Judul: : Pengaruh Salinitas terhadap Sintasan dan Pertumbuhan Benih Ikan Baby Dolphin Mormyrus longirostris
Abstrak: Baby Dolphin fish is one of many aquaculture commodities with high demand in export market. However, the high demand of Baby Dolphin has not been balanced with the profit of the fish fry production. One of technologies that could be applied to increase the production efficacy is increasing osmoregulation effectivity by optimizing the salinity. The purpose of this research was to determine the optimum salinity to improve survival rate and growth of Baby Dolphin fries. The average of initial weight and length of Baby Dolphin used in this study was 0.15±0.022 g and 1.46±0.12 cm reared in glass tanks sized 49x30x32 cm filled with 30 litres of water. Completely randomized design was used in this research. The treatments consisted of 0 ppt, 3 ppt, dan 6 ppt of salinity. Rearing was performed for 21 days. Siphoning and water exchange of 75% was performed daily for rearing media. Salinity of 0 ppt showed the best results with 98.33±2.88% survival rate, 1.511±0.11 g absolute growth rate, and 7.64±0.27% daily growth rate.
Keyword: Bogor Agricultural University (IPB), and growth, Baby Dolphin fry, Salinity

Judul: Growth Performance of Synodontis eupterus in Preservation Media with Salinity
Abstrak: Good environmental condition supported by sufficient feeding and provision of good container with optimum salinity can increase the production output. This research aimed to obtain information about the relationship of salinity with growth of sinodontis. The fry that used have average length of 3,41+0,04 cm with average weight of 0,60+0,02 g which comes from Cibinong, West Java. The fry first adapted into aquarium and next treated on 0, 2, 4 and 6 treatment with 3 repetitions. Containers used for the treatment are 12 aquariums which have dimension of 30x25x25 cm3. Each one is filled with 15 liters of water. The length of time for the development of the fish is 28 days. During the period of time, the fish were fed with silkworm twice a day in the morning and in the afternoon in at satiation. Water replacement is 75% volume per day. Salinity treatment significantly affects (P<0,05) length growth rate (LPP), weight growth rate (SGR), and feed efficiency (EP). Treatment with 2 ppt salinity showed the best production performance.
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Judul: Kerusakan bantalan rel kereta api di wilaya inspeksi 2 jalan dan bangunan perusahaan jawatan kereta api (pjka),cirebon
Abstrak: Kereta api merupakan salah satu sarana angkutan yang murah, cepat dan aman serta dapat mengangkut barang dalam jumlah besar. Kelancaran operasi sarana angkutan tersebut banyak ditentukan oleh kondisi jalan rel, termasuk kondisi bantalannya. Dalam hal ini bantalan rel kereta api dapat dibuat dari kayu, logam, atau beton. Namun demikian kayu merupakan bahan yang paling banyak digunakan sebagai pembuat bantalan rel kereta api di berbagai negara. Kenyataan menunjukkan bahwa kayu yang digunakan sebagai bantalan rel kereta api sering mengalami berbagai macam kerusakan yang menyebabkan bantalan tidak berfungsi lagi atau menurun fungsinya. Di Indonesia, informasi mengenai jenis dan tingkat kerusakan bantalan kayu masih sangat kurang, pada- hal informasi tersebut sangat penting sebagai dasar pertimbangan dalam rangka pemeliharaan jalan kereta api, agar umur pakainya (service life) lebih lama.
Keyword: bantalan rel