Judul: Model of Groundwater Production Monitoring System Based on GSM Communication Modem and Web Based GIS (Case Study in Bandung Basin)
Abstrak: Monitoring of groundwater condition due to ground water exploitation is not a trivial task. The regulation issued by the Ministry of Energy and Mineral Resources and also from the local government concerning procedure exploitation of ground water have been issued. However, in reality it is inconsistent because of absence of monitoring. The objective of this research is to develop monitoring system of ground water exploitation using telemetric method, utilized GSM communication. It is expected that this system will assist to monitor the condition of ground water and can replace the role of supervisors. The model is applied to monitor the condition of ground water in a region of Bandung Basin. In this research, only one Remote Terminal Unit (RTU) is used while the others RTU are simulation. This research used some open source softwares to manage incoming and outgoing data, parsing data, storing data into database, querying or retrieving, gridding, processing and displaying. The research is designed for the network system so it can be displayed in WebGIS system. The result of the system can give information about numeric volume, water level and also map explaining condition of water level at certain area in Bandung basin.
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Judul: Rancang Bangun Monitoring Sistem Irigasi Otomatis Berbasis GSM/GPRS
Abstrak: Irrigation is a human attempt to irrigate farmland. Various efforts have been done to build the concept of irrigation. However, the real implementation may create different problems. Basically, irrigation is related with the accessibility of ground water, which gives a large contribution to increase the agricultural production. A good irrigation system that can provide water in the correct level, amount, and time is required. The irrigation system should be well planned, designed, and operated efficiently to increase the agricultural production and ease of use in their operations. This research is a part of IMHERE IPB activity on the event of strengthening agricultural research for food security and sovereignty: advanced infrastructure for food security and sovereignty. The focus of this research is the development of automated irrigation system for food production land based on the data communication using GSM/GPRS. Arduino microcontroller was used as a client with GSM/GPRS shield to communicate with the internet as the server. Soil moisture was used as the sensor to detect the water content of farmland. LED was used to represent the real actuator of irrigation. If the water content detected by the sensor is less than 300, the actuator at the client will be turned on. In the system, data collected by the sensor was immediately sent to the server. Utilizing this scheme, it was found that the average time for connecting Arduino client to the server without delay was 40 seconds. The system was also tested by giving a certain delay, where sensor data was collected every 10, 30, and 60 seconds after the previous data from client was received correctly by the server. The results showed that there was no data loss due to the communication from Arduino client to the server. Furthermore, the data delivery was not affected by the addition of delay on the system.
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Judul: Sifat Fisik dan Kimia Daging Kelinci Hyla Hycole dan New Zealand White.
Abstrak: Hyla dan hycole merupakan kelinci pedaging unggul dengan laju pertumbuhan dan tingkat prolifik yang tinggi. Kedua kelinci tersebut masih relatif baru dikembangkan di Indonesia, sedangkan kelinci new zealand white telah adaptif dan populer sebagai kelinci pedaging. Penelitian ini bertujuan untuk membandingkan kualitas daging kelinci hyla, hycole dan new zealand white berdasarkan sifat fisik dan kimia. Kelinci mulai dipelihara pada kisaran rataan bobot 2 000-2 256 g hingga mencapai bobot akhir 2 700-3 500 g dengan pemberian kualitas pakan yang sama (protein 17.8% dan energi 4098 kcal). Otot longissimus dorsi digunakan sebagai bahan uji sifat fisik, sedangkan daging dari setiap potongan komersial digunakan untuk uji sifat kimia. Hasil uji sifat fisik menunjukkan bahwa rataan nilai pH akhir daging kelinci hyla, hycole dan new zealand white adalah 5.67, sedangkan untuk susut masak 38.27-39.72%, keempukan 3.10-3.70 kg cm-2 dan DMA 23.75-28.18%. Hasil uji sifat kimia menunjukkan nilai rataan persentase kadar air 75.00-77.26%, abu 1.08-1.14%, lemak 3.29-4.05%, protein 18.15-19.64% dan gross energy 1 327.00-1 521.20 kcal kg-1. Kelinci hyla, hycole dan new zealand white memiliki kualitas daging yang sama baiknya.
Keyword: hycole, hyla, new zealand white, sifat fisik dan kimia