Lanzhou University of Technology

Electrodeposition Coupled with In Situ Selenization for Sb2Se3 Thin Films toward Enhanced Photoelectrochemical Performance

Abstract Photoelectrochemical (PEC) water splitting is a crucial approach for achieving sustainable solar hydrogen production. Antimony selenide (Sb2Se3) is recognized as a highly promising photocathode for PEC water splitting. However, the omnipresent selenium vacancies (VSe) in...

Effect of thermal treatment on electrochemical performance of diesel particle-based electrodes for supercapacitors

This study investigates the potential of diesel particles (DPs) emitted from marine diesel engine combustion as electrode materials for supercapacitors. The collected DPs were chemically purified and thermally treated at different temperatures to prepare carbon-based electrodes....

Impact dynamic buckling of graphene platelets reinforced functionally graded rods

The dynamic buckling behaviours of functionally graded (FG) rods reinforced with graphene platelets (GPLs) under axial impact are comprehensively analysed using the energy method, with particular emphasis on explicitly accounting for the effects of stress wave propagation. The ef...

Exogenous Myo-Inositol Enhances Drought Tolerance in Potato by Modulating Jasmonic Acid Signaling and Flavonoid Antioxidant Pathways

Drought is the major abiotic stress restricting potato seedling growth and tuber yield formation. Exogenous myo-inositol (MI) has been reported to alleviate stress effects in various crops. However, the optimal foliar MI concentration for potato and its underlying transcriptional...

Predictive modeling and engineering validation of ladle draining in bottom pouring

In bottom pouring, ladle draining directly affects mold filling stability, solidification behavior, and ingot quality. To describe the draining process under the combined effects of a continuously decreasing liquid level and changes in slide-gate opening, a predictive mathematica...

Quaternary Ammonium Lignin Enabling High‐Na + ‐Conductivity Gel Electrolyte and NaF‐Rich SEI Toward High‐Safety Sodium Metal Batteries

ABSTRACT Sodium metal batteries (SMBs) using gel polymer electrolytes (GPEs) are considered promising candidates for low‐cost, high energy density, and high‐safety energy storage devices. However, a persistent challenge lies in simultaneously achieving high Na + conductivity of G...

Compound activation of iron ore tailings using industrial solid Wastes: Pozzolanic Activity, Microstructure, and mechanism

This study aimed to develop a lower-burden activation strategy for iron ore tailings (IOTs) by replacing conventional chemical activators with industrial solid wastes (ISWs) and systematically comparing mechanical activation (MA), chemical–mechanical compound activation (CMA), an...

Optimization of the Extraction Process and Preliminary Purification of Total Flavonoids from Hedysari Radix Using Response Surface Methodology

Hedysari Radix, a valuable traditional Chinese medicinal herb, is rich in flavonoid constituents with considerable potential for the development of anticancer and immunomodulatory therapeutic agents. In this work, an integrated high-efficiency technical workflow was constructed f...

Co-enhancement of energy efficiency and dynamic flexibility for indirect air-cooled systems under frequent peak-shaving: Trade-offs of cost, performance and robustness

Deep peak-shaving operation of coal-fired power units requires heat-exchange equipment to rapidly track varying loads. Indirect air-cooled units are central to power supply in water-scarce regions, and their cold-end system rejects heat to ambient air and possesses substantial th...

Study on the Scale Effects of Water–Sediment Characteristics in a Trapezoidal Desilting Channel with a Swirling Flow Generator

Abstract To clarify how scale effects alter the water–sediment characteristics of trapezoidal desilting channels with a swirling flow generator (TDCSFG) from model to prototype scale, this study combines numerical simulation with experimental validation. It systematically investi...

Anisotropic magnetic damping and interface spin transport in fully epitaxial cubic Fe74V26/Pt heterostructure

The directional control of magnetic damping and interfacial spin transport has emerged as a promising yet challenging route toward anisotropic spintronic devices. In this work, we investigated the magnetic damping and spin-pumping effect of fully epitaxial Fe74V26/Pt heterostruct...

Design and implementation of sheep posture estimation algorithm based on skeletal keypoint localization

Automated sheep posture recognition can provide posture-related behavioural information for precision livestock monitoring. Manual video observation is labour-intensive, and contact sensor-based methods may require specialized installation. This study developed a non-contact shee...

Research on grouting reinforcement and seismic response of a grid-type tunnel anchorage in soft rock conditions

Under soft rock conditions, conventional tunnel-type anchorage (TTA) relies strongly on the clamping action of the surrounding rock, which may limit their load-transfer efficiency and seismic performance under unfavorable geological conditions. To improve the interaction between...

Energy-Efficient Calcium Looping with Vacuum-Assisted CaCO3 Decomposition for Biomass-Derived Hydrogen Production

The aim of this study is to propose and evaluate a novel hydrogen production process that integrates biomass gasification and calcium looping with vacuum-assisted low-temperature CaCO3 decomposition. To achieve this objective, excess CaO is utilized as a sensible heat storage med...

Optimal design of distributed energy systems in cold regions across renewable energy penetration rates

The low-carbon transition of integrated power systems drives a continuous rise in renewable energy penetration rate (REPR), which profoundly influences the optimal design and operation of grid-connected distributed energy systems (DES). Aiming at the issue that existing studies r...

Leakage control and cooling mechanisms in LO2 lubricated mechanical seals with backflow channels under high-speed conditions

To address the problem that low-viscosity media are prone to causing excessive leakage of mechanical seals under high-speed conditions, this paper proposes a leakage suppression scheme based on the channel backflow control. A continuous boiling numerical model for mechanical seal...

Gain scheduling multi-model predictive control of the outlet temperature for the molten salt linear Fresnel collector

The molten salt linear Fresnel collector (LFC) exhibits operational characteristics such as pronounced time delays, significant nonlinearity, stringent constraints on molten salt flow velocity, and complex operating conditions. Addressing the limitations of existing control strat...

Precise Nanoscale Mapping of Electric Fields Across Random Grain Boundaries in Polycrystalline Oxides Using Precession‐Assisted 4D‐STEM

ABSTRACT Space charge layers (SCLs) at grain boundaries play a crucial role in modulating electric fields and thereby influence functional properties of materials. However, experimental analysis of these localized electric fields and the corresponding charge distribution remains...

Design, Synthesis, and Biological Evaluation of Novel, Fluorinated Camptothecin Derivatives as Potential Topoisomerase I Inhibitors

Abstract Camptothecin (CPT), a classical topoisomerase I (TOP I) inhibitor, shows potent antitumor activity but is limited by toxicity and lactone instability. Herein, structural optimization of the CPT scaffold was conducted via A-ring fluorination and C-7 and C-17 modifications...

Photo-Induced Three-Component Radical Trifluoromethylation/Heteroarylation of Alkenes via EDA Complexes

Abstract This study develops a visible-light-induced electron donor–acceptor (EDA) complex strategy, employing the inexpensive and readily available DBU as the electron donor and the industrially available CF3Br as the trifluoromethyl source, to achieve the trifluoromethylation/h...