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
 252   253   254   255   256 
Potensi PET (Polyethylene Terephthalate) Sebagai Bahan Baku Ecological Brick Brillyan Rahman; David Andrio; Muhammad Reza
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

The use of plastics and plastic-based goods is increasing with the development of technology, industry, and population. Increasing plastic demand automatically increases waste generation as well. PET is a type of plastic type 1. Brick is a building material that is still very important in construction work. In this study, we propose the use of PET waste and the potential of PET in minimizing PET waste in Indonesia. Our results show that ecological brick making products still meet the requirements of SNI 03-0349-1989, and eco-brick making has the potential to reduce PET waste in Indonesia. Keywords: ecological brick, plastics, polyethylene terephthalate
Perancangan Sistem Pendinginan Peltier Kapasitas 7 x 350 ml Darah Tri Bambang Lesmana; Awaludin Martin
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

Based on WHO Standards, Indonesia has not fulfilled the minimum blood supply for its 258 million populations. So, when needing certain types of blood that are available outside an area must go through the process of blood distribution. During this time, the distribution only uses ice packs in maintaining blood temperature. The use of ice packs in the distribution process is very risky because ice packs quickly adjust to the ambient temperature. Then, the temperature in the blood is feared more than the rule. Therefore, the design of blood carrier box with cooling components from the peltier element are intended to overcome the problem of blood distribution by being able to maintain blood in the temperature range of 2-10oC. The electrical power maximum of cooler design for 7x350 ml blood bags was obtained at 283.2 Watt. Keywords : Peltier Element, Blood Carrier Box
Pengelolaan Jaringan Single Ssid Menggunakan Controller Access Point System Manager (Capsman) Di SMK Labor Binaan FKIP UNRI Ade Ruslan; Dahliyusmanto Dahliyusmanto
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

To improve the optimization of the internet network, the Vocational High School (SMK) of FKIP UNRI uses the internet network using a wireless network so that all teachers, admin staff, and students can get data from the internet in real-time. SMK Labor has access points with different access point identification names, better known as SSID (Service Set Identifier). Of all the access point devices installed with different SSID names on each device, so that if the user changes buildings, they must reconnect to the SSID in the building. Device configuration is still done manually; therefore, network management impacts the access point management system. The network manager is required to configure the access point devices individually because there is no centralized access point management. To help this success, we need a technology that can manage a network centrally, making it easier to control all wireless access point devices in the network. One example of a wireless device that is often used is a Mikrotik router. Mikrotik has a function to manage a device centrally using the CAPsMAN feature, making it easier for admins to monitor all wireless access point devices contained in the network. With these problems, the author aims to design the management of access points by utilizing the CAPsMAN feature to make it easier for admins to manage and maintain the network at school.Keyword: Single SSID, CAPsMAN, Acess Point, Mikrotik
Organosolv Pulping Batang Sawit Bebas Pati Febryanto Febryanto; Zulfansyah Zulfansyah; 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

Oil palm trunk are solid waste with considerable potential and have not been used optimally. Oil palm trunk can be used as raw materials for fiber-based industries such as the pulp and paper industry, starch industry, and other timber industries. The objectives of this research is to obtain the characteristics of pulp (yield, alpha cellulose and lignin of pulp) and studied the effect of cooking time, temperature, and solid to liquid ratio on the pulp produced. Pulping was performed on a rocking digester with 30 grams of oil palm trunk powder starch free, formic acid as a solvent with reaction temperature (110 °C, 130°C and 150 °C), reaction time (60 minutes, 120 minutes and 180 minute), liquid-solid ratio (10:1 b/b) catalyst H2SO4 0,1% wt. The result showed yield pulp of = 32,78-38,99%, lignin pulp of = 7,22-9,22% and alpha cellulose of 92,46-94,85%. The cooking time and temperature has the most influence the characteristics and response of the pulp. Keywords : formic acid, oil palm trunk, organosolv pulping
Rancang Bangun Pengontrolan Arah Kincir Angin Sumbu Horizontal Menggunakan Motor Servo Andri Minawal; Rahyul Amri
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

Windmills are a tool that can be used to convert kinetic energy in the wind into mechanical energy. The kinetic energy in the wind is in the form of translational energy which is converted into rotational energy and then it can also be used according to a need. Its main task is to convert wind energy into electrical energy, apart from that a windmill is also needed to be able to protect itself from the enormous ferocity of the wind. Protection is carried out at a windmill to prevent overspeed. If there is no protection system, the rotor will rotate to the limit of the capacity of a generator, blades and other rotor components so that it will malfunction and cause danger. In this study, a continuous rotation servo motor is used to control the direction of the windmill with a limited output voltage value. The prototype of this windmill was tested with a wind speed engineered using a fan as the direction of the wind. If the voltage value is below or above the output voltage value limit that has been programmed on Arduino, the servo motor on the windmill will rotate CW 90 °. If the output voltage value is within the normal range, the windmill does not rotate to receive the wind energy it receives. For the test results that have been carried out, the results obtained in the first test when the fan condition is Off, the windmill produces an output voltage of 0V and the windmill rotates CW 90 °. In the second test, when the fan is on, the windmill produces an output voltage of 2.25V, in a condition the windmill does not rotate. Then the fan starts off and produces an output voltage of 0.93V then the windmill rotates 90 ° CW. In the third test when the fan is on and after that the speed of the fan is increased to test the windmill so that it can rotate when getting the upper limit voltage value. When the fan is on, the windmill produces an output voltage of 2.61V on the gauge and the windmill does not rotate. Then the fan speed is increased and rotates CW 90 ° when it gets an output voltage of 3.36V. Keyword: Direction, Windmill, Control, Horizontal Axis, Servo Motor
Perancangan Prototipe Untuk Pengujian Karakteristik Solar Photovoltaic (SPV) Pada Cuaca Kota Pekanbaru Wallsman Lamtota Nainggolan; Iswadi Hasyim Rosma
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

Solar energy in the form of light emitted (radiation) to the earth can be used as the main source to produce electrical energy directly by using the solar photovoltaic function (SPV) or also called the photovoltaic effect. The electrical energy generated from this SPV is in the form of a DC voltage. The energy produced by SPV needs to be researched to understand the characteristics of SPV in different places and conditions. The research conducted was to observe the SPV characteristics for weather conditions in Pekanbaru. Sunlight that radiates on the SPV was placed at an angle of zero degrees horizontally with the surface of the earth. The method that used to obtain SPV characteristics is stand alone solar photovoltaic testing by installing a rheostat (variable resistor) at the SPV output. it's value is 0-100 Ohms which will then be shifted from the largest value to the smallest rheostat value. From the tests conducted will produce SPV characteristic parameter data and can form curves I - V and P – V. The results of real-time measurements produce data to form a characteristic curve, ISC of polycrystalline solar photovoltaic type was 1.0232 V while monocrystalline solar photovoltaic ISC was 0.92912 V. The open circuit voltage (VOC) in both types of solar photovoltaics had the same value which was 20.41 Volts. Keywords: solar energy, solar photovoltaik, rheostat, curves, stand alone
Analisis Pengaruh Perbedaan Rasio Pitch Terhadap Efisiensi Pada Turbin Archimedes Fakhrul Rozi; Asral Asral
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 Archimedes turbine being studied is a type of water turbine for small-scale power plants where the screw water turbine is suitable for rivers in the Indonesian region because the turbine operation only requires a low turbine head, low price, and easy to apply. With the potential for the flow of Koboko waterfall, which is located in Kampar Regency, Riau Province, it is possible to install this screw-type water turbine. In the process of designing the thread of the Archimedes turbine, it is influenced by external parameters (outside turbine radius, turbine length, turbine slope, water flow rate, head) and internal parameters (radius in a turbine, ratio pitch, and the number of blades). The external parameters are determined by the location of the turbine placement while the internal parameters can be determined independently to get the maximum performance from the turbine. In this study, the parameters to be analyzed are internal parameters, namely the ratio pitch. There are two variations in the design of ratio the pitch (Pr) are: 1.5 Ro and 1.2 Ro. Tests are carried out to calculate how much efficiency the Archimedes turbine produces for each ratio pitch and compare each result. The result of this research is that the efficiency of the Archimedes turbine with a ratio of pitch 1.2 Ro is higher than that of a ratio of pitch 1.5 Ro with an efficiency value of 36.3668 %. This efficiency value is obtained at a water flow rate of 0.00009 m3/ s and a turbine tilt angle of 40˚. Keywords : Turbine screw, ratio pitch, head, discharge, angle of placement.
Pengaruh Ukuran Partikel Dan Waktu Kontak Terhadap Penyisihan Zat Organik Dan Mangan (Mn) Pada Air Gambut Menggunakan Tanah Lempung Gambut Yang Diaktivasi Asam Sulfat Sebagai Adsorben Nurul Rahmatika Putri; Syarfi Daud; Edward HS
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

