Articles
3,145 Documents
<![CDATA[Sistem Pendeteksi Gelombang Otak Berbasis Electroencephalogram (EEG) Pada Penderita Alzheimer ]]>
<![CDATA[Kurnia Alfikri]]>;
<![CDATA[Yusnita Rahayu]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[The brain controls our thoughts, memory and speech, movement of the arms and legs, and the function of many organs within our body. If someone has a healthy brain, then will encourage physical health. In the other way around, if the person brain is in an unhealthy condition, then that is the cause of all problems in the body. Some doctors use a device called an electroencephalogram (EEG) to diagnose the brain in humans. Electroencephalogram (EEG) is a medical test used to measure the electrical activity of the brain. EEG is done by placing electrodes on the scalp. EEG is often also referred to as a brain wave test. The EEG procedure is not painful and can be done without having to shave hair. EEG will help diagnose a number of health conditions such as Alzheimer's disease. The method used is to measure human brain waves using the designed EEG device. EEG signal output using MATLAB software. This study aims to design an EEG system to diagnose Alzheimer's disease and display the results of EEG signal readings in MATLAB. Keywords: EEG, MATLAB, Alzheimer, Brain.]]>
<![CDATA[Pengaruh Penambahan Konsentrasi Saccaromyces Cerevisiae Terhadap Produksi Bioetanol Dari Limbah Biomassa Pelepah Sawit ]]>
<![CDATA[Maya Ratna Sari]]>;
<![CDATA[David Andrio]]>;
<![CDATA[Sri Rezeki Muria]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Oil palm frond juice (OPFJ) has the potential as a promising bioethanol forming substrate because of the simple high sugar composition with a total COD content of 36.364 g / L. In this study, the microorganisms used were S. cerevisiae, the best fungi for bioethanol fermentation This study aims to determine the effect of inoculum concentration of S. cerevisae on the fermentation of the oil palm frond juice (OPFJ) for the process of bioethanol formation, allowance for COD, formation for Volatile Suspended Solid (VSS).The study was conducted using 250 ml erlenmeyer with a working volume of 150 ml with a ratio of S.cerevisae as much as 10%; 20%; 30% and 40% (v/v) with a OPFJ substrate content; 90%; 80%: 70% and 60% (v/v) at 100 rpm for 72 hours. Based on the results of the study, the highest efficiency of COD dissolved as a 50%, respectively. VSS growth is 168 m/L/hour with efficiency of growth is 41% through Reactor R1 (S.cerevisiae: Substrate = 30:70). It produces the highest bioethanol formation with the 10 % addition of S. cerevisiae (v/v) of 25,42 mg/L with the efficiency of bioethanol formation is 83% with stirring 100 rpm at 48 hours.Keywords : Fermentation, Bioethanol, Juice Oil Palm Fronds, Saccaromyces cerevisiae]]>
<![CDATA[Pembuatan Asam Asetat Dari Sari Kulit Nenas (Ananas Comosus) Menggunakan Acetobacter Aceti Dengan Variasi Volume Inokulum Dan Waktu Fermentasi ]]>
<![CDATA[Multi Handriyani]]>;
<![CDATA[Chairul Chairul]]>;
<![CDATA[Cory Dian Alfarisi]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 1 Januari s/d Juni 2020 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Acetic acid is an organic chemical compound that is colorless and has a sharp odor. Pineapple skin can be used as a raw material for making acetic acid by utilizing microorganisms. Microorganisms used to process pineapple skin extract into bioethanol are Saccharomyces cerevisiae and the microorganism used to process bioethanol into acetic acid is Acetobacter aceti. The purpose of this study is to convert sugar in pineapple skin juice through the fermentation process to acetic acid and determine the effect of variations inoculum volume and fermentation time on the resulting acetic acid. This research phase consisted of raw material preparation and inoculum making, fermentation and analysis. The variation of bioethanol fermentation time is 1, 3 and 5 days, while the variation of the inoculum used in this study is 10%; 13%; and 16%. Fermentation results are taken after 1, 3, 5, 7 and 9 days. Optimum fermentation results are bioethanol 5% (v / v) or 39.47 g / L and Yield 53.94% and acetic acid concentration 37.79 g / L and Yield 91.80%. This maximum concentration was obtained on the 9th day of acetic acid fermentation in 13% inoculum of Acetobacter aceti with bioethanol substrate with a fermentation time of 5 days. Keywords : Acetic acid, bioethanol, pineapple skin juice, fermentation, conversion]]>
<![CDATA[Perancangan Jaringan Di Kota Pekanbaru Dengan Metode Algoritma Monte Carlo (Studi Kasus: LTE Multi-RAT UMTS) ]]>
<![CDATA[Siti Maryam]]>;
<![CDATA[Linna Oktaviana Sari]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 2 Juli s/d Desember 2019 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Pekanbaru still has poor and unstable network technology obtained from survey results using G-NetTrack Lite Software in 12 Districts, so the needs of network service users are not yet fully covered. Therefore, a motode is needed to solve the problems occurred. By using telecommunications that has high speed and it can serve the needs of service users. Technology that is capable fulfill to these needs and has high speed is Long Term Evolution (LTE). LTE has data transfer speed up to 50 Mbps for uplinks and 100 Mbps for downlinks. In this research network design using Multi-RAT technology is performed, Multi-RAT is a technology that can access more than one network. A in one the Multi-RAT technology can improve signal quality and optimize the network while working simultaneously. Furthermore, to validate the success of users who can connect to the LTE network designed, a Monte Carlo algorithm simulation is needed. Monte Carlo algorithm simulation is a probabilistic simulation solution of a problem given based on a randomization process. In the simulation test, as a result 96.5% of users are connected to the network with 3.082.47 Mbps Throughput value obtained from the Monte Carlo algorithm simulation that was carried out in Pekanbaru. It can be concluded that the design of UMTS Multi-RAT LTE network can be done because the average value of users and throughput connected with a high percentage is obtained.Keywords: LTE, Multi-RAT, UMTS, Monte Carlo Algorithm Simulation]]>
<![CDATA[Pemanfaatan Pasir Pulau Bungin Kabupaten Kuantan Singingi Sebagai Agregat Halus Pada Campuran Laston Lapis Antar (AC-BC) ]]>
<![CDATA[Cici Amelia Hilman]]>;
<![CDATA[Agus Ika Putra]]>;
<![CDATA[Sri Djuniati]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Sand of Pulau Bungin is natural sand derived from the Batang Kuantan river, Kuantan Singingi Regency. The existence of natural sand availability makes the progress of the construction of Kuantan Singingi Regency because easily obtained, and more economical no need to bring in sand material from other areas and not have to go through the process of solving stone by stone crusher. Based on the specifications of the Bina Marga 2010, the use of natural sand is to mix asphalt concrete (AC) shall not exceed 15% of the total weight of a mixture of aggregates. Therefore we need to know the efficiency use of natural sand in the mix asphalt concrete (AC) for optimum use. This research aims to find out how the levels of optimum asphalt (KAO) and knowing the characteristics of Marshall does meet the general specifications Bina Marga 2010 Revision 3. The variation of fine aggregate natural sand used in this research is 0%, 5%, 10%, 15% and 20% of the total weight of a mixture of aggregates. The addition of natural sand in asphalt concrete base course (AC-BC) causes the value of the levels of optimum asphalt (OBC) decreased. On the mixture of asphalt concrete base course (AC-BC) the addition on variation 10% of the sand obtained the value of the levels of optimum asphalt (KAO) is 6.20% and the maximum stability value is 1440.19 kg. Without considering the limitations on use of sand nature as set forth in the general specifications of the Bina Marga 2010 Revision 3, the addition of natural sand that still might be used in the asphalt concrete base course (AC-BC) until 20%.Keywords: natural Sand Pulau Bungin, asphalt concrete layer between the (AC-BC), a general specification Bina Marga 2010 Revision 3, characteristics of Marshall.]]>
<![CDATA[Pengaruh Perubahan Dimensi Dan Jenis Material Terhadap Umur Worm Screw Press Type AP-17 Pada PTPN V Sei. Garo ]]>
<![CDATA[Apri Setiawan]]>;
<![CDATA[Syafri Syafri]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[PTPN V Sei. Garo uses the recommended worm screw for about 1000 hours of work, but because of the often unexpected things sometimes the age of worm screw is always lower. To anticipate these problems then modified the material and dimensions are required. The purpose of this study is to determine the effect of material changes and dimensions on the age of worm screw. Then do a simulation using Autodesk Inventor to know the maximum and maximum deflection. After the calculation manually, based on data worm screw type AP-17 screw life worms obtained about 777 hours of work (± 1 month). The modifications were made for the addition of age: modified thick screw and pitch distance was obtained age of 1388 working hours and 920 hours of work, after the simulation using Autodesk Inventor was obtained maximum voltage 3.1 of Mpa and 6.3 Mpa with maximum deflection of 0.01 mm. However, by increasing the thickness and spacing of the screw pitch resulted in reduced screw press capacity, consequently impacting the capacity of the plant. There were many disadvantages from the modification of the dimensions, therefore the modification of matrial from AISI 1020 to AISI 1080 was obtained the screw worm life age of about 2190 hours of work, after simulation using Autodesk Inventor was obtained maximum voltage of 6.4 MPa with maximum deflection worth of 0. 01 mm.Key words: Screw Worm Age, Modified Dimension, Modified Matrial, Autodesk Inventor Simulation]]>
<![CDATA[Perancangan Freshwater Aquarium Park Di Indragiri Hulu Dengan Pendekatan Arsitektur Hemat Energi ]]>
<![CDATA[Ardy Fhadly]]>;
<![CDATA[Wahyu Hidayat]]>;
<![CDATA[Yohannes Firzal]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 4, No 1 (2017): Wisuda Februari Tahun 2017 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Freshwater Aquarium Park in Indragiri Hulu accommodate different types of aquatic fauna and ecosystem (natural) that provides an overview of the life of freshwater without having to dive can be used as a means of recreation, education and conservation. Indragiri Hulu as a region with a thousand rivers, has the potential of fish and aquatic plants, which is not yet fully developed and there are no facilities to accommodate its Indragiri aquatic ecosystems. This design apply the principle of energy-efficient architecture with the concept of multi expression unity of design. The application of this concept in the design of Freshwater Aquarium Park that analogy as root produce different shapes on each side of the building, penzoningan which facilitate inter-space function that applies the principles of energy saving by optimizing the air, light, and water. The integration between the air system of artificial and natural, system of artificial and natural light and the synergy between passive and active methods. This building with filtration maximize water conservation and ecosystem modeling.Keywords: Energy Saving, Multi Expression, Freshwater Aquarium Park, Indragiri Hulu]]>
<![CDATA[Rancang Bangun Aerator Menggunakan Penggerak Motor Satu Fasa Dan Sistem Otomatisasi Berbasis Smart Relay ]]>
<![CDATA[Abdul Gafar Arsaf]]>;
<![CDATA[Iswadi Hasyim Rosma]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5, No 1 (2018): Wisuda April Tahun 2018 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Oxigen in the water is obtained from 2 processes specifically the first is, photosynthesis by water plants and the second is aeration which included in the diffusion process. Aerator is a device that serves to produce oxygen through the diffusion process for the needs of living creatures in the water. Aerators themselves have several types, those are ; gravity aerator (gravity influence), surface aerator (surface), diffusier aerator (mixing), turbine aerator (windmill), and combination. The aerators which designed here are aerator type of turbine (turbine aerator) similar to the aerator used in the research area generally. The purpose in the making of an aerator with this automatic system is to simplify the management and also to reduce the operational costs of the ponds. Aerator is made using 2 pieces of waterwheel with each pin having the same 6 blades with a mill used in ponds at the research site. As the basis of the automation system, the aerator is a smart relay programmed with 2 input which are the