Guizhou Minzu University

High-power erbium-doped waveguide amplifier by modal manipulation on thin-film lithium niobate

Erbium-doped thin-film lithium niobate waveguide amplifiers have attracted growing interests due to their compatibility with on-chip high-speed electro-optical modulation. Subject to the high coupling and propagation losses the off-chip output powers of such on-chip amplifiers ar...

Research on Current Fixed-Point Excitation Detection Method for Internal Defects in Prebaked Anode Carbon Blocks

Internal defects such as cracks and pores in prebaked anodes severely affect aluminum electrolysis efficiency and energy consumption. Existing detection methods face an irreconcilable contradiction among speed, cost, and accuracy. To address this issue, this paper proposes a curr...

Macroscopic and mesoscopic mechanical behavior of the interface between piles and unsaturated sand under vertical cyclic loading

Understanding the degradation of pile bearing capacity under vertical cyclic loading requires an in-depth investigation of the pile–unsaturated sand interface. This study employs a multi-scale approach—combining visualized cyclic loading tests, particle image velocimetry (PIV), a...

Design, Synthesis, and Antifungal Evaluation of Novel Perillaldehyde Oxadiazole Derivatives Bearing Hydrazide/Amide Moiety as Potential Succinate Dehydrogenase Inhibitors

Abstract To discover novel fungicides, four series of oxadiazole-containing perillaldehyde derivatives bearing hydrazide/amide moieties were designed, synthesized and evaluated for antifungal activity against seven phytopathogens. Among them, a perillyl-1,3,4-oxadiazole-hydrazide...

Research Progress and Prospect of Ultralow Phosphorus Steel Smelting Technology

Ultralow phosphorus steel (phosphorus content ≤ 0.005%) is a key material for high‐end equipment manufacturing in fields such as nuclear power, marine engineering, and high‐pressure vessels, where phosphorus content control is the core technology. Molten steel dephosphorization i...

An Adaptive Multi-Objective Particle Swarm Optimization Algorithm Based on Capacity-Driven Dual-Archive

Existing multi-objective particle swarm optimisation (MOPSO) algorithms often face bottlenecks when handling complex frontiers, such as gene loss caused by truncation of a single archive and search imbalance resulting from parameter stagnation. To address these challenges, this p...

Efficient Fluoride Removal Using Cerium-Modified Red Mud: Adsorption Mechanism, Interference Resistance and Environmental Safety

Abstract A cerium-modified red mud adsorbent (Ce-RM) was prepared from industrial red mud waste by acid activation, cerium-salt treatment and calcination, and applied to fluoride removal from aqueous solutions. Batch adsorption tests examined the effects of initial fluoride conce...

Atomic-Scale Control of π-Electron Magnetism in Metal-Free Phthalocyanine: A Theoretical Study

Abstract Recent progress in on-surface synthesis of carbon-based π-electron magnetic materials has established a promising platform for applications in spintronics and quantum technologies. Nonetheless, a critical challenge remains in the precise generation and modulation of delo...

Large tunneling magnetoresistance in room temperature magnetic tunnel junctions based on altermagnetic XV2Y2O

This work presents a comprehensive investigation of spin-dependent quantum transport properties of the emerging layered room temperature metallic altermagnet family X V 2 Y 2 O ( X = K, Rb, Cs; Y = S, Se, Te), based on first-principles calculations combined with the non-equilibri...

Influence of supercritical CO2-water soaking on fracture toughness of shale: Implications for shale gas recovery and CO2 sequestration

The fracture toughness of shale influences fracture network formation and CO 2 storage stability in shale reservoirs. To investigate this effect, semi-circular bending (SCB) tests and measurements of surface energy, fracture surface roughness, and mineral compositions were conduc...

Multifunctional Ca9Na 1-y Li y Y2/3(PO4)7-Based Phosphors: Li+/Na+ Substitution-Regulated Site-Related Eu2+ Emission and Eu2+→Mn2+ Energy Transfer

Abstract Activator-ion coordination in multisite inorganic hosts is key to luminescence modulation and multifunctional integration. However, most phosphor studies address limited functions, and single-host multiscenario platforms remain scarce. Herein, we report a β-Ca3(PO4)2-typ...

Rapid spontaneous generation of organosulfur from inorganic sulfur in atmospheric microdroplets

Abstract Organosulfur compounds are important constituents of atmospheric aerosols and have been extensively investigated through field observations, laboratory experiments, and atmospheric modeling. However, the mechanisms underlying their formation and atmospheric abundance rem...

Identification of Unstable Rock Blocks and Rockfall Hazard Assessment on a Karst Steep Rock Slope Using UAV Photogrammetry

Steep rock slopes are widely distributed in the karst mountainous regions of southwestern China, where structurally controlled rockfalls frequently threaten transportation infrastructure and human safety. Accurate identification of unstable rock blocks (URs) and quantitative asse...

Damage evolution of coal under SHPB impact and multi-scale simulation

As energy exploitation advances, operations are increasingly moving into deep coal seam regions. Understanding the dynamic mechanical properties of coal seams under complex stress conditions in such deep-seated environments has become a key focus in mining engineering. In this st...