Judul: Kajian Sistem Antrian Angkutan dan Pembongkaran Tebu di PT Gunung Madu Plantations, Lampung
Abstrak: Sugarcane is a perishable crops (yield easily down). The yield of sugarcane can be kept down if not immediately in the process although it has been cut down. Freshness is one of the factors that can affect a decrease in the yield of sugarcane. Queue at the post demolition transport sugar cane to the problem, because the delay time of grinding sugar cane. Queue transport arising from random arrival. The purpose of this study : (1) Identify the demolition system in PT Gunung Madu Plantations (GMP) transport cane, (2) Identify the queuing model implemented in PT GMP, and (3) to analyze the queuing model that should be in the process of dismantling transport cane to PT GMP order to ensure an optimum. The method used is based on the time of arrival queuing simulation transport and unloading time for each transport. The data used are secondary data, that is data transport sugarcane population for one day. The results of research on the sugarcane transport disassembly queuing system in PT GMP indicates that the value of the total waiting time, total time in the system, the total idle time, (), (L), (Lq), (W), (Wq), and the probability the server idle (Po) on the simulation results better than the actual condition. It shows that the queuing system on dismantling the postal transport cane to PT GMP still can be optimized so that the lower the potential decrease in the yield of sugarcane 5% -25%
Keyword: transportation, sugar cane, queueing system, demolition

Judul: Sistem Penunjang Keputusan Penjadwalan Transportasi Angkut Tebu (Studi Kasus PG Rajawali II Unit Jatitujuh Majalengka)
Abstrak: One problem that happened in production’s process at PG Rajawali II Unit Jatitujuh is that total of sugar cane the company could get after sugar cane has been cut off is not the same with the logging plan that has been made. Transportation scheduling program CaneTrans made to decrease the amount of idle time of sugar cane and truck when sugar cane transportation from plantation to factory is being progress. Transportation scheduling and the total of truck needs is the output that CaneTrans resulted and it is updated everyday based on logging plan. Times, distances of plantation to factory, and weather used as variables which can influence the result of transportation schedule program. Total of the needs of truck is the best result of the truck needs that adapted with the result of transportation scheduling. To get more valid transportation schedule, queuing analyze has been done at unloading station. The results of the analysis shows that the queuing model formed at station A is M:M:1:FCFS:F with 58 minute of queuing time and queuing model at station B is M:M:1:FCFS:I with 48 minutes of queuing time. Efficiency for the average of sugar cane that can be transported by each truck is increased after compare result of the program with the actual data on May 25th, 27th, 29th, and 31st, the efficiency is resulted 114,19%, 102,8%, 104,1%, and 113,26% where all of sugar cane that has been planned to transported from plantation to factory can be taken with fewer of total of the truck needs than the actual data.
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Judul: Pertahanan pada ikan terhadap infestasi ichthyophthirius multifiliis dengan tetrahymena pyriformis dan tetrahymena thermophila
Abstrak: Ichthyophthirius multifiliis adalah protozoa dari kelas Oligohymenophorea, ordo Hymenostomatida dan famili Ophryoglenidae. Protozoa ini sering menyerang ikan liar, ikan yang dibudidayakan dan ikan hias dalam akuarium. Bentuk dewasanya (trophozoit) tinggal dibawah kulit ikan yang menjadi inangnya. Mereka makan runtuhan sel dan mengelupaskan epithel. Angka mortalitas dapat mencapai 100% pada ikan yang dipelihara dalam akuarium. Penyakit ini telah dilaporkan dari semua benua. Banyak preparat kimia yang dapat dipakai untuk mengontrol parasit ini. Yang paling berhasil dari antara preparat-preparat kimia yang digunakan adalah malachite green dengan konsentrasi 0.25 ppm yang dibiarkan bekerja selama 1 jam. Namun ada masalah yang timbul dalam pengobatan, karena di dalam hampir setiap perairan terdapat parasit tersebut. Hal ini menyebabkan sewaktu-waktu atau secara kontinyu terjadi infestasi oleh parasit ini dalam populasi ikan. Untuk mengatasi masalah ini maka tindakan yang dianggap praktis dan efektif untuk mengontrol parasit ini adalah imunisasi. Disinipun timbul permasalahan pula. Karena Ichthyophthirius multifiliis adalah parasit obligat, maka sulit mengumpulkannya dalam jumlah yang cukup untuk pembu- atan vaksin. Maka dicari sumber lain untuk membuat vaksin terhadap parasit ini. Hasil penelitian menunjukan bahwa Tetrahymena pyriformis dan Tetrahymena thermophila dapat dipakai sebagai vaksin terhadap Ichthyophthirius multifiliis. Masalah yang timbul kemudian adalah bahwa perlindungan terhadap Ichthyophthirius multifiliis ternyata tergantung pada strain (galur) atau isolat dari kedua spesies Tetrahymena di atas yang digunakan. Sebagai pertahanan bentuk lain dari ikan selain imunitas dapat dikemukakan ketahanan non imunologis yang tergantung pada spesies ikan dan kenaikan kadar vitamin C didalam makanan.
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