Now showing items 1-20 of 755

    • Accelerometer-Based Head Movement Detection System Design as a Sleep Detection Tool 

      Siregar, Yulianta; Sani, Farhan Khalil (International Conference on Information Technology, Computer, and Electrical Engineering, 2022)
      The frequent occurrence of accidents while driving is caused by several factors, such as technical factors and human error factors. The human error factor often occurs in vehicle accidents, and it is because the driver ...
    • Accurate Phase to Phase Fault Resistance Calculation Using Two Terminal Data 

      Idris, Muhd Hafizi Bin; Hardi, Surya; Hasan, Mohd Zamri; Yatim, Yazhar; Hasan, Syafruddin (IEEE, 2014)
      Faults can occurred at the transmission line due to lightning strike, broken conductor, cross arm or tower falls, danger tree, crane or animal encroachment, polluted insulator etc. Each type of fault will represents a ...
    • Activated Carbon Preparation from Bagasse and Banana Stem at Various Impregnation Ratio 

      Misran, E; Sarah, M; Irvan, Irvan; Dina, S F; Harahap, S A A; Nazar, A (Journal of Physics: Conference Series, 2020)
      The effects of impregnation ratio on characteristics of activated carbon from bagasse and banana stem were analyzed. The precursors were impregnated using phosphoric acid (H3PO4) solution as the activator at a ratio of the ...
    • Activated Carbon Preparation from Bagasse and Banana Stem at Various Impregnation Ratio 

      Misran, E; Sarah, Maya; Irvan, Irvan; Dina, S F; Harahap, S A A; Nazar, A (Journal of Physics: Conference Series, 2020)
      The effects of impregnation ratio on characteristics of activated carbon from bagasse and banana stem were analyzed. The precursors were impregnated using phosphoric acid (H3PO4) solution as the activator at a ratio of ...
    • Activated Carbon Production From Bagasse and Banana Stem at Various Times of Carbonization 

      Misran, E; Maulina, S; Dina, S F; Nazar, A; Harahap, S A (IOP Conf. Series: Materials Science and Engineering, 2018)
      The utilization of bagasse and banana stem as activated carbon precursors has been conducted. In this study, the dried samples were impregnated using phosphoric acid (H3PO4) solution as the activator at a ratio of sample ...
    • Activating Lipase Enzyme in the Candlenut Seed to Produce Fatty Acid Directly from Candlenut Seed 

      Tambun, R; Tambun, J O A; Tarigan, I A A; Sidabutar, D H (Universitas Sumatera Utara, 2020)
      Candlenut seed contains a minimum of 60% of oil. Candlenut oil in the seeds can be used to turn it into oleochemicals such as paint, varnish, soap, medicines, cosmetics, and fuel. This study aims to produce fatty acids ...
    • Active Versus Passive Cooling Systems in Increasing Solar Panel Output 

      Harahap, Raja; Suherman, Suherman (Procedia Environmental Science, Engineering and Management, 2021)
      Energy availability will remain an issue whole years as energy is the primary human need to live in this planet. Fossil energy is no longer the primary choice as its availability decreases every year, although it dominates ...
    • Adaptasi Bangunan terhadap Kenyamanan Termal dan Dampaknya terhadap Kualitas Udara di dalam Ruang Kelas, sebuah Penelitian Awal 

      Talarosha, Basaria (TAU International Conference, 2015)
      Thermal comfort is likely affecting students’ academic performance. The uncomfortable indoor environment would decrease students’ academic performance. In general, most of the school buildings in Medan use package unit ...
    • Adsorbing on Dissolved Copper Metal by Charcoal Rambutan Rods 

      Tarigan, K S; Haryanto, B; Tambun, R; Manik, K; Lumbangaol, A K (Universitas Sumatera Utara, 2020)
      Charcoal was produced from rambutan rods. The charcoal was then used as adsorbent to adsorb copper ion 70 ppm dissolved in solution. The charcoal rambutan has ability to adsorb the copper ion (%R) 62,068 or about 43,456 ...
    • Adsorption Interaction Model of Adsorbents White Sand with Heavy Metals Cadmium (Cd 2+) Naturally 

      Haryanto, B; Saragih, FT; Sinaga, W K; Turmuzi, M; Misran, E (IOP Conf. Series: Materials Science and Engineering, 2020)
      This study aimed to analyze the adsorption ability of white sand in the metal ions adsorb cadmium (Cd2+) with a concentration of 70 ppm to a solution with a pH of 4.5. The white sand is used is 40 mesh. This research ...
    • Adsorption Kinetic in Fixed-Bed Column Using Purolite Resin A400 Resin Impregnated with Cu Metal 

      Fatimah, Fatimah; Selviani, Chairani; Turmuzi, Muhammad (AIP Conference Proceedings, 2018)
      Adsorption method through ion exchange process using resin as the adsorbent is used to remove nitrate contaminant from the water body. The occurrence of nitrate ion adsorption on resin surface is a negative ion ...
    • Air Temperature and CO2 Concentration in Naturally Ventilated Classrooms in Hot and Humid Tropical Climate 

      Talarosha, Basaria; Satwiko, Prasasto; Aulia, Dwira Nirfalini (IOP Conference Series: Earth and Environmental Science, 2020)
      Students at the public primary schools in Medan city, Indonesia, complete 90% of their learning activities in the same classroom, which, in order to save energy, utilises natural ventilation to obtain thermal comfort and ...
    • The Ambiguous Identity of Lumban Bulbul 

      Siagian, Morida; Sitorus, Rudolf (IOP Publishing - IOP Conference Series: Materials Science and Engineering, 2020)
      Lumban Bulbul Beach, located on the bank of Lake Toba, the North part of Balige City has transformed rapidly in the last 5 years from qualitative to quantitative values. The space of village for daily life with the ...
    • Amplitude Range Data Validation in Internet of Things (IoT) Sensor 

      Candra, R A; Suherman, Suherman; Ilham, D N (IOP Conference Series: Earth and Environmental Science, 2020)
      Internet of Things (IoT) has been widely used for collecting data wirelessly for many applications. Data is collected periodically through TCP/IP network to a collecting server for further usage. Data clean-up and ...
    • An Analysis Air Traffic Prediction During a Pandemic 

      Nasution, Darmeli; Mawengkang, Herman; Fahmi, Fahmi; Zarlis, Muhammad (IEEE Xplore, 2022)
      Air transportation during the covid-19 pandemic experienced a very drastic decline. The decrease in the number of passengers was caused by national and international restrictions. The troublesome administration makes ...
    • Analysis and Experimental Usage of CFRP Wrap Type on Flexural Strength of Concrete Beam 

      Tarigan, Johannes; Pakpahan, Andrew; Surbakti, Medis; Nursyamsi, Nursyamsi (MATEC Web of Conferences, 2019)
      Today, reinforced concrete structures are commonly used in buildings because the price cheaper than steel structures. However, many concrete structures are damaged. There are several ways to overcome this problem, and one ...
    • Analysis and Optimization of Inter Band Handover Parameter by layering in LTE networks 

      Pinem, Maksum; Syafrudin, Nur; Zulfin, Muhammad (IEEE - 2019 The 3rd International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2019)
      The tendency of users who are always moving but still want to get bandwidth and high access speed access makes service providers should implement a good transfer system, so that users do not experience mobility ...
    • Analysis and Optimization of Inter Band Handover Parameter by Layering in LTE Networks 

      Pinem, Maksum; Syafrudin, Nur; Zulfin, Muhammad (International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2019)
      The tendency of users who are always moving but still want to get bandwidth and high access speed access makes service providers should implement a good transfer system, so that users do not experience mobility ...
    • Analysis of Biobriquette from Rice Husk for Biomass Power Plants: A Review 

      Siregar, Yulianta; Alfian, Alfian; Suherman, Suherman (International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2020)
      The long-term use of fossil energy has expected to be exhausted if there is no breakthrough for renewable energy. Energy source future will become extinct along with the increasing energy needs and population, which ...
    • Analysis of Biobriquette from Rice Husk for Biomass Power Plants: A Review 

      Siregar, Yulianta; Alfian, Alfian; Suherman, Suherman (International Conference on Electrical, Telecommunication and Computer Engineering (ELTICOM), 2020)
      The long-term use of fossil energy has expected to be exhausted if there is no breakthrough for renewable energy. Energy source future will become extinct along with the increasing energy needs and population, which ...