Judul: Analisis produksi kelapa sawit (Elaeis guineensis Jacq.) pada Lahan Gambut di Kebun Mandah Estate, PT Bhumireksa NusaSejati, Minamas Plantation, Indragiri Hilir, Riau.
Abstrak: The internship program has been conducted at PT Bhumireksa Nusa Sejati, Minamas Plantation, Indragiri Hilir, Riau from February 13 to May 13 2012. The purpose of this internship program is to learn oil palm cultivation and specifically analyzes the factors that influence the production of palm oil. The data to be collected consist of primary and secondary data. Mandah Estate has reached a high production and has exceeded its specified company targets and successively increased production from year to year. From five estates in PT Bhumireksa Nusa Sejati, Mandah Estate which has an average peak production of 57.54 tonnes/ha/year. Management of oil palm plantations on peatlands has a different management technique on soil minerals. There a several major factors that can effects a crop production is age of plant, disease, rainfall, soil/land, harvesting, and water management.
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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: Desain Sistem Transfer Energi Nirkabel Berbasiskan Tesla Coil
Abstrak: Tesla coil merupakan alat yang ditemukan oleh Nikola Tesla yang dapat mentransmisikan daya tanpa kabel dengan memanfaatkan prinsip induksi elektromagnetik. Pada penelitian ini dibuat sebuah prototype Tesla Coil dengan menggunakan transistor C1970 dan receiver menggunakan rangkaian LC. Identifikasi alat meliputi pengaruh daya input transmitter terhadap receiver, bentuk signal yang dipancarkan transmitter, pengaruh jarak transmitter dan receiver, nilai efisiensi serta efek alat terhadap perangkat lain. Hasil pengamatan menunjukkan bahwa semakin besar daya input maka semakin besar daya yang dipancarkan oleh transmitter. Bentuk sinyal yang dipancarkan oleh transmitter berupa gelombang listrik AC sinusoidal dengan frekuensi ~2.9 MHz. Semakin jauh jarak receiver terhadap transmitter maka semakin kecil amplitudo gelombang AC yang diterima oleh receiver, menyebabkan semakin kecil daya yang diterima oleh receiver. Adapun nilai efisiensi terbesar penangkapan daya oleh receiver yaitu sebesar 0.00516 % serta terdapat gangguan pada alat-alat tertentu seperti monitor komputer dan radio.
Keyword: rangkaian LC, receiver, tesla coil, transistor C1970, transmitter