Judul: Perhitungan Biaya Produksi Mebel Tunggak Jati di Kecamatan Randlubatung - Jawa Tengah
Abstrak: Sebagai bahan limbah, tunggak jati sebenarnya masih bermanfaat dan mempunyai nilai ekonomi yang cukup tinggi, yaitu sebagi bahan baku untuk mebel, kerajinan tangan seperti jam dinding, vas bunga, patung dan perabotan rumah tangga. Bahkan saat ini mebel dan kerajinan gembol jati sudah diekspor, sehingga nilainya menjadi lebih tinggi. Penelitian ini bertujuan untuk mengetahui dan memepelajari mekanisme pengadaan tunggak kayu jati, dan analisa biaya produksi mebel khususnya meja dan kursi berbahan baku tunggak kayu jati, dalam rangka perhitungan harga pokok dan keuntungan yang diperoleh.
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Judul: Analisis Biaya Produksi dan Profitabilitas Furnitures dan Housing Components Jati (Studi Kasus di Industri Kayu 1 Sub Brumbung, Perum Perhutani Jawa Tengah)
Abstrak: Adanya peningkatan persaingan produsen furnitures dan housing components menyebabkan setiap perusahaan dalam industri ini perlu melakukan analisis biaya produksi dan profitabilitas. Hal demikian untuk menginformasikan perusahaan mengenai struktur biaya produksi, dan membantu perusahaan untuk mengelola pengeluaran guna mencapai tujuannya. Hasil penelitian menunjukkan biaya produksi, return on investment, dan break even point dari furnitures masingmasing Rp39.3 juta/m3, 34.9%/th dan 4.3 m3/th; sedangkan nilai untuk housing components masing-masing Rp37.9 juta/m3, 16.7%/th dan 57.5 m3/th. Selain itu, perusahaan harus memperhatikan dalam penggunaan kayu jati ketika biaya untuk kayu jati lebih dari 80% dari biaya produksi.
Keyword: biaya produksi, break even point, furnitures, housing components, return on investment

Judul: DNA Extraction and Characterization of Salmonella‟s Lytic Bacteriophage Genome
Abstrak: Bacteriophages are ubiquitous in nature and are known to proliferate wherever their bacterial hosts exist. Their virion particles can exist independently outside the host, however all phages are need their host to propagate. Several phages are highly specific to host cell surface receptors and any slight changes in structure results in little or no interaction between the phage and its host. Salmonella‟s phage isolated from sewage water where their bacteria exist. Three isolated of phages (phages 15, 19 and 38) were used in this research that concentrated using three types of methods. PEG/ NaCl method was firstly used to concentrate the phages based on their molecular weight to precipitate the phage particles during centrifugation. The second method was Scraping Plaque method. In this method, overlay plaques were scraped and collected in SM buffer to get phage concentrates. Enrichment method was the last method used to concentrate the phages. Phage genome isolation was done using two methods i.e. EDTA/SDS and Proteinase K methods. The first method was done using DNase I to eliminate bacterial DNA followed by SDS/EDTA treatment to release phages DNA and phenol-chloroform-isoamyl alcohol to extract the DNA. DNA was collected by isopropanol extraction. While in Proteinase K method, bacterial DNA was eliminated by DNase I and Proteinase K/SDS was used to degrade phages capsids and ethanol for DNA precipitation. The result showed that PEG/NaCl method resulted the highest phage concentration for phage 15 and phage 19, while scrapping method was the highest for phage 38. The quantity and purity of extracted DNA were low for PEG/NaCl and Scraping methods, while Enrichment method was higher indicated higher purity. Run on agarose gel electrophoresis of extracted DNA confirmed that Enrichment method results were the best while scraping and PEG/NaCl method was appeared smear background. Based on DNA genome size determination, the bacteriphages of Salmonella sp were comparable with other study of Salmonella phages. Phage P15 with genome size of 39,5 kb was close to phage epsilon15. Phage P19 with genome size of 41 kb was close to phage ST160. And phage P38 with genome size of 48,5 kb was close to phage Gifsy-1.
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