Judul: Pengelolaan Pembibitan Kelapa Sawit ( Elaeis guineensis Jacq) Di Kebun Teluk Bakau, PT Bhumireksa Nusa Sejati, Kabupaten Indragiri Hilir, Provinsi Riau
Abstrak: This internship was aimed to acquire the knowledge, technical skills and management of trainer students to work professionally, increase the soft skill of students to prepare themselves to be professional worker, especially in management aspects of oil palm nursery. This internship has been done in Teluk Bakau Estate, PT Bhumireksa Nusa Sejati, since February to June 2014. The technical aspects that were carried out during the internship consist of following the existing activities in the oil palm nursery in Teluk Bakau Estate, fertilizing the immature plants, weed control on immature plants, and harvesting. Mananejerial aspects were performed as a companion foreman and division assistant. Observation were carried out on germination growing percentage, seedling plant height, and of abnormal seedlings percentage in the pre-nursery. From observation, we found that seedling plan height increase about 2 cm/week, germination growing was 95.9 percent, and abnormal seedlings was 5.9 percents.
Keyword: Bogor Agricultural University (IPB), pre-nursery, germination growing, abnormal seedling

Judul: Pengelolaan Limbah Tanaman Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Manggala-1, PT. Tunggal Mitra Plantation, Minamas Plantation, Provinsi Riau
Abstrak: The internship was conducted at Manggala-1 Estate, Minamas Plantation, Riau Province from February 10th until June 10th 2014. The aim of this internship was to improve technical and managerial skill. It was conducted using direct method (doing all practice in estate, field observation, and discussion with estate employee) and indirect method (collect all information, archives and files from estate) with waste management as a specific topic. The utilization of palm oil waste which produced from mill, such as empty fruit bunch (EFB), wet decanter solid (WDS), and palm oil mill effluent (POME), as an organic fertilizer and mulch could stimulate plant growth. In this internship, writer observed the effectivity of organic waste land application in Manggala Estate especially EFB and POME application. Overall, palm oil waste utilization could prevent environmental damage and also reduce chemical fertilizer used.
Keyword: Bogor Agricultural University (IPB), POME, land application, empty fruit bunch

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.
Keyword: