Judul: Valuasi Ekonomi dan Analisis Konservasi Hutan Mangrove di Kabaupaten Kubu Raya
Abstrak: Mangrove is a forest type that grown on tidal areas and has a tolerance to certain value of salinity. As an ecosystem, mangrove plays important roles and functions as a life support system. It is often the benefits and functions of a mangrove ecosystem, are not easily recognizable and measurable so mostly neglected in a regional development planning of an area as is the case in the regency of Kubu Raya. The research is aimed at the identification of mangrove ecosystem benefits, total economic value of a mangrove ecosystem and analysis of mangrove conservation strategy in Kubu Raya Regency. The benefits identified consist of direct benefits (such as commercial wood, fire woods, poles, charcoal, aquatic biota, the use of palm leaves and mangrove seedlings) and indirect benefits (such as prevention of abrasion, storing carbon, producing oxygen, seawater intrusion barrier and producing nutrients), optional and existence benefits. It is also identified that the total economic value of mangroves in Kubu Raya Regency is Rp. 400,018,397,288,- per year. The value is the higest among others and it indicated that the peoples of Kubu Raya District significantly respected to existence of mangrove present and in the future. Production forest managed by private sector (IUPHHK) are more efficient and higher economic values than other (in the protection forest and other land use areas). It indicates that the protection forest and other land use areas not managed optimally yet. In order to enhance the benefit values of mangrove in Kubu Raya District, it needs the following strategies: diversification in the uses of protection forest (land utilization, environmental services, and non wood forest products), increase the efficiency of forest management/utilization by local community, application of profer mangrove silviculture, and implementation of criteria and indicator of sustainable mangrove management.
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Judul: Penilaian Ekonomi dan Analisis Stakeholder Ekosistem Hutan Mangrove (Studi Kasus: Desa Dabong, Kecamatan Kubu, Provinsi Kalimantan Barat)
Abstrak: Mangrove merupakan ekosistem yang penting bagi masyarakat Desa Dabong. Masyarakat memanfaatkannya sebagai mata pencaharian dan pemasok jasa lingkungan, seperti pelindung abrasi, penyerap karbondioksida, dan tempat pemijahan. Persepsi masyarakat yang cenderung sempit terhadap ekosistem mangrove menyebabkan pemanfaatannya tidak lestari. Penelitian ini bertujuan untuk menghitung nilai ekonomi ekosistem mangrove di Desa Dabong dan menganalisis tingkat pengaruh dan kepentingan stakeholder dalam pengelolaan ekosistem mangrove setempat. Penelitian menunjukkan nilai ekonomi guna ekosistem hutan mangrove Desa Dabong per tahun adalah sebesar Rp56 182 519 050.11. Stakeholder yang terlibat terdiri atas masyarakat umum, Kelompok Nelayan, Kelompok Budidaya Kepiting Soka, Dinas Perkebunan, Kehutanan, dan Pertambangan Kabupaten Kubu Raya, Dinas Kehutanan Provinsi Kalimantan Barat, Dinas Kelautan dan Perikanan Kabupaten Kubu Raya, dan IFAD (International Fund for Agricultural Development), dan Pemerintah Desa.
Keyword: Economic value, management, mangrove forest Kubu Raya, stakeholder analysis

Judul: Sintesis α-Fe2O3 menggunakan metode sol gel
Abstrak: In this reseach was succeeded make powder α-Fe2O3 with particle size 202.64 nm. Synthesis using Sol-Gel method with SiO2 coating derived from Si(OC2H5)4 at temperature of 750 oC for 5 hours. Characterization XRD prove that sample form is α-Fe2O3 (11 peaks) and β-Fe2O3 (2 peaks) with crystal size 20.69125 nm and crystallization 44 %. The cystal structure of α-Fe2O3 is rhombohedral and β-Fe2O3 is hexsagonal. Optic characterization show that the sample absorbing light at wavelength less than 480 nm. Bandgap energy of the optical characterization measurments is 2.74 eV.
Keyword: α-Fe2O3, annealing, bandgap energy, sol-gel, crystal structure.