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TEKNIK
Published by Universitas Diponegoro
ISSN : 08521697     EISSN : 24609919     DOI : -
Core Subject : Engineering,
Journal yang mempublikasikan artikel-artikel ilmiah dari berbagai disiplin ilmu rekayasa/keteknikan. Artikel-artikel yang dipublikasikan di Jurnal TEKNIK meliputi hasil-hasil penelitian ilmiah asli (prioritas utama), artikel ulasan ilmiah yang bersifat baru (tidak prioritas), atau komentar atau kritik terhadap tulisan ilmiah yang dipublikasikan oleh Jurnal TEKNIK.
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Articles 444 Documents
Rancang Bangun Sistem Informasi Monitoring Menggunakan Metode Agile dengan Dynamic System Development Model Guna Mendukung Gender Mainstreaming Strategy (Studi Kasus: Politeknik Caltex Riau) Salsabila, Syevira; Trisnadoli, Anggy; Muslim, Istianah
TEKNIK Vol 40, No. 3 (2019): Desember 2019
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (877.265 KB) | DOI: 10.14710/teknik.v40i3.25704

Abstract

Gender merupakan isu yang harus diperhatikan oleh setiap institusi pendidikan. Kesenjangan gender dalam berbagai masalah terkait pengelolaan institusi akan menimbulkan dampak terhadap ketidakadilan gender. Solusi dari permasalahan tersebut adalah adanya dokumen Rencana Strategi Pengarusutamaan Gender (Renstra PUG) pada setiap institusi pendidikan. Penelitian ini bertujuan untuk membangun sebuah Sistem Informasi Monitoring menggunakan metode Agile dengan model Dynamic System Development Model (DSDM) guna Mendukung Gender Mainstreaming Strategy. Studi kasus pada Politeknik Caltex Riau.  Sistem informasi yang dibangun mampu menampilkan informasi yang update dan akurat. Ini mendukung pimpinan institusi dalam pengambilan keputusan dan penentuan kebijakan terhadap gender. Hasil penelitian telah diuji secara fungsional dan divalidasi oleh expert
DETAIL ENGINEERING TEMPAT PEMBUANGAN AKHIR (TPA) REGIONAL PEKALONGAN Badrus Zaman; Syafrudin Syafrudin; Diah Pratiwi
TEKNIK Volume 29, Nomor 3, Tahun 2008
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.619 KB) | DOI: 10.14710/teknik.v29i3.1962

Abstract

Regional Final Disposal (Regional Landfill) Pekalongan is place a waste serves 3 surrounding areas. The threeareas that served are Pekalongan City, Pekalongan Regency and Batang Regency. These areas are close enoughso that Regional Landfill concept is suitable to be applied in these areas. This Regional landfill is planned to usethe concept of sanitary landfills. Location of land to be used as Pekalongan Regional Landfill is locatedprecisely at the border village of Sengare-Batursari, District Talun in the administrative area of Pekalongan.The results of this study is the design of a sanitary landfill with landfill leachate channeling system, gasventilation equipment and various other supporting facilities, including weighbridge and procurement ofrequired heavy equipment. Approxymately costs required to build the design is Rp. 88.137.990.883,56
PENURUNAN MODEL PERMUKAAN DIJITAL (DSM) MENJADI MODEL ELEVASI DIJITAL (DEM) DARI CITRA SATELIT ALOS PALSAR (Studi kasus: NAD Bagian Tenggara, Indonesia) Julzarika, Atriyon; Sudarsono, Bambang
TEKNIK Volume 30, Nomor 1, Tahun 2009
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2290.427 KB) | DOI: 10.14710/teknik.v30i1.1814

