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
 273   274   275   276   277 
Pengaruh Variasi Komposisi Aditif PEG Terhadap Kinerja Membran CA Al-Fitri, Mahriandhanie Chika; Pinem, Jhon Armedi; HS, Irdoni
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 defined as a selective and semipermeable thin layer between two phases, namely the feed phase and the permeate phase. The purpose of this study is to make cellulose acetate from pineapple leaves, make cellulose acetate membrane with variations in the composition of PEG additives, and study the effect of PEG additive composition on the characteristics of cellulose acetate membranes produced. The methodology in this research is isolation of cellulose from pineapple leaves, synthesis of cellulose acetate from pineapple leaf fibers, synthesis of cellulose acetate membrane, pre-treatment of pulp and paper industry wastewater, and characterization of cellulose acetate membrane. The variation in the composition of the additives Polyethylene Glycol (PEG) used is 5, 10, 15 % w/w. Pulp and paper industrial wastewater treatment using cellulose acetate membrane is carried out with a variation of 2 bar operating pressure. The highest value of flux was obtained on membranes with a composition of PEG 15% w/w that is 39.922 L/m2.hour. The highest value of the rejection of COD, BOD5 and TSS parameters were obtained from the membrane with a PEG composition of 5% w/w, that are 67.13%; 76.45% and 74.42%. Keywords: membrane, polyethylene glycol (PEG), cellulose acetate
Prarancangan Pabrik Ammonia Dari Hidrokarbon Dan Udara Menggunakan Proses Kbr Dengan Disain Alat Utama High Temperature Shift Converter (R-104) Fitri, Deyana Annisya; Fermi, Muhammad Iwan
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

Ammonia is raw material for fertilizer industry, refrigerant and textile. The need for ammonia is increasing due the development of the agricultural industry which uses ammonia as the main raw material. Ammonia is produced by reacting hydrogen from natural gas and nitrogen from air. This plant is designed to produce 350.000 ton ammonia per year, operated continuously for 330 days/year and 24 hours/day. The main of equipment design in this paper is high temperature shift converter (HTSC). In HTSC, carbon monoxide is converted into carbon dioxide with water and Fe-Cu catalyst for easier removal CO2 in the CO2 removal system. This reactor is operated at temperature 644oK and pressure 30 bar. Type of this rector is fixed bed multitube with 420 tube and cooling water in shell side. Fixed capital investment of this plant is Rp 1.237.828.356.614, total production cost Rp 1.441.431.713.805 and annual net profit Rp 988.881.802.274 From economical analysis, pay back period of this plant is 1,0102 year, return of investment 79,9% and break even point 20%. Keyword: Ammonia, Economic Analysis, Natural Gas, Reactor, Shift Converter
Pengaruh Air Gambut Terhadap Karakteristik Marshall Pada Campuran Asphalt Concrete - Binder Course (AC-BC) Yang Menggunakan Abu Tandan Sawit Sebagai Bahan Pengisi (Filler) Khairil Badry; Alfian Malik; Yosi Alwinda
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

The use of fillers is useful for filling empty voids in the asphalt mixture for highway pavements so that the use of fillers greatly affects the strength of its stability. Materials that can be used as fillers are those that have pozzolanic content and contain high levels of silica. One of the materials that has this content is palm bunch ash. The water content of peat has a high acidity, so it can damage a pavement when there is inundation for a long time. The purpose of this study was to determine the effect of peat water on the characteristics of marshall in AC-BC mixture which uses oil palm bunch ash as a filler. This study used a percentage of filler variations in the form of 0%, 2%, 4% and 6% which were immersed for 0.5 hours, 3 hours, 6 hours, 12 hours and 24 hours using peat water. This study follows the Standard Specification of Bina Marga 2018. In this study, the KAO value obtained the highest stability value and 4% filler variation at 0.5 hour immersion time of 906.53 kg and the lowest stability value of 0% filler variation at 24 hours immersion time of 505.33 kg. then for the IKS value that meets the standard requirements of the Standard Specification of Bina Marga 2018 only at 3 hours of immersion time for all percentages of filler variations where the maximum requirement for reduction in the stability value is 90% from the original stability value. Keywords: Peat water, AC – BC, filler, Palm Bunch Ash
Peramalan Jumlah Penerimaan Siswa Baru Menggunakan Metode Exponential Smoothing Kelvin Rainey Salim; Noveri Lysbetti Marpaung
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 need for rapid technological development, especially in the field of education. Many aspects are worth considering in the world of education, one of which is prediction, which is considered capable of overcoming one of the problems in the world of education, namely fluctuations in new students. This fluctuation will be related to school policies later. The Single Exponential Smoothing method is used to determine predictions of student acceptance in the next academic year period. Exponential Smoothing method is a pretty good forecasting method for long and medium term forecasting. This method is also able to handle students' irregular fluctuations. The data to be processed is the number of student admissions for the period 1999/2000 to 2003/2004 The results obtained from this study are the results of the analysis of the Single Exponential Method to obtain information about the prediction of new student admissions and the level of accuracy with MAPE for the next school year for 4 years. Forecasting results can be influenced by several factors such as construction of facilities and others. Forecasting results using the Single Exponential Smoothing Method can predict the number of new students in the Academic Year 2003/2004 is 117 people, whereas the number of students accepted reach 125 people. It means that MAPE of forecasting with Exponential Smoothing Method can reach 6.4%. This is the smallest percentage of error (MAPE) in this research. The smallest number of students accepted in the Academic Year 2000/2001, where the number of students accepted was 47 people and students were predicted as many as 26 people. MAPE produced this year is 45%. Keywords: New Student Data, Forecasting Data, Single Exponential Smoothing Method, Mean Absolute Percentage Error (MAPE)
Simulasi Model Fisik Untuk Analisis Karakteristik Gelombang Pecah Pada Pantai Bergambut Milka Novita Manalu; Sigit Sutikno; Rinaldi Rinaldi
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

The coastal area of Bengkalis Regency, especially the one directly opposite the Malaka Strait has the characteristic of sea waves that are strong enough so that it can suffer quite severe damage such as abrasion and sedimentation. Abrasion and sedimentation on the coast is influenced by the characteristic wave conditions. The purpose of this research is to make a beach modeling to determine the characteristics of breaking waves and to compare the breaking waves on peat, clay and sandy beaches. The method used in this research is wave simulation by making peat beach modeling with scale variations of 2,3,4,5 and 6 on the wave generator. This simulation uses laboratory simulation. The results showed that the height of the breaking waves on a clay beach is 0.017 to 0.034 m, the depth of breaking waves is 0.003 to 0.033 m and the types of breaking waves that occurred were spilling and plunging. The height of the breaking waves of sand material is 0.012 to 0.033 m, the depth of breaking waves is 0.010 to 0.031 m and the types of breaking waves that occurred were spilling and plunging. The height of the breaking waves of the peat material is 0.008 to 0.025 m, the depth of breaking waves is 0.008 to 0.025 m and the types of breaking waves that occurred were spilling and plunging. Keywords : peat, coast, breaking wave
Perancangan Protokol Pegasis Untuk Aplikasi Sistem Absensi Sidik Jari Rabil Kurniawan; Feri Candra
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

WSN applications have been widely used in recent years. In a very complex wsn application, a routing protocol is mandatory for a WSN network system. Among the communication protocols that have been developed to date, hierarchical protocols are the most widely used type of routing. PEGASIS is one of the many types of protocols that apply the hierarchcal protocol principle. In this study, the PEGASIS protocol will be implemented on the Arduino platform for the fingerprint attendance system, where NRF24L01 is used as the radio transceiver module. Testing of QoS in the form of packet loss, transfer speed, delay, power consumption and memory usage are indicators of the feasibility of this system. After testing, it was found that the delivery packet loss was 0%, the transfer speed ranged from 4.22 - 12.92 Kbps, the resulting delay was 2.92 - 5.54 ms. The power consumption of 23 devices a day is 463.49 Joules. From the results that have been obtained, the system developed is feasible to be implemented in a real way.   Keywords: WSN, PEGASIS, QoS
Analisis Debit Banjir Sungai Daik Dengan Berbagai Kala Ulang Rahman Wahidin Miatullah; Manyuk Fauzi; Rinaldi Rinaldi
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

Daik River in Lingga Regency is one of the flood prone rivers. To overcome this, information about the capacity that can be accommodated by the Daik River is needed. Therefore, the researcher simulated the water surface profile intended to provide information about the flood discharge into the Daik river. Theflood discharge plans were calculated with a return period of 2 years, 5 years, 10 years, 20 years, 25 years, 50 years, 100 years by using Hesper method. The simulation results show that in most parts of the DaikRiver at the time of the return of 2 years there has been a flood inundation with an flood discharge of 159,3909 m3/s, while the cross-section of Daik River capacity of 57,53 m3/s.Keywords: daik river, flood discharge plans, HEC-RAS.
Pembangunan Sistem Monitoring Kualitas Udara Dan Gas Dalam Ruangan Dengan Platform Iot Dan Notifikasi Via Android Imam Fadli; Ery Safrianti
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

Internet of Things (IoT) is a concept to exchange data through the internet with objects that can be controlled remotely. Air is a mixture of gases found in the layers that surround the earth. The component with the most varied such as H20 vapor and carbon dioxide (CO2). Air pollution is defined as the entry of one or more contaminants / pollutants such as dust, smoke, odor, gas, and vapor into the atmosphere in a certain amount and certain characteristics and at a certain time which can endanger the lives of humans, animals, plants, and interfere with comfort in life . This system was designed indoor air and gas quality monitoring on android notifications. The tools consisted of Arduino Mega, MQ2, MQ-7, ZH03A, PZEM 004T, and it was used to detect monitoring air and gas qualityof the air by sending notifications to user with the android smarthphone. The thingspeak.com is used to view monitoring data from sensors. The test results show that the time needed to be able to send android notifications is about 1-3 seconds, while the time needed to send and receive data to thingspeak.com are about 30 seconds. These time can be affected by the internet connection. Sending measurement data by arduino devices is also very good with an average delay less than 300ms. Keywords: Monitoring, air, gas, Iot, Notificaton
Prarancangan Pabrik Etilen Glikol Dari Etilen Oksida Dengan Proses Dow Meteor Irma Damayanti; Sunarno Sunarno
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

Ethylene glycol is a hygroscopic liquid with low volatility. Ethylene glycol is colorless, odorless, has a low viscosity. Ethylene glycol is used as a polyester resin for fibers, a film-making agent, an antifreeze and coolant agent, a heat exchange agent, a waterbased formula, and an unsaturated polyester. The purpose of establishing an ethylene glycol factory is expected to be able to support efforts to save the country's foreign exchange through import substitution of ethylene glycol, and increase employment. Ethylene glycol factory with a capacity of 200,000 tons / year in Batam, Riau Islands. The ethylene glycol production process is carried out through the Dow METEOR process which consists of 4 stages, namely the standard discussion stage, the ethylene glycol formation stage, the ethylene glycol concentration stage, and the product separation stage. The main design is the CSTR reactor, which is used to react ethylene oxide with water to form ethylene glycol with the by-products of diethylene glycol and triethylene glycol. Based on the results of the economic feasibility analysis of the factory, the ethylene glycol plant is feasible to establish with a Payback Period (PBB) obtained of 2 years, an IRR of 22.738%, a Percent Return on Investment (ROI) is 30.59%, and a Break Event Point (BEP) is obtained by 60%. Keywords: Ethylene glycol, dow meteor, cstr reactor
Pengaruh Penambahan Komposisi Hidroksiapatit Terhadap Pengurangan Massa Membran Jaringan Terpadu Untuk Aplikasi Biomaterial Geo Rayfandy; Jhon Armedi Pinem; Irdoni HS
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

Guided Tissue Regeneration (GTR) is one of the techniques used in periodontitis patients to treat tooth decay which provides an opportunity for the growth of new teeth. The purpose of this study is the synthesis of GTR membrans from chitosan, hydroxyapatite, and PEG and study the effect of variations in the composition of hydroxyapatite respectively 2, 4, and 6 gr. The membran is made from a mixture of chitosan, PEG and hydroxyapatite solution which is stirred until homogeneous. The results of the mixture are printed with a glass plate and characterized by membran biodegradation. The effect of adding hydroxyapatite composition to the GTR membran is increasing membran biodegradation. Keywords: chitosan, GTR, hydroxyapatite, membran, PEG.

Page 275 of 315 | Total Record : 3145

 273   274   275   276   277 

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