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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 518 Documents

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Rancang Bangun Alat Terapi Lengan Continous Passive Motion (CPM) dengan Control Electromyograph (EMG) Untuk Pasien Pasca Operasi dan Stroke Setiono, Fajar; Rofii, Faqih; Setiawidayat, Sabar
TEKNIK Vol 40, No. 3 (2019): Desember 2019
Publisher : Diponegoro University

Continous Passive Motion (CPM) adalah gerakan pasif yang terus menerus berfungsi melatih kinerja lengan dan kaki untuk pemulihan kekakuan gerakan yang diterapkan setelah operasi dan sakit strok. Electromyogram merupakan alat yang digunakan untuk merekam dan menganalisis sinyal myoelectric pada aktifitas otot lengan. Peralatan kesehatan dalam bidang fisiotherapy telah mengalami berbagai perkembangan untuk pemulihan pasien patah tulang yang membutuhkan alat bantu perangkat (CPM) . Perangkat CPM yang ada masih menggunakan sistem analog dan tidak ada sistem monitoring kondisi pasien, maka di perlukan peralatan yang dapat digunakan secara otomatis untuk mengendalikan mekanik dengan memakai motor dc. Rotary Encoder dan rangkaian Pulse Wave Modulation dan memonitoring pasien secara kontinu. Pada skripsi kali ini perangakat Continuous Passive Motion (CPM) lengan Dengan Control Electromyograph (EMG) di gabungkan untuk menyatukan kedua fungsi masing â€“ masing alat sehingga alat ini dapat mengoptimalkan proses penyembuhan terhadap pasien. Hasil dari penelitian ini menunjukan identifikasi pembacaan sensor sinyal EMG.

COMPARATIVE ANALYSIS OF GROUNDING RESISTANCE VALUE IN SOIL AND SEPTICTANK Syakur, Abdul; Juningtyastuti, Juningtyastuti; Dermawan, Arif
TEKNIK Volume 29, Nomor 3, Tahun 2008
Publisher : Diponegoro University

The aim of grounding system to protect of electrical equipment and instrumentation system and peopletogether. The lightning stroke near the strucutre of building can damage of equipment and instrumentationsystem. Therefore, it is very important to protect theese electrical and electronic equipment from lightningstrike uses lightning protection system and grounding system.This paper presents kind of grounding system at type of soil and place. The measurement of groundingresistance in soil and septictank have done. Types of soil for grounding resistance measuring aremarshland, clay and rockland.The measurement results of grounding resistance show that value of grounding resistance depend ondeepness of electrode and kind of soil and septictank. Grounding resistance value in septictank is morelower than soil.

KINETIKA REAKSI ESTERIFIKASI GLISEROL DAN ASAM ASETAT MENJADI TRIACETIN MENGGUNAKAN KATALIS ASAM SULFAT Satriadi, Hantoro
TEKNIK Vol 36, No 2 (2015): (December 2015)
Publisher : Diponegoro University

Biodiesel merupakan salah satu energi alternatif yang diharapkan dapat menggantikan bahan bakar diesel. Gliserol merupakan produk dengan produksi biodiesel dari reaksi transesterifikasi. Gliserol saat diesterifikasi dengan asam asetat untuk membentuk triacetin. Kegunaan triacetin sangat baik untuk makanan dan non makanan. Untuk bahan makanan, triacetin dapat digunakan sebagai bahan aroma dalam permen, minuman dari susu, minuman ringan dan permen karet. Adapun non-makanan dapat digunakan untuk pelarut pada parfum, tinta cetak, pelarut dalam rasa, plasticizer untuk resin selulosa, polimer dan co-polimer, bahkan dapat digunakan sebagai bahan aditif bahan bakar untuk mengurangi knocking di mesin mobil. Dalam penelitian ini akan diperoleh kondisi optimum pembuatan triacetin. Volume total gliserol dan asam asetat 600 ml, kecepatan pengadukan 100 rpm dan berat katalis adalah 5% berat gliserol. Dalam penelitian ini proses analisis kualitatif dengan menggunakan instrumen FTIR telah mendeteksi adanya produk triacetin. Hasil analisis kuantitatif diperoleh persamaan kecepatan reaksi esterifikasi dan kondisi optimum yang dihasilkan pada rasio mol reagen gliserol dan asam asetat 1:7 dengan temperatur 120 oC pada menit ke-5 dengan nilai konversi sebesar 67,63%. [Title: Kinetics of Esterification Reaction of Triacetin Formation from Glycerol and Acetic Acid Using Sulfuric Acid Catalyst] Biodiesel, as one of alternative energy, is expected to replace diesel fuel. Glycerol is a by product of biodiesel production from transesterification reaction. The glycerol was esterified with acetic acid to form triacetin. The triacetin was useful for food and non- food application. For food application, the triacetin can be used as a fragrance ingredient in candy, beverages from milk, soft drinks and chewing gum. Meanwhile, for non-food materials, it can be used for solvent triacetin on perfumes, printing ink, solvent in flavor, plasticizer for cellulose resin, polymer and co-polymers, it can even be used as fuel additives to reduce knocking in car engines. In this study, the research results in optimum conditions on manufacturing triacetin. Total volume of glycerol and acetic acid is 600 ml, stirring speed is 100 rpm and the catalyst laoding is 5 wt.% glycerol. From qualitative analysis using FTIR, the triacetin product was detected. From quantitative analysis, the rate equation of esterification reaction and optimum conditions were resulted at mole ratio of glycerol and acetic acid of eagents 1:7, temperature of 120 0C at 5 minutes process and the conversion of 67.63%.

EVALUASI DOKUMEN ASPEK TEKNIS PADA PROSES PELELANGAN KONTRAKTOR DENGAN APILKASI METODE AHP (ANALYTICAL HIERARCHY PROCESS) Wibowo, M.Agung; Suliantoro, Heri; Marithyanti, Shinta
TEKNIK Volume 32, Nomor 2, Tahun 2011
Publisher : Diponegoro University

The procurement process could be defined as all the activities required in getting a product or a service from thesupplier to the customer. It consists of the purchasing function, storing, transportation and managers therelations between suppliers and internal customers. The Analytical Hierarchy Process (AHP) is acomprehensive, logical structured frame work. It allows to improve understanding of complex decission systemby decomposing the problems. The AHP is based three principles which are decomposition of the problems,comparative judgement of the elements and synthesis of the priorities.The objectives of this study are to identify criteria involved in the contractor bidding process, to elaboratetechnical aspect involeved in the bidding process based on committeeâ€™ experince and to discuss and to comparethe outputs obtained based on the committeeâ€™ experience and the application of the AHP.The results of the study said that construction method has the highest ranking compare other apecst which is27%. The next ranking are time scheduling (16%), technical specification and material (13%), organizationalproject and person incharged (10%), construction labour scheduling (10%), list of equipment (8%), cash flowestimation (6%), list of sub-contractor and project site facilities (5%). These rangking could be used todetermine the score of contractors to do bidding process.

PENUKAR KALOR CANGKANG DAN TABUNG EFEKTIF UNTUK MENDINGINKAN MINYAK PELUMAS MESIN DIESEL DENGAN PENYARINGAN SISTEM CABANG Murni, Murni
TEKNIK Volume 28, Nomor 2, Tahun 2007
Publisher : Diponegoro University

Lubrication is important parameter in whole operation in diesel engine, bad lubrication will affect trouble inoperation lubrication have double function decrease friction and cooling. So lubrication has to be treatmentto increase quality by cooling method. Cooling method is done with bat exchanger of shell and tube type. .

EKSISTENSI â€œPASAR SEMAWISâ€ SEBAGAI SALAH SATU STRATEGI REVITALISASI KAWASAN PECINAN SEMARANG Purwanto, Edi
TEKNIK Volume 31, Nomor 2, Tahun 2010
Publisher : Diponegoro University

Revitalization is one of preservation kinds with adapting old building that is impractical to serve new use and inthe same time, to prevent the original characteristics. Revitalization can be done without or with changingbuilding formation. Sometimes, it really cannot be avoided if it is viewed from benefit expense analysis, it doesnot bring benefit to be preserved, so that, let the building faÃ§ade be prevented, thus, the observer can imaginecity face in the past time.Revitalization effort of old city is not merely effort to preserve building, but also effort that has broughteconomic life in the less developed area. Preservation effort at the moment is holistic effort that aims to givebetter society life quality based on old resource power and to do life injection that is interesting and creative andsustainable, with involving society by calculating economy value. Management is instrument to achieve aimincluding society total involvement that is people centered management-oriented.Revitalization of Chinatown of Semarang area shall be read as an effort to bring back Chinatown area that hasethnic specification. Revitalization effort also has aim to bring Chinatown area life as well as to be tourismdestination as it has been implemented in several other countries, like Singapore, Australia, Malaysia andseveral others.One effort to fulfill revitalization of Chinatown area of Semarang is to give activity stimuli that is hoped to beable to be touristâ€™s interest. That interest is â€œPasar Semawisâ€that is night fair in Chinatown area of Semarang.â€œPasar Semawisâ€ is only a part of revitalization. In the other word, if the revitalization is the aim, thus, â€œPasarSemawisâ€ is one instrumen used to fulfill it.

