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
 244   245   246   247   248 
Analisis Kemiringan Lereng Daerah Aliran Sungai Kampar Dengan Titik Keluaran Waduk Plta Koto Panjang Lesmana, Dedi; Fauzi, Manyuk; Sujatmoko, Bambang
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

The upstream watershed has a very important role in flowing water to the downstream area. Upstream watersheds located in highlands usually have very steep slopes with slopes of more than 15%. This causes the potential for erosion in the upstream to be large. The potential for erosion will be even greater because the steep slope causes a large amount of transport energy for water. Gravity will be greater with the slope of the slope. The purpose of this study is to classify and create a slope map of the Koto Panjang hydropower reservoir watershed. The method used in this research was data analysis with geographic information system software. The level of slope in the Kampar watershed varied greatly from flat (0-8%), gentle (8-15%), steep (15-25%), steep (25-45%), and very steep (>45%). Meanwhile, the Koto Panjang PLTA Reservoir watershed had a slightly steep slope (15-25%) covering an area of 104.465 km2, steep (25-45%) covering an area of 484.893 km2, and very steep (>45%) covering an area of 2747.813 km2. Based on the slope level in the Koto Panjang PLTA Reservoir watershed, the LS value in the watershed is 8.907.Keywords : watershed, erosion, slope
Simulasi Peningkatan Lebar Tegangan Input Buck-Boost Converter Dengan Perancangan Coupled Inductor Tivani M. Christien DS; Dian Yayan Sukma
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 paper describes the design and simulation of a dc-dc buck-boost converter using the buck-boost coupled inductor topology to equalize the dc input voltage source to the load voltage with a wide voltage conversion range. The buck-boost converter coupled inductor system with a closed circuit that is controlled by PI control, voltage mode control, and current mode control on the PWM (Pulse Width Modulation). This circuit is simulated using the PSIM software, and the outputs are analyzed then compared to a buck-boost converter that does not use a coupled inductor. It is indicated that the buck-boost converter without coupled inductor has an input voltage width in the range of 4-21 Volt result in the output voltage of 14 Volt, while a converter using a coupled inductor has an input voltage width in the range of 3-64 Volt, and it generates the steady output voltage of 14 Volt. Key Words: buck and boost converter, coupled inductor, PWM, voltage-mode control, current-mode control, PI control.
Pengaruh Konsentrasi Graphene Nanosheets Dan Foam Agent Terhadap Kuat Tekan Bata Ringan Cellular Lightweight Concrete (CLC) Eva Rantika; Amun 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

Cellular lightweight concrete (CLC) is a material obtained by inserting air bubbles into the lightweight concrete mixture, where the air granules are able to maintain the bubble structure during the curing process. The use of lightweight concretes may reduce the construction costs and make the working process becomes easier. This study aims to make CLC with the addition of graphene nanosheets as an additive to improve the compressive strength and thermal resistance of CLC. This research begain by making the graphene, preparing the sand as fine aggregate, foaming agent, cement, and distilled water then ended with making the light concretes by adding grapheme (1%, 3% and 5%) with the ratio of the foaming agent: water of (1:20, 1:30, 1:40). The morphological results showed an increase in the cavity that was formed with the addition of the foaming agent : water. The results obtained at 5% graphene concentration in the ratio of the foaming agent : water (1:30) were for compressive strength of 2.5 MPa at a density of 1196 grams with the results of porosity and water absorption of 10.431% and 9.119%. The thermal resistance test at 700 ° C reached a compressive strength of 0.5 Mpa.Keywords : Additive, CLC (Cellular Lightweight Concrete), Foaming Agent, Graphene
Perancangan Galeri Fotografi Dengan Pendekatan Arsitektur Metafora Nazamri Nazamri; Gun Faisal; Pedia Aldy
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 photography gallery is a place to accommodate the work, a place to hold exhibitions, entertainment and recreation. But in the city of Pekanbaru did not have a container to realize the activity. The development of photography continues to improve based on the community and photography enthusiasts, so it is a gallery of photography in Pekanbaru. Photographic gallery with a metaphorical architectural approach which has the formation of the camera as a form of building. Meanwhile, the basic concept of building ideas is "Light of Camera", which is lighting inside the camera, where the movement of light in the camera will be applied to the building room.Keywords: Architecture Metafora, Photography, Pekanbaru.
Uji Kinerja Turbin Angin Sumbu Horizontal Bilah Inverse Taper Berdiameter 2,6 M Di Gedung C Fakultas Teknik Universitas Riau Husaini, Fachri; Martin, Awaludin
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

