Judul: Kajian stok dan analisis ketidakpastian hasil  tangkapan sumberdaya ikan pepetek (Leiognathus equulus Forskal, 1874) di perairan Teluk Jakarta
Abstrak: lkan pepetek (Leiognathus equulus) termasuk kelompok ikan demersal yang mempunyai nilai ekonomis dan tersebar di seluruh wilayah perairan Indonesia, salah satunya di perairan Teluk Jakarta. Ikan pepetek merupakan hasil tangkapan sampingan yang diolah menjadi ikan asin, pakan udang dan pakan ikan. Walaupun demikian, ikan pepetek merupakan ikan tangkapan dominan yang didaratkan di TPI Cilincing. Penelitian ini bertujuan untuk mengkaji stok ikan pepetek melalui aspek biologi, seperti TKG, nisbah kelamin, hubungan panjang bobot, faktor kondisi, parameter pertumbuhan, dan laju mortalitas selain itu dianalisis juga laju eksploitasi dan analisis ketidakpastian hasil tangkapan ikan pepetek. Informasi ini merupakan masukan yang diperlukan dalam penyusunan rencana pengelolaan sumberdaya ikan pepetek yang berkelanjutan
Keyword: 

Judul: Kajian Stok Ikan Pepetek (Leiognathus splendens Cuvier, 1829) di Perairan Selat Sunda ,Banten
Abstrak: Ikan pepetek merupakan jenis ikan demersal. Pemanfaatan sumberdaya perikanan di Indonesia masih bersifat open access termasuk di kawasan Selat Sunda, Banten. Penelitian ini bertujuan untuk menjelaskan karakteristik dan kondisi stok ikan pepetek (Leiognathus splendens) di Perairan Selat Sunda, Banten untuk dijadikan sebagai dasar pengelolaan sumberdaya ikan pepetek agar pemanfaatannya dapat dilakukan secara optimal dan berkelanjutan. Penelitian ini dilaksanakan pada bulan Mei-Oktober 2018. Hasil penelitian menunjukkan nilai estimasi L∞ pada ikan pepetek jantan dan betina didapatkan 224 mm dan 290 mm dan nilai K sebesar 0,51 dan 0,51. Nilai laju eksploitasi ikan pepetek jantan dan betina masing-masing sebesar 0,7865 dan 0,6853. Potensi maksimum lestari pada ikan pepetek sebesar 1.489 ton/tahun dan upaya optimum lestari sebesar 3.436 trip/tahun. Pemanfaatan ikan pepetek jantan dan betina telah mengalami overfishing.
Keyword: ikan pepetek, kajian stok, laju eksploitasi, Selat Sunda

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