light sensor and the sensor temperature parameters in the programming obtained from the results of research on dissolved oxygen levels in the water. From the results of the testing, when dissolved oxygen levels are relatively high in the range of 30mg/L light intensity > 100,000 lux and for temperature < 350 C. Then the results of the data retrieval is made into the input parameters in the programming. The results of the device testing shows that the performance which is as expected. Aerator can work well in increasing oxygen from 8mg/L – 14.4mg/L in 45 minutes and the controller work as programmed when dissolved oxygen level below standard with indication of light intensity < 40 lux and temperature >350 C.Keyword : Aerator, Dissolve Oxygen, Smart Relay]]>
<![CDATA[Pengaruh Temperatur Terhadap Kinetika Reaksi Pembentukan Hidroksiapatit (HAp) Dari Precipitated Calcium Carbonate (PCC) Cangkang Telur Itik Melalui Proses Presipitasi ]]>
<![CDATA[Hadrian Yonas Sebastian Napitupulu]]>;
<![CDATA[Yelmida Azis]]>;
<![CDATA[Komalasari Komalasari]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[Hydroxyapatite (Ca10(PO4)6(OH)2) is a calcium phosphate compound that has been widely used as a bone implant material due to its chemical composition is identical with natural bone. The aim of this research is to synthesized, characterized and studied the kinetics of hydroxyapatite synthesis reaction using PCC (Precipitated Calcium Carbonate) of duck egg shell by precipitation method. In this research the samples were taken every 10 minutes as much as 10 mL for 1 hour to determined the reaction kinetic. Then stirred for 24 hours with temperature variation (300C, 400C; 500C; 600C) and aged for 24 hours. The analysis of Ca concentration in filtrate was detected by using complexometri method. The synthesized hydroxyapatite was characterized by XRD and obtained a hexagonal crystalline structure with crystal size between 20 - 37 nm. The reactions kinetics of synthesized hydroxyapatite follows the pseudo first order equation with the value of reaction rate constant (k) is 0,0543 min-1; 0.0759 minutes-1; 0.1146 minutes-1; and 0.1597 minutes-1.Keywords: hydroxyapatite, reaction kinetics, PCC, duck egg shell, precipitation]]>
<![CDATA[Perancangan Otomasisasi Pengisian Baterai Dengan Surber Energi Surya ]]>
<![CDATA[Hanggun Syahadad]]>;
<![CDATA[Azriyenni Azhari Zakri]]>
<![CDATA[ Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 5 (2018): Edisi 2 Juli s/d Desember 2018 ]]>
Publisher : <![CDATA[Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains ]]>
Show Abstract
|
Download Original
|
Original Source
|
Check in Google Scholar
<![CDATA[A charger controller is required in the process of charging batteries that use solar energy through solar panels. The battery charging process can use more than one battery, in this study using two batteries. For this reason, it is necessary to design a battery charging automation device with a solar energy source to facilitate the battery charging process. The charging method is run alternately on two batteries that will be charged based on the preset low voltage sensor. The initial voltage value on the battery is used to calculate the battery's State of Charge (SOC) capacity. In this study, we will observe the filling process of two batteries of 12 Volt Lead Acid types, having a battery capacity of 3.5 Ah and 7.2 Ah with a source of 100 Wp solar panels. An Arduino microcontrollers is invoked as control systems for reading voltage and current sensors as detectors during battery charging. The test results obtained that the first battery is filled with 12.3 Volt for battery voltage at 69.4% SOC reading, then 12.82 Volt second battery with 84.9% SOC reader. The duration of the first battery charging is for 90 minutes with an average current value of 0.7 Ampere at 100% battery of SOC. The second battery starts charging after the battery is full when the relay has moved automatically to charge the second battery. The duration of second battery is charging for 60 minutes with an average current of 0.17 Ampere at 94% SOC. All measurement results, during the test are run directly recorded by the data logger and stored on the SD Card.Keywords: Arduino, Control Charge, Data Logger, Current Sensor, Voltage Sensor]]>
