Search Results (1,157)

Winter-sport wearable technology spans motion and force sensing, physiological monitoring, thermal intervention, flexible bioelectronics, equipment-integrated systems, and safety technologies. This structured critical review synthesizes an evidence base of 80 unique scholarly records identified through a systematic Boolean search executed on 15 August 2026 in four standard academic databases (Scopus, Web of Science Core Collection, PubMed, and IEEE Xplore), which retrieved 1466 records (808 unique after cross-database deduplication), supplemented by backward/forward citation chasing for eligible records not indexed in these databases. The corpus comprises 32 direct winter-sport records, 15 cold-context translational records, 14 contextual validation records, and 19 secondary/background records. For empirical records containing sufficient information, validation maturity was additionally coded on a seven-stage ordinal scale; 54/80 records could be staged without inference, whereas 26/80 were retained as ‘not staged’. The corpus shows that translational maturity is strongly domain dependent. Motion and kinematic sensing frequently reaches real winter-sport training or field settings, whereas antifreezing hydrogels and flexible bioelectronics have advanced substantially in conductivity, adhesion, self-healing, conformability, and low-temperature operation but remain concentrated at material, integrated-device, and human-demonstration stages. The five recurring constraints—thermodynamic, interface, ecological, connectivity, and equity—are therefore reframed as non-equivalent, context-dependent dimensions rather than universal burdens. The revised architecture also distinguishes digitally mediated sense–decide–actuate loops from material-native stimulus–response and hybrid pathways, while continuous remote monitoring is treated as one option within an energy–communication trade-space. The resulting framework links evidence type, validation depth, system interface, and deployment context without equating commercial availability with scientific validation. Full article

Controlling fibril generation and retaining their morphology during secondary thermal processing remain critical challenges for in-situ microfibrillar composites. Herein, we propose a “melt blending–hot drawing–low-temperature injection” cascade strategy to fabricate polypropylene/polyamide 66 (PP/PA66) composites. By decoupling the synergistic effects of draw ratio (λ) and compatibilizer (PP-g-MAH), an optimal fibrillation window was identified (15 wt% PA66, 3 wt% compatibilizer, λ = 9), which balances interfacial tension and viscous drag to form a dense, oriented microfibrillar network. This solid-state network accelerates matrix nucleation (though slightly restricting overall crystallinity) and induces gel-like rheological behavior through severe structural confinement. Crucially, we demonstrate that conventional high-temperature injection (265 °C) triggers Rayleigh instability, causing fibril break-up and mechanical degradation. Conversely, low-temperature injection (210 °C) successfully achieves the “geometric freezing” of the metastable fibril network. Consequently, the optimal composite exhibits maximized static strength (45.3 MPa) and a continuous, significant leap in notch impact toughness (10.16 kJ/m²). This work bridges the gap between flow-induced fibrillation and thermodynamic morphological retention, offering a robust physical mechanism for high-performance polyolefin composites. Full article

Effective iron removal from highly acidic leachates without neutralizer addition is a long-standing challenge in hydrometallurgy. For Cu-Co-bearing pyrite cinder, we demonstrate that a cyclic leaching process achieves this outcome. Operating entirely without neutralizers, the process consumed 96% of residual acid, enriched Cu and Co 4.76- and 3.88-fold, and removed 48.2% of iron, all while maintaining pH below 1.5 across four closed-loop cycles. Thermodynamic analysis reveals that Fe³⁺-${\mathrm{SO}}_4^{2-}$ complexation suppresses free Fe³⁺ to approximately 10⁻⁸ mol/L, ruling out conventional hydrolytic precipitation and directing precipitation towards schwertmannite-type basic ferric sulfate (Fe₈O₈(OH)₆SO₄). The formation of this sulfate-bearing Fe precipitate is consistent with the thermodynamic analysis, the iron mass balance, and a 176% increase in solid-phase sulfur. This neutralizer-free strategy offers a sustainable paradigm for recovering critical metals from iron-rich secondary resources. Full article

