Judul: Analisis Biplot dan Procrustes Terhadap Perubahan Kurikulum TPB IPB Angkatan 2010/2011 dan 2011/2012
Abstrak: Bogor Agricurtural University is one of the universitity which applied Tingkat Persiapan Bersama (TPB) program. The purpose is to make an equalization of the basic science lessons quality and understanding for the first year students so they could continue the advance education in each of their faculty. Since TPB program was applied until now, there were many changes that were made to upgrade the quality and efficiency of the program. The last change was made for the class of 2011/2012 with the change on Mathematics, Biology, Physics, and Chemistry course. This study aims is to describe and explore the impact of the curriculum changes which is applied from the class of 2010/2011 to 2011/2012. The Method is comparing the academic achievement between both class with descriptive statistical analysis : scatterplot, boxplot, and biplot and using Procrustes analysis to measure the similarity between both class. Biplot analysis map the departments as object and courses as variable. The result of this study shows that the changes of curriculum which were applied to class of 2011/2012 increase the academic achievement of IPB department’s. Procrustes analysis shows that the biplot of the class of 2010/2011 and 2011/2012 configuration have a 67.4% similarity.
Keyword: Bogor Agricultural University (IPB), TPB-IPB, Procrustes, GPA, Biplot

Judul: Konfigurasi Program Studi di IPB berdasarkan Prestasi Mahasiswa TPB IPB
Abstrak: Biplot gives an overview of the study program configuration based on First Year students’ Achievement. The data used in this study are the scores of 14 subjects and grade point average (GPA) of first year students in academic year of 2008/2009-2010/2011. In this study, goodness of fit of the biplot is analyzed via Procrustes analysis. Data exploration is carried out using variable frequency, average score of subjects, GPA, boxplot of variables, and Spearmant’s correlation matrix. Procrutes analysis is used to measure similarity between two study program configurations according to whole data matrix, the two dimensional variable matrix. The results show that the study program configuration in academic year of 2009/2010. Moreover, the biplot obtained from the three academic years produce goodness of fit of the data matrix less than 65%. This means that there will be distortion of the images obtained from the biplot, and therefore, the conclutions should be supported by the results of data exploration. The results of this study are expected to provide information of the advantages for each study program at IPB to improve their academic quality.
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Judul: Isolasi senyawa sinamaldehida dari minyak kulit kayu manis sedagai antioksidan
Abstrak: Cinnamaldehyde is a major essential oil component of cinnamon bark. Cinnamon oil was isolated by using water distillation method that yielded 0.93% (w/w) or 0.95% (v/w). Gas chromatography mass spectrometry (GCMS) of cinnamon oil showed that the main component of the oil is a trans-cinnamaldehyde 32.8% and 3-phenyl-2-propenal 22.9%. The oil was further isolated for cinnamaldehyde by using preparative thin layer chromatography method at Rf of 0.62. GCMS analysis showed that cinnamaldehyde content was 89.1%. Furthermore, the cinnamaldehyde was tested for its antioxidant activity. The isolated product has antioxidant activity with IC50 of 5.06 mg/L as compared with positive control using butylated hydroxytoluene, which has the activity of 10.4 mg/L.
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