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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 9 Documents

Search results for , issue "Vol 35, No 1 (2014): (July 2014)" : 9 Documents clear

ANALISIS PERILAKU PENGGUNA ANGKUTAN UMUM TRANSPORTASI ANTARMODA Wicaksono, Y. I.; Siswanto, Joko
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title:Â Analysis of User Behaviour for Public Transport Special for Intermodes Transportation]In traveling, each rider will choose the route that gives the minimum fare. The journey can be expressed in terms of monetary cost, travel time, distance, safety, comfort, and cost is not borne by the traveler (social cost). Attributes are specific to each road segment (link), so it canâ€™t be aggregated for a more long. Attribute segment in transport modeling approach behavior (behavioral), including 2 primary system, the system of activity attributes and attribute the traveler service systems. Pretty much the traveler who wants to use mass transit intermodal transportation. This research was conducted in the city of Semarang Metropolitan Indonesia: identify the purpose and perception of public transport user behavior on the network and create a model for inter-user behavior on public transport intermodal network. The combined value of the coeffient of determination of the overall model is 0.931. This means that the model is able to explain 93.1% inter-user behaviour. Behavioural characteristic of users of public transport in the intermodal network in the form of the number of activities that a lot, have enough users mature age, education level is high enough, is not associated with gender, the limitations of private vehicle ownwership. Perception of public transport user behaviior on the network inter-linked with the comfort, safety, convenience, capacity, quality and quantity of good network, resonable travel expenses, as well as interdiciplinary operator.

OPTIMASI VARIABEL YANG PALING BERPENGARUH PADA PEMBUATAN BIODIESEL DARI MINYAK BIJI RANDU DENGAN PROSES TRANSESTERIFIKASI Sofyan, Mudzofar; Tanjung, Ilham; Santosa, Herry
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: Biodiesel Production from Kapok Seed Oil with KOH Catalyst Using Two Steps Transesterification Process] Biodiesel is one of diesel fuel alternative made from renewable resources such as vegetable oils and animal fats. One of the natural ingredients that can be used as a material in the production of biodiesel is kapok seed. The existence of relatively abundant raw materials is a great opportunity to be developed into alternative energy options which developed on a commercial scale. Biodiesel from kapok seed oil can be made through a two-stage transesterification reaction which helped by using a base catalyst. This research aims to characterize the kapok seed oil, determine the most influential variables between temperature, the ratio of methanol-oil, and time against yield by the factorial design method, optimization variables that most influence on yield, and characterize the biodiesel. Two-stage transesterification process using KOH as the catalyst with changing variables: temperature, methanol-oil ratio, and time. The result showed that kapok seed oil has FFA content: 17.97% and a saponification number: 172.55 mgKOH/g. Most influential variable is the variable of time. At the variable optimization of time, the result were optimally obtained at the 105th minutes with yield: 77.39%. The characterization results of biodieselâ€™s product show from seven parameters of testing, four parameters are required in accordance with SNI.

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.

PENGARUH VARIABEL OPERASI PADA PROSES MODIFIKASI PATI GARUT DENGAN METODE CROSS LINKING PENGGANTI TEPUNG TERIGU SEBAGAI BAHAN BAKU PADA INDUSTRI BAKERY Rakhmawati, Putri; Octaviani, Risa Dwi; Santosa, Herry
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: Operating Variables Effects on Process Modification of Arrowroot Startch by Cross Linking Method for Substituting Wheat Flour as Bakery Industry Raw Material] Arrowroot starch is local food comodity that has potential for many use.The advantage of arrowroot starch are free gluten and low glisemic index. But, arrowroot starch has disadvantage swelling power and solubility doesnâ€™t criteria. In this study, an attempt is made to change the arrowroot starch raw material for bakery industry by using cross-linking methods. The purpose of this research is to study the effect of reaction temperature, reaction time, and volume gingerol of swelling power and solubility. To achieve the goal of research through three stages: (1) The characteristic of arrowroot, (2) The phase of modified arrowroot starch with method Cross Linking is done to change the properties of arrowroot starch in accordance with the specification qualify as bakery industry raw materials, (3) Analysis phase to modified arrowroot starch products which include swelling power and solubility. To achieve swelling power and solubility for raw material bakery industry, cross linking process to Arrowroot strach better are reaction temperature at 400C, reaction time at 90 minutes and oleoresin volum at 0,3 ml.Â

Ucapan Terima Kasih kepada Mitra Bebestari (Reviewer) Istadi, Istadi
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