The imperative to mitigate climate change has accelerated the development of Carbon Capture, Utilization, and Storage (CCUS) technologies, particularly CO₂ hydrogenation into high-value chemicals and alternative fuels. This work evaluates the fundamental thermodynamic limitations and the primary directions of CO₂ conversion, with a primary focus on methanation, alongside related pathways such as methanol synthesis and the reverse water-gas shift (RWGS) reaction. To overcome the high kinetic barriers of CO₂ activation, various catalytic systems are analyzed. While noble metal catalysts exhibit high catalytic performance, nickel-based catalysts serve as a viable and cost-effective alternative. To overcome nickel’s susceptibility to thermal sintering and coking, advanced bimetallic and multimetallic formulations are being developed to enhance structural stability and selectivity. These advancements are crucial for producing Synthetic Natural Gas (SNG) and sustainable aviation fuels (SAF). Ultimately, the objective of this comprehensive review is to systematically summarize recent advancements in catalyst design, critically analyze the advantages and fundamental bottlenecks of distinct catalytic systems, and outline prospective paths for the efficient industrial-scale production of sustainable alternative fuels. Full article

The equation of state (EoS) is very helpful for the prediction of both high-pressure phase diagrams and fundamental properties. However, the general cubic EoS has low prediction accuracy for compressed and saturated liquid densities and the pure component critical density, especially for highly polar substances like water and alcohol. Therefore, an entropy-based solubility-parameter-translated Soave–Redlich–Kwong equation of state (eSPT-SRK EoS) was developed that incorporates two correction parameters that can be linearly correlated with the critical compressibility factor. The correlated values gave an average relative deviation (ARD) value of 7.9% at the critical density for a database of 28 widely used chemical compounds. Estimation of liquid densities at standard temperature and pressure conditions (298.2 K and 101.3 kPa) gave an average ARD value of 6.1% compared with the original SRK EoS value of 16.6%. The eSPT-SRK EoS was applied to calculate thermodynamic properties (entropy, fugacity, cohesive energy density) and was found to be reliable for estimating entropy-based Hansen-type solubility parameters (eHSPs). The eSPT-SRK EoS was compared with a corrected form of the entropy-based solubility-parameter-translated Peng–Robinson EoS (eSPT-PR EoS), and both functional forms were found to give reliable eHSP values. Therefore, the formulation methodology can be applied to other cubic equations of state for specialized fluid mixtures. Full article

Boundary-layer atmospheric stability, wind-shear variability, and thermodynamic forcing are all important factors for the initiation, intensification, and transport of dust storms. But there is limited knowledge of the quantitative evaluation of bulk-layer atmospheric stability and the relation between wind-driven dust dynamics and atmospheric stability in arid and semi-arid regions. In this research, a hybrid AI–meteorology framework, HyMet-Fusion, is presented that combines visual information derived from satellite observations with physics-based indicators of atmospheric stability to evaluate atmospheric stability during dust storm events over Iraq. The proposed framework is based on the use of deep features extracted from the satellite imagery through a frozen EfficientNetB0 backbone, combined with indicators derived from the ERA5 pressure level data for the atmosphere, such as the Bulk Richardson Number (Bulk Ri), the Wind Shear (WS) and the Dry Air Index (DAI). The two branches were merged using a late fusion (0.75 physics/0.25 image) and each hour was classified into three atmospheric stability conditions: Relatively Stable, Moderately Unstable and Unstable. The overall hourly accuracy using a Leave-One-Event-Out (LOEO) cross-validation scheme, where each dust event was used for independent testing and no dust event was used for training, was 72.4%, with 81.2% accuracy for the dominant stability state and 92.2% correct assessment of the unstable condition time for the severe dust events. Inaccuracies were mainly (66%) in the conservative direction (more instability). Unstable atmospheric conditions were also found to be associated with all severe dust storms and coincided with higher wind shear, lower Bulk Ri values and higher thermodynamic variability. Moderate and light dust events were primarily associated with transitional and relatively stable atmospheric conditions, and differed between the various regions, primarily in Kirkuk and Nasiriyah. Correlation analysis showed that wind shear had the highest correlation with atmospheric instability (r = 0.92), followed by DAI (r = 0.90) and Bulk Ri (r = −0.75). In addition, the wind shear also increased significantly from light to severe dust events at all stations investigated, showing that wind shear is a critical factor for turbulent mixing, vertical momentum exchange and dust uplift processes. The results suggest wind shear is the leading dynamics mechanism for bulk-layer instability in Iraqi dust storms. The findings highlight the complementary benefit of using physics-based atmospheric indicators embedded with deep learning satellite image analysis. The HyMet-Fusion system can be used as a transferable method for observing wind-driven instability of the atmosphere and related dust hazards, which could be employed in boundary-layer meteorology, air-quality forecasting, aviation safety and environmental risk assessment in arid and semi-arid areas. Full article

As the global energy sector and maritime industry transition toward carbon neutrality, Carnot batteries have emerged as a critical technology for flexible, long-duration energy management. Carnot batteries, which operate on a Power-to-Heat-to-Power principle, present a highly promising alternative to conventional electrochemical batteries. The present study provides a review of Carnot battery architectures, systematically evaluating their thermodynamic cycles, working fluids, Thermal Energy Storage media and key turbomachinery components. A comparative assessment of the current literature illustrates that system selection requires balancing round-trip efficiency, Energy Storage Density and Technology Readiness Level. According to the findings of the present study, high-temperature Brayton cycles offer robust baseline efficiencies of 60–80% whereas subcritical Rankine cycles benefit from commercial maturity and can achieve efficiencies exceeding 200% when integrated with cryogenic heat sinks like LNG. It should be clarified that efficiency values exceeding 100% represent “Apparent Round-Trip-Efficiencies (RTE)” resulting from the thermodynamic contribution of external exergy streams, such as LNG cryogenic cold, rather than standalone cycle efficiencies, which are strictly below 100%. In addition, volumetric energy density varies drastically based on the physical phase of the storage medium, scaling from under 1 kWh/m³ for unpressurized water to over 385 kWh/m³ for advanced thermochemical systems. Although most configurations currently remain in the prototyping phase, the technology holds transformative potential for the maritime sector. Carnot batteries can deliver a self-contained, zero-emission electrical power supply to cover the vessel’s electrical load requirements during harbor stays and transit within Emission Control Areas (ECAs) by dynamically capturing and storing shipboard waste heat during open sea transit. Full article

In this work, the electrochemical nucleation and growth mechanism of cobalt onto a polycrystalline silver electrode was investigated to analyze its initial stages of deposition in aqueous media. Electrodeposition was carried out using an aqueous solution containing 0.01 M CoSO₄ and 1 M Na₂SO₄ at pH 7.0 and 25 °C. Cyclic voltammetry study revealed that cobalt deposition is an irreversible process controlled by Co²⁺ mass transport. Current density–time transients obtained from potentiostatic steps were analyzed using the Scharifker–Hills and Hermann–Tarallo models. The results showed that electrodeposition follows a three-dimensional progressive nucleation mechanism with diffusion-controlled growth, in which active sites are continuously created during the process. Kinetic parameters, such as the nucleation rate, density of active sites, and saturation density, increased markedly at more negative cathodic potentials. From the transient analysis, the Co²⁺ diffusion coefficient was calculated as 3.3 × 10⁻⁶ cm² s⁻¹. Furthermore, analysis based on atomistic nucleation theory yielded a critical nucleus size of zero and a Gibbs free-energy barrier of 1.54 × 10⁻²⁰ J nucleus⁻¹, suggesting favorable thermodynamic conditions for cobalt nucleation on polycrystalline silver. Full article

Solar-driven interfacial evaporation (SDIE) represents a highly promising technology for decentralized desalination and wastewater treatment, yet its practical industrial deployment is severely constrained by the intrinsic intermittency of natural solar irradiance and nocturnal salt crystallization. To smooth energy fluctuations and achieve all-weather, continuous freshwater output, integrating solid–liquid phase change materials (SLPCMs) into SDIE has evolved into a system-level paradigm shift driven by advanced spatiotemporal thermal-mass management. This review systematically summarizes recent breakthroughs in micro-to-macro structural engineering for phase-change-coupled SDIE systems. Spatially, advanced microscopic encapsulation strategies such as 3D matrices, core–shell architectures, and solid–solid transitions eradicate molten PCM leakage and reconstruct heat transfer networks, while macroscopic configurations involving sandwich structures and 3D directional channels realize functional zoning to maximize thermal localization. Temporally, the controlled nocturnal release of stored latent heat establishes a cross-timeline energy relay, sustaining dark evaporation and activating interfacial hydrodynamics via Marangoni convection and thermophoretic diffusion to prevent salt clogging under extreme conditions. Furthermore, cross-disciplinary integrations for water-electricity co-generation, targeted resource recovery, and environmental remediation are comprehensively discussed. Finally, critical engineering challenges regarding scalability, cost-effectiveness, and condensation system integration are addressed, offering forward-looking perspectives on coupling thermal storage with physical catalysis to transcend classical thermodynamic limits. Full article

Poor aqueous solubility remains one of the most persistent challenges in pharmaceutical development, limiting clinical translation and requiring innovative formulation strategies; approximately 40% of newly discovered pharmaceutical compounds are affected, underscoring the scale of the problem. Emulsion-based delivery systems overcome this limitation by maintaining drugs in a dissolved state, increasing absorption surface area, and enabling controlled release; however, conventional emulsions face thermodynamic instability and coalescence challenges. Cellulose and nanocellulose—cellulose nanocrystals (CNCs), cellulose nanofibers (CNFs), and bacterial cellulose (BC)—have emerged as sustainable, biocompatible alternatives to synthetic surfactants for stabilizing emulsions via Pickering mechanisms involving irreversible adsorption of solid particles at the oil–water interface. This review synthesizes 142 references across eight application themes: fundamentals and history, emulsion templating, drug encapsulation, antimicrobial and pathogen applications, vaccine adjuvants, topical and transdermal delivery, commercial translation, and regulatory gaps. Rather than treating all sources equally, 37 primary studies are examined in depth through structured critical-appraisal tables organized by system type, goal, key result, and limitation; the remainder are synthesized at the pattern level. A key mechanistic distinction is identified between BC as a standalone biomedical material (used in wound dressings, tissue scaffolds, and drug delivery membranes) and BC as a source for Pickering-emulsion stabilizers after disintegration into nanocrystals or nanofibrils. The review’s overall assessment is that the fundamental materials science of cellulose Pickering emulsions is mature and consistent across sources, while the translational evidence, including in vivo confirmation of drug release performance, biofilm-relevant antimicrobial testing, standardized nanocellulose characterization, and up-to-date intellectual property mapping, remains the binding constraint on clinical and commercial adoption. Six specific, evidence-linked research priorities are identified to advance cellulose emulsions toward regulatory approval and clinical use. Full article

Liquid hydrogen (LH₂) has been regarded as an ideal carrier for large-scale and long-distance hydrogen energy storage and transportation due to its high gravimetric hydrogen storage density, rapid refueling efficiency and favorable safety performance. However, the physical properties of LH₂, such as low viscosity and high volatility at the ultra-low temperature of −253 °C, cause complex thermodynamic problems during the refueling process—including drastic phase transitions, concentrated thermal stress, and two-phase flow instability—which act as bottlenecks restricting the large-scale application of LH₂. In this paper, research advances achieved domestically and internationally in recent years are reviewed in detail with respect to thermodynamic issues occurring in the ultra-low-temperature LH₂ refueling process. Research achievements concerning the thermodynamics of LH₂ refueling are classified, summarized and discussed from the perspectives of theoretical thermodynamic analysis, numerical simulation, experimental investigation and refueling process optimization strategies for LH₂ refueling. The heat and mass transfer mechanisms involved in LH₂ refueling are revealed, the variation in thermodynamic responses during the refueling process is described, the critical factors affecting the thermodynamic behaviors of LH₂ refueling are clarified, the industry standards on LH₂ refueling are critically assessed, and various refueling process management strategies are discussed. Finally, the future development directions of thermodynamic research on the LH₂ refueling process are discussed and prospected on the basis of the development trends and potential prominent challenges faced by LH₂ refueling technologies. Full article

Severe localized corrosion in crude unit overhead systems is a critical integrity concern, particularly under transient wetting conditions. This study combines high-frequency online ultrasonic (UT) monitoring with a simplified dew-point temperature margin (ΔT) to evaluate short-term changes in corrosion severity during operation. Wall-thickness data obtained at 12 h intervals were used to derive long-term thinning trends and a short-interval corrosion rate indicator (CR_12h). CR_12h increased as ΔT decreased, indicating that reduced dew-point margin was associated with increased corrosion severity. Although ΔT is not an exact thermodynamic dew-point prediction, it served as a practical operational proxy for transient wet-corrosion propensity. The evaluation supported partial replacement of the affected column-top region with Alloy C-276 cladding. Follow-up inspection after four years showed approximately 0.1 mm of pitting, corresponding to about 0.025 mm/y, which was approximately one order of magnitude lower than the previous Type 405 stainless-steel cladding. These results demonstrate a practical approach for linking continuous corrosion-monitoring data with operational indicators and material-selection decisions in crude unit overhead systems. The study further illustrates how monitoring-derived insights can be translated into repair planning and subsequently validated through long-term field performance following material upgrade. Full article

The sustainable development of the ceramics industry is severely impeded by its intensive energy consumption and the concomitant deficits in cooling and freshwater resources. To address these bottlenecks, this study proposes an integrated ejector refrigeration (ER)–humidification–dehumidification (HDH) hybrid system, harnessing ceramic waste heat as the driving energy source to improve overall energy efficiency. A thermodynamic model was developed to analyze the heat transfer characteristics of the ER-HDH system. Comprehensive investigation focuses on the influences of key operating parameters on refrigeration performance, desalination output and overall system efficiency. The results demonstrate that the proposed ER–HDH hybrid system facilitates the efficient thermodynamic cascading of waste heat from both flue gas and internal thermodynamic processes, achieving a high energy utilization factor (EUF) of 0.64 and an exergy efficiency η_Ex of 15.7%. The freshwater yield significantly outperforms that of a standalone HDH system, with the gain output ratio (GOR) more than tripling. The system performance is optimized under elevated generator and evaporator temperatures (T_g and T_e), coupled with a reduced condenser temperature T_c. Across their respective tested ranges, the EUF increases by averages of 19.1%, 45.1% and 38.9%. Furthermore, raising the feed seawater temperature T_{sw_in} significantly elevates the moist air humidity ratio, which in turn drives substantial enhancements in GOR and EUF, by over 83.2% and 58.1%, respectively. T_e and T_{sw_in} should be prioritized to enhance refrigeration and freshwater productions, respectively, while T_c serves as the key determinant for maximizing η_Ex. This study introduces an open dual-cascade ER-HDH system for mid/low-grade flue gas utilization and elucidates the distinct thermodynamic mechanisms governing subsystem interactions, and it addresses a critical knowledge gap in prevalent closed-loop solar-driven ER-HDH systems. Full article

Sodium-ion batteries are emerging as credible complements to lithium-ion technology for sustainable, safe, and cost-effective energy storage. This critical review links molecular-scale electrolyte solvation and interphase chemistry to electrode compatibility, full-cell engineering, manufacturing constraints, and commercial viability. Organic liquid, aqueous, ionic-liquid, concentrated, inorganic solid, polymer, and composite electrolytes are compared using transport, stability, processing, and interface criteria. The principal cathode and anode families are then evaluated in terms of practical voltage, reversible capacity, cycling stability, raw-material exposure, manufacturability, and end-of-life implications. A distinctive contribution of this work is the explicit separation of thermodynamic predictions, laboratory measurements, prototype demonstrations, and company-reported targets, together with design rules that connect electrolyte chemistry to cell-level performance. Sodium-ion batteries are unlikely to replace lithium-ion batteries universally, but they can occupy a strategic role where cost, safety, abundance, supply-chain resilience, and circularity outweigh maximum energy density. Full article

High-temperature chlorination roasting is a critical technique for achieving ultra-high-purity quartz required in semiconductor, photovoltaic, and fiber-optic applications. However, the removal mechanisms of lattice-bound impurities remain poorly understood due to a lack of integrated thermodynamic and kinetic analysis. This study systematically investigates the removal behavior of seven key lattice impurities, namely Ti, Al, B, Fe, Li, Na, and K, during chlorination roasting using combined thermodynamic modeling and diffusion kinetics. Thermodynamic calculations reveal that carbonaceous reductants are indispensable for enabling spontaneous chlorination of substitutional impurities such as Ti, Al, and B, while alkali metals including Na, K, and Li can be effectively removed under HCl atmosphere at moderate temperatures. Kinetic analysis identifies solid-state diffusion through the SiO₂ lattice as the likely rate-determining step based on the modeling framework, with activation energies ranging from approximately 90 kJ/mol for Na⁺ to 400 kJ/mol for Ti⁴⁺. A significant diffusion crossover effect is observed, where high-activation-energy impurities exhibit exponential mobility gains above 1200 °C. An alkali-first, Al-follows coupled diffusion mechanism is elucidated for aluminum removal. Based on these findings, a temperature-staged, atmosphere-segmented roasting strategy is proposed. This work provides a quantitative mechanistic framework for deep impurity removal and offers practical guidance for overcoming the 4N8 purity bottleneck in high-purity quartz production. Full article