Judul: Rancang bangun dan uji kinerja sea surface temperature (SST-Towfish)
Abstrak: Penelitian ini menghasilkan sebuah instrumen Sea Surface Temperature (SST-Towfish) untuk merekam suhu permukaan laut dilengkapi dengan sensor posisi berbasis Global Positioning System (GPS). Terdapat lima tahapan dalam perancangan instrumen ini yaitu, perancangan casing, perancangan sistem elektronik, perancangan perangkat lunak, uji laboratorium dan uji lapang. Casing terbuat dari bahan alumunium dan polytetrafluoroethylene (PTFE). Alumunium digunakan sebagai bahan tabung utama, tabung sensor, dan sayap. PTFE digunakan sebagai tabung antena GPS agar instrumen dapat menerima sinyal satelit. Sistem elektronik dibangun menggunakan Arduino promini sebagai prosesor, sensor DS18B20 untuk mengukur suhu, modul MMC Card sebagai media penyimpanan, modul GPS Ublox Neo.6M.0.001 sebagai sensor posisi. Perancangan perangkat lunak menggunakan software Arduino IDE v1.5.5. Hasil uji laboratorium antara suhu yang terbaca pada instrumen SST-towfish yang telah terkalibrasi dengan termometer raksa menunjukan nilai galat (error) berkisar antara 0 0.09 °C dengan nilai RMSE 0.062 sehingga dapat dikatakan bahwa SST-Towfish memiliki akurasi yang baik. Hasil uji-t dengan selang kepercayaan 95% (0.05), menunjukan nilai suhu yang terbaca pada SST-Towfish tidak berbeda nyata dengan nilai suhu yang terbaca pada termometer raksa. Uji lapang dilakukan di Pulau Pramuka, Kepulauan Seribu. Hasil pengukuran lapang dari SST-Towfish menunjukan suhu permukaan laut di wilayah perairan Pulau Pramuka berkisar antara 28.6-30.5 °C pada saat uji coba…
Keyword: Sea surface temperature, DS18B20, GPS, Instrumen, Casing design, Electric system, Software, Laboratory test, Field test, Satellite signal

Judul: Rancang Bangun dan Uji Kinerja Water Temperature Data Logger
Abstrak: Water temperature data logger is an instrument to record the water temperature automatically and to show a comprehensive monitoring of temperature condition of the medium or environment. This research aims to design and construct water temperature data logger and to perform field test. There were five stages conducted: the casing design, electronic system design, software design, test labs, and field test. Casing was designed using cylindric aluminum material with a diameter of 3.2 cm and a length of 16.5 cm. The electronic systems are built from the microcontroller ATmega328P as main controller, DS18B20 as temperature sensor, mini DC motor as vibration indicator, DS3231 as time marker sensor, and micro SD card as data storage. The result of performance test of water temperature data logger showed that casing was waterproof and did not need an addition of ballast. The battery life time is 10 days 8 hours for 30 minutes sampling intervals. The range error value of sensor calibration is between (-0.37) – 0.41°C and RMSE value 0.23 °C. The result of measurement in Bogor Agricultural University lake on October 10th – 20th 2013 ranged from 27.69 - 31.63 °C with the lowest daily temperature at 5.30 – 8.30 WIB and the highest at 12.00 - 16.00 WIB. T-test comparison of data between the water temperature data logger and a thermometer in MSP Department FPIK IPB pond for two days showed that the data were not significantly different
Keyword: temperature, performance test, instrument, design, data logger

Judul: Onset, Durasi, dan Gejala Klinis Anestesi pada Kelinci New Zealand White (Oryctolagus cuniculus) dengan Kombinasi Ketamin-Xylazin Intramuskular
Abstrak: The aim of this research was to expound the onset, duration, and clinical signs observed on anaesthesia phase using ketamine-xylazine combination in New Zealand White rabbits. Fifteen New Zealand White rabbits (Oryctolagus cuniculus) were randomly subjected into three groups of five animals each. Those in group A were anaesthetized using a combination of 35 mg/kg ketamine and 5 mg/kg xylazine given i/m. Group B animals were anaesthetized using a combination of 40 mg/kg ketamine and 5 mg/kg xylazine while group C were anaesthetized using a combination of 45 mg/kg ketamine and 5 mg/kg xylazine, both given i/m. The result of this study indicated that the onset of anaesthesia marked by loss of pain response differ not significantly among the three groups (P < 0.05). Duration of anaesthesia and recovery significantly differ (P < 0.05) as the dose of ketamine increased. The onset of anaesthesia clinical signs within induction phase showed significant differences on sternal recumbency, lateral recumbency, and constricted pupil. Meanwhile the onset of anaesthesia clinical signs showed no significant differences (P<0.05) within recovery phase. It was concluded that onset of anaesthesia and clinical signs in induction phase were directly proportional as the ketamine’s dose increased. Meanwhile duration of anaesthesia and duration of recovery were inversely proportional with the dose increasing.
Keyword: anesthesia, ketamine-xylazine, New Zealand White, rabbit