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IPTEK Journal of Proceedings Series

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Published by Institut Teknologi Sepuluh Nopember Surabaya

ISSN : 23546026 EISSN : - DOI : -

Core Subject : Science,

Computer Science & IT

IPTEK Journal of Proceedings Series publishes is a journal that contains research work presented in conferences organized by Institut Teknologi Sepuluh Nopember. ISSN: 2354-6026. The First publication in 2013 year from all of full paper in International Conference on Aplied Technology, Science, and Art (APTECS). It publish one time a year after the held of APTECS event.

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Articles 1,079 Documents

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Assignment integration in order to achieve the successful studio-based education (An Idea Implementation of Integrated Architecture Experiential Learning) Yaseri D. Apritasari; Doni Fireza
IPTEK Journal of Proceedings Series No 3 (2017): 8th International Conference on Architecture Research and Design 2016
Publisher : Institut Teknologi Sepuluh Nopember

The formal architecture undergraduate degree (S1) is determined by taking total 144 credits, in 8 semesters (4 years). After he/she graduated and earn the B.Arch, to become a professional architect one must take 1-2 year’s professional diploma including internship in one architectural bureau. All this limitations may cause several strategies such as a curriculum adjustment in order to meet all the teaching materials needed. Those strategies includes; eliminating some subjects that considered not necessary, decreasing the teaching materials content in order to create lesser credits so more subjects may be added into the curriculum, or merging some subjects into a new subject and adding more credits into it. This condition affecting the learning objective of the new subject cannot be achieved optimally. Seeing this tendency, an idea has emerged by integrating some of the subjects’ assignments into one comprehensive assignment. This concept is derived into scenarios that a student will undergo a one big assignment containing materials from several subjects, and the scoring phase will be examined from several subjects’ point of views. This paper will discuss the effectiveness of architecture subject assignment integration, in this case the architecture design studio as the core of architecture education with other supporting subjects including the theoretical subjects, to achieve architecture education’s target and objective. Methodology of research used is qualitative research through observation methods: (1) Condition of the studio assignments with other supporting subjects (theory and skill) assignments that can be integrated, (2) Strategy to achieve the learning objective target through the integration of the studio assignments with other subjects' assignments, (3), Advantage and disadvantage of the assignments’ integration scenario. Hopefully the result of the integration of the studio assignments with other subject's assignments can achieve the successful architecture education, effective, target fulfilled, and optimized

Strength of Timbers: A Case Study in Cambodia Chhouk ChhayHorng
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

This study investigates the strength properties of timbers which are mostly used in the construction field in Cambodia. About 46 species of timbers selected from 4 categories of woods are tested in the laboratory of Institute of Technology of Cambodia. The tests are done to measure the compressive strength parallel to the grain, compressive strength perpendicular to the grain, tensile strength perpendicular to the grain, bending strength and shear strength of each species of timbers. At the meantime, the unit weight, density, humidity and moisture contents of timbers are also measured. The results from the experiments are found that the unit weight of lumbers is very different from one species to another. It could be observed that as the density increases, the various strength properties also increase. Some timbers resist very well under the ground like PHCHEK (Shorea Obtusa), some others resist better in water than others, for example KOKI (Hopea Odorata). The outcome of the study could help students, researchers, construction companies and architects to design and construct wood construction projects more economically, safely and appropriately. The results of this study can be additionally useful for future research and shared with other researchers in different institutions within the region.

Study of Simulation and Experimental Effect of Vaccum Degrees Between Glass Containers and Absorber on Solar Water Heater with Absorber Sinusoidal Type Royyan Firdaus; Djatmiko Ichsani; Mohamad Hakam; A’rasy Fahruddin
IPTEK Journal of Proceedings Series No 1 (2019): 4th International Seminar on Science and Technology 2018 (ISST 2018)
Publisher : Institut Teknologi Sepuluh Nopember

