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Proceeding ISETH (International Summit on Science, Technology, and Humanity)
Published by Universitas Muhammadiyah Surakarta
ISSN : 24773328     EISSN : 28077245     DOI : -
Core Subject : Health, Science, Education, Social, Engineering,
Computer Science & IT Engineering Medicine & Pharmacology Social Sciences Other
The International Summit on Science, Technology and Humanity (ISETH) is organised by Universitas Muhammadiyah Surakarta. This summit aims to provide a platform for researchers and academics to share their research findings with others and meet lecturers and researchers from other institutions and to strengthen the collaboration and networking amongst the participants.
Arjuna Subject : Umum - Umum
Articles 54 Documents
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Search results for , issue "2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)" : 54 Documents clear
Analysis of Indonesia’s Automotive Component Export by Country of Destination Using Multivariate Analysis Dedy Sugiarto; Triwulandari S. Dewayana; Dorina Hetharia; Tiena Gustina Amran
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Abstract

The aim of this paper was to present an overview of Indonesia’s automotive component export by the country of destination. The data were taken from the Statistics Indonesia (Badan Pusat Statistik/BPS) of 2014, particularly the code of HS8708. Descriptive statistics, cluster analysis and principal component analysis were used in the analysis. The results showed that histogram of total export value indicated that the curve was skewed to the right which means there were some extreme values on the right. The largest export value, subsequently, came from Thailand, Japan, and Malaysia. Based on dendogram of the cluster analysis, there were five clusters of country of destination. Meanwhile the countries of destination include Thailand, Japan, Malaysia, Brazil, Mexico, and others. Biplot principal component analysis identified the diverse characteristics of export destination countries among clusters. Gear boxes, clutches, and chasis frames were mostly demanded by Thailand; most of road wheels and part of radiators were exported to Japan; numbers of fuel tanks were sent to Malaysia; drive axles were mostly exported to the cluster of China, United Kingdom, and Philippines; while high demand of radiator spare-parts were obtained from United States.
Classification of Meandering Rivers: Interpreting the Morphological River by Using the Planimetric Characteristics Yuri Sukamto; Robby Yussac Tallar; William Trisina
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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It must be recognized that rivers differ among themselves, and through time,one river can vary significantly in itsdownstream direction. Most of the riversclassification was published by US or European researchers. In fact, these classifications of the river cannot be applied thoroughly to other regions such Asian Countries due to its differentcharacteristics and situations. Therefore, the general purpose of thisresearch is to establish a simple and easy-touse practice in interpreting the morphological aspect of river by using planimetric characteristics. We selected four major rivers to develop the conceptual model for classification of meandering rivers in Borneo (Kalimantan) Island. Further, we divided themeandering rivers in Borneo Island by three zones to get the informed data in detail. Based on the results, the variability variesin all planimetric characteristics except the slope, which is considered as conformity.
Cost Analysis of the Fukuoka Method Landfill System in North Kolaka Regency, Southeast Sulawesi, Indonesia Irwan Ridwan Rahim; Abdulrahman Jamaluddin
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Most waste disposal sites in developing country are still using open dumping and open burning. However, in developing countries, there are a lot of economic and technical problems with high level landfill technologies of first world countries, which makeimplementation of improvement is not feasible. Therefore, there is a significant need for transfer of landfill technology that is considered simpler, low cost, and that can be maintained locally. A method that provides these standards, which has recently gathered attention is the Fukuoka Method (semi-aerobic landfill).By life cycle cost analysis method, with the lifespan of the landfill is 20 years and an estimated volume of586,789 m3 (469,431tons), the required capital investment was about US$296,739 (natural clay liner)and US$463,406 (syntheticliner) or about US$0.63 and US$0.99/ton of waste. It is also calculated thatthe total cost of operation was about US$3,187,728 or US$6.79/ton of waste. The closure cost of the landfill was estimated to beUS$278,116 or US$0.59/ton of waste.
