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Prospecting toxicity of the avobenzone sunscreen in plants

environmental Science and Pollution Research 2024年第31期31卷 44308-44317页

作者： Beijora, Sara Splendor Vaz, Thalia Aparecida Correia Santo, Diego Espirito de Almeida, Edson Araújo Junior, Osvaldo Valarini Parolin, Mauro da Silva Gonzalez, Regiane de Souza, Débora Cristina Peron, Ana Paula Chemical Engineering Course Federal Technological University of Paraná Campo Mourão Paraná Brazil Graduate Program in Environmental Engineering Federal Technological University of Paraná Paraná Francisco Beltrão Brazil Graduate Program in Chemistry State University of Maringá Paraná Maringá Brazil Academic Department of Food and Chemical Engineering Federal Technological University of Paraná Paraná Campo Mourão Brazil Graduate Program in Geography State University of Maringá Paraná Maringá Brazil Graduate Program in Food Technology Federal Technological University of Paraná Paraná Campo Mourão Brazil Graduate Program in Water Resources and Environmental Engineering Federal University of Paraná Paraná Brazil Graduate Program in Technological Innovations Federal Technological University of Paraná Via Rosalina Maria Dos Santos 1233 Paraná Campo Mourão87.301-899 Brazil

Avobenzone (AVO) is a sunscreen with high global production and is constantly released into the environment. Incorporating sewage biosolids for fertilization purposes, the leaching from cultivated soils, and the use of wastewater for irrigation explain its presence in the soil. There is a lack of information about the impact of this sunscreen on plants. In the present study, the ecotoxicity of AVO was tested at concentrations 1, 10, 100, and 1,000 ng/L. All concentrations caused a reduction in root growth of Allium cepa, Cucumis sativus, and Lycopersicum esculentum seeds, as well as a mitodepressive effect, changes in the mitotic spindle and a reduction in root growth of A. cepa bulbs. The cell cycle was disturbed because AVO disarmed the enzymatic defense system of root meristems, leading to an accumulation of hydroxyl radicals and superoxides, besides lipid peroxidation in cells. Therefore, AVO shows a high potential to cause damage to plants and can negatively affect agricultural production and the growth of non-cultivated plants. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Cell proliferation

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Assessing snow extent variations of Illimani mountain with Landsat NDSI 37

Assessing snow extent variations of Illimani mountain with L...

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37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017

作者： Centeno, Jorge Antonio Silva Mitishita, Edson Aparecido Kishi, Regina Tiemy Federal University of Paraná Graduate Course in Geodetic Sciences Brazil Federal University of Paraná Graduate Program in Water Resources and Environmental Engineering Caixa Postal 19001 Curitiba Parana81.531-990 Brazil

ISBN: (纸本)9781509049516

Snow in the mountains is important because it keeps freshwater resources and supplies water for agriculture and human consumption. One of the most well-known mountains in Bolivia is the Illimani. In this paper the results of a multitemporal analysis of the snow cover at the Illimani are shown. Therefore, Landsat imagery of two years, 2010, and 1016 is presented. Snow cover is estimated from Landsat imagery using image processing and a snow-index. The temporal variation along a year is also compared to historical records. The results showed the seasonal variation of the snow cover area and that the glacier area is reducing. © 2017 IEEE.

关键词： Three-dimensional displays High definition video

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The determinants of divalent/monovalent selectivity in anion exchangers

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Reactive Polymers, Ion Exchangers, Sorbents 1983年第2期1卷 77-89页

作者： Clifford, Dennis Weber Jr., Walter J. Environmental Engineering Program Cullen College of Engineering University of Houston Houston TX 77004 United States Water Resources Engineering Program University of Michigan Ann Arbor MI 48105 United States

This research demonstrates that it is the distance of fixed-charge separation in the resin which is the primary determinant of divalent/monovalent selectivity. Anion resins, particularly acrylics and epoxies, with closely spaced N-containing (amine) functional groups are inherently divalent-ion selective. This is because the uptake of a divalent anion, e.g. sulfate, requires the presence of two closely-spaced positive charges. Results from this study of 30 commercially-available, strong- and weak-base, anion resins indicate that in order to bring positive charges into close proximity within a resin one can: (1) incorporate the amine functional groups into the polymer chains as opposed to having them pendant on the chains;(2) minimize the size and number of organic ("R") groups attached to the N atom, i.e., minimize the size of the amine;and (3) maximize the resin flexibility, i.e., its ability to reorient to satisfy divalent counterions, by minimizing the degree of crosslinking. The distance-of-charge-separation theory is not restricted to divalent anion exchangers but also applies to cation exchangers and to polyvalent ions in general. © 1983.

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Deep Neural Networks for ENSO Prediction in the Niño 3.4 and Niño 1+2 Regions

Deep Neural Networks for ENSO Prediction in the Niño 3.4 an...

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World environmental and water resources Congress 2023: Adaptive Planning and Design in an Age of Risk and Uncertainty

作者： Gomez-Tunque, Kennedy Richard Ingol-Blanco, Eusebio Mejia-Marcacuzco, Abel Chávarri-Velarde, Eduardo Pino-Vargas, Edwin Graduate Program in Water Resources Engineering School of Civil Engineering Universidad Nacional de Huancavelica Lima Peru Graduate Program in Water Resources Engineering Universidad Nacional Agraria la Molina Lima Peru Dept. of Civil Engineering Universidad Nacional Jorge Basadre Grohmann Tacna Peru

ISBN: (数字)9780784484852

ISBN: (纸本)9780784484852

Forecasting the El Niño-Southern Oscillation (ENSO) is one of the most challenging tasks because ENSO events show large differences in their amplitude, temporal evolution, and spatial pattern. This research discusses a deep neural network model that integrates convolutional short-term and long-term memory (ConvLSTM) to forecast the patterns of sea surface temperature that represent the evolution of ENSO over different time horizons with simultaneous space-time sequences in the Niño 3.4 and Niño 1+2 regions. Monthly gridded sea surface temperature and anomaly index data were used in El Niño regions for the period 1854-2021. In general, the methodology includes the sea surface temperature (SST) normalization of the tropical Pacific, the creation and selection of the architecture of the deep neural network model, and the training and validation. Furthermore, the forecast and evaluation of the SST and SST anomalies in space-time with the El Niño of 1982/1983 and 1997/1998 and with different time horizons for the test stage were developed. The results show a good model performance with ENSO data for El Niño 1982/1983 (training) and El Niño 1997/1998 (validation) in space and time, and with climatic indices for regions 3.4 and 1+2. The model performance was evaluated using statistical metrics of observed and forecasted data over six months in the equatorial Pacific Ocean (latitude 10°S-10°N and longitude 140°E-80°W). In general, all the metrics used to evaluate the accuracy and forecast of the model show a range from good to excellent for both El Niño regions in the six months of forecast. © World environmental and water resources Congress *** rights reserved

关键词： Surface temperature

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Lateral stability of sandbed canals

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water resources Management 1987年第2期1卷 131-141页

作者： Mahmood, K. Budhu, D. Bekele, J. Mechanical and Environmental Engineering Department Water Resources Program George Washington University Civi Washington D.C. 20052 United States

The lateral stability of unlined sandbed irrigation canals is a problem in the operation and maintenance of gravity irrigation systems. This problem has been studied from the aspect of meandering thalwegs that develop in otherwise straight channels. Hydrodynamic stability analysis of two-dimensional flow in sandbed channels has been used to predice the conditions under which meandering thalwegs will develop and lead to lateral instability. The analytical study shows that, with realistic functions for hydraulic resistance and bedload transport used herein, the two parameters which determine if meandering thalwegs will develop are the discharge intensity, q and channel width W. Results of analysis are confirmed by extensive data, especially collected for this purpose from straight irrigation canals in Pakistan. This study leads to criteria for stable channel width. © 1987 D. Reidel Publishing Company.

关键词： Canals meandering rivers sandbed channel thalweg

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2D numerical simulation of urban dam break and its effect to building using lax scheme with numerical filter 4

2D numerical simulation of urban dam break and its effect to...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Maitsa, Tias Ravena Indra Mardika, M Gilang Bagus Adityawan, Mohammad Harlan, Dhemi Kusumastuti, Dyah Adi Kuntoro, Arno Graduate School of Civil Engineering Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Water Resources Engineering and Management Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Water Resources Engineering Research Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Structural Engineering Research Group Faculty of Civil and Environmental Engineering Institut Teknologi Bandung Indonesia Center for Water Resources Development Institut Teknologi Bandung Indonesia

Dam-break is one of the disasters that can occurred due to earthquake. The earthquake vibration may damage the dam construction and therefore causing a dam-break flow. The flow can cause severe destruction to the downstream urban area. Dam-break modeling offers a way to analyze its effect of buildings. In this study, a 2D model for analyzing dam break flow is developed based on the Saint Venant equations and solved using Lax Scheme. The initial condition of the modelling is a rectangular channel with obstacles at both sides of the channel and two similar columns in the middle of the channel. These obstacles are considered as buildings in an urban area. Numerical filter is used to increase the stability of the simulation. The developed model is able to perform well in simulating a case of urban dam-break based on a previous experiment. In addition, the applied numerical filter is able to handle shock, therefore maintaining the stability of the model while reducing the simulation time without the needs to use a higher order numerical scheme. © 2020 The Authors, published by EDP Sciences.

