Shaoguan University

Reappraising energy conversion in internal combustion engines: the ideal cycle and corresponding efficiency definition from a chemical-energy perspective

Conventional ideal internal combustion engine cycles are grounded in the air-standard assumption, which obscures the compositional evolution of the working fluid and mischaracterizes the true nature of energy input as external heat addition rather than in-cylinder chemical conver...

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...

A residual-based approach to assessing conditional over- and under-representation of multiword expressions across phrase types

The present study introduces a residual-based approach for measuring the conditional over- and under-representation of two-word multiword expressions (MWEs) in language use. Using the British National Corpus, we model the expected frequency of an MWE from its constituent-word fre...

TLD-YOLO: A Lightweight Detector with Cross-Scale Adaptive Fusion and Dual Attention for Tiny Litchi Detection and Counting in Unstructured Orchards

Accurate detection and counting of tiny litchi fruits in natural orchards are fundamental for approximate yield estimation and precision harvesting; however, small-target signals are easily lost during downsampling, while dense clusters, occlusion, and complex backgrounds further...

Nano‐Architectural Evolution and Hybridization Dynamics in Carbon Nanocoatings Under Electro‐Mechanical Coupling

ABSTRACT Current‐carrying tribological interfaces suffer from severe electrical corrosion because coupled electrical, mechanical, and tribochemical interactions continuously drive interfacial degradation. Although carbon‐based films exhibit excellent tribological and electrical p...

Transcriptomic and Metabolomic Analyses Reveal the Phenylpropanoid Metabolism Regulatory Network in Arabidopsis Response to Colletotrichum higginsianum Infection

Colletotrichum higginsianum (Ch) is a typical hemibiotrophic ascomycetous fungus. The diseases it causes often lead to considerable economic losses in global cruciferous crop production. However, current knowledge is still insufficient for us to gain a deeper understanding of how...

Integrated Analysis of Metabolome and Transcriptome Provides New Insights into the Genetic Basis Underlying the Regulation of α-Linolenic Acid Biosynthesis in Perilla frutescens Seeds

Perilla (Perilla frutescens) is an important oil-bearing crop rich in α-linolenic acid (ALA), and seed oil quality varies greatly among different germplasms. However, the molecular and metabolic mechanisms underlying genotypic differences in ALA accumulation remain unclear. In th...

Moderate discrimination but attenuated predictive precision: a multi-model external validation of prolonged postoperative length of stay models after lumbar interbody fusion in an independent cohort

Prolonged postoperative length of stay (PLOS) following lumbar interbody fusion is associated with increased morbidity such as nosocomial infection and venous thromboembolism, healthcare costs, and impaired recovery. Several prediction models have been proposed to identify patien...

Tensor-current contributions to B anomalies

Abstract Tensor-current operators, potentially generated by scalar leptoquarks in grand unified theories (GUTs), are among the plausible new physics (NP) candidates suggested by the anomalies observed in B -meson decays. As experimental data continue to accumulate, exploring this...

High‐Entropy Oxides Facilitated Heterojunction Engineering With Superlattice Cd 0.6 Mn 0.4 S for Enhanced Photocatalytic Hydrogen Evolution

This study successfully constructed a highly efficient and stable photocatalytic system based on a triple synergistic catalytic mechanism involving multimetal component synergy, interfacial charge rearrangement, and Schottky barrier modulation. One‐dimensional axially oriented su...

Palladium‐Catalyzed Cascade Carboesterification of Cycloalkenes With Alkynoic Acids: A Facile Access to Fused (E)‐Chloro‐Substituted γ‐Lactones

A palladium‐catalyzed regiodivergent carboesterification of cycloalkenes with alkynoic acids under aerobic conditions with ionic liquids as an environmentally benign medium is accomplished. Using a combination of 1 mol% IPr t Bu –Pd–Cin–Cl, 2 equiv. of LiCl in [Amim]BF 4 at rt fo...