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INTEK: Jurnal Penelitian

Intek
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Published by Politeknik Negeri Ujung Pandang

ISSN : 23390700 EISSN : 26155427 DOI : -

Core Subject : Science, Engineering,

Computer Science & IT Engineering

INTEK is a journal managed by the Journal and Publication Development Unit of Ujung Pandang State Polytechnic, which is published twice a year, in April and October. The journal INTEK has also been indexed. The INTEK Journal accepts research scripts in the fields of technology and engineering such as: Electrical, Mechanical, Civil and Chemical Engineering.

Arjuna Subject : Umum - Umum

Articles 10 Documents

Search results for , issue "Vol 3 No 2 (2016): Oktober 2016" : 10 Documents clear

Studi Penurunan Kadar Logam Besi (Fe) dan Logam Mangan (Mn) pada Lempung terhadap Perubahan Arus Listrik dalam Solenoida Zain, Abdul; Muliawan, Arief
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

In the soil there are many compound of Fe and MnÂ as well as in the clay. Those two compounds need to beÂ reduced to improve the resistive value of the clay. OneÂ method to reduce those compounds is by electromagneticÂ filter using solenoid. From the experiment circuit, it wasÂ found that the resistive value was 4.5 Ohm with maximumÂ current of 5 Ampere. Concentration of Fe and Mn afterÂ filtered were 0.46 ppm and 0.40 ppm respectively.

Rasio Bekatul Padi dengan Pelarut pada Ekstraksi Minyak Bekatul Padi Masâ€™ud, Fajriyati; Pabbenteng, Pabbenteng
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Rice bran oil is the oil extracted from rice bran. ThisÂ is edible oil that is very good for health so that potential as aÂ functional food, and can be develop the agroindustry. SolventÂ extraction process is done using n-heksane and ethanol. TheÂ purpose of this study was to determine the best ratio of riceÂ bran with n-heksane and ethanol to obtain the highest percentage of the oil. The main ingredient of this study is rice bran, n-heksane and ethanol. The extraction process is done at a temperature of 55Â° C, 200 rpm for 5 hours. The results showed that the best ratio of bran and n-heksan to produce Â the ultimate percentage of oil is 1: 7 that is equal to 7,53%, asÂ well as the best ratio of bran and ethanol to produce theÂ ultimate percentage of oil is 1: 6 that is equal to 8,49%.

Design Analysis of Driven Pile Foundations of Retaining Walls in Granular Soils Suradi, Muhammad; Nabi, Abdul; Hasanuddin, Haeril Abdi; Muktadiru, Andi Muhammad; Ridhatullah, Agung
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

The aim of this paper is to investigate the effect of the pile of retaining wall design parameters including slope height and soil shear strength on the depth of driven piles. Parametric study was performed by varying the slope height and internal friction angle of granular soils in order to investigate the effect of these parameters on the pile depth. This study indicated that the pile depth increased more significantly with the increaseÂ of slope height for low internal friction angle (7,69 m for Ï• = 20Âº)Â than those for high internal friction angle (3,87 m for Ï• = 40Âº) with the increase of slope height from 2 m to 10 m. Meanwhile this study showed larger increase of the pile depth (2.86 m) for the dcrease in internal friction angle when slope soils and subgrade have the same internal friction angle than those when they have different internal friction angle (1.41 m) for 6 m in theÂ slope height with the decrease of internal friction angle of soilsÂ from Ï• = 40Âº to 20Âº.

Desain dan Pembuatan Cetakan Sistem Injeksi untuk Cetakan Plastik Adonan Donat Hadi, Syamsul; Murti, Tandya Nanda Haswari; Sayekti, Saifudin Kalih; Setiawan, Agus
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

The problem lies in the length of process, it is hard tomake, and a donut shape (circle-shaped cake and hollow in the middle) are not good made by the domestic industry that createdÂ manually (by hand). The purpose of the design and manufactureÂ of plastic mold injection molding system for donuts is to speed upÂ the processing of dough donut with easy and efficient way.Â Methods of design and manufacture of plastic molding dough donut capacity of 30 product/hour with injection system include:Â survey for dimensions of donuts on the market, determining theÂ thermal expansion of the dough after frying for the determinationÂ of shrinkage in the dimensions of the mold, mold design on theÂ top and bottom, the design of cooling systems, the design forÂ ejection system for mold products, working drawings, machining components, assembly, testing, and the calculation of production costs. The results of the design and manufacture of plastic molding dough donut is a donut molds for parts of the top andÂ bottom made of plastic material types of polypropylene (PP).

Konservasi Air Tanah Melalui Pembuatan Sumur Resapan Air Hujan Di Kelurahan Maradekaya Kota Makassar Azis, Akhmad; Yusuf, Hamzah; Faisal, Zulviyah
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Objectives to be achieved from the program scienceÂ and technology for the Community (IbM) This is a crisis of groundwater that occur in the District Maradekaya, MakassarÂ City can be resolved as well as long term targets is to encourage the local government of Makassar for the decision on the obligation for the people of Makassar making infiltration wells in his yard. TheÂ method will be used in these activities in the form of counseling for people in RW 03 and RW 04 about the dangers of groundwater in case of crisis, the way of making infiltration wells as well as manufacture in 5 homes in every RW (RW 03 and RW 04). Thetest results of water after infiltration wells through which rainwater is the quality of well water for the better. It is characterized by a decrease in turbidity of 27,5 %, NaCl 11,5 %,Â Sodium 12,3% and Chloride 11,1%.

Analisis Gangguan Tidak Seimbang pada Line Transmisi GI Sungguminasa-GI Tallasa Marwan, Marwan; L, Ruslan; Samsul, Nur Malasari
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

The main purpose of this research is to determine the short circuit current when there is a fault occurred on Transmission line between Sungguminasa Sub Station and Tallasa Sub Station. PT. PLN measured that the short circuit current on this transmission line is 2.8 kA. To justify the result, symmetrical component method is applied using MATLAB. The results shows that measured value from PLN is equal with the obtained results using MATLAB. This research was conducted on 19th January 2016 at 14:13 WITA.

Analisa Kinerja Struktur Beton Bertulang Pasca Kebakaran Latip, Abdullah
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

This Paper aims to analyze the performance level ofÂ Pasar Butung post-fire on December 15, 2010. The fire wasÂ centered on the 1st and 2nd floor. Data retrieval include visualÂ observation, carbonation test, concrete hammer test, concrete coreÂ test and tensile test of steel reinforcement that was held on January, 2011. All data that was taken will use to analyze the structure. Observations indicate that the temperature of the fire around 400oC. Beams and columns on floors 1 and 2 had cracks and the quality of concrete fell 62% from 21.15 MPa to 14 MPa at the outerÂ cross-section. While the floor plates 2 and 3 having a width of cracks and residual concrete quality is only 11.57 MPa. Pushover analysis (static lateral load) is a nonlinear static analysis that can provide detailed information about the collapse behavior of structures against earthquake loads, while the performance point is the magnitude of the maximum displacement of the structure during an earthquake plan. Results of 3D nonlinear static pushoverÂ analysis on the structure of Pasar Butung shows that performanceÂ point is achieved when the base reaction V reach 484.97 tons with displacement of 0.021 m (2.1 cm) at step 3. Results of analysis showed that the performance of the structure is still within theÂ limits of Life Safety.

Pengembangan Sistem Penangkal Petir dan Pentanahan Elektroda Rod dan Plat Saini, Makmur; Yunus, A.M. Shiddiq; Pangkung, Andareas
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

The specific objective of this research is to producea system of internallightning and Eksternal lightning rod withgrounding which has been widely used in industries such aslightning protection and grounding system of substation,transmission lines and coupling wire used in high-rise buildingseither belong to government or private property. In this study,lightning rod is located outside the building structure that servesto catch or receive the bolt of lightning and the lightning deliverto the ground safely. In this study there were 5 different depths ofelectrode rod; 3 m, 5 m, 7 m, 9 m, and 12 m, moreover, 5 widevariety of electrode plate that are 1 x 1 m2, 0.75 x 0.75 m2, 0.5 x0.5 m2, 0.35 x 0.35 m2, 0.25 x 0.25 m2. For grounding electrodeÂ rod with a depth of 3 m, 5 m, 7 m, 9 m, 12 m in dry conditionsÂ grounding resistance values obtained ranged from 1.55 to 2.03Â Ohm. For moist soil conditions, grounding resistance valuesÂ obtained ranged from 2.21 to 2.60 Ohm. For wet soil conditionsÂ grounding resistance values obtained ranged from 1.97 to 2.34Â Ohm. For grounding plate, R11 and R12 on the dry conditionsÂ grounding resistance values obtained ranged from 2.08 to 2.45Â Ohm. For moist soil conditions grounding resistance valuesÂ obtained ranged from 1.88 to 2.18 Ohm. For wet soil conditionsÂ grounding resistance values obtained ranged from 1.55 to 2.06Â Ohm. On the external lightning rod with two added electrodes with a depth of 12 m and then connected in parallel with theÂ electrode plate to get the smallest value of grounding resistance inÂ accordance with the standards prescribed.

