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Investigation and risk assessment of PCDDs, PCDFs, and dl-PCBs in Chinese mitten crab (Eriocheir sinensis) from the South Dongting lake area, China 南洞庭湖区中华绒螯蟹中pcdd、pcdf和dl-PCBs的调查与风险评价
IF 5.3 2区 环境科学与生态学
Emerging Contaminants Pub Date : 2025-05-23 DOI: 10.1016/j.emcon.2025.100521
Wei Xiang , Fuhua Fu , Xuebo Shang , Jian Xu , Fengxiang Yu , Dengni Lai , Yang Shan
{"title":"Investigation and risk assessment of PCDDs, PCDFs, and dl-PCBs in Chinese mitten crab (Eriocheir sinensis) from the South Dongting lake area, China","authors":"Wei Xiang ,&nbsp;Fuhua Fu ,&nbsp;Xuebo Shang ,&nbsp;Jian Xu ,&nbsp;Fengxiang Yu ,&nbsp;Dengni Lai ,&nbsp;Yang Shan","doi":"10.1016/j.emcon.2025.100521","DOIUrl":"10.1016/j.emcon.2025.100521","url":null,"abstract":"<div><div>Dioxins are among the common persistent organic pollutants in crabs. To clarify the potential risk of dioxins pollution in Chinese mitten crab, eight types of samples were collected in the South Dongting Lake area for the analysis of 17 PCDD/Fs and 12 dl-PCBs. The results indicate that the concentration of Σ PCDD/Fs and Σ dl-PCBs in crabs was between 0.993–10.8 and 35.0–282 pg/g w.w., respectively. The mean WHO-TEQ value of Σ PCDD/Fs in crabs was 0.248 ± 0.205 pg TEQ/g w.w., and the mean WHO-TEQ value of Σ PCDD/Fs + dl-PCBs in crabs was 0.359 ± 0.280 pg TEQ/g w.w. The total toxic equivalent of bottom sediment, surrounding soil, crab brown meat and juvenile crab were relatively high, which were 2.88, 2.67, 1.50 and 1.30 pg TEQ/g w.w., respectively. In the case of 99th percentile, the WHO-TEQ values of Σ PCDD/Fs and Σ PCDD/Fs + dl-PCBs in crab white meat were all within the maximum permitted levels as specified in commission regulation (EU) 2023/915. The <em>HQ</em> values of 99th percentile of Σ PCDD/Fs + dl-PCBs were 0.0783, 0.00703 and 0.0853 for eating brown meat products, eating white meat products and eating whole crabs, respectively. The coordinate points of the samples are connected to the origin by a straight line in the correspondence analysis map. The angle formed by the straight lines of crab brown meat/crab white meat and juvenile crab was acute angle, as did the feed. The angles between the straight line of bottom sediment/surrounding soil and that of other samples were all obtuse angles. In conclusion, although the dioxins of bottom sediment and surrounding soil are obvious, the dioxins of adult crabs are mainly related to that of the juvenile crabs and feed. At present, the intake of dioxins from Chinese mitten crab by Chinese residents is at a safe level because of low annual consumption. It is recommended that adults limit their weekly crab consumption to 1–4 crabs, or only 23.1–105 g of crab brown meat per week, or solely 435–1242 g of crab white meat per week.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 3","pages":"Article 100521"},"PeriodicalIF":5.3,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
引用次数: 0
The effect of tire microplastics on aerobic granular sludge performance 轮胎微塑料对好氧颗粒污泥性能的影响
IF 5.3 2区 环境科学与生态学
Emerging Contaminants Pub Date : 2025-05-22 DOI: 10.1016/j.emcon.2025.100513
Job Oliver Otieno , Piotr Jachimowicz , Magdalena Zielińska , Weronika Irena Mądzielewska , Agnieszka Cydzik-Kwiatkowska
{"title":"The effect of tire microplastics on aerobic granular sludge performance","authors":"Job Oliver Otieno ,&nbsp;Piotr Jachimowicz ,&nbsp;Magdalena Zielińska ,&nbsp;Weronika Irena Mądzielewska ,&nbsp;Agnieszka Cydzik-Kwiatkowska","doi":"10.1016/j.emcon.2025.100513","DOIUrl":"10.1016/j.emcon.2025.100513","url":null,"abstract":"<div><div>Although tire microplastics (TMPs) constitute a substantial portion of microplastic entering wastewater treatment plants, there is a knowledge gap regarding the influence of TMPs on aerobic granular sludge (AGS) systems, which, being more resilient than activated sludge, are becoming