Judul: Noise Intensity Based on Engines Age of Payang Vessel at  the Palabuhanratu Nusantara Fisheries Port
Abstrak: Kapal payang yang menggunakan mesin motor tempel 40 PK sebanyak 39 unit. Mesin motor tempel tersebut merupakan sumber kebisingan utama di kapal payang. Tujuan penelitian ini mengidentifikasi intensitas kebisingan mesin motor tempel pada berbagai rentang umur mesin dan pola perawatan mesin kapal payang di PPN Palabuhanratu dan memetakan distribusi intensitas kebisingan. Metode analisis yang digunakan yaitu analisis deskriptif dan membandingkan dengan Nilai Ambang Batas (NAB). Sampel kapal yang digunakan sebanyak 4 unit dengan umur mesin, 1 tahun, 6 tahun, 15 tahun, dan 20 tahun. Hasil penelitian menunjukkan bahwa nilai intensitas kebisingan pada saat kondisi stasioner sebesar 59.2-77.5 dB(A) dan pada saat kondisi full rpm sebesar 70.3-104 dB(A). Nilai intensitas kebisingan tersebut dipengaruhi oleh pola perawatan mesin akan tetapi tidak dipengaruhi oleh umur mesin. Paparan intensitas kebisingan pada kapten kapal dan ABK berbeda. Hal ini dipengaruhi oleh rpm mesin pada saat stasioner dan full rpm. Kapten kapal dan ABK yang berada di buritan menerima paparan intensitas kebisingan di atas Nilai Ambang batas (NAB) sedangkan ABK yang berada di haluan menerima paparan intensitas kebisingan di bawah NAB. Pemilik kapal dan nelayan harus meningkatkan kepedulian terhadap pola perawatan mesin. Kata kunci: kapal payang, kebisingan, NAB, motor tempel, PPN Palabuhanratu, Payang vessel that uses 40 PK outboard engine is as many as 39 units. The outboard engine is the main source of noise on the payang vessel. Purposes of this study were to identify the noise intensity of outboard engines across various engine ages of paying vessels in Palabuhanratu and their maintenance patterns and mapp the distribution of noise intensity. Data were analysed using descriptive analysis including comparison to Threshold Value (NAB). Samples were collected from 4 vessels with various engine age i.e. 1 year, 6 years, 15 years, and 20 years. The results showed that noise intensity at idle mode was 59.2-77.5 dB(A) and at full rpm mode was 70.3-104 dB(A). The noise intensity was influenced by the maintenance pattern of the engine but was not affected by its age. Exposure to noise on skipper and crew is different. This is influenced by different rpm when the engine was set at stationary and full rpm modes. Skipper and crew who sit in the stern area received noise exposure above the threshold while the ones siting at the bow area receive noise exposure below the threshold. Vessel owners and fishermen should raise concerns about engine maintenance patterns. Keywords: payang vessel, Noise, NAB, outboard engine, PPN Palabuhanratu
Keyword: payang vessel, Noise, NAB, outboard engine, PPN Palabuhanratu

Judul: Distribusi Kebisingan Pada Perahu Katir Penangkap Ikan Di Palabuhanratu, Sukabumi, Jawa Barat (Studi Kasus Pada Km Seuri Mulya 1)
Abstrak: KM Seuri Mulya 1 merupakan kapal penangkap ikan yang diklasifikasikan ke dalam golongan motor tempel di Indonesia. Tujuan penelitian ini adalah menentukan tingkat kebisingan di perahu katir, dan menentukan Nilai Ambang Batas (NAB) yang sesuai dengan Permenakertrans No.13/ MEN/X/2011 tentang NAB Faktor Fisika dan Faktor kimia di Tempat Kerja. Berdasarkan hasil penelitian, KM Seuri Mulya 1 memiliki sumber kebisingan berasal dari mesin motor yang menghasilkan kebisingan selama 11,5 jam. Nilai kisaran tingkat kebisingan di KM Seuri Mulya 1 adalah sebagai berikut: menuju ke fishing ground: 62,57–95,43 dB; setting: 52,53–80,67 dB, dan kembali ke fishing base: 65,50–98,33 dB. Kebisingan di kapal terjadi pada aktivitas menuju ke fishing ground, saat setting, dan saat kembali ke fishing base berasal pada posisi bagian belakang perahu.
Keyword: kebisingan, mesin, nilai ambang bat

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
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