Judul: Pengelolaan Habitat dan Satwa Penyu Laut (Habitat Management for Sea Turtles)
Abstrak: The economic value of sea turtles, their eggs, meats and shells had caused intensive hunting in almost alI over the world. Current protection in Indonesia on sea turtles is still limited on leatherback turtle (Dermochelys coriacea), olive ridley (Lepidochelys olivacea) and loggerhead (Caretta caretta), three of the five species existing in Indonesia. Attempts to recover their populations had been carried out in Indonesg, comprising : nesting beaches protection, artiflcial incubation and rearing their juveds in the beaches before releasing them to the sea. The artificial incubation had been successful.
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Judul: Manajemen Pelestarian Penyu Sisik di Taman Nasional Kepulauan Seribu dan Taman Nasional Karimunjawa
Abstrak: Hawksbills turtle are one type of rare and protected animals found in the waters of Indonesia because it population had sharply decreased. Conservation efforts that need to be performed such as arranging a turtle captive breeding program in Kepulauan Seribu National Park and Karimunjawa National Park which aimed at keeping the turtles population. This research aims to measure the success of hawksbills preservation management, identify the technical aspects of hatching and maintenance management, and find out the utilization that can be performed based on perception of visitors. The results showed that success rate in TNKpS an TNKJ are in the low category, which are valued on 52.5% and 37.5%. Technical aspects of turtle preservation management consist of hatching and maintenance management. The utilization that can be made against the turtles preservation was limited tourism which emphasize on education aspect and minimize physical contact with turtles.
Keyword: TNKJ, TNKpS, maintenance management, hawksbill turtle, hatching management

Judul: Studi Spektroskopi Impedansi Glukosa Menggunakan Larutan SBF (Simulated Body Fluid)
Abstrak: Penelitian ini melakukan studi spektroskopi impedansi dari glukosa di dalam SBF dengan variasi konsentrasi. Variasi konsentrasi glukosa yang digunakan adalah 0, 30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330, 360, dan 390 mg·dL-1 dan frekuensi masukan spektroskopi sebesar 5 x 10-6 sampai 5 MHz, sedangkan elektroda yang digunakan adalah sensor interdigit. Hasil penelitian menunjukkan, nilai impedansi sensor semakin meningkat seiring dengan meningkatnya frekuensi sinyal listrik yang dilewatkan, kenaikan nilai impedansi lebih terlihat signifikan pada frekuensi ≤ 1 MHz. Meningkatnya impedansi terhadap frekuensi lebih disebabkan oleh kompenen reaktansi dibandingkan komponen resistansi pada sensor. Hasil pengujian koefisien korelasi untuk setiap frekuensi terhadap variasi konsentrasi glukosa menunjukkan, pada frekuensi 0.316 MHz koefisien korelasinya terbesar yaitu 0.746. Frekuensi tersebut merupakan frekuensi dengan linearitas impedansi sensor terhadap variasi konsentrasi glukosa paling baik. P value (0.12) pada uji Kruskal Wallis lebih besar dibandingkan dengan batas kritis penelitian (0.05). Setelah diterapkan filter Kalman, sebaran data menjadi lebih baik dan nilai impedansi memiliki perbedaan bermakna untuk masing – masing konsentrasi.
Keyword: frekuensi, konsentrasi glukosa, spektroskopi impedansi