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Jurnal Teknologi Pertanian
Published by Universitas Brawijaya
ISSN : 14115131     EISSN : 25282794     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Computer Science & IT
Jurnal Teknologi Pertanian diterbitkan oleh Fakultas Teknologi Pertanian Universitas Brawijaya untuk penyebarluasan hasil penelitian yang dilakukan oleh para peneliti dari dalam dan luar Fakultas Teknologi Pertanian Universitas Brawijaya. Jurnal Teknologi Pertanian terbit tiga kali dalam setahun, memuat tulisan hasil penelitian yang termasuk dalam lingkup disiplin ilmu pengetahuan yang terkait dengan Ilmu-ilmu Teknologi Pertanian guna menunjang pengembangan ilmu pengetahuan dan teknologi serta pembangunan nasional.
Arjuna Subject : -
Articles 3 Documents
 1 
Search results for , issue " Vol 12, No 1 (2011)" : 3 Documents clear
Comparison Study on E. coli Inactivation and Physical Changes of Thermal and Non Thermal Processing using PEF (Pulsed Electric Field) in Fresh Milk Pasteurization Hawa, La Choviya; Susilo, Bambang; Susilo, Bambang; Jayasari, Natalia Eka; Jayasari, Natalia Eka
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objectives of this research were to determine the lethal rate of E. coli and to analyze the density, moisture content, viscosity, boiling point, freezing point, and color changes in non thermal pasteurization (pulsed electric field), thermal pasteurization (heat treatment), and combination of both in fresh milk.  Experimental-descriptive method with 2 factors was used in this research. First factor was voltage (20, 40, 60, 80 and 100 kV) and second factor was type of pasteurization (non thermal, thermal, and combination thermal-non thermal). Pasteurization time was 60 second and each treatment was replicated three times. The results showed that the highest E. coli inactivation was combination of thermal and non thermal pasteurization i.e 2.5 log cycles. Physical attributtes (density, moisture content, viscosity, boiling point, freezing point, and color) of milk that treated by non thermal pasteurization and combination did not change significantly after pasteurization compared to fresh milk.Keywords: thermal and non thermal pasteurization, lethal rate, physical attributtes
Application of Optimal Preventive Replacement Age Model to Determine Replacement Schedule For Dumping Grate Component on Boiler Machine (Case Study at Rejo Agung Baru Sugar Factory Madiun) Dania, Wike Agustin Prima; Purwaningsih, Isti; Purwaningsih, Isti; Purwaningsih, Isti; Aristiono, Fajar Andy; Aristiono, Fajar Andy; Aristiono, Fajar Andy
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

Rejo Agung Baru Madiun is one of big sugar companies in East Java. One of the problems in this factory is delayed of production process caused by machine damaged. Based on preliminary survey, it showed that boiler machine is regularly damage and has the highest downtime. Moreover, component that influences the damage of boiler machine is dumping grate component. The main purpose of this research is to determine optimal replacement schedule that has minimum downtime and maximum availability of dumping grate component. Method that is used to solve the problem is optimal preventive replacement age model. Furthermore, it also determines and compares replacement cost before and after scheduling. From the result, it shows that the replacement interval for dumping grate is 555 hours or 23.125 days with the minimum downtime value is 0.010018182 and the availability value is 0.989981818. Total cost of optimal replacement scheduling is Rp 3,341,078,529.00. The cost comparison before replacement scheduling and after replacement scheduling is Rp 3,517,399,429.00 and Rp 3,341,078,529.00 respectively or saving about 5.013%. Keywords: dumping grate, minimum downtime, maximum availability, optimal preventive replacement age model
Effect on Sedimentation Behavior and Performance of Irrigation Channel at Waru-Turi Kanan Kediri Wirosoedarmo, Ruslan; Haji, Alexander Tunggul Sutan; Kristanti, Estin D.
Jurnal Teknologi Pertanian Vol 12, No 1 (2011)
Publisher : Fakultas Teknologi Pertanian Universitas Brawijaya

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Abstract

The objectives of this research were to determine the rate of sedimentation in the primary, secondary, and tertiary channel; to determine channel dimension changes caused by sediment, and the effect of sedimentation to determine the cross section channel’s specific energy. This research consisted of two stages. First stage was data collection i.e. sediment sampling, measurement of flow velocity, and measurement of channel dimensions. Second stage was laboratory analysis. Each stage was replicated three times in 2-week intervals. Sediment sampling was done directly on the primary, secondary, and tertiary irrigation channel networks. Sedimentation rate in primary irrigation channel at dry season was 54.99x10-6 tons/day, while at the secondary was 0.88x10-6 tons/day, and at the tertiary was 0.65x10-6 tons/day. Primary channel with channel cross sectional area of 56.734 m2 reduced into 46.541 m2 due to 10.913 m2 area sedimentation. Secondary channel with channel cross sectional area of 3.086 m2 reduced into 2.732 m2 due to 0.354 m2 area of sedimentation. At tertiary channels with channel cross-sectional area of 1.398 m2 reduced into 1.341 m2 due to 0.057 m2 area sedimentation. The rate of sedimentation in the irrigation channel caused changes in the performance of the channel, namely the primary channel; the channel only worked for 76.93%, the secondary channel was 94.2%, and 91.47% in tertiary canals. Keywords: sedimentation, irrigation channel, subsection

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