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Benoxacor is enantioselectively metabolized by microsomes and cytosol from the human liver

Emerging Contaminants 2023年第1期9卷 10-19页

作者： Derek Simonsen Jacob Heffelfinger David M.Cwiertny Hans-Joachim Lehmler Department of Occupational and Environmental Health The University of IowaIowa CityIA52242United States Interdisciplinary Graduate Program in Human Toxicology The University of IowaIowa CityIA52242United States IIHR Hydroscience and Engineering The University of IowaIowa CityIA52242United States Department of Civil and Environmental Engineering The University of IowaIowa CityIA52242United States Center for Health Effects of Environmental Contamination The University of IowaIowa CityIA52242United States

Benoxacor is a safener added to current-use herbicide formulations to protect the target crop from herbicidal *** is an emerging environmental contaminant that has been detected in surface waters,raising the possibility of human exposure via drinking *** it is not subject to the same regulations as active pesticide ingredients,its metabolism and toxicity in humans have not been *** we investigate the enantioselective metabolism of benoxacor in human subcellular *** human liver microsomes(pHLM)and cytosol(pHLC)were incubated with racemic benoxacor for up to *** chromatographic analyses were used to measure the enantioselective depletion of *** with and without nicotinamide adenine dinucleotide phosphate(NADPH,co-factor for cytochrome P450 enzymes[CYPs])and pHLC with glutathione(GSH,co-factor for glutathione Stransferases[GSTs])metabolized *** results demonstrate that microsomal CYPs,microsomal carboxylesterase(CESs),and cytosolic GSTs metabolize *** were predicted to have a higher clearance of benoxacor by GSTs than *** and female pHLM incubations with NADPH showed enrichment of the first eluting benoxacor enantiomer(E1-benoxacor).pHLM incubations without NADPH and pHLC incubations with GSH showed an enrichment of the second eluting enantiomer of benoxacor(E2-benoxacor).Our results indicate that human hepatic microsomal and cytosolic enzymes enantioselectively metabolize benoxacor,a fact that needs to be considered when investigating human exposures and toxicities of benoxacor.

关键词： cor metabolism depletion

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Biogas Generation from the High-Strength Fresh Leachate using Anaerobic Continuous Stirred-tank Reactor

Biogas Generation from the High-Strength Fresh Leachate usin...

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2022 International Conference and Utility Exhibition on Energy, Environment and Climate Change, ICUE 2022

作者： Sutthiprapa, Sakulrat Towprayoon, Sirinthornthep Chaiprasert, Pawinee Chiemchaisri, Chart Wangyao, Komsilp The Joint Graduate School of Energy and Environment King Mongkut's University of Technology Bangkok Thonburi Thailand Biotechnology Program School of Bioresources and Technology Bangkhunthian Bangkok10150 Thailand Kasetsart University Faculty of Engineering Department of Environmental Engineering Bangkok10900 Thailand

ISBN: (纸本)9798350333268

Lab-scale anaerobic continuous stirred-tank reactor (CSTR) treating fresh leachate from solid waste transfer station was operated by varying organic loading rate (OLR) from 1 to 20 ***/m3.d. The fresh leachate contains chemical oxygen demand (COD) of 100,184 mg/l, BOD5 of 71,000 mg/l., and pH of 3.00-4.36. During the operation of CSTR, organic (COD) removal efficiency was 75-80%. When OLR increased to 15 ***/m3.d, the presence of volatile fatty acid (TVA) became unstable. The organic content in sludge was found varied in the range of 0.45-0.75. Average biogas production in the CSTR was 58.55 L/d with highest methane content of 68 % achieved at an OLR of 10 ***/m3.d. This study demonstrates a possibility of treating high-strength fresh leachate in single-stage CSTR for energy recovery. © 2022 IEEE.

关键词： Municipal solid waste

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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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Editorial

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Journal of Scheduling 2006年第3期9卷 199-201页

作者： Bard, Jonathan F. Barnhart, Cynthia Graduate Program in Operations Research The University of Texas Austin USA Civil & Environmental Engineering and Engineering Systems Massachusetts Institute of Technology Cambridge USA

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A new method for obtaining geoidal undulations through Artificial Neural Networks 7

A new method for obtaining geoidal undulations through Artif...

