Judul: Analisis Pengendalian Mutu Minyak Kelapa Sawit pada PTPN VI Jambi
Abstrak: Development of national palm oil industry is very prospective. One of the palm oil companies that have a high contribution for Indonesia is PTPN VI. The purpose of this study to know the production process, the factors that influence the quality and implementation of quality control analyzes conducted by PTPN VI on the production process of palm kernel oil. This study uses primary data collected from interviews and secondary data from company data and analysis tools with a causal diagram and control charts. Based on the analysis, production quality control (QC) is done by the company is QC of raw materials, QC of production processes and QC of proceeds production. Production of palm kernel oil and palm oil are produced in the factory, with a series of processes, the receipt of raw materials, boiling, thresing, compression, separation of oil from sludge and citations core. This process will affect the quality factors, namely palm oil free fatty acids (FFA), moisture content (MC) and levels of impurities (LOI), while palm kernel is the moisture content (MC) and levels of impurities (LOI). In the cause effect diagram, the high and low value of FFA, MC and LOI is determined by several factors, namely fresh fruit bunches (FFB), labor, machinery and equipment, methods and environment. In control charts, process oil and palm kernel production still uncontrolled variation caused by many causes.
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Judul: Analisis pengendalian mutu minyak kelapa sawit pada PTPN VI Jambi
Abstrak: Pengembangan industri kelapa sawit nasional sangat prospektif. Salah satu perusahaan kelapa sawit yang memiliki kontribusi tinggi bagi Indonesia adalah PTPN VI. Tujuan penelitian ini mengetahui proses produksi, faktor-faktor yang memengaruhi mutu dan menganalisis penerapan pengendalian mutu yang dilakukan oleh PTPN VI pada proses produksi minyak dan inti sawit. Penelitian ini mengunakan data primer yang dikumpulkan dari hasil wawancara dan data sekunder serta alat analisis dengan diagram sebab akibat dan grafik kendali. Berdasarkan hasil analisis, pengendalian mutu produksi yang dilakukan oleh perusahaan adalah pengendalian mutu bahan baku, pengendalian mutu proses produksi dan pengendalian mutu hasil produksi. Produksi minyak dan inti sawit diproduksi di pabrik kelapa sawit dengan serangkaian proses, yaitu penerimaan bahan baku, perebusan, pemipilan, pengempaan, pemisahan minyak dari endapan dan pengutipan inti. Proses ini akan berpengaruh terhadap faktor-faktor mutu minyak sawit yaitu asam lemak bebas (ALB), kadar air (KA) dan kadar kotoran (KK), sedangkan inti sawit adalah kadar air (KA) dan kadar kotoran (KK). Pada diagram sebab akibat, tinggi rendahnya nilai ALB, KA dan KK ditentukan oleh beberapa faktor, yaitu tandan buah segar (TBS), tenaga kerja, mesin dan peralatan, metode dan lingkungan. Dari grafik kendali, proses produksi minyak dan inti sawit masih tidak terkendali yang disebabkan oleh banyak variasi penyebab.
Keyword: Bogor Agricultural University, Institut Pertanian Bogor, IPB, Oil and palm kernel, Quality control, Cause effect diagram, Control charts

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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