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: Pembuatan Film Tipis Cu2ZnSnS4 sebagai Lapisan Penyerap Cahaya pada Sel Surya Menggunakan Metode Elektrodeposisi
Abstrak: Thin film of Cu2ZnSnS4 (CZTS) is an alternative semiconductor used as light absorber layer on solar cell. CZTS can replace silicon that commonly used as commercial semiconductor. The advantage of using CZTS as absorber layer is due to the abundance of its chemical composer on earth, and its high value of absorption coefficient. The absorber layer was made by using electrodeposition method on ITO glass substrates. The films were deposited at room temperature using potentiostatic mode with a potential of –1.05 V for 30, 45, and 60 minutes. After that, the films were annealed at two different temperatures, 180 ºC and 500 °C, for 45 minutes in N2/H2S atmosphere. Based on X-ray diffraction analysis, the polycrystalline thin film obtained fall into kesterite crystal phase. This type of crystal was obtained when the CZTS was annealed at 500 °C in H2S/N2 atmosphere. The value of optical band gap energy for the CZTS thin film was 2.2 eV with the film thickness about 1.228–6.366 μm. The sample of CZTS with electrodeposition time of 45 minutes and annealing temperature of 500 °C showed the best result and in conformity with absorber layers criteria for solar cells.
Keyword: semiconductor, ITO glass, CZTS thin film, electrodeposition