Judul: Spatial Temporal Distribution of Female  Short Mackerel (Rastrelliger brachysoma, Bleeker, 1851) in WPP 712 Based on e Logbook
Abstrak: Ikan kembung perempuan (Rastrelliger branhyosoma) merupakan salah satu jenis ikan ekonomis penting yang umum ditangkap di Wilayah Pengelolaan Perikanan Republik Indonesia (WPPNRI) 712. Penelitian ini berfokus pada wilayah WPP 712 dengan menggunakan data sekunder yang diperoleh dari e-logbook Sistem Informasi Logbook Penangkapan Ikan (SILOPI) Kementerian Kelautan dan Perikanan Republik Indonesia. Penangkapan ikan kembung yang dilakukan nelayan menggunakan 12 jenis alat tangkap dengan alat tangkap dominan yang digunakan adalah pukat cincin. Catch per unit effort (CPUE) ikan kembung perempuan di WPP 712 selama 5 tahun terakhir memiliki nilai yang fluktuatif dan cenderung menurun. Analisis model produksi surplus (MPS) yang dilakukan dengan 5 macam model menujukan model Clarke Yhosimoto Pooley dengan koefisien determinasi (R2) sebesar 81,55% sebagai model yang paling menggambarkan kondisi sesungguhnya. Status stok ikan kembung perempuan dalam kurun waktu 5 tahun terakhir tergolong underfishing. Distribusi daerah penangkapan secara spasial dan temporal selalu mengalami perubahan dengan dominasi lokasi penangkapan berada di bagian utara pekalongan., The female Indian mackerel (Rastrelliger branhyosoma) is one of the economically important fish species commonly caught in the Republic of Indonesia Fisheries Management Area (WPPNRI) 712. This study focuses on the WPP 712 area using secondary data obtained from the e-logbook of the Fishing Logbook Information System (SILOPI) of the Ministry of Maritime Affairs and Fisheries of the Republic of Indonesia. Mackerel fishing by fishermen uses 12 types of fishing gear with the dominant gear used is purse seine. Catch per unit effort (CPUE) of female mackerel in WPP 712 for the last 5 years has a fluctuating value and tends to decrease. Analysis of the production surplus model (MPS) conducted with 5 different models showed the Clarke Yhosimoto Pooley model with a coefficient of determination (R2) of 81.55% as the model that best describes the real conditions. The stock status of female mackerel in the last 5 years is classified as underfishing. The spatial and temporal distribution of fishing areas always changes with the dominance of fishing locations in the northern part of Pekalongan.
Keyword: fishing grounds, fishing gear, stock status, female mackerel, WPP 712

Judul: Stock Status of Mackerel (Rastrelliger faughni Matsui, 1967) in the Sunda Strait
Abstrak: Ikan kembung (Rastrelliger faughni Matsui, 1967) merupakan salah satu jenis ikan pelagis yang memiliki nilai ekonomis penting, sehingga termasuk salah satu target penangkapan nelayan di Perairan Selat Sunda, Banten. Tujuan dari penelitian ini adalah menentukan status stok sumberdaya ikan kembung di Perairan Selat Sunda berdasarkan ikan yang didaratkan di Pelabuhan Perikanan Pantai (PPP) Labuan Banten. Penelitian ini dilakukan pada periode Juni hingga Oktober 2014. Analisis yang dilakukan meliputi analisis nisbah kelamin, hubungan panjang dan bobot, tingkat kematangan gonad, fekunditas, sebaran kelompok umur, mortalitas, laju eksploitasi, dan model produksi surplus. Hasil yang diperoleh menunjukkan bahwa pola pertumbuhan ikan kembung betina maupun jantan adalah allometrik positif. Laju eksploitasi ikan kembung betina dan jantan telah mengalami tangkap lebih. Hasil tangkapan maksimum lestari dan upaya optimum sebesar 422 ton per tahun dan 758 trip per tahun.
Keyword: Mackerel (Rastrelliger faughni), exploitation rate, the pattern of growth, sunda strait, maximum sustainable yield, Fish stock, Pelagic fish, Sex ratio, Length and weight, Maturity level, Age group distribution, Mortality

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4