Judul: Distribution of Temperature and Seasonal Catch of Dominants Fish in Sunda Strait
Abstrak: Perairan di Indonesia memiliki sumberdaya yang melimpah, salah satunya perairan Selat Sunda. Sumberdaya yang melimpah akan bergantung terhadap musim dan besar effort yang dikeluarkan untuk melakukan penangkapan di perairan. Tujuan dari penelitian ini adalah menganalisis hubungan suhu dan produksi ikan dengan pendekatan analisis indeks musim terhadap tiga jenis ikan dominan, yaitu ikan selar bentong (Selar crumenophthalmus), ikan tongkol (Euthynnus affinis), dan cumi-cumi (Loligo sp.) di perairan Selat Sunda. Data yang digunakan berupa data primer dan sekunder dengan metode menggunakan analisis indeks musim penangkapan. Hasil penelitian menunjukkan bahwa korelasi antara variabelsuhu permukaan laut dan hasil tangkapan pada tiga jenis ikan di perairan Selat Sunda berada di bawah 0,5. Hasil tersebut menandakan bahwa suhu permukaan laut tidak mempengaruhi langsung hasil tangkapan nelayan.
Keyword: catch of fish, catch season, sea surface temperature, Sunda Strait

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: Synthesis of Chicken Eggshells-Based β-Tricalcium Phosphate Bioceramics and Their Biocompatibility Test as A Tooth Filler
Abstrak: Preservation of alveolar bone following tooth extraction is an important step in dental practices before dental implant placement. This study reported synthesis of β-Tricalcium Phosphate (β-TCP) bioceramics and its biocompatibility test as a tooth filler to maintain the desired alveolar ridge dimension and stimulate the bone healing processes in the area of tooth loss. β-TCP bioceramics was resulted directly from precipitation of calcinated chicken eggshells as calcium source and phosphoric acid. The corresponding β-TCP was mixed with chitosan 2% to get β-TCP pellet for biocompatibility testing. Biocompatibility testing of β-TCP on lower incisor was performed in rabbits and sheep as animal model. In this study, the x-ray diffraction (XRD) profiles showed that 1000 oC calcinated chicken eggshells correspond to calcium oxide (CaO). There was also transformation phase of CaO into Ca(OH)2 observed after more than three months stored. The XRD profiles proved that obtained β-TCP bioceramics by precipitation has the same pattern with that of reference data base and commercial β-TCP. Fourier transform infrared (FTIR) spectra were completely consistent with the result of crystallization processes observed by XRD measurements. Moreover, the purity of the product shown by the atomic absorption spectroscopy (AAS) resulted in Ca/P ratio of 1.48 which was closed to that of standard β-TCP ceramics. The repeatable XRD peaks patterns and FTIR spectra obviously showed the sample reproducibility. Sheep’s alveolar socket that is filled with the corresponding β-TCP demonstrated the expected results. The x-ray radiograph of sheep’s jaw indicated no change on mesio-distal of the edentulous area. Moreover, the histological results were completely consistent with the x-ray radiograph and macroscopic result which is proved by the formation of new bone. In the contrary with sheep’s result, histological results showed no tooth growth on rabbit proved by the presence of lipid and collagen on the extraction site. This result did not correspond to the x-ray radiograph and macroscopic results that demonstrated the tooth growth and erupted tooth. It is clear that the corresponding β-TCP could minimize the bone loss and maintain the dimension of alveolar ridge.
Keyword: β-tricalcium phosphate, chicken eggshells, rabbit, sheep, tooth filler