Judul: Struktur Populasi Tiram Pasifik (Crassostrea gigas, Thunberg 1793) di Pabean Ilir, Indramayu
Abstrak: Tiram pasifik (Crassostrea gigas) termasuk kelas Bivalvia atau kerang-kerangan yang bersifat filter feeder. Tiram telah banyak dimanfaatkan oleh masyarakat setempat dan dijadikan sebagai salah satu mata pencaharian. Tujuan penelitian ini adalah untuk menganalisis struktur populasi tiram pasifik di Pabean Ilir, Indramayu. Tiram yang digunakan dalam penelitian adalah hasil tangkapan langsung di lokasipenelitian dari April-Agustus 2016dengan metode purposive sampling yang dikombinasikan dengan pengambilan contoh acak. Tiram yang terkumpulkan selama penelitian sebanyak 1591 individu dengan jumlah tiram betina sebanyak 1156 individu dan tiram jantan sebanyak 435 individu. Kepadatan tiram pada masing-masing bulan tergolong rendah hingga sedang. Panjang cangkang rata-rata tiram yang dikumpulkan sebesar 70,24 mm. Terjadi penurunan populasi ditandai dengan ukuran tiram tertangkap semakin kecil.
Keyword: Crassosstrea gigas, distribusi, populasi, tiram pasifik

Judul: Sebaran Spasial Populasi Tiram Pasifik (Crassostrea gigas, Thunberg 1793) Terkait Faktor Lingkungan di Perairan Pabean Ilir, Indramayu
Abstrak: Tiram pasifik (Crassostrea gigas, Thunberg 1793) adalah organisme bentik dan cenderung hidup menetap di dasar perairan. Salah satu habitat tiram pasifik adalah perairan Pabean Ilir, Indramayu. Tujuan penelitian ini untuk memetakan sebaran spasial kepadatan populasi terkait kondisi lingkungan habitat tiram pasifik (Crassostrea gigas). Sebaran kondisi tersebut, dipetakan berdasarkan nilai-nilai karakteristik perairan dengan metode analisis spasial menggunakan software AcrGIS. Terdapat 15 titik stasiun pengambilan contoh di perairan Pabean Ilir. Kepadatan populasi tiram pasifik di perairan Pabean Ilir dapat dikategorikan menjadi tiga, yaitu: kepadatan rendah, sedang, dan tinggi. Berdasarkan kemiripan karakteristik lingkungan, perairan Pabean Ilir dapat dikelompokan terbagi menjadi empat kelompok. Nilai dari parameter suhu, salinitas, pH, BOD, TSS, TDS, COD, dan komposisi substrat menunjukkan bahwa perairan Pabean Ilir tergolong perairan yang baik dan optimum untuk mendukung pertumbuhan tiram pasifik.
Keyword: spatial analysis, environment, Pabean Ilir, population, pacific oyster

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