In this era, the energy crisis is the spotlight, as many of us rely heavily on non-renewable energy such as fuel oil and natural gas, so that if the fuel source runs out, then all life processes will also stop. Not only that, the pollution caused by the use of fuel oil is very bad for the environment. Therefore, there is need for savings in all aspects of life that require energy. One of them is solar energy. In this research we are researching how to analyze and make solar water heater experiments effective and efficient so that can be widely used by many people. Solar water heater is very varied in terms of methods used to take the sun's heat. It all depends on the design and analysis made. In this case the wide absorption of solar thermal energy absorbed by the absorber is also very important, for that we use sinusoidal-shaped absorber plate. Furthermore, through the journals that ever existed, the researchers took 2 important aspects that need to be in the study that is with the variation of vacuum and discharge rates with the thickness of the sinusoidal (δ) 2 mm absorber plate. For the vacuum level will be varied 0 mm.Hg, -20 mm.Hg, -40 mm.Hg, -60 mm.Hg, -80 mm.Hg, -100 mm.Hg, -120 mm.Hg and by varying the fluid flow of work by adjusting the valve opening, that is from 18 L/hour to 22 L/hour with increase of 2 L/hour. By varying the level of vacuum between the absorber plate and the cover glass, it is expected to minimize the loss coefficient, increase the temperature of the absorber, and the temperature of the cover glass down. So it can improve collector efficiency 63.29%. and usefull Heat 760.39 Watt/m2, when the solar collector is set at a discharge of 22 L/hour, vacuum level -120 mmHg

A system design for cocoa beans transportation of premium products T D M Sari; Y Arkeman; Muslich Muslich; D Taufik
IPTEK Journal of Proceedings Series No 3 (2018): International Conference on Industrial and System Engineering (IConISE) 2017
Publisher : Institut Teknologi Sepuluh Nopember

Premium chocolate product such as praline, chocolate bars, confectionery, and chocolate drink need a premium quality of cocoa beans. Scarcity of sources and less quality in the existing cocoa beans supply chain affecting a sustainable production and increase operational cost. Improvement in cocoa supply chain which is consisting of farmers-farmers group- transporter/logistic provider- agro industry will provide cocoa beans availability and optimum operational cost of premium product-agro industry. Transportation sector which support supply chain has an important role for ensuring the distribution of cocoa beans delivery in time. The source availability and transportation mode are the requirements that analyzed in Business Process Modelling (BPMN) to minimize transportation cost and maximize quantity of cocoa bean demand. The formulation of those will be optimized by Goal Programming. The results is deviation of transportation cost 2,083 rupiahs per kilogram when supply meets the agro industry demand and there is no deviation of transportation unit when using six unit of truck. It’s reveal that the availability of cocoa bean to meet agro industry demand will give cost efficiency.

Photochemistry in CuInS2 Quantum Dots/Polyoxometalate System Azzah Dyah Pramata; Tetsuya Kida
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Energy transfer involving semiconductor quantum dots (QDs) has received increased attention in recent years because of high photostability and size-tunable optical properties. Here, we study photochemistry in quantum dot/polyoxometalate (POMs) systems and utilize quantum dots as light antenna that captures visible light to sensitize wide band gap POMs. We also demonstrate the photoenergy storage properties of CuInS2 QD/POM systems. The PL quenching and the decrease in PL lifetime are clear indication that the excited electron of CuInS2 was deactivated by electron transfer to POM such as PMo12O40, W10O32 and SiW10O36 that were hybridized with a cationic surfactant and dispersed together in an organic solvent. The quantum yields of CuInS2 QDs were 2.32% with 3.9 nm in particle size. Irradiating QD/POM systems with visible light generates a one-electron reduced form of POMs, suggesting the reduction of POMs. Photoenergy can be stored as reduced POM under deaerated conditions by visible light. Stored electron in POM can be discharged afterwards via reductive reactions such as oxygen under the dark.

Recovery of Natural Folic Acid and It’s Identification as Protein Isolate Through Beans Extraction Fermented by Rhizopus sp. and Rhizopus oligosporus C1 for Smart Food Formula Agustine Susilowati; Aspiyanto Aspiyanto; Puspa D. Lotulung; Hakiki Melanie; Yati M
IPTEK Journal of Proceedings Series No 4 (2017): 2nd International Seminar on Chemistry 2016
Publisher : Institut Teknologi Sepuluh Nopember

Protein isolate produced through fermentation of soy beans (Glycine soja L.), mung beans (Phaseolus radiatus L.) and kidney beans (Phaseolus vulgaris L.) using fungi of Rhizopus sp. (mixture) or Rhizopus oligosporus C1 (single) are natural source of folic acid for formulation of smart foods. The objective of this experimental activity was to know potential use of fermented beans (tempeh) as protein isolate as a result of pulverizing process and filtration through 100 mesh sieve and characteristic of its monomer, particularly glutamic acid as a part of folic acid via LC-MS. Protein isolate extract was generated via pulverizing mixture between soy tempeh, mung bean tempeh and kidney bean tempeh, and water with ratio of 1 : 1, 1 : 2, 1 : 3, 1 : 4 and 1 : 5, respectively followed by filtration through 100 mesh sieve. The result of experimental activity displayed that interaction of all treatments affected on composition of tempeh extraction result as protein isolate. Identification using LC-MS showed that difference in relative intensity for 3 kinds of tempeh on presence of glutamic acid. Protein isolates from soy tempeh, mung bean tempeh and kidney bean tempeh produced domination of glutamic acid monomer indicated subsequently at chromatogram with T 4.1, T 5.7 and T 7.1; T 4.0 and T 3.9.

