Judul: Fabrikasi dan Optimasi Sifat Fisis Film Nanokomposit NiFe2O4- Multiwalled Nanotube/PVA
Abstrak: Fabrication and characterization of NiFe2O4-MWNT/PVA nanocomposite film has been conducted. NiFe2O4-MWNT as a filler of nanocomposite film were gained using simple mixing method from solution containing Fe(NO3)3.9H2O, Ni(NO3) 2.6H2O and MWNT. The filler was mixed with Polyvinyl Alcohol (PVA) with some various concentrations and dried in room temperature for 24 hours. X-Ray Diffraction (XRD) analysis were used to determine the presence and the crystal size of NiFe2O4, LCR meter were used to determine the conductivity of each sample while VSM characterization were used to determine the magnetic properties of each samples. Analyses of XRD showed that the phase of NiFe2O4 were begin to formed especially in sample D (2.5 ml filler and 2.5 ml PVA). Based on electrical propeties using LCR meter, as increasing the consentration of the filler in nanocomposite film will also increase the conductivity of all sample, sample D has the biggest conductivity (1.92 x 10-6 S/cm) whereas based on M-H hysterisis graph from VSM characterization known that the addition of the filler can change the magnetic properties of each samples became paramagnetics.
Keyword: Crystal size,, Physical properties, NiFe2O4-MWNT/PVA, Nanocomposite

Judul: Production of Polyvinyl Alcohol-Lignin Nanocomposite Film with Oil Palm Empty Fruit Bunch as Lignin Source
Abstrak: One effort to reduce the food spoilage from microorganisms is by using active packaging that can maintain the quality of the products. Lignin is a material that has antimicrobial properties, antioxidants, anti-UV, and a good reinforcement agent in matrix polymers which is a potential candidate of active packaging material. One source of lignin is oil palm empty bunches (OPEFB). The purpose of this study was to produce lignin nanoparticle (nanolignin) from OPEFB and produce its PVA-nanocomposite. Nanolignin was produced by mechanical treatment by using ultrasonication. PVA-nanocomposites were produced from the mixture of PVA with different molecular weight (degree of polymerization 500 and 2000) as the matrix with the addition of nanolignin (0, 1, 3, and 5 wt%) as the fillers. The casting method was implemented to produce nanocomposite. The morphology of film was observed by using scanning electron method (SEM), chemical component by fourier transform infrared (FTIR), transparency by UV-vis spectrometer, mechanical properties by tensile strength analysis and dynamic mechanical analysis (DMA), and thermal properties by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The addition of nanolignin until 3 wt% increased crystallinity, tensile strength, and thermal properties of nanocomposite films. However, the addition of 5 wt% of nanolignin showed that the nanolignin is well dispersed in the low molecular weight of PVA matrix, which was shown by the high Young’s modulus and low crystallinity. Nanolignin is a good filler for the next-generation functional nanocomposite, especially in the manufacturing of the active packaging.
Keyword: mechanical properties, nanocomposite, nanolignin, oil palm fruit bunch (OPEFB), polyvinyl alcohol (PVA)

Judul: Psittacosis Sebagai Zoonosis Penting Yang Berasal Dari Burung
Abstrak: Psittacosis atau ornithosis adalah penyakit menular dari burung kepada manusia. Agens penyebab psittacosis termasuk ke dalam virus psittacosis-lymphogranuloma venereum group yang disebut Chlamydia psittaci. C. psittaci hanya dapat berkembang biak di dalam jaringan hidup tetapi peka terhadap antibiotik. Penyebaran penyakit ini sangat luas, terdapat hampir di seluruh dunia. Di Indonesia penyakit ini belum pernah di diagnosa, tetapi mengingat terdapat demikian banyaknya jenis burung maka diperkirakan psittacosis ini sudah ada. Kasus pada manusia pertamakali ditemukan oleh Ritter pada tahun 1879, di Eropa. Waktu itu dikenal sebagai pneumotyphus. Chlamydia psittaci tidak hanya sebagai penyebab infeksi pada burung, juga bisa menyebabkan infeksi pada mamalia diantaranya sapi, kerbau, kambing, domba, babi dan kucing. Pada kucing dikenal sebagai feline pneumonitis. Pada domba atau kambing mengakibatkan enzootic abortion. Pada burung, kalkun merupakan unggas paling rentan diikuti oleh burung psittacine dan burung lain di luar famili psittacidae. Virulensinyapun berbeda-beda. Yang berasal dari kalkun bervirulensi tinggi, sedangkan yang berasal dari burung merpati bisa bervirulensi tinggi bisa juga bervirulensi rendah. Penularan terjadi melalui kontak langsung maupun ti- dak langsung. Penularan melalui telur tidak terjadi. Umumnya penyakit ini memperlihatkan gejala klinis berupa deman, lesu, lemah, anorexia, kurus, diarrhea ber- warna kekuningan, discharge dari mata dan hidung, conjunc- tivitis. Gejala khas pada kalkun adalah istirahat dengan sternum sebagai dasarnya, karena adanya tekanan dari bagian perut yang sakit. Sedangkan pada manusia memperlihatkan adanya demam, kadang-kadang merasa dingin, lesu, sakit kepala yang hebat, sakit pada bagian belakang badan dan photophobia…dst
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