cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota pekanbaru,
Riau
INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Engineering,
Engineering
Arjuna Subject : -
Articles 3,145 Documents
 274   275   276   277   278 
Aplikasi Re-Used Katalis Pada Sintesis Emulsifier Ricfan Anggriawan; Ida Zahrina; Zuchra Helwani
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Mono and diglycerides (MDAG) are a group of synthetic emulsifiers usually used for food emulsion. MDAG can be obtained by the esterification process of fatty acids and glycerol with Deep Eutectic Solvents (DES) as a catalyst. The re-used catalyst method is one of many methods to determine the effectiveness of DES as a catalyst in the esterification process. DES is a mixture of at least two components, there are Hydrogen Bond Acceptors (HBA) and Hydrogen Bond Donors (HBD) which form eutectic phases with a melting point is lower than the constituent component. Re-used catalyst DES was tested in optimum condition with temperature 150°C, 30 minutes reaction time, 5 wt% catalyst, with 6:1 ratio mol between glycerol and oleic acid, and the conversion is 95%. The result of 5 times re-used catalyst is the conversion has got a not too significant reduction, which indicates that the phosphonium-based DES catalyst has a strong resistance to maintaining high catalyst activity in the esterification process. Keywords: esterification, catalyst, DES, Emulsifier, re-used catalyst.
Rancangan Lereng Tambang Batu Bara Terbuka Dengan Metode Probabilistik Frans Rezal; Muhamad Yusa; Gunawan Wibisono
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Coal was a fossil fuel. The general sense was a combustible sedimentary rock, formed from the deposition of organic matter, primarily the remains of plants and were formed through the process of coalification.One of the coal deposits was in Bangko Tengah Suban Jeriji, Muara Enim Regency, South Sumatra Province. This research examines the design of the mine pit geometry by taking into account safety andeconomic factors with probabilistic methods. The geometry of mining that was used in this design include high levels of 18 meters and a width of berm 29 meters.The result of analysis show slopes for the singleslope 1:0.50 for overburden, interburden, and underburden, 1:0.75 for seam D, and 1:1.00 for seam E. The oveall slope have a depth of 200 meters with an angle of 27o for Highwall and 12o for Lowwall. The Safetyfactor obtained in this design are 2.101 with PoF 0% for Highwall and 3.575 with PoF 0% for Lowwall. There are 4 inter-ramp on this design with safety factor 1.260, 1.569, 3.495, and 3.455. All of inter-ramphave PoF 0%. The value of the stripping ratio of this design is 12.812.Keyword: Single Slope, Overall slope, FK, PoF.
Perancangan Komponen Sistem Hidrolik Pada Mesin Press Kapasitas 50 TON Apriel Fernandus Nainggolan; Herisiswanto Herisiswanto; Dedi Rosa Putra Cupu
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Hydraulic press machine is a device that is used to mass produce a component with the same shape and size, so that it becomes the desired production item. In this research is proposed to design the component of a hydraulic press machine system for a maximum capacity of 50 ton. The design was begins by observing the needs and workings of the system, followed by analysis and calculation components of hydraulic system, then engineering drawings and completion. The results design was obtained a hydraulic system capacity of 50 ton, then determined the working fluid pressure (P) of 250 bar = 250. 105N / m2. Loading force is obtained to calculate things related to the hydraulic system namely cylinder dimensions and load holding strength, the workings of the system to determine the main components and determine the flow rate capacity in the cylinder. From the results of the calculation, the maximum loading force = 490,500 N, the maximum tensile stress = 1172 N / mm2, and the material permit stress = 116.5 N / m2, with the material used is nickel molybdenum chromium steel (JIS G4103 SNCM25). Analysis results show that it is proven to work as expected. Keywords: Hydraulic system, Pressure, Hydraulic cylinder
Analisa Pembebanan Statik Pada Fuselage Wahana Terbang Tanpa Awak Atha Mapper 2150 Dengan Simulasi Ansys Jefri Albukhari; Kaspul Anuar
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Fuselage is the main structure of unmanned aerial vehicles where as an electronic space, payload, and as a wing support and tail of the ride. Fuselage is charged during take-off, cruise, and landing. One of the charges on the fuselage is the mass pressure of the electronic as well as the transported payload. This study aims to find out the strength of the structure on the fuselage design of the Atha Mapper 2150 unmanned vehicle. Simulation of the strength of the fuselage design structure of the Atha Mapper 2150 unmanned vehicle was conducted with the help of Ansys software. From the results of the simulation of the strength of the structure in the fuselage design obtained the maximum deflection value occurred at 0.25816 mm (in the middle of the fuselage), the maximum voltage occurred at 1,876 MPa (wing connection with fuselage) and the minimum safry factor value of 15.Keywords: Atha Mapper 2150, Fuselage, Structur.
Sintesis dan Karakteristik Membran Komposit Kitosan-Silika Untuk Pengolahan Limbah Cair Hotel: Variasi komposisi Kitosan-Silika Baktiar Simaremare; Jhon Armedi Pinem; Syarfi Daud
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The membrane is a selective and semipermeable layer that is between two phases, namely the feed phase and the permeate phase. Membrane synthesis using chitosansilica with phase inversion method. The purpose of this research were to make membranes of chitosan-silica for hotel waste water treatment with 2,5:2,5, 2,5:3, 2,5:3,5, 3:2,5, 3:3, 3:3,5, 3,5:2,5, 3,5:3, 3,5:3,5, 4:2,5, 4:3, dan 4:3,5 gram chitosansilika. This research produced porous membrane. The characterization membranes analysis were SEM analysis, tensile strength, flux and rejection. Tensile strength analysis showed that membrane with the highest tensile strenghth was 52,235 Mpa for membrane with 4:3,5 gram composition of chitosan-silika. Based on Flux and rejection results showed that membrane with 3:3,5 gram composition of chitosan-silika was the most effective performance with the flux 21,98 L/m2.h and rejection elimination of BOD was 54,32%, COD was 72,44% and TSS was 84,32%. Keywords : flux, membrane, rejection, ultrafiltration
