Judul: In vitro analysis of biphasic calcium phosphate and hydroxyapatite as bone implants
Abstrak: The minimum requirement of synthetic biomaterial is must be biocompatible. Biocompatibility means that material is nontoxic and able to interact with the host cells. The analysis of 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide (MTT) assay was used to detect toxicity. Interaction between cells and bone implants were characterized by Scanning Electron Microscopy (SEM). Previously, hydroxyapatite is well known as biocompatible implantable materials. But, the dense hydroxyapatite is almost non-resorbable when used as bone implant. In the other hand, the porous β-tricalcium phosphate (TCP) displays affinity for high speed biological degradation. TCP was later identified as Biphasic Calcium Phosphate (BCP) consisting of hydroxyapatite (HA) and tricalcium phosphate (β-TCP).
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Judul: Karakterisasi Biphasic Calcium Phosphate Sebelum dan Sesudah Diimplan pada Domba
Abstrak: Biphasic Calcium Phosphate is a mixture of apatite substance that consists of HA and β- TCP. Characteristic of BCP is bioresorbable, biocompatible and bioactive for bone regeneration in the forming and developing of cells around the tissue. Synthesis of BCP is made by mechanical method. BCP implanted into sheep’s right tibia bone, while the left tibia bone used as control. Nine sheep in this research divided into three groups. Each group has characterized the implant on the first, second, and third month after the surgery. XRD analysis of BCP before implantation shows that chitosan addition changes the BCP’s intensity and ratio. The BCP that is used in this research is 75.92% HA and 24.08% β- TCP. FTIR and SEM-EDX characterization after implantation shows that the sample has interacted with body. FTIR characterization presences CO3, CH, and NH bending, while SEM EDX characterization presences the C unsure. Ca/P ratio showed that is not 1.33 to 1.67 on SEM-EDX characterization. In conclusion, that BCP can use as bone implant because it shows the biocompatible and bioactive characteristic after it implanted in sheep for three months. The Vickers Test shows that one month implanted bone has the most hardness one.
Keyword: in vivo, implant, HA

Judul: Kontribusi pariwisata bahari pantai Pangandaran terhadap kesempatan kerja dan pendapatan keluarga nelayan jaring sirang Desa Pangandaran, Kecamatan Pangandaran, Kabupaten Ciamis, Jawa Barat
Abstrak: Sumberdaya alam pesisir dapat dimanfaatkan untuk kegiatan usaha diantaranya yaitu sektor perikanan tangkap dan sektor pariwisata. Kawasan Pantai Pangandaran memiliki potensi untuk dilakukannya kegiatan usaha tersebut. Kegiatan sektor perikanan tangkap dan sektor pariwisata di Desa Pangandaran dapat dirasakan oleh keluarga nelayan pemilik jaring sirang. Penelitian ini bertujuan untuk mengetahui jumlah kesempatan kerja sektor pariwisata yang dimasuki oleh keluarga nelayan pemilik jaring sirang, melihat curahan waktu kerja keluarga nelayan pemilik jaring sirang untuk kegiatan usaha dan untuk mengetahui kontribusi kegiatan usaha sektor pariwisata terhadap pendapatan keluarga nelayan pemilik jaring sirang. Hasil penelitian ini menunjukan bahwa jenis usaha yang dimasuki oleh keluarga responden terdiri dari: penyewaan perahu, penyewaan pondokan, pedagang ikan asin, pelayan warung makan, dan penjual makanan. Curahan waktu kerja rata-rata untuk sektor perikanan sebesar 40 jam per minggu dan sektor pariwisata sebesar 35,67 jam per minggu yang sebagian besar banyak dilakukan oleh kepala keluarga. Kontribusi sektor pariwisata sebesar 9,25% terhadap pendapatan keluarga. Kegiatan usaha sektor pariwisata belum dioptimalkan, sehingga setiap anggota keluarga diharapkan berperan aktif dalam kegiatan usaha untuk meningkatkan pendapatan keluarga.
Keyword: pariwisata