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Abstract Soft on‐skin electrodes play an important role in wearable technologies, requiring attributes such as wearing comfort, high conductivity, and gas permeability. However, conventional fabrication methods often compromise simplicity, cost‐effectiveness, or mechanical resilience. In this study, a mechanically robust and gas‐permeable on‐skin electrode is presented that incorporates Flash Graphene (FG) integrated with a bioinspired armor design. FG, synthesized through Flash Joule Heating process, offers a small‐sized and turbostratic arrangement that is ideal for the assembly of a conductive network with nanopore structures. Screen‐printing is used to embed the FG assembly into the framework of polypropylene melt‐blown nonwoven fabrics (PPMF), forming a soft on‐skin electrode with low sheet resistance (125.2 ± 4.7 Ω/□) and high gas permeability (≈10.08 mg cm⁻2 h⁻¹). The “armor” framework ensures enduring mechanical stability through adhesion, washability, and 10,000 cycles of mechanical contact friction tests. Demonstrating capabilities in electrocardiogram (ECG) and electromyogram (EMG) monitoring, along with serving as a self‐powered triboelectric sensor, the FG/PPMF electrode holds promise for scalable, high‐performance flexible sensing applications, thereby enriching the landscape of integrated wearable technologies.

Abstract With the increasing number of available satellites from multi‐global navigation satellite systems (GNSS) and their applications in complicated environments, an increased number of faults in measurements are inevitable. Fault detection and exclusion (FDE) is an effective way to reject observation faults in order to guarantee the integrity of a GNSS positioning and navigation system. We propose a modified between‐receiver single‐differencing (SD)‐based FDE algorithm for real‐time kinematic (RTK) positioning. First, a modified between‐receiver SD model‐based FDE is proposed for testing the estimated float ambiguities. This is helpful in rejecting observations with unreliable float ambiguities and obtaining reliable double‐differencing (DD) integer ambiguities, denoted as the SD float model in the sequel. Second, DD ambiguities are resolved by the DD model and used to update the previous SD float ambiguity. After that, a modified SD fix model, taking the DD ambiguities as the known parameters, is further developed to detect any unreliable or fault‐resolved ambiguities. To verify the modified SD model‐based FDE algorithm, a kinematic vehicle test is conducted. The fault detection test statistics of the SD float model and the SD fix model, time‐to‐first‐fix, ambiguity‐fix rate, SD residuals, and positioning performances are examined. The results show that the modified FDE method can detect and exclude fault satellites accurately and effectively, which is verified by the SD residuals of fault satellites. The ambiguity‐fix rate of the proposed modified FDE algorithm is improved by approximately 3% with 70 more epochs of fixes. Regarding the 3D positioning performance, the modified proposed SD‐based FDE algorithm can achieve 54.11%, 57.78%, and 73.11% improvements for standard deviation, root mean square, and mean bias, respectively, when compared with the processing strategy without the use of the proposed FDE.

Abstract Sodium‐ion batteries have been regarded as ideal alternatives to lithium‐ion batteries in large‐scale electrochemical energy storage systems because of their low cost and abundant resources. However, the lack of high‐performance electrode materials with high energy density hinders the development of sodium‐ion batteries. Prussian blue analogs (PBAs) are especially regarded as superior cathodes for sodium‐ion batteries due to their high capacity and good electrochemical stability. The species and chemical environment of transition metal ions in PBAs greatly affect the electrochemical properties. In this study, we report a sodium cobalt hexacyanoferrate (NaxCo[Fe(CN)6]) and potassium iron hexacyanocobaltate (KxFe[Co(CN)6]) nanoparticles through the coprecipitation method via changing the coordination structures of Co and Fe. With similar morphologies of well‐defined nanocubes and different M1–CN–Mʹ2, the initial discharge capacities of NaxCo[Fe(CN)6] cathode and KxFe[Co(CN)6] anode reach 104.1 and 354.8 mAh g−1, respectively. The sodium‐ion full cell assembled using NaxCo[Fe(CN)6] cathode and KxFe[Co(CN)6] anode achieves a discharge capacity of 141.6 mAh g−1. The outstanding performances of the NaxCo[Fe(CN)6] and KxFe[Co(CN)6] are attributed to their stable structures, and the facile synthesis of NaxCo[Fe(CN)6] and KxFe[Co(CN)6] makes them accessible for large‐scale applications.

CD279 is a cell surface protein predominantly expressed on T cells. Its ligands CD273 and CD274 are expressed on antigen‐presenting cells and tumors. CD279 has been shown to act as an important immune check point by inhibiting CD8 T cell activation, and antibodies against CD279 enhance T cell‐mediated cytotoxic function. However, whether CD279 has other functions in CD4 T cell homeostasis or in mediating T cell interactions with antigen‐presenting cells remains unclear. In the present study, we show that antibody‐mediated inhibition of CD279 reduces T cell survival in bone marrow in vivo. Unexpectedly, CD279 blockade also compromised regulatory T cell and macrophage interactions by reducing their contact time. The observation that the CD273 antagonist had little effect suggests that CD274 (the second ligand of CD279) plays a more central role in contact between conventional T cells (Tcon) and macrophages. The results of the present study suggest that both CD279 ligands contribute to the interaction length between T cells and macrophages as a mechanism of maintaining Treg homeostasis. Furthermore, CD273 and CD274 are not redundant ligands because CD274 may have unique effects on Tcon in this complex immune axis. Therefore, ligand selection for check point blockade as a tool for cancer immunotherapy has important implications with respect to anti‐tumor T cell activation and the avoidance of side effects.