Judul: Study of Sediment Transport Pattern in the Sayang Heulang Beach at Pameungpeuk, Garut Resident, West Java
Abstrak: Pantai Sayang Heulang merupakan pantai yang terletak di daerah selatan Jawa Barat. Penelitian ini bertujuan mempelajari pola transpor sedimen yang terjadi di sekitar pesisir pantai yang dipengaruhi oleh karakteristik oseanografi dan distribusi ukuran butiran sedimen. Peramalan gelombang laut menggunakan data angin selama 10 tahun (2012-2021). . Hasil penelitian di sekitar pantai Sayang Heulang menunjukan bahwa tinggi gelombang pecah berkisar antara 0.53 m hingga 1.65 m dengan kedalaman gelombang pecah berkisar antara 0.12 m hingga 0.38 m. Kecepatan arus menyusur pantai berkisar antara 0.01 m/s hingga 1.56 m/s dengan arah cenderung menuju arah Timur karena gelombang dominan yang datang dari arah Barat Daya. Sedimen yang berada di wilayah penelitian menunjukan fraksi sangat kasar. Volume transpor sedimen dihitung menggunakan persamaan CERC 1984 dan pemodelan MIKE 21. Hasil perhitungan empiris menunjukan volume angkutan sedimen dengan rata-rata 0.17 m3/hari, sementara hasil pemodelan menunjukan volume transpor sedimen dengan rata-rata 0.20 m3/hari., Sayang Heulang Beach is part of coast that located in Southern of West Java. This research aims to study the pattern of coastal sediment transport caused by oceanography characteristic and size distribution of sediment grains. Wave forecasting was calculated by wind speed data for 10 years (2021-2021). Based on this research, waves occurred at around Sayang Heulang Beach region was indicated that high breaking waves ranged between 0.53 m to 1.65 m and the depth of breaking waves ranged between 0.12 m to 0.38 m. Longshore current velocity was ranged between 0.01 m/s to 1.56 m/s with the current direction along the coast tend to east caused by dominant waves from southwest. Most of sediment types in research area were indicated as coarse sand. Sediment Transport is calculated by CERC Formulation and Mike 21 Modelling. Average of sediment transport volume obtained by empirical calculations is 0.17 m3/day, meanwhile MIKE21 modelling export the sediment transport average about 0.20 m3/day.
Keyword: Longshore Current, MIKE 21, Sayang Heulang Beach, Sediment, Sediment Transport

Judul: Perubahan Garis Pantai Di Sepanjang Pesisir Pantai Indramayu
Abstrak: The aim of this research is to investigate the characteristics of wave and sediment as well as coastline change in Indramayu. Data for the research consist of Landsat ETM satelite image process and hydro-oceanographic of wave and current. The data were analyzed by using method of energy flux, wind data forecasting, sediment statistics, budget sediment, and processing of the satelite image. Results of the research are (i) maximum wave height ranged from 0.181– 1.179 meter with a period of 1.73 – 3.36 sec, occured on the west season; (ii) sediment of coastal waters was dominated by silt-clay, with a sorting value of very well sorted, skweness very coarse skewed – near semytrical and kurtosis very platikurtik, and maximum transport sediment along the coast 0.13-11.83 kg/day; (iii) tide pattern classified as mixed tide preveling semiurdinal; (iv) current velocity of the waters ranged from 0.012-0.024 m/sec in March and 0.17-0.32 m/sec in July, with a direction of longshore current of 0.14 – 0.34 m/sec; (v) coastline abration occured with an average value of 19.89 m/year.
Keyword: Wave, Sediment, Coastline change, Current, Gelombang, Pasang surut, Arus

Judul: Antibodi anti-idiotipe sebagai kandidat vaksin rabies, Anti-idiotype andibody as a rabies vaccine candidate
Abstrak: Anti rabies serum (ARS) called antibody 1 (Ab1) was used as the antigen to immunize laying chickens. Anti-Ab1 chicken immunoglobulins (IgY), the antiidiotype antibodies against rabies (Ab2) was isolated from chicken blood every week for ten weeks. The highest titer of Ab2 was found at the third week after the last immunization. Immunoglobulin Y was separated by means of ammonium sulfate precipitation, then dialyzed using PBS pH 8.0 for 24 hours at 2 – 8 oC and purified using affinity chromatography column for IgY lead the proteins molecules with 185,000; 95,000 and 49,000 dalton in weigth. Purified IgY was used to immunize New Zealand White rabbit and the antibody response (Ab3) was detected using Agar Gel Precipitation Test (AGPT). The Ab3 showed specific reaction with Ab2 as well as rabies virus. Interestingly, Ab2 and rabies virus express partial identity reaction. This lead the insight, that not all parts of Ab2 are internal image of rabies virus. The efficacy of Ab3 was detected using enzyme linked immunosorbent assay (ELISA) and indicated that the level of Ab3 titer is protective according to WHO standard (more than 0.5 IU/ml). The conclusion of this study is the anti-idiotype antibody can induce protective immune response against rabies virus and can be used as an alternative for rabies anti-idiotype vaccine. Key words : anti-idiotype vaccine, antibody, rabies
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