Judul: Pemodelan Perubahan Garis Pantai Sekitar Jetty di Pelabuhan Pendaratan Ikan (PPI) Glayem-Juntinyuat, Kabupaten Indramayu.
Abstrak: Shoreline changes along Juntinyuat coast located at north side of West Java was studied by developing a model particularly arround PPI Glayem jetty built to protect a fisheries harbour inside a river mouth. Waves that break at coast were predicted by using winds data at the offshore. The longshore sediment transports were mostly from south-east to north-west. Then result of shoreline model was validated by shoreline acquired from QuickBird imagery in 2008. At south-east of jetty, sedimentation occurred and the result of the model agree well with that of image. Theoritically sedimentation at that side resulting as a consequence of sediment transport was block by jetty. In contrast, erosion occurred at north-west site of jetty which caused by eddys, wave diffraction and no supply of sediment. However due to existance of ponds along the shore, the erosion is only about 35 m. The model has to be adjusted by lowering the sediment transport. The result of the model agreed well with that of image near the jetty especially in the south-eastern side but discrepencies occurred further away from the jetty.
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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: Katalis Zink Ferit Tersubstitusi Cu untuk Oksidasi Benzil Alkohol
Abstrak: Katalis berperan dalam menurunkan energi aktivasi. Katalis ZnFe2O4 dan ZnFe2O4 tersubstitusi Cu disintesis menggunakan metode kopresipitasi untuk digunakan dalam oksidasi benzil alkohol. Katalis dicirikan dengan spektrofotometer inframerah (FTIR) dan difraktometer sinar-X. Spektrum FTIR menunjukkan puncak serapan dari ikatan Zn-O dan Fe-O masing-masing pada rentang 559‒575 cm-1 dan 419‒447 cm-1. Difraktogram menunjukkan terbentuknya fase tunggal Zn0.6Cu0.4Fe2O4 pada katalis ZnFe2O4 tersubstitusi Cu 20%. Benzil alkohol dioksidasi dengan sistem refluks. Konversi benzil alkohol meningkat dengan meningkatnya suhu. Kadar benzaldehida yang dihasilkan dengan katalis ZnFe2O4 tersubstitusi Cu 20% lebih tinggi dibandingkan dengan katalis ZnFe2O4 yang tidak tersubstitusi dan yang tersubstitusi Cu 60 dan 80%. Hal tersebut menunjukkan bahwa katalis ZnFe2O4 tersubstitusi Cu 20% memiliki kinerja yang lebih baik dalam oksidasi benzil alkohol menjadi benzaldehida dengan kadar benzaldehida 8.763%.
Keyword: Benzil alkohol, katalis, oksidasi, ZnFe2O4