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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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Adsorpsi Pospat (PO4-3) Limbah Cair Laundry (Artificial) Menggunakan Arang Aktif Dari Tongkol Jagung Dengan Variasi Massa Arang Aktif Dan Temperatur Adsorpsi Arianty Septia Ningsih; Syamsu Herman; Silvia Reni Yenti
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

The development of laundry services has an impact on the volume of wastewater from laundry activities which has also increased. Disposal of laundry waste containing phosphate is 9.9 ppm while the limit on water emissions is 1 ppm so that the presence of excessive phosphate in the laundry liquid waste causes eutrophication. On the other hand, corn cobs waste is agricultural waste that can be processed into activated charcoal which is then applied as an adsorbent. Therefore, this study aims to find a solution to the two problems above by making the corncob as an adsorbent material for handling phosphate waste. This study shows the effect of activated charcoal mass from corn cobs waste on phosphate adsorption in laundry liquid waste and the effect of stirring temperature on the phosphate adsorption process of laundry liquid using activated charcoal from corn cobs waste as an adsorbent. The first determines the equilibrium time by means of 2 grams of activated charcoal put into a beaker glass with a Na3PO4 (500 ml) solution at a speed of 100 rpm. After the time is obtained, the equilibrium is only made for another variable. From this study, it was found that the active charcoal mass of corn cobs which best absorb Pospat solution was 3 grams and the best temperature at 50oC with adsorption efficiency of 63.30%.Keywords: activated charcoal, adsorbent, waste, phosphate, corn cobs
Perancangan Jaringan LTE FDD (Frequency Division Duplex) Dengan Frekuensi 1800 MHZ Di Kabupaten Indragiri Hulu Syahputra, Adi; Sari, Linna Oktaviana
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

Long Term Evolution Advanced (LTE) is a communication standard of access based on GSM / EDGE and UMTS / HSPA networks. One of the advantages of LTE is that it offers high data transfer speeds if compared to previous Network Technology. Nowadays, Network Technology entered the Industrial 4.0 where as the system covers physical cyber, internet for everything, cloud computing and cognitive computing all things cause all activities are influenced by networks. However, the allocation of LTE development in Indonesia is not yet widespread, especially in small areas such as Indragiri Hulu Regency. The LTE network in Indragiri Hulu Regency is still categorized as not optimal based on network analysis using a Network Tracking Application, was called Nperf. Therefore this paper aims to design an LTE FDD network in Indragiri Hulu District using Software Radio Planning Atoll with frequency of 1800 MHz. This study uses two scenarios, namely with a bandwidth of 5 MHz and 10 MHz. Then the scenario will be analyzed by comparing the optimal data output. The parameter test results show that the Coverage by Signal Level in the 10 MHz scenario is superior at 99.32% with the signal value > -80 dBm it is categorized very good on the Shapefile (SHP) produce in the 5 MHz scenario the result value is 98.84% on the Shapefile (SHP) map caused by the parameters used on the otherside different wider radius value for each cell. It causes interference. The comparison of Monte Carlo simulation between 5 MHz and 10 MHz bandwidth at 1800 MHz frequency that the 10 MHz bandwidth of users connected to the network is more effective with a value of 96.325% than the 5 MHz bandwidth of 94.95%. It can be concluded that the scenario of using 10 MHz bandwidth is more optimal used in the construction of LTE with a frequency of 1800 MHz.Keyword : LTE, Software Radio Planning Atoll, Signal Level, Bandwidth, Monte Carlo Method.
Studi Penggunaan LPG Dari Aktivitas Rumah Tangga Di Wilayah Pengembangan IV Kota Pekanbaru Ribka Yunila; Aryo Sasmita; Jecky Asmura
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The purpose of this study was to find out the use of LPG household fuels in WP IV Pekanbaru City.Random sampling method. Total sample is 268 families. This study uses descriptive analysis that contains secondary data, study of literature, and primary data. About 85% of respondents only use LPG as domestic fuel,12% use LPG fuel and other fuels, and 3% use other LPG.Keywords: Use of household LPG, LPG, and Household
Ekstrak Kulit Pisang (Musa Paradisiaca) Sebagai Green Corrosion Inhibitor Pada Baja Karbon Rendah Dalam Larutan Hcl 0.5 M Dan 1 M Sry Utami Pardede; Komalasari Komalasari; Zultiniar Zultiniar
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

Corrosion has been identified as one of the major problems in the chemical industry, especially in the pipeline’s system. The inhibitor is the most effective way to protect the metal against corrosion. The natural corrosion inhibitor is chosen as an alternative because it’s safe, widely available, low cost, biodegradable and environmentally friendly. This study aims to know the corrosion rate and the inhibition efficiency of banana peel extract for low carbon steel. Banana peel extract was obtained by soxhlet extraction using ethanol-water as the solvent. Corrosion rate were determined by using the weight loss method. Low carbon steel was immersed in HCl 0.5 m and 1 M with and without banana peel extract 0 g/L, 0.5 g/L, 1 g/L, 1.5 g/L and 2 g/L by immersion time 24 h. The result showed that corrosion rate decreases on increasing of concentration of the extract and increases the inhibition efficiency. The maximum efficiency was obtaining at 2 g/L of corrosion inhibitor in HCl 0.5 M with inhibition efficiency 82.19%.Keywords: banana peel extract, corrosion, HCl, inhibitor, low carbon steel
Bangkinang Trade Center Dengan Pendekatan Arsitektur Kontemporer Winny Zuliati; Wahyu Hidayat; Mira Dharma Susilawati
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

Bangkinang currently does not have any appropriate facilities yet to accommodate and manage increasing trade activities. The growth of modern shopping centers as commercial areas reflects a form of trade and entertainment activities in a city that includes trade and service. Bangkinang has potency and competitiveness, so that economic development is needed for advancing the regional economic sector. Bangkinang Trade Center is a trading business center that can accommodate a variation of activities ranging from recreation, culinary, and buying and selling various kinds of goods to handicraft products. Trade Center is designed with a Contemporary Architecture approach aimed at making this facility grow rapidly and progressively, so it can make people interested to visit. The results of this design with the Stability concept are interpreted as stable and balanced. This concept is adapted to the guidelines of the theme of contemporary architecture and has a close relationship with the Trade Center. The main facilities that available at this Trade Center are convention rooms, exhibition halls, and retailers to accommodate traders. There are also supporting facilities such as restaurants and food court.Key word: Contemporary Architecture, Stability, Trade Center
Sistem Identifikasi Absensi Berbasis Telapak Tangan (Palm Print) Sugianto, Aktub; Sari, Linna Oktaviana
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

Biometrics is an automatic method of getting to know someone based on physical characteristics such as iris, fingerprints, palms and other organs. The palm is one of the human organs that is commonly used as identification because it is unique. The palms also can’t change for decades, so they can be used in identification systems. In this study the application of palm-based identification systems will be designed using 2 PCA (Principal Component Analysis) and Back Propagation Neural Network (BPNN) methods. The principle method of PCA aims to simplify the variables to be observed by reducing the size of the dimensions. Furthermore, the Back Propagation Neural Network (BPNN) method is one of the machine learning methods that is suitable for qualitative data analysis (binary data). This BPNN is used to obtain high accuracy from the results of the analysis. This study using Matlab R2016a software for making palm recognition system applications. Matlab is used because of the image processing toolbox which has many complete tools and functions for processing and analyzing images. Conclution of this study have a 90% success rate on the PCA and BPNN methods with different palm samples. Keywoards : Identification, Matlab R2016a, Palm Print, Recognition, and Attendance.
Studi Performansi Las Gesek Rotary Pada Penyambungan Mild Steel Dengan Stainless Steel 201 Rasyid, Kurniawan; Yohanes, Yohanes
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

