Judul: Studi Potensi Pembangkit Listrik Tenaga Gelombang Laut dengan Sistem Overtopping di Pulau Pari.
Abstrak: Laut Indonesia masih belum digunakan sebagai sumber energi listrik. Salah satu sumber energi yang potensial dan melimpah dari laut adalah gelombang laut. Penelitian ini menjelaskan pengukuran karakteristik gelombang laut serta menghitung secara spasial dan temporal besarnya potensi energi gelombang laut di Perairan Pulau Pari menggunakan pembangkit listrik tenaga gelombang laut (PLTGL) dengan sistem overtopping. Energi yang dapat dipanen dari gelombang laut dihitung berdasarkan penggunaan konverter energi gelombang Wave Dragon. Konverter tersebut merupakan tipe terminator. Gelombang laut di pulau Pari dikategorikan sebagai smooth sea dengan tinggi gelombang signifikan 0.16-0.51 meter dan periode 2-4 detik. Berdasarkan hasil perhitungan, konverter energi gelombang berpotensi menghasilkan energi hingga 28 MJ dan daya hingga 6 MW. Berdasarkan hasil tersebut, PLTGL tipe overtopping Wave Dragon mampu memenuhi kebutuhan daya listrik di Pulau Pari dengan dua opsi, yaitu menggunakan 35 unit WD 1 di pesisir Pulau Pari dengan jarak 500 m dari pemukiman atau menggunakan 6 unit WD 2 dengan lokasi penempatannya berada di wilayah timur laut Pulau Pari yang berjarak 18 Km dari pemukiman Pulau Pari.
Keyword: daya, energi, gelombang, overtopping, Pulau Pari

Judul: A Study On Potential Renewable Energy From Ocean Waves in Palabuhanratu Bay
Abstrak: One of the sources of energy in the sea that can be utilized in Indonesia is wave energy. This study aims to see the potential of ocean wave energy in Palabuhanratu Bay spatially and temporally using a modeling method with the DELFT 3D application. The data sources used are bathymetry data from BIG, wind data from ECMWF, and wave data from Copernicus. Data processing is done by processing bathymetry and wind data first, which is then entered into the model configuration and then adjusted according to the moonson period and scenario. The sea wave power generator (PLTGL) converter scenario is used to estimate the existing potential using a Point Absorber converter. The wind in Palabuhanratu Bay is included in the category of slow gusts with the highest frequency in the category 2,10 – 3,60 m s-1 with a percentage of 30,5%. The sea waves in Palabuhanratu Bay are categorized into Slight Sea with significant wave heights ranging from 0 - 2 m with an average period of 15 seconds. Based on the model results, the wave energy transport has an energy value of up to 0 - 8 kW m-1 with the highest value occurring in the East Season. Based on these results, the Point Absorber type PLTGL produces electric power in Palabuhanratu Bay with two scenarios, the first scenario is in the inner bay which produces 0.09 MW of power with an average energy per day of 261 W. 2,7 MW with an average energy per day of 7344 W.
Keyword: Modelling, Palabuhanratu Bay, Renewable Energy, Waves

Judul: Sintesis dan Pencirian Kompleks Fe(III)-Kuersetin
Abstrak: Quercetin belongs to flavonols which is able to chelate metal ions. Quercetin may chelate metal ions at 3’,4’-catechol, 3- or 5-hydroxycromone sites. In this study, quercetin was complexed with Fe(III). The complex with Fe(III) ions from FeCl3·6H2O was more stable than the complex derived from Fe(NO3)3·9H2O. The quercetin was yellow in color and showed maximum wavelengths (λ􀭫􀭟􀭶) at 250 and 370 nm. The Fe(III)-quercetin complex from Fe(NO3)3·9H2O was yellowish green with 􀟣􀭫􀭟􀭶 at 280 and 420 nm, whereas that from FeCl3·6H2O was dark green with 􀟣􀭫􀭟􀭶 at 280 and 430 nm. The 􀟣􀭫􀭟􀭶 shift indicated that the complex was formed at 3-hydroxychromone site. The Fe(III)- quercetin complex was formed with 1:1 metal-ligand mole ratio based on atomic absorption spectrophotometry analysis and the X-ray diffractogram showed that the crystallinity of the complex was 37%.
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