Perancangan Papan Informasi Digital (Pindit) Berbasis Web Online Pada Jurusan Teknik Elektro Universitas Riau Syachrodi Syachrodi; Salhazan Nasution
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Digital signage is a medium that used to inform the direct information and announcement faster, precisely, and up to date. On Electronics Engineering at the University of Riau, the medium that used to inform the information and announcement still use conventional methods, that is wall magazine and using social media WhatsApp. To maximize the information and announcement system, we design digital signage based on the online web that can be accessed via an internet connection. The result of this research is to get better information and announcement system on Electronics Engineering at the University of Riau. Not just that, the admin can manage all of the information that should be informed to academic civitas easily. The test method used in this research is the black box testing and the system build with framework CodeIgniter and MySQL database. Keywords: digital signage, raspberry pi, web, rfid, announcement
Prediksi Terhadap Emisi Karbon Dari Kegiatan Transportasi Di Wilayah Pengembangan V (WP V) Kota Pekanbaru Harimurti, M. Arief; Reza, Muhammad; Sasmita, Aryo
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pekanbaru City as the capital city of Riau Province has increase in population especially in development area V (WP V). It was followed by an increase in the number of vehicles as a transportation and affect the amount of CO2 emissions generated from each vehicles. Green Open Space (RTH) is one of solution in order to handling the increasing of emissions because by absorb CO2 gas emissions. This research was conducted to determine the amount of motorized vehicles and the value of CO2 emissions produced each day, as well as the value of the ability of the green space absorption of CO2 emissions. The method used is recording traffic activities to calculate the amount of CO2 emissions and calculate all public green open space with a type of vegetation cover in the form of grasslands and trees that have a diameter of ≥ 20 cm, and the percentage of green space absorption. Research results obtained, namely the value of CO2 emissions from transportation in Pekanbaru Development Area V amounted to 595.029,20 tons of CO2 / year. While the ability to absorb CO2 by public green space in the Pekanbaru Development Area V is only 24.806,82 tons of CO2 / year. The results of the analysis show that public green open space in the Development Area V Pekanbaru in terms of absorption of CO2 emissions from transportation is still not enough with a percentage of only 3,72 %. Power absorption of green space is planned to reduce all CO2 emissions from transportation activities in Pekanbaru Development Area V, which is 869.365,529 tons of CO2 / year. Key Words : CO2 Emissions, Green Open Space, Pekanbaru Development Area V, Transpotation
Kinetika Adsorpsi Pada Penjerapan Ion Timbal Pb2+ Terlarut Dalam Air Menggunakan Partikel Hydroxyapatite Fernando Susilo; Ahmad Fadli; Silvia Reni Yenti
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research are to observe the effect of mass adsorbent (hydroxyapatite) and temperature in adsorption of metal ions Pb2+ using adsorbent hydroxyapatite (HAp) and determine a suitable adsorption kinetics model. Pb2+ solution 9,982 mg/L of 500 mL where mixed with variation of mass HAp (0.3 g, 0.5 g and 0.9 g)  in a glass beaker while stirred with rate 100 rpm at variation temperature (27, 40, and 50 oC).Pb2+ solution was taken at a certain time, then the solution  filtered and analyzed by atomic absorption spectrophotometer (AAS). The result showed that the adsorption of metal ions is pseudo second order reaction with the higher mass of adsorbent and with lower temperature. In this research maximum constant value of adsorption kinetic was 0.2758 g/mg.min obtained with mass of adsorbent 0.9 g and temperature of 27 oC. While minimum value of adsorption kinetics constant 0.0389 g/mg.min obtained with mass of adsorbent  0.3 g and temperature of 50 oC.  Keywords:  Adsorption, Hydroxyapatite, Kinetic, Timbale.
Desain Benzene Distiller Pada Prarancangan Pabrik Benzene, Toluene, Dan Xylene Menggunakan Proses Cyclar Bp/Uop Elisa Pebrianti
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Benzene, toluene, and xylene (BTX) are petrochemical materials that are produced through a catalytic reforming process from naphtha. Benzene and toluene are among the products that are widely used for chemical raw materials, one of which is toluene which is used as a solvent and intermediate in the manufacturing process of high octane chemicals and gasoline components, while the demand for xylene has increased along with the increasing demand for polyester fibers and films. This factory is designed with a production capacity of 602.606 tons/year. One of the main equipment in this factory is a benzene distiller. This apparatus is designed to separate benzene from toluene, xylene, pentane, pentylene, hexane, hexylene, octylene, octane and heptylene. This benzene distiller is a sieve tray type distillation tower. This benzene distiller is operated at a temperature of 64,77°C and a pressure of 1,01 bar. The distillate flow rate of 12036356,37 lb/hr consists of pentylene, pentane, hexylene, hexane, and benzene and the bottom flow rate is 843889,17 lb/hr consisting of octylene, octane, hexylene, hexane, heptylene, xylene, and toluene as well as the flow rate of the benzene product was 48669,52 lb/hr. The height of the tower is 28,88 m and a diameter of 5,94 m with a torispherical type head and skirt as supports.Keywords: BTX, benzene distiller, catalityc reforming, sieve tray
Kaji Eksperimental Turbin Air Darrieus Tipe-H Menggunakan Blade Hydrofoil Standar Naca 0018 Arpan Cesar; Iwan Kurniawan
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

