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Analysis of small island environmental carrying capacity in Panggang Island, Jakarta, Indonesia

IOP Conference Series: Earth and Environmental Science 2021年第1期777卷

作者： W Windupranata A Rahma G Chairuniza M Triargi D Kusumadewi I Hayatiningsih Hydrography Research Group Faculty of Earth Science and Technology Institut Teknologi Bandung Geodesy and Geomatics Engineering Study Program Faculty of Earth Science and Technology Institut Teknologi Bandung Urban and Regional Planning Study Program Faculty of Architecture Planning and Policy Development Institut Teknologi Bandung

To support continuity of life, information on the availability of natural resources is needed. Natural resources need in a region must not exceed their availability. Panggang Island is a small island with an area of 13.76 ha and a population density up to 4,388 people in 2019. The land use of the island is intended as a residential area. With a small area and dense population, the ability of the environment to support life in Panggang Island is concerning. This study aims to determine the carrying capacity of water and land in Panggang Island. Water carrying capacity analysis is carried out by comparing the amount of water resource availability with standard water needs. The Thornthwaite Mather method is applied to calculate the water resource availability. Land carrying capacity analysis is based on a comparison of the amount of actual residential land with minimum space requirements of each individual according to the Indonesian National Standard (SNI 03-1733-2004). The results showed that Panggang Island has a very low carrying capacity for water and land. The water and land carrying capacity index reaches 0.12 and 0.98 respectively. This shows that the demands of residential land and water in Panggang Island are higher than the resources.

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Analysis on Calculation of Vehicle Operating Cost (VOC) Before and After Flyover & Road Widening Operation at Gedangan Intersection in Sidoarjo Regency

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Journal of Physics: Conference Series 2020年第4期1569卷

作者： R Endro Wibisono Purwo Mahardi Program Study of Civil Engineering Engineering Faculty Universitas Negeri Surabaya.

The main road that connects the city of Sidoarjo to Surabaya is the intersection of Gedangan. By 2018 it has reached saturation by having a poor service level. More severe conditions will occur in the next 10-20 years. One of the government's efforts to overcome the problem of congestion, damage structure is the construction of flyover or other alternatives by widening the road. The purpose of this study is to determine the characteristics of the traffic and to save vehicle operating costs before and after the construction of a flyover at the Gedangan intersection. The method for predicting Vehicle Operating Costs (BOK) is to use PCI method. This study predicts Vehicle Operating Costs (BOK) to determine cost savings. The scenario for predicting BOK is that 80% of the vehicle volume will pass the Fly Over, and 20% still use the existing road. The results showed that the cost savings of Vehicle Operational Costs (BOK) of existing roads compared to the use of flyover in 2019 was IDR 15 Billion. In 2039 the savings are IDR 77 Billion. Another discussion is that if the road is only widened without flyover, then the BOK cost savings in 2019 will be IDR 4 Billion and in 2039 it will be IDR 27 Billion.

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Designing database lecture model in informatics engineering study program

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Journal of Physics: Conference Series 2020年第1期1516卷

作者： C E Supriana Informatics Engineering Study Program Faculty of Engineering Pasundan University Bandung Indonesia

Database lectures in the informatics engineering study program teach the life cycle of database system development, both in terms of concepts, utilization, administration to database application systems to be studied, practiced and understood by students. Database teaching in the informatics engineering department of a private university with very diverse student participants, the ability to master computer and information technology and skills requires teaching material, lecturing strategies, lecturer quality, and facilities must also be able to adjust toward challenges, concept development, and database technology. This database design research model used Hevner's information systems research framework, starting with reference research, database lecture analysis, rigor and research relevance. This research covered the steps of constructing artifacts in the form of constructs, models, methods, instantiation, and evaluation of artifacts. The use of the framework intended to support business strategies and processes in study programs and ensure the relevance of research. The benefits of this research will produce a database lecture model that can be used as a reference and lecture development in the informatics engineering study program. Reference to produce graduates with understanding and skills in database design, the use of Database Management System (DBMS), the ability in administration and professional capability in the database field. This research will be relevant to the study program environment as well as scientific benefits in research and database teaching.

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Vibration problem due to railway loading

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IOP Conference Series: Earth and Environmental Science 2021年第1期739卷

作者： F Alami L Afriani Faculty of Engineering University of Lampung Bandar Lampung Indonesia Postgraduated Student of Study Program of Environmental Science University of Lampung Bandar Lampung Indonesia

Train is one of transportation mode is increasingly polular in Indonesia nowdays, although in developed countries this transportation has long been a very advanced mode of mass transportation. Problems due to railroad tracks adjacent to densely populated settlements cannot be avoided. Problems such as noise levels can interfere with the health and comfort of the environment, vibrations in the surrounding environment due to passing trains cause some damage to civilian buildings such as residents' houses and high rise buildings as well. This field study shows the potential problem due to mass train loading (Babaranjang) in Bandar Lampung.

