Judul: Manajemen pemetikan tanaman teh (Camellia sinensis (L.) O. Kuntze) di PT Rumpun Sari Kemuning, Karanganyar, Jawa Tengah
Abstrak: This program was apprentice activity have intent to increase the knowledge and experience about pick aspect management and directly involve in the field and can solve the problem happens in the field. The internship program was conducted in PT Rumpun Sari Kemuning Karanganyar, Solo, Central Java almost for four months since February until July 2014. The implementation of apprentice is direct work activity and attend technical activities in the field. Observation is covering the that pluck section surface, diameter pluck section surface, the capacity of plucker thicknes of leaf, conservancy of tip leaf, productivity by age after cutting, pick analysis, bud analysis, services of picker. The result of observations were obtained there are some aspects in picking PT Rumpun Sari Kemuning during internship activities indicate that the execution time and shift plucking stringed jendangan not meet the standards set, still need improvement to meet the standards company, but the production can meet the needs of the target because at the top of the analysis result of the passage remains in compliance with the passage of medium quality standard.
Keyword: Bogor Agricultural University (IPB), tea., analysis tip, plucking pick

Judul: Pengelolaan pemangkasan tanaman teh (Camellia sinensis (l.) O. Kuntze) di perkebunan medini, PT Rumpun sari medini, Kendal, Jawa Tengah
Abstrak: Internship activities carried out in Medini plantation PT Rumpun Sari. Medini Kendal, Central Java for four months from February until June 2011. Internship method is conducting garden has been established by both techical and managerial aspects. Level of work place as field worker for one month. Data collection activities are used direct and indirect methods, Indrirect method used to obtain secondary data. Medini plantation is located at an altitude of 90-1 775 m as with an area 309.28 ha. Pruning is an essential maintenance activities carried out in tea palntations. Clean prunninh is being done on plantation medini with rotation 4 years. Mowed area that is 25% of tea total crop yield by 55-65 cm. clipping height.
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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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