Judul: Pemetaan batimetri perairan laut dangkal di gugusan pulau tiga, kabupaten natuna nengan menggunakan citra alos avnir-2
Abstrak: Batimetri adalah proses penggambaran dasar perairan sejak pengukuran, pengolahan, hingga visualisasinya. Tujuan dari penelitian ini adalah 1) memetakan perairan laut dangkal Pulau Tiga, Kabupaten Natuna dengan menggunakan citra satelit ALOS AVNIR-2 dengan mengaplikasikan algoritma Lyzenga (1985). 2) Melakukan uji akurasi citra satelit dengan menggunakan formula Root Mean Square Error (RMSE) matriks kesalahan atau matriks konfusi. Data yang digunakan adalah data digital citra ALOS AVNIR-2 akuisisi pada tanggal 20 Mei 2009 yang telah dikoreksi geometrik dan radiometrik, data pasang surut pada saat peliputan citra dan saat pengambilan data kedalaman pemeruman yang dilakukan oleh lembaga riset South East Asia Center for Tropical Biology (SEMEO BIOTROP) pada bulan Oktober dan November 2010. Kanal hijau merupakan kanal yang sesuai untuk memetakan kedalaman perairan laut dangkal Pulau Tiga, Kabupaten Natuna. Estimasi kedalaman perairan laut dangkal hasil turunan dari citra ALOS AVNIR-2 pada perairan laut dangkal Pulau Tiga hanya mampu menginterpretasikan kedalaman hingga kedalaman sekitar 8 meter. Ketelitian seluruh hasil klasifikasi (Overall Accuracy) antara nilai kedalaman pemeruman dan kedalaman dugaan citra adalah 68,79%. Model regresi linier yang dianalisis cukup memadai untuk digunakan pada transformasi citra ALOS AVNIR-2
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, ALOS AVNIR-2, Bathymetry, Lyzenga Algoritms

Judul: Pemetaan Batimetri Perairan Laut Dangkal di Gugusan Pulau Tiga, Kabupaten Natuna Dengan Menggunakan Citra Alos Avnir-2.
Abstrak: Bathymetry is a depiction of the bottom waters since the measurement, processing, up to the visualization. The purpose of this research is 1) To map the marine shallow waters on Tiga Island, Natuna Regency by using image of ALOS AVNIR-2 by applying the Lyzenga algorithm (1985). 2) To test the accuracy of satellite images using the formula Root Mean Square Error (RMSE) or confusion matrix. The data used is the digital image of ALOS AVNIR-2 acquisitions on May 20, 2009 which have geometric and radiometric correction, the data on the current tidal and current coverage of the image and depth of field data collection conducted by SEMEO BIOTROP in October and November 2010. Green canal is the canal corresponding to Mapping of Marine Shallow Water on Tiga Islands, Natuna Regency. Marine Shallow water estimation results derived from ALOS AVNIR-2 imagery in shallow waters of the Tiga Island only able to interpret the depth to a depth of about 8 meters. The accuracy of classification results (Overall Accuracy) between the values and depth of field image of the alleged depth is 68.79%. A linear regression Model that analyzed quite insufficient for use on image transformation of ALOS AVNIR-2
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Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
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