Judul: Epidemiology of coral black band disease in Kepulauan Seribu, Jakarta
Abstrak: Coral diseases that have emerged since the early 1970s with finding the Black Band Disease. Coral disease have caused significant regional ecological impacts. However, there has been a paucity of research into coral disease in South-East Asia, including Indonesia. This study provides baseline coral disease data in the Kepulauan Seribu Marine National Park. Previously only one type of disease (White Syndrome, WS) has been detected at this site. The coral disease data which successed provided were distribution and abundance, prevalence, incidence and progression of BBD within the Kepulauan Seribu region, and a Marine National Park as spatially from the nearest sites (zone 1), middle sites (zone 2) and the farthest sites (zone 3) from the mainland of Java Island. Research on the abundance and distribution of coral disease has been implemented on 12 sites spatially with 1 survey since June-July 2011, whereas prevalence, incidence of BBD carried out on 6 permanent sites for 1 year started from June 2011-March 2012 as representative of 1 cycle of the seasons (dry, transition 1, rain, transition 2). The research carried out by using line intercept transect (LIT) with 3x20 m to know the coral condition on upper reef slope, then continued by belt transect on the same place with 2x20m and 3 replicates. Total area coverage is 120 m2. The coral disease progress carried out on zone 1 and zone 2. Especially on the BBD peak season, the survey was carried out at reef slope (8 sites) to get BBD prevalence to know the BBD prevalence on different depths. The results showed that coral diseases of BBD found in mostly on the high life coral cover and especially on the coral Montipora sp species dominantly at that location. This study showed a positive correlation between overall coral cover and the dominant reef building coral Montipora spp on the research sites and found two main diseases BBD and WS which were highly prevalent throughout all locations. Based on spatial location of the abundance average, the highest abundance of BBD (0.08 col. m-2, n=3) was found at zone 1, whilst for WS (0.05 col.m-2, n=5) highest abundance was found at zone 2. BBD abundance was characterized by the higher of the life coral cover of scleractinian and Montipora spp, colony number of corals and especially Montipora spp. The survey for one year (one cycle of the seasons) found both BBD 1549 colonies and other type of disease 356 colonies during the study. BBD was found to be the most prevalent disease, ranging from 0.31% to 31.64%. Highest average prevalence was found at zone 2 (6.31%), followed by zone 3 (5.76%), with zone 1 having the lowest average prevalence at 3.76%. Due to prevalence being lowest at zone 1, it is unlikely that anthropogenic sources from the mainland are responsible for increased BBD prevalence. Data from temporal surveys revealed BBD abundance was highest during the transitional time which was the period between dry and rainy seasons (10.17%), followed by rainy season (4.88%) and dry season (4.26%). BBD incidence was happen at the same role with the BBD prevalence
Keyword: black band disease, prevalence, incidence, virulence, Montipora spp, Kepulauan Seribu

Judul: Epidemologi penyakit karang sabuk hitan (Black band disease) di Kepulauan Seribu, Jakarta, Epidemiology of coral Black Band Disease in Kepulauan Seribu, Jakarta
Abstrak: Penyakit karang telah diketahui keberadaannya sejak tahun 1970-an dengan ditemukan penyakit sabuk hitam (Black Band Disease, BBD). Penyakit karang secara signifikan telah memberikan dampak kerusakan ekologi secara regional. Penelitian penyakit karang saat ini masih sedikit dilakukan di Asia Tenggara termasuk di Indonesia. Penelitian ini bertujuan untuk mengetahui distribusi dan kelimpahan penyakit karang secara spasial di 12 lokasi, tingkat prevalensi, insidensi dan virulensi penyakit karang sabuk hitam secara spasial dan temporal di Kepulauan Seribu, Jakarta. Penelitian sebelumnya pernah menemukan satu jenis penyakit karang yaitu White Syndrome, WS. Data distribusi dan kelimpahan penyakit karang diperoleh dengan melakukan pengamatan pada 12 lokasi dengan 1 kali survei pada bulan Juni-Juli 2011. Observasi tentang prevalensi dan insidensi penyakit sabuk hitam dilakukan pada 6 lokasi permanen, masing-masing 2 lokasi pada lokasi terdekat (zona 1), pertengahan (zona 2) dan lokasi terjauh (zona 3). Pengamatan selama 1 tahun dilakukan sejak Juni 2011 hingga Mei 2012 untuk mewakili 1 siklus musim (kemarau, peralihan 1, hujan dan peralihan 2)., Coral diseases that have emerged since the early 1970s with finding the Black Band Disease. Coral disease have caused significant regional ecological impacts. However, there has been a paucity of research into coral disease in South-East Asia, including Indonesia. This study provides baseline coral disease data in the Kepulauan Seribu Marine National Park. Previously only one type of disease (White Syndrome, WS) has been detected at this site. The coral disease data which successed provided were distribution and abundance, prevalence, incidence and progression of BBD within the Kepulauan Seribu region, and a Marine National Park as spatially from the nearest sites (zone 1), middle sites (zone 2) and the farthest sites (zone 3) from the mainland of Java Island. Research on the abundance and distribution of coral disease has been implemented on 12 sites spatially with 1 survey since June-July 2011, whereas prevalence, incidence of BBD carried out on 6 permanent sites for 1 year started from June 2011-March 2012 as representative of 1 cycle of the seasons (dry, transition 1, rain, transition 2).
Keyword: black band disease, prevalence, incidence, virulence, Montipora spp., Kepulauan Seribu, penyakit sabuk hitam, prevalensi, insidensi, virulensi

Judul: Rancangan dan pembuatan instrumen sortasi telur berdasarkan berat secara elektronis
Abstrak: Menyambut datangnya era industrialisasi disegala bidang, salah satu sumbangan yang diperlukan adalah penciptaan instrumen-instrumen yang merupakan sarana dalam peningkatan produksi. Tujuan penelitian ini adalah merancang dan membuat instrumen sortasi telur berdasarkan perbedaan berat dengan sensor 'Linear Variable Differential Transfor- mers (LVDT)'. Instrumen terdiri dari dua unit yaitu unit elektris dan mekanis. Unit elektris terdiri dari LVDT, penyearah, penguat dan penanding. Mekanisme instrumen adalah, dengan adanya beban yang dikenakan pada salah satu sisi unit mekanik (prinsip timbangan) maka akan menggerakkan core. Dan selanjutnya terjadi perbedaan tegangan. Setelah melalui. sistem elektronik, akan menggerakkan buzzer (penarik). Karena penarik dihubungkan dengan sisi-sisi penerima beban maka setiap penarik bereaksi secara langsung telur digulirkan ke salah satu sisi. Instrumen yang dibuat mempunyai kemampuan sortasi pada kisaran berat telur antara 45.50 50.56 g. Ketelitian sensor mencapai 1 mV dengan sensitivitas instrumen 1.77 mV/g pada input 12 V (AC)/1 A.
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