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1st International Conference on environmental sciences, ICES 2018

作者： Onasis, Aidil Barlian, Eri Razak, Abdul Department of Environmental Science Post Graduate Program Universitas Negeri Padang Prof. Dr. Hamka Street West Air Tawar Padang-West Sumatera25131 Indonesia Padang Health of Polytechnic Environmental Health Departement Siteba Street Padang-West Sumatera25146 Indonesia

Suspect vector of Dengue Haemorrhagic Fever (DHF) and Chickungunya transmitted by Aedes aegypti and Aedes albopictus in container as potential breeding places. This study used a descriptive design, data collection in Kuranji, Nanggalo and Padang Timur and Lubuk Begalung district for 5 months in Padang with populations in house as many as 400 larvae index for density analysis to interpretation. The results container at risk of becoming breeding places of Aedes aegypti in Padang Timur districts 14.25%, and Aedes albopictus in Kuranji 20.75%. 3 classification area analysis are Aedes aegypti and Aedes albopictus in the container in the form of supervision that more routine in Nanggalo compared Kuranji and Lubuk Begalung well as in Padang Timur as well as control by getting rid of that is rare in Kuranji and Padang Timur while in Nanggalo and Lubuk Begalung category often get rid of the landfill. Updating data analysis results in the form of survey results, mosquito density monitoring strategy regularly and periodically by the community with assistance by health workers as well as the risk of transmission as well as the anticipation of Extraordinary Events and prevention of dengue outbreaks. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Containers

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Ultrasound-assisted synthesis of adsorbents from groundwater treatment residuals for hexavalent chromium removal from aqueous solutions

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Groundwater for Sustainable Development 2017年 5卷 253-260页

作者： Kan, Chi-Chuan Sumalinog, Mario Jose R. Rivera, Kim Katrina P. Arazo, Renato O. de Luna, Mark Daniel G. Institute of Hot Spring Industry Chia-Nan University of Pharmacy and Science Tainan71710 Taiwan Environmental Engineering Program National Graduate School of Engineering University of the Philippines Diliman Quezon City1101 Philippines Department of Chemical Engineering University of the Philippines Diliman Quezon City1101 Philippines College of Engineering and Technology University of Science and Technology of Southern Philippines Claveria9004 Philippines

Groundwater treatment residuals are rich in nano-sized metal oxides which have the potential to remove various water contaminants. In this study, hexavalent chromium adsorbents were synthesized from the residuals of a 30,000 m3 d-1 groundwater treatment plant in Taiwan. The effects of acid type and ratio, acid concentration, ultrasonication time, and heating duration on adsorption capacity were examined. Adsorbents synthesized using dual-acid solutions yielded lower adsorption capacities compared to those which used pure acid solutions. Adsorption capacity decreased with higher ultrasonication time and heating duration. Chromium removal was improved with higher ionic strength and lower pH of the solution. Results showed high correlation between experimental data and the Freundlich isotherm (R2 = 0.9607) and the pseudo-second order kinetic model (R2 = 0.9740) suggesting that the dominant mechanism in the adsorption process is chemisorption. The involvement of Fe and Mn species during chromium adsorption was confirmed by the results of energy dispersive X-ray spectroscopy and Fourier transform infrared (FTIR) spectroscopy analyses. © 2017

关键词： Adsorption

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Zeolite micropattern on biological application

Zeolite micropattern on biological application

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2006 NSTI Nanotechnology Conference and Trade Show - NSTI Nanotech 2006 Technical Proceedings

作者： Wong, L.W. Sun, W. Lam, K.F. Yeung, K.L. Bioengineering Graduate Program Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong Department of Chemical Engineering Hong Kong University of Science and Technology Clear Water Bay Kowloong Hong Kong Department of Chemical Engineering Environmental Engineering Program Hong Kong University of Science and Technology Clear Water Bay Kowloon Hong Kong

ISBN: (纸本)0976798565

Zeolite micropattern created from structurally similar hydrophobic Sil-1 and hydrophilic ZSM-5 zeolites, and tested for the immobilization of fluorescein isothiocyanate conjugate bovine serum albumin (BSA-FITC), biotin conjugate bovine serum albumin (Biotin-BSA), Hochest 33342 and rhodamine conjugate α- bungatoxin, were preferentially deposited onto hydrophobic ZSM-5 patterns regardless of the pattern geometry. Being inorganic, the zeolite micropattern does not deteriorate with time and can be readily reused by simply burning away the deposited chemicals and biomolecules. This suggests that compositional micropattern of zeolite could be used to create high resolution array of biomolecules on flat substrate.

关键词： Zeolites

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Particulate pollution levels and source apportionment in six asian cities: Preliminary findings of AIRPET

Particulate pollution levels and source apportionment in six...

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Air and Waste Management Association's - 98th annual Conference and Exhibition

作者： Oanh, Nguyen Thi Kim Upadhyay, Nabin Zhuang, Ya-hui Hao, Zengping Murthy, D.V.S. Swaminanthan, T. Puji, Lestari Villarin, Jose T. Khervin, Chengchua Co, Hoang Xuan Trung, Dung Nghiem Lindgren, Eva Selin Environmental Engineering and Management Program Asian Institute of Technology Thailand Research Center for Eco-Environmental Sciences Graduate School University of Science and Technology of China Beijing China Department of Chemical Engineering Indian Institute of Technology Madras India Department of Environmental Engineering Institute of Technology of Bandung Indonesia Manila Observatory Quezon City Philippines Faculty of Environmental Sciences Hanoi University of Science Hanoi Viet Nam Hogskolan I Boras Sweden

ISBN: (纸本)0923204881

AIRPET, an Asian regional air pollution research network, which is coordinated by the Asian Institute of technology, involves six cities: Bandung, Bangkok, Beijing, Chennai, Manila, and Hanoi. One of the objectives of the network is to provide a comprehensive assessment of particulate matter (PM) air quality though monitoring and receptor modeling tools jointly by six research teams in these cities. The results within the scope of this monitoring and modeling objective in phase 1 (2001-2003) were presented. In total, the network collected over 2500 PM_2.5 and PM₁₀ samples from characteristic urban sites. In all these cities the levels of PM₁₀ and PM_2.5 were found high especially during the dry season which the frequently exceeded the EPA standard for PM₁₀ and PM_2.5, especially at the traffic sites. Traffic had the highest PM_2.5 contribution in most cities with the exceptional high share (> 70%) in Manila. Traffic and coal combustion had high contribution in Beijing while NaNO₃ was found high in Hanoi. This is an abstract of a paper presented at the 98th AWMA Annual Conference and Exhibition (Minneapolis, MN 6/21-24/2005).

关键词： Air quality

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A mini-review on plasticrusts: occurrence, current trends, potential threats, and recommendations for coastal sustainability

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environmental Monitoring and Assessment 2024年第2期196卷 1-14页

作者： Nguyen, Minh-Ky Rakib, Md. Refat Jahan Nguyen, Hoang-Lam Lin, Chitsan Malafaia, Guilherme Idris, Abubakr M. Faculty of Environment and Natural Resources Nong Lam University of Ho Chi Minh City Hamlet 6 Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Ph.D. Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Fisheries and Marine Science Faculty of Science Noakhali Science and Technology University Sonapur Noakhali3814 Bangladesh Department of Civil Engineering McGill University Montreal Canada Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Post-Graduation Program in Ecology Conservation and Biodiversity Federal University of Uberlândia MG Uberlândia Brazil Post-Graduation Program in Biotechnology and Biodiversity Federal University of Goiás GO Goiânia Brazil Post-Graduation Program in Conservation of Cerrado Natural Resources Goiano Federal Institute GO Urutaí Brazil Department of Chemistry College of Science King Khalid University Abha62529 Saudi Arabia King Khalid University Abha62529 Saudi Arabia

Plasticrusts manifest as a coating on intertidal rocks due to environmental exposure. They refer to crushed plastic debris that blankets rocks found along intertidal shorelines. This study significantly contributes to a better understanding of the occurrence of these novel plastic formations, shedding light on their potential pathways of formation during the Anthropocene era. The research provides comprehensive insights into the composition, origins, challenges, and effective management strategies for removing coastal plastic litter. The findings of this investigation offer valuable evidence regarding the formation and impact of these recently discovered plastic items in coastal regions, prompting discussions about their formation processes and their effects on the marine ecosystem. Recognizing that these newly emerged plastic litter pose a considerable threat to the marine environment is crucial. With their emergence, we face an environmental challenge, especially concerning the health of coastal ecosystems. Plasticrusts, when degraded, can release microplastics (MPs) and nanoparticles (NPs) into the surrounding environment. These micro- and nano-sized plastic particles pose significant ecological risks as they persist in ecosystems, potentially harming wildlife and entering the food chain, causing widespread environmental contamination. Significantly, it outlines strategies to minimize the impact of this emerging plastic debris and its source. © 2024, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

关键词： Ecosystems

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Tandem Repeats Analysis in DNA Sequences Based on Improved Burrows-Wheeler Transform

Tandem Repeats Analysis in DNA Sequences Based on Improved B...

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International Conference on Advanced Computer science and Information Systems

作者： Peter Juma Ochieng Taufik Djatna Wisnu Ananta Kusuma Graduate Program of Computer Science Bogor Agricultural University Dramaga Indonesia Forensic Scientist Kenyatta National Hospital Nairobi Kenya Post Graduate Program of Agro-industrial Technology and Graduate Program of Computer Science Bogor Agricultural University Dramaga Indonesia Post Graduate and Graduate Program of Computer Science Bogor Agricultural University Dramaga Indonesia

ISBN: (纸本)9781509003648

The enormous amount of short reads generated by the new DNA sequencing technologies call for the development of fast and accurate read alignment programs. A first generation of hash table-based methods has been developed, including Mapping and Assembly with Quality (MAQ), which is accurate, feature rich and fast enough to align short reads from a single individual .However, MAQ does not support gapped alignment for single-end reads, which makes it unsuitable for alignment of longer reads where indels may occur frequently. The speed of MAQ is also a concern when the alignment is scaled up to the resequencing of hundreds of individuals. Therefore, we carried out an in-depth performance analysis of BWA a popular BWT-based aligner and discovered that its performance is significantly better than MAQ although, it has drawbacks regarding execution speed, time complexity and accuracy. Based on those factors we implemented an improved Burrows-Wheeler Alignment algorithm (BWA), anew read alignment package which is original BWT optimized by source code of Ziv-Lempel (LZ-77) sliding window technique and prefix trie string matching, to efficiently search for inexact and exact matches on tandem repeats against a large reference sequence genome. Our analysis show that search speed of improved BWA significantly increased by approximately 1.40 ×faster than MAQ-32 while achieving sufficiently higher accuracy with percent confidence of 96.7 % and 93.0 %. Moreover, it is more efficient to search exact and inexact matches supported by percent error of 0.05 % single ends and 0.04 % for paired end reads also more effective to search for left and right overlap tandem repeat at percent confidence of 88.9%

关键词： BWA prefix trie tandem repeats BWT

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Technical note: A rapid, non-invasive method for measuring live or preserved insect specimens using digital image analysis

Forensic Science International: Synergy

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Forensic science International: Synergy 2019年 1卷 140-145页

作者： Bourne, Donald R. Kyle, Christopher J. LeBlanc, Helene N. Beresford, D. Environmental and Life Sciences Graduate Program Trent University Peterborough Ontario Canada Forensic Science Department Trent University Peterborough Ontario Canada Faculty of Science - Forensic Science University of Ontario Institute of Technology Oshawa Ontario Canada Biology Department Trent University Peterborough Ontario Canada

The measurement of insects is an important component of many entomological applications, including forensic evidence, where larvae size is used as a proxy for developmental stage, and hence time since colonization/death. Current methods for measuring insects are confounded by varying preservation techniques, biased and non-standardized measurements, and often a lack of sample size given practical constraints. Towards enhanced accuracy and precision in measuring live insects to help avoid these variables, and that allows for different measurements to be analyzed, we developed a non-invasive, digital method using widely available free analytical software to measure live blow fly larvae. Using crime scene photographic equipment currently standard in investigation protocols, we measured the live length of 282 Phormia regina larvae. Repeated measurements of maggots, for all instars, were performed for several orientations and images. Most accurate measurements were obtained when maggots were oriented in their natural full extension. Killed specimens resulted in greater length measurements (Mean 1.79 ± 1.11 mm) when compared to live length. Herein, we report a technically simple, fast, and accurate measurement technique adapted for field and lab-based measurements, as well as, a simple linear equation for conversion of live length to standard killed length measurements. We propose this method be utilized for the standardization of forensic entomological evidence collection and development model creation. © 2019 The Authors

关键词： Digital image measurement Forensic entomology Forensic photography Insect size Morphometric Phormia regina

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Coastal Community Group for Coastal Resilient in Timbulsloko Village, Sayung, Demak Regency, Indonesia 2

Coastal Community Group for Coastal Resilient in Timbulsloko...

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2nd International Conference on Energy, environmental and Information System, ICENIS 2017

作者： Purnaweni, Hartuti Kismartini Hadi, Sudharto P. Soraya, Ike Master and Doctorate Program of Environmental Science School of Post Graduate Studies Diponegoro University Semarang50241 Indonesia Public Administration Department Faculty of Social Science and Political Science Diponegoro University Semarang50275 Indonesia Business Administration Department Faculty of Social Science and Political Science Diponegoro University Semarang50275 Indonesia Alumni Master Program of Public Administration Faculty of Social Science and Political Science Diponegoro University Semarang50275 Indonesia

Coastal areas are very dynamic and fragile environment, demanding for policies to preserve these areas as materialized in the Resilient Coastal Development program (PKPT) by the Indonesian government. Amongst the targeted area was Timbulsloko Village in Sayung District, Demak Regency, which coastal areas is severely damaged by erosion. This article analyzed the development of the Coastal Community Group (CCG) related to the PKPT program in Timbulsloko village, especially in how the group is empowered to increase the community's resilient in facing the disaster. This study, applied an analytical descriptive method, used the development of the CCG as phenomenon. Primary data was collected through observation and in-depth interviews with stakeholders, accompanying the secondary data. The result shows that the PKPT funding was mostly spent on infrastructure development and used for project management, not for optimizing local economic empowerment. After the completion of the PKPT, there are no actions or following programs to keep the physical results constructed by the CCG. Accordingly, the orientation towards the CCG building capacity for Timbulsloko community's ecological resilience had not been optimally implemented. This study recommended a "putting the last first" policy approach to preparing the local community. The government must play a stronger role in encouraging a self-help local group for strong human development. © 2018 The Authors, published by EDP sciences.

