T-2 toxin,an omnipresent environmental contaminant,poses a serious risk to the health of humans and animals due to its pronounced *** study aimed to elucidate the molecular mechanism of cardiac tissue damage by T-2 **...
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T-2 toxin,an omnipresent environmental contaminant,poses a serious risk to the health of humans and animals due to its pronounced *** study aimed to elucidate the molecular mechanism of cardiac tissue damage by T-2 ***-four male Sprague-Dawley rats were orally administered T-2 toxin through gavage for 12 weeks at the dose of 0,10,and 100 nanograms per gram body weight per day(ng/(g·day)),***,pathological,and ultrastructural alterations in cardiac tissue were meticulously ***-targeted metabolomics analysis was employed to analyze alterations in cardiac *** expression of the Sirt3/FoxO3α/MnSOD signaling pathway and the level of oxidative stress markers were *** results showed that exposure to T-2 toxin elicited myocardial tissue disorders,interstitial hemorrhage,capillary dilation,and fibrotic *** were markedly impaired,including swelling,fusion,matrix degradation,and membrane *** analysis unveiled that T-2 toxin could cause alterations in cardiacmetabolic profiles as well as in the Sirt3/FoxO3α/MnSOD signaling pathway.T-2 toxin could inhibit the expressions of the signaling pathway and elevate the level of oxidative *** conclusion,the T-2 toxin probably induces cardiac fibrotic impairment by affecting amino acid and choline metabolism as well as up-regulating oxidative stress mediated by the Sirt3/FoxO3α/MnSOD signaling *** study is expected to provide targets for preventing and treating T-2 toxin-induced cardiac fibrotic injury.
In artificial intelligence(AI) for science, the AI-empowered topology optimization methods have garnered sustained attention from researchers and achieved significant development. In this paper, we introduce the impli...
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In artificial intelligence(AI) for science, the AI-empowered topology optimization methods have garnered sustained attention from researchers and achieved significant development. In this paper, we introduce the implicit neural representation(INR) from AI and the material point method(MPM) from the field of computational mechanics into topology optimization, resulting in a novel differentiable and fully mesh-independent topology optimization framework named MI-TONR, and it is then applied to nonlinear topology optimization(NTO) design. Within MI-TONR, the INR is combined with the topology description function to construct the design model, while implicit MPM is employed for physical response analysis. A skillful integration is achieved between the design model based on the continuous implicit representation field and the analysis model based on the Lagrangian particles. Along with updating parameters of the neural network(i.e., design variables), the structural topologies iteratively evolve according to the responses analysis results and optimization functions. The computational differentiability is ensured at every step of MI-TONR, enabling sensitivity analysis using automatic differentiation. In addition, we introduce the augmented Lagrangian Method to handle multiple constraints in topology optimization and adopt a learning rate adaptive adjustment scheme to enhance the robustness of the optimization process. Numerical examples demonstrate that MI-TONR can effectively conduct NTO design under large loads without any numerical techniques to mitigate numerical instabilities. Meanwhile, its natural satisfaction with the no-penetration condition facilitates the NTO design of considering contact. The infinite spatial resolution characteristic facilitates the generation of structural topology at multiple resolutions with clear and continuous boundaries.
Personal care products(PCPs)are a class of emerging pollutants that have attracted public concern owing to their harmful effects on humans and the *** data is valuable for insight the levels of PCPs in the human body ...
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Personal care products(PCPs)are a class of emerging pollutants that have attracted public concern owing to their harmful effects on humans and the *** data is valuable for insight the levels of PCPs in the human body and can be crucial for identifying potential health *** gain a better understanding of timely exposure profiles and health risk of reproductive-age population to PCPs,we determined six parabens,six benzophenone-type ultraviolet filters,and three disinfectants in 256 urine samples collected from young adults aged 18-44 years in Beijing,*** urinary levels of benzophenone-3(BP-3)and 4-hydroxybenzophenone(4-OHBP)were significantly higher in summer compared to winter,suggesting these compounds have different seasonal usage ***,the total concentration of 15 PCPs in female was 430 ng/mL,approximately two times higher than that in male.P-chloro-m-xylenol(PCMX),as a new type of antibacterial agent,has the greatest level among all target analytes,indicating the increasingly use of this antibacterial alternative *** potential influencing factors that lead to the elevated exposure level of PCPs were *** 19%of the target population had a high hazard index value(greater than 1)which was attributed to exposure to propyl paraben(PrP),benzophenone-1(BP-1),BP-3 and PCMX,indicating that PCPs may pose a relatively high exposure risk at environmental levels that should be a cause for concern.
Improving the volumetric energy density of supercapacitors is essential for practical applications,which highly relies on the dense storage of ions in carbon-based *** functional units of carbon-based electrode exhibi...
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Improving the volumetric energy density of supercapacitors is essential for practical applications,which highly relies on the dense storage of ions in carbon-based *** functional units of carbon-based electrode exhibit multi-scale structural characteristics including macroscopic electrode morphologies,mesoscopic microcrystals and pores,and microscopic defects and dopants in the carbon basal ***,the ordered combination of multi-scale structures of carbon electrode is crucial for achieving dense energy storage and high volumetric performance by leveraging the functions of various scale structu *** that previous reviews have focused more on the discussion of specific scale structu re of carbon electrodes,this review takes a multi-scale perspective in which recent progresses regarding the structureperformance relationship,underlying mechanism and directional design of carbon-based multi-scale structures including carbon morphology,pore structure,carbon basal plane micro-environment and electrode technology on dense energy storage and volumetric property of supercapacitors are systematically *** analyzed in detail the effects of the morphology,pore,and micro-environment of carbon electrode materials on ion dense storage,summarized the specific effects of different scale structures on volumetric property and recent research progress,and proposed the mutual influence and trade-off relationship between various scale *** addition,the challenges and outlooks for improving the dense storage and volumetric performance of carbon-based supercapacitors are analyzed,which can provide feasible technical reference and guidance for the design and manufacture of dense carbon-based electrode materials.
With the rapid development of modern communication technology, spectrum resources have become non-renewable and precious resources, and the terahertz frequency band has entered people's vision. Nowadays, terahertz com...
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With the rapid development of modern communication technology, spectrum resources have become non-renewable and precious resources, and the terahertz frequency band has entered people's vision. Nowadays, terahertz communication technology has become one of the core technologies for future high-capacity and high-rate communication. This paper discusses and analyzes the core technologies related to the field of terahertz *** introduce the characteristics, domestic and international comparisons and development trends of the core devices for terahertz communication, and also introduce and discuss the terahertz solid-state frequency mixing communication system, terahertz direct modulation communication system, and terahertz optoelectronic communication ***, we summarize the development of terahertz communication technology and the outlook of future applications.
Large-area flexible organic photovoltaic(OPV)modules are challenging to achieve high power conversion efficiency(PCE).Electrical shunts or shortages generally occur in large-area OPV modules due to the ultrathin(100-2...
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Large-area flexible organic photovoltaic(OPV)modules are challenging to achieve high power conversion efficiency(PCE).Electrical shunts or shortages generally occur in large-area OPV modules due to the ultrathin(100-200 nm)and soft active *** the surface smoothness of bottom transparent electrode will be able to suppress the shunts and *** this work,we report a method to fabricate smooth and flexible transparent electrodes based on thin silver film,and further to fabricate efficient large-area flexible OPV *** fabricated thin silver transparent electrodes simultaneously have high conductivity,high optical transmittance,good mechanical flexibility and low surface *** exposure(h.e.)treatment on MoO_(3)effectively facilitates the continuous growth of the thin transparent silver electrode.6 nm silver film on MoO_(3)(h.e.)on plastic substrate shows a transmittance up to 89%,a sheet resistance of 15Ω/sq,and a low surface roughness with a rootmean-square value of 0.276 ***,52-cm^(2)flexible organic solar modules(15 subcells)showed a certified PCE of 12.66%.Furthermore,a 1350 cm^(2)flexible component assembled by 25 pieces of 52-55 cm^(2)modules showed certified PCE of 12.10%with an open-circuit voltage of 62.85 V.
Sodium-ion-based electrochromic device(SECD) has been identified as an appealing cost-effective alternative of lithium-based counterparts,only if it can address the challenges in association with the inadequate electr...
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Sodium-ion-based electrochromic device(SECD) has been identified as an appealing cost-effective alternative of lithium-based counterparts,only if it can address the challenges in association with the inadequate electrochromic *** this regard,the quantized strategy is a particularly promising approach owing to the large surface-to-volume ratio and high reaction ***,quantum dots inevitably suffer from volume changes and undesired aggregation during electrochemical cycling.
Ti-Zr-Nb refractory multi-principal element alloys(RMPEAs)have attracted increased attention due to their excellent mechanical *** this study,(TiZr)80-xNb20Mox(x=0,5 and 10)alloys were designed,and the intrinsic confl...
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Ti-Zr-Nb refractory multi-principal element alloys(RMPEAs)have attracted increased attention due to their excellent mechanical *** this study,(TiZr)80-xNb20Mox(x=0,5 and 10)alloys were designed,and the intrinsic conflicts between strength and ductility were overcome via composition optimization and *** causes of the superior strength-ductility synergy were investigated in terms of their deformation mechanism and dislocation *** results show that the strength improvement can be attributed to the defor-mation mechanism transition caused by local chemical fluctuations and lattice ***,the slip band widths decrease after Mo addition,and the measured slip traces in the fracture samples are associated with high-order {112} and { 123} slip ***,the grain refinement achieved via recrystallization promotes multi-slip system activation and shortens the slip-band spacing,which reduces the stress concentration and inhibits crack source formation,thereby allowing the alloy to ensure sufficient ***,the Ti35Zr35Nb20Mo10 alloy annealed at 900 ℃ exhibits high yield strength and *** findings provide a new strategy for designing high-strength RMPEAs and addressing room-temperature brittleness.
The increasing importance of high-purity isopropyl alcohol(IPA) in semiconductor processing technology has led to a higher demand for technologies capable of detecting impurities in I *** accurate and various impurity...
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The increasing importance of high-purity isopropyl alcohol(IPA) in semiconductor processing technology has led to a higher demand for technologies capable of detecting impurities in I *** accurate and various impurity detection technologies have been developed,most of them have limitations in real-time and repeatable detection of ***,for the first time,surface plasmon resonance(SPR) sensor was developed utilizing graphene transferred Au film(Au/graphene) to detect sub-ppm levels of 2,4-dinitrophenol(2,4-DNP) dissolved in IPA and this sensor demonstrates the ability to detect 2,4-DNP in real-time with great reversibility.
Achieving high-performance aqueous zinc-ion batteries requires addressing the challenges associated with the stability of zinc metal anodes,particularly the formation of inhomogeneous zinc dendrites during cycling and...
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Achieving high-performance aqueous zinc-ion batteries requires addressing the challenges associated with the stability of zinc metal anodes,particularly the formation of inhomogeneous zinc dendrites during cycling and unstable surface *** study introduces a practical method for scattering untreated bulk hexagonal boron nitride(h-BN) particles onto the zinc anode *** cycling,stabilized zinc fills the interstices of scattered h-BN,resulting in a more favorable(002) ***,zinc dendrite formation is effectively suppressed,leading to improved electrochemical *** zinc with scattered h-BN in a symmetric cell configuration maintains stability 10 times longer than the bare zinc symmetric cell,lasting 500 ***,in a full cell configuration with α-MnO2cathode,increased H+ion activity can effectively alter the major redox kinetics of cycling due to the presence of scattered h-BN on the zinc *** shift in H+ion activity lowers the overall redox potential,resulting in a discharge capacity retention of 96.1% for 300 cycles at a charge/discharge rate of 0.5 *** study highlights the crucial role of surface modification,and the innovative use of bulk h-BN provides a practical and effective solution for improving the performance and stability.
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