Risk Management Effectiveness of Oil And Gas Pipeline Construction in Java Island - Indonesia I Putu Artama Wiguna; Nadjadji Anwar; Amien Widodo; Nova Nevila Rodhi
IPTEK Journal of Proceedings Series No 6 (2017): The 3rd International Conference on Civil Engineering Research (ICCER) 2017
Publisher : Institut Teknologi Sepuluh Nopember

One of the important oil and gas industry is oil and gas pipeline which serves to support the gas transmission and distribution process. The oil and gas pipeline routes are so long and cross through some areas that certainly raises the risk of adversely affecting the environment, especially for the pipeline located in a densely populated area, where at certain conditions, the pipe can leak and may cause the explosion. Many researches have been conducted concerning on the project pipeline risks which concluded that the oil and gas pipeline project has very complex risks. In addition, the oil and gas project may cause a potential disaster. Currently oil and gas companies have been implementing risk management to minimize the negative impacts, but the negative impacts are still occurred. This is due to ineffective risk management implementation. This study aims to analyze the effectiveness of risk management system for oil and gas pipeline project in Java Island. Based on a deep study literature review, it shows that the effectiveness of risk management can be achieved by taking account into environmental, social and economic factors that are the pillars of sustainable development system. The potential disaster was also to be considered as an addition factor. Therefore, four identified factors were analyzed using Analytical Hierarchy Process (AHP) method. Data were obtained using questionnaire which were distributed to oil and gas project team. It is found that the most factors to be considered was social aspect (40%) and the other factors contributed 31% for disaster, 15% for economic, 14% for environment. Those factors should be taken account in the design stage as the most priority.

Sponsor ISST 2015
IPTEK Journal of Proceedings Series No 1 (2015): 1st International Seminar on Science and Technology (ISST) 2015
Publisher : Institut Teknologi Sepuluh Nopember

Sponsor

Sub Bottom Profiler Data Analysis to Identify the Thickness of Sediments (Study Case: Alur Pelayaran Timur Surabaya) M. Dwiki Amirullah; Khomsin Khomsin; Danar Guruh Pratomo
IPTEK Journal of Proceedings Series No 2 (2019): The 3rd Geomatics International Conference (GEOICON) 2018
Publisher : Institut Teknologi Sepuluh Nopember

One of the acoustic instruments were used for the measurement of the seabed is the Sub Bottom Profiler. This instrument uses a low-frequency acoustic signal which has the ability to penetrate the layers of the ocean bottom up to a depth of several meters. The purpose of the survey using the Sub Bottom Profiler that is to conduct the investigation and identification of coating the ocean floor so that the retrieved information related to seabed stratigraphy. The location of research are on Alur Pelayaran Timur Surabaya. Secondary data is Raw data Sub bottom profiler, RAW data of single beam, SVP and tide data has been processed. The data retrieved from the District Navigasi kelas 1 Surabaya. The location of the research is classified as waters of the shallow waters. There are three layers of sediment. The pattern of seismic reflection data are parallel and subparallel. Thickness between the base of the sea surface with the first layer has a constituent sediments form the sandy mud. Thickness of the layer of sediment volume values the greatest there is between the first and second layers of 8.009.815.18 m³. The total volume of the thickness of the layer sediment 17,945,928.40 m³.

Bending and Torsional Characteristics of Carbon Fiber and Balsa Wood Sandwich Composite Astasari Astasari; Sutikno Sutikno; Wahyu Wijanarko
IPTEK Journal of Proceedings Series No 2 (2017): The 2nd Internasional Seminar on Science and Technology (ISST) 2016
Publisher : Institut Teknologi Sepuluh Nopember

Bending properties and torsional stiffness of carbon fiber woven and balsa wood sandwich composites are studied and presented in this paper. Three point bending and torsional responses are tested with finite element’s software. The finite element method was employed to determine applied load, total deformation, and equivalent stress of sandwich beam with different number of carbon fiber woven layer and orientation. In this study, variations of adjustment layers with 3 types of fiber orientation (0o, 45o, 60o). The result indicated that adding more carbon fiber layer could improve mechanical properties for sandwich beam.

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