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
 177   178   179   180   181 
Aquatic Park Dengan Pendekatan Arsitektur Rumah Godang Kuantan Singingi Safika Fitri; Wahyu Hidayat; Gun Faisal
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Swimsuit in Indonesia has been known for a long time by the wider community. Kuantan Singingi Regency is a regency that runs along the Kuantan river. In Kuantan Singingi coaching forswimming athletes has been done by the government. This guidance was made due to the absence of a swimming sport facility in Kuantan Singingi with a competition standard. The lack of a standard pool sports venue is the background of the design Aquatic Park. The design of Aquatic Park consider the function of the building to the location in the Sport Center area Kuantan Singingi. This design takes the typology of Rumah Kuantan Singingi Godang which is one of Traditional Houses Kuantan Singingi to display the characteristics of Kuantan Singingi form of architecture of Godang House. The concept used in this design is movement. The results of the concept of design transformation applied to the mass form of buildings and building facades.Keywords: Aquatic Park, Godang House, Recreation, Swimming.
Analisis Numerik Kuat Lentur Elemen Balok T Curved Tile Semi Pracetak Dengan Variasi Mutu Beton Cast In Place Rian Fajri Ramadanas; Ismeddiyanto Ismeddiyanto; Reni Suryanita
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

T beam elements curved tile semi precast is a combination concrete precast with concrete cast in place, which aims to improve the efficiency construction of reinforced concrete structures. Quality concrete cast in place, can be influenced by various factors such as human error, weather and others. Thus the need to be studied further how the influence of variations in the quality of concrete cast in place. The purpose of this study is to analyze the results of the flexural strength T beam semi precast elements, especially against the load-deflection relationship, the moment-curvature, and the pattern of cracks caused. The study used curved tile T beam semi precast element with dimension of 60 cm width, height 18 cm, and a length of 300 cm. Quality of precast concrete is 22 MPa and the quality variations of cast in place concrete were 15 MPa, 19 MPa, 20 MPa, 22 MPa and 25 MPa. The axial load of T beam Model increased, starting from zero up to fail. Base on the finite element analysis software improved, the received axial load greater the 20,51 kN, 21,00 kN, 23,47 kN, 23,67 kN and 23,80 kN. For the moment curvature analysis results, with increases in the quality of concrete, moment that occurs is also increasing the 20,51 kNm, 21,00 kNm, 23,47 kNm, 23,67 kNm and 23,80 kNm. Cracks that occurred on all elements of T semi precast beams are cracked flexural, where the bending moment occurred on the area's largest. Therefore this study can be an additional reference to community and alternative in the manufacture of semi precast T beam element, as well as understanding of the use of computer applications in the identification of mechanical properties of concrete.Keywords: Cast In Place Concrete, Curved tile, Finite Element Analysis Software, Flexural Strength, Concrete Precast, T Beam
Deteksi Kebocoran Dan Sumbatan Pada Jaringan Pipa Mengunakan Sinyal Suara Riedho Tilma Satria; Feblil Huda
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

This research describes the results obtained from experimental studies into the use of acoustic signals to detect leaks and blockages in pipelines. The piping system is an important feature in the industrial world, because it has an effective and efficient transportation function used for delivery such as drinking water, petrochemicals and other liquids. Prevention of damage to either leakage or blockage is very important because it can reduce the number of losses both the economy, the natural environment, even loss of life. The research method used is detection by using acoustic signal. Acoustic signal method is used because it is very sensitive to discontinuities in pipes that can detect problems quickly and precisely which has the advantage of cheaper cost. Acoustic signals are given for leakage, blockage, and joint damage to water and waterless conditions of different sizes and positions. The acoustic signal data is processed by fast Fourier transform and Wavelet Transform methods. From the test results obtained that the amount of damage given is directly proportional to the resulting amplitude. The conclusion is that this is an effective method for the detection of leaks and plugs in simple and enhanced pipes to monitor from more complex pipelines.Keywords : Sound Signal, Leakage, Blockage, Fast Fourier Transform, Wavelet Transform.
Produksi Etanol Dari Jus Pelepah Sawit Menggunakan Bakteri Kultur Tercampur Rumen Sapi Anysha Lankari Halim; David Andrio; Said Zul Amraini
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

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

Abstract

Oil Palm Fronds are the largest source of biomass waste in the palm oil industry. Oil Palm Frond Juice has high simple sugar content with a total COD content of 63,000 mg / L potentially as a medium for bioethanol fermentation. Ethanol fermentation with the use of pure bacterial culture requires aseptic conditions so it is difficult to maintain causing ineffective ethanol production. One solution is to use mixed bacterial cultures. This research aimed to study of the use of mixed cultures on bioethanol production, COD removal, TAV formation and VSS growth using cattle rumen. In this study the process of seeding was carried out for 5 days in a Circulating Bed Reactor (CBR) with working volume of 25 liters by adding glucose (C6H12O6) at the beginning of the process with comparison of the ratio of biomass and substrate 80: 20 (% v/v). The fermentation process of oil palm frond juice is carried out in batch using an erlenmeyer with a working volume of 150 ml containing substrate and biomass at a ratio of 70: 30 (% v/v) under conditions of room temperature. pH controlled at 5 which is natural pH of the oil palm frond juice. Bioethanol concentration was analyzed using High Performance Liquid Chromatography (HPLC). The results of the main study showed the efficiency of total COD removal, dissolved COD removal and VFA production respectively at 32.35%; 32.32% and 39.13%, with the VSS growth rate of 1444.44 mg/L. The final bioethanol concentration was 498.07 mg/L which is very low compared to using pure culture. These resulst indicate there is a need for ways to increase ethanol production using mixed cultures.Keywords: Palm frond juice, ethanol production, anaerobic fermentation, mixed culture bacteria.
Pengaruh Nisbah Dan Suhu Pencampuran Selulosa Dan Pati Terhadap Sifat Dan Morfologi Bioplastik Berbahan Dasar Pati Umbi Talas Wira Bima Stevent Sembiring; Irdoni HS; Bahruddin Bahruddin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The use of plastic in large quantities impact on environment pollution as the effect of the plastic cesspool accumulation which cannot be decomposed naturally (non-biodegradable). Research bioplastics (biodegradable plastic) based starch done to find alternative to reduce the consumption of conventional plastics. But, the starch has a weakness on mechanical properties. The purpose of this study was to knowing the characteristics of taro starch and cellulose from banana stems, knowing the effect of water ratio, temperature and composition of the cellulose filler on mechanical properties and morphology of the bioplastics products. Manufacture of bioplastics made by the casting method, ie mixing taro tuber starch, glycerol, and cellulose. Bioplastics produced do some analysis, which includes the analysis of the chemical composition, tensile strength (tensile strenght), elongation (elongation at break), water uptake, biodegradation, SEM (Scanning Electron Microscopy) and analyzed using Response Surface Methodology (RSM). The most effected factor was significant to all the responds was the composition cellulose filler which followed by the temperature and water ratio. The best composition is bioplastic with filler cellulose 14,999%b/b, temperature 75,775oC and water rasio 20v/b which is tensile strenght was 6,906 MPa, elongation 10,906%, water uptake 28,491% and biodegradable 54,143%.Keyword : cellulose, glycerol, starch, tensile strength, and water uptake
Analisis Kebutuhan Ruang Terbuka Hijau Dalam Menyerap Emisi Karbondioksida Dari Kegiatan Transportasi Di Kecamatan Sukajadi Kota Pekanbaru Agustriani, Rina; Reza, Muhammad; Sasmita, Aryo
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