Abstract

Alos satellite is one of the natural resources satellite that could be used in 3D applications. The problemsthat be taken in generate 3D model with satellite imagery are the model always be formed as DigitalSurface Model (DSM), not Digital Terrain Model (DTM), Digitallen HöheModellen (DHM), Digital GeoidModel (DGM) or Digital Elevation Model (DEM). The reference system of 3D model that are produced byAlos satellite image still as surface for z axis, for x axis and y axis has been closed to 2D reference systemin some certain datum and system of map projection. In case, it needs a research for observating theaccuracy and precision of Alos satellite data using a least square adjustment of parameter methods. Theresults of this research will be used as reference for next research to invent a way for changing DSM fromAlos satellite image to be DEM, DTM, DHM, DHM, and DGM digital-automatically. It is a new innovationof differentialing technical of 3D model.A differentialing technical from DSM to be DEM could be done with least square adjustment in parametermethods. It calls DSM2DEM*. This new innovation methods for differentialing DSM2DEM. In that studycases, differentialing technical that are used be divided for two class, that are lowland area and highlandarea. Differentialing in that two class use similar methods, just is differentiated in sum up of researchingpoints that are used. In this research study of cases are in highland area and lowland area. In highlandarea uses minimize 14 researching points and in lowland area uses minimize seven researching points.That differentialing technical are done in Alos images. In other satellite images, photos, videos that studyin highland and lowland area also use this methods for differentialing DSM2DEM. Order level that areused as research points will influence the quality of its data accuracy and precision.
MENGANALISA UNJUK KERJA PENGERINGAN IKAN TERI DENGAN SISTEM SIRKULASI UDARA PAKSA Darmanto, Seno; Setyoko, Bambang
TEKNIK Volume 28, Nomor 2, Tahun 2007
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (164.459 KB) | DOI: 10.14710/teknik.v28i2.2137

Abstract

Experiment is done to know the performance of “teri/stolephorus” fish drying with forced air flow system. Theperformance of fish drying is based on moisture of fish, fan/fan velocity, operation temperature and time. Theresearch is done at laboratory by using drying machine with forced air flow system. Based on data analysis itshows that the moisture of fish achieves 20% on fan velocity maximum 2,8 m/s and times operation 3 hours
Optimization of Penicillium Lagena Medium Cultivication on Antifungal Pathogen of Phellinus Lamaoensis Using Surface Methode Nabilah, Siti; Sunaryanto, Rofiq; Syamsu, Khaswar
TEKNIK Vol 38, No 2 (2017): (Desember 2017)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (368.107 KB) | DOI: 10.14710/teknik.v38i2.10306

Abstract

Phellinus lamaoensis (Murr.) Hein is fungal pathogen that can cause brown root rot disease in cocoa, tea, rubber, and coffee plants. Endophytic fungi, Penicillium lagena, isolated from bandotan (Ageratum conyzoides Linn.), medicinal plant, is able to inhibit the growth of pathogenic, P. lamaoensis. The effect of carbon source, nitrogen source, and mineral solution was studied. Lactose, yeast extract, and mineral solution were media components which showed significant effect toward production of P. lagena active compound. Composition optimization of these three medium components was done by response surface methodology (RSM). The Optimal response region of the significant factor was predicted by using a second order polynomial model with statistical design, central composite design (CCD). Higest production of P. lagena active compound by quadratic model was predicted to be 69.233%  with medium composition 44.77 g L-1 lactose, 13.02 g L-1 yeast extract, and 15.95 mL L-1 mineral solution. Verification value in laboratory is 58.365%, lower 15.7% than its prediction. Optimization increase P. lagena active compound 9 fold compared to unoptimize media.
ANALISA ELECTRODE CONSUMABLE TYPE OK AUTROD 12.10 DENGAN PENGELASAN SUBMERGED ARC WELDING (SAW) PADA BLOCK KAPAL DCV 18500 DWT DI PT. JASA MARINA INDAH SEMARANG Kiryanto, Kiryanto; Sasmito Hadi, Eko
TEKNIK Volume 31, Nomor 2, Tahun 2010
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (238.681 KB) | DOI: 10.14710/teknik.v31i2.1768

Abstract

In this of globalization is growing very rapidly advancing technology. As well as in shipyard industry is toshipbuilding process. Submerged Arch Welding (SAW) is as joint methode of ship construction. Purpose ofresearch know number of electrodes wich requirement on block welding the ship DCV 18500 DWT in JasaMarina Indah Shipyard Semarang.The specimen experiment used is ST 42 low carbon steel. Variation of plates tickness is 12, 13, 14, 17, 19 and24 mm. Research step is carried out by making the specimen with variation thickness respectively. Specimendimensions length x width is 500 mm x 50 mm. The number of each specimen was made of three pieces. Thendo the measurement welding length, length and weight electrodes and slag welding.The analysis result of data welding on the specimen can be known number of electrode s and fluxs inSubmerged Arch Welding (SAW). The aplication of this research is the block DB 5(p/c/s), SS5A(p/s), SS5B(p/s), UD 5C, and TB 102 (p/c/s. Weight of consumable electrodes is 2185.31 kg (73 roll) and number offlux used wight is 2967.95 kg (119 bag).
PENGARUH PERUBAHAN KECEPATAN KAPAL TERHADAP LEVEL KETINGGIAN AIR PADA SISTEM PALKAN IKAN HIDUP DENGAN SISTEM NATURAL UNTUK KAPAL IKAN TRADISIONAL DI KABUPATEN REMBANG JAWA TENGAH Sasmito Hadi, Eko; Wilma A, Wilma A; Munardi, Robby; Al Fahsan, Al Fahsan
TEKNIK Volume 34, Nomor 1, Tahun 2013
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (700.252 KB) | DOI: 10.14710/teknik.v34i1.4814

Abstract

Development of conventional fish hold design to live fish hold design may provide an alternative solution to keepcosts of preservation of fish catches down. Live fish hold systems left the water in the hold with sea water tocirculate around by giving a hole at the base of the hatch. Rembang traditional fishing vessel has the basiccharacteristics of a flat bottom with a long form of the stern board and has a habit of leaning on the edge of theocean with a sloping surface.The research was carried out on several models of variations in the number of holes and diameter of holes.Water in the live fish hold with ship stationary state will have the same height with a draught of ship, but asincreases of speed of ship then the height of water in the hold will decrease.Based on the analysis and calculation of Computational Fluid Dynamics method results obtained show that theoptimum velocity of each model reaches 7 knots. Models with a variation of amount 4 holes with 2 inch diameterhole has an average altitude of the highest water level of 2.16 m at a speed of 7 knots.
Pemodelan Pola Operasi Sistem Pompa Pada Desain Polder Guna Mitigasi Banjir Dan Rob Di Wilayah Semarang Timur Arbaningrum, Rizka
TEKNIK Vol 39, No. 2 (2018): Desember 2018
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (678.845 KB) | DOI: 10.14710/teknik.v39i2.18045

Abstract

Floods and robs that often occur in the East Semarang region result in economic, social and environmental losses. In order to improve this condition, permanent handling is needed, namely by making a polder system consisting of sea dikes, retention ponds and pump houses. The purpose of this study was to analyze the modeling of the operational pattern of the pump system in the polder design. The stages of modeling the operational pattern of the pumping system starts from the calculation of flood discharge, modeling of retention ponds, and pumps using HEC-HMS 4.0 software. The next step is analyzing the operational pattern of the pump system. From the results of the study obtained a plan in 25 annual flood discharge for retention ponds is 138 m³ / s. The design of the retention pond is 210 hectares with a depth of 3.7 m. The pump capacity required is 15 m³ / s with a pump composition with a capacity of 2.5 m³ / s and 5 m³ / s, each of 2 units. The pump modeling analysis uses a pump with a capacity of 2.5 m³ / s of 2 units and 5 m³ / s of 6 units. From the results of the analysis show that the operational pattern uses an elevation-discharge function, where the function forms the operational pattern of each pump which will operate based on the water level evaluation criteria for each pump. With these operational patterns, it will reduce operational and maintenance costs
PERHITUNGAN POTENSI BAHAN TAMBANG SIRTU DI WILAYAH SUNGAI DI KABUPATEN PEKALONGAN Najib, Najib
TEKNIK Volume 30, Nomor 3, Tahun 2009
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (270.886 KB) | DOI: 10.14710/teknik.v30i3.1890

Abstract

Pekalongan Residence has a relatively many sand and gravel deposits particularly in river area. Nowadays,many locations have been exploited by local residences or investors from other regions. Even though theexploitation has running, up to now the local government doesn’t know yet how many reserve indicationmaterial deposits in that area. As the result of that condition, it is called for the research to determine thepotential of mining resources in river area. The factors estimate the mining potential based on geologicconditions such as elevation and deposit types. This research use grid and trapezium method. Based onlaboratories tests showed that the dominant materials in that area is up to sand size(around 87 – 98%). Thepotential of deposits is divided into three i.e. river part, levee part and land part. The total of potential in eachdistrict are Kesesi (515.625 m3), Kajen (78.295m3), Karanganyar (1.938.751m3), Wonopringgo( 1.334.375 m3),Doro( 1.984.375 m3), Talun( 1.355.625 m3), Karangdadap( 140.150 m3) and Kedungwuni( 130.000 m3).
PENINGKATAN KUALITAS DAN PROSES PEMBUATAN BIODIESEL DARI BLENDING MINYAK KELAPA SAWIT (PALM OIL) DAN MINYAK KELAPA (COCONUT OIL) DAN BANTUAN GELOMBANG ULTRASONIK Satriadi, Hantoro; Nafiega, Favian; Widayat, W.; Dipo, Rheza
TEKNIK Vol 35, No 2 (2014): (Desember 2014)
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1314.816 KB) | DOI: 10.14710/teknik.v35i2.7020

Abstract

Keterbatasan solar sebagai sumber energi bahan bakunya tidak dapat diperbaharui menuntut adanya bahan baku alternatif yang dapat diperbaharui dan ramah lingkungan untuk pembuatan biodiesel. Reaksi utama produksi biodiesel adalah esterifikasi dan transestirifikasi yang berlangsung lambat dan membutuhkan banyak katalis dan alkohol. Reaksi yang terjadi belum sempurna dan belum memenuhi standar SNI dan ASTM. Untuk memperbaiki mutu biodiesel serta menghasilkan yield maksimal, maka dilakukan blending bahan baku antara minyak kelapa sawit dan minyak kelapa dan dengan bantuan gelombang ultrasonic. Penelitian ini bertujuan untuk mempelajari pengaruh variabel perbandingan volume minyak kelapa sawit dan minyak kelapa, perbandingan volume methanolminyak, dan persentase berat katalis terhadap minyak terhadap hasil atau yield biodiesel. Alat utama yang digunakan adalah reaktor yang dilengkapi pembangkit gelombang ultrasonic dengan temperature 60 oC, tekanan 1 atm, volume 3 liter, dan frekuensi 28 kHz. Variabel proses pada penelitian ini adalah perbandingan volume minyak sawit dan kelapa 2:1, 3:1, dan 4:1, pebandingan volume metanol-minyak 0,2:1, 0,25:1, dan 0,3:1, dan persentase berat katalis KOH terhadap minyak 0,3%, 0,5%, dan 0,7%. Hasil penelitian didapat konversi tertinggi dicapai pada variabel perbandingan volume minyak sawit dan kelapa 3:1, perbandingan volume metanol/minyak 0,25:1, dan persentase berat katalis terhadap minyak dengan yield 97,26%.[A Improvement of Quality and Process for Biodiesel Production from Palm Oil and Coconut Oil Blends with Ultrasound Assisted] Limitations of solar energy as a source of raw material cannot be renewed demands for alternative raw materials that are renewable and environmentally friendly for the manufacture of biodiesel. The main production of biodiesel reaction is esterification and transestirifikasi which runs slow and requires a lot of alcohol and a catalyst. Reactions that happen yet perfect, and has not met the standard of SNI and ASTM. To improve the quality of biodiesel as well as produce maximum yield, then do the blending of raw materials between Palm oil and coconut oil and with the help of ultrasonic waves. This research aims to study the influence of variable ratio of the volume of palm oil and coconut oil, methanol-oil volume ratio, and the percentage of weight of the catalyst to oil to biodiesel results or yield. The main tool used by the reactors are equipped with ultrasonic wave generator temperature 60 oC, pressure 1 atm, 3 liters of volume, and frequency 28 kHz. Process variables in this study is a comparison of the volume of palm oil and coconut 2:1, 3:1 and 4:1, ratio volume of methanol-oil 0.2:1, 0.25:1, and 0,31:1, and the percentage of weight of KOH catalyst to oil 0.3%, 0.5% and 0.7%. Results of the study had the highest conversion achieved at variable volume ratio of palm oil and coconut 3:1, a comparison of the volume of methanol/oil 0.25:1, and the percentage of the weight of oil with the catalyst to yield 97,26%.Copyright (c) by Fakultas Teknik, Undip. All right reserved.

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