Judul: Harvest  management  of  palm  oil  (elaeis  guineensis  jacq.)  in  teluk  bakau  estate,  pt  bhumireksa  nusa  sejati  minamas  plantation, riau
Abstrak: Kegiatan magang dilaksanakan di Kebun Teluk Bakau, PT Bhumireksa Nusa Sejati Minamas Plantation, Riau dari 10 Februari hingga 10 Juni 2014. Pelaksanaan kegiatan magang bertujuan untuk memperoleh pengalaman kerja, keterampilan dan pengetahuan khususnya pengetahuan kultur teknis tanaman kelapa sawit. Secara khusus kegiatan magang bertujuan untuk mempelajari pengelolaan panen melalui proses kegiatan panen, menganalisis permasalahan dan memecahkan masalah. Secara keseluruhan proses kegiatan panen untuk menghasilkan produksi TBS (Tandan Buah Segar) di Kebun Teluk Bakau berjalan dengan baik. Pelaksanaan panen yang efisien dipengaruhi oleh taksasi produksi, cuaca pada saat pelaksanaan panen, tingkat kematangan buah, rotasi panen, sistem pengangkutan hasil panen dan karyawan panen. Proses kegiatan angkut tandan buah segar di Kebun Teluk Bakau menggunakan jalur air. Saat proses pengangkutan masih terdapat kehilangan hasil pada buah dan brondolan. Pengawasan intensif terhadap karyawan merupakan salah satu langkah untuk menekan kehilangan hasil panen, The internship was conducted in Teluk Bakau Estate, PT Bhumireksa Nusa Sejati Minamas Plantation, Riau from February 10 th to June 10 th 2014. The purpose of internship is to get experience of work, skill and knowledge especially the technical culture of palm oil. In specifically, the purpose of internship is to learn management of harvesting by processing of harvesting activity, analyze of problem and solve problem. Process of harvesting activity that produced the fresh fruit bunch in the Teluk Bakau Estate had been good. There are some factors which influenced palm oil harvesting, they were prediction of production, weather in harvesting, fruit ripeness, harvested rotation, transportation and the labor. The harvesting activity in Teluk Bakau Estate used water transportation. There was still the losses during process of transportation. The intensive control to the labor was one of the measures to depress the losses
Keyword: panen, kehilangan hasil panen, produksi

Judul: Manajemen panen kelapa sawit (Elaeis guineensis Jacq.) pada lahan gambut di Kebun Mandah, PT. Bhumireksa Nusa Sejati, Minamas Plantation, Kabupaten Indragiri Hilir, Provinsi Riau
Abstrak: The harvest management at peatland oil palm plantation is one of the most important factors to reach high fresh fruit bunch (ffb) production. The purpose of this apprenticeship activity was to improve knowledge, ability and work skill of student in order to comprehend in harvest management at oil palm plantation. This apprenticeship took place in Mandah Estate, PT. Bhumireksa Nusasejati, Minamas Plantation, Indragiri Hilir, Riau, from February 2012 to May 2012. Data and information were collected with direct methode and indirect methode. Direct methode was collected by observation and discussion with harvester, foreman, and field assistant. Indirect methode was collected from company data and company record. The harvest activity in Mandah Estate divition 5, uses Block Harvesting System non-Division Of Labour (BHS non-DOL). This system was implementation programs of harvest activity that focus to finished harvest in one section a day. The result of harvest activity in Mandah Estate divition 5 runs well, a shown by good field quality with 0.2 lost fruit per plant, 95.3 % of ripe fruits and 0% unripe fruit. The most obstacle of harvest aspec in Mandah Estate was the transport unit of ffb very slow and caused the uncarry of ffb.
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Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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