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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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Graphene oxide-based nanohybrids incorporated in nanofiltration and reverse osmosis membranes for desalination and dye separation:a review

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Frontiers of Materials Science 2024年第4期18卷 21-42页

作者： Iluska Marques Santos Carlos Alberto Caldas de Souza Graduate Program in Chemical Engineering(PPEQ) Universidade Federal da BahiaSalvadorBahiaBrazil

Novel advanced nanocomposites formed by associating graphene oxide(GO)nanosheets with other nanomaterials such as titanium dioxide nanoparticles,cellulose nanofibers,cellulose nanocrystals,and carbon nanotubes were incorporated in nanofiltration(NF)and reverse osmosis(RO)membranes for wastewater treatment and ***-based nanocomposite has promising potential in membrane technology due to its high hydrophilicity,absorption capacity,good dispersibility in water and organic solvents,anti-biofouling properties,and negative ***,additional properties can be obtained depending on the nanohybrid *** review paper highlights the recent breakthrough in membranes functionalized with GO-based nanohybrids,focusing on membrane performance in terms of permeability,selectivity,and antifouling *** GO-based nanohybrids have made significant progress in membrane technology,improvements are still needed,especially regarding trade-off ***,the studies presented here are limited to laboratory scale,which leads to suggestions for new studies evaluating the possibility of commercial application and the potential environmental impact caused by nanocomposites.

关键词： graphene oxide-baseddnanohybrid membraneperformance nanofiltration reverseosmosis

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Toxicity of the emerging pollutants propylparaben and dichloropropylparaben to terrestrial plants

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Environmental Science and Pollution Research 2024年第33期31卷 45834-45846页

作者： Okon, Caio Rocha, Mylena Bathke de Souza Ratuchinski, Lizandra Santo, Diego Espirito Duarte, Charla Chaionara Schults de Lima Feitoza, Lidiane Junior, Osvaldo Valarini Ferreira, Paulo Michel Pinheiro de Almeida, Edson Araújo Halmemam, Maria Cristina Oliveira dade SilvaOliveira, Danielle Cristina da Silva Gonzalez, Regiane de Souza, Débora Cristina Peron, Ana Paula Chemical Enginnering Course Federal Technological University of Paraná Paraná Campo Mourão Brazil Graduate Program in Environmental Engineering Federal Technological University of Paraná Paraná Francisco Beltrão Brazil Academic Department of Biological Sciences Federal University of Piauí Piauí Teresina Brazil Academic Department of Food and Chemical Engineering Federal Technological University of Paraná Paraná Campo Mourão Brazil Academic Department of Biophysics and Physiology Federal University of Piauí Piauí Teresina Brazil Graduate Program in Chemistry State University of Maringá Paraná Maringá Brazil Department of Biodiversity and Nature Conservation Federal Technological University of Paraná Paraná Campo Mourão Brazil Academic Department of Chemistry Federal Technological University of Paraná Paraná Campo Mourão 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 Paraná Campo Mourão1233 Brazil

Propylparaben (PrP) and dichloropropylparaben (diClPrP) are found in soil worldwide, mainly due to the incorporation of urban sludge in crop soils and the use of non-raw wastewater for irrigation. Studies on the adverse effects of PrP on plants are incipient and not found for diClPrP. PrP and diClPrP were evaluated at concentrations 4, 40, and 400 µg/L for their phytotoxic potential to seeds of Allium cepa (onion), Cucumis sativus (cucumber), Lycopersicum sculentum (tomato), and Lactuca sativa (lettuce), and cytotoxic, genotoxic potential, and for generating oxygen-reactive substances in root meristems of A. cepa bulbs. PrP and diClPrP caused a significant reduction in seed root elongation in all four species. In A. cepa bulb roots, PrP and diClPrP resulted in a high prophase index;in addition, PrP at 400 µg/L and diClPrP at the three concentrations significantly decreased cell proliferation and caused alterations in a significant number of cells. Furthermore, diClPrP concentrations induced the development of hooked roots in onion bulbs. The two chemical compounds caused significant changes in the modulation of catalase, ascorbate peroxidase, and guaiacol peroxidase, disarming the root meristems against hydroxyl radicals and superoxides. Therefore, PrP and diClPrP were phytotoxic and cytogenotoxic to the species tested, proving dangerous to plants. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Oxygen

