Judul: Studi kualitas air dan limbah cair industri tapioka rakyat di daerah Bogor
Abstrak: Penelitian ini bertujuan untuk mengetahui macam dan kualitas, air yang digunakan pada industri tapioka rakyat di daerah Bogor, serta kualitas limbah yang dibuang ke perairan sekitarnya. Pengamatan dilakukan terhadap cara penjernihan air dan sifat fisika-kimia air seperti kadar oksigen, bahan organik, pH, kekeruhan, besi, sulphat dan lain-lain. Sedangkan sifat limbah yang dianalisa adalah temperatur kekeruhan, pH, karbon dioksida, bahan organik, BOD-5, padatan tersuspensi, kadar oksigen, dan asam sianida. Penilaian kualitas air didasarkan kepada standar air minum menurut Peraturan Menteri Kesehatan RI, Sk. Men. Kes. RI. No. 01/BIRHUKMAS/ 1/75. tgl 26 April 1975. Pemakaian standar tersebut disebabkan belum terciptanya standar air untuk industri tapioka dan karena tapioka digunakan sebagai bahan pangan. Penilaian terhadap limbah didasarkan kepada hasil pengukuran beberapa sifat fisika-kimia serta indikator adanya pertumbuhan organisme terutama ikan.
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Judul: Dampak Limbah Industri Tapioka terhadap Kualitas Fisika Kimia AirSungai sebagia Keperluan Perikanan
Abstrak: Tujuan penelitian ini ialah mengetahui dan mengindentifikasi dampak limbah industri tapioka terhadap kualitas fisika kimia air sungai bagi keperluan perikanan. Penelitian dilakukan di perairan S. Pangubuhan dan anak sungainya yaitu S. Kekah yang mendapat buangan limbah tapioka, di Kecamatan Terbanggi Besar - Lampung Tengah. Waktu penelitian bulan Maret, April dan September 1983. Analisis contoh air berdasarkan prosedur American Public Healt Association (1960, Swingle (1968) dan Hach Chemical Company Laboratory-model DR/2 Spectrophotometers.
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Judul: Mitochondrial DNA Gene Organization and Phylogenetic Relationship of Naja siamensis
Abstrak: Naja siamensis is one of Asiatic cobra in the Family of Elapidae, known as a cryptic snake. It has many morphological variations that lead to misidentification. Misidentification can cause the wrong concept in developing antivenom types due to high snakebite cases occur in Thailand. Thus, an accurate species identification using a molecular approach is crucially required. Mitochondrial DNA has been used widely in snake molecular studies. These studies were aimed to determine the arrangement of the N. siamensis partial mitochondrial genes using reptile-oriented primers and to reveal the phylogenetic relationship among other species of Asian cobra. DNA extraction was carried out based on the standard DNA salting-out protocol and was conducted by bioinformatics analysis using BLASTn and MEGA 6 software. Gene annotation was performed against N. kaouthia complete genome. A total of 3121 bp of N. siamensis mtDNA genes were sequenced consisting of partial of six regions: 16S rRNA, ND1, tRNA-Ile, CRII region, tRNA-Leu, tRNA-Gln, and COI genes. The mtDNA gene organization of N. siamensis was predicted to has a similar pattern with the common Elapidae mtDNA gene organization. This study showed that there is a monophyletic form in Naja genus and N. kaouthia is the closest species with N. siamensis based on partial 16S rRNA and ND1 gene.
Keyword: 16S rRNA, Elapidae, ND1, phylogenetic relationship