Judul: Resistensi beras terhadap serangan sitophilus oryzae linnaeus (coleoptera, curculionidae)
Abstrak: Sitophilus oryzae Linnaeus merupakan salah satu hama gudang yang termasuk penting, karena menimbulkan kerusakan besar terhadap bahan makanan terutama beras dan jagung yang disimpan. Di negara-negara maju kerusakan tersebut mencapai 5-10 persen per tahun, dan di negara-negara berkembang 10-54 persen per tahun. Cara yang umum untuk mengatasi hama gudang adalah dengan fumigasi insektisida. Akan tetapi karena senyawa kimia tersebut dapat mencemari bahan makanan dan lingkungan, maka cara tersebut memerlukan pertimbangan yang seksama. Kecuali itu penekanan populasi ini menghendaki cara yang praktis, ekonomis dan tidak membahayakan manusia. Salah satu kemungkinan yaitu dengan memanfaatkan resistensi yang mungkin ada pada beras terhadap serangan S.oryzae. Tujuan penelitian: (1) Mempelajari kemungkinan adanya varietas beras yang tidak disukai oleh serangga S.oryzae. (2) Mempelajari kemungkinan adanya varietas beras yang dapat berpengaruh buruk terhadap kehidupan S. oryzae. Penelitian terdiri dari : (1) Penelitian preferensi, dan (2) Penelitian antibiosis. Penelitian preferensi dilakukan dengan rancangan kelompok dalam enam ulangan. Penelitian antibiosis dilakukan dengan rancangan acak lengkap dalam tiga, enam dan 12 ulangan.
Keyword: Oryza;, Cereals;, Crops plants;, Plant diseases;, Bogor Agricultural University;

Judul: Resistensi Relatif Beras Pecah Kulit dan Beras Sosoh Lima Varietas Padi asal Banyumas terhadap Serangan Sitophilus oryzae
Abstrak: The purpose of this study was to examine the resistance level of five different variety of brown rice and milled rice from Sitophilus oryzae attack during storage. Five varieties of rice that examined were Pandanwangi, Inpari 13, IR-64, Situ Bagendit, and Srikandi which all were planted in Banyumas region. This research was conducted in two experiments. The first experiment is done to measure the growth of Sitophilus oryzae during storage, while the second experiment is done to measure the rate of loss during storage. In the first experiment, 200 seeds of rice was infested by 5 couples of Sitophilus oryzae aged 7-15 days and kept for 7 days. The insects were then removed and the rice was observed every day for 14 days for emergence of the first generation (F1) of insects. The progenies were counted every day until there were no emergence for five consecutive days. The experiments were conducted in three replications. From this experiment, the parameters were number of progenies (Nt), development period (D), development index (ID), intrinsic rate of increase (Rm), and weekly multiplication capacity (λ). In second experiment, 100 g of rice infested by 25 insects and stored for 6 weeks. After 6 weeks, insects were removed and the storage loss were determined. In this second experiment, the parameters observed were percentage increase of water fraction, the loss of dry matter loss, and percentage of frass. Those two experiments were conducted in three replication. According to this experiment, Srikandi rice has the highest resistance towards Sitophilus oryzae attack among other varieties.
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Judul: Rancang Bangun Jaringan Peer-to-Peer Webcam dengan Menggunakan Protokol JXTA
Abstrak: Internet is a media for exchange of information and data. Network used on the internet today still implementing client-server network model. Clients need the information must related to the server and request the information needed. System established client-server network is a centralized system and can potentially commercial. If the server was down, the information requested by the client can’t be given and the whole network will be disrupted. Peer-to-peer network is set up to reduce the problem of client-server. Peer-to-peer will not be affected to the problems that occur in each host. If one host to crash or be unable to connect, the network was still able to run. In this research we develop an application using JXTA protocol as a framework for peer-to-peer and API JMF as an additional feature integrated on a JXTA application. API JMF is used to access webcam and produces images or videos. Video or image files generated by the API JMF can be distributed directly into the peer-to-peer network which has been formed. Other connected peers can directly search and download the video files or images. Downloaded files will be directly stored into a local folder on each peer. Files downloaded can be directly redistributed by every peer. If one peer dies, the other peer can share the data from the dead peer after the file is downloaded from the source peer.
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