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Rheological and stability analysis of cement pastes incorporating silica-based wastes

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Particuology 2024年第6期89卷 144-152页

作者： Julia da Rosa Martins Janaíde Cavalcante Rocha Dachamir Hotza Luciano Senff Graduate Program in Materials Science and Engineering(PPGMAT) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Graduate Program in Civil Engineering(PPGEC) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Graduate Program in Chemical Engineering(POSENQ) Federal University of Santa Catarina(UFSC)Florianópolis88040-900SCBrazil Department of Mobility Engineering Federal University of Santa Catarina(UFSC)Joinville89219-600SCBrazil

This study investigates the influence of waste characteristics,especially zeta potential,on the properties of cement pastes and *** focus is to evaluate the impact of the zeta potential of cement particles and waste materials on the sedimentation speed,rheology,and hardening time of stabilized cement *** Cement II F 40,retarder additive,silica,and fly ash were used in the *** pastes were prepared,and during the stabilization period,their rheological properties and pH were *** zeta potential and sedimentation speed of the cement and waste particles were measured at the pH that the pastes presented during the entire stabilization *** the stabilization period,the pastes were subjected to the hardening time *** zeta potential analyses revealed diverse values for the different powder types,with the cement particles exhibiting a zeta potential of−3.0 mV,the silica particles exhibiting−10.5 mV,and the fly ash particles exhibiting−20.3 *** influence of the high zeta potential modulus was observed on the sedimentation speed,with the solution containing fly ash exhibiting a speed of 40.01μm/s,whereas the solution containing only cement exhibited a speed of 99.38μm/*** the pastes,the results indicate that the presence of fly ash particles with a significantly negative zeta potential led to a 16%reduction in hardening time compared to particles with a lower modulus of zeta *** tests showed that the inclusion of fly ash particles prevented the formation of *** the zeta potential influenced agglomerate formation and hardening time,it was found to have no effect on yield stress or viscosity.

关键词： Wastes Zeta potential Setting time Rheometry

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Features of Computerized Systems for the Management of Medical-Hospital Equipment in Clinical engineering Departments in Brazil 9th

Features of Computerized Systems for the Management of Medic...

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9th Latin American Congress on Biomedical engineering, CLAIB 2022 and 28th Brazilian Congress on Biomedical engineering, CBEB 2022

作者： Rosa, Perseu Filho Barros, Frieda Saicla Graduate Program in Biomedical Engineering Federal Technological University of Paraná Curitiba Brazil

ISBN: (纸本)9783031494093

The rapid evolution and complexity of medical-hospital equipment (EMH), as well as the appearance of adverse events that had not occurred until then, resulted, in the United States, in the emergence of the area of activity called Clinical engineering (CE). In Brazil, although the profession does not have its proper recognition and regulation, the need for a qualified and designated professional to manage health technologies, within a Health Care Facility (EAS), has been increasingly evident. To manage these technologies, in addition to being mandatory, is the responsibility of each Hospital, requiring dedication and control. The use of computerized systems (SI), aiming at successful management of health technologies, including the preparation of inventories and control of technical intervention events (e.g., maintenance), has been consolidated. Despite having available in the market diversified software intended for the realization of maintenance management, notoriously, the foundation, structuring and functionality of these, are convergent. The present work aimed to list, through bibliographic references, parameters and essential functions, which should make up an SI for the management of EMH, applied in the Departments of CE in Hospital Units. Thus, through the study carried out, it was observed that a software for this purpose can be divided into four main modules: Module of registrations, EMH inventory, service orders (maintenance) and, reports/indicators. Finally, given the functionalities identified in the analyzed SI, it is suggested to conduct new studies related to the incorporation of specific tools and functionalities, aimed at CE in Brazil. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Hospitals

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Replacing diesel with biogas in decentralized electricity generation systems: a feasibility assessment from workers’ perspective with a modified Human Development Index (HDI) approach

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Socio-Ecological Practice Research 2024年第3期6卷 263-281页

作者： da Silva Miranda, Denis de Araujo, Jaylton Bonacina Kulay, Luiz Chemical Engineering Department Polytechnic School University of São Paulo (USP) São Paulo Brazil Graduate Program in Urban Environmental Sustainability (PPGSAU) Federal Technological University of Paraná (UTFPR) Curitiba Brazil

