Tianjin University

Parametric Design of a Helical Electromagnetic Bandgap Reflector for an Equiangular Spiral Antenna at 2.5 GHz

This study presents a planar helical electromagnetic bandgap (EBG) structure designed for integration with an equiangular spiral antenna operating at 2.5 GHz. An equivalent-circuit model is introduced, and the effects of the unit-cell width, substrate thickness, metallic-strip wi...

Harnessing CYP71 Enzymes for Terpenoid Indole Alkaloid Production: A Synthetic Biology Perspective from Discovery to Application

Abstract Terpenoid indole alkaloids (TIAs) are a class of structurally diverse natural products with important pharmacological activities. Recently, substantial progress has been made in elucidating TIA biosynthetic pathways, and these studies have revealed the central roles of C...

Bidirectional Multi-Scale Cross-Modal Attention Network for SAR–Multispectral Semantic Segmentation

Fusing synthetic aperture radar (SAR) and multispectral (MS) imagery for semantic segmentation remains challenging because of cross-modal semantic discrepancies, cloud-induced contamination, incomplete integration of complementary details, and the loss of spatial information duri...

Strain Coupled (110)-Oriented Lithium Anodes for High-Rate and High-Capacity Epitaxial Growth

Abstract Lithium metal is considered as the ultimate anode for high-energy-density batteries, yet its practical realization is thwarted by dendrite proliferation and chemomechanical interfacial instability. While epitaxial growth on crystallographically textured substrates provid...

Multitarget Dynamic Action Recognition Model for Construction Workers Based on Continuous Action Features

Abstract To address the current problems of frequent injury accidents among construction workers, imperfect supervision systems, and low adaptability of existing algorithms, a dynamic action recognition model for construction workers based on continuous action features and a diff...

Bending behavior of an inter-module slider self-locking connection for steel modular buildings

This study investigates a novel slider self-locking connection proposed by the authors' research group. A Four-point bending tests were conducted on the slider self-locking inter-module connections to characterize their failure modes and flexural bearing capacities. The failure m...

La-driven structural and electronic regulation of NaTaO₃ perovskite for enhanced photothermal CO₂ hydrogenation

The rational regulation of perovskite structures provides an effective strategy for developing efficient catalysts for CO₂ conversion. Herein, a series of La-doped NaTaO₃ perovskites were synthesized via a hydrothermal method and systematically investigated the changes in phototh...

Synthesis, Preclinical Evaluation, and Clinical Application of the FAPI‐Dimer Based on the LARM Platform

ABSTRACT Fibroblast activation protein (FAP) is a promising pan‐tumor target for theranostics, but current FAP‐targeted radioligands are limited by insufficient tumor retention and suboptimal therapeutic doses. To address these challenges, we developed a novel LARM platform and s...

Wave propagation and wrinkling localization in a prestressed periodic elastic half-space

We investigate surface waves in a prestressed elastic half-space whose material properties are constant in the vertical direction but vary periodically along the direction of wave propagation. Using Floquet-Bloch theory, Fourier expansion, and the Stroh formalism, we reduce the d...

Lean-burn stability and thermal efficiency of a high-compression SI engine using late direct water injection and multi-coil ignition

Lean operation in high-compression spark-ignition engines is constrained by the competing requirements of knock suppression and combustion stability. Direct water injection (DWI) provides an effective means of increasing knock tolerance, but its influence on combustion depends st...

A Survey of Deep Learning Based Software Refactoring

Refactoring is a critical activity in software engineering used to improve software quality and maintainability. Increasingly, deep learning (DL) techniques are being applied to software refactoring to overcome the limitations of traditional, manually designed heuristics. However...

The particle size effect on the uplift capacity of shallow circular plate anchors in sand using DEM

To address the inherent particle size effect (PSE) in physical and DEM modeling, 3D DEM models of shallow circular plate anchors in sand were developed using PFC3D. Following validation against centrifuge data, the influence of the effective plate diameter-to-mean particle size r...

Resilience Evaluation of Urban Tunnel Operations Based on Multi-Source Data and Explainable Artificial Intelligence

As critical nodes in urban transportation networks, the operational resilience of urban tunnels directly affects roadway network efficiency and public safety. Existing studies on tunnel resilience exhibit deficiencies in the attention paid to routine incidents, the interpretabili...

An electro-thermo-chemo-mechanical coupled computational framework for contact–dissolution corrosion using a phase-field formulation

Metallic contact interfaces in electrical connectors, microelectromechanical systems, and related components are commonly subjected to sustained mechanical loading, electrical conduction, thermal effects, and corrosive environments. The strong coupling between contact constraints...

From Custom Logic to APIs: Understanding and Recommending API Replacement Refactorings

Software refactoring is essential for maintaining code quality. However, API replacement refactoring, which replaces custom logic with API calls, remains underexplored. Existing refactoring tools provide limited support for detecting such opportunities because they rely on predef...

Synergistic 1-Ethyl-3-methylimidazolium Trifluoromethanesulfonate and Sodium Percarbonate Pretreatment for Enhanced Medium-Chain Fatty Acid Recovery from Waste-Activated Sludge: Mechanisms and Microbial Insights

Abstract Medium-chain fatty acids (MCFAs) offer a sustainable route for valorizing waste-activated sludge (WAS) into higher-value products, yet their bioproduction is constrained by the rigid extracellular polymeric substance (EPS) barrier and inefficient chain elongation (CE). H...

Nanoscale Mechanisms of Corrosion Threshold: Effects of Passivation Film Crystal Structures

Abstract The corrosion resistance of passive films on reinforcing steel is fundamentally governed by the depassivation stability of iron oxide polymorphs under chloride-containing environments. In this study, the electrochemical behavior and atomistic depassivation mechanisms of...

Three‑dimensional graphical golden ratio optimization of a variable working fluid concentration auto‑cascade refrigeration cycle

The auto-cascade refrigeration cycle has broad application prospects in low-temperature freezers, biomedical equipment, environmental test equipment, and small-scale liquefaction devices. Compared with conventional multi-stage cascade cycles, improved low-temperature refrigeratio...

Enhanced Hydrogen Production via Surface Oxygen Vacancy Regulation in Element-Doped Ni/CeO2 Catalysts

Abstract Steam reforming of methane (SRM) for H2 production is a critically important industrial H2 production pathway that has attracted extensive research. However, catalyst deactivation and instability at high reaction temperatures and low water-to-methane ratios remain pressi...

Over 20% Efficiency in As–Cast Organic Solar Cells Enabled by Flory–Huggins Parameter Engineering

ABSTRACT The realization of high–efficiency as–cast organic solar cells (OSCs) represents a key step toward simplified processing and scalable fabrication for commercialization. However, achieving high–performance as–cast devices remains challenging because it demands delicate ba...