Judul: Distribusi Spasial Klorofil-a, Produktivitas Primer, dan TSS di Teluk Jakarta dengan Menggunakan Citra Satelit Landsat-ETM Tahun 2002-2011
Abstrak: Stingray (Neotrygon kuhlii) is one of the demersal fish that have economic value which landed in PPP Labuan, Banten and important ecological values in the Sunda Strait. The study is done at PPP Labuan on Juny-October 2013. Purpose of this study is to examine stock stingray (Neotrygon kuhlii) in the Sunda Strait to determine the fish alternative management more appropriate and sustainble. The amount of observed fish was 101 individuals with male sex ratio of 1,0:1,2 to the female. The spawning seasons seems to be occurred in Juni-Juli. Stingray have allometric negative growth. Asymptotic length ( L∞ ) of ray was 1238 mm. Model Fox with optimum efforts to 329 trip per year and MSY 552 ton per year. The mean size of female and male reach sexual maturity was 599 mm and 511 mm, respectively exploitation rate of the stingray more than 50%, meaning that this fish has an over fishing and it seem has a growth overfishing due to caught fishes are still young more than 50%.
Keyword: Sunda Strait, Growth, Neotrygon kuhlii, The Rate Of Exploitation, Stock ssessment, Bogor Agricultural University (IPB)

Judul: The Potential Fishing Area in the Sunda Strait Based on the Intensity of Fishing
Abstrak: Perairan Selat Sunda memiliki potensi sumberdaya perikanan yang tinggi dan menjadi salah satu lokasi kegiatan perikanan tangkap baik ikan pelagis maupun demersal. Tujuan dari penelitian ini adalah menganalisis daerah potensial penangkapan ikan pada perairan Selat Sunda dengan melakukan pemetaan daerah penangkapan eksisting di Selat Sunda, pendataan hasil tangkapan sebagai profil biologi perikanan, identifikasi musim penangkapan dan sebaran oseanografi. Analisis data terdiri atas pemetaan jalur penangkapan ikan nelayan, jenis dan ukuran ikan tangkapan, ukuran pertama kali matang gonad, pola musim penangkapan, suhu permukaan laut dan klorofil-a. Penelitian dilakukan pada bulan September sampai Desember 2019 dengan lokasi pengambilan data di wilayah penangkapan ikan Selat Sunda serta PPP Labuan dan PPP Lempasing. Umumnya ikan-ikan yang ditangkap oleh para nelayan di Selat Sunda cenderung berasal dari daerah disekitar pesisir, pulau-pulau kecil serta teluk. Hasil dari penelitian menunjukkan bahwa terdapat wilayah-wilayah potensial lainnya berdasarkan rentang nilai rata-rata suhu permukaan laut dan klorofil-a pada jalur penangkapan yang dilalui karena memiliki hubungan dengan hasil tangkapan ikan., Sunda Strait has high potential fishery resources and locations for fishing activities for both pelagic and demersal fish. This research aims to spatial analyse the waters of the Sunda Strait by collecting data on fish capture, identifying the changes of capture fish pattern area, and mapping the potential fishing areas. The data analysis consists of the type and size of the captured fish, first size mature gonad and capture, fishing season patterns and the sea surface temperature. This research was conducted from September to December 2019 with data collection in PPP Labuan and PPP Lempasing. Usually, fishermen’s the capture fish by fisherman in the Sunda Strait is from several fishing areas, including Lada Bay, Panaitan Island, Krakatau Island, Sebesi Island, Sebuku Island, and Legundi Island. The result shows that high fishing efforts occurred in areas close to the coast, small islands, and bays in the Sunda Strait. Fishery Management efforts must be created by considering sustainability for the long term.
Keyword: Cartography, Chlorophyll-a, Potential fishing area, Sunda Strait, Sea surface temperature

Judul: Sintesis BaTiO3 dari Campuran Ba(OH)2 dan TiO2 dengan Tambahan PbO
Abstrak: Piezoelectric material can generate electric field in response to applied mechanical stress. Conversely, they can stretch and contract in response to an electric field. This material can be used for many applications such as transducer, microphone, ultrasound, and pressure gauge. Barium titanate is a ferroelectric material with piezoelectric properties that can be synthesized easily. The aim of this study is to synthesis barium titanate from mixture of Ba(OH)2 and TiO2, also observe its optimum temperature and the effect of PbO addition. The method of synthesis was solid-state reaction and sol-gel method, then the products were characterized with x-ray diffraction (XRD). Based on XRD analysis, the optimum temperature for both methods was 800°C. Addition of PbO to BaTiO3 in the solid-state reaction formed a compound with formula of Ba1-xPbxTiO3. The addition has changed diffraction pattern peak at 2θ and strengthened its tetragonal structure. The best result was obtained at x of 0.5 which will form a compound of Ba0.5Pb0.5TiO3.
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