Two-Dimensional Rubble-Mound Breakwater Model Using Tetrapod at Armor Layer and Geotube at Core Layer Olga Pattipawaej; Hanny Dani; I. Putu Samskerta
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Waves and currents can remove sand from the coastal areas that caused beach erosion. Beach erosion needs to be handled by building breakwater. Rubble mound breakwater is chosen to dissipate the wave energy. Rubble mound structures are widely used throughout the world; so naturally, stability tests of rubble mound structures are the most frequently conducted coastal structure model. Two-dimensional rubble mound structure physical model is carried out in a flume. The armor layer facing the seaward uses tetrapods that are placed randomly and the core layer is set to be stable by using geotube. Three different slopes of rubble mound model facing the seaward is applied, i.e., 1:1.5, 1:2, and 1:2.5, respectively. There are also four different water levels used, i.e., 38 cm, 54 cm, 63 cm, and 70 cm. The measured parameters of this study are the wave height and wave period in front of and behind the breakwater structure. The analysis that can be done is the wave absorber and transmission waves. The stability of the structure can be observed in the form of displacement armor testing on the breakwater and at toe for a wide variety of slope and water level variations.
Analysis of Combustion Temperature in the Chopped Wood Gasification Process with Air Velocity Variation W Wijianto; S Subroto; S Sarjito
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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The general definition of gasification is thermo-chemical process of solid fuel form which becomes gas fuel with limited supply of O2 and it produces CH4, H2, CO, and impurity compound such as H2S, CO2, and tar. The objective of this research was to determine the influence of air velocity toward combustion temperature in order to invent the best values of air velocity for chopped wood gasification process.The research was commenced by preparing chopped wood as material for downdrft gasififier. Subsequently, glasswool was utilized as gasifier isolator in the gasification process to isolate heat in order to obtain the best heat efficiency. In the gasification processes, variaton of air speed was applied. The sample was chopped wood with gasification furnace in which the results of combustion temperature and combustion time were analyzed.The result indicated that the highest temperature was not depends on the fastest air flow velocity. Instead, it required a precise air flow velocity to gain the highest temperature. It was evidenced that the highest temperature gained was at 6200 C with v = 5.6 m/s air flow velocity. The longest gasification process was 13 minutes at v = 7.6 m/s and the fastestgasification process was 11 minutes at v = 5.6 m/s.
Model Analysis and Laboratory Experiments of Strengthening Diagonal Wall Panels in Concrete Structures Yenny Nurchasanah; Muhammad Ujianto
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Walls, even though being included in non-engineering building element, actually have the strength and stiffness. In this study, the wall elements will be analyzed regarding the influence in a system of reinforced concrete frame. The other side of this research is the adoption of high-rising building technology in the use of shear wall elements into earthquake-safe homes.This technology is to prevent the wall from quick collapse when exposed to seismic forces are by strengthening the areas diagonally. Diagonal area is an area where there will be the greatest shear force effects, and it is characterized by the appearance of cracks or even splitting on the diagonal area. The modeling of reinforced concrete structures is applied to SAP2000 to open frame and frame with concrete panels as filler. This is modeled as bracing representing an area of wall. There are 37 test objects of open frame and frame with wall concrete panels as filler (100x50x7), with diagonal reinforcement/bracing of the group of steel reinforcing. SAP2000 analysis results indicate that the structure with wall panels have a higher value than the capacity of open frame structure. Laboratory experimental data with compression test showed increased values up to 215.36% on the frame with wall panel, an increase of 271.99% on the frame wall panels with diagonal steel reinforcement. Flexural test showed increased values up to 37.73% on the frame with wall panel and an increase of 260.76% on the frame wall panels with diagonal steel reinforcement. The addition of diagonal reinforcement elements is conducted to divide the force received by the wall and to increase the strength of the wall and the stiffness of the structural system.
