Tianjin University

An Optimized CatBoost Model for Spatiotemporal Prediction of hmF2 in High-Latitude Regions

The peak height of the F2 layer (hmF2) is a key parameter describing the vertical structure of the ionosphere. It is important for high-frequency radio communication planning and space-weather background assessment, particularly at high latitudes. To improve long-term hmF2 predic...

Fast identification of iron-ore solid waste based on LIBS and multi-feature fusion machine learning with model interpretability analysis

Rapid screening of iron-ore solid waste (ISWs) at ports is crucial for ecological security and customs supervision, while conventional methods are time-consuming and labour-intensive, and laser-induced breakdown spectroscopy (LIBS)-based ore screening lacks practical application....

Constructing High-Transparency, Self-Healing and Reprocessable Poly(thiourethane) Elastomers Based on Zn2+-Multidentate Pyrimidine Coordination

To develop self-healing polyurethane materials with high transparency and superior mechanical performance, in this work, the poly(thiourethane) elastomers were prepared by incorporating the dynamic thiourethane bonds via thiol–isocyanate click reaction, followed by the addition o...

Scenario-Based Multi-Objective Optimization of HVAC Supply Parameters for Respiratory Particle Control in a Subway Carriage

Respiratory infectious diseases pose substantial transmission risks in enclosed public-transport environments. Under a defined fully seated reference scenario, this study examines whether the same HVAC supply parameter governs two respiratory-particle control objectives in a subw...

Capital market liberalization and stock price crash risk: a Shanghai-Hong Kong stock connect expansion perspective

Abstract Capital market liberalization provides foreign investors with greater access to direct investment in mainland China’s stock market. This study uses the expansion of the Shanghai–Hong Kong Stock Connect as a quasi-natural experiment. The sample consists of A-share listed...

Serum and salivary uric acid levels in oral submucous fibrosis: a systematic review and meta-analysis

This study aimed to evaluate differences in serum uric acid (SeUA) and salivary uric acid (SaUA) levels between patients with oral submucous fibrosis (OSF) and healthy controls. PubMed, Embase, Web of Science, Google Scholar, and the Cochrane Library were searched for studies rep...

Promotion strategy of electric vehicle in the post-subsidy era: empirical evidence from China

Abstract Financial incentive policies have played a crucial role in cultivating the electric vehicle market during its initial development stage. However, as subsidies decline, how governments can effectively adjust policy strategies to sustain market growth has become a critical...

Biosynthesis and heterologous production of the α-agarofuran scaffold of Celangulin V from Celastrus angulatus

Celangulin V is a widely used biopesticide derived from Celastrus angulatus, and features antifeedant and insecticidal properties as a dihydro-β-agarofuran (DHβAF) sesquiterpenoid. Its biosynthesis remains largely unexplored. Here, we assemble a chromosome-level and haplotype-res...

A cilia-associated epithelial alteration axis nominates ERICH3 as an entry point to PI3K engagement in lung adenocarcinoma

LUAD adopts heterogeneous oncogenic signalling states, and bias toward a PI3K–AKT–mTOR–engaged state is not fully explained by canonical pathway lesions. Because membrane-proximal spatial organization can tune receptor-proximal signalling yet is difficult to quantify in human tum...

Deep learning-based analysis of paraspinal muscle changes in lumbar disc herniation

Lumbar disc herniation (LDH) is a predominant cause of low back pain, significantly affecting the quality of life of patients and closely linked to the condition of paraspinal muscles (PSM). However, existing two-dimensional (2D) measurement techniques that rely on muscle cross-s...