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7th International Symposium on Spatial Accuracy Assessment in Natural Resources and environmental Sciences, ACCURACY 2006

作者： Veronez, Maurício Roberto Thum, Adriane Brill De Souza, Genival Côrrea Graduate Program in Geology - Vale Do Rio Dos Sinos University Avenida Unisinos 950 São Leopoldo/RSCEP: 93022-000 Brazil Graduate Program in Civil and Environmental Engineering Feira de Santana State University Campus Universitário Br 116 - Km 03 Feira de Santana/BACEP:44031-460 Brazil

ISBN: (纸本)9728867271

The height supplied by the GPS system is merely mathematics. In most studies the height shall be referred to the Geoid. With a sufficient number of Level References with known horizontal and vertical coordinates it is almost always adjusted by polynomials of Least Squares Method that allow the interpolation of geoidal undulations. These polynomials are inefficient when extrapolating the data outside the study area. Thus the aim of this work is to present a new method for modeling the surface of Local Geoid based on the technique of Artificial Neural Networks. The study area is the Hydrological Basin of Rio dos Sinos which is located in Rio Grande do Sul State -Brazil and for the training of the neural network undulations data supplied by the MAPGEO2004 program was used. The program was developed by the Instituto Brasileiro de Geografia e Estatística (Brazilian Institute of Geography and Statistics) with an absolute error band bigger than 0.5 meter. Even with such a big error, the data supplied by MAPGEO2004 can be used in the training of a neural network, because it is tolerant to errors and noises. The efficiency of the model was tested in 8 points with known undulations and distributed throughout the study area. On these points the model has presented, through calculated discrepancies, a root mean square error of 0.170 meter, approximately. The study shows that this method can be an alternative in modeling local and/or regional Geoid.

关键词： Neural networks

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Relationship between drought and soil erosion based on the normalized differential water index(NDWI)and revised universal soil loss equation(RUSLE)model

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Regional Sustainability 2024年第4期5卷 133-144页

作者： Muhammad RENDANA Wan Mohd Razi IDRIS Febrinasti ALIA Supli Effendi RAHIM Muhammad YAMIN Muhammad IZZUDIN Department of Chemical Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Environmental Management Graduate SchoolUniversitas SriwijayaPalembang30139Indonesia Department of Earth Sciences and Environment Faculty of Science and TechnologyUniversiti Kebangsaan MalaysiaBangi43600Malaysia Department of Civil Engineering Faculty of EngineeringUniversitas SriwijayaIndralaya30662Indonesia Master Program of Agricultural Sciences Graduate Study ProgramUniversitas Muhammadiyah PalembangPalembang30263Indonesia Department of Agribusiness Faculty of AgricultureUniversitas SriwijayaIndralaya30662Indonesia Department of Sociology Faculty of Social and Political SciencesUniversitas SriwijayaIndralaya30662Indonesia

The Langat River Basin in Malaysia is vulnerable to soil erosion risks because of its exposure to intensive land use activities and its topography,which primarily consists of steep slopes and mountainous ***,climate change frequently exposes this basin to drought,which negatively affects soil and water ***,recent studies have rarely shown how soil reacts to drought,such as soil ***,the purpose of this study is to evaluate the relationship between drought and soil erosion in the Langat River *** analyzed drought indices using Landsat 8 satellite images in November 2021,and created the normalized differential water index(NDWI)via Landsat 8 data to produce a drought *** used the revised universal soil loss equation(RUSLE)model to predict soil *** verified an association between the NDWI and soil erosion data using a correlation *** results revealed that the southern and northern regions of the study area experienced drought *** predicted an average annual soil erosion of approximately 58.11 t/(hm^(2)·a).Analysis of the association between the NDWI and soil erosion revealed a strong positive correlation,with a Pearson correlation coefficient of *** assumed that the slope length and steepness factor was the primary contributor to soil erosion in the study *** a result,these findings can help authorities plan effective measures to reduce the impacts of drought and soil erosion in the future.

关键词： Drought Soil erosion Normalized differential water index(NDWI) Revised universal soil loss equation(RUSLE) Langat River Basin

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Influence of CDW Recycled Aggregate on Drying Shrinkage of Mortar

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Open Journal of Civil engineering 2012年第2期2卷 53-57页

作者： Paulo Roberto Lopes Lima Monica Batista Leite Civil and Environmental Engineering Post-Graduate Program State University of Feira de Santana Feira de Santana Bahia Brazil

The use of fine recycled aggregates as raw material in the production of mortars appears as a good alternative to minimize waste disposal, so as to reduce natural resources consumption and to find and supply suitable substitutes for natural aggregates. However, the use of this alternative material in a safe way must be carried out by a wide investigation of its long term behavior. In this way, this paper will examine the mechanical strength, physical properties and drying shrinkage of mortar, which use recycled fine aggregates that have originated from construction and demolition waste (CDW) containing mortar (55%), ceramic (26%) and concrete (16%). Two natural mortars, made with natural sand, were produced with cement/sand ratios of 1:4 and 1:8 (by weight) and a fixed consistency index of 260 +10 mm. Recycled mortar was produced with 50% of substitution rate, in volume, of natural aggregate by recycled one. Results show that recycled mortars present higher total porosity, absorption rate and drying shrinkage than reference mortar.

关键词： Recycled Mortar Construction and Demolition Waste Drying Shrinkage Recycled Aggregate

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NANOOS-Pilot: A collection of ocean observing tools for improving ocean safety and coastal design

NANOOS-Pilot: A collection of ocean observing tools for impr...

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113th Annual ASEE Conference and Exposition, 2006

作者： Haller, Merrick Baptista, Antonio Oregon State University United States Ocean Engineering Program Department of Civil and Construction Engineering Oregon State University United States Oregon Health and Science University United States Center for Coastal and Land-Margin Research Department of Environmental Science and Engineering Oregon Graduate Institute United States

The NANOOS-Pilot project (Northwest Association of Networked Ocean Observing Systems) is an ongoing effort to develop coastal ocean observing assets for the integrated observation of the estuaries and shorelines of the Pacific Northwest. The project is actively building nowcast and predictive capabilities for this environment, as well as interactive access to archival data, real-time data, and selected forecasts. In addition to the potential benefits accrued to the many sectors that depend upon the coastal waters of the Pacific Northwest, there are a number of education opportunities related to ocean observatories involving undergraduate and graduate institutions, K-12 schools and adult literacy programs. In this work, we describe some ocean technology applications of the NANOOS-Pilot and focus on the educational use of the system in a senior-level Civil engineering course on Coastal Infrastructure. © American Society for engineering Education, 2006.

关键词： Ocean engineering

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Microscopic Investigation on Interfacial Transition Zone in Fly Ash Cement Hydrates Using Roof-Tile Waste Aggregate 2nd

Microscopic Investigation on Interfacial Transition Zone in ...

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2nd International Conference on Sustainable Civil engineering and Architecture, ICSCEA 2021

作者： Okamoto, Kazuma Huynh, Phat Tan Ogawa, Yuko Kawai, Kenji Civil and Environmental Engineering Program Graduate School of Advanced Science and Engineering Hiroshima University 1-4-1 Kaganiyama Higashihiroshima Japan Depertment of Civil and Environmental Engineering Graduate School of Engineering Hiroshima University 1-4-1 Kaganiyama Higashihiroshima Japan 268 Ly Thuong Kiet Street District 10 Ho Chi Minh Viet Nam Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District Ho Chi Minh Viet Nam

ISBN: (纸本)9789811933028

Previous studies reported that the strength reduction in fly ash concrete (FAC) can be improved by internal curing with roof-tile waste aggregate (RWA). However, how much the internal curing by RWA improved the compressive strength of FAC was different, and there was no clear explanation on it. The purpose of this study is to clarify the effect of the internal curing in the FAC by examining the range of the internal curing effect with RWA in the interfacial transition zone (ITZ) around coarse aggregate. Paste and concrete specimens in which part of cement was replaced with fly ash were prepared. For paste specimens, one aggregate particle was placed in the center of the specimen. Vickers hardness around the aggregate in the paste specimen and the compressive strength of the concrete specimen were investigated. As a result, the range of Vickers hardness improvement around RWA changed depending on the replacement ratio of fly ash. This indicates that the internal curing effect differs depending on the mixture proportion of paste matrix such as the replacement ratio of fly ash. Furthermore, it was observed that the compressive strength of concrete increased as the thickness of ITZ around RWA decreased. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Compressive strength

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Design and delivery of a graduate-level project management course for experienced engineering professionals: Collaborative, applied learning for distributed teams

Design and delivery of a graduate-level project management c...

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2008 ASEE Annual Conference and Exposition

作者： Pferdehirt, Wayne Russell, Jeffrey Nelson, John Shenot, Amy University of Wisconsin Madison United States Graduate Distance Degree Programs College of Engineering Dept. of Engineering Professional Development Department of Civil and Environmental Engineering Construction Engineering and Management Program University of Wisconsin Madison United States ASCE Committee on Academic Prerequisites for Professional Practice Engineering Professional Development University of Wisconsm Madison United States

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