Judul: Identification of Pseudomonas sp. and Shigella sp. from the Feces of Proboscis Monkeys (Nasalis larvatus), Endemic Primates of Borneo
Abstrak: Bakteri Shigella sp. dan Pseudomonas sp. merupakan bakteri patogen penyebab penyakit pencernaan paling umum pada hewan primata dan non human primate. Penelitian ini bertujuan mengisolasi dan mengidentifikasi bakteri patogen Pseudomonas sp. dan Shigella sp. yang terdapat pada feses Bekantan (Nasalis larvatus). Sampel yang digunakan adalah delapan sampel feses bekantan koleksi dari Laboratorium Bakteriologi, Divisi Mikrobiologi Medik, Sekolah Kedokteran Hewan dan Biomedis, Institut Pertanian Bogor. Isolasi dilakukan dengan metode cawan gores pada media MacConkey Agar (MCA) dan identifikasi dengan uji biokimia dan uji gula-gula mengacu pada Cowan and Steel’s Manual for the Identification of Medical Bacteria.Hasil isolasi dan identifikasi diperoleh tiga isolat yang memiliki karakteristik sesuai Shigella sp. dan satu isolat bakteri Pseudomonas sp., Shigella sp. and Pseudomonas sp. are the most common pathogenic bacteria that cause gastrointestinal diseases in primates and non-human primates. This study aims to isolate and identify the pathogenic bacteria, Pseudomonas sp. and Shigella sp., found in the feces of proboscis monkeys (Nasalis larvatus). A total of eight proboscis monkey feces samples were collected from the Bacteriology Laboratory, Medical Microbiology Division, School of Veterinary Medicine and Biomedical Medicine, Bogor Agricultural University. Bacteria in proboscis monkey feces were isolated by streak plate methode on MacConkey Agar (MCA) media and identification by biochemical test and sugar test, according to Cowan and Steel’s Manual for the Identification of Medical Bacteria. The test results confirmed that these bacteria accurately presented three isolates matching characteristics to Shigella sp. and one isolate of Pseudomonas sp.
Keyword: pathogenic bacteria, proboscis monkey Pseudomonas sp., Shigella sp..

Judul: Identification of Lactic Acid Fermentative Bacteria from the Faeces of Proboscis Monkey (Nasalis larvatus), Kalimantan Endemic Primates
Abstrak: Bakteri Asam Laktat (BAL) adalah golongan bakteri yang memiliki peran dalam pencernaan dengan sifat tidak toksik bagi inangnya dan mampu menghasilkan beberapa senyawa yang dapat mengeliminasi bakteri patogen. Penelitian ini bertujuan mengidentifikasi jenis bakteri asam laktat yang terdapat pada feses bekantan. Sampel feses yang diinokulasikan pada media MRSA (de Mann Rogosa Sharpe Agar), Pengujian biokimia dengan uji oksidase, Triple Sugar Iron Agar (TSIA), uji urease, uji IMViC. Uji IMVIC sendiri terdiri dari beberapa uji yaitu uji Sulfide Indol Motility (SIM), uji Methyl Red-Voges Proskauer, dan uji Simmon’s Citrate, serta pengujian fermentasi karbohidrat yang terdiri dari glukosa, laktosa, sukrosa, maltosa, manitol, dan dulsitol. Berdasarkan hasil uji yang dilakukan didapatkan jenis bakteri Lactobacillus buchneri, Lactobacillus brevis, dan Lactobacillus plantarum, Lactic Acid Bacteria (LAB) are a group of bacteria that have a role in digestion with non-toxic properties to their host and can produce several compounds that can eliminate pathogenic bacteria. This study aims to identify the types of lactic acid bacteria found in proboscis monkey feces. The method used was a simple test with fecal samples inoculated on MRSA media (de Mann Rogosa Sharpe Agar), biochemical testing with oxidase test, Triple Sugar Iron Agar (TSIA), urease test, IMViC test. The IMVIC test itself consists of several tests, namely the Sulfide Indole Motility (SIM) test, Proskauer's Methyl Red-Voges test, Simmon's Citrate test, and carbohydrate fermentation testing consisting of glucose, lactose, sucrose, maltose, mannitol, and Dulcitol. Based on the results of the tests carried out, it was found that the types of bacteria Lactobacillus buchneri, Lactobacillus brevis, and Lactobacillus plantarum.
Keyword: Lactic acid bacteria, monkey feces, primates

Judul: Elektrodeposisi Film Tipis Semikonduktor Cu2ZnSnS4 (CZTS) pada Substrat Kaca ITO
Abstrak: Semiconductor Cu2ZnSnS4 (CZTS) thin film that can be used as absorber layers on solar cell module was made via electrodeposition method. CZTS thin film was electrodeposited on the surface of a silicate glass coated with a thin layer of indium tin oxide (ITO). Deposition process was done using potentiostatic mode at room temperature with a potential of 1.05 V for 30, 45, and 60 minutes, followed with annealing the film at 2 different temperatures, 500 ºC using furnace and 180 ºC using hot plate, both treatments for 45 minutes in N2/H2S atmosphere. The X-ray difractograms were analyzed using Match 2 program and showed that the CZTS thin films had kesterit crystalline structure, with a low percentage of CZTS phase. The thin film also contained secondary phases such as Cu2S, ZnS, and SnS. The obtained CZTS thin films had a thickness between 1.039 and 1.676 μm. Absorption study showed that the band gap energy of CZTS thin films which was annealed using furnace ranged from 1.50 to 1.52 eV, whereas that annealed using the hot plate was not observed. The band gap energy value showed that CZTS thin films can be used as sunlight absorber layers on solar cell. The formation of CZTS crystal film on this investigation was effectively performed using furnace annealing process at a temperature of 500 ºC with deposition time of 45 minutes.
Keyword: Thin film, Electrodeposition, Cu2ZnSnS4