Judul: Fenomena dan Angkutan Massa  Air di Perairan Barat sumatera pada Bulan Juli 1990 dan Maret 1991
Abstrak: Perairan di barat Sumatera merupakan perairan yang dipengaruhi oleh dua macam arus, yaitu Arus Katulistiwa Utara dan Arus Katulistiwa Selatan. Asus katulistiwa utara adalah arus yang muncul pada bulan Desember - Mei dan bergerak ke arah barat. Arus katulistiwa selatan mesupakan arus dengan edaran tetap di Samudera Hindia. Arus ini menyebas dasi basatdaya Australia dan terjadi sepanjang tahun bergerak ke asah barat mendekati Madagaskar (Wyrtki, 1961). Tujuan dari penelitian ini adalah untuk mengetahui karakteristik massa ais laut dengan membandingkan sebaran suhu, salinitas, oksigen terlarut serta zat hara dan juga menghitung kejelukan dinamik dan volume angkutan di perairan barat Sumatera.
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Judul: Studi Karakteristik Massa Air Asal Samudera Pasifik di Perairan Timur Indonesia Pada Bulan November - Desember 1996.
Abstrak: Secara geografis perairan Indonesia berbatasan langsung dengan dua samudera besar dunia yaitu Samudera Pasifik dan Samudera. Adanya pergerakan massa air tersebut menyebabkan terciptanya kondisi oseanografi yang khas pada tiap wilayah laut di perairan Indonesia, khususnya di perairan timur. Penelitian mengenai karakteristik massa air ini dilakukan di wilayah perairan timur Indonesia yang tercakup dalam wilayah survei ARLINDO 96. Data ARLINDO 96 diperoleh dari pelayaran ARLINDO CIRCULATION 96 di perairan kawasan timur Indonesia yang meliputi perairan Selat Makassar bagian selatan, Laut Flores, Selat Kambing (antara Alor dan Wetar), Laut Banda, Laut Manui (Banda Utara), Selat Sanana, Laut Seram, dan Selat Lifomatola. Analisis data dilakukan terhadap sebaran menegak dan melintang suhu dan salinitas, diagram T-S (suhu-salinitas), diagram T-0 (suhu-oksigen) dan percampuran massa air menggunakan metode perhitungan Mamayev.
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Judul: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell