Judul: Geographic Information System Application on Urban Forest Development in Bandung City
Abstrak: Bandung sebagai ibukota Jawa Barat merupakan salah satu kota metropolitan yang menghadapi masalah kepadatan penduduk. Hal ini menyebabkan meningkatnya jumlah konversi lahan dan penurunan ruang terbuka hijau di Bandung. Penelitian ini mengkaji kebijakan hutan kota, distribusi spasial hutan kota, serta metode merancang penentuan lokasi prioritas hutan kota dalam pengembangan hutan kota di Kota Bandung menggunakan GIS. Kebijakan kehutanan di Kota Bandung hutan kota terkait terdiri dari Kota Bandung Peraturan No.25 / 2009 dan Rencana Tata Ruang Kota Bandung. Berdasarkan analisis dari Landsat 8, luas hutan kota secara factual di wilayah Bandung dari 338,94 hektar (area kurang dari 10% dari Bandung), sehingga perlu diketahui lokasi yang sesuai untuk dikembangkan menjadi hutan kota. Metode ini merupakan overlay dari beberapa parameter: ketinggian, kemiringan, tutupan lahan, iklim, kepadatan penduduk, dan jarak dari protokol. Faktor-faktor yang menjadi parameter dalam menentukan prioritas lokasi hutan kota dianalisis menggunakan AHP (Analytical Hierarchy Process). Kecamatan yang perlu dikembangkan menjadi hutan kota (prioritas 1) di Bandung yaitu Mandalajati, Cibiru, dan Ujung Berung., Bandung as the capital city of West Java has been facing with massive land conversion leading to reduced of green open space, which in fact affect to the quality of environment. This study will examine current urban forest policy- Bandung City Regulation No. 25/2009 and Spatial Plan of Bandung City, spatial distribution of urban forest, and also to develop method to prioritize location for urban forest design in Bandung using GIS. Method used in this study was overlay of several parameters; altitude, slope, land cover, climate, population density, and the distance of the protocol road. Parameters measured were analyzed using AHP. Based on Landsat 8 analysis, the factual urban forest areas only cover 338.94 hectares (less than 10% area of Bandung), and thus it is necessary to locate the appropriate location for a well-designed urban forest development. Result shows that there was three scores indicating the rank prioritization as the 652,65 hectares for the first rank, 7336,65 hectares for the second rank and lastly 8733,61 hectares. It is concluded that the first priority to be developed for urban forest in Bandung was Mandalajati, Cibiru, and Ujung Berung that fall within the first rank.
Keyword: Urban forest, GIS, Spatial distribution, Climate, Natural resources and Environmental management

Judul: Economic Feasibility Analysis of Green Open Space  in Bandung City (Case Study: Babakan Siliwangi Urban Forest)
Abstrak: Kota Bandung sebagai ibu kota Provinsi Jawa Barat memiliki tingkat pertumbuhan ekonomi yang tinggi. Aktivitas ekonomi dan kepadatan penduduk memengaruhi pembangunan kawasan perkotaan. Pembangunan fisik wilayah Kota Bandung yang terus meningkat perlu diimbangi dengan pembangunan lingkungan dalam wujud Ruang Terbuka Hijau (RTH). Kota Bandung saat ini baru memiliki total luas RTH sebesar 12,25% dari target minimal total luas RTH yang ditetapkan Undang-Undang No. 26 Tahun 2007 sebesar 30% dari luas wilayahnya. Hutan Kota Babakan Siliwangi merupakan RTH yang berpotensi mengalami konversi lahan menjadi lahan terbangun karena berada di daerah sekitar kawasan wisata yang menuju pusat kota. Penelitian ini memiliki tujuan untuk (1) mengidentifikasi persepsi pengunjung terkait keberadaan Hutan Kota Babakan Siliwangi, (2) mengestimasi nilai ekonomi keberadaan dari Hutan Kota Babakan Siliwangi, dan (3) mengidentifikasi kelayakan ekonomi dari Hutan Kota Babakan Siliwangi sebagai RTH di Kota Bandung. Hasil penelitian menunjukan bahwa persepsi pengunjung terhadap keberadaan Hutan Kota Babakan Siliwangi menggunakan skala likert sangat baik khususnya terhadap fasilitas, tumbuhan vegetasi, dan desain hutan kota. Nilai keberadaan dari Hutan Kota Babakan Siliwangi berdasarkan total kesediaan membayar (WTP) sebesar Rp14.499.910.722,00/tahun. Hasil analisis kelayakan ekonomi Hutan Kota Babakan Siliwangi dengan manfaat sosial sebagai penyerap karbon dan nilai keberadaan sudah memenuhi kriteria kelayakan ekonomi artinya hutan kota mampu meningkatkan kesejahteraan sosial., Bandung City as the capital of West Java Province has a high level of economic growth. Economic activity and population density affect the development of urban areas. The physical development of the Bandung City area which continues to increase needs to be balanced with environmental development in the form of Green Open Space (RTH). The city of Bandung currently only has a total green open space area of 12.25% of the minimum target for the total green open space stipulated in Law No. 26 of 2007 amounting to 30% of the total area. Babakan Siliwangi Urban Forest is an open green space that has the potential to experience land conversion into built-up land because it is located in the area around the tourist area that goes to the city center. This study aims to (1) identify visitor perceptions regarding the existence of the Babakan Siliwangi Urban Forest, (2) estimate the economic value of the existence of the Babakan Siliwangi Urban Forest, and (3) identify the economic feasibility of the Babakan Siliwangi Urban Forest as green open space in the city of Bandung. The results showed that visitors' perceptions of the existence of the Babakan Siliwangi Urban Forest using the Likert scale were very good, especially regarding facilities, plant vegetation, and urban forest design. The existence value of the Babakan Siliwangi Urban Forest is based on total willingness to pay (WTP) of Rp14,499,910,722.00/year. The results of the economic feasibility analysis of the Babakan Siliwangi Urban Forest with social benefits as carbon sinks and the existence value already meet the economic feasibility criteria, meaning that urban forests can improve social welfare.
Keyword: analysis costs and benefits, willingness to pay, existence value, urban forest

Judul: Synthesis of Biphasic Calcium Phosphate Made of Eggshells Through A Hydrothermal Method
Abstrak: Biphasic Calcium Phosphate mixed of hydroxyapatite and tricalcium phosphate. A hydrothermal method of synthesizing by mixing CaO as calcium source and (NH4)2HPO4 as phosphate source with distilled water. CaO got from calcination process made of eggshells. All samples were synthesized using hydrothermal reactor then followed by sintering process. The molar ratio of Ca and P for all samples was 0.5 M : 0.3 M. Hydrothermal temperature and sintering temperature were variated they are 250 ºC, 300 ºC for hydrothermal and 800 ºC, 900 ºC, 1000 ºC for sintering, higher treatment temperature, tricalcium phosphate appears. Final results of synthesis were characterized by using X-ray Diffraction and Fourier Transform Infrared. X-ray Diffraction patterns was ecompared with database Join Committee on Powder Diffraction Standards and found tricalcium phosphate and hydoxyapatite.
Keyword: biphasic calcium phosphate, hydrothermal, hydroxyapatite, tricalcium phosphate