Judul: Potensi Sorgum Sebagai Pengganti Jagung Dengan Penambahan Tepung Duckweed (Lemna Minor) Terhadap Kualitas Dan Nilai
Abstrak: Penggunaan sorgum dalam pakan puyuh petelur harus diimbangi dengan pemberian sumber pakan yang mengandung karoten salah satu tanaman yang berpotensi sebagai sumber karotenoid adalah Lemna minor (duckweed). Penelitian ini menggunakan 5 taraf perlakuan, P0 = ransum control jagung, P1 = ransum control sorgum, P2 = ransum sorgum + 1.5% tepung duckweed, P3 = ransum sorgum + 3% tepung duckweed, dan P4 = ransum sorgum + 4.5% tepung duckweed. Penelitian ini menggunakan uji deskriptif dengan objek observasi 32 ekor puyuh berumur 44 hari. Peubah yang diamati adalah skor warna kuning telur, kualitas telur seperti bobot telur, bobot kuning, bobot putih, tebal kerabang, serta pengukuran nilai MDA. Hasil penelitian menunjukkan bahwa sorgum dapat dijadikan sebagai sumber energi untuk pakan puyuh petelur dan dapat meningkatkan kualitas kuning telur puyuh jika diimbangi dengan pemberian tepung duckweed. Penggunaan tepung duckweed dengan taraf 1.5% belum mampu menandingi skor kuning telur jika dibandingkan dengan ransum jagung, sedangkan taraf 3% dan 4.5% mampu menandingi dan melebihi. Penyerapan vitamin A yang berasal dari beta karoten tepung duckweed juga dapat terlihat dari nilai MDA, perlakuan dengan penambahan tepung duckweed dapat menekan nilai MDA jika dibandingkan dengan P0 dan P1.
Keyword: beta karoten, duckweed, kualitas telur, MDA, sorgum

Judul: Substitusi Jagung dengan Sorgum yang Ditambahkan Tepung Daun Singkong terhadap Kualitas Telur Puyuh
Abstrak: Sorgum is an energy sources which is highly potential to develop. It has low carotene level, so it has to be balanced by adding carotene in the feed meal. Cassava leaf meal is a kind of forages which has high carotene level 154mg kg-1. This research aimed to study the effect of White Sorgum as corn subtitution with cassava leaves meal combination on the quality and vitamin A of Japanese Quail Egg. This observations used completely randomized design with five treatment and three repetition (10 eggs/repetition). The treatments are control (P1), 50% sorgum + cassava leaves meal 0% (P2), 50% sorgum + cassava leaves meal 1.5% (P3), 50% sorgum + cassava leaves meal 3% (P4), 50% sorgum + cassava leaves meal 4.5% (P5). It is concluded that sorgum and cassava leafs meal were able to increase egg weight, yolk color, albumin weight, haugh unit, and vitamin A level.
Keyword: vitamin A, quail egg, sorgum, egg quality, cassava leaves meal

Judul: Kekonsistenan Hamiltonian pada Gerak Gelombang Interfacial
Abstrak: The interfacial wave is an internal wave that occurs at boundary of two layers fluid. It appears because there is difference of mass density between the two layers. The objective of this thesis is to formulate the motion of internal wave with flat base and flat as well as free upper bound surface. The motion equation obtained is a Hamiltonian system. The Hamiltonian in this system is expressed by variable of wave deviation and horizontal component of potential velocity. Under assumption that interfacial wave moves only in one direction, it can be shown that the Hamiltonian depends on the solution of the wave motion equation. The coefficients of the equation depend on the physical characteristics of the two layers of fluid, i.e. thickness and mass density. The numerical results show that Hamiltonian in the system is constant. It is consistent with Hamiltonian characteristic, which does not depend on time.
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