Produksi Fruktosa dari Tongkol Jagung Sebagai Gula Rendah Kalori Mahyati, Mahyati; Pasanda, Octovianus SR
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Corn cobs as waste organic agricultural having contentÂ±45% cellulose. Cellulose is a biopolymer that can be convertedÂ into glucose. Glucose can be produced by A.niger and T.resseiÂ through fermentation process. Glucose in generate can be developed to become fructose syrup through a process isomerisasi with enzymes glucoisomerase prodused by Streptomyces Sp. This research using corn cobs yellow as a sourceÂ of cellulose for the production of fructose. The purpose of this research is to find concentration fructose syrup obtained from fermentation process. Convertion cellulose be done in enzimatis use A.niger and T.ressei through the fermentation process by adding Saccharomyces cerevisiae. The process continues with isomerization use Streptomyces Sp. The process isomerization done with variations time is 1,2,3, and 4 hour and variation pH 6,7, and 8. Analysis concentration glucose and fructose of fermentation product performed with GCMS. The highest result obtained was fermentation 1 hour at pH 6 with glukoce 6,7% and fructose 16,22%.

Determining Interval Time of Maintenance in Bosowa Cement Indonesia using Reliability Method Suyuti, Muhammad Arsyad; Nur, Rusdi
INTEK: Jurnal Penelitian Vol 3 No 2 (2016): Oktober 2016
Publisher : Politeknik Negeri Ujung Pandang

Maintenance for machining and production facilityÂ is an important aspect to ensure a smooth production process.Â During this time, it was performed regular maintenance based onÂ technical advice from supplierâ€™s engines which just shows thingsÂ in general without considering the actual operating conditions.Â This paper aims to plan the maintenance strategies for the FinishÂ Mill unit based on reliability analysis by considering the target system reliability and cost of improving reliability. The data distribution obtained the most appropriate distribution. Based on the data obtained distribution parameters, then the function of the reliability of each part an be determined so that the value of the reliability of each part and the overall system for a specific time period can be calculated. The results showed that the failure or breakdown Mill Finish Unit was majority caused by the part of 561.BM1, 531.WF1, 531.BC6, 531.BC2, 531.BC1, 561.SR1 andÂ 531.BC3. it means that need to focus o the reliability analysis to allocate their parts.

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Serpian

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intek@poliupg.ac.id

Editorial Address
Politeknik Negeri Ujung Pandang Kampus 1 Gedung Administrasi Lantai II Jalan Perintis Kemerdekaan KM.10 Tamalanrea Makassar 90245

Location
Kota makassar,

Sulawesi selatan

INDONESIA

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Serpian

Contact Email serpian@poliupg.ac.id

Phone +6285241204400

Journal Mail Official intek@poliupg.ac.id

Editorial Address Politeknik Negeri Ujung Pandang Kampus 1 Gedung Administrasi Lantai II Jalan Perintis Kemerdekaan KM.10 Tamalanrea Makassar 90245

Location Kota makassar, Sulawesi selatan INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Serpian

Contact Email
serpian@poliupg.ac.id

Phone
+6285241204400

Journal Mail Official
intek@poliupg.ac.id

Editorial Address
Politeknik Negeri Ujung Pandang Kampus 1 Gedung Administrasi Lantai II Jalan Perintis Kemerdekaan KM.10 Tamalanrea Makassar 90245

Location
Kota makassar,

Sulawesi selatan

INDONESIA