PERUBAHAN FASADE RUMAH DI PERUMAHAN WONINGPARK GERGAJI SEMARANG Arif, Burhan
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: A Change of The Facade of a House in Recidential Woningpark Gergadji Semarang] Indis architecture is an assimilation or a mixture of elements of Western culture especially the Dutch with Indonesian culture, especially from Java. Woningpark Gergadji (Park Housing Gergadji or NIS - Park) is a residential complex that is occupied by employees and their families who work in the NIS / Nederlands Indische Spoorweg Maatschapij (now PT . KAI DAOP IV) since the Dutch colonial era. The houses in the housing preserved and maintained . But now every home no longer has the same view of the facade as the first appearance of the facade of the colonial period look even additional buildings that resemble a home between homes - the original home. This thesis discusses a changes the facade of the main house at Recidential Woningpark Gergadji performed by residents since occupied. If there is a change of the facade that does not follow the rules that match the architecture of the building, it will make the facades of the building will lose its identity. A growing phenomenon in that houses, there is a change in the facade of the main building and the new building increased in the land. Therefore, the PT. KAI DAOP IV and residents today must work well together so that the houses retaining the architectural identity. Â

PENYUSUNAN SKENARIO KEBIJAKAN UNTUK PENGEMBANGAN BRT TRANS SEMARANG DENGAN PENDEKATAN SISTEM DINAMIK Susanty, Aries; Nugroho, Susatyo; Khantari, Kumala Ade
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Preparation for Policy Scenarios for Developing the Bus Rapid Transit (BRT) Trans Semarang with Dynamic System Approach] Related to the complexity of the problem faced by Bus Rapid Transit (BRT) Trans Semarang, this research attempts to develop a framework for dynamic development of BRT Trans Semarang and provide a platform to support policy making related to performance improvement of BRT Trans Semarang. This research use system dynamics (SD) methodology. There are three scenarios constructed in this research and then a system dynamics model built based on them for the next five years. The first scenario is providing some feeder that will take the passenger on the bus, the second scenario is providing some new bus, and the third scenario is a combination of providing a number of feeders and also some new bus. There are three criteria which are used to evaluate the result of each scenario, i. e the achievement of the target of load factor (greater than 70%), the amount of total subsidy for operational of BRT, and percentage of the number of people that change their moda of transportation, from using private vehicles to BRT. The result of simulation with system dynamic indicated that scenario 1 is better than the existing condition; scenario 1 also better than scenario 2 or scenario 3. By providing some feeder, operational BRT can achieve the target of load factor at month 15, the government also does not need to issue subsidies for operational of BRT Trans Semarang, as well as the percentage of the number of people who moved from using private vehicles reached 26%.

KAJIAN REPARASI PENGECATAN PADA LAMBUNG KAPAL (STUDI KASUS KM. KIRANA 3) Ariany, Zulfaidah
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: Study on Painting Repair of Hull Ship (Case Study of KM. Kirana 3)] Regular and scheduled maintenance are important things to make sure any ships could work and sail properly. So the main purpose to carry peoples or deliver the goods can be run smoothly. Painting is one of that items. It can protect the body or their parts from rust attack, in common word, corrosion. Estimating the paints consumption upon maintenances are very useful for ship owners, project owners neither shipyards. Upon ship KM. Kiranaâ€™s hull reparation, an analysis process can calculate the estimation of her paints consumption: For hull paint reparation of KM Kirana 3, it needed estimated 8 cane (20 liter) for bottom painting, 13 canes for bottom top, 42 canes for topside and 6 canes for weather and upper deck.

SIFAT MEKANIK DAN MORFOLOGI PLASTIK BIODEGRADABLE DARI LIMBAH TEPUNG NASI AKING DAN TEPUNG TAPIOKA MENGGUNAKAN PEMLASTIK GLISEROL Kumoro, Andri Cahyo; Purbasari, Aprilina
TEKNIK Vol 35, No 1 (2014): (July 2014)
Publisher : Diponegoro University

[Title: Mechanical Properties and Morfology of Biodegradable Plastic from Steamed Rice Waste and Cassava Flour with Glycerol as Plasticizer] The annual consumption of plastic packaging has increased significantly as a response to the increase of peopleâ€™s need and buying power. As a packaging material, plastic is light, flexible, practical and inexpensive. Unfortunately, if the plastic is not biodegradable and dumped irresponsibly to the ecosystem may cause serious environmental problems. The objective of this research was to study the effect of glycerol on the characteristic of biodegradable plastic from steamed rice waste and cassava flours composites. The biodegradable plastic was manufactured by casting the warm solution of flours composite with addition of glycerol as plasticizer. The results showed that biodegradable plastic obtained from steamed rice waste and cassava flours composites has limited mechanical stress, but remains flexible in nature. Good quality biodegradable plastic was obtained when 15% weight of glycerol in addition to 30:70 ratio of steamed rice waste flour to cassava flour with tensile strength 20.65 MPa, elongation at break 4.7% and Young Modulus 1138 MPa. The biodegradable plastic exhibits discontinue microstructure, rough and porous. Fourier transform infrared analysis proved the existence of OH, CH2, amide III and amida I groups in the biodegradable plastic.Â

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