Judul: Evaluasi Penyelenggaraan Makanan, Kecukupan Zat Gizi, Status Gizi dan Tingkat Kebugaran Santri Pesantren Nurul Huda Al-Manshurin
Abstrak: Penelitian ini bertujuan untuk menganalisis penyelenggaraan makanan, daya terima, tingkat kesukaan terhadap makanan yang disediakan di asrama, kecukupan asupan zat gizi, dan tingkat kebugaran santri di Pesantren Nurul Huda Al-Manshurin. Data yang digunakan dalam penelitian adalah santri berusia dewasa (≥19 tahun) sebanyak 81 orang. Hasil penelitian menunjukkan sistem penyelenggaraan makanan di Pondok Pesantren belum dilaksanakan sesuai dengan standar yang sudah ditentukan baik input, proses, dan output. Makanan yang disediakan belum memenuhi kebutuhan energi dan gizi santri. Rata-rata tingkat kesukaan santri terhadap karakteristik makanan yang disediakan tergolong biasa. Tingkat kecukupan energi dan protein masih kurang tingkat sedang hingga berat, sedangkan kecukupan lemak dan karbohidrat masih tergolong kurang. Tingkat kebugaran santri baik laki-laki maupun perempuan tergolong tidak bugar. Uji korelasi menunjukkan terdapat hubungan yang signifikan (p<0,05) antara kecukupan zat gizi dengan status gizi santri dengan nilai p dan r masing-masing zat gizi yaitu energi (p = 0 dan r = 0,588 ), protein (p = 0 dan r = 0,786), lemak (p = 0 dan r =0,583) dan karbohidrat (p = 0 dan r = 0,583). Hampir tidak ada hubungan di antara status gizi dan tingkat kebugaran., The objective of this study is to analyze the food service, acceptability, level of preference for food provided at the school, adequacy of nutrient intake, and the fitness level of the students at Pondok Pesantren Nurul Huda Al-Manshurin. Subject of this study is the adult age students (≥19 years) as many as 81 students. Pondok Pesantren Nurul Huda Al-Manshurin applies a conventional food service system. The food service system has not been implemented according to the predetermined standard in term of input, process, and output. The provided food does not meet the energi and nutritional needs of the students. The average level of student’s preference for the characteristics of the provided food is moderate. The level of adequacy of energi and protein remains deficit, moderate to high, while the adequacy of fat and carbohydrates is relatively poor. The result of fitness level for male and female students is classified as unfit. . The correlation test showed that there was a significant correlation between nutritional adequacy and the nutritional status of students with p and r values for energi (p = 0 and r = 0,588 ), protein (p = 0 and r = 0,786), fat (p = 0 and r = 0,583) and carbohydrates (p = 0 and r = 0,583). There is almost no correlation between nutritional status and fitness level.
Keyword: need level, nutrients sufficiency, nutritional status, provision of food

Judul: Analysis of Food Service Management, Nutritional Adequacy Levels, and Nutritional Status at the Darul Fallah Agricultural Islamic Boarding School
Abstrak: Upaya pemenuhan kebutuhan gizi santri di pondok pesantren berkaitan dengan penyelenggaraan makanan yang ada di dalamnya. Penelitian ini bertujuan untuk menganalisis penyelenggaraan makanan, tingkat kecukupan gizi, dan status gizi santri di Pondok Pesantren Pertanian Darul Fallah Bogor. Desain penelitian ini adalah cross sectional. Subjek merupakan santri di Pondok Pesantren Pertanian Darul Fallah sebanyak 71 orang. Sebagian besar subjek memiliki status gizi baik (69,0%). Penyelenggaraan makanan menyediakan tiga kali waktu makan. Tidak terdapat siklus menu pada rentang waktu tertentu. Hasil penelitian menunjukkan bahwa masih terdapat hal yang memerlukan perbaikan di dalam pelaksanaan penyelenggaraan makanan, khususnya terkait fasilitas yang digunakan. Hasil penelitian menunjukkan bahwa, menu yang disediakan mampu memenuhi rata-rata kebutuhan zat gizi santri berupa energi (82,1%), lemak (80,4%), karbohidrat (92,2%), serta zat besi (103,2%), tetapi belum dapat memenuhi kebutuhan harian protein (57,4%) dan vitamin C (40,8%). Sebagian besar subjek mengalami defisit berat pada energi (53,5%), protein (93,0%), dan karbohidrat (77,5%), defisit pada vitamin C (88,7%) dan zat besi (67,6%), serta berlebih pada asupan lemak (50,7%). Hasil uji korelasi menunjukkan bahwa tidak terdapat hubungan yang signifikan antara tingkat kecukupan gizi dan status gizi subjek (p>0,05)., Efforts to meet the nutritional needs of the Islamic boarding school are related to the food service management contained in it. The study aims to analyze food service management, levels of nutritional adequacy, and nutritional status at the Darul Fallah Islamic Boarding School. The design of this study is cross-sectional. The subjects were 71 students at the Darul Fallah Agricultural Islamic Boarding School. Most subjects had good nutritional status (69.0%). Food service is provided three meal time/day. There is no menu cycle at a specific timeframe. The results show that there are still things that need to be improved in the implementation of food service, especially the facilities used. The results showed that the menu provided was able to meet the average nutrient needs of the subjects such as energy (82.1%), fat (80.4%), carbohydrates (92.2%), iron (103.2%), but has not able to meet the daily needs of protein (57.4%) and vitamin C (40.8%). Most of the subjects had severe energy deficits (53.5%), protein (93.0%), carbohydrates (77.5%), vitamin C (88.7%) and iron (67.6%), and excessive fat intake (50.7%). The correlation test results showed that there was no significant relationship between nutritional adequacy level and status of the subjects (p>0.05).
Keyword: availability of energy and nutrients, food preparation, level of nutritional adequacy, nutritional status

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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