Judul: Aplikasi Limbah Pengolahan Kelapa Sawit sebagai Pupuk Organik di Kebun Sei Batang Ulak Kabupaten Kampar Provinsi Riau
Abstrak: Waste of palm oil processing such as empty bunch and palm oil mill effluent in Sei Batang Ulak Plantation, PT Ciliandra Perkasa, First Resources Ltd. Riau used as organic fertilizer. The purpose of an internship in general was to increase knowledge about the cultivation of oil palm and to learned about oil palm waste management industry process to be more beneficial and give a good impact on the environment in specifically. Internship was conducted for 4 months. The retrieved data were the primary and secondary data. Waste application could provide the nutrient required palm oil so reducing inorganic fertilizer and increase productivity. Productivity increase with increasing of application empty bunch area. Application of waste affects the quality of ground water and surface water around the application so that the water is not suitable for consumption. Sludge liquid waste can be used as growing media of kangkong. Growing media with 100% sludge liquid waste gives the best effect on plant height, number of leaves and biomass weight of plant kangkong.
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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: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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