The spatial variation and temporal trends of legacy emerging per- polyfluoroalkyl substances (PFASs) from 2011 to 2021 in agricultural soils Eastern China, which is one the largest PFAS production consumption regions world, were evaluated. We found that PFOS concentration decreased by 28.2% during this period. Given are sinks for persistent organic pollutants (POPs), our results suggest implementation Stockholm Convention its indirect effects, combined with a voluntary phaseout, effective...

Despite their ubiquitous use, information regarding the presence of quaternary ammonium compounds (QACs) in various microenvironments remains scarce and only a small subset QACs has been monitored using targeted chemical analysis. In this study, total 111 dust samples were collected from homes public settings South China during COVID-19 pandemic analyzed for traditional emerging high-resolution mass spectrometry. The QAC concentrations residential (∑traditional QAC, sum 18 QACs) ranged 13.8...

A hydrogel exhibits a real-time depth-controllable swimming motion via light-mediated modulation of local density to mimic the volume changes found in bladders fish. Moreover, other motions, e.g., rolling, somersaulting, and bipedal-like walking, can also be realized by designing or combining gel shapes, location light. An actuator is kind device that transform certain energy source into motion, which has been applied lot fields.1 Many types motions have researchers, crawling,2...

Abstract The global incidence of dengue fever has gradually increased in recent years, posing a serious threat to human health. In the absence specific anti-dengue drugs, understanding interaction Dengue virus (DENV) with host is essential for development effective therapeutic measures. Autophagy often activated during DENV infection promote viral replication, but mechanism how DENV's own proteins induce autophagy not been clarified. this study, we first preliminarily identified DENV-2 NS1...

Fumonisin B1 (FB1) is one of the most toxic mycotoxins and harmful to humans animals due its hepatotoxicity, immunotoxicity carcinogenicity. However, mechanism immunosuppressive effect still under investigation. Dendritic cells (DCs) are potent professional antigen-presenting cells, their differentiation, maturation immunomodulatory functions closely related certain mycotoxins. Migratory capacity a prerequisite for mature DCs (mDCs) move present antigens in secondary lymphoid tissue, whereas...

Two sulfoxide-containing Schiff bases, (E)-(((2-(methylsulfinyl phenyl) imino)methyl)-4-nitrophenol (HL1) and (E)-3,5-dibromo-2-(((2-(methylsulfinyl phenyl)imino)methyl)phenol (HL2), were prepared by condensation subsequent oxidation reactions. In the presence of triethylamine, reactions HL1 with 0.5 equivalent copper acetate, cobalt nickel acetate zinc in ethanol afforded four metal complexes: (η2-N,O-L1)Cu(η3-O,N,O-L1) (1) (η3-O,N,O-L1)2M (M = Co, 2; Ni, 3; Zn, 4), respectively. Similarly,...

Reclaimed-water irrigation can introduce perfluoroalkyl and polyfluoroalkyl substances (PFASs) into farmlands. Selecting an appropriate method may mitigate the adverse effects of reclaimed-water irrigation; however, methods on PFAS pollution in different vegetables have remained poorly studied. Here, we collected soils from a farmland irrigated with long-term to cultivate potato, carrot, cabbage, pak choi using surface sprinkler reclaimed water or freshwater; concentrations water, soil,...

As an emerging group of per- and polyfluoroalkyl substances (PFAS), fluorotelomer ethoxylates (FTEOs) are widely employed as a major ingredient in antifog products. However, knowledge about their environmental distribution human exposure remains scarce. Herein, we reported the ubiquitous detection 6:2 FTEO homologues popular products (n = 47), indoor dust from residential homes 80), serum pregnant women 90) living South China, demonstrating broad use widespread exposure. The cumulative...

Traditional numerical integration requires sufficient smoothness of the integrand to achieve high-order algebraic accuracy. If function has a boundary layer with large gradient, composite formula on uniform mesh will produce very errors. In this paper, we study Newton-Cotes based Lagrange interpolation functions, local [see in PDF] projection approximating integrand, and Gauss integration. On Shishkin mesh, establish an optimal-order error estimate uniformly perturbation parameter. The...

Abstract Aims To systematically investigate the association between individual and combined metal exposure periodontitis. Methods Data encompassing complete periodontal examinations detection in blood urine samples were procured from National Health Nutrition Examination Survey (NHANES) 2011–2014. Three statistical methods, namely weighted logistic regression, Bayesian kernel machine regression (BKMR), quantile sum (WQS) used to evaluate independent associations metals Results Elevated...

Artificial intelligence (AI) is currently exerting a significant impact on the development of career guidance education, facilitating personalized and data-driven decision-making for students. The historical evolutionary trajectory AI-driven education can be traced back to its early stages as assistive functionalities, which have now advanced encompass robust learning applications, such multimedia interactive features, machine learning, natural language processing. Notably, AI has...

Per- and polyfluoroalkyl substances (PFASs) constitute a broad group of fluorinated organic chemicals that are widely used in consumer products industrial applications due to their excellent physicochemical properties. Given people spend significant portion time office environments, our understanding the environmental presence human exposure these is crucial. In this study, we conducted targeted analysis 24 PFASs indoor environments. The ΣPFAS concentrations ranged from 51.6 219 ng/g with...

Abstract Genistein and daidzein are two major isoflavonoids in soybeans. They have received increasing attention because of their possible role cancer prevention. In the present investigation, human colon tumor (HCT) cell line was used to investigate effect on growth with 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetra‐zolium bromide colorimetric assay. We found that genistein and/or could inhibit HCT cells. The 50% inhibitory concentrations were 15 40 μM, respectively. Fluorescent...

Class activities are a pivotal instrument in augmenting students' self-management skills. However, prevalent challenge is the passive participation of students, leading to diminished sense engagement. To tackle this issue, study undertook an in-depth analysis identify underlying issues hampering effectiveness class activities. Consequently, Selection, Design, Organization, and Assessment (SDOA) activity model was developed, aimed specifically at enhancing The encompassed sample 100...

In the contemporary era of globalization, learning a second language has become pivotal means to broaden individual perspectives and enhance competitiveness. English, as lingua franca international communication, assumes particular importance. This paper delves into integrated application situated (SL) task-based teaching (TBLT) in English Second Language (ESL) instruction, aiming augment learners' executive function (EF) cognitive ability (CA). SL theory underscores interplay between...

SUMMARY A suspected dengue fever outbreak occurred in 2010 at a solitary construction site Shenzhen city, China. To investigate this epidemic, we used serological, molecular biological, and bioinformatics techniques. Of nine serum samples from patients, detected seven positive for virus (DENV) antibodies, eight DENV-1 RNA, three containing live viruses. The isolated virus, SZ1029 strain, was sequenced confirmed as DENV-1, showing the highest E-gene homology to D1/Malaysia/36000/05...

This paper reports on the application of attapulgite for immobilization tris(2,2'- bipyridyl)ruthenium(II) ([Ru(bpy)3]2+) to improve its electrochemiluminescence (ECL) sensing. The clay is a kind natural nanomaterial and belongs family fibrous hydrous magnesium silicates. immobilized [Ru(bpy)3]2+ displayed pair well-defined redox peaks with an electron-transfer rate constant 9.27 s-1 fast ECL response oxalate tripropylamine (TPA) in 0.1 M pH 7.0 phosphate buffer. could maintain behavior...