Judul: Penggunaan lahan di Pegunungan Watu Putih dan hubungannya dengan geomorfometri bentanglahan karst di Kabupaten Rembang
Abstrak: Karst memiliki fungsi yang sangat strategis, yaitu sebagai penyimpan air yang besar di bawah permukaan tanah. Mengingat besarnya manfaat karst tersebut, maka perlindungan terhadap wilayah karst sangat diperlukan. Dalam rangka pengelolaan sumberdaya lahan karst, penelitian-penelitian terkait karakteristik bentanglahan dan pemanfaatannya sangat diperlukan untuk mengetahui kesesuaian atau kondisi lingkungan aktual yang ada. Penelitian ini dilaksanakan di wilayah karst Pegunungan Watu Putih, Kabupaten Rembang, dengan tujuan mengetahui jenis dan persebaran penggunaan lahan, mengetahui karakteristik morfometri bentanglahan yang meliputi Topographic Roughness Index (TRI) dan Topographic Wetness Index (TWI), mengetahui hubungan antara penggunaan lahan dengan TRI dan TWI, dan rekomendasi pengelolaan lahan di Pegunungan Watu Putih. Hasil penelitian menunjukkan bahwa di daerah penelitian penggunaan lahan yang paling dominan adalah tegalan, yaitu sebesar 63.61%. Luasan TRI yang dominan adalah kelas agak halus (= kelas 2) seluas 42.88%, sedangkan untuk TWI yang dominan adalah kelas sedang (= kelas 3) yaitu sebesar 41.65%. Cekungan Air Tanah (CAT) Watu Putih terdapat di daerah penelitian yang merupakan wilayah konservasi, oleh karena itu CAT harus dilindungi dan dikelola untuk menjaga kelestariannya. Untuk itu di atas area CAT yang merupakan kawasan budidaya sebaiknya digunakan sebagai wilayah hutan produksi dan bukan sebagai lahan tegalan seperti sekarang ini; atau jika memungkinkan dapat dirubah sebagai kawasan lindung. Salah satu bentuk pengelolaan kawasan karst yang berwawasan konservasi untuk daerah penelitian adalah pengembangan ekowisata.
Keyword: karst, SAGA, TRI, TWI,, Watu Putih mountains

Judul: Potensi dan Pemanfaatan Jasa Lingkungan Kawasan Karst Gua Gudawang
Abstrak: Gudawang Cave Karst Area is one of the karst area that are located in Bogor. This karst area has the ecosystem service potential that aren’t maximally utilized. This happen because there's no information about what ecosystem service that owned by the manager. This condition leading to the need for identification ofecosystem service potential and its utilization by local community. Research was done at March to June 2013 through field observation, interview, and literature study. The result of this research indicated that from 10 identified cave all of them were natural habitat of wildlife as shown by 19 wildlife species that were discovered inside the cave. All of them were also potentialfor tourism because of the different characteristic in each caveidentified. As many as 8 from them are potential for carbon dioxide absorptionand water supply. Only 3 of all the identified cave that have beenmanaged as tourism object and only 1 of all the identified cave has been used as water supply for local community.
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Judul: In Vitro Development Of Pancreatic Beta Cells Of Rat (Rattus Norvegicus) In Culture Medium Supplemented By Black Seed (Nigella Sativa) Extract
Abstrak: Nigella sativa (black seed) is a medicinal plant that is widely used for treating various diseases, including diabetes mellitus. This study examined the proliferation and differentiation of pancreatic β cells of rats (Rattus norvegicus) after in vitro culture in medium supplemented by Nigella sativa extracts (NS). Pancreatic cells were isolated from five days old rat (Rattus norvegicus) and cultured in dulbecco modified eagle medium suplemented with Nigella sativa (NS) exstract (NS 0% [control], NS 1%, and NS 10% for treatment groups). The cell were incubated in 5 % CO2 incubator at 37 oC for seven days and observed cell population doubling time (PDT), percentage and diameter of Langerhans islets, and percentage of expression the β cell producing insulin in Langerhans islets after dithizone staining. The result showed that NS significantly (p < 0.05) decreased the population doubling time (4.66 ± 0.24, 3.98 ± 0.20, and 3.66 ± 0.21 days for NS 0%, NS 1%, and NS 10%, respectively), increased the percentage of Langerhans islets (6.00 ± 1.80, 14.33 ± 3.01, and 18.67 ± 1.25% for NS 0%, NS 1%, and NS 10%, respectively), increased the diameter of Langerhans islets (66.11 ± 2.09, 101.66 ± 0.83, and 142.77 ± 1.73 μm for NS 0%, NS 1%, and NS 10%, respectively), and increased the percentage of expression the β cell producing insulin (4.67 ± 0.57, 9.67 ± 2.08, and 17.33 ± 3.21% for NS 0%, NS 1%, and NS 10%, respectively). It was concluded that the supplementation of NS in culture medium can improve the proliferation and differentiation of pancreatic cells in vitro.
Keyword: development, in vitro culture, Nigella sativa, pancreatic β cells