MODIFIKASI KARBON AKTIF SEBAGAI ADSORBEN UNTUK PEMURNIAN BIOGAS Susanto, Heru; Wijaya, Wishnu; Widiasa, I Nyoman
TEKNIK Volume 34, Nomor 1, Tahun 2013
Publisher : Diponegoro University

The use of biogas as an environmentally friendly fuel is limited by the presence of CO2 and water vapor asimpurities. Therefore, biogas purification for CO2 and water vapor removal is very important step during biogasapplication. This paper presents a process for biogas purification by means of adsorption using either modifiedor unmodified activated carbon as an adsorbent. The modification was performed by passing a pure ammoniagas into activated carbon in a quartz reactor. The results showed that the adsorption process using modifiedactivated carbon decreases CO2 content in biogas up to 67.5% whereas for unmodified activated carbon was of43%. Further, the modification increased CO2 adsorption capacity from ~28 to ~38 mg CO2/g adsorbent. Theincrease in feed temperature decreases CO2 adsorption capacity.

Analisa Perubahan Volume Sedimentasi Waduk Pangsar Soedirman Menggunakan Karakteristik Curah Hujan Berbasis Universal Soil Loss Equation (USLE) Marhendi, Teguh -
TEKNIK Vol 39, No. 2 (2018): Desember 2018
Publisher : Diponegoro University

This research aims to analyse the reservoir sedimentation volume changing of Pangsar Soedirman Dam at Banjarnegara regency through rain erosivity and erosion analysis using universal soil loss equation (USLE) method. The catchment area of Pangsar Soedirman Dam reservoir has rainfall ranging from 1,500 - 5,500 mm/year. In 1989 and 1993, rainfall which has ranging from 3,000 - 5,500 mm/year did not make any increase of reservoir sedimentation volume. In contrast, with rainfall 1,500 mm/year in 1998, the reservoir sedimentation volume reached 6 million m3. Similarly, with rainfall 5,500 mm/year in 1999, the reservoir sedimentation volume decreased from 6 million m3 to about 4 million m3. These results show that the characteristics of rainfall in the catchment area do not always contribute to the increase of sedimentation volume in the reservoir but can also be influenced by other determinants other than rain

ANALISIS POTENSI PENERAPAN KERJASAMA PEMERINTAH SWASTA (KPS) DALAM PENGEMBANGAN INFRASTRUKTUR TRANSPORTASI DI PERKOTAAN (Studi Kasus Kota Semarang) Setianto Kurniawan, Eri; Pudjianto, Bambang; Wicaksono, Y.I.
TEKNIK Volume 30, Nomor 3, Tahun 2009
Publisher : Diponegoro University

The role of Local Government (Province and District / City) become very important in creating atransportation infrastructure that can support a regional transportation activities and implementing thePublic Private Partnership (PPP) model as an alternative financing strategies other than APBN / APBD.The purpose and goal of this research is to conduct a comprehensive study in order to obtain a picture of thepotential level of urban transport infrastructure development (case study of Semarang City) who performedwith the Public Private Partnership (PPP) model, viewed from the perspective of related stakesholder.Research methodology using descriptive statistical approach and SWOT analysis with the matrix space model.The research concluded that the potential application of PPP policies in the development of transportationinfrastructure in the city of Semarang is located at the conservative level, which means that although there area number of external strategic factors which potentially threat to the implementation of the PPP policies,there is still a commissioner of the strength of internal factors that can be optimized.

KOSMOLOGI RUANG ADAT SEBAGAI IDENTITAS PEMUKIMAN KAMPUNG NAGA, TASIKMALAYA - JAWA BARAT Khairunnisa, Meta
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: Traditional Cosmologycal Space as Kampung Naga Setlement Identity, Tasikmalaya - Jawa Barat] Located far from the city, an architectural masterpiece grows and developes in traditional settlement. The form and settlement identity merges with emotionalâ€™s people inside that not only creates an identity but also influences in the development of surrounding area . local wisdom is created from local identity and cultural that becomes soul and character of the settlement (Haryanto,2007:89). Place is created by experience memories in the past that makes the familiar space and indepth meaning (Tuan,2010:73). Kampung Naga is one of the Sundanesse traditional settlement in West Java that maintains the culture and local wisdom, nevertheless globalisation begin to influences the meaning of cultural space inside. Its has a cosmology cocept, proper behaviour and religion that is created naturally and transmitted orally from generation to generation.The research is to understand cultural themes in Kampung Naga as an identity of Nagaâ€™s people. Etnography metodology is used to describe the space indepth and connectivity of the meaning. Cultural spaces that is created from cosmologycal persception and traditional low are Pamali space, Sacred Space and Gender space, the elements of space inside give indepth meaning and create local identity of Sundanese people.

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