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MEKTEK
Published by Universitas Tadulako
ISSN : -     EISSN : -     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 14, No 1 (2012)" : 5 Documents clear
PENGARUH TEMPERATUR DAN BENTUK TAKIKAN TERHADAP KEKUATAN IMPAK LOGAM Zuchry M, Muhammad
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

The ability of a material in its use can be influenced by various factors including the temperature. The lower the temperature of the material will be more brittle and conversely the higher the temperature the material will be more resilient, and toughness will also be affected by the presence of defects in material such as cracks, corrosion, holes, etc. and. Impact test is one way to analyze and know the mechanical properties of the material, and the impact test will be the extent to which teperatur and can affect the notch toughness and ductility of the material. It is important to be  can know how a material will be feasible or not to be used
SISTEM PROTEKSI GENERATOR TURBIN UAP (Studi Kasus: Pabrik Gula Camming) Amin, Nurhani
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

This study aims to determine the extent of the protection system reliability steam turbine generator at Camming Sugar Factory in Bone regency against short circuit. Generator protection system reliability at Camming Sugar Factory in 1996 to 2003 reliability configuration is 1. In 2004 to 2007, the series reliability configuration is 0.9994, reliability parallel configuration is 1.0 and backup configuration is 0.9995. In 2008 to 2011, the series and parallel configurations reliability is 1, while the backup configuration is 0.9998. In 2012, the series reliability configuration are 0.9998, parallel eliability,configuration is  0.0007 and backup configuration reliability is 1. This shows that the generator protection system reliability at Camming Sugar Factory classified very well.
TINGKAT PEMANFAATAN DAN FAKTOR FAKTOR YANG MEMPENGARUHI PEMAKAIAN JEMBATAN PENYEBERANGAN ORANG DI DEPAN MALL TATURA KOTA PALU Mashuri, Mashuri; Widodo, Sigit
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

One cause of the disruption of traffic on urban road are pedestrian crossing the street. The bridge crossing is one of the transportation infrastructure which aims to minimize traffic discruption by pedestrian crossing. The purpose of this study was to determine the level of utilization and factors that effect the use of the pedestrian bridge in front of Mall Tatura, Palu city. The research data includes the volume of pedestrians using the bridge crossing and pedestrian volume arenot using pedestrians bridge crossing. Data was collected in the peakhours on weekdays and outside the working day. The data analysis using statistical methods includes Cronbach’s Alpha Test, Relative RankIndex Test and Correlation Spearman Rank Testing. The result of this study is to found that the utilization rate of the pedestrian bridge in front of the Mall Tatura, Palu city is not very helpful.  Factors effecting the use of pedestrian bridge in the study area includes geometric/dimensional of bridge crossing, distance to/from the bus stop, the texture of the floor, the travel time to/from the centre of activity, travel time to/from the bus stop infrastructure, and lighting on the bridge crossing.
PENGUJIAN METODE HIDROGRAF SATUAN SINTETIK GAMA I DALAM ANALISIS DEBIT BANJIR RANCANGAN DAS BANGGA Andiese, Vera Wim
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

One of the methods to determine design of flood discharge that had been developed in Java are Gama I Synthetic Unit Hydrograph. This method flood hydrograph at rivers with none or very little flood hydrograph observation by using caracteristic or catchment area parameter. But, the physical caracteristic in Java is different if compared in Central Sulawesi, especially Bangga catchment area.The method in this study is to determine the deviation of flood discharge design by Gama I Synthetic Unit Hydrograph method compare with hydrology distribution method (frequency distribution). The analysis method used by Log Person Type III distribution. The result of deviation of value flood discharge design is 2052,9328 % for 2nd return period, 1633,7338 % for 5th return period, 1578,8311 % for 10th return period,1380,4368 % for 25th return period, 1251,4076 % for 50th return period, and 1136,2231 % for 100th return period.
EFEKTIFITAS KOLEKTOR ENERGI SURYA PADA KONFIGURASI PARALEL SERPENTINE W, Danny Syamsu; Selleng, Kristian; Mustofa, Mustofa
MEKTEK Vol 14, No 1 (2012)
Publisher : MEKTEK

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Abstract

This study aims to demonstrate the effectiveness of the collector on the fluid mass flow rate variations in sunlight collectors on the configuration of the combined 'parallel-serpentine'. Value of the mass flow rate is 0.09, 0.18 and 0.36 ltr/min. Fluid drained from the reservoir of cold water through the collector pipe and into the parallel configuration serpentine configuration and then stored in the hot water tank. The test results showed that the efficiency of a mass flow rate achieved at the optimum 0.36 liter / min. This result is probably leading to suitable for domestic purposes.

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