Domestic wastewater contributes greatly to water pollution in urban areas because the application Peat water contains high levels of Mn, Fe and organic substances. If used continuously for a long time can cause negative impacts such as health problems so it needs special processing in order to become clean water. This study aims to determine the influence of particle size and contact time on the efficiency of allowance of organic and manganese substances (Mn) in peat water as well as adsorption capacity in the adsorption process using chemically activated peat clay soil with sulfuric acid as an adsorbent. The study varied the size of adsorbent particles -20 +40, -60 +80 and -80 +100 mesh with adsorbent mass of 6 gr/L and contact time variations of 120, 140 and 160 minutes with stirring speed of 150 rpm. The results showed the allowance of organic substances and manganese (Mn) was best obtained at adsorbent particle size -80 +100 mesh and contact time of 160 minutes with an organic substance allowance efficiency value of 85.31% and manganese (Mn) of 82.27%. The best adsorption capacity is achieved at -80 +100 mesh particle size and 160 minutes contact time with organic substance adsorption capacity value of 61.58 mg/g and manganese (Mn) of 0.099 mg/g.Keywords: Peat Water, Peat Clay Soil, Adsorption, Chemical Activation, Organic Substances and Manganese (Mn)
Perancangan Aplikasi Augmented Reality Berbasis Android Sebagai Media Informasi Ruangan Pada Gedung Fakultas Teknik Universitas Riau Muhammad Sandy Prastyo; Feri Candra
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

In almost every campus, in introducing the campus environment, they still use the OSPEK (Student Orientation and Campus Introduction) method which is currently considered less effective because it is a waste of time. there is currently no digital media that can provide interactive information about buildings within the Faculty of Engineering, University of Riau. Information about buildings in the Faculty of Engineering, University of Riau requires atechnology that is able to display information interactively and is also more interesting for those who want to get information, both from campus residents themselves and people outside campus who want to get information about campus buildings. In designing and building the applications, of course a method is needed in building the desired application. In this study we used the SDLC (Software Development Life Cycle) method with the waterfallmodel where in this model there are several stages, namely the Analysis Phase, Design Stage, Implementation Stage, Testing, and Maintenance. in using this application we use markers as based tracking in displaying information objects. and it can be concluded that only markers that have been registered can display information about buildings within the University of Riau Faculty of Engineering.Keywords: Augmented Reality, Android, University of Riau, SDLC, waterfall
Kaji Numerik Pengaruh Beban Awal, Kecepatan Permukaan Dan Radius Bearing Terhadap Ketebalan Lapisan Film Dan Tekanan Elastohydrodynamic Pada Cylindrical Roller Bearing Menggunakan Metode Beda Hingga Zulfikar, Zeta; Cupu, Dedi Rosa Putra; Nazaruddin, Nazaruddin
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

Contact between the roller element with the inner or outer ring produces enormous pressure which can cause friction between the surfaces of the two objects. The continuous friction will result in wear and using lubricant between the two contacting surfaces becomes an important role to reduce friction as well as wear. There are several types of lubrication, one of them is elastohydrodinamic lubrication. In this study the numerical method of Finite Difference Method is used to solve Reynolds equation in order to investigate the effect of basic parameters such as initial load, surface speed and radius of the cylindrical roller bearing. A single contact of cylinder roller and inner ring is modeled as a contact between a solid cylinder and flat plate. The influence of temperature, non-newtonian fluids and dynamic loads are ignored in this research. Central-difference scheme in the Finite Element Method is used to solve the Reynolds equation for calculating the elastohydrodynamic pressure that occurs on a contact. The results obtained show that there is an influence of the initial load, velocity and also the radius of the pressure generated at the time of contact between the solid cylindrical bearing element and the thickness of the film layer formed between the two surfaces of the object. The greater load given will increase the maximum pressure, but reduce the minimum film thickness. While when given variations in velocity, increasing the minimum value of film thickness and reduce the maximum pressure. Likewise what happens when variations in radius are given, increasing the minimum value of film thickness and reducing the value of maximum pressure. Keywords: Elastohydrodynamic Lubrication, Film Thickness, Elastohydrodynamic Pressure, Finite Element Method

Page 254 of 315 | Total Record : 3145

 252   253   254   255   256 

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