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TEKNIK

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Published by Universitas Diponegoro

ISSN : 08521697 EISSN : 24609919 DOI : -

Core Subject : Engineering,

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 522 Documents

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Adaptive Neuro-Fuzzy Inference System (ANFIS) for Controlling Level and Pressure on Deaerator Sumardi, Sumardi; Riyadi, Munawar A; Aprivirly, Lintang Nurlitha
TEKNIK Vol 40, No. 2 (2019): Agustus 2019
Publisher : Diponegoro University

DDeaerator is one of the most widely used plants in the chemical industry and marine steam power plant. Deaerator is used to eliminate oxygen in water that enters the boiler to avoid corrosion of the boiler pipes. Control of pressure and level in deaerator needs to be done to keep the process well. The purpose of the research is to design a control system that can keep pressure and level of deaerator on the set point un the presence of changes in the load and input systems. Deaerator should be controlled to keep its safety and efficiency. Adaptive Neuro-Fuzzy Inference System (ANFIS) is a combination of fuzzy logic control and neural network. Design of ANFIS requires an input-output data set obtained from a PI controller that is considered as a "teacher" for ANFIS for the learning process. The results of the simulation show that the system using ANFIS controller for controlling pressure and level deaerator in normal set point can produce very small maximum overshoot that is equal to 0% and small IAE value that is 7.898 for pressure, and 157.7 for level compared to PI

KELEMBAGAAN IMPLEMENTASI PROGRAM KREDIT MIKRO PERUMAHAN DI KOTA SEMARANG Prananing Tyas, Wido; Ruswanti, Endah
TEKNIK Volume 29, Nomor 1, Tahun 2008
Publisher : Diponegoro University

Housing microfinance is the latest program launched by Kemenpera since 2006. The program is aimed tohelp the low-income household by giving subsidy for new home construction and renovation. During itsimplementation, microfinance institution as an implementer has some internal problems, such as humanresource, management, financial, trustment, accountability and limited links. Because of the problems, thisstudy is important to explore the institutional framework of the housing microfinance implementation inSemarang. The aim of the present study is to identify the institutional framework of the housingmicrofinance implementation in Semarang, not only by the government as a facilitator but also by themicrofinance institutions as an implementer and the inhabitants of this capital as a user. In this research,there are three focus discussions, including institution as an implementer of the housing microfinanceprogram, variables of the microfinance institutional framework, and the last, comparison study of thehousing microfinance implementation by the microfinance institutions in Semarang and comparisonbetween implementation in Semarang and the other developing countries. The study is utilizing qualitativeresearch method by describing the implementation of housing microfinance and exploring its institutionalframework to give some detail descriptions of the housing microfinance implementation in Semarang

PERANCANGAN MODEL PENDUGAAN EFEKTIVITAS WADUK RESAPAN DI KOTA BOGOR TERHADAP OPTIMALISASI AKUIFER AIRTANAH Broto, Sudaryo; Susanto, Hadi
TEKNIK Volume 29, Nomor 3, Tahun 2008
Publisher : Diponegoro University

Flooding is a crucial problem in Jakarta city and there were many ideas to solve that problem, such ascanals development, land use management, applying soil conservation technique, check dam building,injection well, reservoir dam until rain moving technique. Reservoir dam is chosen by many experts as asolution to solve about flooding in order to increase and accelerate the rate of percolation to groundwaterinto their aquifer. this research is preliminary investigation to calculate the effectively of reservoir damthat is consider with water balance and groundwater flow into reservoir dam. In this research is developedby tank model that combine with 2 D of groundwater flow direction based on groundwater level

Modifikasi Pati Sukun (Artocarpus Altilis) dengan Teknik Oksidasi Menggunakan Hidrogen Peroksida Tanpa Katalis Budiyati, Catarina Sri; Kumoro, Andri Cahyo; Ratnawati, Ratnawati; Retnowati, Diah Susetyo
TEKNIK Vol 37, No 1 (2016): (Juli 2016)
Publisher : Diponegoro University

Salah satu sumber bahan pangan lokal yang belum banyak dimanfaatkan adalah buah sukun (Artocarpus Artilis) yang cukup banyak terdapat di Indonesia. Akan tetapi, pemanfaatan buah sukun terkendala pada kurangnya daya simpan buah segar. Oleh karena itu, perlu dilakukan upaya untuk meningkatkan pemanfaatan buah sukun dengan mengolahnya menjadi produk yang lebih luwes dengan daya simpan yang lebih baik, yaitu menjadi pati sukun. Sifat-sifat pati sukun perlu diperbaiki agar dapat digunakan sebagai pengganti tepung terigu. Tujuan dari penelitian ini adalah untuk memodifikasi pati sukun dengan cara oksidasi menggunakan larutan hidrogen peroksida. Dalam penelitian ini dikaji pengaruh konsistensi luluhan, konsentrasi hidrogen peroksida, waktu, dan suhu terhadap karakteristik fisikokimia pati sukun teroksidasi yang dihasilkan dan ditentukan kondisi optimalnya. Hasil penelitian menunjukkan bahwa semua variable yang dikaji tersebut mempengaruhi reaksi oksidasi pati sukun. Oksidasi pada konsistensi luluhan 20%, konsentrasi hidrogen peroksida 2% dan suhu 50Â°C mampu menghasilkan nilai swelling power dan water solubility yang terbaik. Reaksi oksidasi tidak mengubah struktur dan morfologi pati sukun termodifikasi secara signifikan. Â [Title: Modification of Breadfruit (Artocarpus altilis) starch through non-catalytic hydrogen peroxide oxidation] One of local source of food that has not been intensively explored is breadfruit (Artocarpus Artilis). However, the utilization of breadfruit is limited by the poor storage properties of the fresh fruit. Therefore, efforts should be made to improve the utilization of breadfruit to process it into more flexible products with better storability, suach as breadfruit starch. Breadfruit starch properties need to be improved so that it can be used to substitute wheat flour. The aim of this study was to modify the breadfruit starch by oxidation using hydrogen peroxide solution. This work studied examined the influence of consistency of starch slurry, hydrogen peroxide concentration, time, and temperature on the physicochemical properties of the oxidized breadfruit starch. The optimal conditions were also determined. The results showed that all of these variables affected the oxidation of starch breadfruit. The oxidation on starch slurry with consistency 20%, the concentration of hydrogen peroxide of 2%, and temperature of 50Â°C produced modified starch with best swelling power and water solubility. The oxidation did not significantly change the structure and morphology of the modified starch.

ANALISIS GAS TERLARUT PADA MINYAK ISOLASI TRANSFORMATOR TENAGA AKIBAT PEMBEBANAN DAN PENUAAN Hermawan, Hermawan; Syakur, Abdul; Iryanto, Irwan
TEKNIK Volume 32, Nomor 3, Tahun 2011
Publisher : Diponegoro University

The lifetime of transformers and its equipments are highly dependent on the quality of insulation system.Insulation is one important component in a transformer because generally, insulations used liquid and solidinsulation in accordance with its function as an insulating material and cooling media. At the time there usedtransformer oil aging and damage caused by several things such as impurities, water content, dissolved gases(Dissolved Gas Analysis-DGA), acidity and heating the oil. Transformers loading will cause a decrease in thequality of the transformers insulation system that resulted in the decreasing age of insulating oil.This paper explained the influence of aging on the rate of degradation of Dissolved Gases of power transformersinsulating oil. This research was conducted using sample data loading and maintenance of transformers byobtained directly with investigations into the transformers which is operating. There are three method todetermine quality of oil transformer i.e. Total Combustible Gases (TCG), Roger Ratio, Key Gas and DuvalTriangle Methods.Based on analysis result by using samples from a variety of loading conditions of the transformers with differentlevels we can conclude the quality and worthiness of insulation oil and the estimated the effective remaining lifeof transformers insulation system.

Penurunan Kadar Kromium Heksavalen (Cr6+) Dalam Limbah Batik Menggunakan Limbah Udang (Kitosan) Natalina, N.; Firdaus, Hidayati
TEKNIK Vol 38, No 2 (2017): (Desember 2017)
Publisher : Diponegoro University

Industri batik menghasilkan limbah cair pada proses pewarnaan dan pelorodan. Limbah cair yang mengandung logam berat berbahaya ini seringkali dibuang ke badan sungai secara langsung, sehingga mencemari air sungai. Upaya pengolahan limbah cair industri batik perlu dilakukan untuk mengurangi kandungan logam berat di dalamnya. Kitosan merupakan salah satu senyawa yang dapat digunakan untuk menurunkan kadar logam kromium heksavalen (Cr6+) dalam limbah cair batik. Penelitian ini bertujuan untuk mengetahui apakah kitosan dari limbah udang windu mampu menurunkan kadar kromium heksavalen (Cr6+) dalam limbah cair batik. Penelitian dilakukan pada skala laboratorium dengan menggunakan aliran kontinu. Kitosan dari limbah udang windu diproduksi melalui proses deproteinasi, demineralisasi, depigmentasi dan deasetiasi. Larutan K2Cr2O7 digunakan sebagai larutan pembanding dan kitosan murni digunakan sebagai kitosan pembanding. Berat kitosan yang digunakan dalam reaktor sebesar 2,8 gram. Laju alir di set-up sebesar 15 ml/menit. Pengambilan sampel dilakukan pada menit ke 0, 10, 20, 30, dan 40. Analisa dilakukan terhadap kandungan kromium hesavalen. Hasil penelitian menunjukkan bahwa efisiensi penurunan kromium heksavalen adalah 52,858% dan 71,782%, masing-masing untuk kitosan dari limbah udang windu dan kitosan murni

IDENTIFIKASI IRIS MATA MENGGUNAKAN TAPIS GABOR WAVELET DAN JARINGAN SYARAF TIRUAN LEARNING VECTOR QUANTIZATION (LVQ) Setiyono, Budi; Isnanto, R. Rizal
TEKNIK Volume 30, Nomor 1, Tahun 2009
Publisher : Diponegoro University

Biometric represents the human identification method development using natural characteristic of humanbeing as its bases. Every iris has the detail and unique texture, even differ between right and left eye.Theeye iris identification process in this research are data acquisition, early processing, feature exctractionand classification. Algorithm used for classification of texture slice the eye is Gabor wavelet filtering, andclassification process of slice the eye texture will be used by a Artificial Neural Network LVQ. Recognitionthe value of feature vektor in each iris obtained from to the number of right recognition value or thepercentage of right one. The best recognition percentage is 87,5 %.

LOAD FAKTOR PERALATAN PADA KAPAL CARGO TYPE LCT (Studi Kasus Kapal Lestari Abadi 03) Ariany, Zulfaidah
TEKNIK Volume 34, Nomor 1, Tahun 2013
Publisher : Diponegoro University

This article titled is equipment load factor on cargo ship LCT type by taking a case study on Lestari Abadi ship03, the study aims to predict electric consumption calculation of LCT shipâ€™s type which concerning with thenumber and type of generator; effective and efficience power consumption, safe and effective electric instalationand existing panel. So, minimum required output electric installed to Kapal Lestari Abadi 03 has to 150KW, asspecification performed by caterpillar C9TA 150KW, 188KVA, 1500rpm, 50Hz and 0.8.

Penerapan Teknik UV Mapping dan Texture Painting Dalam Pembuatan Film Animasi 3D Bujang Buta Setiawan, M Iqbal; Trisnadoli, Anggy; Nugroho, Erwin Setyo
TEKNIK Vol 40, No. 1 (2019): Mei 2019
Publisher : Diponegoro University

The use of UV Mapping and Texture Painting Technique in Indonesia is a country that is rich in folklore. Bujang Buta is one of the folklore originating from the city of Kampar. Many people do not know about the existence of detailed folklore. In this study raised the Bujang Buta folklore which will be attractively packaged in the form of 3D animated films. In the 3D animation film there are many techniques to make it, one of which is the UV Mapping and Texture Painting techniq ues that make 3D animated films more colorful. Making this animated film uses the Blender 3D application as its main medium. Based on the results of testing and analysis, the 3D animated film Bujang Buta Folklore has been verified by LAMR experts (Lembaga Adat Melayu Riau). The UV Mapping and Texture Painting technique has been successfully implemented into the making of the Bujang Buta 3D animated film. And based on the results of a questionnaire that has been given to 37 general public and 6 people who fo llow the organization there are 10 moral messages in the 3D animated film Bujang Buta.

PENGUKURAN DAN PEMETAAN KADASTRAL DENGAN METODE IDENTIFIKASI PETA FOTO Sudarsono, Bambang; Laila Nugraha, Arief
TEKNIK Volume 29, Nomor 1, Tahun 2008
Publisher : Diponegoro University

To justify the law enforcement in the landâ€™s ownership right, Government of Indonesia (GOI) hasestablished land registration program in all Indonesian territory that refers to the regulation. This landregistration program consists from several action which is, surveying, mapping, and land documentation.Land surveying should be refers to the cadastral technical rule and jurisdiction rule. Land surveying withphoto map identification could be applied by using photo map as base map registration. To verify the landboundaries in the field we must get an agreement from the landâ€™s owner, neighbours, local governmentofficer and surveyor. Land surveying that use identification method should be refers to the technicalspecification order from Badan Pertanahan Nasional (BPN). There are several limitations from theidentification method; we canâ€™t carry out this method in the crowd residence area and area which coveredby trees.

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