Judul: Analisis faktor penentu produksi  Tandan Buah Segar (TBS) tanaman kelapa sawit  (Elaeis guineensis jacq.) di Sungai Bahaur Estate (SBHE), PT Bumitama Gunajaya Agro (PT BGA), Wilayah VIMetro Cempaga, Kotawaringin Timur,  Kalimantan Tengah
Abstrak: The internship started from February 14th to June 14th 2011. The aim of this internship is to find out and analyze about the effect determinant fresh fruit bunch (FBB production factors) of palm oil (Elaeis Guineensis Jacq.) in SHBE, PT Bunitama Gunajaya Agro, Central Borneo. Data used for this internship is time series data from 2008-2010. Independent variable is FFB production. The data were gained primary data (direct method) and secondary data (indirect method). it used two different method. Cobb-Douglas method with double linear regression analysis equation and t-test method. The double linear regression analysis result shows that the variables of employees has positive and very significant effect, variable of fertilizer has negative and is not significant effect, and variable of rainfall has positive effect is not significant towards the palm production. The t-test results shows that ages of plants, SPH and topography has significant toward the palm production. \the coefficient determining (R2) test result shows that the FFB production as dependent variable can be describe by the independent variables (fertilizer, rainfall and employees) for 98.2 %.
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Judul: Analisis Produksi Kelapa Sawit ( Elaeis guineensis Jacq.) di Kebun Buatan PT Inti Indosawit Subur, Kabupaten Pelalawan, Provinsi Riau
Abstrak: The internship program has been conducted at PT. Inti Indosawit Subur, Buatan Estate, Pelalawan, 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. Buatan estate generally have applied the technique of oil palm cultivation in accordance with standard operating procedures that have been established by the company. Based on double linear regression analysis, FFB (Fresh Fruit Bunch) production is influenced by the number of harvesting working days and the amount of harvester output. The coefficient of determination (R2) generated that variables of FFB production as dependent variable can be describe by the independent variables (harvesting working days, amount of harvester output and rainfall) for 98.3%. The main problem is the decrease in crop productivity for plants older than 22 years as the age of the plant is already above the maximum age of the average productivity of oil palm.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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