Judul: Rancangan Proses Pengelolaan Sampah Organik dengan Menggunakan Mikroba.
Abstrak: Law No.18/2008 on Waste Management is a basis of the importance of waste management. Lately to manage waste, microorganisms as decomposer of organic matter is often. So that the objective of this research is to produce a design process organic waste management that can be implemented simply in the community and give economic benefits. This research method starts from the breeding of bacteria, treatment of bacteria that can be used to decompose organic waste,and making a simple design. The best treatment that is chosen is the treatment giving the bacteria at 2nd week ( POC2 ) with bacterial composition was increased to 20% so that the assumed rate of decomposition can achieve 0.43%/day. Design created a simple unit with a length of 3 m, wide 2 m, and high and 0.75 m and can accommodate 100 people waste for 14 days, after 14 days from the addition of bacteria and on day 28 the processed organic waste in the form of liquid fertilizer can be used. C/N ratio is obtained at the end of the 17.115 still acceptable in SNI 19-7030-2004. Windrow pile design is also created as a temporary storage area before entering the processing unit.
Keyword: waste management, organic waste, C/N ratio, bacteri

Judul: Konversi sampah organik pasar dengan sistem fermentasi media padat menjadi biogas dan pupuk organik.
Abstrak: In 2010 Indonesia produced 200 thousand tons of waste everyday. It causes problems for the society and for environment. The purposes of this research are to design and get an optimal process condition for solid medium fermentation to convert organic waste from traditional market into bioenergy and organic fertilizer, to characterize biogas, digestate, and leachate. The experiments were conducted with 1.5 L and 10 L reactors . Composition of organic waste from traditonal market that gave higest volume of biogas are banana leaf 7.5%, cornhusk 24.2%, bitter melon 14.8%, cabbage 19.9%, chicory 6.2%, water spinach 8.0%, mustard 8.0%, carrots 11.5% (w/w). It produced 4500 ml biogas/kg biomass and the maximum production was reached within 17 days. This equal to biogas production of 37.63 ml biogas/gram VS. Fermentation process in 10 liter reactor with adition of 75% feed, 50% of feed, and 100% feed produced 12378 ml, 10908 ml, and 16707 ml biogas, respectively leachate consists nitrogen 473-4500 ppm, phosphat 47-150 ppm, and COD 8333-12500 mg/l, while the digestate consists of carbon 28-49%, nitrogen 0.7-1.7%, phosphat 0.2-0.4%, and COD 16000-18000 mg/kg. Concentration of methane in biogas is still low and hence futher experiments needed to increase methane concentration. Keywords : organic waste, biogas, digestate, leachate, solid state fermentation
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Judul: Karakteristik Anatomi Skelet Kepala Buaya senyulong (Tomistoma schlegelii).
Abstrak: Buaya sepit atau senyulong (Tomistoma schlegelii) merupakan jenis buaya asli Indonesia yang berhabitat di sungai-sungai Sumatera, Kalimantan, dan juga pedalaman Sulawesi. Salah satu ciri khas buaya senyulong adalah bentuk moncong yang runcing dan sempit, namun hingga saat ini informasi mengenai struktur skelet kepala buaya senyulong sangat terbatas. Penelitian ini bertujuan untuk mempelajari karakteristik anatomi skelet kepala buaya senyulong yang dikatikan dengan fungsi dan perilakunya. Penelitian dilakukan secara eksploratif dengan melakukan pengamatan, pencatatan, dan pengambilan gambar dari skelet kepala buaya senyulong. Skelet kepala berukuran panjang 70 cm, lebar 29 cm, dan tingggi 17 cm dengan permukaan kasar pada os nasale, os frontale, os maxilla, os mandibula, os lacrimale, os jugale. Jumlah gigi pada buaya ini sebanyak 78 buah, terdiri dari 4 buah gigi premaxila, 16 buah gigi maxila, dan 19 buah gigi mandibula. Pada regio orbitalis ditemukan dua pasang fenestrae temporales yang berkembang baik. Fenestra supratemporale merupakan lubang oval yang membentang di sepanjang os parietale. Fenestra infratemporale berbentuk segitiga dan dibatasi oleh os squamosum, os postorbitale, os jugulare, dan os quadratum. Os mandibula hewan ini mempunyai symphysis mandibularis yang panjang yaitu garis yang melintang di corpus mandibulae. Secara fungsional ukuran symphysis mandibularis berkaitan dengan adaptasi hewan terhadap diet makan.
Keyword: kepala, moncong, Tomistoma schlegelii