Judul: Analisis Unjuk Kerja Penyiram Berputar Tekanan Tinggi (Big Gun Sprinkler) di Areal Kebun tebu PT. Laju Perdana Indah, Palembang, Sumatera Selatan
Abstrak: The objective of this research was to analyse of big gun sprinkler used in Laju Perdana Indah (LPI) Company, Palembang. Water from water pond was pumped using water pums that it was driven by a motor diesel of 160 hp (119 kW). Two unit of big gun sprinkler were used in this research and tested on 3 different lateral distances, i.e. 100 m, 150 m and 200 m. When sprinkling performance tests were conducted using 2 nozzle size, i.e. 24 mm and 28 mm is diameter. During sprinkling, the performance analysis parameters are measured, i.e. working pressure, sprinkling discharge, and sprinkling radius. The performance measurement results were compared with SNI 7710-2011 of sprinkler performance requirements of high pressure spinning. The results showed that working pressure, sprinkling discharge, and sprinkling radius using nozzles of 24 mm and 28 mm were (536.26 ± 17.55) kPa and (497,95 ± 18,47) kPa, (56,16 ± 1,87) m3/h and (71,78 ± 4,28) m3/h, and (44,13 ± 3,73) m and (49.04 ± 2.6) m respectively. The results were suitable with SNI 7710-2011 of sprinkler performance requirements of high pressure spinning. Irrigation using nozzle of 24 mm causes water droplets split better and produce uniformity of watering 91%. This value is higher than uniformity by using a nozzle 28 mm which is only 83%, so the use of nozzle 24 mm more effective than 28 mm nozzle. Irrigation cost using nozzles of 24 mm and 28 mm were Rp 543.728/ha and Rp 425.701/ha respectively.
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Judul: Evalusi Kinerja Jaringan Irigasi Curah (Sprinkler Irrigation) melalui Simulasi Hidrolis menggunakan EPANET 2.0.
Abstrak: Sprinkler irrigation network can be a good investment when well designed, installed, maintained and managed. But the calculation manually is time consuming and gives rise to human error. Therefore, this study aims to evaluate the performance of sprinkler irrigation through simulation using software EPANET 2.0 using secondary data is using and data is analysis by using simulation with software EPANET 2.0. This study was conducted on irrigation network in the village of Tenilo, Gorontalo and the villages of Akar-akar, NTB. The simulation resulted the average pressure at both locations excess of the recommended optimum pressure 40 m, but not exceeding the maximum recommended pressure 65 m,the variation pressure on each location is 2.82 m and 9.35 m. Debit issued by sprinkler is also nearing discharge plan 9.11 liters/second. The velocity of the flow both locations is not different much. It’s less than maximum allowable speed 3 m/s, it means that the network is safe from abrasion and water hammer on a pipe. Based on the results of simulation sprinkler irrigation network installed in the village of Tenilo and the villages of Akar-akar have met the criteria of hydraulic limitation in designing a system of sprinkler irrigation.
Keyword: pressure, the velocity of the flow, sprinkler irrigarion, EPANET 2.0, discharge

Judul: Leukemia pada kucing
Abstrak: Leukemia pada kucing adalah suatu penyakit yang sangat patogen, disebabkan oleh sejenis virus. Virus ini dikenal sebagai Feline Leukemia Virus atau FeLV. FeLV ini oleh beberapa ahli dikatakan hanya bersifat ganas pada hewan kucing. Penularannya bisa secara horizontal maupun congenital. Kucing pada semua tingkat umur dapat terserang oleh FeLV ini. Khusus pada bentuk "thymic leukemia", virus ini hanya menyerang anak-anak kucing berumur diba- wah 1 tahun. Kucing-kucing liar atau yang tidak terpeli- hara jarang sekali terinfeksi FeLV. Selain dari serangan virus FeLV itu sendiri, maka penyakit leukemia ini bisa disebabkan oleh beberapa fak- tor yang sudah ada dalam tubuh hewan dan sangat menunjang perkembangan penyakit ini, yaitu antara lain tumor, agen toksik, cedera oleh kecelakaan dan gangguan hemopoiesis. FeLV menyerang sel-sel darah dalam tubuh hewan se- hingga pembentukan darah berjalan tidak normal. Terlihat sel-sel darah yang belum dewasa sudah beredar dalam sir- kulasi darah. Bentuk dan jumlahnya tidak lagi seimbang dalam tubuh hewan kucing tersebut. Gejala klinis antara lain kekurusan, ikterus, anemia, lemah, anoreksia, dyspnoe, sulit menelan, batuk, dan membran mukosa pucat. Selain itu kelenjar pertahanan tubuh juga membengkak, kemudian terjadi hepatomegali, spleenomegali dan pembengkakan pada ginjal. Terbentuk massa tumor pada beberapa tempat. Secara biopsy pada sumsum tulang akan terlihat be- berapa perubahan. Sumsum tulang berwarna merah tua atau abu-abu. Konsistensinya lunak dan terdapat banyak sekali memproduksi sel darah putih. Melalui gambaran darah leukemia ini lebih mudah didiagnosa. Jumlah retikulosit rendah sekali. PCV 8-15%, hemoglobin menurun, sel darah putih (WBC) meningkat, lim- fosit meningkat, Alfaglobulin juga ada peningkatan, dan banyak eosinofil yang belum dewasa beredar dalam darah…dst
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