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study was to experimental study of the Darrieus type H turbine, using NACA 0018standard hydrofoil blade, which variations of 3 blades and 6 blades of turbine diameter of 0.44 m x 0.15 m on theouter turbine and 0.18 x 0.14 m on turbine section with additional of 0.10 m chord length and 0º to 360º attack anglevariations. The variations of velocity flow in water (V) of 0.3 m/s and 0.65 m/s in the water tunnel dimensions of 6 mx 0.6 m x 1 m. The two types of torques were obtained at rest (static torque) for each angle of the azimuth and movingconditions (dynamic torque) from no load and until it stops spinning by utilizing the braking force on the pulley withvariations in loading. In the first test with a variation of 3 blades and the water velocity of 0.3 m/s for the static torquewas obtained 0.288 Nm and a variation of 6 blades of 0.336 Nm. Whilst, a speed of 0.65 m/s static torque generatedat a variation of 3 blades that was 0.36 Nm and a variation of 6 blades of 0.384 Nm for dynamic torque produced 13RPM, which a variation of 3 blades speed of 0.3 m/s and a speed of 0.65 m/ s resulted 23 RPM. The experimentrevealed a variation of 6 blades with a speed of 0.3 m/s at 16 RPM and a speed of 0.65 m/s of 26 RPM. Based on theresults of the study, it can be concluded that the Darrieus hydrokinetic of turbine variation of 6 blades produced moredynamic torque that was compared to the 3 blades variation. It was due to the number of blades greatly influence ofthe kinetic energy absorption of the water to be converted into dynamic and static torques.Keywords: Darrieus turbine, static torque, dynamic torque,NACA 0018

Page 276 of 315 | Total Record : 3145

 274   275   276   277   278 

Filter by Year

2014 2022


Reset
Filter By Issues
All Issue Vol 9 (2022): Edisi 1 Januari s/d Juni 2022 Vol 8 (2021): Edisi 2 Juli s/d Desember 2021 Vol 8 (2021): Edisi 1 Januari s/d Juni 2021 Vol 7 (2020): Edisi 2 Juli s/d Desember 2020 Vol 7 (2020): Edisi 1 Januari s/d Juni 2020 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 6 (2019): Edisi 1 Januari s/d Juni 2019 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5 (2018): Edisi 1 Januari s/d Juni 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 5, No 1 (2018): Wisuda April Tahun 2018 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 2 (2016): Wisuda Oktober Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 3, No 1 (2016): Wisuda Februari Tahun 2016 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 2, No 1 (2015): Wisuda Februari Tahun 2015 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 Vol 1, No 1 (2014): Wisuda Februari Tahun 2014 More Issue