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International Nuclear Science, Technology and engineering Conference 2018, iNuSTEC 2018

作者： Mohd Yussuf, Nabiha Embong, Zaidi Mohd Masirin, Mohd Idrus Zainorabidin, Adnan Ahmad Tajudin, Saifulazhar Mohamed Sunar, Norshuhaila Ahmad, Salawati Maxwell, Omeje Emmanuel, Joel Malaysia Pagoh Campus Km 1 Jalan Panchor Muar Johor84600 Malaysia Faculty of Civil and Environment Engineering Universiti Tun Hussein Onn Malaysia Parit Raja Johor Malaysia UTHM Pagoh Campus Km 1 Jalan Panchor Muar Johor84600 Malaysia Centre for Language Study Universiti Tun Hussein Onn Malaysia Malaysia Department of Physics College of Science and Technology Covenant University Ota Ogun State Nigeria

Biochar (a by-product of biomass pyrolysis) is developed as a renewable, low-cost, and promising carbon-based electrode for electrochemical remediation of Cr, Mn and Fe in polluted river water. The biochar - electrode were prepared with two types of tailored sieved size medium (2.0 mm) and fine (150 m). The effect of the different sieved size on the electrochemical reactor was set at 60V of voltage supply, 6 cm inter-electrode distance within 105 minutes electrolysis operational time. The results indicated that the highest removal efficiency for Cr was achieved at 95% after 105 minutes followed by Mn at 99.9% in 65 minutes and Fe at 92.76% in 105 minutes. Interestingly, the electrode with larger sieved size showed the highest removal efficiency for all three elements. These results emphasize the importance of tailoring the porous structure of the biochar electrode material as a function of the specific size of adsorbate ions to improve the electrochemical water treatment performance for polluted river water. © Published under licence by IOP Publishing Ltd.

关键词： Rivers

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Integration of Satellite-Derived Bathymetry and Sounding Data in Providing Continuous and Detailed Bathymetric Information

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IOP Conference Series: Earth and Environmental Science 2020年第1期618卷

作者： Nur Syahirah Hashim Othman Mohd Yusof Wiwin Windupranata Saiful Aman Hj. Sulaiman Centre of Studies for Surveying Science and Geomatics UiTM Shah Alam Malaysia Geodesy and Geomatics Engineering Study Program Faculty of Earth Science and Technology Institute Technology of Bandung Indonesia

A hydrographic survey can be a cumbersome sometimes. The data can be sparse, providing it can be costly, and it took a lot of manpower and time. Space-borne data like multispectral images can be a helpful tool towards hydrographic survey, especially in the shallow water area. The company like EOMAP and TCARTA make use of Satellite-Derived Bathymetry (SDB) as a tool and product. Would it be great if it also can be applied in Malaysia, especially on the low-risk job or survey planning? Enlarging the survey area and providing a continuous and detailed water depth information is the main objective in this research. In order to complement with convenience and cost reduction, the author used Landsat 8 '(free downloadable images)' in this research. Structuring the procedure is the central part of the process involving pre-processing and processing step until the final product obtained. In this research, the author used various kind of bathymetry algorithms such as Single-Band Algorithm (SBA), Green-Band Algorithm (GBA), and Stumpf. Moreover, the author also uses Principal Component Analysis (PCA) tool from ArcMap and Spear Relative Water Depth: Log-Ratio Transform tool from ENVI to derived bathymetry. All of this bathymetry algorithm gives out a different concept with a different statistical approach. The final result then will be compared and evaluated with Single-Beam Echosounder data (ground truth).

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Pavement analysis for road construction on expansive soil at Merauke District

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IOP Conference Series: Earth and Environmental Science 2019年第1期235卷

作者： Nababan D S H Hairulla M Mandiwop Departement of Civil Engineering Faculty of Engineering Musamus University Merauke-Indonesia Bachelor Program of Civil Engineering Faculty of Engineering Musamus University Merauke-Indonesia

Development in Merauke District for the last five years run in various fields such as education, government, health, trade, and housing. This development requires good infrastructure to support related activities. One development activity that becomes the focus of Merauke District government today is the construction of Regional General Hospital which is located at Veteran Street, Nggolar Village of Merauke District. Soil sub grade in Veteran Street is clay that easily occurs due to deformation caused by passing vehicle. This research collected soil sub grade characteristic, number of vehicles, California Bearing Ratio, and traffic growth in Merauke District. Vehicle data collection through direct measurement at research location, sub-grade characteristic, and California Bearing Ratio data using Dynamic Cone Penetrometer tool, piknometer and hot plate. An analysis was performed using Pavement Design Manual 2013. The result obtained was a plastic limit of 34,72%, liquid limit of 55,8%, plasticity index of 21,07%. The potential for shrinkage is hight based on the plasticity index value, known as expansive soil. Pavement using flexible pavement with surface course composition of AC-WC as thick as 40mm and AC-BC as thick as 60mm, LPA course thickness of 40cm thus the total thickness of pavement in Veteran Road is 500mm.

