Judul: Komposisi Asam Lemak, Kolesterol, dan Deskripsi Jaringan Fillet Ikan Kakap Merah (Lutjanus argentimaculatus) Segar dan Goreng
Abstrak: Red Snapper (Lutjanus argentimaculatus) is a type of fish that usually consumed by people. The aim of this research was to determine the composition of fatty acid, cholesterol and tissues description on fresh and fried of red snapper fillet. Fresh red snapper had mosture content 79.31%, 1.92% ashes, 16.30% protein, 0.05% fat and carbohydrates 0.23%. Then after frying, the mosture changed into 62.49%, ashes 1.98%, protein 28.40%, fat 2.17%, and carbohydrates 5.62%. The highest compound of saturated fatty acid on red snapper were myristic acid (C14:0), palmitic acid (C18:0), and stearic acid (C18:0). The highest compound of monounsaturated fatty acid were palmitoleat acid (C16:1) and oleic acid (C18:1). The highest compound of polyunsaturated fatty acid were linoleic acid (C18:2), linolenat acid (C18: 3), arakidonat acid (C20:4), EPA (C20:5) and DHA (C22:6). Cholesterol content has changed of 20 mg/ 100 g to 60 mg/ 100 g after frying. Tissues structure of fresh red snapper seemed not compact because of decline quality meat, but fried flesh of red snapper seemed more compact.
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Judul: Profil Asam Lemak, Kolesterol, dan Jaringan Skin On Fillet Ikan Kakap Putih (Lates calcarifer) Segar dan Panggang.
Abstrak: Ikan kakap putih (Lates calcarifer) merupakan salah satu ikan yang memiliki nilai ekonomis tinggi dan mengandung asam lemak tidak jenuh yang baik untuk tubuh. Penelitian ini bertujuan untuk menentukan kadar proksimat (air, protein, lemak, abu, karbohidrat), asam lemak, kolesterol, dan struktur jaringan skin on fillet ikan kakap putih segar dan panggang. Proses pemanggangan dilakukan pada suhu 180 ºC selama 20 dan 30 menit. Skin on fillet kakap putih mengandung 18 jenis asam lemak yang terdiri atas 9 jenis SFA, 4 jenis MUFA, dan 5 jenis PUFA. Jenis SFA tertinggi adalah asam palmitat dengan kadar sebesar 19,81% pada fillet kakap segar dan 16,78% pada fillet kakap panggang. Jenis MUFA tertinggi adalah asam oleat dengan kadar sebesar 12,40% pada fillet kakap segar dan 10,43 % pada fillet kakap panggang. Jenis PUFA tertinggi adalah DHA dengan kadar sebesar 4,65% pada fillet kakap putih segar dan 4,30% pada fillet kakap putih panggang. Kadar kolesterol fillet kakap putih segar sebesar 363 mg/100g menjadi 245,11 mg/100g setelah dipanggang.
Keyword: asam lemak, Lates calcarifer, pemanggangan, jaringan

Judul: Penyelesaian Model Epidemi SEIV dengan Menggunakan Metode Perturbasi Homotopi
Abstrak: SEIV epidemic model is one of mathematical models for the spread of infectious diseases. Examples of infectious diseases that correspond to this model are polio and rabies. One way to handle the spread of infectious diseases is by vaccination. SEIV epidemic model has involved factor of vaccination, and it has nonlinear form. Solution of SEIV epidemic model is constructed by using the perturbation homotopy method. In homotopy perturbation method, linear operator and nonlinear operator are defined by differential equations those arise in SEIV epidemic model. The graph of solutions obtained by the homotopy perturbation method and that by the numerical method are coincide. Simulations which are given by changing the parameter values of the SEIV epidemic model provided small differences.
Keyword: Bogor Agricultural University (IPB), perturbation homotopy method, nonlinear problem, SEIV epidemic model