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: Validasi Metode Analisis Mineral Ca, Zn, dan Mg dalam Makanan Bayi Menggunakan Instrumen Flame-AAS
Abstrak: Metodeanalisisuntukmineral Ca, Zn, dan Mgmenggunakan Flame Atomic Absorption Spectrometry (F-AAS) telah tervalidasi. Kurva kalibrasi instrumen telah ditentukan dari 0 hingga 4,0µg/mL untuk standar ca, 0 hingga 1,0 µg/mL untuk standar Zn, dan 0 hingga 1,2µg/mL untuk standar Mg, dengan nilai koefisien korelasi lebih besar dari 0,990 untuk ketiga mineral. Limit deteksiinstrumen (LDI) telah dideteksi pada konsentrasi 0,0107;0,0128;0,0086µg/mL untukCa, Zn, dan Mg secara berturut-turut. Limit kuantitasi (LOQ) ditentukan pada konsentrasi 0,0357; 0,0426; 0,0285 µg/mL untuk Ca, Zn, dan Mg. Rekoveri dengan menambahkan larutan standar mineral pada sampel makanan bayi untuk konsentrasi rendah diketahui pada 85,82;84,81;108,67%, konsentrasi sedang pada 95,41; 108,11; 102,49%, dan konsentrasi tinggi pada 95,60; 108,04; 105,68% untukCa, Zn, dan Mg. Nilai intra lab reprodusi bilitas (WLR) adalah 9,52% untukCa, 4,08% untuk Zn, dan 1,55% untuk Mg. Ketangguhan diuji dengan menggunakan pelarut HNO30,05M dibandingkan dengan pelarut air demineral memiliki perbedaan yang nyata pada Poos untuk Ca dan Zn (1,95x10 dan 3,71x10-10).
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, F-AAS, Validation, Mineral, Infant Food

Judul: The addition of a noun word graph dictionary module in bogordelftconstruct
Abstrak: Knowledge Graph is a new method in Natural Language Processing that is used to describe human language and displaying it into a graph form. BogorDelftConStruct is a tool to analyze Indonesian text, developed by Deni Romadoni (2009). The tool has limited feature, opening many opportunities to add some other features. The goal of this research is to develop a noun word graph dictionary module and add it in BogorDelftConStruct. The patterns of the noun word-graph are based the research of Saleh (2009). In this research, of the 20 patterns in Saleh (2009) only 13 patterns are used, since some of word graph patterns which have the same affix and also have the different meaning. As many as 144 nouns were used in scenario testing, with 1 error was generated (99,33% accuracy).
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