Electromagnetic radiation is identified as a critical environmental hazard in modern industry, posing considerable threats to human health and the ecosystem. Lightweight, broadband microwave-absorbing materials are therefore considered essential for EM-safety strategies. Inspired by the hierarchical pore architecture of natural coral, this study employed melamine foam as a porous skeleton and successfully fabricated an ultralight, coral-like porous C/Ni/BNQDs aerogels via a simple vacuum impregnation and carbonization process, with densities below 0.02 g cm-3. By regulating the concentration of the precursor carbon source, a bio-inspired coral-like hierarchical architecture is induced. This architecture not only effectively prolongs the propagation path of incident electromagnetic waves, thereby promoting multiple scattering, but also creates numerous heterogeneous interfaces that enhance interfacial polarization loss, thereby optimizing the impedance matching and electromagnetic wave loss capacity of the material. The resultant aerogel delivered a minimum reflection loss (RLmin) of-36.85 dB at 11.60 GHz and an effective absorption bandwidth (EAB) of 2.08 GHz at a thin thickness of 1.5 mm. In addition, the material exhibited high-frequency sound absorption. And the absorption coefficient exceeded 0.56 above 2.4 kHz, enabling integrated microwave-noise mitigation. This work provides a novel strategy for constructing lightweight, high-efficiency, and structurally tunable biomimetic electromagnetic wave absorbers. The developed material shows promising application prospects in next-generation communication technologies and multifunctional electromagnetic protection.

Thermoplastic elastomers (TPEs) offer excellent processability, fatigue resistance, and design flexibility for flexible protection and smart sensing. Yet raising hard-phase content or crosslink density to toughen them often suppresses chain mobility and weakens self-healing. Inspired by base pairing that stabilizes the DNA double helix, a supramolecular poly(urethane-urea) (PUU) elastomer is constructed via an amino-module assembly on a fixed PCL-IPDI backbone. Different amine chain extenders are installed and then branching crosslinking is performed, thereby adjusting the density and bond-energy hierarchy of interchain, hierarchical hydrogen bonds to balance high strength and recoverable elasticity. A representative PUU-ADH film shows 95.3% transmittance, true stress of 1.07 GPa, elongation at break of 1223%, and toughness of 437.5 MJ m-3. It can recover 95.7% of its strength at room temperature and retains 93% of its initial strength after four solvent recovery cycles. The film efficiently buffers impacts on brittle substrates and, after LiTFSI doping, serves as a flexible strain-sensing matrix. This concise assembly route synergistically optimizes optical, mechanical, and cyclic durability without permanent chemical crosslinks, offering a broadly applicable molecular design paradigm for high-performance, recyclable elastomers.

Under cold-climate conditions, ice accumulation on transmission line surfaces poses a severe threat to grid safety, while conventional anti-/de-icing strategies are limited by high energy consumption, low de-icing efficiency, and complex maintenance requirements. To address these challenges, a SiO2/AgQDs anti-/de-icing composite coating with excellent anti-icing performance was constructed on aluminum alloy substrates via in-situ chemical reduction coupled with sol-gel processing. The optimized MS/Ag-75 coating exhibited superhydrophobicity with a water contact angle of 163.2 degrees, which endowed the surface with excellent self-cleaning and anti-fouling capabilities, while concurrently extending the droplet freezing time to 489 s, approximately ten times that of bare aluminum. Benefiting from the synergistic effect of the nano-SiO2 light-trapping architecture and AgQDsmediated localized surface plasmon resonance (LSPR), the coating surface reached 90.7 degrees C within 120 s of illumination, enabling complete ice removal in only 44 s. Importantly, the coating also displayed the lowest selfcorrosion current density (Icorr=0.062168 mA/cm2), confirming enhanced corrosion resistance. This study validates the significant advantage of AgQDs in creating high-performance photothermal surfaces and elucidates the integrated anti-icing, de-icing, and corrosion-protection mechanisms, providing a low-cost, high-performance design paradigm with broad application potential and significant practical relevance.

