Judul: Deteksi Residu Antibiotik pada Hati Itik Berasal dari Peternakan di Kabupaten Bogor
Abstrak: The research was aimed to detect the existence of antibiotic residue in ducks liver at poultry in Bogor District. There were 53 samples which were taken from 5 Sub-districts in Bogor District. The research was done by bioassay method. The result showed that antibiotic residue in ducks liver was detected positive (32.1%) from aminoglicoside and macrolide group. Antibiotic residue came from poultry in Ciomas Sub-district (29.4%), Gunung Sindur (11.8%), Jasinga (35.3%), and Jonggol (23.5%). Based on aminoglicoside group, it was 3.77% came from Jonggol Sub-district (12.5%), while tetrasiclin and penicilin was not found. In Klapanunggal Sub-district was detected negative antibiotic residue in the result of testing. Therefore, it is needed to control toward the excistence of antibiotics residue in order to guarantee the consumens health
Keyword: duck., bioassay method, antibiotic residue

Judul: Residu Antibiotik pada Pangan Asal Hewan di Kota Bogor Tahun 2015-2018 (Studi Kasus).
Abstrak: Residu antibiotik pada pangan asal hewan dapat menimbulkan berbagai dampak negatif, oleh karena itu Dinas Pertanian Kota Bogor setiap tahun melakukan pengawasan terhadap kejadian tersebut. Studi kasus ini dilakukan untuk mengevaluasi adanya residu antibiotik pada pangan asal hewan di Kota Bogor tahun 2015-2018. Data primer diperoleh dengan melakukan wawancara kepada Staf Dinas Pertanian Kota Bogor dan data sekunder diperoleh dari monitoring pangan asal hewan Dinas Pertanian Kota Bogor tahun 2015-2018. Analisis data dilakukan secara deskriptif. Kasus residu antibiotik tertinggi terdapat pada golongan makrolida (10), aminoglikosida (7), dan penisilin dan tetrasiklin (2). Kasus residu antibiotik terdapat pada susu sapi 20.0% (5/25), telur ayam 18.5% (5/27), daging sapi 13.6% (3/22), telur itik 10.0% (2/20), telur puyuh 5.2% (1/19), daging ayam 3.8% (1/26), dan yoghurt 100.0% (1/1). Kasus residu antibiotik golongan makrolida dan aminoglikosida cenderung meningkat pada tahun 2015-2017, akan tetapi menurun pada tahun 2018. Kasus residu antibiotik penisilin dan tetrasiklin cenderung menurun pada tahun 2015-2016, dan tidak ditemukan pada tahun 2017- 2018.
Keyword: Antibiotik, Kota Bogor, pangan asal hewan, residu antibiotik

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