Judul: Daging Artifisial Zat Besi sebagai Alternatif Pangan Vegetarian Pencegah Anemia.
Abstrak: Vegetarian merupakan kelompok rentan terhadap risiko anemia. Hal ini disebabkan oleh rendahnya penyerapan zat gizi besi dalam bentuk non heme. Tujuan dari penelitian ini adalah menghasilkan formula daging artifisial melalui pemanfaatan tepung ubi (Ipomoea batatas L) untuk mengurangi penggunaan tepung gluten serta tinggi kandungan zat besi sebagai alternatif pangan vegetarian pencegah anemia. Penelitian ini merupakan eksperimental studi dengan rancangan acak lengkap. Formula terpilih didasarkan atas beberapa kriteria keputusan yakni nilai keseluruhan hedonik (kesukaan), bioavailabilitas Fe dan biaya produksi. Kandungan gizi formula terpilih per 100g yaitu 63.22g air, 0.39g abu, 21.39g protein (sumber protein), 0.07g lemak (rendah lemak), 14.95g karbohidrat dan 8.44mg zat besi (tinggi besi). Nilai bioavailabilitas besi produk sebesar 28.83% (setara 2.43mg) dan diharapkan dapat dijadikan sebagai alternatif pangan vegetarian pencegah anemia gizi besi.
Keyword: anemia, bioavailabilitas Fe, daging artifisial, tinggi zat besi, tepung ubi

Judul: Fortifikasi Mikroenkapsulasi Besi pada Biskuit Tepung Komposit Pisang, Ubi Jalar, Tempe, dan Wortel sebagai Pencegah Anemia Defisiensi Besi
Abstrak: Penelitian bertujuan untuk manghasilkan biskuit berbahan dasar tepung pisang, ubi jalar, tepung tempe, dan tepung wortel dengan fortifikasi mikroenkapsulasi Fe untuk menanggulangi masalah anemia defisiensi besi. Pembuatan biskuit menggunakan bahanbahan lokal dengan metode dry mixing sebagai upaya diversifikasi pangan. Mikroenkapsulasi Fe dilakukan dengan teknik spray drying yang berbahan dasar ferrous sulphate heptahydrate dengan maltodekstrin dan gum powder sebagai penyalut. Jumlah mikrokapsul besi yang ditambahkan yaitu sebesar 33%, 35%, 37% AKG zat besi usia anakanak 7-9 tahun untuk mencapai klaim tinggi besi. Formula terpilih berdasarkan skor ranking berdasarkan nilai mutu organoleptik. Kandungan gizi formula terpilih yaitu 1.80% air, 2.81% abu, 14.00% lemak, 9.13% protein, 55.84% karbohidrat, dan 8.3 mg/100 gram zat besi (tinggi besi). Nilai bioavailabilitas zat besi dari biskuit sebesar 20.00% (tinggi biavailabilitas). Biskuit dengan fortifikasi mikrokapsul besi diharapkan dapat dijadikan sebagai pangan alternatif pencegah anemia defisiensi besi. Kata kunci: anemia, biskuit fortifikasi, mikroenkapsulasi besi, pangan lokal, tinggi zat besi. I PUTU AGUS MAHENDRA YASA. Fortification of Iron Microencapsulated to composite flour from banana, sweet potato, soybean, and carrot as an alternative food to prevent iron deficiency anemia. Supervised by EVY DAMAYANTHI. The objective of this research was to create a biscuit flour-based from sweet potato, banana flour, soybean flour, and carrot flour with iron microencapsulated fortification to prevent the problem of iron deficiency anemia. The method for this research were making biscuits using local ingredients with dry mixing method, iron was microencapsulated using maltodextrin and gum powder as the coating materials by the spray drying technique, and iron bioavailability of biscuit measured by dialysis bag. The amount of iron microencapsulated was added about 33%, 35%, and 37% from iron RDA of children’s aged 7-9 years old to achieve food with high iron content. The selected formula’s score was 74% of panelist accept the biscuit based on the score ranking of the organoleptik quality. Contributions of biscuits towards energy sufficiency and iron seen from the proximate test. Nutrient content of the best formula were 1.80% of water, 2.81% of ash, 14.00% of fat, 9.13% of protein, 55.84% of carbohydrate, and 8.3 mg/100 g of iron (high iron). The iron bioavailability was 20.00% (high bioavailability). Biscuit with iron microencapsulation can be used as an alternative food to prevent iron deficiency anemia, because every serving size contain 4.15 mg iron which has a claim to food with high in iron.
Keyword: anemia, fortified biscuit, high in iron, local food, microencapsulated iron

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
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