The aerospace industry urgently demands high-performance electromagnetic wave absorbing materials that maintain stability under extreme temperatures. In this work, Fe-Co co-doped SiC nanofibers were developed via precision electrospinning and controlled pyrolysis. An atomic-scale dispersion of Fe and Co was achieved through a metal-polymer coordination strategy. These dopants function as active sites that promote phase nucleation, while also serving as electron donors to enhance polarization loss. Subsequent tuning of doping concentration enables synergy among conductive loss, polarization loss and magnetic loss. The optimized nanofiber exhibits outstanding performance, demonstrating an RLmin of -58.49 dB at 14.88 GHz with a 1.25 mm thickness, as well as a maximum EAB of 4.77 GHz. Remarkably, the material also demonstrates desirable thermal stability in argon atmospheres up to 1200 degrees C, even after oxidation at 800 degrees C for 30 min, it retains an RLmin of -26.35 dB and EAB of 3.04 GHz. This work establishes a new paradigm in doping-induced phase engineering, providing transformative strategy for developing next-generation extreme-environment electromagnetic wave absorbers.

For reducing adverse impact, the diversity-validity tradeoff curve approach (De Corte et al., 2007) provides sets of selection predictor weights that can often substantially enhance diversity (i.e., increase adverse impact ratio and number of minority job offers), with no loss of job performance in comparison to unit weights (Wee et al., 2014). A key limitation of this diversity-enhancing approach is the tendency for tradeoff curves to shrink, leading to lesser job performance and diversity outcomes upon cross-validation (Song et al., 2017). The current article evaluates and compares tradeoff curve shrinkage (both validity shrinkage and diversity shrinkage) using three types of validity evidence/calibration studies: (a) a local validity study, (b) a meta-analysis (Schmidt & Hunter, 1977), and (c) a Bayes analysis with empirical priors, which is a weighted combination of a local study with a meta-analysis (Newman et al., 2007). Using simulation, we show conditions where each approach performs best, offering recommendations on ideal methods for diversity improvement (reducing shrinkage and maximizing cross-validity) in local selection settings. Results guide selection practitioners in novel methods (integrating the advantages of meta-analysis, Bayes analysis, and Pareto-optimal weighting) to best combine predictors to simultaneously achieve job performance and diversity objectives in local selection settings. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

The development of high-temperature electromagnetic wave (EMW) absorbers balancing conductive loss and polarization loss remains a key challenge for aerospace applications. Here in this study, we propose a crystal phase engineering strategy to prepare MXene-derived-TiC/SiC (M-TiC/SiC) composite fibers via precise electrospinning and controlled pyrolysis. During this process, Ti3C2Tx nanosheets undergo in-situ confined transformation into oriented TiC nanocrystals embedded within the fiber matrix, creating tunable heterogeneous interfaces among crystalline TiC and SiC, amorphous SiOxCy, and turbostratic carbon. This compositiondependent design simultaneously optimizes conductive networks and polarization relaxation. Low Ti3C2Tx loading (TSF-3) yields incomplete conductive pathways, while excessive loading (TSF-9) causes impedance mismatch. The optimized specimen (TSF-7) achieves exceptional EMW absorption performance, with a minimum reflection loss (RLmin) of -67.18 dB at 9.92 GHz and a maximum effective absorption bandwidth (EAB) of 2.72 GHz. Dielectric analysis confirms interfacial polarization as the dominant loss mechanism, driven by interfacial charge accumulation-separation and defect-induced dipole interactions. Crucially, the material maintains stability below 600 degrees C, retaining an RLmin of -62.27 dB after oxidation. Gradual attenuation occurs at higher temperatures, establishing an operational limit below 1000 degrees C. This work sets an example for designing thermally stable EMW absorbers through heterogeneous interface engineering, offering transformative potential for applications in extreme environments.

