Judul: Aspek Reproduksi Ikan Tembang (Sardinella fimbriata Cuvier dan Valenciennes 1847) di Perairan Teluk Banten.
Abstrak: Fringescale sardinella (Sardinella fimbriata) has an important economic value and high levels of utilization. Indicated the availability of S. fimbriata decline in reproduction studies Karangantu so necessary for further management. The research was conducted in May-August 2012. Based on this research, it is known reproductive pattern S. fimbriata from Banten Bay. Total number of fish taken during the study were 765 individuals. Results showed that the sex ratio of male and female Fringescale sardinella unbalanced (0,7:1) with Chi-square test. Condition factor S. fimbriata ranged from 0,9248 to 5,8707. Fringescale sardinella female mature more rapidly than male fish gonads with mature gonads were first size of 179,4 mm (female) and 192,4 mm (male). Peak spawning season of Fringescale sardinella in Banten Bay waters allegedly occurred in May and late August. Reproductive potential of S. fimbriata high at 9 691-173 335 eggs. Egg diameter of S. fimbriata ranged from 0,0250 to 0,6250 mm with the spread mode from two types of spawning peaks with partial (partial spawner).
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Judul: Biologi Reproduksi Ikan Tembang (Sardinella fimbriata Valenciennes, 1847) di Perairan Selat Sunda, Banten
Abstrak: Ikan tembang (Sardinella fimbriata) adalah ikan pelagis kecil yang bernilai ekonomis tinggi. Tingginya permintaan ikan ini diperkirakan dapat menurunkan ketersediaannya di alam. Tujuan penelitian ini adalah untuk menganalisis biologi reproduksi ikan tembang. Penelitian dilakukan pada bulan Mei hingga Oktober 2018. Ukuran contoh yang diperoleh selama penelitian berjumlah 629 ekor, terdiri atas 265 ekor ikan jantan dan 364 ekor ikan betina. Proporsi kelamin ikan jantan dan ikan betina tidak seimbang (1:1,4). Pertumbuhannya adalah allometrik negatif. Faktor kondisi ikan tembang betina lebih tinggi dibandingkan ikan jantan. Puncak musim pemijahan terjadi pada bulan Agustus dan September. Fekunditas berkisar antara 4118-9767 butir. Pola sebaran diameter menunjukkan bahwa ikan tembang memijah secara total (total spawner).
Keyword: ikan tembang, pemijahan, pertumbuhan, reproduksi, Selat Sunda

Judul: Synthesis and Characterization of Hydroxy-apatite with Controlled Pore
Abstrak: implant materials. Porosity hydroxyapatite can be formed using porogen hydrogen peroxide (H2O2), polyvinyl alcohol (PVA), ethylene glycol (EG), or polyethylene glycol (PEG). The pore size can be controlled by setting the concentration of porogen. The results of the characterization using X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) showed that the addition of porogen phase does not change the structure of hydroxyapatite, but changing the crystallite size and crystal strain. Increasing the concentration of porogen to 25% can increase the strain, crystallite size, and pore size. The degree of crystallinity of hydroxyapatite formation 0.75-0.83. Hydroxyapatite formed from 0.3 to 1.2 μm pore size, the largest pore is formed on the addition of polyethylene glycol porogen. Hydroxyapatite synthesized by addition and without addition of porogen does not contain heavy metals lead, cadmium, mercury, and arsenic
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