Judul: Sistem Peringatan Dini (Early Warning System) dalam Upaya Pencegahan Kebakaran Hutan (Studi Kasus di KPH Madiun Perum Perhutani Unit II Jawa Timur
Abstrak: Negative impact and losses from of forest fires lead to a need of fire preventionfrom earlier i.e. time within determination of fire prevention. Human factors are the main cause of the forest fires in Indonesia. Therefore determining fire fire prone areas could be done by using variables that contribute to forest fires, such as the accessibility towards the forest, forest distance between settlements, and potential conflict areas. Prone areas to forest fires could be determained by how society's perception on the existence of KPH Madiun and Early Warning System. This study is done by analyzing the data accessibility and the level of perception, to determine prone areas to forest fires. Analyze on forest prone areas then use to determine the risk of fires on the area; high level, moderate, or low level. The results showed that from 120 respondents in four villages the low level fire risk is found in Kaliabu and Kebonagung Villages. While, high and medium level is found Mojorayung and Sobrah Villages.
Keyword: early warning system, determination prone areas, forest fires

Judul: Sistem Peringatan Dini dalam Kegiatan Pencegahan Kebakaran Hutan di KPH Kuningan, Jawa Barat
Abstrak: Kebakaran hutan memberikan dampak negatif yang cukup besar oleh karena itu diperlukan suatu tindakan pencegahan sejak awal. Salah satu kegiatan pencegahannya yaitu menentukan daerah rawan kebakaran hutan. Tingkat persepsi masyarakat berdasarkan penelitian di beberapa desa di KPH Kuningan terhadap sistem peringatan dini tergolong tinggi untuk Desa Cihanjaro, tergolong sedang untuk Desa Simpayjaya dan tergolong rendah untuk Desa Kawungsari. Menurut aksesbilitasnya, Desa Kawungsari memiliki akses paling tinggi dengan hutan. Ada beberapa variabel penyebab kebakaran hutan antara lain : jarak antara pemukiman penduduk dengan hutan, aksesbilitas menuju hutan, dan potensi daerah terjadi konflik. Penentuan daerah rawan kebakaran hutan dapat dilihat melalui tingkat persepsi masyarakat terhadap keberadaan KPH Kuningan dan sistem peringatan dini dalam kegiatan pencegahan kebakaran hutan.
Keyword: Forest fires, Early warning system, Determination prone areas, Silviculture, Warning system, Forset fire preventive action

Judul: Optimization of Alginate-Chitosan Microcapsules Formation for Leydig Cells Encapsulation
Abstrak: Hypogonadism is a clinical condition characterized by low concentrations of testosterone. It is caused by malfunction of Leydig cells in producing testosterone. Encapsulation method will protect the transplanted cells from the immune system rejection. The aims of this study was to optimize the formation of microcapsules for Leydig cells encapsulation. The microcapsules were made of alginate and chitosan as the first and the second coating agents, respectively. The result showed that the minimum concentration of alginate was 1.5% (w/v) with a viscosity of 33.8 cPs, resulted spherical microcapsules with diameters of 230-270 µm. The optimum concentration of chitosan as the second coating agent was 0.5% (w/v), resulted spherical microcapsule with mechanical stability in 4 hours. Leydig cells can be trapped inside the capsule with a density that proportional with concentration of cells used in the encapsulation.
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