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The comparison of empirical and finite element methods to evaluate soil foundation capacities for coastal dike

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IOP Conference Series: Materials Science and engineering 2020年第1期930卷

作者： Suyuti Zulkarnain K. Misbah Zhafirah M. Ardhana Lecturers at Study Program of Civil Engineering Faculty of Engineering Universitas Khairun North Maluku Indonesia Undergraduate Student at Study Program of Civil Engineering Faculty of Engineering Universitas Khairun North Maluku Indonesia

There are over 6,300km of coastlines in the North Maluku province of Indonesia due to tidal waves which originate from the pacific ocean. The waves deposit finely loosed materials and light soil formations on coastlines, therefore causing abrasion. A common example occurred in Toseho, Tidore, and Archipelago districts. Moreover, the local residence has been faced with this challenge for up to thirty years. For this reason, deliberations to construct a dike became significant, although, the soil properties are vulnerable. This reasearch, therefore, compares the empirical calculation to the finite element method (FEM) to ascertain soil foundation capacities. The results showed the safety factor, Fs, for dike height, Hd, of 3.5 m and width bottom, B1, of 12.5m appeared below 2.0 for soil friction s of 10~ 15°, while estimates above 2.0 depicts soil friction s of 20°. Furthermore, the soil stresses beneath the dike were determined empirically at qmax of 5.97 t/m2 and σs of 4.57 t/m2, while FEM evaluated the deformation elastic at 12.5 cm.

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Phage therapy

NATURE REVIEWS METHODS PRIMERS

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NATURE REVIEWS METHODS PRIMERS 2025年第1期5卷 1页

作者： [Anonymous] Human Microbiome Research Program Department of Bacteriology and Immunology Faculty of Medicine University of Helsinki Helsinki Finland European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Study Group for Non-traditional Antibacterial Therapy (ESGNTA) Basel Switzerland Institute of Biomedical and Oral Research (IBOR) Faculty of Dental Medicine Hebrew University of Jerusaleum Jerusalem Israel The Israeli Phage Center (IPTC) of the Hebrew University and Hadassah Medical Center Jerusalem Israel Department of Clinical Microbiology and Infectious Diseases Hadassah–Hebrew University Medical Center Jerusalem Jerusalem Israel Laboratory of Gene Technology Department of Biosystems KU Leuven Leuven Belgium Leicester Centre for Phage Research Department of Genetics and Genome Biology University of Leicester Leicester UK Center for Evolutionary Hologenomics Globe Institute University of Copenhagen Copenhagen Denmark Centre of Excellence for Omics-Driven Computational Biodiscovery (COMBio) AIMST University Bedong Kedah Malaysia Laboratory of Phage Molecular Biology Institute of Immunology and Experimental Therapy Wrocław Poland Wrocław University of Science and Technology Faculty of Medicine Wrocław Poland Department of Biological Sciences University of Pittsburgh Pittsburgh PA USA Laboratory for Molecular and Cellular Technology Queen Astrid Military Hospital Brussels Belgium Department of Biological and Environmental Science Nanoscience Center University of Jyväskylä Jyväskylä Finland Chemical Engineering Department Loughborough University Loughborough UK

Bacteriophage (phages) are viruses that exclusively use bacterial cells for propagation, killing the bacterial host in the process. In phage therapy, phages are used to reduce bacterial numbers, thereby curing bacterial infections. Although this principle is conceptually straightforward, its practical application faces several hurdles. In this Primer, the practical aspects of phage therapy are outlined. We introduce the microbiological methods used to prepare and characterize phages and elucidate their interactions with bacteria. The discussion covers how the information in complete phage genome sequences is used, along with how RNA sequencing can enhance our understanding of phage biology. Selection parameters for therapeutic phages for clinical applications and key elements in industrial-scale phage production are provided. A summary of clinical trials both past and present, phage administration and dosing issues is analysed, as well as limitations associated with phage therapy and mitigation strategies. Finally, we speculate on the future of phage therapy.

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The development of the model of influence of sociodemographic characteristics and disaster experience toward household preparedness for facing landslide in Bogor regency

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IOP Conference Series: Earth and Environmental Science 2021年第1期708卷

作者： P D Saputra C Rahmawati P Karuniakhalida K S H Purnomo E Larosa Military Building Construction Engineering Study Program Faculty of Military Engineering Indonesia Defense University Bogor Indonesia Industrial Engineering Department Faculty of Industrial Technology Universitas Dirgantara Marsekal Suryadarma Jakarta Indonesia Mathematic for Education Program Faculty of Teacher Training and Education Universitas Riau Riau Indonesia Master of Management Program Universitas Teknologi Yogyakarta Yogyakarta Indonesia Mechanical Engineering Education Faculty of Teacher Training and Education Universitas Negeri Yogyakarta Yogyakarta Indonesia

Indonesia has a high tendency of having landslides. Bogor is one of regency which is very prone to landslide disaster due to high rainfall. Landslides are a very dangerous threat to public safety. The preparedness can build disaster resilient communities that can support the national resilience. Sociodemographic characteristic and disaster experience are determining factors for the success of preparedness. The purpose of this research is to develop a model of the influence of sociodemographic characteristics and disaster experience toward household preparedness for facing landslide. This research is done in Cibadak Village, Sukamakmur Bogor. This research uses a quantitative approach with 100 sample of households. Multiple linear regression technique is used for analyzing the model. The results of the research showed that household preparedness is significantly influenced by sociodemographic characteristics which is education (p = 0.000), meanwhile age, income and the number of family member don't significantly influence. Beside that the household preparedness is also greatly influenced by disaster experience too (p = 0.000). Education influence on household preparedness for facing landslide as much as 38.81% and the disaster experience is 52.85%.

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Role of bedrock serpentinization on the development of nickel laterite deposit in Sorowako, Sulawesi, Indonesia

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IOP Conference Series: Earth and Environmental Science 2021年第1期921卷

作者： U R Irfan A. Maulana F Muhammad Geological Engineering Department Faculty of Engineering Universitas Hasanuddin Jl. Malino Km. 6 Gowa 92171 South Sulawesi Indonesia Geological Engineering Study Program Faculty of Engineering Universitas Hasanuddin Jl. Malino Km. 6 Gowa 92171 South Sulawesi Indonesia

The objective of this research is to analyze the role of bedrock serpentinization on the development of Ni-Laterite deposits in Sorowako, Sulawesi Island, Indonesia. Samples were obtained from coring data in three areas, namely the West Block, East Block, and Petea, which are subject to mineralogical and geochemical analyses. Petrography of the bedrocks was conducted to analyze the mineral composition, texture, and serpentinization degree, and later correlated with the distribution of geochemical elements from X-ray fluorescence method in each laterite zone. The bedrock in the West Block is dunite which consists of predominantly olivine with low degree serpentinization. The bedrock in the East Blocks and Petea consists of peridotite in the form of lherzolite and harzburgite which have been moderate to highly serpentinized. The distribution of elements in each block shows that MgO, SiO2, and Ca elements significantly decrease towards the upper laterite profile while Fe, Al, and Cr are enriched in the limonite zone and Ni, Mn, and Co are significantly enriched in the saprolite zone. Ni, Fe, SiO2, Cr, MgO, and Mn in the West Block are relatively higher than the East Block and Petea. This study shows that Ni content is relatively higher in West Block compare to East Block and Petea in averages of 1.7%, 1.53%, and 1.3%, respectively. Olivine-rich bedrock and a low degree of serpentinization resulted in high-Ni concentration in the laterite profile, particularly in the saprolite layer. This means that bedrock characteristics and degree of serpentinization were responsible for the development of nickel.

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Forecasting model of power generated by wind power plants

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IOP Conference Series: Earth and Environmental Science 2021年第1期926卷

作者： A M Ilyas A Suyuti I C Gunadin S M Said Electrical Department Engineering Faculty University of Hasanuddin Jl. Perintis Kemerdekaan Km. 10 Makassar 90245 Indonesia. Electrical Engineering Study Program Engineering Faculty Khairun University Kelurahan Gambesi 97719 Ternate North Maluku Indonesia.

The power generated by wind power plants is unstable so forecasting is needed to maintain the power balance in an interconnected system. The purpose of this research is to predict the power generated at the Sidrap and Jeneponto wind power plants. The method used is an optimally pruned extreme learning machine (OPELM). The extreme learning machine (ELM) method is used as a comparison method. The mean absolute percentage error (MAPE) method is used to assess the level of forecasting accuracy. Forecasting power generation with Sidrap wind power plant data using the OPELM method is 0.8970% more accurate than the ELM which is 1.0853%. In general, the OPELM method is more accurate. Forecasting power generation with data from the Jeneponto wind power plant using the OPELM method is 2.4887% more accurate than the ELM method is 2.9984%. These results indicate that linear, sigmoid, and Gaussian activation in the OPELM method can increase accuracy. The OPELM method can be tested in forecasting the power generation at the Sidrap and Jeneponto wind power plants to maintain a power balance in the Sulselbar power grid system.

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Environmental management for small medium electroplating industry, A Cleaner production approach

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IOP Conference Series: Materials Science and engineering 2021年第1期1053卷

作者： A D P Citra H D Iswandari P Purwanto Study Program of Optometry Universitas Widya Husada Semarang Semarang Indonesia Universitas Widya Husada Semarang Semarang Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Diponegoro Semarang Indonesia

Small and medium scale electroplating industry produces a variety of plating products by using hazardous substances as raw materials. The production process at SMI electroplating held manually. Industrial environmental management is conducted by implementing clean production starting from waste prevention, reduction and recycling. Research is conducted in the field through observation and review of actions to reduce process failures and improve them. The success of implementing clean production as an environmental management effort can be extended to other SMIs.

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