Judul: Manajemen Pemupukan Kelapa Sawit (Elaeis guineensis Jacq.) di Pinang Sebatang Estate, PT. Aneka Intipersada, PT. Minamas Plantation, Siak, Riau.
Abstrak: The internships was conducted in Pinang Estate, PT. Aneka Intipersada, PT. Minamas Plantation within 3 months commencing on February 13, 2012 until May 13, 2012. Internship activities include all activities undertaken in the field consisted of technical aspects and managerial aspects, both in the field and in the office. Technical aspects were follow and implement the prosess of fertilization from the start of repackage fertilizer stage in storage until sowing fertilizer, the process of harvesting fresh fruit bunches (FFB) in the field until the sorting process at the mill, field maintenance processes like weeds control with herbicide applications and planting host plants for predator (beneficial plant). The author had the opportunity to follow the seeding process starts from the preparation area nurseries, sorting seeds to planting seeds into the baby bag. The author also perform managerial aspects such as helping krani division to entry the data all the work in Division IV PSE with applications on line using the System, Application and Products (SAP), assist staff in the preparation of auditor training Indonesia Sustainable Palm Oil (ISPO), follow and assist the organization of supervision before leaving for work in the morning meeting. Based on the observation, generally, implementation of fertilization has been going according to Standard Operational Procedure (SOP) and has fulfilled the accuracy of fertilization.
Keyword: 

Judul: Studi Pengelolaan Pemupukan Tanaman Menghasilkan Kelapa Sawit  (Elaeis guineensis Jacq.) Di Bukit Pinang Estate, Pt Bina Sains Cemerlang,  Musi Rawas, Sumatera Selatan
Abstrak: The objective of this internship is to increase technical and managerial skill. The internship has done from January12th until June 12th in Bukit Pinang Estate (BPE) Palm Oil Plantation, PT Bina Sains Cemerlang, Musi Rawas, South Sumatera.The methods of this internship are direct and indirect methods. Direct method was conducted by work practice as a field worker and foreman assistant, while the indirect methods was conducted by collecting information from estate archives and literature review. Fertilization applied to keep the amount of soil nutrient in order to ensure plant nutrient fufillment. On yielding crops, fertilization becomes a vital importance because it counts up to 60% of maintenance cost. Therefore it is urgently a correct management of fertilization to optimum efficiency and effectiveness. Condition of rainfall and oblique land topography results fertilization in Bukit Pinang Estate hardly influenced by run off. Fertilization in Bukit Pinang Estate is done by applying concept (4T) that is type precise, dose precise, time precise, and way precise of fertilization. Monitoring done to control quality of fertilizer application in the field . Based on result of observation of quality of fertilization seen 5.2% oil palm which is not fertilized by dredger and 94.8% is fertilized, 41.8% fertilizer is sowed with number of propers while 29.1% too a few, and 29.5% too excessive, 80.2% fertilizer have been disperse in frond, 0.8% in saucer, 5.1% in gate, 3.8% in frond and gate, and 10.1% in frond and saucer. Result of observation of condition of saucer and gate seen 64.4% saucer in condition of dirty, 35.6% clean saucer and 40.4% gate in condition of dirty and 59.6% in condition of clean. Improvement of fertilizer efficiency in BPE is done with making of siel pits, road siel pits, compiles frond " U" Shape, and the application of organic material (JKS).
Keyword: 

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.
Keyword: