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: Characterization of Biphasic Calcium Phosphate with Ratio of 70/30 Before and After Implanted into Sheep’s Bone
Abstrak: Nowadays, biphasic calcium phosphate is used for biomaterial to cure bone damage. This study focuses only on mixing ratio of 70% mass of hydroxyapatite and 30% mass of tricalcium phosphate with chitosan and acetic acid as the hardening. Pure HA had done by wet precipitation in sintering process at temperature of 900 oC while β-TCP is at temperature of 1000 oC. Mechanical method of BCP is proven to be a non toxic material and could absorb by the mineral body. Implanted BCP was characterized with XRD, FTIR, SEM-EDS and bone characterization with Vickers Hardness. In XRD analysis, the result is adding chitosan makes BCP less accuracy of pure HA and β-TCP. FTIR shows composition of BCP sample with HA, TCP, H2O, AKB, and N-H bending. SEMEDS releases ratio Ca/P of implant in post operation has irregularity caused by interaction with bone that supported by Vickers Hardness number. HV for 1 month of post operation have larger number for both implanted and control bone.
Keyword: β-TCP, HA, BCP

Judul: Persepsi Masyarakat Nelayan terhadap Pendidikan Formal (Kasus di Pantai Pamayang Desa Cikawungading, Kecamatan Cipatujah, Kabupaten Tasikmalaya, Propinsi Jawa Barat)
Abstrak: Masyarakat nelayan yang dijadikan responden dalam penelitian ini adalah termasuk nelayan harian dengan alat penangkapan ikan sederhana yang bekerja selama 10-20 jam per hari berada di laut. Jika dilihat dari segi kehidupan, perumahan, pendidikan dan penguasaan alat tangkap sebagian besar nelayan tergolong miskin. Kemiskinan tersebut merupakan pengaruh kumulatif dari tingkat pendidikan yang rendah serta cara berpikir yang sederhana. Selain itu, kondisi sumberdaya alam yang dihadapkan pada ketidakpastian yang tinggi baik ketidakpstian harga maupun produksi. Kemiskinan yang menghimpit nelayan mengakibatkan mereka sulit untuk memenuhi kebutuhan dasar apalagi untuk memenuhi kebutuhan pendidikan anak terutama pendidikan formal.
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