Judul: Studi Morfometrik Perna Viridis Linnaeus 1758 di Muara Angke dan Pelabuhanratu
Abstrak: The water in North Jakarta is polluted water. This pollution affect the life of biotic in the water. Green mussel (Perna viridis) is one species that can live in that polluted water. Environment affect green mussel’s growth. The objective of present study is to compare the growth pattern and morphometric of Perna viridis in polluted area (Muara Angke) and less polluted area (Pelabuhanratu). This study used graphic analyse method to see the connection between each parameter. The results of this study proves there is morphometric difference in shell length with average for Muara Angke and Pelabuhanratu with value 54.14 mm and 49.94 mm, shell width with average for Muara Angke and Pelabuhanratu with value 25.86 mm and 24.77 mm , shell height with average for Muara Angke and Pelabuhanratu with value 17.5 mm and 14.74 mm , shell weight with average for Muara Angke and Pelabuhanratu with value 4.78 g and 3.52 g , shell length and shell weight ratio with average for Muara Angke and Pelabuhanratu with value 13.28 and 15.41 , shell length and shell width ratio with average for Muara Angke and Pelabuhanratu with value 2.11 and 2.02 , shell length and shell height ratio with average for Muara Angke and Pelabuhanratu with value 3.33 and 3.4, shell width and shell height ratio with average for Muara Angke and Pelabuhanratu with value 1.59 and 1.7, and condition index of Perna viridis with average for Muara Angke and Pelabuhanratu with value 12.14 and 12.98.
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Judul: Filogeografi Kerang Hijau (Perna viridis) di Indonesia dan Kaitannya dengan Jalur Lintas Pelayaran.
Abstrak: Green Mussel (Perna viridis) has the potential to spread geographycally through larval dispersal or ballast water from boat, which potentially to be invansive in other geographical region. The research aimed to analize genetic connectivity and genetic diversity of Green Mussel (Perna viridis) in Indonesia and its relation to cross shipping lanes, using genetic marker of mitochondrial Cytochrom oxidase 1 (CO1) locus. Farthest genetic distances was observed in the population of Makassar and Muara Kamal (D = 0.008), and the nearest was observed between population of Teluk Lada and Ambon and between population of Teluk Lada and Palabuhan Ratu (D = 0.002). A little genetic differentiation was observed between Makassar and Palabuhan ratu (Fst = 0.05). A large genetic differentiation was observed between Ambon and Teluk Lada (Fst = 0.90) and between Ambon and Palabuhan Ratu (Fst = 0.90). Genetic diversity shown by haplotype diversity in five locations was observed high. Highest haplotype diversity was observed in populations of Muara Kamal (Hd = 0.27), followed by the population of Palabuhan Ratu and Teluk Lada (Hd = 0.22 and Hd = 0.18), and lowest haplotype was observed in population of Ambon and Makassar (Hd = 0.13). Close genetic relationship between five populations most likely associated with cross shipping lanes in Indonesia as a medium for the spread of P. viridis.
Keyword: Perna viridis, DNA Barcoding, genetic diversity, connectivity

Judul: Sintesis Superkonduktor YBCO dengan Metode Evaporasi dan Karakterisasinya
Abstrak: Telah berhasil dibuat pelet superkonduktor YBCO-123 dengan metode evaporasi dengan menghasilkan Tc = 100 K. Sintesis dilakukan dengan mencampur garam-garam nitrat Y(NO3)2, Ba(NO3), Cu(NO3)2 di dalam pelarut H2O pada suhu 150 oC. Setelah melalui proses pirolisis pada 350 oC selama 1 jam, prekursor dikalsinasi pada 900 oC selama 4 jam kemudian serbuk dikompaksi dengan tekanan hidrolik 5 ton untuk membentuk pelet dengan diameter 1,5 cm dan tebal 0,24 mm. Sintering dilakukan pada suhu 940 oC selama 20 jam. Efek meissner menunjukkan fenomena levitasi pada temperatur sekitar 80 K. Hal ini menunjukkan fasa superkonduktor telah terbentuk. Data XRD memberi mengkonfirmasi bahwa fasa kristal 123 telah terbentuk. Nilai konduktivitas didapat dari hasil pengukuran dengan LCR pada temperatur 300 K sebesar 4 x 10-5 S/cm. Pada penurunan temperatur dari 100 K ke 80 K terjadi kenaikan nilai konduktansi yang tajam dari 4.2 x 10-4 S/cm ke nilai 1.309 x 10-1 S/cm.
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