Institution
University of South China
Recent research
- Open access
A Fano-plane counterexample to a conjecture on intersecting multipartite hypergraphs
We construct a seven-partite seven-uniform hypergraph with 28 vertices and 22 edges in which every two edges meet in at least two vertices and the ordinary vertex cover number is four. The construction is based on the seven lines of the Fano plane and has a cyclic description by...
- Engineering & TechnologyOpen access
The exact pair-cover number of two-intersecting five-uniform families
We prove that every finite family of five-element sets whose distinct members intersect in at least two elements can be covered by at most six two-element sets, each required to be wholly contained in the member it covers. The known eleven-block cyclic example makes the bound sha...
- AI & ComputingOpen access
A ten-pair covering theorem for two-intersecting six-uniform families
A pair cover of a family of sets is a collection of two-element sets such that each member of the family contains a whole selected pair. We prove that every two-intersecting family of six-element sets, on an arbitrary ground set, has a cover by at most ten pairs. The general uppe...
- Engineering & TechnologyOpen access
The exact pair-cover number of two-intersecting five-uniform families
We prove that every finite family of five-element sets whose distinct members intersect in at least two elements can be covered by at most six two-element sets, each required to be wholly contained in the member it covers. The known eleven-block cyclic example makes the bound sha...
- Engineering & TechnologyOpen access
Rapid excavation in deep rock masses imposes a non-proportional stress path that can destabilize jointed rock. A three-dimensional Particle Flow Code (PFC3D) true-triaxial model of granite containing two parallel non-persistent joints was used to examine the effects of joint leng...
- Health & MedicineOpen access
ESAT-6 and CFP-10 in tuberculosis: bridging virulence to diagnostic applications
Tuberculosis (TB) remains a major global public health challenge. Accurate detection of Mycobacterium tuberculosis ( Mtb ) infection, particularly latent tuberculosis infection (LTBI), is essential for targeted preventive treatment and progress toward TB elimination. The traditio...
- BiologyOpen access
Alzheimer’s disease is an inflammatory neurodegenerative disease for which no effective clinical treatment currently exists. We have previously reported that mesenchymal stem cell–derived extracellular vesicles delay retinal degeneration by exerting anti-inflammatory effects thou...
- AI & ComputingOpen access
Forest certificates and Hamilton cycles in Barnette graphs with at most six uncovered vertices
For finite simple 3-connected cubic bipartite plane graphs, pairwise vertex-disjoint facial 4-cycles leaving at most six original vertices uncovered force a partition of the faces of length at least six into two induced forests satisfying Florek's colour constraints. Every intern...
- BiologyOpen access
Stroke is among the leading causes of death and disability. Trouble falling asleep is a common sleep-related problem. Epidemiological studies show a correlation, but the genetic mechanisms remain unclear. We combined large-scale GWAS summary statistics with clinical cohort data f...
- Society & Economics
Purpose Drawing on the Conservation of Resources theory, this study investigates how commitment-focused human resource (HR) attributions interact with leader-member exchange (LMX) in predicting work engagement via job crafting. Design/methodology/approach Three complementary stud...
- Engineering & TechnologyOpen access
Coarse aggregate contacts and orientations govern load-transfer paths in porous asphalt (PA) mixtures, yet their respective relationships with dynamic modulus (| E *|) remain unclear. Industrial X-ray computed tomography (X-CT) and digital image processing were used to reconstruc...
- Engineering & TechnologyOpen access
ABSTRACT Wide‐bandgap (WBG) perovskites with a ∼1.78 eV bandgap are essential for monolithic all‐perovskite tandem cells, yet their efficiency and stability are limited by complex precursor chemistry, uncontrolled crystallization, defect formation, and photoinduced halide segrega...
- Health & MedicineOpen access
ABSTRACT Resistance to second‐generation antiandrogens poses a major therapeutic challenge in castration‐resistant prostate cancer (CRPC). While ferroptosis evasion has been implicated in treatment failure, the key molecular determinants driving this evasive process are poorly un...
- Engineering & TechnologyOpen access
Background Cisplatin-based chemotherapy is limited by toxicity and resistance.High-intensity focused ultrasound (HIFU) is a noninvasive ablation technique with potential to enhance chemotherapy efficacy.Objective To investigate the anti-tumor effects and mechanisms of cisplatin c...
- Materials & Energy
Abstract The photoredox-catalyzed selective addition of N–H bonds across unactivated 1,3-enynes represents a promising and sustainable transformation, enabling efficient access to high-value-added propargylamines. Current state-of-the-art advancements via photoredox catalysis rel...
- Engineering & Technology
Cross-Rotor Coassembly of AIEgens for Dual-NIR-II Laser-Enhanced Imaging-Guided Phototheranostics
Abstract Phototherapy, including photodynamic therapy (PDT) and photothermal therapy (PTT), offers a minimally invasive approach with precise spatiotemporal control for cancer treatment. However, conventional photosensitizers are prone to aggregation-caused quenching, which lower...
- Engineering & TechnologyOpen access
IN738LC is a γ′-strengthened superalloy for hot-section components up to 900 °C, but its high Al + Ti content makes it susceptible to cracking during laser-directed energy deposition (LDED). Adding IN718 suppresses cracking but degrades the intrinsic γ′ fraction and the calculate...
- Materials & EnergyOpen access
The development of sustainable synthetic routes from aldehydes to functionalized heteroarenes is an important goal in organic synthesis, owing to the low cost and ready accessibility of aldehydes. However, the high bond dissociation energy (BDE) of the Ar-C(O) bond makes the phot...
- Health & MedicineOpen access
The global incidence of pneumoconiosis is rising, significantly impacting individuals' quality of life. While traditional symptomatic treatments have shown some therapeutic effects, understanding underlying risk factors and biomarkers is crucial for better management. This meta-a...
- Engineering & TechnologyOpen access
Effects of water intrusion on fracture characteristics of hard coal
Abstract Aquifer water can cause serious geological hazards by catastrophically rushing into underground space. The water seepage can increase the moisture content and pore pressure of coal/rock, which can change mechanical behaviour of coal/rock subject to tectonic and abutment...