Beijing University of Technology

Fragment-Specific Stable Carbon Isotope Analysis for Screening the Authenticity of Red Yeast Rice Products

Monacolin K (MK) in red yeast rice (RYR) is structurally identical to pharmaceutical lovastatin in its lactone form, making their origins difficult to distinguish. This study examined the δ13C value of hydrolysis-derived 2-methylbutyric acid (2-MBA) as a fragment-specific screeni...

The Relationships Between Social Contact Patterns, Intercultural Sensitivity and Adaptation of Chinese International Students in the UK

This research examines the relationships between social contact patterns, intercultural sensitivity and three adaptation domains, specifically socio-cultural, psychological and academic adaptation, of Chinese international students in UK higher education. The study employed a mix...

High-temperature mechanical properties of basalt fiber-reinforced concrete after salt spray erosion

To investigate the durability performance of basalt fiber-reinforced concrete (BFRC) subjected to the coupled effects of salt spray erosion and fire-induced high temperatures, this study systematically conducted combined exposure tests with salt spray durations (0, 30, 90, and 18...

Data-driven safe adaptive dynamic programming with hybrid lifelong learning in wastewater treatment processes

The wastewater treatment process (WWTP) is a critical component driving sustainable industrial development. The monitoring and control of the dissolved oxygen (DO) concentration play a vital role in the WWTP. An adaptive utility function, a control barrier function, and an adapti...

Key Technologies for Scour Protection of Inland River Bridge Foundations Using Solidified Soil

Abstract This work investigates the key scour protection techniques for bridge foundations of an inland river bridge—Chongqing Jiangjin Highway Yangtze River Bridge in China. It incorporates a water retaining wall, gabion cofferdam, geotextile, and solidified soil. The gabion cof...

A TMM-based approach for planar eigenvalued problem of the multi-cross-tie cable-tower-beam system

With the increasing span of cable-stayed bridges, the cables are becoming considerably longer, exacerbating their vibration-related challenges. The introduction of cross-ties for vibration control has been extensively applied in bridge construction, and the dynamic characteristic...

Effects of weakly bonded ultra-high-strength steel bars details on the seismic performance and resilience of shear walls

The use of ultra-high-strength steel bars (UHSB) has attracted increasing attention because it can improve the resilience and sustainability of structural components. However, UHSB may increase the risk of shear failure in structural walls. This study proposes a concealed bracing...

An orientation-sensitive dynamic model for urban tunnel access-zone luminance: Integrating solar position and landscape geometry using 3D-printed model

The tunnel entrance represents a critical visual-environment interface, where tunnel access-zone luminance L 20 S directly impacts driver safety and overall tunnel lighting energy consumption. However, the L 20 S index is typically estimated using static values or simplified assu...

A novel energy evolution-based method for brittleness evaluation of shale considering the deformation and failure process

Accurate evaluation of shale brittleness is critical for optimizing hydraulic fracturing design and predicting well productivity in shale gas development. Current brittleness indices often fail to comprehensively characterize rock brittleness throughout the deformation and failur...

Uncovering the hidden resource cost of urbanization: A globally scalable open-source framework for urban housing vacancy monitoring

Rapid urbanization often outpaces population growth, creating massive resource inefficiencies. Quantifying this structural mismatch between housing supply and actual occupancy remains a global challenge due to costly censuses and imprecise proxy data. Here, we present a globally...

The resilience and damage of concrete

The damage and resilience of concrete are characterized and discussed from the perspective of elastic strain energy. This study reveals an intrinsic connection between damage and resilience, thereby uncovering the physical underpinning of resilience and damage at the material lev...

Ultrarobust, Rapidly Recoverable Superhydrophobic Coatings with Self-Similar Micro/Nanostructures and Reinforced Interface for Aluminum Alloy Protection

Abstract In the field of aluminum alloy protection, constructing durable superhydrophobic coatings through a simple strategy is always a great challenge. Here, we report a functional coating with high mechanical robustness and superhydrophobic recoverability, composed of 1H, 1H,...

Promoting Effects of CuSO4 Modification on N2 Selectivity of 1Ru/5Ce-TiO2 Catalyst for Selective Catalytic Oxidation of NH3

Abstract xCu+1Ru/5Ce-TiO2 catalysts were prepared by a grinding method to improve the NH3–SCO performance of 1Ru/5Ce-TiO2. The results revealed a marked promotion of N2 selectivity over 1Ru/5Ce-TiO2 upon CuSO4 incorporation. In particular, the 5Cu+1Ru/5Ce-TiO2 catalyst exhibited...

Environmental and Preliminary Economic Assessment of Integrated Resource Recovery from Spent Fluid Catalytic Cracking Catalysts

Abstract This study evaluates an integrated resource-recovery route for spent fluid catalytic cracking (FCC) catalysts, consisting of alkaline roasting, water leaching, adsorption/desorption, precipitation recovery, and leaching-residue valorization. Using the treatment of 1 t of...

Confined Mg2+-Directed Interfacial Evolution of Primary Structural Units of Mg-MOF-74 on Platelet Clinoptilolite for CO2/CH4, CH4/N2, and CO2/N2 Separations

Controlling MOF nucleation on zeolite surfaces remains challenging when metal ions are freely supplied in solution, often resulting in poorly regulated interfaces. Herein, Mg2+-exchanged platelet clinoptilolite (Mg-PCP) was used as a confined metal source to direct the in situ gr...

Parametric numerical study on flow and heat transfer characteristics of a steam-molten salt spiral-wound heat exchanger

In a deep peak-shaving system of coal-fired units coupled with main steam extraction and molten salt thermal storage, the flow and heat transfer behavior of steam and molten salt within the core heat exchange equipment directly affects the system performance. In this study, a ste...

Antibody-Mimicking Nanocluster Ameliorates Osteoporosis in Preclinical Model

Abstract Osteoporosis occurs due to the synergistic effect of increased bone resorption and decreased bone formation. However, a therapeutic approach that can simultaneously inhibit osteoclastic resorption and promote osteogenic activity directly is still lacking. Growing evidenc...

Influence of Environmental Factors and Microstructure on Water Vapor Permeability of Gypsum-Based Inorganic Mineral Materials

The water vapor permeability coefficient is a key parameter describing moisture transport in building materials, exerting a crucial influence on their hygrothermal performance and indoor humidity regulation. However, uncertainties remain in existing experimental methods and param...

Laser-driven high-speed processing of perovskite solar cells: Emerging technologies and challenges

Laser processing, as a non-contact, precise, and scalable technique, is playing an increasingly key role in advancing the fabrication of perovskite solar cells (PSCs). This review provides a critical, systematic overview of emerging laser technologies for PSCs, moving beyond simp...

Competitive flow identification and hemodynamic analysis in coronary artery bypass grafting

Low graft flow after coronary artery bypass grafting (CABG) may result from anastomotic stenosis or competitive flow, but differentiating these potential causes using intraoperative flow measurements remains challenging. This study aimed to explore graft-type-specific factors ass...