Judul: Manajemen Pemanenan Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Sei Air Hitam, PT Perdana Intisawit Perkasa, Rokan Hulu, Riau
Abstrak: The internship program has been conducted at Sei Air Hitam Estate, PT Perdana Intisawit Peerkasa, Rokan Hulu, Riau from February to May 2012. The purpose of this internship program is to study the technical and management of oil palm cultivation, especially for oil palm harvesting aspects. The data consisted of primary and secondary data. Generally, farm quality and fruit grade in Sei Air Hitam Estate are good with ratio of loses fruit below the standard that has been stated by the company about 3% and fruit ripenes average reaching more than 95%. Management of Sei Air Hitam estate is good with harvest efficiency percentage rate of 94.4% and 5.6% losses. The main problem in the harvesting is a crop rotation due to the national holiday and many rainfall intensity that crop rotation should be improved so that the oil obtained in accordance with market demand.
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Judul: Pengelolaan Panen Kelapa Sawit (Elaeis guineensis Jacq.) di Kebun Sei Air Hitam, PT Perdana Inti Sawit Perkasa I, First Resources Ltd., Riau
Abstrak: The internship program was conducted in Sei Air Hitam Plantation, PT Perdana Inti Sawit Perkasa I, Rokan Hulu, Riau from February-June 2013. This program aims was to increase knowledge about the cultivation of oil palm, to gain work experience and skills in the management of oil palm harvesting. Harvest planning is done prior to harvest in order to run with harvesting activities optimally. Harvest planning is performed are the calculation of crop density numbers (AKP), assessed the harvest, labor, transportation, harvesting, crop rotation, harvesting facilities and infrastructures. There are some problems in harvesting procces, such as percentage of harvest that was bellow <15%, the use of personal protective equipment that were low, crop rotation that were accelerated and harvest quality is not compatible with company standard. Supervision to the harvesting activity should be improved so the quality of harvest compatible with company standard.
Keyword: Sei Air Hitam Plantation, labor, harvesting oil palm, crop density numbers

Judul: Grup Abelian Berhingga dari Barisan Genomik DNA  (Deoxyribonucleic Acid)
Abstrak: Informasi genetik yang memprogram semua aktivitas sel terdapat dalam bentuk kode di dalam molekul DNA. Grup kodon dari basa nukleotida DNA {A, C, G, U} tidak dapat merepresentasikan daerah non kode dalam genom yang disebabkan oleh mutasi penghapusan serta penyisipan pada barisan genomik DNA. Dalam karya ilmiah ini grup kodon diperluas dengan menambahkan huruf O untuk menandakan mutasi penghapusan atau penyisipan pada kodon untuk semua triplet diperluas 1 2 3 X X X dengan i X Î{O, A, C, G, U} dari barisan genomik DNA. Grup kodon yang diperluas isomorfik dengan grup bilangan bulat modulo 125. Grup abelian berhingga dari barisan genomik DNA yang dibentuk dari himpunan seluruh pasangan terurut triplet ekson dan intron pada untai DNA isomorfik dengan grup jumlah langsung bilangan bulat modulo 64 dan 125. Kemudian grup abelian berhingga tersebut direpresentasikan sebagai grup jumlah langsung 2-grup dan 5-grup homosiklik. Bagian barisan genomik DNA tanpa penyisipan membangun blok gen yang direpresentasikan oleh 2-grup homosiklik, sedangkan bagian barisan genomik DNA yang dipengaruhi oleh penyisipan direpresentasikan oleh 5-grup homosiklik.
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