Abstract this paper concern about design ACOS with PLC system. The supply of electricity will move from the main generator to the battery when the main generator lost one phase, and the power supply will switch to the emergency generator when the voltage in accordance with the emergency generator working voltage AC electrical equipment on board is 380VAC. Electricity supply shall not move directly from the emergency generator to the main generator but to the battery first to prevent damage to the AC electrical equipment on board. Transport time for the system for 30 seconds ACOS equipment in accordance with the ICC and SOLAS regulations which require the transfer of under 45 seconds. ACOS equipment can be used in real conditions on the ship because it has phase failure, under voltage and over voltage protection and a relay as an indication for the transfer of command power supply automatically.

Abstract electric propulsion is the ship system using propulsion motor to replace performance of main engine. The application of diesel engine as propulsion system have some problems and weaknesses such as diesel engine unability to operate when submersible vessel is operating under sea. To overcome that problems in submersible vessel, alternative solution of ship propulsion is required. DC Motor can be used as this alternative solution. Submersible vessel use electric propulsion system with DC Motor because DC Motor has advantages of easy rotation setting and does not cause noise when submersible vessel is diving. This bachelor thesis will study the application of DC Motor as an electric propulsion system on submersible vessel with length 59,57 m in series and parallel circuit by simulation using MATLAB software. The simulation data obtained are rotation and torque of DC Motor. From these simulation, it can be concluded that parallel circuit rotation is greater than series circuit rotation. It caused the greater speed and lower power in parallel circuit.

This paper describes the application of computer control to a pilot scale (15 cm diameter) Reciprocating Plate Solvent Extraction Column. The system under investigation was kerosene dispersed in water without mass transfer between the phases. The control objective was the regulation and set point tracking of the holdup of the dispersed phase. Dynamic tests showed that the column was a non‐minimum phase, dead‐time process with asymmetric, non‐linear gains and time constants. Fixed parameter controllers of increasing complexity; PID, Dahlin algorithm, and minimum variance, were compared to an adaptive controller, the self tuning regulator. These controllers were applied in feedback and combined feedback‐feedforward configurations.

Latar belakang: Fosfolipase A 2 (PLA 2) terlibat dalam proses inflamasi dan kematian sel pada stroke, dan inhibisinya dapat mendorong terjadinya neuroregenerasi. Tujuan penelitian ini adalah mempelajari pengaruh pemberian ekstrak akar Acalypha indica Linn terhadap viabilitas relatif sel dan kadar enzim PLA 2 pada kultur jaringan hipokampus pasca-hipoksia. Metode: Studi eksperimental in vitro dilakukan pada 24 kultur primer jaringan sel saraf tikus Sprague Dawley dewasa yang dipajankan terhadap hipoksia dengan gas 5% O 2 / 5% CO 2 / N 2 seimbang selama 24 jam. Pascahipoksia, ekstrak Acalypha indica Linn diberikan pada 3 kelompok perlakuan, masing-masing dengan dosis 10, 15, dan 20 mg/mL, sedangkan pada kelompok kontrol tidak diberikan apapun. Setiap kelompok terdiri atas 6 sampel. Setelah inkubasi selama 72 jam, viabilitas relatif sel diukur dengan 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), dan kadar enzim PLA 2 diukur dengan menggunakan metode ELISA. Hasil: Kadar enzim PLA 2 kultur jaringan hipokampus tikus yang diberikan perlakuan ekstrak akar Acalypha indica Linn dalam dosis 10, 15, and 20 mg/mL menurun secara bermakna dibandingkan dengan kontrol (5