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Synthesis of mercaptoethyl ester of palm fatty acid distillate: Effects of dehydration methods

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IOP Conference Series: Materials Science and engineering 2020年第1期823卷

作者： I Dewa Gede Arsa Putrawan Dicka Ar Rahim Andri Patuan Anggi Sitompul Salma Rifasari Wakana Research Group on Chemical Engineering Product Design & Development Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia. Research Group on Chemical Engineering Energy & Process System Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia. Study Program of Chemical Engineering Faculty of Industrial Technology Institut Teknologi Bandung Bandung Indonesia.

This research was aimed to evaluate the synthesis of mercaptoethyl ester of palm fatty acid distillate (PFAD) where water as a byproduct was removed by using vacuum distillation and azeotropic distillation. The reactions were done in a batch reactor using para-toluene sulfonic acid (pTSA) as a catalyst. The performances of the synthesis were evaluated by measuring the sulfhydryl content and yield of the product. Compared to dehydration by vacuum distillation, dehydration by azeotropic distillation gave lower sulfhydryl content and yield but faster reaction completion. Azeotropic distillation gave sulfhydryl content and yield in the range of 6–7% and 57–74%, respectively. Vacuum distillation gave sulfhydryl content and yield in the range of 7–9% and 75–85%, respectively.

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Computer Modelling of the Information Properties of Hyper Chaotic Lorenz System and Its Application in Secure Communication System

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Journal of Physics: Conference Series 2021年第1期1764卷

作者： Volodymyr Rusyn Mujiarto Mustafa Mamat Firmansyah Azharul W. S. Mada Sanjaya Aceng Sambas Estiyan Dwipriyoko Akhmad Sutoni Yuriy Fedkovych Chernivtsi National University Kotsybynsky str. 2 Chernivtsi 58012 Ukraine. Department of Mechanical Engineering Universitas Muhammadiyah Tasikmalaya Indonesia Faculty of Informatics and Computing Universiti Sultan Zainal Abidin Kuala Terengganu Malaysia Department of Mechanical Engineering Sekolah Tinggi Teknologi Cileungsi Indonesia Department of Physics Universitas Islam Negeri Sunan Gunung Djati Bandung Indonesia Informatics Study Program Universitas Langlangbuana Bandung Indonesia Department of Industrial Engineering Universitas Suryakancana Cianjur Indonesia

This paper presents computer modeling, analysis and research of the hyper-chaotic Lorenz system based on programming interface that has been developed in LabView software environment. This study allows for generating and research of the main information properties of hyper-chaotic Lorenz system, focusing on time distribution of the four chaotic coordinates, phase portraits and Lyapunov exponents. The programming interface demonstrates the algorithm of masking and decrypt of the information carrier.

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Assessment of Bridge Deck Movement under the Impact of Environmental Factors and Traffic Load

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IOP Conference Series: Materials Science and engineering 2020年第1期884卷

作者： Trung-Hieu Ha Tien-Yin Chou Yao-Min Fang PhD program of Civil and Hydraulic Engineering College of Construction and Development Feng Chia University TAIWAN Faculty of Civil Engineering University of Transport and Communications – Campus in Ho Chi Minh City TAIWAN GIS Research Center Feng Chia University Taichung TAIWAN

The Bridge Health Monitoring (BHM) system has become crucial for long-span bridge structures. This study aims to assess the bridge deck movement based-on GPS time series data and environmental data obtained from BHM system. The correlation and regression analysis are utilized to find out the pairwise relationship between the bridge deck movement in all directions and environmental factors as well as traffic load. The result shows the highest correlations in bridge deck vertical movements, the symmetrical oscillation in different parts of bridge deck and it also reveals the impact of air temperature change, wind velocity and traffic vehicle on bridge deck movement in all directions.

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Fracture Zone Analysis Based On Property Electrical Borehole Image Log And Geomechanic Geothermal Field Solok, West Sumatra

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Journal of Physics: Conference Series 2019年第1期1363卷

作者： Friska Agustin Chalid Idham Abdullah Merandy Palabiran Asti Sulastri Geology Engineering Study Program Faculty of Earth Sciences and Technology ITB Mechanical Engineering Study Program Faculty of Mechanical and Aerospace Engineering ITB Mining Exploration Institute of Technology & Science Bandung (ITSB)

Prospective area of Solok geothermal lies in step over transtensional between two segments, Suliti and Siulak, Sumatra faults. Geological structure in this prospect area shows structural pattern controlled by 'oblique divergent strike-slip fault system' (releasing bend) as a proceed of embraced movement from Sumatra fault and establishes 'dilation zone' between those two segments, forming negative flower structure in direction of NW-SE and N-S. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. The pattern of geological structure is predicted to control the availability of solok geothermal system which in this case related to presence of surface manifestation. Surface manifestation indicates good permeability zone that can be used as flow path of geothermal fluid from reservoir.

