Judul: Analisis Hubungan Jumlah Kunjungan Kapal, Produksi, dan Harga Ikan di Pelabuhan Perikanan Nusantara Brondong
Abstrak: As one of the factors that influence the dynamics of capture fisheries, the influence of market activities conditions to the dynamics of fishing is still rarely studied. Based on this reason, this study will be conducted to analyze the influence of market activities particularly price fluctuations to the dynamics of capture fisheries and vise versa. To answer these objectives the study was conducted in Brondong Fishing Port. The data was collected by purposive sampling. The result of this study show that the fish distribution between producer and consumer was very simple. Fish landing actually didn’t affect to all fish price significantly. For red snapper and big eye, the number of fish landing negativelly affect to fish price, it mean if fish landing increase the fish price will decrease and vise versa. On the other hand the fish landing of scads, false travelly and yellowtail didn’t affect to fish price significantly. The other result of this study also show that fish price generally didn’t affect to fishing trip.
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Judul: Study of Fish Auction and Fishermen Squid Nets Revenue in PPI Muara Angke Jakarta
Abstrak: Pelelangan ikan merupakan salah satu aktivitas ekonomi di pelabuhan perikanan yang memberikan keuntungan bagi penjual dan pembeli. Pelelangan ikan berhubungan dengan pendapatan nelayan karena proses pelelangan akan menghasilkan harga jual/beli yang layak di TPI. Tujuan penelitian ini adalah mengetahui bentuk hubungan kuantitatif antara pelelangan ikan dan pendapatan nelayan jaring cumi-cumi dan mengetahui persepsi nelayan terhadap pelelangan ikan dan di PPI Muara Angke.. Dengan menggunakan analisis regresi dan korelasi linear sederhana didapatkan bentuk hubungan antara pendapatan bersih nakhoda per trip dan nilai penjualan per trip adalah Y=0,0833X-3.830.119 dengan nilai r=0,83, pendapatan bersih nakhoda per hari dan nilai penjualan per hari Y=0,1227X-245.858 dengan nilai r=0,91, dan pendapatan bersih nakhoda per trip dan rata-rata harga untuk satu trip penangkapan dengan nilai r=0,31. Hasil penelitian menunjukkan bahwa persepsi sebagian besar nelayan menjual hasil tangkapan melalui pelelangan ikan adalah karena nelayan tidak perlu lagi mencari-cari pembeli (34,4%) dan nelayan mendapatkan kepastian akan adanya transaksi (28,1%).
Keyword: Fish auction, Fishermen revenue, PPI Muara Angke, Squid nets, Fishing ports, Squid fishing, Regression analysis, Linear correlation, Net income

Judul: Katalis Eterifikasi Gliserol Berbasis Poli–(asam stirena sulfonat) dari Limbah Styrofoam.
Abstrak: Styrofoam waste can be converted to poly–(sulfonate styrene acid) (PSSA) that can be used as catalyst. The objective of this research is to get PSSA that can catalyze the etherification of glycerol and benzyl alcohol. The styrofoam waste was converted to PSSA by reacting with H2SO4 98% (as sulfonation agent) and P2O5 (as sulfonation catalyst) at 40 °C for 6 hours. Characterizations of PSSA included functional groups, sulfonation levels, water swelling, and thermal stability. The yield of PSSA was 40-55%. The success of sulfonated polystyrene was shown by –SO3H group absorption at 1157.29 cm-1. Etherification of glycerol and benzyl alcohol using PSSA catalyst was conducted at 110 °C for 12 hours. The conversion in producing mono–benzyl ether glycerol was 8.10%, 1,3–dibenzyletherglycerol 2.60%, and dibenzyl ether 9.80%. Therefore, the PSSA can be used as etherification catalyst.
Keyword: benzyl alcohol, etherification, glycerol, polystyrene, PSSA