Despite Brazil's high electricity universalization rates, around 1 million Amazon inhabitants need access to this service. An environmentally sustainable way of solving the problem is using biogas from agricultural residues as fuel for electricity cogeneration. This study explores the social effects of this solution, aiming to support more sustainable development for the Brazilian Amazon based on the conscious use of resources and the active involvement of the local population. We compare the social performance of diesel electricity generation (the current scenario) with that of biogas-operated systems for three locations in the Amazon: Aveiro, Porto de Moz, and Prainha. To this end, the following steps were carried out: (i) characterize the analysis scenarios, (ii) determine the personnel associated with each project, (iii) estimate normalized social performance indices considering aspects such as health, education, and income, for the calculation of the Workers' Human Development Index (W-HDI) in different situations, and (iv) analyze the results and formulate a recommendation. The disparities between W-HDI values for the renewable and non-renewable scenarios were less than 10%, even though a slightly better effect concerning diesel systems was observed for Aveiro and Prainha. Conversely, a local biogas energy generation system can generate up to 6 times more wages and 5.5 times more jobs, exhibiting a great potential to reduce social inequalities in these traditionally poor regions. The W-HDI proved a valuable metric for measuring social impacts for a sector devoid of data like the one analyzed herein. © The Author(s), under exclusive licence to Springer Nature Singapore Pte Ltd. 2024.

关键词： Amazon Biogas Energy production Human Development Index Social life cycle assessment Workers

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Valorization of the agro-industrial by-products of bacupari(Garcinia brasiliensis(Mart.))through production of flour with bioactive properties

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Food Bioscience 2022年第1期45卷 377-385页

作者： Anely Maciel de Melo Rafaela Cristina Turola Barbi Bruno Patrício Costa Mˆonica Ikeda Danielle Carpine Rosemary Hoffmann Ribani Food Engineering Graduate Program Federal University of ParanaDepartment of Chemical Engineering81531-990CuritibaPRBrazil

Brazil has a wide variety of fruits that remain insufficiently *** encourage the use of one such fruit,the bacupari((Garcinia brasiliensis(Mart.)),the current study produced flours from its by-products(the peel and seed)at two maturation stages and subsequently evaluated their proximate composition,physical,antioxidant,bioactive,microstructural and thermal *** results revealed that the flours have a high in fiber content(>15%)and are a potential source of protein(>5%).Seed flour has an energy value similar to that of wheat flour and other conventional *** flour micrographs indicate the presence of starch,a fact confirmed by viscosity *** flours contain phenolic compounds and exhibit antioxidant activity,especially the unripe peel *** the compounds identified by chromatography,those present in the greatest concentrations were quinine(≅111μg/g),p-coumaric acid(≅25μg/g),m-coumaric acid(≅15μg/g),and formononetin(≅21μg/g),all of which are known to have several human health *** flour crystallinity diminished as the fruit *** flour exhibited similar thermal transitions but less thermal stability than seed *** summary,this study revealed that flours produced from the peel and seeds of bacupari,which are generated in large quantities as agro-industrial by-products,can be used as alternative ingredients in various sectors of the food industry.

关键词： Antioxidant activity Bacupari fruit Seed Peel Phenolic compounds

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Production and characterization of polymeric nanocomposite foams based on starch and cellulose nanofibers from oil palm mesocarp fiber

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Applied Nanoscience (Switzerland) 2025年第2期15卷 1-11页

作者： Souza, Mariana Costa Gonçalves, Ana Paula Bispo da Silva Oliveira, Emanoel Igor dos Santos, Juscivaldo Passos Lazzari, Lídia Kunz Zattera, Ademir José José, Nadia Mamede Chemical Engineering Graduate Program Polytechnic School Federal University of Bahia Bahia Salvador Brazil Department of Education Federal Institute of Education Science and Technology Feira de Santana Bahia Brazil Postgraduate Program in Process Engineering and Technologies University of Caxias Do Sul Rio Grande Do Sul Caxias Do Sul Brazil

