Judul: A design of Arduino based monitoring and recording device for refrigerated
Abstrak: Refrigeration equipment in refrigerated transportation is built to function for long periods without attention. Air temperature monitoring during transportation takes place could detect whether the equipment was functioning correctly. The solution offered in this research was to design a device to monitor and record temperature during transportation. The aim of this study was to build a system and device prototype to monitor and record temperature of refrigerated transportation and to test the performance the designed device. The device use Arduino open source microcontroller platform as the basis. The data of the temperature stored inside SD eard as a log file to report the temperature history during transportation. The device Will transmit warning to drivers and related stakeholders. Warning activity occurred the fluctuation of the container temperature reach or exceed temperature maximum threshold. Several performance tests were done, included basic feature test, recording fest, and transportation simulation test. From the result, using accuracy formula, the temperature measurement relative accuracy level of the device is 80.19% and absolute average accuracy level is 1.6 °C in 8-10 °C temperature working range.
Keyword: Arduino, Microcontroller, Refrigerated transportation, Temperature recording, Agro industrial technology, System requite ment identification, Prototype development

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: Keanekaragaman Jenis Lumut di Taman Hutan Raya Sesaot Kabupaten Lombok Barat, Provinsi Nusa Tenggara Barat
Abstrak: Kenaekaragaman lumutdi Taman Hutan Raya Sesaot Lombok Barat, Nusa Tenggara Barat memiliki 38 jenis, 13 family dan dua kelas. Keragaman lumut yang paling banyak ditemukan adalah di kawasan hutan primer yaitu ada 32 jenis, di hutan kawasan kebun buah adalah 15 jenis, dan di kawasan hutan tanaman ditemukan sebanyak 16 jenis. Ada tujuh jenis lumut yang terdapat di tiga kawasan yaitu lumut jenis Fissiden sp, Vescularia montagni, Lejeunea sp, Calymperes sp, Calymperes boulagi, Neckeropsis gracilenta, Barbella sp, Taxitithelium instratum dan jenis lumut yang paling banyak ditemukan adalah Lejeunea sp dari famili Lejeuneaceae dan kelasnya adalah Hepatice. Lumut yang paling sedikit ditemukan adalah Taxithelium sp, familinya adalah Sematophyllaceae, dan kelasnya adalah Musci. Calyptotherium sp., familinya adalah Entodontaceae, dan kelasnya adalah Musci, Plagiochila sp., familynya adalah Lophoziaceae, dan kelas Musci, dan Bazzania sp., familynya adalah Lepidoziaceae, dan kelasnya adalah Hepatice. Kondisi hutan berpengaruh terhadap pertumbuhan lumut dan peran ekologi lumut di dalam ekosistem hutan. Lumut juga termasuk tumbuhan perintis, itu terbukti dengan banyaknya lumut yang tumbuh pada pohon tumbang dan bekas tebangan hutan. Indeks nilai penting yang tertinggi terdapat di hutan tanaman yaitu di pada pohon Swietenia mahagoni dengan indeks nilai penting adalah 48.45% dan di kebun buah pada pohon Durio zibethinus dengan indeks nilai penting adalah 34.08%% dan indeks nilai penting tertinggi di hutan primer adalah 43.18% pada pohon Syzigium boerlager.
Keyword: Keanekaragaman, lumut, Sesaot