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Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains
Published by Universitas Riau
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Core Subject : Engineering,
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Articles 3,145 Documents
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Kaji Eksperimental Jumlah Blade Turbin Propeler Terhadap Unjuk Kerja Hybrid Wind Turbine Franklin Ishak; Iwan Kurniawan
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

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Abstract

Hybrid turbine is a combination of two different types of turbines which are still in one axis. This research used a propeller turbine with a 2 meters diameter of an S833 blade profile and combined with a 0.5 meters diameter of venturi turbine (Energy Ball Wind Turbine) with a total of 5 blades. This venturi turbine is placed in front of the propeller turbine. This research varies the number of propeller turbine blades, that are 3.4 and 5 blades. The first test is data retrieval on propeller turbines, then the retrieval of data is carried out on hybrid turbines and the two tests can be compared to the result of performance. From this research, it can be seen that hybrid turbines with 5 propeller blades produce greater generator power than other variations of 1.16 watts at 5 m/s wind speed. However, the energy wind turbine ball produces the largest average increase in generator power that is 28.55% by using 5 propeller blades. Keywords : Propeller turbine, hybrid turbine, energy ball wind turbine
Resor Air Terjun Pati Soni Di Kabupaten Kuantan Singingi Dengan Pendekatan Ekologi Arsitektur Ayu Lastriani Putri; Wahyu Hidayat; Gun Faisal
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

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Abstract

Pati Soni Waterfall located in the sub-district of Kuantan Mudik, Cengar village is one of the destination of the waterfall can be made as a natural tourism commodities of Kuantan Singingi. Lack of supporting facilities provided from both the government and the private sector make the Pati Soni Waterfalls could not attract tourists to visit and enjoy the natural tourism objects. Therefore there is a need for supporting facilities such as leisure facilities, shelter facilities and resort for tourists who can turn on the back and can be the attraction of tourists to come and enjoy the natural tourism objects Pati Soni Waterfalls. Methods in this design is to apply the principles of ecology architecture according to the theory of Heinz Frick (1998) into the building. The implementation of the principle of ecological building according to Heinz Frick (1998) into the Pati Soni waterfall Resort at Regency of Kuantan Singingi. The concept is transformation from nepenthes plant examination that applied to the building. In addition to the shape, orientation of Nepenthes plants leads to the river also applied to revival. Arrangement design of the Pati Soni Waterfall resort recreation area in Kuantan Singingi Regency with Ecological Architecture Approach produces a pattern of structuring the landscape and circulation spaces outside which follow the lines and contours of the pattern, so that the resulting view make recreational areas can attract visitors to come.Key word: Resort, Pati Soni, recreation facility, ecological architecture.
Kinetika Adsorpsi Ion Logam Cu+2 Menggunakan Tricalcium Phosphate Sebagai Adsorben Siti Chotijah; Ahmad Fadli; Komalasari Komalasari
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

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Abstract

The methods used for reducing the level of heavy metals have been developed. One of the methods used for reducing the level of Cu metal wastes in waters is the adsorption process. The purpose of this research is to observe the effects of the initial Cu+2 metal ion concentration and the mass of the adsorbent on the capability of tricalcium phosphate (TCP) to adsorb, and also to establish a suitable model of the adsorption kinetics. Add a 500 mL solution of Cu (3 mg/L, 9 mg/L, and 15 mg/L) to tricalcium phosphate (TCP) (1 gram, 2 gram, and 3 gram) in a beaker glass, stirred with a speed of 300 rpm at 30oC. Take the solution of Cu2+ at 0; 30; 1; 1.5; 2; 2.5; 3; and 3.5 minutes, and then analyze the solution of dicentrifuge Cu and Cu by using the Atomic Absorption Spectroscopy (AAS). The research shows that the smaller the concentration of the adsorbent and the bigger the mass of the adsorbent, the bigger the capability of the Cu+2 metal ion to adsorb. The research also obtains the value of the kinetics, with a concentration of 3 mg/L, of 1 gram adsorbent (4.3721 g/mg.min), 2 gram adsorbent (5.4432 g/mg.min), and 3 gram adsorbent (5.4925 g/mg.min). With a concentration of 9 mg/L, 1 gram adsorbent (0.9926 g/mg.min), 2 gram adsorbent (1.1154 g/mg.min), and 3 gram adsorbent (1.4401 g/mg.min). With a concentration of 15 mg/L, 1 gram adsorbent (0.1390 g/mg.min), 2 gram adsorbent (0.2490 g/mg.min), and 3 gram adsorbent (0.4805 g/mg.min). The minimum value of the adsorption kinetics is obtained at 1 gram adsorbent with a concentration of 15 mg/L (0,1390 g/mg.min) and the maximum value of adsorption kinetics constants is obtained at 3 gram adsorbent with a concentration of 3 mg/L (5.4925 g/mg.min).Keyword : kinetic, adsorption, cuprum, tricalciumphosphate (TCP) .
Sintesis Kitosan Dari Limbah Cangkang Kepiting Dengan Variasi Konsentrasi Naoh Dan Kecepatan Pengadukan Aisyah Rani; Drastinawati Drastinawati; Yusnimar Yusnimar
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

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Abstract

One parameter that determines the quality of chitosan is the value of deacetylation degree. The degree of deacetylation is influenced by the concentration of NaOH and the stirring speed used in the deacetylation process. The combination of NaOH concentration and the right stirring speed will produce chitosan with a high degree of deacetylation and good quality. The purpose of this study was to determine the effect of using NaOH concentration and the speed of stirring on the characteristics of chitosan produced from crab shells. Crab shells was deproteinated with 3.5% NaOH at 65ºC for 2 hours, the result of deproteination process is crude chitin. Crude chitin was demineralized with 1 N HCl at 30ºC for 1 hour, the result of the demineralization process is chitin. Chitin was deacetylated with NaOH concentration of 40%, 60% and 80%, the deacetylation process took place at a temperature of 120ºC for 3 hours with a stirring speed of 100 rpm, 150 rpm and 200 rpm, the deacetylation process was carried out with two replications. Chitosan obtained was tested by Fourier Transform Infra-Red Spectrophotometer (FTIR). The obtained deacetylation degree of chitosan produced ranged from 70.88% - 85.39%. The chitosan yield produced ranged from 64.5% - 72.3%. The levels of chitosan ash produced ranged from 1.45% - 2%, while the water content of chitosan produced ranged from 1.45% - 2%.Keywords : crab shell, deacetylation. chitosan, FTIR, deacetylation degree
Pengaruh Konsentrasi Dan Rasio Berat Few Layer Graphene (FLG) Terhadap Sifat Mekanis Aspal Beton Jenis Asphalt Treated Base (ATB) Muhammad Sugandi; Amun Amri; Syelvia Putri Utami; Muhammad Shalahuddin
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

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Abstract

Developing in highway is needed to produce better mechanical properties. This study aims to produce concrete asphalt by adding FLG (Few-Layer Graphene) from graphite, and then comparing the contribution of graphene with concentration and weight ratio of FLG to concrete asphalt as variations. Making asphalt concrete-FLG composite was started from making FLG with concentrations of 10, and 20 mg/ml using the turbulence-assisted shear exfoliation (TASE) method. Then, FLG was added to the bitumen with these variations and mixing it at 150 ᴼC and stirred for 10 minutes for homogenize. The homogenized asphalt bitumen was then mixed with the aggregates that have been prepared using a filter analyzer. The united bitumen and aggregates were then compacted using Marshall Automatic Compactor (MAC) with the number of collisions as much as 112 times and soaked in a water bath for 24 hours at 25 ᴼC. After 24 hours, the Marshall object test was weighed and soaked again for 30 minutes at 60 ᴼC before Marshall’s test. The results showed that for bitumen asphalt, the best penetration was exhibited by sample synthesized using FLG with concentrations of 20 mg/ml and 9% wt, namely 48.1 dmm. For Marshall’s test, the best flow value was also exhibited by the sample with FLG concentrations of 20 mg/ml and 9% wt, namely 4.3 mm. FTIR testing showed that there was an interaction between the FLG and bitumen in the double bond region and single bond stretch.Keywords : asphalt, few-layer graphene, flow, penetrations, softening point, stability
Analisa Perbandingan Pengaruh Penggunaan Protokol Secure Soket Layer (SSL) Dan Protokol Point To Point Protocol (PTTP) Terhadap Quality Of Service (QoS) Pada Jaringan Vitual Private Network (VPN) Lamhot Raden Sitorus; Linna Oktaviana Sari
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

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Abstract

Security Protocols Protocol Point-to-Point (PPTP) and Secure Socket Layer (SSL) are VPN security protocols that used to enhance the security of a network. The use of these protocols effect on performance network or Quality of Service (QoS). The QoS is measured using delay parameters, the jitter, throughput, and packet loss. Network testing scenario uses the topology bus. The results of this research is to compare the performance of each VPN protocols tested i.e. PPTP and SSL in a way of measuring the QoS performance without using the Protocol as a basis for comparing its effects byusing VPN protocols.Keywords : Virtual Private Network, PPTP, SSL, Quality of Services
Sintesa Surfaktan Ramah Lingkungan Metil Ester Sulfonat Dari Palm Oil Methyl Ester Dengan Variasi Kecepatan Pengadukan Dan Suhu Reaksi Rahmad Agung Yanuardhi; Nirwana Nirwana; Irdoni HS
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 1 Januari s/d Juni 2018
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Abstract

Waste generated from surfactant LABS (Linear Alkylbenzene sulphonate) can be toxic to aquatic organisms, causing damage to ecosystems and groundwater that may havean impact on human life. Surfactants are surface active agent, which works to lower the surface tension of a liquid, active nature is derived from the dual nature of the molecule. Surfactants are molecules that have polar groups that like water(hydrophilic) and non-polar groups are like oil (lipophilic). Methyl Ester Sulfonate (MES) is one type of anionic surfactant which has advantages in terms of detergency, resistant to hardness, are renewable and environmentally friendly. Methyl EsterSulfonate produced by the process of sulfonation between Palm Oil Methyl Ester (POME) and sulfonating agent Sodium metabisulphite (Na2S2O5) with a catalyst of aluminum oxide (Al2O3). This research aims to create a methyl ester sulfonate withstirring speed variation and reaction temperature. Sulfonation process using Palm Oil Methyl Ester mole ratio of 1: 1.5 and sulfonating compounds with sodium metabisulfite variation stirring speed of 400, 450, 500 rpm and temperature variations of 80, 100,120 0C, with a reaction time of 4.5 hours. The results were obtained product category decrease in surface tension of water is a stirring speed of 400 rpm and a temperature of80 0C, with a decrease of 21 dyne / cm. for category decrease interfacial tension obtained the best product on the stirring speed of 450 rpm and a temperature of 100 0C, with a decrease of 5.80 dyne / cmKeyword : Anionic Surfactants, Methyl Ester, Methyl Ester Sulfonate, Sulfonation, Surfactant.
Efektifitas Pemanfaatan Sumur Resapan Untuk Mereduksi Limpasan Permukaan Elsa Rina S; Bambang Sujatmoko; Manyuk Fauzi
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

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The amount of runoff in Pekanbaru City makes the function of drainage as a reservoir of excess water cannot function optimally. One of those affected is Vila Tani Housing. The purpose of this study was to compare the effect of form and percentage of use of infiltration wells on the effectiveness of infiltration wells in reducing runoff. The study was conducted with hydrological analysis and infiltration testing. Mathematical calculations were performed to determine flood discharge, concentration time, discharge after the use of infiltration wells, as well as effectiveness for each form of infiltration wells. Flood discharge is obtained at 0.0221 m3 / sec. Forms of infiltration wells that have the greatest effectiveness are wells that are high in water in infiltration wells with the high absorption capacity of wells and the soil surface around infiltration wells that are not water resistant can reduce flood discharge by 53.885% to 0.0102 m3 / sec.Keywords : Runoff, infiltration well, drainage, concentration time
Rancang Bangun Jaringan Hotspot Menggunakan Manajemen Bandwidth Dan RTRW Net Dengan Metode Simple Queue Di Kelurahan Tanah Datar Kecamatan Pekanbaru Kota Settian Dwi Cahaya; Noveri Lysbetti M
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

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Abstract

Research on Design of Hotspot Network Using Bandwidth Management has been done in Indonesia, but there is still a problem such as bandwidth monopoly. In this study the writer a design a Hotspot Network System Using Simple Queue Method to avoid monopoly in bandwidth. This research was conducted in RT 02 Kelurahan Tanah Datar, Pekanbaru City District by utilizing the writer’s personal Wifi. In this study research use 10 client as a subject to test the design with total bandwidth 30 Mbps, where its bandwidth divide in to 5 Mbps for admin and 25 Mbps for clients. The results obtained from this study 10 clients successfully connected to Wifi and there is no monopoly of bandwidth between clients Keyword : Simple Queue, Wifi, Client
Prediksi Fluktuasi Muka Air Tanah Untuk Pengembangan Komoditi Lahan Gambut Berwawasan Lingkungan Melani Humairoh; Sigit Sutikno; Rinaldi Rinaldi
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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In Siak regency, there are 10,000 hectares OF TORA land (Land object of agrarian reform) which is a peat area and 92% of them are deep peat. An area of 2,000 Ha of the total number of TORA land is at HGU 07. The Local Government of Siak Regency will manage the peatland productively in economic terms but does not damage the peat ecosystem. Based on PP RI number 57 year 2016 on protection and management of peat Ecosystem, the peat ecosystem with cultivation function is declared to be damaged when water level in peat land more than 0.4 meters below the peat surface at the linking point. The purpose of this research is to predict the fluctuation of groundwater in consideration to support the efforts to optimize the development of environmental commodities peatland in Siak Regency. The effort to maintain water level above 0.4 m is so that PP RI No 11 Tahun 2009, peat is kept in wet conditions for carbon emissions and the threat of land and forest fires due to drying of land can be reduced. Ground water advance fluctuations are predicted using linear regression methods. The results showed that the result of the calculation obtained the value of efficiency Of Determination In the highest dwrain analysis of 3 months with a data length of 0.5777. The prediction of ground water advance fluctuations in May – December means that water depth is not in accordance with government regulations that set a water level height of less than 0.4 m below ground level. Alternative commodity can live with government regulation if planted in surplus month, namely February to April.Keywords : hydrology, water balance, peat land, regression analysis, water level

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