Judul: Penguraian Termal serta Pengaruh Jenis Media Tanah pada Laju Penguraian Aerob Plastik Oksobiodegradabel dan Edible Film
Abstrak: Degradation of oxobiodegradable plastic (OBP) in the environment has been studied by thermal and aerobic degradation tests. Thermal degradation of OBP was studied at 70, 110, and 150 °C and the chemical bonding transformation was analyzed by Fourier transform infrared spectroscopy. Based on the analysis, OPB could be degraded at temperature above 110 °C. Aerobic degradation was performed based on ASTM D5988-03, by using Martha Tilaar soil media which had C/N ratio of 5. The results have not yet fulfilled the degradation standard requirement. Aerobic degradation rate of OBP was 13.6 mg/24 days and was predicted to be biodegraded completely within ca. 12 months. In the same media, the degradation rate of edible film was faster than the OBP degradation rate. Several factors may affect the degradation rate, including sample raw material, total number of microbes, ash content, moisture content, temperature, and humidity of the environment.
Keyword: plastic, oxobiodegradable, edible film, aerobic degradation

Judul: Observation on Bioplastic Degradation by  River Microbial Communities
Abstrak: Plastik merupakan polimer polietilen yang rekalsitran karena ikatan kimianya tidak mudah diuraikan oleh kebanyakan mikrob pengurai. Produksi sampah plastik yang tinggi menyebabkan penumpukan hingga pencemaran air atau tanah oleh sampah plastik. Hal ini dapat diminimalkan dengan metode penguraian sampah berbasis biologi menggunakan bakteri pendegradasi plastik yang ramah lingkungan dan ekonomis. Penelitian ini bertujuan memperoleh bakteri untuk mempercepat proses degradasi plastik oleh komunitas mikrob asal air sungai. Metode yang digunakan dalam penelitian ini meliputi pengambilan sampel air dan lumpur dari Sungai Ciliwung, Sungai Cisadane, dan Sungai Ciapus, pengamatan degradasi bioplastik, pengayaan bakteri pendegradasi plastik, isolasi bakteri pendegradasi plastik dan uji degradasi plastik. Hasil penelitian menunjukkan degradasi terdapat pada seluruh sampel bioplastik. Penambahan pupuk NPK menghasilkan proses degradasi pada bioplastik lebih cepat. Sebanyak 15 isolat bakteri diperoleh dari seluruh sampel dan dapat mendegradasi plastik. Proses biodegradasi dilakukan oleh sekolompok bakteri, bukan koloni tunggal., Plastics are recalcitrant polyethylene polymers because their chemicals are not easily broken down by most decomposers. The high production of plastic waste causes the accumulation of air or soil pollution by plastic waste. This can be minimized by a biological-based waste decomposition method using plastic degrading bacteria that is environmentally friendly and economical. This study aims to obtain bacteria to support the plastic degradation process by microbes from river water. The methods used in this study include taking samples of water and mud from the Ciliwung River, Cisadane River, and Ciapus River, observing bioplastic degradation, enriching plastic-degrading bacteria, isolating plastic degrading bacteria and testing plastic degradation. The results showed some degree of degradation in all bioplastic samples. The addition of NPK fertilizer made the degradation process of bioplastics run faster. 15 different bacterial isolates were obtained from all samples and could degrade plastics. The biodegradation process is carried out by groups of bacteria, not single colonies.
Keyword: Bacteria, Biodegradation, Bioplastic, River

Judul: Warna bulu kucing ras persia: variasi pola warna dan pewarisannya
Abstrak: Kucing Persia mempakan kucing rasyang paling urnum dijumpai di Indonesia. Kucing Persia memiliki bulu yang panjang dengan variasi wama bulu yang sangat beragam. Perkawinan yang lebih terarah sangat perlu dilakukan untuk meningkatkan kualitas genetik warna dan pola wama bulu kucing. Penelitian ini bertujuan untuk rnempelajari variasi warna dan pola wama bulu kucing Persia yang terdapat di Indonesia, yang dilakukan di kantor pusat Cat Fancy Indonesia mulai bulan Oktober 2000 sampai Januari 2001. Data yang digunakan rnempakan data pedigree kucing Persia yang tercatat di Cat Fancy Indonesia dari tahun 1997 sampai Oktober 2001 yang terdiri dari 187 jantan dan 258 betina, selain itu juga dilakukan pengamatan langsung kepada tiga penyayang dan breeder kucing yang ada di Bandung.
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