Judul: Tsunami risk assessment using probabilistic approach and GIS-based SAW Method: case study coastal area of Padang Sumatera Barat, Indonesia
Abstrak: Tsunamis are among the world's most destructive natural hazards. Tsunami is a system of gravity waves formed in the sea as a result of a large-scale disturbance of sea level over a short duration of time. A tsunamigenic earthquake is an earthquake that has generated a tsunami. In Indonesia, during the period 1600-2000, tsunamigenic earthquake occurrences are very often (90.5%). The objective of this research is to assess tsunami risk using Probabilistic approach and GIS-based SAW method, on coastal area of Padang, Sumatera Barat province, Indonesia as a case study. The Probabilistic approach was chosen to assess the probability of distributions and recurrence times (return periods) for tsunamigenic earthquakes with different magnitudes, for Indonesian region in Eurasia plate. The GIS-based SAW method is required to assess tsunami risk as spatial information, using the integration of the hazard and vulnerability. The outputs of this research are the probability of future tsunami for Indonesian region in Eurasia plate, tsunami risk zone and regional planning recommendation for coastal area of Padang.
Keyword: using Probabilistic, hazard, vulnerability, approach, GIS-based SAW method

Judul: Mapping of Tsunami Prone Areas with a Geographic Information System (GIS) at Pelabuhan Ratu Sukabumi
Abstrak: Indonesia dikenal dengan negara yang memiliki aktivitas seismik teraktif di dunia dikarenakan bertemunya tiga lempeng tektonik aktif yaitu lempeng Pasifik, lempeng Eurasia, dan lempeng Indo-Australia sehingga menjadi daerah yang berpotensi terjadinya tsunami yang disebabkan oleh gempa tektonik. Salah satu cara meminimalisir dampak bencana tsunami dengan dilakukannya pemetaan spasial berdasarkan multikriterial di wilayah Indonesia. Penelitian bertujuan mengetahui pengaruh parameter yang mempengaruhi daerah menjadi rawan bencana dan mengetahui tingkat keterpaparan pemukiman terhadap bencana tsunami. Tahap-tahap dalam pengolahan data meliputi pengumpulan dan klasifikasi parameter penentu kerawanan tsunami, skoring dan pembobotan setiap parameter, dan analisis tingkat kerawanan tsunami. Daerah yang berada dekat dengan pesisir pantai memiliki pengaruh yang lebih besar dibandingkan daerah yang jauh dari pesisir pantai terhadap tingkat kerawanan tsunami. Parameter jarak dari garis pantai dan elevasi daratan merupakan dua parameter dengan bobot terbesar. Daerah yang memiliki tingkat kerawanan tertinggi berada di Kelurahan Citepus, Kelurahan Jayanti, dan Kelurahan Palabuhanratu.
Keyword: Daerah rawan, pantai, SIG, tsunami

Judul: Sintesis Flavonol melalui 2’-Hidroksikalkon
Abstrak: Flavonol is a class of flavonoids commonly found in fruits and vegetables. Flavonol is very useful, especially in food sector and health. In this study, flavonol unsubstituted was successfully synthesized from an intermediate material 2’-hydroxychalcone. The 2’-hydroxychalcone was synthesized by Claisen-Schmidt condensation method between o-hydroxyacetophenone and benzaldehyde using 4 different catalysts, namely KOH 60%, solid pellet of KOH-grinding technique, BF3-Et2O, and NaH in DMF. The KOH 60% was the best catalyst, giving the highest yield (57%). Afterward, the flavonol was synthesized in 1-stage oxidation cyclization of o-hydroxyacetophenone using Algar-Flynn-Oyamada (AFO) reaction, giving 76%. The flavonol total yield from 2’-hydroxychalcone was 43%. All synthesized products were characterized by their melting points and their spectra. The success of the synthesis flavonol opens the way to synthesis of useful flavonol derivatives such as quercetin and kaempferol
Keyword: