance Removal Untuk Pencucian Kimia Membran Ultrafiltrasi Pada Pengolahan Limbah Cair Tahu Romfis, Dio; Syarfie, Syarfie; Bahruddin, Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
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One of the challenges / constraints of the use of membrane technology in the filtration system is fouling. This research aims to determine the effect of the concentration of HCl and detergent removal in flux and resistance affect the performance of ultrafiltration membranes. This research uses the membrane system to cross flow with varying operating pressure of 0.2 bar, 0.4 bar and 0.6 bar, the variation in concentrations of HCl and detergent 1.5%, 2% and 2.5%. The screening process liquid waste out for 120 minutes and each time washing to obtain HCl approximately 60 minutes and detergents lasted 30 minutes. The highest level of effectiveness laundering obtained 67.63% use traditional detergents 2.5%, the highest washing efficiency is based on the value of flux recovery by 85.55% and 67.62% removal resistance value. The highest flux value after chemical leaching is 0.3896 ml / menit.cm2 at an operating pressure of 0.6 bar membrane and chemical concentration of detergent 2%.Key word : flux recovery, membrane ultrafiltration,resistance removal
Pengaruh Konsentrasi Palm Oil Mill Effluent (POME) Kinerja Konsorsium Mikroalga-Bakteri Dari Palm Oil Mill Effluent (POME) Untuk Produksi Lipid Menggunakan Multitubular Airliftbioreactor Andhika Chandra; Shinta Elystia; Sri Rezeki Muria
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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Abstract

Palm Oil Mill Effluent (POME) is wastewater that has high organic mattercontent. The treatment process of Palm Oil Mill Effluent (POME) generally with the open pond system can be one of the contributors of greenhouse gases in the form of CO2 and CH4 gases. To prevent the release of greenhouse gases, microalgae are used by using POME which contains organic ingredients as a nutrition source for microalgae cultivation media to produce raw materials for biofuel (in the form of lipids and carbohydrates) that can be used to overcome the energy crisis. In this study, a microalgae-bacteria consortium of POME wascultivated in POME medium with a variation of injection of CO2 gas flow with variations (0,3; 0,5; 0,7) l/minute. The cultivation process was carried out for 13 days with radiation using sunlight. The results showed that at a flow rate of 0.5 l /min the lipid content was 45.21% of dry weight with μ = 0.850 / day. Theefficiency of removal of organic matter in the form of COD and total nitrogen is 87,36% and 69.92%.Keywords: Consortium, Microalgae, Indigenous, CO2 , Flow rate, Injection , Lipid, COD, Nitrogen total, Palm Oil Mill Effluent (POME)

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