Judul: Uji Validasi Melamin dalam Susu Bubuk dengan Metode LC-MS (Liquid Chromatography-Mass Spectrofotometry) dan Uji Toksisitas pada Artemia salina
Abstrak: Melamine is an organic compound in the form of white crystals and a bit difficult to dissolve in water. Method validation is a procedure that is used to prove the results of an analytical method is valid, accurate and precise. Parameter validation methods include system suitability, linearity recovery, limit of detection (LOD) and limit of quantification (LOQ). Liquid Chromatography-Mass Spectrofotometry (LCMS) analysis method with a standard melamine has good accuracy and precision with a relative standard deviation value of 1.18% (system suitability test) and the mean recovery generated by 89.13 ± 9.47%. Limit of detection (LOD) and limit of quantification (LOQ) obtained respectively at 5 ppb and 7 ppb, linearity with line equation y = 71,343,428 + 1371748x and correlation coefficient (r) 0.9367. The result of BSLT get LC50 are in range 0.02-0.1 ppm (0.02 ppm ≤ LC50 ≤ 0.1 ppm) and if using microsoft excel program LC50 obtained at 0.036 ppm or 0.036 μg / mL. LC50 values showed that was toxic
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Judul: Analisis Selen Dalam Susu Bubuk Menggunakan Spektrometri Emisi Atom-Plasma Gandeng Induktif dan Spektrometri Serapan Atom Nyala
Abstrak: Selenium is an essential micromineral which can be toxic in high doses. This research compared 2 methods of selenium analysis in milk powder, namely by inductively coupled plasma-atomic emission spectrometry (ICP-AES) and flame atomic absorption spectrometry (FAAS), based on the linearity, limit of detection and quantification, precision, accuracy, and robustness, and measurement of 4 milk powder samples with different brand. Both ICP-AES and FAAS methods had good linearity with coefficient of determination higher than 0.99. Limit of detection and quantification for ICP-AES were 0.444 and 1.480 μg/L, not as good as FAAS which were 0.105 and 0.350 μg/L, respectively. In the other hand, the ICP-AES method was more precise and accurate than FAAS, indicated by lower relative standard deviation value and by recovery value ranging between 80 and 110%. Robustness test showed that destruction time effected the selenium concentration measured by ICP-AES, but had no effect on FAAS measurement. Four milk powder samples showed 4‒84% difference obtained between measurement ICP-AES and FAAS. From these results, the more precise and accurate ICP-AES methods was more recommended for selenium content measurement in milk powder.
Keyword: selenium, milk powder, ICP-AES, FAAS

Judul: Peranan Jasa Transportasi dalam  Menunjang Pembangunan Wilayah  Kaitannya dengan Pelaksanaan  Otonomi Daerah di Provinsi Papua  Khususnya Kabupaten Jayapura
Abstrak: Ketimpangan pembangunan yang terjadi selama Orde Baru telah memicu disintegrasi bangsa, salah satu daerah yang diisukan terancam disintegrasi sebagai akibat ketimpangan pembangunan pada reszim orde baru adalah Provinsi Papua, sehingga untuk meredam aspirasi disintgrasi, dimasa reformasi Provinsi Papua ditetapkan sebagai daerah yang menerima Otonomi Khusus. Dengan adanya otonomi khusus ini diharapkan pemerintah daerah lebih leluasa mengabil kebijakan yang disesuaikan dengan aspirasi dan prioritas permasalahan yang dihadapi masyarakat.
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