62 Result(s)
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Article
Resourceful preparation of Sb2O3 in hazardous As-Sb dust from typical lead smelter
Hazardous arsenic antimony dust (HAAD), a perilous by-product with significant antimony and arsenic concentrations generated in lead smelters, poses a substantial environmental threat. The imperative of resour...
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Article
Enhanced transport of K-nZVI by bentonite suspensions in porous media
Due to high reactivity and relatively low cost, nano zero-valent iron (nZVI) has become an alternative material for in-situ remediation of contaminated sites. However, factors such as short transport distance ...
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Article
Preparation and characterization of high hard and high tough ultrafine WC ceramics containing hybrid graphene and SiC nanowire
The aggregation of low-dimensional nanofillers in the host ceramic matrix significantly discounted their reinforcing efficiency. Herein, employing two-dimensional graphene (G) and one-dimensional SiC nanowire ...
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Article
Study on stability mechanism and control techniques of surrounding rock in gob-side entry retaining with flexible formwork concrete wall
Gob-side entry retaining (GER) is a technique in non-pillar mining, which maintains the original mining roadway along the edge of gob and retains it as a mining roadway for the subsequent working face. This te...
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Article
Performance degradation prediction of extra-wide concrete self-anchored suspension bridge under vehicle load considering time-dependent effects
In order to study the influence of concrete shrinkage and creep effect and temperature change on the extra-wide concrete self-anchored suspension bridge under vehicle load, the Hunan Road Bridge, which is the ...
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Article
Study on detection of the internal quality of pumpkin seeds based on terahertz imaging technology
At present, the internal quality detection method of pumpkin seeds has the problems such as low efficiency and poor accuracy. Therefore, the combined terahertz time-domain spectroscopy (THz-TDS) imaging techno...
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Article
Stress wave propagation attenuation law and energy dissipation characteristics of rock-barrier-coal composite specimen under dynamic load
The active attenuation method of rockburst stress wave is an important research problem in coal roadway safety control. In this study, the strengths of different propagation media were analyzed and a new type ...
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Article
In situ self-nucleophilic synthesis of nano-Li4Ti5O12/reduced graphite oxide composite with mesopore-oriented porous structure for high-rate lithium ion batteries
It is the core to improve the electron/ion transfer features of Li4Ti5O12 for achieving high-rate anode in lithium ion batteries. By directly using graphite oxide powder, nano-Li4Ti5O12/reduced graphite oxide com...
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Article
La0.75Sr0.25Cr0.5Mn0.5O3−δ-Ce0.8Gd0.2O1.9 composite electrodes as anodes in LaGaO3-based direct carbon solid oxide fuel cells
Direct carbon solid oxide fuel cells (DC-SOFCs) are promising, green, and efficient power-generating devices that are fueled by solid carbons and comprise all-solid-state structures. Develo** suitable anode ...
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Article
Mechanism of corrosion fatigue fracture of friction stir welding joints of 7075 aluminium alloy in 3.5% NaCl solution
The corrosion fatigue fracture mechanism of friction stir welding (FSW) joints of 7075 aluminium alloy in 3.5% NaCl solution is investigated. The corrosion fatigue crack source originates from the junction of ...
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Article
Fracture evolution and localization effect of damage in rock based on wave velocity imaging technology
By utilizing wave velocity imaging technology, the uniaxial multi-stage loading test was conducted on siltstone to attain wave velocity imagings during rock fracture. Based on the time series parameters of aco...
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Article
A prediction method of operation trend for large axial-flow fan based on vibration-electric information fusion
As the critical equipment, large axial-flow fan (LAF) is used widely in highway tunnels for ventilating. Note that any malfunction of LAF can cause severe consequences for traffic. Specifically, fault deterior...
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Article
Porous layered La0.6Sr0.4Co0.2Fe0.8O3 perovskite with enhanced catalytic activities for oxygen reduction
Low-cost catalysts with high activity are in immediate demand for energy storage and conversion devices. In this study, polyvinyl pyrrolidone was used as a complexing agent to synthesize La0.6Sr0.4Co0.2Fe0.8O3 (L...
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Article
A data-driven early micro-leakage detection and localization approach of hydraulic systems
Leakage is one of the most important reasons for failure of hydraulic systems. The accurate positioning of leakage is of great significance to ensure the safe and reliable operation of hydraulic systems. For e...
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Article
Excavation-induced microseismicity and rockburst occurrence: Similarities and differences between deep parallel tunnels with alternating soft-hard strata
Excavation-induced microseismicity and rockburst occurrence in deep underground projects provide invaluable information that can be used to warn rockburst occurrence, facilitate rockburst mitigation procedures...
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Article
Experimental investigation on failure process and spatio-temporal evolution of rockburst in granite with a prefabricated circular hole
To study the mechanism of rockburst and its spatio-temporal evolution criterion, a rockburst simulation experiment was performed on granite specimens, each with a prefabricated circular hole, under different l...
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Article
Tunable left-hand characteristics in multi-nested square-split-ring enabled metamaterials
Left-hand materials have drawn increasing attention from many disciplines and found widespread application, especially in microwave engineering. A sandwiched metamaterial consisting of multi-nested square-spli...
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Article
Fractal evolution mechanism of rock fracture in undersea metal mining
Through rock mechanics test, similar simulation experiment, borehole photographic observation of rock fissure, numerical simulation calculation of plastic zone distribution and deformation monitoring of rock m...
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Article
Promotion of conversion activity of flue gas desulfurization gypsum into α-hemihydrate gypsum by calcination-hydration treatment
The massive accumulation of flue gas desulfurization (FGD) gypsum produced in the wet limestone-gypsum flue gas desulfurization process not only encroaches on lands but also causes serious environmental pollut...
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Article
Fabrication, property characterization and thermal performance of composite phase change material plates based on tetradecanol-myristic acid binary eutectic mixture/expanded perlite and expanded vermiculite for building application
A binary eutectic mixture composed of tetradecanol (TD) and myristic acid (MA) was maximally absorbed into the microstructures of expanded perlite (EP) and expanded vermiculite (EVMT), respectively, through a ...
