Judul: Efek suplementasi multivitamin mineral terhadap kadar Malondialdehid (MDA) plasma remaja putri
Abstrak: The objective of this study was to analyze effect of multivitamin mineral (MVM) supplementation to malondyaldehide plasma of female adolescent. Design of this study was the quasi experimental with control, double blind. Samples were First Common Year female students of Bogor Agricultural University (TPB-IPB). The 28 samples consisted of 11 anemia and 17 non-anemia were divided into control and intervention group. There were control anemia group (6 samples), intervention anemia group (5 sampels), control non-anemia group (7 samples) and intervention non anemia group (10 samples). Intervention group received MVM supplement 15 ml/day that contained vitamin B1, vitamin B2, vitamin B3, vitamin B6, vitamin B12, vitamin C, ferro gluconate, calcium gluconate, mangan sulfate, and zinc sulfate, whereas control group received placebo syrup. The malondialdehyde plasma was analyzed by TBARS method. The statistical test (Anova) showed that malondialdehyde were relatively homogenous in baseline and also endline (p>0,05). The results of paired sample t-test showed that there were no significant changing in plasma malondyaldehide concentration in all groups (p>0.05) respectively. Based on this result, we concluded that there was no influence of multivitamin mineral suplementation to plasma malondialdehyde on female adolescent.
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Judul: Pengaruh suplementasi multivitamin mineral terhadap status gizi, kadar hemoglobin dan tingkat kebugaran fisik mahasiswi TPB IPB
Abstrak: The aims of the study are to examine the influence of multivitamin mineral supplementation on the nutritional status, hemoglobin concentration and physical activity of Bogor Agricultural University First Common Year female students. The previous research showed that Bogor Agricultural University First Common Year female students have a high prevalence of anemia (Briawan 2008). The design of the research was a double blind-quasi experimental. Subjects consisted 27 people who were sistematically allocated into two groups. The first group consisted of 14 people (28.5% anemia), received multivitamin mineral (MVM) and the second group consisted of 13 peopole (38.4% anemia), received placebo (control group). The supplements contained of vitamin B1, B2, B3, B6, B12, vitamin C, Ca, Mn, Fe and Zn which were distributed and consumed everyday during 8 weeks. The data used were primary data in the form of characteristic samples, anthropometry (weight, height and percent body fat), food consumption, level of fitness results of speed (running at 60 meter), endurance and muscle strength (sit-up, push-up and vertical jump), agility (shuttle run 4x10 meter) and VO2max values (bleep test). The results of statistical test (paired samples t-test) showed that there were significant difference of speed (sample at 60 meter of running) (MVM: p>0,060; placebo: p<0,029), push-up (MVM: p<0,008; placebo: p<0,029), sit-up (MVM: p<0,000; placebo: p<0,020) and bleep test (MVM: p<0,011; placebo: p<0,000), but there were no significant difference (p>0,05) in vertical jump and shuttle run test in both MVM and placebo groups.
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Judul: Aproksimasi Fungsi Sinus dan Kosinus sebagai Kombinasi Linear dari Fungsi Eksponensial
Abstrak: Salah satu gagasan yang menarik dalam matematika adalah aproksimasi suatu fungsi oleh fungsi lain. Sebagai contoh, fungsi polinom dapat diaproksimasi menggunakan deret Taylor atau fungsi persamaan diferensial dapat diaproksimasi menggunakan deret Fourier. Adapun fungsi yang dapat mengaproksimasi fungsi lain salah satunya adalah fungsi eksponensial. Kemungkinan mengaproksimasi fungsi dengan kombinasi linear dari fungsi eksponensial dari bentuk eˣ, e²ˣ, ... dianggap sebagai perkembangan sejajar dengan gagasan Deret Taylor yang mengaproksimasi fungsi dengan kombinasi linear dari segi fungsi kuadrat. Fungsi sin x dan cos x digunakan sebagai target untuk menilai seberapa baik aproksimasi yang dilakukan oleh fungsi yang diberikan. Aproksimasi fungsi sinus dan kosinus menggunakan hampiran Taylor lebih akurat dibandingkan dengan aproksimasi menggunakan fungsi eksponensial.
Keyword: Aprosimaksi eksponensial, aproksimasi fungsi, aprosimaksi Taylor, fungsi eksponensial