Judul: Uji Transportasi Ikan Maskoki (Carassius auratus Linnaeus) Hidup Sistem Kering dengan Perlakuan Suhu dan Penurunan Konsentrasi Oksigen
Abstrak: Ikan hias merupakan komoditas perikanan yang juga ikut menyumbang banyak devisa, nilai ekspornya sangat besar dan cenderung meningkat dari tahun ke tahun. Ikan maskoki (Carassius auratus) termasuk salah satu jenis ikan hias yang non-temporer, peluang pasarnya selalu stabil bahkan menunjukkan peningkatan. Pada pengangkutan ikan hias dengan media air untuk tujuan ekspor dinilai kurang effisien, karena berat air yang yang digunakan sebagai media juga ikut membebani biaya pengangkutan. Sistem pengangkutan ikan hidup tanpa media air dapat menjadi salah satu alternatif untuk mengurangi biaya angkut dan memungkinkan jumlah ikan yang diangkut lebih besar.
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Judul: Uji Transportasi Ikan Maskoki (Carassius auratus Linnaeus) Hidup Sistem Kering dengan Perlakuan Suhu dan Penurunan Konsentrasi Oksigen
Abstrak: This research aimed to discover the optimum factors (sedation rate, sedation temperature, storage temperature, reduced O2 concentration, and period of transportation) influenced to survival rate during dry system transportation (static) of live goldfish. Observation on fish condition during sedation, packaging, unpacking, and refreshing process; toxicity test on filler; bulk density measurement on filler; water absorption of filler; and container efficiency were also performed. The results showed that the optimum sedation temperature is at 60C, the optimum storage temperature is at 180C, the best sedation rate is eight hours from normal temperature (± 270C) down to 60C, the best reduced O2 concentration is 0 % reduction in O2 concentration (package which was contained ±21% O2 concentration), and the longest period of transportation (static) is 24 hours by normal atmosphere packaging. The filler was known harmless for live goldfish after 24 hours of toxicity test. The bulk density of filler is 0.074 gram/cm3 and the capacity of water absorption of filler is 57.32% wet weight or 135.23% dry weight.
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Judul: Photosensor producing based on ferroelectric material of Ba0,5Sr0,5TiO3 doped by Ferrium Oxide (Fe2O3) on a P-Type Silicon Substate Si (100) applied as a digital camera with a single pixel image sensor
Abstrak: Thin film Ba0,5Sr0,5TiO3 (BST) doped with Fe2O3 was grown on p-type silicon substrate (100) using chemical solution deposition (CSD). It used the solvent 2-methoxyethanol with annealing temperature of 850°C and the doping treatment Fe2O3 of 2.5, 5, 7.5, 10 % of the mass formed BST. Pure BST had the highest absorption of 600 nm of light wavelength. Additions Fe2O3 moves highest absorption in the range of 560 nm. Fe2O3 addition was strengthening thin film sensitivity to the effects of light. In general, doping Fe2O3 10% was result the best absorbance and current-voltage of BST thin film. Electrical properties of thin films BST include dielectric, photoconductivity, and dissipation energy. Based on the current-voltage (I-V) analysis, pure BST and doped BST showed photodiode properties. Dielectric values obtained in the range from 23.32 to 243. Based on electrical conductivity data and energy dissipation, BST thin films have shown photodiode characteristics and are therefore suitable as light sensors. The image sensor in a digital camera is also a light sensor. This BST thin film has been scientifically proven to be a light sensor and also it can be applied as an image sensor. This is a novelty image sensor based on thin film Ba0.5Sr0.5TiO3.
Keyword: barium strontium titanate, thin film, photodiode, image sensor, digital camera