increasingly important in modern wastewater treatment. This study investigated the effect of TMPs in wastewater (50, 100, 250, and 500 mg/L) on AGS performance and microbiome. TMPs did not affect organics and phosphorus removal, however, total nitrogen removal was significantly higher (about 9 %) at 500 mg TMPs/L compared to the control. TMPs improved biomass settling, but this was due to TMP accumulation (TMPs comprised over 50 % of biomass at 500 mg TMP/L) rather than improved granulation. The biomass yield coefficient was five times lower at 500 mg TMP/L than in the control. TMPs elevated dehydrogenase activity (free radical generation) and increased the abundance of microbes involved in polyP synthesis and nitrogen metabolism. TMP presence increased the microbiome potential in terms of antibiotic resistance genes (<em>cmd</em> and <em>marR</em>) and the abundance of hydrolases, which degrade rubber-associated ester bonds, and significantly increased the abundance of MP-degraders belonging to genera <em>Ideonella, Rhodobacter</em>, <em>Xanthobacter,</em> and <em>Hydrogenophaga</em>. This study demonstrates that while TMPs in wastewater do not impair nutrient removal by AGS, their accumulation significantly degrades biomass properties, complicating sludge management and disposal. Furthermore, TMPs alter the AGS microbiome's composition and metabolic potential. These findings highlight the importance of integrating AGS systems into urban wastewater treatment, optimizing sludge management strategies, and developing targeted approaches to address the challenges posed by TMPs.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 3","pages":"Article 100513"},"PeriodicalIF":5.3,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
引用次数: 0
Epidemiology of Social Isolation Among Middle-aged and Older Adults in China. 中国中老年人社会隔离的流行病学研究
中国医学科学院学报 Pub Date : 2025-05-21 DOI: 10.3881/j.issn.1000-503X.16657
Lin Zhang, Shu Jing, Xue-Lin Yang, Yu-Ping Wang, Xiao-You Su
{"title":"Epidemiology of Social Isolation Among Middle-aged and Older Adults in China.","authors":"Lin Zhang, Shu Jing, Xue-Lin Yang, Yu-Ping Wang, Xiao-You Su","doi":"10.3881/j.issn.1000-503X.16657","DOIUrl":"https://doi.org/10.3881/j.issn.1000-503X.16657","url":null,"abstract":"<p><p>Objective To explore the contemporary prevalence,cumulative incidence,distribution characteristics,and correlates of social isolation among middle-aged and older adults aged 45 years and older in China. Methods This study utilized data from the China Health and Retirement Longitudinal Study.Cross-sectional studies with stratified analysis were conducted to investigate the prevalence of social isolation and its age,gender,and regional differences in 2018 and 2020.A cohort study and binary logistic regression models were employed to analyze the cumulative incidence of social isolation and its correlates from 2018 to 2020.Multiple imputation based on chained equations and sensitivity analyses based on complete-case data were employed to ensure the reliability of the analysis. Results In 2018,the weighted prevalence of social isolation among middle-aged and older adults was 16.48%(95%CI=15.67%-17.32%).In 2020,the weighted prevalence of social isolation among middle-aged and older adults was 18.84%(95%CI=17.93%-19.74%).Weighted stratified analyses indicated that the prevalence of social isolation was significantly higher among older adults,individuals residing in rural areas,and females.The weighted cumulative incidence of social isolation during 2018-2020 was 9.24%(95%CI=8.47%-10.02%).The analysis revealed that 34.02%(95%CI=32.85%-35.19%)of middle-aged and older adults exhibited depressive symptoms.Depressive symptoms(OR=1.38,95%CI=1.07-1.78,P=0.013)were significantly associated with an elevated risk of social isolation. Conclusion The study reveals the epidemiology of social isolation among middle-aged and older adults in China,identifying advanced age,female gender,rural residence,and depressive symptoms as key correlates.These findings emphasize the need for early health management strategies to address social isolation in these high-risk populations.</p>","PeriodicalId":6919,"journal":{"name":"中国医学科学院学报","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144109166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction: Organophosphorus pollutant degradation in wastewater using the microscale zero-valent iron/O3 process: optimization, performance, and mechanism 修正:微尺度零价铁/O3工艺降解废水中有机磷污染物:优化、性能及机理
Journal of Leather Science and Engineering Pub Date : 2025-05-20 DOI: 10.1186/s42825-025-00205-w
Zhenpeng Cai, Yujia Xiang, Boyi Cong, Yang Liu, Shuai Yang, Ningruo Wang, Heng Zhang, Yuzhong Wang, Bo Lai
{"title":"Correction: Organophosphorus pollutant degradation in wastewater using the microscale zero-valent iron/O3 process: optimization, performance, and mechanism","authors":"Zhenpeng Cai,&nbsp;Yujia Xiang,&nbsp;Boyi Cong,&nbsp;Yang Liu,&nbsp;Shuai Yang,&nbsp;Ningruo Wang,&nbsp;Heng Zhang,&nbsp;Yuzhong Wang,&nbsp;Bo Lai","doi":"10.1186/s42825-025-00205-w","DOIUrl":"10.1186/s42825-025-00205-w","url":null,"abstract":"","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00205-w","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144100187","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multi-scale cross-modal feature fusion and cost-sensitive loss function for differential detection of occluded bagging pears in practical orchards 多尺度跨模态特征融合与代价敏感损失函数在实际果园闭塞套袋梨鉴别检测中的应用
IF 8.2
Artificial Intelligence in Agriculture Pub Date : 2025-05-18 DOI: 10.1016/j.aiia.2025.05.002
Shengli Yan , Wenhui Hou , Yuan Rao , Dan Jiang , Xiu Jin , Tan Wang , Yuwei Wang , Lu Liu , Tong Zhang , Arthur Genis
{"title":"Multi-scale cross-modal feature fusion and cost-sensitive loss function for differential detection of occluded bagging pears in practical orchards","authors":"Shengli Yan ,&nbsp;Wenhui Hou ,&nbsp;Yuan Rao ,&nbsp;Dan Jiang ,&nbsp;Xiu Jin ,&nbsp;Tan Wang ,&nbsp;Yuwei Wang ,&nbsp;Lu Liu ,&nbsp;Tong Zhang ,&nbsp;Arthur Genis","doi":"10.1016/j.aiia.2025.05.002","DOIUrl":"10.1016/j.aiia.2025.05.002","url":null,"abstract":"<div><div>In practical orchards, the challenges posed by fruit overlapping, branch and leaf occlusion, significantly impede the successful implementation of automated picking, particularly for bagging pears. To address this issue, this paper introduces the multi-scale cross-modal feature fusion and cost-sensitive classification loss function network (MCCNet), specifically designed to accurately detect bagging pears with various occlusion categories. The network designs a dual-stream convolutional neural network as its backbone, enabling the parallel extraction of multi-modal features. Meanwhile, we propose a novel lightweight cross-modal feature fusion method, inspired by enhancing shared features between modalities while extracting specific features from RGB and depth modalities. The cross-modal method enhances the perceptual capabilities of the model by facilitating the fusion of complementary information from multimodal bagging pear image pairs. Furthermore, we optimize the classification loss function by transforming it into a cost-sensitive loss function, aiming to improve detection classification efficiency and reduce instances of missing and false detections during the picking process. Experimental results on a bagging pear dataset demonstrate that our MCCNet achieves mAP0.5 and mAP0.5:0.95 values of 97.3 % and 80.3 %, respectively, representing improvements of 3.6 % and 6.3 % over the classical YOLOv10m model. When benchmarked against several state-of-the-art detection models, our MCCNet network has only 19.5 million parameters while maintaining superior inference speed.</div></div>","PeriodicalId":52814,"journal":{"name":"Artificial Intelligence in Agriculture","volume":"15 4","pages":"Pages 573-589"},"PeriodicalIF":8.2,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144139789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Non-targeted screening and characterization of organic pollutants in wastewater from an industrial park in China 某工业园区废水中有机污染物的非靶向筛选与表征
IF 5.3 2区 环境科学与生态学
Emerging Contaminants Pub Date : 2025-05-17 DOI: 10.1016/j.emcon.2025.100519
Xu Tan, Shanwei Sun, Song Hou, Linlin Wu, Yangwei Bai, Hongbo Xi, Jian Xu, Changsheng Guo
{"title":"Non-targeted screening and characterization of organic pollutants in wastewater from an industrial park in China","authors":"Xu Tan,&nbsp;Shanwei Sun,&nbsp;Song Hou,&nbsp;Linlin Wu,&nbsp;Yangwei Bai,&nbsp;Hongbo Xi,&nbsp;Jian Xu,&nbsp;Changsheng Guo","doi":"10.1016/j.emcon.2025.100519","DOIUrl":"10.1016/j.emcon.2025.100519","url":null,"abstract":"<div><div>Industrial parks are significant sources of complex water pollution, making it challenging to trace pollutant origins and ensure water quality. This study established a non-targeted screening workflow and compound persistence, mobility, and toxicity (PMT) assessment method to identify and characterize organic pollutants in wastewater from a chemical industrial park in Central China. Among the 255 compounds identified, some aromatic ketones and phthalate esters raised concerns due to their potential health effects. PMT assessment revealed 2 PMT/vPMT (v = very) compounds, 36 potential PMT/vPMT compounds, and 50 potential PT/vPT or PM/vPM compounds. Exposure-discharge modeling indicated the wastewater treatment plant's limited efficiency in treating the predominantly aromatic pollutants. Traceability analysis identified 23 characteristic pollutants from eight enterprises. This study provides valuable insights for identifying unknown compounds, evaluating industrial wastewater discharge standards, and enabling precise management of water pollution in industrial parks.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 3","pages":"Article 100519"},"PeriodicalIF":5.3,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
引用次数: 0
Oral collagen-based supplement as a bioactive component in functional foods 口服胶原蛋白补充剂作为功能性食品中的生物活性成分
Journal of Leather Science and Engineering Pub Date : 2025-05-16 DOI: 10.1186/s42825-025-00198-6
Yue Wu, Siqi Deng, Wenqi Wei, Yuanmeng He, Yunxiang He, Gonghua Hong, Yanbin Zheng, Linli Han, Yifei Li, Yimin Hua, Junling Guo
{"title":"Oral collagen-based supplement as a bioactive component in functional foods","authors":"Yue Wu,&nbsp;Siqi Deng,&nbsp;Wenqi Wei,&nbsp;Yuanmeng He,&nbsp;Yunxiang He,&nbsp;Gonghua Hong,&nbsp;Yanbin Zheng,&nbsp;Linli Han,&nbsp;Yifei Li,&nbsp;Yimin Hua,&nbsp;Junling Guo","doi":"10.1186/s42825-025-00198-6","DOIUrl":"10.1186/s42825-025-00198-6","url":null,"abstract":"<div><p>Collagen, an abundant extracellular matrix protein in food-producing animals, is widely integrated into food systems for its unique physicochemical properties. Oral collagen-based supplements have received increasing attention for their potential to enhance overall well-being. This review aims to provide valuable insights into the application of oral collagen supplements in food systems, promoting their broader use in food processing, preservation, and the development of functional foods. Specifically, the applications of oral collagen-based supplements in functional foods, focusing on their biological activities, health benefits, and functional properties are summarized. Importantly, their molecular mechanisms of biological activities are critically discussed, including antioxidant, angiotensin-converting enzyme inhibitory, and dipeptidyl peptidase IV inhibitory activities. The health benefits of oral collagen-based supplements, particularly in improving skin, immune, and gastrointestinal health are also explored. Additionally, various functional properties of collagen-based supplements are evaluated, including their stability, bioavailability, taste masking, and sensory attributes.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":640,"journal":{"name":"Journal of Leather Science and Engineering","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://JLSE.SpringerOpen.com/counter/pdf/10.1186/s42825-025-00198-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A goal-oriented guidance approach for binary asteroids exploration 一种面向目标的双小行星探测制导方法
IF 2.7 1区 物理与天体物理
Astrodynamics Pub Date : 2025-05-16 DOI: 10.1007/s42064-024-0237-1
Antonio Rizza, Carmine Giordano, Francesco Topputo
{"title":"A goal-oriented guidance approach for binary asteroids exploration","authors":"Antonio Rizza,&nbsp;Carmine Giordano,&nbsp;Francesco Topputo","doi":"10.1007/s42064-024-0237-1","DOIUrl":"10.1007/s42064-024-0237-1","url":null,"abstract":"<div><p>Operations in proximity of minor bodies demands high levels of autonomy to achieve cost-effective safe and reliable solutions. Autonomous trajectory and operations planning capability plays a pivotal role in this. A goal-oriented guidance strategy for on-board implementation is presented in this paper to achieve high level mission objectives with impulsive control capability. The methodology is based on abstract reachability analysis performed on the control domain combining model predictive control theory with artificial potential fields algorithms. The formulation of the optimization problem in a general and flexible way allows to target different goals while being compliant with an arbitrary number of mission constraints. In particular, two main contributions to the field are proposed in this work: a way of embedding non-uniform observation constraints in the formulation to deal with challenging illumination conditions, and the inclusion of specific operational constraints to be compliant both with ground operations and on-board replanning. The methodology is applied to the Milani mission, one of the two Hera’s CubeSats, targeting a global coverage of the main attractor, Didymos, and detailed observations of specific features on the secondary asteroid, Dimorphos. The authors, being involved in the mission analysis, image processing, and GNC design of the platform, believe that this methodology also represents a viable tool for efficiently generating flight dynamics references during operations. Different metrics are investigated to achieve mission objectives leading to four application scenarios that are discussed in this work. Results are compared in terms of computational cost, convergence properties and efficiency. These results represent a step forward in enabling autonomous guidance capability for CubeSats proximity operations.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":52291,"journal":{"name":"Astrodynamics","volume":"9 2","pages":"289 - 302"},"PeriodicalIF":2.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144073780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Occurrence, accumulation and potential toxicity of parent and halogenated polycyclic aromatic hydrocarbons in pooled serum of people in different age groups from four Chinese cities 中国4个城市不同年龄组人群血清中母体和卤代多环芳烃的存在、积累及潜在毒性
IF 5.3 2区 环境科学与生态学
Emerging Contaminants Pub Date : 2025-05-16 DOI: 10.1016/j.emcon.2025.100518
Jiali Han , Junsong Bao , Tianwei Li , Yao Jiang , Yuhao Fan , Junjie Jiang , Jun Jin , Jicheng Hu
{"title":"Occurrence, accumulation and potential toxicity of parent and halogenated polycyclic aromatic hydrocarbons in pooled serum of people in different age groups from four Chinese cities","authors":"Jiali Han ,&nbsp;Junsong Bao ,&nbsp;Tianwei Li ,&nbsp;Yao Jiang ,&nbsp;Yuhao Fan ,&nbsp;Junjie Jiang ,&nbsp;Jun Jin ,&nbsp;Jicheng Hu","doi":"10.1016/j.emcon.2025.100518","DOIUrl":"10.1016/j.emcon.2025.100518","url":null,"abstract":"<div><div>Halogenated polycyclic aromatic hydrocarbons (HPAHs) and polycyclic aromatic hydrocarbons (PAHs) were determined in human serum samples pooled by donor age (&lt;20, 20–29, 30–39, 40–49 and ≥ 50 y). The pooled samples were collected from four Chinese cities, Yantai (Shandong Province), Ganzi (Sichuan Province), Huaihua (Hunan Province), and Lingshui (Hainan Province). The concentrations of HPAHs and PAHs were in the range of 4.26–633 ng/g lipid and 249–1642 ng/g lipid from the different cities. Although the levels of HPAHs in blood samples varied among the populations of the four cities, 1,5-dichloroanthracene (1,5-Cl<sub>2</sub>Ant) was the predominant contributor to HPAHs in the serum samples, accounting for over 85.7 % of its total concentration. Furthermore, 1,5-Cl<sub>2</sub>Ant serum concentrations increased significantly with age. Notably, molecular docking results show that 1,5-Cl<sub>2</sub>Ant not only acquires the ability to bind d-AhR PAS-B domain, but also binds at the similar sites as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and benzo[a]pyrene (BaP), suggesting that 1,5-Cl<sub>2</sub>Ant, like TCDD and BaP, may cause a wide variety of toxicity via AhR-mediated signaling pathways. The bioaccumulation potential of 1,5-Cl<sub>2</sub>Ant in the human body and its associated toxicity observed in this study need special attention.</div></div>","PeriodicalId":11539,"journal":{"name":"Emerging Contaminants","volume":"11 3","pages":"Article 100518"},"PeriodicalIF":5.3,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144166752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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}
引用次数: 0
Superlubricity of Double-Network Hydrogels Modified With Tween 80 and Hydrogenated Soybean Phosphatidylcholine
IF 1.6
Biosurface and Biotribology Pub Date : 2025-05-13 DOI: 10.1049/bsb2.70008
Haoyu Wang, Jian Song, Yuhong Liu
{"title":"Superlubricity of Double-Network Hydrogels Modified With Tween 80 and Hydrogenated Soybean Phosphatidylcholine","authors":"Haoyu Wang,&nbsp;Jian Song,&nbsp;Yuhong Liu","doi":"10.1049/bsb2.70008","DOIUrl":"https://doi.org/10.1049/bsb2.70008","url":null,"abstract":"<p>Artificial joint cartilage materials are central to arthroplasty for the treatment of osteoarthritis. Hydrogels are highly promising materials for fabricating artificial cartilage owing to their excellent biocompatibility and lubricity. Inspired by natural articular cartilage, in this study, we designed a modification strategy to enhance the lubricity of double-network (DN) hydrogels. Specifically, two lubricating substances, nonionic surfactant Tween 80 and hydrogenated soybean phosphatidylcholine (HSPC), were incorporated into a DN hydrogel. Lubricity-enhanced DN hydrogel exhibited superlubricity through the synergistic effect of Tween 80 and HSPC, with a low coefficient of friction of 0.008, which remained stable after 6 h of continuous tribological testing. In addition, the mechanical properties of lubricity-enhanced DN hydrogel were greater than those of unmodified DN hydrogel, with a 29% increase in fracture strain and a 1.7-fold increase in toughness. Tween 80 micelles reinforced the physically cross-linked network through hydrogen bonding with the DN hydrogel, whereas HSPC vesicles encapsulated in the polymer network served as reinforcement nodes to enhance the chemically cross-linked network. As a result, lubricity-enhanced DN hydrogel exhibited both excellent lubricity and mechanical properties. This study demonstrates an innovative way to design hydrogels exhibiting both superlubricity and excellent mechanical properties, broadening the applications of DN hydrogels in the field of artificial joint cartilage.</p>","PeriodicalId":52235,"journal":{"name":"Biosurface and Biotribology","volume":"11 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/bsb2.70008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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