The demand for sustainable and eco-friendly materials has promoted studies over the years to explore different polymeric materials that meet requirements such as biodegradability and sustainability. In this context, biopolymer materials based on cellulose nanoparticles and starch from different botanical sources have been investigated, aiming to achieve satisfactory performance. The present study aims to develop and characterize cassava starch foams based on density, scanning electron microscopy (SEM), and three-point flexure tests, and to evaluate the effect of cellulose nanofibers obtained from palm mesocarp fibers using the ultrafine friction grinding method after different processing times, characterized by X-ray diffractometry (XRD), microscopy, and chemical composition, as a reinforcing filler. The chemical composition and scanning electron microscopy revealed the effectiveness of the cellulose isolation process, with the analysis of the chemical composition revealing a cellulose content of 55.70% in the fibers after pulping and bleaching, in addition to changes in the visual characteristics of the material after the process aimed at isolating the cellulose. After grinding, XRD showed an increase in crystallinity (76.1% at the maximum grinding time), along with typical microscopy images of cellulose nanofibers. The analysis of the obtained nanocomposites provided insights into the role of these nanostructures in the thermo-expanded starch matrix, indicating that the nanofibers promoted changes such as an increase in mechanical properties and crystallinity, which contributed to improving overall mechanical performance. A 67.48% increase in flexural strength was achieved for the formulation with cellulose nanofibers that underwent 150 min of grinding, without causing major variations in density. © King Abdulaziz City for Science and Technology 2025.

关键词： Starch

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Low-cost Fish-Based Soft Robot Development for Underwater Environment 15

Low-cost Fish-Based Soft Robot Development for Underwater En...

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15th IEEE International Conference on Industry Applications, INDUSCON 2023

作者： Barreto, Pedro S. Pinto, Milena F. Pereira, Gustavo D. Batista, José L. de O. Carneiro, Mirella M. Dias, João T. Almeida, Luciana F. Federal Center for Technological Education Celso Suckow da Fonseca Electrical Engineering Graduate Program - RJ Rio de Janeiro Brazil Federal University of Rio de Janeiro Electrical Engineering Program COPPE RJ Rio de Janeiro Brazil

ISBN: (纸本)9798350314182

Due to the ability to perform various maritime activities flexibly and reduce human life risks, Remotely Operated Underwater Vehicles (ROVs) are increasingly used in most offshore applications. The demand for more complex missions has increased the capabilities of ROVs in their operations. Because it is a robust and rigid system, this type of robot may not be effective in certain missions where monitoring in narrow and difficult-to-access places is required. The idea is to create a more flexible and compact three-degrees-of-freedom robot. This robot can help the offshore industry, marine biologists, and researchers in marine life investigation. The reason is that the prototype is more similar to a fish, which would avoid scaring the other specimens, thus not harming the environment. Therefore, this research project intends to develop a low-cost underwater robot modeling applied to an embedded system capable of monitoring information on the seafloor. The results are still preliminary, but they already indicate the possibility of inserting the system in a test environment closer to the real one. ©2023 IEEE.

关键词： Fish Robot Robotics Soft Robot Underwater Environment

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An Analysis of Carrier-Based Multilevel Modulation Strategies with Different Carrier Dispositions Applied to an Open-End Winding Power Converter 8

An Analysis of Carrier-Based Multilevel Modulation Strategie...

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8th Southern Power Electronics Conference and the 17th Brazilian Power Electronics Conference, SPEC / COBEP 2023

作者： Ramos, Herbert O. Torquato, Hugo R. Matos, Frederico F. V. Sousa, Clodualdo V. Mendes, Victor F. Universidade Federal de Minas Gerais Graduate Program in Electrical Engineering MG Belo Horizonte Brazil Technological Sciences Institute Universidade Federal de Itajubá campus Itabira MG Itabira Brazil

ISBN: (纸本)9798350321128

This paper presents an analysis of multilevel pulse width modulation techniques using different carrier dispositions applied to a three-level open-end-winding converter. This structure uses a pair of two-level back-to-back converters to feed the two sides of the load. The Phase Shifted (PS), Level Shifted with Phase Disposition (PD) and with Phase Opposition Disposition (POD) techniques are implemented in an experimental setup and analysis was performed based on the spectral content of the resulting voltages and currents. Finally, the total harmonic distortion was calculated from the data for the entire modulation range allowing for a proper comparison between strategies, evidencing the superior performance of the Phase Disposition technique. © 2023 IEEE.

关键词： Multilevel Converters Multilevel Modulation Techniques Open-End Winding

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