Judul: Teknik Penyiapan Lahan oleh Masyarakat Sekitar Hutan Taman Nasional Way Kambas Provinsi Lampung.
Abstrak: Way Kambas National Park (TNWK) is the conservation area in the form of a national park located at Lampung Province. One of the problems experienced in TNWK is a forest fire that occurred. The fire seems to be triggered by land clearing activities conducted by community in TNWK. The fire may affect environmental condition as well as economic and social condition. The impact of fire will not only resulted in losses in the field of the environment, but also have an impact in the field of economic and social. There are two models of land preparation conducted by the District community in Rajabasa Lama, namely slash and burn technique and zero burning technique. Both land preparation with slash and burn technique and zero burning technique having its implementation each stage. According to financial assessment of cost efficiency analysis by counting Benefit Cost Ratio (BCR), the results that preparation of land with zero burning technique more efficient than slash and burn technique to the value of each BCR respectively 2.45 and 2.24.
Keyword: Way Kambas National Park, preparation of land technique

Judul: Pemetaan Kerawanan Kebakaran Hutan Di Taman Nasional Way Kambas
Abstrak: Taman Nasional Way Kambas (TNWK) selalu mengalami kebakaran hutan, terutama pada musim kemarau. Diperlukan dukungan dalam upaya mitigasi dan tindakan berdasarkan sistem peringatan dini. Sistem informasi geografis dan penginderaan jauh dapat diaplikasikan dalam mengembangkan peta kerawanan kebakaran untuk mendukung hal tersebut. Beberapa metode telah dirumuskan, tetapi akurasinya dipertanyakan apabila diaplikasikan pada lokasi yang berbeda terkait dengan keberagaman kondisi lokal. Penelitian bertujuan menentukan formula pemetaan kerawanan kebakaran hutan di TNWK. Variabel kebakaran hutan dibagi menjadi faktor alam dan faktor manusia. Faktor alam terdiri dari tutupan lahan, indeks vegetasi, indeks kelembaban, dan suhu permukaan. Faktor manusia terdiri dari jarak dari aksesibilitas dan pusat aktivitas masyarakat. Skoring dan pembobotan dilakukan. Dua kasus pembobotan diuji, faktor manusia dan faktor alam diberi bobot 0.9 dan 0.1, kemudian sebaliknya. Berdasarkan nilai agregat peta hasil tumpang susun, kerawanan kebakaran hutan dikelompokkan ke dalam tingkat tinggi, sedang, atau rendah. Evaluasi peta kerawanan dilakukan dengan menggunakan titik kejadian kebakaran. Formula kasus kedua lebih akurat dan dapat diterima. Sebesar 42.57% dari daerah TNWK memiliki tingkat kerawanan tinggi, 47.83% sedang, dan 9.59% rendah. Hal tersebut berarti faktor alam (ketersediaan bahan bakaran) memiliki peran penting memicu terjadinya kebakaran di TNWK.
Keyword: kebakaran hutan, kerawanan, penginderaan jauh, sistem informasi geografis, Taman Nasional Way Kambas

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
Keyword: