Judul: Analisis Risiko Pasca Panen Tandan Buah Segar (TBS) kelapa sawit (Kasus : Desa Tanah Datar Kecamatan Kunto Darussalam Kabupaten Rokan Hulu Provinsi RIAU)
Abstrak: Tanah Datar village is one of the centers of oil palm plantations in the Rokan Hulu Regency of Riau Province. Palm oil production generated by farmers is the fresh fruit bunches (FFB). On the post-harvest process oil palm FFB has several stages that must be traversed, from FFB are on land to palm oil factory. Production of FFB produced by farmers less than the maximum, due to loss of production results in every phase of post harvest oil palm. The purpose of this research is to know the result of large production loss and analyze the impacts of lost production at every stage of the FFB post harvest oil. Analysis of the results obtained shows that the loss of production result in the FFB land, on checking process FFB raw, FFB in TPH, and sorting plant. As for the large percentage of total production loss of production of FFB produced amounted to 1.70 percent at the land, 0.51 percent on the process of checking the FFB raw, 0.27 percent when FFB in TPH and 2.70 percent at sorting plant. The impact of the losses arising from the loss of post-harvest TBS in total per two hectares of land is Rp 412 265.14 per month and if combined for one year will reach Rp 4 946 486.88.
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Judul: Manajemen Panen Kelapa Sawit (Elaeis Guineensis Jacq.) di Kebun Tambusai PT. Panca Surya Agrindo, First Resources Ltd., Kec. Tambusai, Kabupaten Rokan Hulu, Riau.
Abstrak: The purpose of this internship program was to improve technical and managerial skills on oil palm plantation. The internship was conducted at Tambusai Estate, PT. Panca Surya Agrindo, First Resources Ltd; Tambusai, Rokan Hulu, Riau on 13 February to 12 May 2012. Primary data from field observations devoted to the preparation of fruit harvesting, and other technical and managerial aspects of harvesting, harvesting system of premiums, and production of fresh fruit bunches. Secondary data were obtained from the archives of the company for 5 years. The data were analized by using deskriptive method, percentage (%) and average value. The data and fild observations indicated that there were harvesting management problem needed to be improved. The problem related with the back number of harvester, caused too high harvest capacity of each harvester, and the less accurate of yield prediction. Asno the consequency of the problem was the late of transportation to the mill and the processing of FFB at the mill
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Judul: Solusi Geometri Schwarzschild untuk Dimensi 4+1 dengan Invarian Rotasi Isotropik.
Abstrak: Metrik Schwarzschild merupakan solusi eksak pertama dari persamaan medan Einstein dengan mangasumsikan metrik statik dan simetris. Metrik Schwarzschild yang ditemukan oleh Karl Schwarzschild masih dalam dimensi 3+1, namun seiring dengan teori-teori terbaru yang menunjukkan bahwa alam semesta tidak hanya di dimensi 3+1. Maka melalui penambahan dimensi, tujuan penelitian ini memperoleh solusi pada geometri Schwarzschild untuk dimensi 4+1 dengan memodifikasi koordinat bola yang invarian rotasi isotropik dan melalui penurunan rumus seperti koordinat bola, simbol Christoffel, dan tensor Ricci. Selain mendapatkan solusi ini, metrik Schwarzschild dimensi 4+1 dapat digunakan sebagai metrik dasar untuk memperoleh solusi blackhole dan wormhole pada dimensi 4+1. Hasil akhirnya, dengan memanfaatkan modifikasi koordinat bola, metrik Schwarzschild dapat dibentuk sehingga diperoleh solusi geometri Schwarzschild untuk dimensi 4+1.
Keyword: metrik Schwarzschild, persamaan medan Einstein, modifikasi koordinat bola, penambahan dimensi, invarian rotasi isotropik