The green open space is one of an effort in order to handling of the increasing the greenhouse gas emission, because green open space has an ability to absorbing the CO2 emission. The purpose of this research is to find out the potential of absorption capacity of CO2 by the pbulic’s green open space and to analyze the level of absoption of CO2 by green open space from transportation activity. The method in this research is calculate the value of CO2 emissions and counting the trees whcih has diameters more than 20 centimeter. The sufficiency of green open space was analyze and then compared the absorbing power of CO2 by trees with number of CO2 emissions that produced. Sukajadi district is produced the CO2 emissions from transportation which is high enough as much as 51.212.465 ton CO2/year. While the ability of CO2 absorption by the public’s green open space in Sukajadi district only 6.456,68 ton CO2/year. The public’s green open space in Sukajadi district thet viewed of absorbing CO2 emissions of transportation is still not enough with percentage is only about 0,0126%.Keywords : Green Open Space, CO2 emissions, and Greenhouse Gas
Tinjauan Penerapan Sistem Manajemen Keselamatan Dan Kesehatan Kerja (Smk3) (Studi Kasus : Proyek Pembangunan Gedung Menara BRI Pekanbaru) Orilian, Anestia; Iriana, Rian Tri Komara; Sebayang, Mardani
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Pekanbaru is one of the cities that has high number level development in Indonesia. To support Banking business facility in Pekanbaru, Bank Rakyat Indonesia (BRI) built BRI tower which is located in Sudirman Street Tangkerang Tengah, Pekanbaru. BRI tower project hired 171 workers and uses heavy equipments so it would risk safety and comfort of the workers. To decrease the number of work accidents and to apply ‘zero accident’ so it’s needed to apply safety and health management system in this project. The purpose this research is to observe safety and health management system in this project. The researcher used qualitative method, analysis unvariate, and descriptive quantitative method. The questionnaire has been spread through some respondents, 149 construction workers and 22 project staffs. The result of assessment in applying safety and health management system based on PP No.50 Tahun 2012 showed that it reaches 60% and it belongs to Good rate. The result of audit safety and health management system BRI tower Pekanbaru project reaches 100% and it belongs to Excellent rate. According to analysis of safety and health equipments cost calculation, it shows Rp 721.485.925,00 or 0,5% from the total of project contract value and it’s already fulfilling PT Pembangunan Perumahan rules which requires safety and health procurement budget worth 0,5%-1% for ≤ Rp 300 billions project value. Some factors that obstruct safety and health management system applying are workers psychological and environmental factors.Keywords: Safety and Health management system, BRI Tower, PP No.50 tahun 2012
Mitigasi Bencana Kebakaran Lahan Gambut Berdasarkan Metode Network Analysis Berbasis GIS (Studi Kasus: Pulau Bengkalis) Rizki Sahputra; Sigit Sutikno; Ari Sandhyavitri
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Peatland and forest fires disasters have become an annual issue that hit the area of Bengkalis Island and has caused many losses. A good disaster mitigation management is required to overcome this disaster. This study aims to identify and to analyze the number of optimum post needs that can service all areas in Bengkalis Island with a quick response time. In Bengkalis Island, there are 2 existing fire stations. Based on the service area analysis result, both stations only can service 50,05% area of Bengkalis Island. This study simulated the impact of covered service area by utilization more fire station. The simulation was utilized with 1,2,3 and 4 additional stations. Percentage of covered area with 1,2,3 and 4 additional fire station are 62,19% ; 71,70% ; 70,51% and 69,51% respectively. Covered area with quickest response time is increased simultaneously with every additional of fire stations. Keywords: Peatland Fires, Disaster Mitigation Management, Network Analysis, Service Area, Fire Station
Optimasi Temperatur Cooling Water Pada 25ºC Dan Hot Water Pada 60 ºC Dengan Variasi Waktu Siklus Pada Sistem 2 Bed Adsorption Chiller Krist Mamre Saragih; Awaludin Martin
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Adsorption chiller has one of the solution related to enviromental issues by conventional refrigeration. This paper presented the optimization temperature cooling water and hot water from sistem adsorption chiller. Performance of adsorption chiller influenced by temperature hot water inlet and temperature cooling water inlet. To optimization temperature hot water inlet, temperature cooling water stay at 30ºC and to optimization temperature cooling water inlet, temperature hot water stay at 65ºC. According to this research temperature optimal hot water inlet 60ºC in time cycle 700s with COP 0.36% and cooling power 0.72kW but temperature optimal cooling water inlet 25ºC in time cycle 700s with COP 0.31% and cooling power 0.73kW.Keyword : Adsorption chiller, Cooling water, Hot water, COP, Cooling power
Ball Milling Process Of Hydroxyapatite From Sea Shells By Synthesis Method With Low Temperature Hydrothermal Rahmad Rasyidin; Ahmad Fadli; Silvia Reni Renti
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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

Abstract

Ball milling of hydroxyapatite from sea shells has been successfully done by the low temperature hydrothermal method. The purpose of research is to determine the effect of time and number of ball mill in ball mill process to character of hydroxyapatite properties. Firstly,sea shells were calcined at 1000°C for 24 hours for producing CaO. And then 55.63 grams of (NH4)2HPO4was dissolved in 600 mL of distilled water and then 45.91 grams of CaO added into the solution until formed a slurry. Subsequently, the slurry was dried in an oven at 120°C for 15 hours. The drued slurry was then milled trough a ball milling process with variations of time of 1, 2, and 4 hours and variations in number of 10, 20, and 30 grinding balls then calcined temperature 900°C holding time of 2 hours. The results showed that the smallest diameter of the crystal at the ball mill process for 2 hours using 20 grinding balls is 67 nm. While the surface area obtained will increase if the resulting smaller size of the crystal.Keywords: Ball mill, Hydroxyapatite, Hydrothermal, Sea Shells and Crystal Diameter

Page 179 of 315 | Total Record : 3145

 177   178   179   180   181 

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