Judul: Kesehatan Karang Porites Sp. Di Daerah Pariwisata Dan Non Pariwisata Di Pulau Pramuka, Kepulauan Seribu
Abstrak: Terumbu karang merupakan ekosistem yang menunjang kehidupan bagi biota lain di dalamnya, sebagai sumber plasma nutfah, pelindung wilayah pantai serta dapat mengurangi pemanasan global. Koloni massive genus Porites (Porites lutea, Porites lobata) adalah karang penting dalam menyusun struktur terumbu karang yang memiliki kemampuan beradaptasi dan memiliki toleransi terhadap tekanan fisik lingkungan seperti kekeruhan dan sedimentasi. Penelitian ini bertujuan untuk menentukan perbedaan kondisi karang Porites sp. seperti kerusakan atau keberadaan penyakit, pemutihan serta gangguan kesehatan karang di daerah pariwisata dan non pariwisata. Penelitian ini dilaksanakan di Pulau Pramuka, Kepulauan Seribu, DKI Jakarta. Pengambilan data di lakukan pada bulan Januari 2015 dengan 2 stasiun penelitian,yaitu daerah pariwisata dan non pariwisata, masing-masing stasiun terdapat 3 titik lokasi pengamatan.Metode yang digunakan adalah metode Belt Transect(20 x 2meter)dengan dilakukan tiga kali ulangan. Sebagai indikasi kesehatan karang Porites sp. di Pulau Pramuka secara keseluruhan ditemukan 10 jenis penyakit. Gangguan kesehatan karang yang terdiri dari 4 jenis penyakit karang, 2 jenis pemutihan karang, dan 4 jenis gangguan kesehatan karang. Jumlah total kasus yang ditemukan di stasiun pariwisata baik penyakit, pemutihan karang, dan gangguan kesehatan mencapai 102 kasus sedangkan untuk stasiun non-pariwisata hanya mencapai 28 kasus. Hal ini mengindikasikan kondisi karang Porites sp. yang berada di kawasan pariwisata lebih buruk diandingkan di kawasan non pariwisata
Keyword: karang, Porites sp, non pariwisata, pariwisata.

Judul: Pengaruh Kawasan Pariwisata Terhadap Kesehatan Karang di Pulau Pari, Kepulauan Seribu
Abstrak: Traveling is become a world-wide trend which has been done by many nature lovers. Indonesia, which has many islands, becomes a magnet for tourists to see its underwater beauty. One of these islands is Kepulauan Seribu. Tourism activity causes several damages to coral reef ecosystems. One of them is coral disease, which resulted in the degradation of coral reef ecosystems in the world. This study aims to measure the coral reefs' health rate based on the observation of the abundance and prevalence of coral disease, and analyze the impact of tourism activity on coral reefs' health. This study was conducted from 24 to 25 November 2013 in Pari Island, Kepulauan Seribu, with 4 scattered stations. The method used was the Belt Transect method in the area of 2 x 100 meters, and Line Intercept Transect ( LIT ) in 30 meters long with three replications. Based on the result of the research, coral bleaching phenomenon was found in tourism and non-tourism area. Meanwhile, the most common diseases and health problems in this area are ulcerative white spots (UWS) and sediment damage (SD).
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Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4