Judul: Fenologi Pembungaan dan Penyerbukan Buah Naga Hylocereus undatus, Hylocereus costaricensis dan Selenicereus megalanthus
Abstrak: The objectives of this reseach was to observe flowering phenology of dragon fruit (Hylocereus undatus, Hylocereus costaricensis and Selenicereus megalanthus) and to investigate if pollination types affect fruit quality. This research consisted of two experiments; the first is observation on flowering phenology. The second experiment was arranged in randomized complete block design with type of pollination as the treatment, i.e open pollination of H. undatus (P1), controlled self pollination of H. undatus (P2), controlled cross pollination of H. undatus x H. costaricensis (P3), open pollination of H. costaricensis (P4), controlled self pollination of H. costaricensis (P5), and controlled cross pollination of H. costaricensis x H. undatus (P6). The treatments were repeated 4 times. Development of flower bud until blooming in Hylocereus spp. was about 19-21 days, while in S. megalanthus took 29-31 days. Based on pollen viability and stigma receptive period, the optimal pollination time was between 11.00 pm to 2.00 am for the three species. All types of pollination resulted in 100% fruit set. Fruit weight from self pollination of H. costaricensis was the highest among types of pollination, while total soluble solid from controlled cross pollination of H. undatus x H. costaricensis was the highest. Controlled pollination, both self and cross of H. costaricensis produced bigger fruit than open pollination.
Keyword: receptivity stigma, pollen viability, fruit set, self pollination

Judul: Induksi Pembungaan dengan Penambahan Penyinaran dan Pengaruh Dmur Bunga terhadap Pembentukan Buah pada Hylocereus spp.
Abstrak: The aim of this research was to study the effect of extended light on flowering off season and to investigate if over anthesis flowers were potential for fruit production of Hylocereus spp. The study consisted of two experiments both were arranged in randomized complete block design (RCBD) with one factor. Lamp power (45 watts, 55 watts and without extended light) was the factor for the first experiment with 3 replications. In the second experiment flowers age was used as treatment, i.e. pollination at anthesis (0 hours after anthesis /HAA), 6, 12 and 18 HAA, and each was applied on 7 flowers. The results from the first experiment showed that extended light with 45 and 55 watts for 11 hours/day induced off season flowering in dragon fruit after 54 days. The development of induced flowers was similar to those on season flowers (19-21 days), yet fruit set of the off season flowers were only 39.5% (45 watts) and 66.6% (55 watts). From the second experiment it was found that pollination was successfully carried out at anthesis until 12 HAA with 100% fruit set and marketable fruit size. Pollination at 18 HAA though produced marketable fruit size; however the fruit set was only 14.3%.
Keyword: lamp, dragon fruit, day length, cross pollination

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