Hydrogels frequently suffer from low-temperature freezing, high-temperature dehydration, and compromised environmental stability. In contrast, organogels demonstrate superior environmental tolerance and structural designability. Herein, a polyurea organogel (denoted PUA-DxTy) featuring a trident-chain molecular architecture was synthesized through the polymerization of isocyanate and polyetheramine. By varying the number of functional groups per polyetheramine, dynamic control over crosslinking density and mechanical properties was achieved. The optimized PUA-D8T2 sample exhibited a tensile strength of 178.33 kPa and an ultrahigh elongation of 1838 %, representing 2.3-fold and 4.1-fold enhancements over conventional hydrogels, and significantly surpassing many existing organogels. Besides, this organogel also integrates multifunctional capabilities including strong adhesion to diverse substrates, retention of flexibility/elasticity under harsh conditions, excellent solvent recyclability, and autonomous self-healing enabled by dynamic hydrogen-bond networks. A flexible sensor fabricated by coating the gel surface with a graphene conductive layer accurately monitors multiscale human motions (e.g., finger flexion, wrist rotation) and enables encrypted information transmission via Morse code. This work establishes a novel organogel material platform for environmentally stable flexible electronics, demonstrating significant potential in next-generation electronic skins through its synergistic combination of multifunctional capabilities.

In the study of personnel selection to enhance organizational diversity, Pareto-optimal predictor weights are designed to simultaneously optimize the diversity and job performance of new hires. One aspiration for this approach is to access stronger combinations of diversity and performance outcomes by shifting the diversity-validity trade-off curve outward. The current work examines the role of a particular set of predictors-vocational interests-for their capacity to shift the Pareto trade-off curve outward, creating superior diversity-validity outcome pairings. Empirical results based on meta-analytic estimates suggest that novel diversity benefits (at no loss in terms of validity) can be observed in two sets of scenarios: (a) when selecting on high levels of social or conventional vocational interests (i.e., when individuals enjoy social or conventional tasks) specifically when such interests are relevant to the job, and (b) when selecting on high levels of realistic, investigative, or artistic disinterests (i.e., when individuals find realistic, investigative, or artistic tasks aversive) specifically when such disinterests are relevant to the job. Implications for improving diversity through hiring on vocational interests and vocational disinterests, while simultaneously optimizing on job performance, are discussed. (PsycInfo Database Record (c) 2026 APA, all rights reserved).

The PZS surface can provide excellent photothermal deicing performance and corrosion resistance for aluminum alloys.

With the rapid advancement of electronic information technology, the issue of electromagnetic radiation has become increasingly severe. It is urgent to develop high efficiency microwave absorber with excellent microwave absorbing performance. The construction of complex and diversified hierarchical porous structure is regarded as a promising way to enhance electromagnetic wave absorption. In this study, leveraging the porous architecture of melamine foam, a BN@C composite material featuring a hierarchical pore structure comprising larger and smaller pores, both residing in the micrometer regime, was synthesized via a high-temperature-assisted sol-gel method, using polyvinyl alcohol as the carbon precursor and boron nitride (BN) as the filler. By optimizing the molar ratio of raw materials, BN@C composites exhibiting superior microwave absorption performance were successfully obtained. When the matching thickness was set at 2.5mm and 1.5mm, respectively, the minimum reflection loss (RLmin) reached -29.12dB, and the maximum effective absorption bandwidth (EAB) was 5.44GHz, demonstrating a broad application prospect in the realm of microwave absorption. This research not only provides novel insights into enhancing the microwave absorption capabilities of carbon-based materials but also lays a material foundation for the development of electromagnetic radiation protection and stealth technologies.

The rapid development of electronic information technology has led to increasingly prominent electromagnetic wave pollution, which poses a serious threat to human health and the normal operation of precision instruments. Therefore, it is imperative to develop high-performance electromagnetic wave absorbing materials. Inspired by the unique light reception enhancing structure of sea urchins in nature, this study had constructed a biomimetic sea urchin-like (BNf/BNNS)@C hierarchical porous aerogel with enhanced electromagnetic wave absorption performance. Results demonstrated that adjusting the freezing temperature can effectively control the size of the sea urchin microstructure. The biomimetic sea urchin-like (BNf/BNNS)@C hierarchical porous aerogel exhibits multiple electromagnetic wave loss mechanisms and excellent impedance matching, thus showing outstanding electromagnetic wave absorption performance. Its effective absorption bandwidth reached 7.2 GHz at a thickness of 2.5 mm, and the minimum reflection loss value could reach -47.69 dB at a thickness of 4 mm. This was attributed to the multiple reflections and scattering of electromagnetic waves by the sea urchin-like hierarchical porous microstructure, as well as the interface polarisation loss caused by heterogeneous composition. The synergistic effect of these two factors improved the aerogel's ability to absorb electromagnetic waves, showcasing broad application prospects. The study provides insights for the design and development of lightweight and efficient new biomimetic electromagnetic wave absorbing materials.

Clavicle emergency fixation can prevent fractured end from piercing heart and lung organs, which is crucial for wounded life. Clavicle with complex structure, great individual differences, and adjacent to important organs, which places high-requirements on performance of fixation materials. Developing advanced clavicle fixation material is a prominent hot-topic in the field of emergency-engineering. We prepared a Polymethyl-methacrylate (PMMA) "bone-Locking" foam dressing via novel polymer foaming process. Innovatively used aliphatic-acid and bio-polar macromolecule nanoparticles to adjust structure in non-traditional self-curing polymer melts to achieve high-performance. Stearic acid coating was prepared on the surface of foaming agent can delay nucleation period, increasing the initial Polymer-Bubble interface viscosity and effectively retard nuclei growth and escape. Nano-chitosan was compounded synchronously to induce in-situ nucleation and construct polar hydrogen bonds between chains, improve the crystallinity of PMMA matrix, reduce the relaxation ability of PMMA molecular chains and increase the interface viscosity again to inhibit nuclei growth and escape, realizing spontaneous coordination between viscosity and the bubble holes formation process. Obtained high-performance foam with uniform and regular bubble holes structure eventually. More, Dynamic Dual-Variable Field Bubble-Growth Dynamics was proposed, revealing the Bubble-Growth behavior synergistic driven by Viscosity and Temperature theoretically, providing reference for improving theory in polymer foaming field. Prepared foam dressing can be directly and softly coated on clavicle and spontaneously conform to the contour of clavicle with remarkable precision, then quickly (3.5 min) curing into a lightweight (0.57 g/cm3), high-strength (40.5 MPa), breathable (224.73 mm/s) "Armor", showing great application value in wound emergency engineering. The developed foaming method and theory provide technical and theoretical value for polymer foaming system. The foam dressing provides a promising new scheme for fixing various wound sites and ensuring the life safety of the wounded at the emergency scene.

Pitting corrosion caused by sulfate-reducing bacteria (SRB) significantly shortens the lifespan of metallic pipelines. Antibacterial coatings containing S2--responsive drug-loaded nanocontainers represent a promising method to mitigate SRB corrosion. However, the challenge of balancing rapid bactericide release with continuous antibacterial effect limits their practical application. In this study, a S2- and pH dual-responsive periodic drug release system was developed based on raspberry-like mesoporous silica intelligent nanocontainers (BAC-RMSNs@Cu-BTA) loaded with bactericide benzalkonium chloride (BAC) and blocked by copper-benzotriazole nano valves (Cu-BTA). When S2- concentration exceeded 0.5 mM or pH fell below 6.3, the intelligent nanocontainers accelerated drug release. Under simultaneous S2- and pH stimulation, the drug release rate was increased by 91 %, compared to isolated S2- stimulation. The sustained release duration exceeded 384 h, which was more than twice that of existing S2--responsive nanocontainers. The reversible dissociation-complexation transition of Cu-BTA nano valves and the adsorption effect of the raspberry structure facilitated an inhibition of drug release after the stimulation disappeared, thereby enabling cyclic drug release and extending the antibacterial duration. The epoxy coating embedded with BAC-RMSNs@Cu-BTA showed excellent repeatable sterilization, long-term antibacterial adhesion and corrosion medium barrier ability in the SRB environment. Based on active intelligent sterilization and passive physical barrier effects, the composite coating's resistance to SRB corrosion in the simulated internal environment of pipelines was 14.6 times that of coating containing BAC-RMSNs. This study aims to provide valuable insights for the design of innovative long-acting antibacterial coatings.

Vocational interest measurement has long played a significant role in work contexts, particularly in helping individuals make career choices. A recent meta-analysis indicated that interest inventories have substantial validity for predicting career choices. However, traditional approaches to interest inventory scoring (e.g., profile matching) typically capture broad, or average relations between vocational interests and occupations in the population, yet may not be accurate in capturing the specific relations in a given sample. Machine learning (ML) approaches provide a potential way forward as they can effectively take into account complexities in the relation between interests and career choices. Thus, this study aims to enhance the accuracy of interest inventory-based career choice prediction through the application of ML. Using a large sample (N = 81,267) of employed and unemployed participants, we compared the prediction accuracy of a traditional interest profile method (profile matching) to a new machine-learning augmented method in predicting occupational membership (for employed participants) and vocational aspirations (for unemployed participants). Results suggest that, compared to the traditional profile method, the machine-learning augmented method resulted in higher overall accuracy for predicting both types of career choices. The machine-learning augmented method was especially predictive of job categories with high base rates, yet underpredicted job categories with low base rates. These findings have practical implications for improving the utility of interest inventories for organizational practice, contributing to areas such as employee development, recruitment, job placement, and retention.

MAB phases represent a class of ternary layered transition metal borides that are structurally analogous to the well-established MAX phase, and they exhibit promising potential in various applications, including mechanics, catalysis, wave-absorption, batteries, and high-temperature environments. However, only a few MAB phases have been experimentally synthesized, making the exploration of new phases a pressing challenge. In this study, three potential Ti-based MABs (Ti2AlB2, Ti3AlB4 and Ti4AlB6) are predicted via first-principles calculations and density functional theory (DFT). The computational analyses confirm the thermodynamic and mechanical stability of these phases, with their lattice parameters determined, providing valuable references for future experimental endeavors. Crystal structure analysis reveals a distinctive feature of MABs, the B-B zigzag chains, which are absent in MAX phases, endowing them with superior in-plane strength. Mechanical analyses show that these compounds exhibit elastic anisotropy, which is closely related to the microstructure of Ti-B slices. Electronic studies confirm the metallic nature of these compounds, while the highly reactive Al atomic layer suggests a significant potential for selectively etching to yield two-dimensional (2D) MBene. Optical studies indicate that these compounds possess excellent polarization and dielectric loss capabilities, making them promising candidates for next-generation materials in photo-thermal conversion, sensing and wave-absorbing devices.

Although the excellent electromagnetic wave (EMW) attenuation ability of Ti3C2Tx has been wildly accepted, its high dielectric constant tends to induce severe impedance mismatching at interfaces. In this paper, PDDA modified SiCnw was electrostatically assembled with the negatively charged Ti3C2Tx nanosheet, for the purpose of decreasing and tuning the complex permittivity of Ti3C2Tx, while constructing a large number of heterogenous interfaces to strengthen the polarization loss. Subsequently, a lightweight and porous Ti3C2Tx/SiCnw hybrid aerogel was successfully obtained by a directional freeze-drying process, which shows enhanced mechanical and wave-absorbing properties compared with pure Ti3C2Tx aerogel, with a strong absorption (-44.9 dB) and a broad bandwidth (9.5 GHz) in the frequency range of 2-18 GHz, as well as good structural stability and mechanical resilience. The excellent wave-absorbing performance is the synergistic result of well-matched impedance, enhanced multiple polarization losses (dipolar polarization, defect-induced polarization and interfacial polari-zation) and mild conduction loss. This study explores the specific ways to regulate the EMW loss mechanism, which is of great significance for the development of a new generation structure-function integrated absorber.

Ceramic aerogels exhibit great potential in thermal insulation due to their ultralow density, high porosity, ultralow thermal conductivity, and good chemical stability. However, the application of traditional oxide ceramic aerogels in extreme environments is limited. Herein, we proposed an ultra-high temperature ceramic (UHTC) aerogel designed by ZrC nanofibers welded with carbon nanoparticles. Among them, the flexible ZrC nanofibers, as basic 1D assembly blocks, were assembled into a stable 3D porous structure through the carbon nanoparticles converted by the resorcinol formaldehyde resin (RF). The obtained multiscale fibrous framework endows aerogel with ultralow density (0.0133-0.0282 g cm(-3)), high porosity (99.73-99.07%), good compressive strength (0.7-18.9 kPa), ultralow thermal conductivity (0.185-0.249 W m(-1) K-1), and high-temperature stability at 1400 degrees C under vacuum. These comprehensive properties can be tailored by adjusting the RF content. The study provides promising perspectives for ZrC nanofiber aerogels in high-temperature insulation applications.

Electromagnetic metamaterials have demonstrated immense potential in the development of novel high-temperature wave-transparent materials, yet the requirements of their intricate structural design and strict stability pose dual challenges, particularly in high-speed radome applications. A strategy involving the synergistic modulation of boron nitride (BN) by dual metallic elements of Ca and Al (0.5Ca-0.5Al-BN) was proposed in this study, which elegantly integrates the advantages of metamaterial-like split ring resonator (SRR) features and h-BN's oxidation resistance enhancement. The highest wave transmittance at room temperature reaches 0.96 at 2-18 GHz. Notably, Al elements play a pivotal dual role in: (1) facilitating the solid solution of Ca to optimize the formation of metamaterial-like structures and (2) generating an amorphous Al2O3 protective layer to preferentially defend against surface oxidation. This further prevents the breakdown of metamaterial characteristics at high temperatures, thereby striking a dual balance between the preservation of metamaterial-like structures and the high temperature stability of BN. Notably, 0.5Ca-0.5Al-BN retains its metamaterial-like characteristics, with a low permittivity not exceeding 2 even after exposure to 1500 degrees C oxidation. The corresponding wave transmission rate remains above 0.7 in most frequency bands at incidence angles of 0 degrees, 10 degrees, and 30 degrees, ensuring superior wave-transparent properties. Furthermore, 0.5Ca-0.5Al-BN exhibits great hydrophobicity, benefiting resistance to rain and snow erosion. By integrating the merits between fundamental materials and metamaterials, this work transcends the limitations of conventional metamaterial design and offers fresh insights and empirical support for developing high-speed aircraft radome materials.

Efficient heat dissipation is essential to further improve the integration of high-power electronic packaging devices. Three-dimensional BN networks with high-density thermal conductive paths were designed as the heat transfer skeleton of thermal interface materials. 3D networks with high-density thermal conductive paths inlaid between oriented BN paths were constructed using precursor self-assembly and freeze-drying to improve the thermal conductivity of polymeric materials. The results show that high-density thermally conductive paths have stronger polymer-enhanced thermal conductivity than directional thermal paths and compared with pure TPU, the thermal conductivity of TPU/BN-2 under low BN filling content (10%wt) is increased by 250 % and 286.5 % in the through surface and flat surface respectively. This work provides new ideas for the preparation of polymer composites for thermal interface materials in electronic packaging and integrated circuits with excellent thermal management properties.

The excellent recyclability of SiC foam renders it an ideal catalyst in the field of photocatalytic degradation, however to further improve its photocatalytic efficiency remains a major challenge in current research. In this regard, a honeycomb-like porous SiC foam was successfully constructed through freeze-drying and polymer-to-ceramic derivation method, with two-dimensional Ti3C2Tx nanosheets anchored on its three-dimensional framework. Their photocatalytic performances were evaluated by the degradation of methylene blue (MB) under visible-light irradiation. All Ti3C2Tx/SiC hybrid foams show superior photocatalytic degradation capability compared with SiC foam, with a highest removal rate (adsorption and degradation) reaching 94.4% for TSF-4, denoting an increasement of 50.4%. Even after five cycles, the removal rate remained at 91.4% with only a slightly loss of 3%, suggesting its excellent recycling performance. These desirable results stem from the unique structural design, in which the porous structure facilitates the contact between catalyst and pollutant, while the Ti3C2Tx/SiC heterojunction promotes effective separation of photogenerated carriers. This work paves the way for the development of lightweight, efficient and easily recyclable photocatalyst for wastewater purification.