The effective protection and utilization of historical and cultural heritage in urban and rural areas are increasingly gaining public attention. Constructing a continuous and complete heritage spatial network is an important means for achieving holistic protection and utilization of heritage, and it is also a crucial approach to enhancing the overall connectivity of regional culture. How to construct a cultural heritage corridor is of great significance to the comprehensive protection of cultural heritage in historic urban areas. This study takes the cultural heritage of Tianjin’s historical urban areas as an example, uses the Minimum Cumulative Resistance (MCR) and Gravity Model (GM) to construct a cultural heritage corridor, and evaluates its suitability. This research enriches the theory of heritage conservation, aims to enhance the connectivity and integrity of cultural heritage, and provides a new perspective for the integrated development of regional culture and tourism in the process of activation and utilization.

A kind of core–shell hybrid composite (P@BMMs) as a drug carrier was prepared through seed polymerization method, in which, biomodal mesoporous materials (BMMs) as core and copolymer poly(N-isopropylacryl-acrylamide)-co-poly(acrylicacid) [P(NIPAM-co-AA)] with pH- and temperature-responsive characteristics as shell. Its structural features and textural parameters were characterized using various techniques. The kinetic and thermodynamic evaluation demonstrated the existence of hydrogen bond interaction between IBU and P(NIPAM-co-AA)-coated surfaces. Meanwhile, the smart thermo/pH-responsive properties of ibuprofen (IBU) release could be regulated through adjusting coated amount of copolymer. Specially, the responsive properties of P@BMMs were traced by small-angle X-ray scattering technique, suggesting the surface roughness and structural irregularities. GRAPHICAL ABSTRACT

Few-layer graphene oxide depositing on broadband reflective mirror as a novel saturable absorber for mode-locking of a thulium-doped fiber laser at 2007 nm, which generated 0.56 nJ single pulse energy at 3.17 MHz repetition rate.

While the urban rail transit systems have been developed rapidly, the nearby heritage buildings and historic sites are facing possible threats of unexpected damages. In particular, a rail project has a potential impact on numerous heritage buildings and sites in an old city. Thus, to better protect these heritage buildings and sites, it is crucial for decision-makers to be able to rapidly and accurately evaluate these threats. Based on Set Pair Analysis (SPA) theory, this study developed a risk assessment model to assess the safety of heritage buildings adjacent to metro construction. In this model, the risk levels of adjacent heritage buildings are ranked. Moreover, this study establishes an assessment index system comprising 16 individual indexes among four categories related to heritage building, metro, soil, and management. The index system determines the interval values for each evaluation factor. To improve the reliability of the index weight, a linear weighting method was adopted. In this study, both subjective weights calculated via the Analytic Hierarchy Process (AHP) and objective weights calculated by the Clustering Weight Method (CWM) are analyzed comprehensively. Moreover, a case study was conducted by applying the proposed assessment model into assessing the structural safety risk of a heritage building adjacent to the Zhengzhou Metro Line Three. It was found the results of the proposed model were consistent with the Matter-Element (ME) method. The proposed model can be used to provide decision-making support for controlling risk on similar projects.

Under the macro background of the rural revitalization strategy and urban-rural integrated development, rural settlements are undergoing a profound transformation from physical morphology to functional connotation. However, existing studies mainly focus on the expansion of single land elements, lacking long-term quantitative monitoring of the coupling relationship between rural development and policy texts. Taking Fuzhou City as a case study, this research selects long-term Global Human Settlement Layer (GHSL) and Night-Time Light (NTL) data from 1990 to 2025, combined with policy text quantification methods. Based on rural development units, the Coupling Coordination Degree Model (CCDM), Macro-Micro Matching Index (MMI), and gravity center migration analysis are employed to systematically reveal the spatiotemporal evolution characteristics and driving mechanisms of rural settlement morphology under policy institutional changes. The research results indicate that: (1) Fuzhou’s rural settlements exhibit relatively stable gravity centers of construction land, while the gravity center of economic vitality has significantly shifted toward the southeastern coastal area under policy guidance; (2) The coupling coordination degree of rural human–land relationships has generally increased, but with significant spatial heterogeneity, forming a pattern of high-quality coordination in coastal areas and low-efficiency lag in mountainous regions; (3) The shift in policy orientation from scale expansion to functional enhancement has driven economic factors to concentrate in key policy areas ahead of physical spatial expansion. The analytical framework combining remote sensing monitoring and policy quantification constructed in this study reveals the precedence of factor flow and the lag of physical space driven by policies, providing a scientific basis for the differentiated governance of rural areas in coastal mountainous cities.