Comparison Study of Beryllium and Lithium Target System for Beam Shaping Assembly Used in Boron Neutron Capture Therapy David Harendza; Suryasatriya Trihandaru; Slamet Santosa; Yohanes Sardjono
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Boron neutron capture therapy (BNCT) is a selective targeting cancer therapy method which is by radiating epithermal neutron beams to a tumor which has been injected by boron-10 compound. The implementation of this method requires 2 (two) key elements, namely the boron-10 compound and the irradiating neutron beam of epithermal energy level. The neutron source used in this research was 13 MeV 1mA cyclotrons which have been developed by Indonesia National Nuclear Energy Agency. This paper was preoccupied in beam shaping assembly (BSA) target system. BSA target system is used to convert the proton produced by cyclotron into neutron. IAEA generated a recommendation for BNCT neutron beam quality, one of them was epithermal neutron flux which is higher than 109
Potential Vegetation for Soil and Water Conservation: Case Study in Samin Watershed, Central Java M Maridi; Putri Agustina; Alanindra Saputra
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Samin is one of watersheds located in the districts of Karanganyar and Sukoharjo, Central Java, Indonesia. Samin is a part of Bengawan Solo watershed that is classified into one of 282 Indonesian watersheds which are in critical condition. Research about vegetation analysis of Samin watershed as conservation efforts have been done before and resulted in structure of lower crop community (LCC) and tree vegetation. The purpose of this study was to analyze potential plants, both LCC and trees, in Samin watershed that could be developed as a vegetative water and soil conservation. The list of plants that were potentially developed as a vegetative conservation obtained from the research before about analysis structure and composition of vegetation in Samin watershed and literature review. The result of this research showed that there were several plants with the highest Important Value Index (IVI) and that can be developed for vegetative soil and water conservation. In tree vegetation, there are Tectona grandis, Delonix regia, Switenia mahagoni, Cassia siamea, and Samanea saman. These tree plants have a big canopy that can retain rain water through several mechanismssuch as interception, reducing direct flow, and producing litter layer. In LCC vegetation, there were Mimosa pudica, Ageratum conyzoides, Tridax procumbens, Oplismenus burmanii, Chloris barbata, and Axonopus compressus. Grass vegetation could withstand runoff and increase infiltration.
White Rot Fungus (Marasmius sp.) Delignification on Sugarcane Bagasse for Bioethanol Production Cici Darsih; Satriyo Krido Wahono; Vita Taufika Rosyida; M. Kismurtono
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Sugarcane bagasse is one of the potential lignocellulose materials for alternative energy especially on the development of bioethanol, the second generation technology. This paper investigates the delignification of sugarcane bagasse by the white rot fungus (Marasmius sp.). Sugarcane bagasse was delignified by fungus; then hydrolyzed by xylane enzyme and fermented by Saccharomyces cerevisiae through simultaneous processes of saccharification and fermentation (SSF). Pretreatment of the sugarcane bagasse was conducted by fungus with various time periods of incubations for 15, 30, and 45 days. SSF of pretreated sugarcane bagasse was conducted for 3, 6, 9, 12, and 15 days. Lignin, cellulose, and hemicellulose were determined by Chesson method. Bagasse structure before and after delignification were determined by Fourier Transform Infrared (FTIR) Spectroscopy. The results showed that the best result of bagasse delignification, containing 16.04% of cellulose, 26.61% of hemicellulose, and 51.89% of cellulose, was on 15 days of incubation. The bioethanol was obtained in 3 days of incubation with bioethanol concentration of 0.85% or 0.4 g/L.
Prediction of the Erosion and Sedimentation Rate Using SWAT Model in Keduang Sub-Watershed Wonogiri Regency Prima Nugroho; Yuli Priyana; Sigit Haryadi
Proceeding ISETH (International Summit on Science, Technology, and Humanity) 2015: Proceeding ISETH (International Conference on Science, Technology, and Humanity)
Publisher : Universitas Muhammadiyah Surakarta

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Increased rate of erosion and sedimentation undeniably will bring degradation to the affected area, particularly in the watershed ecosystem. This problem, however, can be reduced by applying a proper watershed management, especially in the upstream. Watershed management would be carried out based on analysis of the watershed performance. A hydrological modelfrequently used to determine the impact of the landuse and physical environmental conditions onthe rate of erosion and sedimentation spatially and temporally is Soil Water Assessment Tool(SWAT), This research aimed: (1) to determine the accuracy of the monthly model simulationand, (2) to analyze the rate of erosion and sedimentation in Keduang sub-watershed. The statistical method used to test the model was Nash-Sutcliffe efficiency (NS) and the coefficient of determination. Result of model validation obtained value of R2 = 0.79 and NS = 0.41. The area with a high erosion rate was as much as 17,950.75 ha (51.22%) and very high erosion rate was 7,771.25 ha (22.17%). Average of sedimentation rate in the outlet of Keduang sub-watershed, which was retrieved from the simulation in 2011-2014, was 408.19 tons/ha/year.

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