关键词： Earthquakes

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Methanation and chemolitrophic nitrogen removal by an anaerobic membrane bioreactor coupled partial nitrification and Anammox

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Frontiers of environmental Science & engineering 2023年第6期17卷 37-47页

作者： Qian Li Zhaoyang Hou Xingyuan Huang Shuming Yang Jinfan Zhang Jingwei Fu Yu-You Li Rong Chen Key Laboratory of Environmental Engineering of Shaanxi Province Xi'an University of Architecture and TechnologyXi'an 710055China Department of Civil and Environmental Engineering Graduate School of EngineeringTohoku UniversitySendai Miyagi 980-8579Japan International S&T Cooperation Center for Urban Alternative Water Resources Development Key Laboratory of Northwest Water ResourceEnvironment and Ecology(Ministry of Education)Xi'an University of Architecture and TechnologyXi'an 710055China

An AnMBR-PN/A system was developed for mainstream sewage *** verify the efficient methanation and subsequent chemolitrophic nitrogen removal,a long-term experiment and analysis of microbial activity were carried *** performance was less affected by the change of hydraulic retention time(HRT),which could provide a stable influent for subsequent PN/A *** COD removal efficiency of AnMBR was>93%during the experiment,85.5%of COD could be recovered in form of *** the HRT of PN/A being shortened from 10 to 6 h,nitrogen removal efficiency(NRE)of PN/A increased from 60.5%to 80.4%,but decreased to 68.8%when the HRTPN/A further decreased to 4 *** analysis revealed that the highest specific ammonia oxidation activity(SAOA)and the ratio of SAOA to specific nitrate oxidation activity(SNOA)provide stable NO_(2)^(−)-N/NH_(4)^(+)-N for anammox,and anammox bacteria(mainly identified as Candidatus Brocadia)enriched at the bottom of Anammox-UASB might play an important role in nitrogen *** addition,the decrease of COD in Anammox-UASB indicated partial denitrification occurred,which jointly promoted nitrogen removal with anammox.

关键词： Anaerobic membrane bioreactor Partial nitrification/Anammox Carbon separation Chemolitrophic nitrogen removal

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Biofiltration of BTEX: Media, substrate, and loadings effects

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environmental PROGRESS 1995年第3期14卷 151-158页

作者： Corsi, RL Seed, L 1Environmental and Water Resources Engineering Program Department of Civil Engineering (ECJ 8.6) The University of Texas at Austin Austin Texas 787122School of Engineering University of Guelph Guelph Ontario Canada N1G 2W1

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Hydrology of Disasters 1

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丛书名： water Science and Technology Library

1000年

作者： Vijay P. Singh

ISBN: (数字)9789401586801

ISBN: (纸本)9780792340928;9789048147151

The General Assembly of the United Nations passed a resolution on December 11, 1987, designating the 1990s as the International Decade for Natural Disaster Reduction. This resolution has served as a catalyst in promotion of international cooperation in the field of natural disaster reduction; in initiation of wide-ranging research activities on natural and man-made disasters; in development of tech nologies for assessment, prediction, prevention, and mitigation through technical assistance, technology transfer, demonstration projects, and education and training; and in dissemination of information related to measures for assessment, prediction, prevention, and mitigation of natural disasters. Disasters are manifestations of environmental extremes. Depending upon the type of disasters, their occurrence may have short-term andlor long-term detri mental environmental consequences. Disasters cannot be prevented altogether, but their impact can be mitigated. This book is an attempt to provide a discussion of hydrological aspects of the various types of natural disasters. It is hoped that others will be stimulated to write more comprehensive texts on this subject of enormous importance.

关键词： Hydrogeology environmental Management Atmospheric Sciences

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Would the occurrence of a Maunder-like solar minimum reverse the observed climate change?

Evolving Earth

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Evolving Earth 2025年 3卷

作者： Marcio Cataldi Rafael Rangel Vitor Luiz Victalino Galves Sonia Jerez Juan Pedro Montávez Amar Halifa-Marín Luiz Landau Regional Atmospheric Modelling Group (MAR) Physics of the Earth Department of Physics Regional Campus of International Excellence (CEIR) “Campus Mare Nostrum” University of Murcia Spain Climate System Monitoring and Modelling Laboratory (LAMMOC) Water Resources and Environmental Engineering Federal Fluminense University Brazil Laboratory of Computational Methods in Engineering (LAMCE) Civil Engineering Program Alberto Luiz Coimbra Institute for Graduate Studies and Research in Engineering Federal University of Rio de Janeiro Rio de Janeiro Brazil

This study examines a scenario combining a prolonged solar minimum, like the historical Maunder Minimum, with the increased CO2 emissions characteristic of the industrial era. Two scenarios were developed in NCAR/CESM 2.0 implemented at LAMMOC/UFF to create simulations from 1850 to 2000, it contrasts differing radiative forcings from 1950 onward—one reflecting actual observed changes, including rising CO2 levels, and the other simulating a decrease in solar output like that during the Maunder Minimum but with continued CO2 growth. The results were validated against ERA5 data and 20th-century reanalysis. By calculating meridional averages at 30-degree latitude intervals, distinct regional impacts of the Maunder Minimum were identified. Notably the simulated Maunder Minimum reduced global warming by and even mitigated 70 % in HS in the last decade of the 20th century. However, this attenuation was lower in the HN, especially in the 30–60N region where no attenuation was observed.

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