Judul: Analisis Residu Hormon Melengestrol Asetat dalam Daging Sapi yang Diimpor dari Australia dan Selandia Baru melalui Pelabuhan Laut Tanjung Priok
Abstrak: Melengestrol acetate (MGA) is an orally active progestational steroid used to improve weight gain, feed conversion efficiency, promote growth, and suppress oestrus in beef heifers. The use of MGA can leave residue in meat and may caused carcinogenic effects. The objectives of this research were to detect MGA residue in imported meat, and to analyze the presence of the MGA residue in imported meat from Australia and New Zealand. Sample size was calculated using the formula according to Canon and Roe (1982) cited by Martin et al. (1987) and selected by random sampling. All samples were analyzed using enzym linked immunosorbent assay (ELISA). The test showed that 6 out of 59 samples (10.17%) contained MGA residues in imported meat from Australia, while 2 out of 59 samples (3.39%) contained MGA residues in imported meat from New Zealand. The result showed that MGA mean concentrations in imported meat from Australia and from New Zealand were 0.256 ± 0.018 ppb and 0.315 ± 0.006 ppb. Concentration of MGA in imported meat from Australia and New Zealand did not differ (p>0,05). MGA concentrations in imported meat from Australia and New Zealand were lower than the maximum residue level (MRL) according to the Indonesian National Standard.
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Judul: Analisis Residu Zeranol dalam Daging Sapi yang Diimpor dari Australia dan Selandia Baru melalui Pelabuhan Tanjung Priok
Abstrak: Zeranol is one of the hormone growth promotants which is a synthetic derivative product from mycotoxin and could affect human health. The objective of this research was to analyze the presence of zeranol residue in imported meat from Australia and New Zealand. All of the meat samples were detected by enzyme linked immunosorbent assay (ELISA). The result showed that 5 of 59 (8.5%) samples from Australia and 1 of 59 (1.7%) samples from New Zealand contained zeranol residue, with a mean concentration of 0.644±0.157 ppb and 0.680±0.00 ppb, respectively. There were no significant difference concentration of zeranol residue in imported meat from both countries (p>0.05). The result indicated that the concentration of zeranol residue was below the maximum residue limit (MRL) which was established by the National Standardization Agency of Indonesia (SNI No. 01-6366-2000).
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Judul: Desain Bangunan Turbin Picohidro dengan Tenaga Air Irigasi
Abstrak: Jaringan irigasi memiliki potensi sebagai pembangkit listrik tanpa emisi karbon. Penelitian ini bertujuan mendesain bangunan turbin pikohidro dengan tenaga air irigasi. Desain bangunan turbin pikohidro tenaga air irigasi telah dapat didesain dengan turbin reaksi kaplan yang terdiri dari desain turbin tunggal dengan daya 24,5 kWh/hari dan desain multi turbin dengan daya 122,75 kWh/hari. Kecepatan aliran irigasi berkisar antara 0,4 m/s – 0,74 m/s dengan potensi daya 1,4 kWh – 655,1 kWh. Hasil simulasi menunjukan tipe Kaplan adalah turbin terbaik yang dapat digunakan pada desain bangunan turbin pikohidro tenaga irigasi. Pada kondisi debit inlet 18 l/s dan ketinggian terjun 0,5 m bangunan turbin pikohidro menghasilkan putaran poros turbin sebesar 106 rpm, tegangan 15,6 volt dan arus 1,1 ampere. Bangunan turbin pikohidro sebaiknya dipertimbangkan sebagai bagian dari bangunan terjun aliran irigasi untuk meredam energi.
Keyword: Irrigation Networks, Pico hydro, Turbine, Power