关键词： Project management

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Physical characteristics of modified cassava flour wastewater at room temperature

Physical characteristics of modified cassava flour wastewate...

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International Conference on Food science and technology 2018, ICFST 2018

作者： Yaqin, N. Al-Baarri, A.N. Legowo, A.M. Widayat Budihardjo, M.A. Program of Environmental Science School of Post-Graduate Studies Diponegoro University Semarang Indonesia Food Technology Department Faculty of Animal and Agricultural Sciences Diponegoro University Semarang Indonesia Chemical Engineering Department Faculty of Engineering Diponegoro University Semarang Indonesia Center of Research and Services Diponegoro University Semarang Indonesia Department of Environmental Engineering Faculty of Engineering Diponegoro University Indonesia

Cassava is an agricultural material that is considered as important raw resources in the industrial sector. The benefits are even greater after being modified using lactic acid bacteria. However, the mocaf industry often causes water and air pollution. environmental problems arise after the fermentation process. Determination problems with lightness, TDS (Total Dissolved Solid), conductivity and pH analysis are required to measure the impact to the environment. This research was used waste water from mocaf during 3 days fermentation. The wastewater had the highest color level (Lightness) on initial day of fermentation at 83.7±3.73 and then decrease along the day of fermentation at the averages of 65.2±2.0. The highest TDS was resulted from the mocaf wastewater at a value of 1218 ± 4.6 ppm which continued to decline until day 4. The conductivity and pH showed a decrease along the day of fermentation. As conclusion, physical characteristic of wastewater from mocaf production could be analyzed specifically and determined through color, TDS, conductivity, and pH. © 2019 Published under licence by IOP Publishing Ltd.

关键词： Fermentation

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ANALYSIS OF NITROGEN FLOW IN FOOD WASTE: A CASE STUDY OF THE UNIVERSITY RESTAURANT-UNB 32nd

ANALYSIS OF NITROGEN FLOW IN FOOD WASTE: A CASE STUDY OF THE...

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32nd European Biomass Conference and Exhibition, EUBCE 2024

作者： Ramos, Arthur Augusto Frasson De Brites, Eneida Campos Felipe Soares, Raquel Moraes Silveira, Edgar A. Contreras, Francisco University of Brasilia Department of Civil and Environmental Engineering DF Brasilia70910-900 Brazil University of Brasilia Graduate Program on Environmental Technology and Water Resources Department of Civil and Environmental Engineering DF Brasilia70910-900 Brazil Federal Institute of Education Science and Technology of Brasília Estrutural Campus DF Brasília71250-000 Brazil University of Brasília Mechanical Sciences Graduate Program Laboratory of Energy and Environment DF Brasilia70910-900 Brazil

With the projected global population reaching 9.7 billion by 2050, the production and consumption of food continue to escalate. Nitrogen is pivotal in this landscape due to its significance in living organisms and the environmental repercussions associated with nutrient-rich waste. Inappropriate disposal of such residues contributes to nitrogen release into the environment, impacting aquatic ecosystems and precipitating the generation of greenhouse gases. This study tackles the global challenge of effectively managing nitrogen in food waste by utilizing Material Flow Analysis (MFA) as a tool to comprehend this cycle. The analysis uncovered that vegetables, legumes, and fruits constitute the primary sources of waste generation, while meats, despite their lower mass, account for a substantial proportion of total nitrogen depletion. In the surveyed month of October 2023, 174,834 meals were served, resulting in an average food consumption N-footprint of 0.003 kg of nitrogen discarded per individual meal within the restaurant’s organic waste. These findings indicate that 65% of nitrogen is consumed in meal form, while 35% is discarded as organic solid waste. However, 53% of the nitrogen in the residues originates from food preparation processes, with food preparation responsible for over half of this figure. A deeper process analysis reveals that vegetables have low nitrogen concentrations, although they significantly contribute to waste at all stages. In contrast, meats and eggs, with higher nitrogen concentrations, emerge as noteworthy contributors to the overall nitrogen content in waste. Vegetables and meats contribute about 50% and 45% of the total nitrogen, respectively. These outcomes substantially enhance our comprehension of waste generation dynamics and nutrient utilization at the university restaurant, assisting with waste management, design of sustainable menus, reduction of food waste, and optimized resource utilization, contributing to sustainability and re

关键词： Effluent treatment

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