Judul: Model Dinamika Karbon TPTI dan TPTJ di IUPHHK-HA PT Sari Bumi Kusuma Kalimantan Tengah
Abstrak: The main issue of climate change was discussed by forestry companies, which caused by the increasing of green house gas emissions in the atmosphere. The carbon storage dynamics in PT. Sari Bumi Kusuma was calculated to determine the amount of carbon dioxide from the atmosphere that absorbed by the forest. The aim of this research is to create a model of carbon storage dynamics in PT. Sari Bumi Kusuma. Model development method that used in this study is the systems approach. This system approach can explain carbon storage dynamics of TPTI and TPTJ system with SILIN techniques. TPTI carbon storage is 115.49 ton/ha and TPTJ SILIN techniques carbon storage is 251.36 ton/ha. The current carbon storage potential amount in PT. Sari Bumi Kusuma is 26,493,223.51 ton of carbon. The best scenario that can increase carbon storage in PT. Sari Bumi Kusuma is by applying the TPTJ sylviculture systems with SILIN techniques. Implementation of this scenario can increase the carbon storage up to 30,064,528.63 ton of carbon.
Keyword: PT. Sari Bumi Kusuma, carbon storage, climate change

Judul: Model Dinamika Karbon Sistem TPTI dan TPTJ di PT Sarmiento Parakantja Timber Kalimantan Tengah.
Abstrak: Isu tentang perubahan iklim akibat meningkatnya emisi di atmosfer telah menjadi isu yang mendunia. Pada tahun 2010, sektor LULUCF menyumbang sebesar 46% emisi Indonesia. Oleh karena itu pengelolaan hutan lestari perlu dilakukan dengan baik. Tujuan penelitian ini adalah membuat model dinamika pengelolaan hutan pada sistem silvikultur TPTI dan TPTJ teknik Silin untuk mendapatkan sekenario-sekenario pengelolaan hutan yang baik. Metode pengembangan model yang digunakan adalah dengan pendekatan sistem. Berdasarkan hasil pemodelan dinamika sistem, didapatkan rataan simpanan karbon tegakan pada sistem TPTI sebesar 131.70 tonC/ha/tahun dan rataan simpanan karbon tegakan pada sistem TPTJ teknik Silin sebesar 84.95 tonC/ha/tahun. Terdapat 12 skenario yang dibentuk berdasarkan sistem silvikultur, daur dan intensitas tebangnya. Skenario yang dipilih menjadi skenario terbaik yaitu skenario 10 (sistem silvikultur TPTJ teknik Silin dengan daur 30 tahun dan intensitas tebang 100%) dengan nilai rataan simpanan karbon tegakan sebesar 95.31 tonC/ha/tahun. Hasil ini masih dibawah sistem TPTI, namun pada tahun ke-27 skenario ini mampu meningkatkan simpanan karbonnya hingga 184 tonC/ha/tahun melebihi rataan simpanan karbon nasional.
Keyword: Stok karbon, sistem silvikultur TPTI, TPTJ

Judul: Pengujian Virus Newcastle Disease Gen VII Isolat Lapang Sebagai Virus Standar Pada Uji Tantang Vaksin
Abstrak: This study was conducted to determine the standard of Newcastle disease virus Gene VII field isolate as a virus challenge to vaccine test. A virus suspension that has previously been tested by HA test then titrated with EID50 using 30 Specific Pathogen Free (SPF) of 10 day old chicken embryonated eggs. In addition, chicken lethal dose50 (CLD50) test were used to determine the virus titer that could cause 50% death of the chicken population. The CLD50 test was used 25 day-old-chickens (DOC) divided into 5 groups. The virus was diluted from 10-1 to 10-8. The 104 to 10-8 dilution of NDV was infected to every group of chicken via eyedrop and intranasal with 0.1 ml/chicken dosage. Haemagglutination test showed that the allantoic fluid were contain high titers of NDV is 512 HAU. The infective NDV that had been titrated by EID50 test showed the virus titers is 109 EID50/0.1 ml or 1010 EID50/ml and the virus titers of CLD50 test e.i 106.48 CLD50/0.1 ml or 107.48 CLD50/ml. These results can be concluded that the NDV Gene VII field isolates were most appropriate to be used as a standard virus to vaccine test
Keyword: Newcastle Disease Virus Gene VII, HA tes, EID50 test, CLD50 test