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: Identifications of Gastrointestinal Parasites in Long-Tailed Monkey (Macaca fascicularis) at The Primate Research Center of IPB  University
Abstrak: Parasitic infection is a problem that is often found in nonhuman primates, including the long-tailed monkey (Macaca fascicularis). Parasitic infections in the digestive tract need to be concerned because they can interfere with the well-being of long-tailed monkeys in captivity and have the potential to become a source of zoonotic diseases that can spread to humans. This study aims to identify gastrointestinal parasites in long-tailed monkey feces at the Primate Research Center of IPB University. A total of 69 samples of long-tailed monkey feces were examined using native method and trichrome staining to identify parasites. The results showed that there were Entamoeba spp., E. polecki, E. coli, E. histolytica/E. dispar, Endolimax nana, Balantidium coli, Iodamoeba bütschlii, Giardia sp., and Ancylostomatidae, allegedly derived from the water in PSSP IPB. Change in stool consistency is assumed to be due to factors other than parasitic infection., Infeksi parasit merupakan salah satu masalah yang sering ditemukan pada satwa primata, termasuk monyet ekor panjang (Macaca fascicularis). Infeksi parasit pada saluran pencernaan perlu diwaspadai karena dapat mengganggu kesehatan monyet ekor panjang di penangkaran dan berpotensi menjadi sumber penyakit zoonotik yang dapat menyebar kepada manusia. Penelitian ini bertujuan mengidentifikasi parasit gastrointestinal pada feses monyet ekor panjang di Pusat Studi Satwa Primata (PSSP) IPB. Sebanyak 69 sampel feses monyet ekor panjang diperiksa menggunakan metode natif dan pewarnaan trichrome untuk mengidentifikasi parasit. Hasil pemeriksaan menunjukkan bahwa terdapat Entamoeba spp., E. polecki, E. coli, E. histolytica/E. dispar, Endolimax nana, Balantidium coli, Iodamoeba bütschlii, Giardia sp., dan Ancylostomatidae, yang diduga bersumber dari air yang digunakan di PSSP IPB. Perubahan konsistensi feses diduga diakibatkan faktor selain infeksi parasit.
Keyword: zoonoses, Macaca fascicularis, gastrointestinal parasites, long-tailed monkey

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