Judul: Pengembangan Robot Jelajah Bawah Air (RJBA V. 2014) untuk Eksplorasi Bawah Laut
Abstrak: Remotely Operated Vehicle (ROV) is an underwater robotic vehicle that able to perform the underwater movement controlled from the surface via thetered cable and connected to the control system. The purpose of ROV is to observe and work underwater in accordance with the function of making of the robot itself. The ROV V. 2014 is improvement of the previous ROV developed by the Department of Marine Sciences and Technology, Bogor Agricultural University. The ROV V. 2014 has improved power supply system, thrust system, ballast system, and gripper systems. The making of a ROV is divide into four parts : design, programming, electronics, and mechanical/hardware. This new generation of underwater vehicle has dimensions of 65x35x40 cm, total weight ± 19kg, a system of ballasts with ballast tank 14.879 dm3 volume of space, a wide opening claw gripper with a maximum diameter of 8 cm, and 5 thrusters to move the robot horizontally and vertically, thetered cable of the 28 meter long to the surface and joystick to control the maneuver of the vehicle.
Keyword: joystick, thruster, gripper, ballast system, ROV

Judul: Rancang Bangun dan Uji Coba Robot Jelajah Bawah Air (RJBA V.2015) dengan Lengan Manipulator
Abstrak: ROV adalah sebuah robot bawah laut yang dikendalikan oleh operator ROV untuk pekerjaan di bawah air. ROV terbagi menjadi lima kelas yaitu: Pure Observation, Observation With Payload Option, Work Class Vehicles, Seabed-Working Class, dan Prototype or Development Vehicles. Dalam penelitian ROV telah dikembangkan RJBA V.2015 dengan penambahan manipulator, sensor dan perbaikan sistem olah gerak robot. Tujuan dari penelitian adalah mengembangkan robat jelajah bawah air sehingga dapat melakukan fungsinya dalam hal eksplorasi bawah laut. Tahapan penelitian terdiri dari rancang bangun RJBA V.2015, elektronika, program kendali, dan mekanika. RJBA V.2015 ini memiliki berat ±18 kg dengan dimensi 107 cm x 35 cm x 20 cm. Robot ini memiliki manipulator dengan bukaan maksimal 10 cm, 4 motor penggerak, sensor 10 DOF dan dihubungkan dengan kabel sepanjang 15 meter. Robot ini termasuk kedalam kategori III A Work Class Vehicles. RJBA V.2015 mampu melakukan pergerakan secara horizontal dan vertikal dengan baik. Manipulator RJBA V.2015 dibuat sederhana, mampu bergerak terhadap sumbu X, Y, Z serta mampu mencapit dengan baik…
Keyword: Manipulator, Movement, Sensor, RJBA V.2015, ROV, Robot anderwater, Sistem kerja manipulator, Desain RJBA, Rancang bangun, Gerak robot

Judul: Sintesis dan Pencirian Kompleks Fe(III)-Kuersetin
Abstrak: Quercetin belongs to flavonols which is able to chelate metal ions. Quercetin may chelate metal ions at 3’,4’-catechol, 3- or 5-hydroxycromone sites. In this study, quercetin was complexed with Fe(III). The complex with Fe(III) ions from FeCl3·6H2O was more stable than the complex derived from Fe(NO3)3·9H2O. The quercetin was yellow in color and showed maximum wavelengths (λ􀭫􀭟􀭶) at 250 and 370 nm. The Fe(III)-quercetin complex from Fe(NO3)3·9H2O was yellowish green with 􀟣􀭫􀭟􀭶 at 280 and 420 nm, whereas that from FeCl3·6H2O was dark green with 􀟣􀭫􀭟􀭶 at 280 and 430 nm. The 􀟣􀭫􀭟􀭶 shift indicated that the complex was formed at 3-hydroxychromone site. The Fe(III)- quercetin complex was formed with 1:1 metal-ligand mole ratio based on atomic absorption spectrophotometry analysis and the X-ray diffractogram showed that the crystallinity of the complex was 37%.
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