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Silicon (Si) is a promising anode material for lithium‐ion batteries (LIBs) owing to its tremendously high theoretical storage capacity (4200 mAh g−1), which has the potential to elevate the energy of LIBs. However, Si anodes exhibit severe volume change during lithiation/delithiation processes, resulting in anode pulverization and delamination with detrimental growth of solid electrolyte interface layers. As a result, the cycling stability of Si anodes is insufficient for commercialization in LIBs. Polymeric binders can play critical roles in Si anodes by affecting their cycling stability, although they occupy a small portion of the electrodes. This review introduces crucial factors influencing polymeric binders' properties and the electrochemical performance of Si anodes. In particular, we emphasize the structure–property relationships of binders in the context of molecular design strategy, functional groups, types of interactions, and functionalities of binders. Furthermore, binders with additional functionalities, such as electrical conductivity and self‐healability, are extensively discussed, with an emphasis on the binder design principle. [ABSTRACT FROM AUTHOR]

It is critical to estimate the location using only Long‐Term Evolution (LTE) and Wi‐Fi information gathered by the user's smartphone and deployable for emergency rescue, regardless of whether the Global Positioning System is received. In this research, we used a vehicle to gather LTE and Wi‐Fi wireless signals over a large area for an extended period of time. After that, we used the learning technique to create a positioning database that included both collection and noncollection points. We presented a two‐step positioning algorithm that utilizes coarse localization to discover a rough location in a wide area rapidly and fine localization to estimate a particular location based on the coarse position. We confirmed our technology utilizing different sorts of devices in four regional types that are generally encountered: dense urban, urban, suburban, and rural. Results presented that our algorithm can satisfactorily achieve the target accuracy necessary in emergency rescue circumstances. [ABSTRACT FROM AUTHOR]

Keywords: heterocycles; alkynes; cyclization; gold catalysis; norbornene EN heterocycles alkynes cyclization gold catalysis norbornene 3652 3661 10 10/19/23 20231102 NES 231102 Graph Direct C-H functionalization of heteroarenes has advanced significantly in recent decades, allowing access to a wide range of heteroarenes for the development of new pharmaceuticals and functional materials. Purification by flash column chromatography (silica gel, hexanes/EtOAc 200:1) provided B 1c b ; yield: 226 mg (63%); yellow solid; mp 110-112 °C. Purification by flash column chromatography (silica gel, hexanes/EtOAc 200:1) provided B 1e b ; yield: 451 mg (70%); orange liquid. Purification by flash column chromatography (silica gel, hexanes/EtOAc 100:1) provided B 1o b ; yield: 241 mg (95%); yellow liquid. [Extracted from the article]