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The effect of groove welding on mechanical properties and microstructure of wear resistance steel plate by Submerged Arc Welding

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IOP Conference Series: Materials Science and engineering 2019年第1期694卷

作者： Zuldesmi Mansjur Hendro M Sumual I P Tamba Mechanical Engineering Study Program Engineering Faculty Manado State University Mechanical Engineering Education Department Engineering Faculty Manado State University

Aim of this research is to analyze the mechanical properties and microstructure of wear resistance steel plates joined by Submerged Arc Welding at different grooves welding. The welding current of 300 Ampere, voltage of 28 Volt and travel speed of 38 cm/min was applied. The microscopical examination methods were used for weld zones. Impact toughness and rockwell hardness test were obtained from the weld metal, heat affected zone and the base metal samples. The fracture surfaces were examined by using optical microscope. As results, there was no difference of hardness and microstructure among three grooves welding. The significant differences were detected at the weld zones. Base metal had the highest hardness value. Ferrite and pearlite phases were obtained at three weld zones, but the heat affected zone had coarser grain structure than the base metal. Weld metal volume and electrode length significantly affected the impact toughness of joint, where the larger of the weld metal volume and length of electrode fill in the groove welding, the higher of impact toughness. The lowest impact energy and toughness value were attained at V groove and the highest was at I groove. The fracture surfaces at all groove welds showed ductile fracture dominantly.

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Late Palaeozoic-Early Mesozoic Tectonic-Magmatic Evolution and Mineralization in the Eastern Section of East Kunlun Orogenic Belt

Late Palaeozoic-Early Mesozoic Tectonic-Magmatic Evolution a...

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第九届世界华人地质科学研讨会

作者： CHEN Guochao PEI Xianzhi LI Ruibao LI Zuochen PEI Lei LIU Chengjun CHEN Youxin WANG Meng WEI Junqi School of Civil Engineering Nanyang Institute of Technology Faculty of Earth Science and Resources Chang'an University Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of Education MLR Key Laboratory for the study of Focused Magmatism and Giant Ore Deposits Key Laboratory of Rare Mineral Ministry of Land and Resources

The East Kunlun Orogenic Belt(EKOB) is located at the west of the Central Orogenic System of China(Fig. 1), reserved complex and multiple tectono-magma events occurred in the past hundreds of million years as a compound continental orogenic belt(Meng et al., 2015;Yu et al., 2017;Chen etl al., 2018;Li et al., 2018;Dong et al., 2018;Pei et al., 2018). Thus the magma carried abundant ore-bearing fluid from deep of the Earth to form large-scale polymetallic deposits. For instance, deposits of Cu, Au, Pb, Zn, Ag and Ni, and provides an ideal place for studying the relationship between magmatism and metallogenesis. Overall, the tectonic evolution of the EKOB from Late Paleozoic to Early Mesozoic can be divided into three stages, i.e. oceanic crust subduction stage(277-240 Ma), syncollision stage(240-230 Ma) and post-collision stage(230-200 Ma). Crust-mantle magma mixing and mingling occurred during the whole evolution process of the paleo-Tethys Ocean. The mafic plutons are most likely derived from partial melting of metasomatic mantle wedge with subduction fluid. Most of the granites magmatites are partial-melting products of lower crust. The crust-mantle magmatic mixing in the subduction stage of the eastern part of the East Kunlun orogen not only brings mineralization materials and result in the enrichment of some elements, but also brings heat source. After the change of the physical and chemical conditions of the ore-forming flow, a large number of mineral deposits. The main metallogenic combination is Cu, Mo, and Au, generating small deposits in *** the syncollision stage, due to the compressive stress, the magmatic rock developed rarely, and the ore deposits distributed along the faults of the EKOB, andthe main ore metal were Cu, Mo, and Au. In the post-collision stage, as a result of delamination of the lithospheric mantle in the extensional environment, which provides a channel for mantle materials to participate in mineralization. Especially, the conversion

关键词： East Kunlun Orogenic Belt magma evolution magma mixing and mingling mineralization

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Reduction of BOD and COD of by using stratified filter and constructed wetland for blackwater treatment

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IOP Conference Series: Materials Science and engineering 2019年第1期469卷

作者： Lies Kurniawati Wulandari M Bisri Donny Harisuseno Emma Yuliani Doctoral Program in Civil Engineering Faculty of Engineering Brawijaya University Indonesia Civil Engineering Department Postgraduate Program Malang National Institute of Technology Indonesia Water Resources Engineering Department Faculty of Engineering Brawijaya University Indonesia Civil Engineering Department Faculty of Engineering Brawijaya University Indonesia

Blackwater is a type of domestic wastewater that must be processed before discharge into the river. This study uses gravel, sand, and charcoal as filtration materials which arranged from coarse to fine, and also wetland system using Vetiver grass (Vetiveria zizanioides) and Cattail (Typha angustifolia). The treatment process is obtained by applying different treatments related to the sand thickness and blackwater residence time in the wetland. The focus of observation is emphasized on the measurement of BOD (Biological oxygen demand) and COD (Chemical oxygen demand). Both parameters measured and compared with the standard of water for agricultural purposes (Grade IV) regulated by Indonesian Government. The results showed that stratified filters can reduce the levels of BOD and COD effectively. The final results obtained after blackwater flowed through the wetland tube shows that BOD and COD levels have yet to meet the standard of grade IV water, although the overall result indicated the significant reduction of both parameters. This can be related to the input of organic matter from wetland itself, and it also can be considered an indication that blackwater treatment requires longer residence time.

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