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IPTEK The Journal for Technology and Science

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Published by Institut Teknologi Sepuluh Nopember Surabaya

ISSN : 08534098 EISSN : 20882033 DOI : -

Core Subject : Science,

Computer Science & IT

IPTEK The Journal for Technology and Science (eISSN: 2088-2033; Print ISSN:0853-4098), is an academic journal on the issued related to natural science and technology. The journal initially published four issues every year, i.e. February, May, August, and November. From 2014, IPTEK the Journal for Technology and Science publish three times a year, they are in April, August and December in online version.

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Articles 5 Documents

Search results for , issue "Vol 28, No 2 (2017)" : 5 Documents clear

Calculation Method of Green Open Space Based on Carbon Emission from Transportation Sector in Surabaya Ikhlas, Nurani; Abdullah, Taufik; Boedisantoso, Rachmat
IPTEK The Journal for Technology and Science Vol 28, No 2 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Surabaya is one of the metropolitan cities with dense transportation activities. Transportation is an activity contributes in increasing excessive release of carbon emmisions into the air. The increasing of carbon emmision can causes inventory green open space should be adjusted to reduce air pollution. The purpose of this study is to determine the green open space necessary based on the carbon emissions that is produced in the city of Surabaya. This study was conducted by the method of approach in Surabaya in each area of the transportation sector. The results show that the total green open space is needed in Surabaya is 66.526 km2 with total emission is produced 329,443.66 CO2/month or about 3,953,323.92 CO2/year.

Adaptive Data Aggregation for Shortest Geopath Routing Protocol in Wireless Sensor Network Ady Kusuma, I Gusti Ngurah; Wibisono, Waskitho
IPTEK The Journal for Technology and Science Vol 28, No 2 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Wireless sensor network is a network that contains many nodes in each nodes with limited power source and ability to send a sensing data to a cordinator node that called sink node. Every data that sent through network, will cost amount of energy for transmitting and draw energy each time a data transmitted from power soucve. To extend the network lifetime, we should optimize the data that transmitted. In this research author propose an adaptive method that using in network data aggregation with cluster and tested in SIDnet-SWANS. This method collecting the data at Cluster Head node before it forward to sink node rather than forwarding every data that arrive at cluster head to next hop. This method has better performance than other method, average energy left after 48 hours sensing is 17.23% and 78818.67 second to first node dead. This method giving more efficiency of energy use better than non-aggregation method

Bio-corrosion on Aluminium 6063 by Escherichia coli in Marine Environment Herman Pratikno; Harmin Sulistiyaning Titah
IPTEK The Journal for Technology and Science Vol 28, No 2 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Biological corrosion is caused by presence of microbes in environment. Escherichia coli causes serious biofouling in various environments and its pronounced influence on marine biofouling that causing serious problems such as accelerated corrosion. E. coli shares similar properties with most marine bacteria and it was extensively studied for marine environment. The aims of this research was to determine the corrosion rate on Aluminium 6063 by E. coli in deep seawater (salinity of 33‰), medium seawater (salinity of 35‰), shallow seawater (salinity of 37‰). Based on results, bio-corrosion rate on Al 6063 were higher than control. The bio-corrosion rate Al 6063 at day 28 in salinity of 37‰ was 1.1233 mm/year, meanwhile the corrosion rate for control was 0.7225 mm/year. Visual observation showed that corrosion occured on surface on specimen. Macrostructure observation showed that white spots occured on surface of specimen with E. coli was higher than specimen in control (without E. coli, only saline water) It was indicating that presence of E. coli caused increasing of corrosion rate on Al 6063.

The Impact of Coastal Tourism Activities on Water Quality at Baluran National Park Nike Ika Nuzula; Haryo D. Armono; Daniel M. Rosyid
IPTEK The Journal for Technology and Science Vol 28, No 2 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

Baluran is a national park identified as biologically and nun-biologically rich area in East Java. It has physical landscapes with high tourism potential. In the past five years, tourists visit has significantly increased, where leds to water quality degradation around the coast. The aim of this research is to determine the relationship between tourists visit and water degradation phenomena in the area of study. The PCA (Principal Component Analysis) and IPL (Environmental Pollution Index) is used for analysis. Research was performed in the rainy and dry seasons. The correlation of water quality parameters in dry season is higher than in the rainy season. Water environment pollution index is 0.027 (category not polluted) in dry season and 0.48 (category not polluted) in rainy seasons.

Vibration Monitoring and Analysis of Conveyor Driving Unit of a Coal Transporter Laksana Guntur, Harus; Krisnahadi, Yanuar
IPTEK The Journal for Technology and Science Vol 28, No 2 (2017)
Publisher : IPTEK, LPPM, Institut Teknologi Sepuluh Nopember

This paper presents the result of vibration monitoring, simulation and the analysis of conveyor driving unit of a coal transporter. In steam power plant, coal transporter is on of the fundamental equiptment for coal handling and energy supply. Conveyor driving unit (CDU) is the unit in a coal tranporter which drive the conveyor and transport coal from the stockpile/coal yard to the burner. CDU failure cause instability in coal handling process and influence the production capacity of the power plant. To maintain the reliability of the coal transporter, vibration based condition monitoring is conducted. The vibration of CDU is affected by the tranported load, luffing angle and conveying rate. In this paper, the report is focused on the vibration monitoring result and analysis of the influence of the luffing angle and conveying rate (transported load) to the vibration.The CDU is mathematically modeled and its vibration is simulated. Here, conveyor belt tension at driver pulley is assumed to be the main source of vibration,which has frequency of 1.237Hz. Measurement results show that maximum amplitude occurs at frequency of 24.5 Hz, which is closed to the driving motor of the conveyor. The simulation results show that bigger luffing angle and conveying rate increase the vibration amplitude, specifically at horizontal (x) direction.

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