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The Songhua River Basin is an important grain production base and ecological region in China, and studying its water supply and water quantity changes is of great significance for achieving scientific water allocation and ecological environment protection in the basin. This study employed the CSR RL06 Mascon data products derived from the GRACE and GRACE-FO gravity satellites from 2003 to 2020. For the missing data between GRACE and GRACE-FO, published reconstructed data were used to fill the gaps. The accuracy of the data in the study area was validated through comparison with GLDAS simulated water storage data. Based on this, the spatial and temporal variation characteristics of terrestrial water storage in the basin were analyzed using a combination of Theil-Sen and Mann-Kendall trend tests. Additionally, the Pearson correlation coefficient and geographical detector methods were utilized to delve into the influence of various factors, including precipitation (Pre), evapotranspiration (ET), population density (POP), normalized difference vegetation index (NDVI), ecological zones (Ez), and digital elevation model (DEM), on terrestrial water storage. Furthermore, aiming to address the issue of errors introduced by resampling when performing correlation analysis on remote sensing data of different resolutions, the traditional raster data resampling method was optimized. The research findings indicate the following: 1 The GRACE data products exhibit good accuracy in the study area, and the linear trend range of their changes exhibits a high correlation with GLDAS data. 2 The optimized resampling method is more suitable for spatial studies similar to Pearson correlation analysis, and it significantly improves the accuracy of most data compared to directly using raw data. 3 The water storage in the Songhua River Basin has shown an increasing trend during the study period, with a noticeable increase in the extreme value ratio. By the end of the study period, the spatial distribution of water storage in the region tended to stabilize, exhibiting a basic pattern of more water in the northeast and less in the southwest. 4 The primary individual factors causing changes in water storage in the basin are precipitation and evapotranspiration, and the combined effects of most factors manifest as nonlinear enhancement. [ABSTRACT FROM AUTHOR]

Topological quasiparticles have garnered significant research attention in condensed matter physics. However, they are exceedingly rare in two-dimensional systems, particularly those hosting unconventional topological quasiparticles. In this work, employing first-principles calculations and symmetry analysis, we demonstrate that PtS, PtSe, and PtTe monolayers serve as high-quality two-dimensional topological semimetal materials. These materials exhibit multiple types of topological quasiparticles around the Fermi level in the absence of spin–orbit coupling, such as conventional linear Weyl points and unconventional quadratic Weyl points in the PtS monolayer, as well as nodal loops in PtSe and PtTe monolayers. When spin–orbit coupling (SOC) is introduced, a tiny gap opens, transforming the systems into quantum spin hall insulators. Simultaneously, three spin–orbit Dirac points, robust against SOC, appear at the X, Y, and M points. We illustrate the symmetry protection, low-energy effective model, and edge states of these topological states. Our work provides an excellent material platform for studying novel two-dimensional topological quasiparticles and topological insulators. [ABSTRACT FROM AUTHOR]

Flexible, breathable and lightweight electronic textiles hold great promise to change the ways we intact with electronics. Electrical connections among functional components are indispensable for system integrations of electronic textiles. However, it remains challenging to achieve mechanically and electrically robust connections to fully integrate with interwoven architecture and weaving process of textiles. Here, we reported a seamlessly-integrated textile electric circuit by weaving conductive fibers with self-connecting capacity at the interwoven points. Self-connecting conductive fibers (SCFs) were prepared by coating modified polyurethane conductive composites onto nylon fibers. Electrical connections were achieved at interwoven points in less than 5 s once the weft and warp SCFs were woven together, due to the designed dynamic bonds of aromatic disulfide metathesis and hydrogen bonds in the modified polyurethane (MPU). The self-connecting point was electrically stable (varied by less than 6.7% in electrical resistance) to withstand repeated deformations of bending, pressing and even folding. Such a self-connecting strategy could be generalized to weave full-textile electronics capable of receiving signals and displaying with enhanced interfacial stability, offering a new way to unify fabrication of electronics and weaving of textiles. [ABSTRACT FROM AUTHOR]