Electrical energy requirements which continues increase and diminishing fossil fuels resulting research in the field of renewable wind energy developing rapidly, one of the renewable energies is wind turbines. This study aims to determine the performance of the horizontal axis wind turbine by using the type of blade inverse taper NACA 4412 with a composite fiber empty palm fruit bunch combined with fiberglass. The wind turbine is placed on top of the building C Faculty of Engineering, Riau University at height ±15 m. The output power is measured using a 300 Watt generator. The data take form of wind speed, air temperature, voltage and shaft rotation speed. Data collection was carried out using arduino uno which was recorded in the data logger for 1 day, namely on 15 and 16 August 2020. After testing the wind turbine, the highest wind speed data was obtained, namely on August 16 with a wind speed of 5.12 m/s at 12:28:13 WIB. The maximum shaft rotation obtained from the maximum wind speed is 9.4 Rpm with a Cp of 0.08 and a TSR of 0.1. Keyword : wind turbine, wind speed, inverse taper.
Analisis Ekonomis Penggunaan Variable Speed Drive Sebagai Pengendali Motor Induksi Tiga Phasa Tegar Arieyasha Fikri; Azriyenni Azriyenni
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

PT RAPP is one of the companies that uses a three-phase induction motor in production where the motor is used as a pump, pulp dryer, or conveyor. Some districts in PT RAPP have used VSDs as controllers for three-phase induction motors, but some are still using the DOL system. This study aims to compare the energy use of a three-phase induction motor when it is connected to Direct On-Line (DOL) and when it is controlled by a Variable Speed Drive (VSD). This study also aims to analyze from an economic aspect, namely the total energy tariff per year and the calculation of the Pay Back Period (PBP) or the refund period. This research was conducted by collecting motor work data for a month. The research was conducted by observing the research subject, then collecting data on motor performance. The research data were taken from two districts, namely Fiberline 1 and Fiberline 2, the data that has been obtained will be calculated. There are 3 calculations in this research, namely calculation of total electrical energy, calculation of electricity rates and calculation of PBP. The results of this calculation will produce a large amount of electric energy when a three-phase induction motor is connected to the DOL and when VSD is controlled, savings in electricity rates when using a VSD and a period of return on investment in VSD installation. The results of data analysis on Fiberline 1 show the amount of energy saved when the motor uses a VSD of 802847.665 kWh with a large energy tariff savings of IDR 9,602,764,579,345 and a payback period of 7 months. In Fiberline 2, it shows the amount of energy saved when the motor uses a VSD of 694543.902 kWh with a large energy saving of Rp. 8,307,356,266,554 and a payback period of 13 months. Keyword: DOL, Energy, Induction Motor, Payback Period, VSD
Analisis Timbulan Sampah Domestik Di Kota Bangkinang Riki Ablan Yusandre; Jecky Asmura; Aryo Sasmita
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

Bangkinang city is the capital of Kampar Regency which consists of urban areas, Bangkinang city and Bangkinang Districts. It has an area of 224.65 Km2 and the population of the two districts is 77,339 inhabitants. The population continues to grow, but waste management facilities such as Temporary Shelter (TPS) provided by the government are not evenly distributed and have not fully served the community in the city of Bangkinang. The population growth of Bangkinang city reaches 2.43% annually. With a population of 77,339 people, the city of Bangkinang has the potential to produce large amounts of waste, which if not managed properly can cause a decrease in the quality and aesthetics of the environment. Therefore it is necessary to calculate the generation of waste as a basis for waste management in the city of Bangkinang. The calculation of waste generation that is carried out refers to SNI 19-3964-1995, the unit of large city waste generation = 2 - 2.5 L / person / day, or = 0.4 - 0.5 kg / person / day, the unit of waste generation medium / small city = 1.5 - 2 L / person / day, or = 0.3 - 0.4 kg / person / day. Based on the results of the calculation of waste generation, Bangkinang city is included in the category of small cities, it is found that the waste generation is 154,7 m3 / day. Key words: Bangkinang City, Waste Generation, Domestic Waste.
Prarancangan Pabrik Furfural Dari Tandan Kosong Sawit Kapasitas 6000 Ton/Tahun Dengan Disain Alat Utama Reaktor Fluidized Bed Ahmad Pratama; Said Zul Amraini
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

