工程技术最新文献

{"title":"Unveiling spatiotemporal distribution, partitioning, and transport mechanisms of tire additives and their transformation products in a highly urbanized estuarine region.","authors":"Hai-Yan Zhang, Yue-Hong Liu, Li-Ni Wei, Rui-Qi Zhu, Jian-Liang Zhao, Shan Liu, Xiang-Rong Xu, Guang-Guo Ying","doi":"10.1016/j.scitotenv.2024.176804","DOIUrl":"10.1016/j.scitotenv.2024.176804","url":null,"abstract":"<p><p>Numerous tire additives are high-production volume chemicals that are used extensively worldwide. However, their presence and partitioning behavior remain largely unknown, particularly in marine environments. This study is the first to reveal the spatiotemporal distribution, multimedia partitioning, and transport processing of 22 tire additives and their transformation products (TATPs) in a highly urbanized estuary (n = 166). Nineteen, 18, and 20 TATPs were detectable in water, suspended particulate matter (SPM), and sediments, respectively, with total levels of 59.7-2021 ng/L, 164-6935 ng/g, and 4.66-58.4 ng/g, respectively. The multimedia partitioning mechanisms of TATPs are governed by their molecular weight, hydrophobicity, and biodegradation rate. Mass inventories coupled with model simulations have revealed that substantial quantities of TATPs accumulate within estuarine environments, and these compounds can be continuously transported into the ocean, particularly during the wet season. According to the multi-criteria evaluation approach, four and three TATPs were identified as high-priority pollutants during the dry and wet seasons, respectively. Unexpectedly, N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine quinone was only listed as a medium-priority pollutant. This study underscores the importance of marine surveillance and advocates for particular attention to these ubiquitous but underexplored TATPs in future studies.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176804"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142398923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Removal of perfluoroalkyl and polyfluoroalkyl substances from tap water by means of point-of-use treatment: A review.","authors":"Henry MacKeown, Emanuele Magi, Marina Di Carro, Barbara Benedetti","doi":"10.1016/j.scitotenv.2024.176764","DOIUrl":"10.1016/j.scitotenv.2024.176764","url":null,"abstract":"<p><p>Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are widely used synthetic chemicals known for their environmental persistence and adverse health effects. For this reason, they have come under increasing scrutiny in drinking water, with several groundbreaking drinking water regulations adopted recently in the US and the EU. Nevertheless, conventional treatment processes often fail to remove PFAS effectively, raising concerns about drinking water quality and consumer health. More advanced treatment processes can remove PFAS with varying success from drinking water treatment plants. Using similar technology to that used in centralized PFAS treatment, many types of point-of-use/point-of-entry (POU/POE) water treatment devices are also commercially available. Herein, an overview of the literature regarding POU/POE efficacy in the removal of PFAS from tap water was compiled and critically discussed. Generally, they employ treatment technologies like granular activated carbon, ion exchange, and reverse osmosis to remove PFAS contamination. Despite their laboratory testing and often certification for removal of perfluorooctanoic and perfluorooctanesulfonic acid and other PFAS in tap water, in most cases their efficacy in actual use has yet to be well characterized. In particular, inconsistent testing and insufficient real-life studies complicate assessments of their long-term performance, especially against short-chain PFAS. Furthermore, improperly maintained activated carbon systems might even raise PFAS levels in purified water. Only a few peer-reviewed studies have measured PFAS levels at the tap after POU/POE treatment, with just five assessing removal efficiency in real-life scenarios. Limited to the findings described, not all filters were demonstrated to be effective, especially against short-chain PFAS. Additionally, inconsistent testing methods that do not follow standard guidelines make it hard to compare filter results, and the long-term performance of these systems remains uncertain. More occurrence studies are essential to verify performance over time and understand exposure to these contaminants through water treated by household systems.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176764"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Solar roof tiles: Unleashing technical advantages and contribution to sustainable society.","authors":"Waqas Ahmed, Jamil Ahmed Sheikh, Tamas Kerekes, M A Parvez Mahmud","doi":"10.1016/j.scitotenv.2024.176818","DOIUrl":"10.1016/j.scitotenv.2024.176818","url":null,"abstract":"<p><p>A solar photovoltaic (PV) system is exposed to multiple environmental stresses such as bird droppings, soiling, and cast shadows during its operation, leading to the formation of hotspots. Traditional PV panels are equipped with a bypass diode to prevent system failure in the presence of such stresses. However, the failure of the bypass diode can lead to system failure and accelerated aging. In contrast, solar roof tiles (SRTs), due to their unique series-parallel configuration, are prone to hotspot creation and system failure, even in the absence of bypass diodes. This paper provides a critical analysis of SRTs, focusing on their technical benefits and potential for mitigating greenhouse gas (GHG) emissions. Using a Simulink model, the performance of a 1.5 kW SRT system is compared with a traditional PV system under various environmental conditions, including standard testing conditions and scenarios where cells are completely or partially shaded. The study concluded that in a 1.5 kW system, SRTs experienced an energy loss of 1.73 %, while the traditional PV system created infinite resistance to the flow of current. This resulted in no energy production when a single panel in both systems was exposed to environmental stress in the event of bypass diode failure. Moreover, findings demonstrate that SRTs can significantly contribute to a sustainable society by promoting affordable and clean energy access by generating 1871.72 kWh of clean energy annually. In addition, SRTs advance climate action by mitigating 335.7 kgCO2 equivalent GHG emissions through green energy production, even when taking system and aging losses into account.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176818"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142405869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antidiabetic, anti-inflammatory, antioxidant, and cytotoxicity potentials of green-synthesized zinc oxide nanoparticles using the aqueous extract of <i>Helichrysum cymosum</i>.","authors":"Achasih Q Nkemzi, Kunle Okaiyeto, Omolola Oyenihi, Chinyerum S Opuwari, Okobi E Ekpo, Oluwafemi O Oguntibeju","doi":"10.1007/s13205-024-04125-0","DOIUrl":"10.1007/s13205-024-04125-0","url":null,"abstract":"<p><p>The current research involved the synthesis of zinc oxide nanoparticles (ZnO-NPs) using an aqueous extract of <i>Helichrysum cymosum</i> shoots, and subsequent characterization via different analytical methods, such as UV-Vis spectroscopy, Scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Transmission electron microscope (TEM), and zeta potential. The biological effects of the ZnO-NPs were then tested against C3A hepatocyte cells and L6 myocyte cell lines via series of analysis, including cytotoxicity, antioxidant, anti-inflammatory, and antidiabetic effect via enzymatic inhibition. The UV-Vis analysis showed a maximum absorption spectrum at 360, and the TEM analysis reveals a spherical and hexagonal structures, with an average dimension of 28.05-58.3 nm, and the XRD reveals a crystalline hexagonal structure. The zeta potential evaluation indicated that the ZnO-NPs are relatively stable at - 20 mV, and the FTIR analysis identified some important functional group associated with phenolics, carboxylic acid, and amides that are responsible for reducing and stabilizing the ZnO-NPs. The synthesized ZnO-NPs demonstrated cytotoxic effects on the cell lines at higher concentrations (125 µg/mL and 250 µg/mL), complicating the interpretation of the results of the inflammatory and antioxidant assays. However, there was a significant (<i>p</i> < 0.05) increase in the inhibitions of pancreatic lipase, alpha-glucosidase, and alpha-amylase, indicating beneficial antidiabetic effects.</p>","PeriodicalId":7067,"journal":{"name":"3 Biotech","volume":"14 12","pages":"291"},"PeriodicalIF":2.6,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11535088/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence and deep learning algorithms for epigenetic sequence analysis: A review for epigeneticists and AI experts.","authors":"Muhammad Tahir, Mahboobeh Norouzi, Shehroz S Khan, James R Davie, Soichiro Yamanaka, Ahmed Ashraf","doi":"10.1016/j.compbiomed.2024.109302","DOIUrl":"10.1016/j.compbiomed.2024.109302","url":null,"abstract":"<p><p>Epigenetics encompasses mechanisms that can alter the expression of genes without changing the underlying genetic sequence. The epigenetic regulation of gene expression is initiated and sustained by several mechanisms such as DNA methylation, histone modifications, chromatin conformation, and non-coding RNA. The changes in gene regulation and expression can manifest in the form of various diseases and disorders such as cancer and congenital deformities. Over the last few decades, high-throughput experimental approaches have been used to identify and understand epigenetic changes, but these laboratory experimental approaches and biochemical processes are time-consuming and expensive. To overcome these challenges, machine learning and artificial intelligence (AI) approaches have been extensively used for mapping epigenetic modifications to their phenotypic manifestations. In this paper we provide a narrative review of published research on AI models trained on epigenomic data to address a variety of problems such as prediction of disease markers, gene expression, enhancer-promoter interaction, and chromatin states. The purpose of this review is twofold as it is addressed to both AI experts and epigeneticists. For AI researchers, we provided a taxonomy of epigenetics research problems that can benefit from an AI-based approach. For epigeneticists, given each of the above problems we provide a list of candidate AI solutions in the literature. We have also identified several gaps in the literature, research challenges, and recommendations to address these challenges.</p>","PeriodicalId":10578,"journal":{"name":"Computers in biology and medicine","volume":"183 ","pages":"109302"},"PeriodicalIF":7.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142580972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Overexpression of <i>bla</i>_SHV-12 caused by tandem amplification contributed to ceftazidime/avibactam resistance in hypervirulent and carbapenem-resistant <i>Klebsiella pneumoniae</i>.","authors":"Chao Liu, Juan Yi, Ping Yang, Chunjing Du, Fan Jiang, Ming Lu, Pengcheng Du, Ning Shen","doi":"10.1080/22221751.2024.2426481","DOIUrl":"10.1080/22221751.2024.2426481","url":null,"abstract":"<p><p>We identified a novel ceftazidime/avibactam (CAZ/AVI) resistance mechanism in endemic sequence type 11 hypervirulent and carbapenem-resistant <i>Klebsiella pneumoniae</i> isolated from a patient who had not been exposed CAZ/AVI. Overexpression of <i>bla</i>_SHV-12 caused by tandem gene amplification contributed to CAZ/AVI resistance instead of the carriage of <i>bla</i>_KPC-2. Enhanced genomic surveillance is essential to identify emerging variants.</p>","PeriodicalId":11602,"journal":{"name":"Emerging Microbes & Infections","volume":" ","pages":"2426481"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11565672/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142582514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of co-exposure of antibiotic and microplastic on the rhizosphere microenvironment of lettuce seedlings.","authors":"Aiyun Guo, Chengrong Pan, Xu Zhou, Yanyu Bao","doi":"10.1016/j.scitotenv.2024.175983","DOIUrl":"10.1016/j.scitotenv.2024.175983","url":null,"abstract":"<p><p>Antibiotics and microplastics (MPs) often coexist in facility agriculture soils due to the prevalent use of animal manure and plastic films. However, their combined impacts on the rhizosphere environment of lettuce remain unclear. This study assessed the effects of individual and combined exposure to polyethylene (PE) MPs (2 g·kg^-1) and oxytetracycline (OTC) (0, 5, 50, and 150 mg·kg^-1) on the growth of lettuce seedlings and enzyme activities, physicochemical properties, metabolite profiles and bacterial communities of rhizosphere soil of lettuce. Exposure to 150 mg·kg^-1 OTC, either individually or combined, significantly increased lettuce seedling shoot biomass. All treatments decreased chlorophyll and carotenoid contents. Combined exposure notably increased the Simpson's index of rhizosphere bacterial communities and altered community composition. The number of differential genera of rhizosphere was less than that of non-rhizosphere. Combined exposure significantly changed both rhizosphere and non-rhizosphere metabolite profiles. Soil organic matter emerged as the key environmental factor influencing bacterial community variation. Mantel tests revealed strong positive associations between total potassium and rhizosphere bacterial communities under combined exposure. The correlation network identified stearic acid and palmitic acid as the core metabolites in the rhizosphere. These findings offer valuable insights into the impact of OTC combined with PE MPs on lettuce rhizosphere environment.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"175983"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142152900","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anaerobic degradation of excess protein-rich fish feed drives CH₄ ebullition in a freshwater aquaculture pond.","authors":"Carolin Waldemer, Oliver J Lechtenfeld, Shuxian Gao, Matthias Koschorreck, Peter Herzsprung","doi":"10.1016/j.scitotenv.2024.176514","DOIUrl":"10.1016/j.scitotenv.2024.176514","url":null,"abstract":"<p><p>Aquaculture is a climate-relevant source of greenhouse gases like methane. Methane emissions depend on various parameters, with organic matter playing a crucial role. Nevertheless, little is known about the composition of organic matter in aquaculture. We investigated the effects of excessive loading of high-protein fish feed on the quality of sediment organic matter in a fishpond to explain extremely high methane ebullition rates (bubble flux). Analysing the molecular composition of water-extractable organic matter using liquid chromatography Fourier-transform ion cyclotron resonance mass spectroscopy, we found strong differences between the feeding area and open water area: low-molecular weight nitrogen and sulphur-rich organic compounds were highly enriched at the feeding area. In addition, methane ebullition correlated well with sediment protein content and total bound nitrogen in pore water. Our results indicate that feed proteins in the sediments are hydrolysed into oligopeptides (CHNO) and subsequently converted to CHOS and CHNOS components during anaerobic deamination of protein and peptide fragments in the presence of inorganic sulphides. These metabolites accumulate at the feeding area due to continuous feed supply. Our findings illustrate the adverse effects of excessive feeding leading to bioreactor-like methane emissions at the feeding area. Improving feed management has the potential to make aquaculture more climate-friendly.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176514"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142338492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biotransformation and oxidative stress markers in yellowfin seabream (Acanthopagrus latus): Interactive impacts of microplastics and florfenicol.","authors":"Mehrnaz Shirmohammadi, Farahnaz Kianersi, Nima Shiry, Mario Alberto Burgos-Aceves, Caterina Faggio","doi":"10.1016/j.scitotenv.2024.176661","DOIUrl":"10.1016/j.scitotenv.2024.176661","url":null,"abstract":"<p><p>This study investigates the combined toxicity of microplastics (MPs) and florfenicol (FLO) on biotransformation enzymes and oxidative stress biomarkers in the liver and kidney of yellowfin seabream (Acanthopagrus latus). Fish were fed 15 mg kg^-1 of FLO and 100 or 500 mg kg^-1 of MPs for 10 days. Biomarkers, including ethoxyresorufin-O-deethylase, glutathione-S-transferase, superoxide dismutase, catalase, glutathione peroxidase, malondialdehyde (MDA), and protein carbonylation (PC), were measured in both organs at 1, 7, and 14 days post-exposure. FLO levels peaked on day 1 and declined after that. Liver biomarkers were more responsive to pollutants, with the combined exposure of FLO and MPs leading to more pronounced toxicity. By day 14, only the FLO group showed a return to baseline biomarker levels, while MDA and PC levels remained elevated in MPs and co-exposed groups. These findings highlight the importance of considering the interactive effects of multiple pollutants in addressing marine environmental stressors.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176661"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142370618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Decadal changes in microplastic accumulation in freshwater sediments: Evaluating influencing factors.","authors":"Jutamas Bussarakum, William D Burgos, Samuel B Cohen, Kimberly Van Meter, Jon N Sweetman, Patrick J Drohan, Raymond G Najjar, Jill M Arriola, Katharina Pankratz, Lisa A Emili, Nathaniel R Warner","doi":"10.1016/j.scitotenv.2024.176619","DOIUrl":"10.1016/j.scitotenv.2024.176619","url":null,"abstract":"<p><p>Microplastics are small plastic particles with sizes ranging between 1 μm and 5 mm. Microplastics can originate from macro plastics and degrade to a smaller size or be produced directly by manufacturers. Few studies have examined microplastic contamination in freshwater sediment cores to estimate changes in microplastic contamination over time. We present the results of a study that examined sediment cores from four watersheds, Kiskiminetas River, Blacklick Creek, Raystown Lake, and Darby Creek, in Pennsylvania, USA to reveal the history of microplastic accumulation and factors that contribute to microplastic distribution. The abundance and morphology of microplastics varied over time and between these four locations. The highest microplastic abundance was found in Raystown Lake, ranging from 704 to 5397 particles kg^-1 with fiber as the dominant microplastic type, while Darby Creek (0-3000 particles kg^-1), Kiskiminetas River (0-448 particles kg^-1), and Blacklick Creek (0-156 particles kg^-1) had lower microplastic concentration. Moreover, Darby Creek had the most diverse microplastic morphology and a trend of decreasing concentration with depth. Although the Darby Creek watershed has the most developed area and highest population density, it did not have the highest microplastic concentration. Averaged over the four cores, microplastic abundance increased as global plastics production increased from the 1950s-2010s. Our findings provide insights into the fate and transport of microplastic contamination in freshwater environments, which is vital to establishing sustainable mitigation strategies.</p>","PeriodicalId":422,"journal":{"name":"Science of the Total Environment","volume":" ","pages":"176619"},"PeriodicalIF":5.4,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142370628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}