Friction welding is a type of solid state welding with high quality results from two components that are similar or different so that it attracts a lot of attention. With phenomena that occur during welding, the finite element method becomes a very appropriate method to be developed in this welding process. In appropriate and easily simplified settings, this method is simulated in Finite Element Method based applications. Based on previous observations and research, the right time to provide forging loads on welding is very difficult to determine. For that we need to do a simulation before doing welding so that we can get a picture to do welding with good results, and with this simulation it is also expected to be able to know the temperature propagation in the specimen against the welding time.Keywords : Friction Welding, Simulasi, Finite Element, Dissimilar Material, Timing of Diffusion.
Studi Eksperimental Sambungan Butt Joint Dengan Metode Friction Stir Welding Menggunakan Material Nylon 6 Poliamida (PA) Sihotang, Samsul Bahri; Arief, Dodi Sofyan; Dalil, M.
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Friction Stir Welding (FSW) or often called friction welding is one of the mechanical welding methods using friction between the surface of the tool and the surface of the material so that friction occurs and causes heat on the surface of the material for the welding connection process. The friction surface impacts translational motion caused by the rotational pressure of the tool and axial force (forging) to push the friction surface. Retrieval data that will be varied on translational motion speed starting from 12.5 mm / minute, 20 mm / minute and 25 mm / minute. In this study the shape and dimensions of the material used were 100 mm long, 50 mm wide with a thickness of 5 mm while the types of tools used in this study used a type of cylinder with dimensions of 6 mm pin, 25 mm shoulder and 50 mm tool length. In this study the data collection process uses thermal devices and jigs. Where the function of this thermal heater is to lift the temperature of the material that is in accordance with what is needed (melting point). And the function of this jig is to grip or clamp the material on the position of the horizontal milling machine. The purpose of this study was to study the method of pulling welding friction using the Friction Stir Welding (FSW) method on nylon 6 material using the ASTMD-638-IV standard.Keywords : Stir friction welding, weld surface, friction weld, polyamide polymer.
Pengaruh Penambahan Bakteri Pseudomonas Sp. Terhadap Degradasi Pestisida Berbahan Aktif Profenofos Pada Media Tanah Nora Aprilin; Aryo Sasmita; Elvi Yenie
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

The needs for agricultural products are increasing along with population growth, but the area of agricultural land is decreasing and so as plant pest organisms. Therefore, one of the intensifications of agricultural policies is to use pesticides. The aim of this study was to determine the efficiency of degradation of pesticide-contaminated soil with active ingredients profenofos in the bioremediation process with the addition of Pseudomonas sp. This study used a bioremediation reactor with a size of 20 cm x 35 cm, pesticides with active ingredients profenofos and pesticide residue testing carried out using Gas Chromatography-Mass Spectrometry (GC-MS) instrumentation. The research variables include variations in the concentration of the bacterium Pseudomonas sp. that is 2 ml/kg, 3 ml/kg and the control reactor with bioremediation time for 21 days. The results showed that the bioremediation method using Pseudomonas sp. able to set aside pesticide residues made from with active ingredients profenofos in soil media. Pollution removal efficiency for bacterial variation of 2 ml/kg was obtained of 93.67%, the bacterial variation of 3 ml/kg of 96.33% and control reactor was 76.33% with a residence time of 21 days.Keywords: Bioremediation, Profenofos, Pesticide Residue, Pseudomonas sp.
Pengaruh Diameter Pasir Silika Dan Zeolit Pada Saringan Pasir Lambat Dalam Menurunkan Parameter Kekeruhan Air Sungai Siak Denisa Nurmalia; Shinta Elystia; Aryo Sasmita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

The need for clean water is needed by various groups of people. People who live on the banks of the Siak River in Limbungan Village, Rumbai Pesisir Sub-District use Siak River water for clean water of bathing, washing and latrines by used it directly. Siak River water used by residents has several parameters that exceed the quality standard so that the use of river water must be processed first. One simple system that can process Siak River water is a slow sand filter with the addition of zeolite. The purpose of this study was to determine the efficiency of decreasing turbidity parameters by slow sand filters. In this study variations in the diameter of silica sand – zeolite (0,15 – 0,35) mm, diameter of silica sand – zeolite (0,35 – 0,55) mm and variations in flow rate filtration on slow sand filters (0,1 ; 0,2 and 0,3) m/hour. Based on the results of the study, the highest removal efficiency was found in slow sand filter reactors with media diameters (0,15 – 0,55) mm and with flow velocities of 0,1 m / hour, removal of turbidity is 97,08%Keywords: Slow Sand Filter, Silica Sand, Zeolite, Siak River Water

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