Furfural needs in the country is increasing along with the development of industries such as paint industry, oil, pharmaceuticals, plastics and also polymer industry. Indonesia's furfural needs to date still rely on imports from other countries. Fufural is commonly produced using agricultural waste containing pentosan, such as rice husks, corn cobs, wood, hemp, cane pulp, empty fruit bunches and other sources containing fiber. Indonesia is a resource-rich country that has the potential to produce raw materials for fufural production, one of which is empty fruit bunches with a pentosan content of 25.90%. The amount of waste of empty fruit bunches throughout Indonesia in 2004 has reached 18.2 million tons. The process of making furfural with Supra yield process takes place in a solid-gas phase batch reactor, at a temperature of 206°C and a pressure of 18 atm where the hemicellulose in biomass is converted through 2 reaction stages, hydrolysis and dehydration. The conversion process with a reaction time of 15-20 minutes and using sulfuric acid catalysts as much as 3% of the feed mass. The design result was obtained reactor with a height of 26.05 m and diameter of 6.25 m and equipped with internal cyclone as separator between solid particles attached to the gas product. The evaluation of the factory design economic analysis shows that the factory is eligible to be established with the factory's Return On Invesment (ROI) of 26.65%, the Break Event Point (BEP) is 35%, the Internal Rate of Return (IRR) is 22.74%, and the factory Payback Period (PBP) is 2.75 years.  Keywords: Batch Reactor, Furfural, Pentosan, Suprayield
Tanjungpinang Creative Hub Dengan Pendekatan Arsitektur Ekspresionis Syilvia Ovtariyani Putri; Pedia Aldy; Mira Dharma Susilawaty
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

Tanjungpinang Creative Hub is a central that can accommodate creative activities in the development of network, organization and business of creative industries. Tanjungpinang as the capital of Riau Islands Province is potentially to the development of creative economy due to the technological advancement in creative industry growth and tourism, both in the field of art products, culture and local wisdom. So many creative actors and micro enterprises emerge active in the creative industry sectors. Creative hub planning becomes the solution of the problem that serves as an educational, commercial and recreational facilities and there are supporting facilities for user activities. Tanjungpinang Creative Hub facilitates the development of seven creative industry subsectors namely performing arts, fashion, culinary, crafts, photography, animation and graphic design. This method uses expressionist architectural approaches to provide an expressive and imaginative image of the building when anyone sees it as well as being able to present building functions as a place of shaping creativity and enriching self-expression. Implementation of expressionist architecture by applying the characteristics and values to the design of the building through three elements namely façade, interior, floor plan and building mass. The concept used is Unity in Creativity that expresses the meaning of a universal form of creative into a harmonious unity, based on the dimension of creativity that can be manifested through the character, emotion and innovation into architectural form. keywords : Tanjungpinang, Creative Hub, Expressionist Architecture, Unity in Creativity
Pengaruh Konsentrasi H2so4 Terhadap Laju Korosi Dan Efisiensi Menggunakan Ekstrak Daun Salam (Syzgium Polyantha L) Paian Harianja; Komalasari Komalasari; Desi Heltina
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

Corrosion cause a material has a limited lifespan,where teh material that was estimated for a long-term use turns out to had a shorter lifespan than its avreange lifespan. One of the prevention of the corrosion was to used corrosion inhibitors that made using organic material was Bay leaf (Syzgium Polyantha L) This research beginss with the manufacture of the bay leaf extract using maceration method for 6 days. The calculation method used in this study was a method of measured weight loss with inhibitor concentrations of bay leaf extract (2 gr/L), variations time were (24, 36, 48 and 60 hours) and corrosion media concentration H2SO4 ( 0.5 and 1 M). The highest inhibition efficiency in the addition of inhibitors 2 gr/L with corrosion media concentration H2SO4 0.5 M of time 60 hour was 70.370% Keywords: aluminium, bay leaf extract, corrosion inhibitor, corrosion rate

Page 246 of 315 | Total Record : 3145

 244   245   246   247   248 

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