154 Result(s)
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Article
Role of inclination angle on columnar-to-equiaxed transition in the eutectic Al-5Mg-2Si alloy fabricated by laser powder bed fusion
In this study, the effect of inclination angles relative to the building direction in the additively manufactured eutectic Al-5Mg-2Si alloy was investigated through the laser powder bed fusion (LPBF). The micr...
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Article
Mechanism development of strength contributed by CPB with rice husk ash
Rice husk ash (RHA) is currently utilized as a supplementary cementitious material in cement products due to its pozzolanic properties. This study aims to investigate the pozzolanic effect (PE) and filler effe...
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Article
Synthesis of foamed geopolymers by substituting fly ash with tailing slurry for the highly efficient removal of heavy metal contaminants: Behavioral and mechanistic studies
This study aimed to synthesize porous geopolymers from tailing slurry, a byproduct of bauxite mining, for use as potential materials for groundwater remediation. The effects of various factors, such as foaming...
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Article
Coal fly ash resource utilization: Effects of inorganic minerals amendments on CFA-originated opal/sand aggregates formation
Opal (amorphous silica, SiO2·nH2O), a solid waste byproduct of the alkaline extracting alumina from coal fly ash, exhibits strong adsorption properties and is a secondary/clay mineral in the soil. Combining opal ...
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Article
The identification method for rock strength and joint while drilling based on cutting energy density
Rock strength and joint parameters are the basic parameters reflecting engineering rock quality. The traditional rock strength testing method requires taking cores from the surrounding rock on site and transpo...
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Article
Roof control mechanism and partition compensation support technology of gob-side entry formed by N00 mining method in thin coal seam
To achieve scientific and accurate support for the roadway roof in the N00 mining method for thin coal seams, the roof-cutting self-forming roadway is divided into two stages: the advanced chamber stage (Stage...
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Article
Strength and failure characteristics of coal measures mudstone specimens containing a prefabricated flaw under true triaxial tests
In this study, a series of coal measures mudstone specimens containing a prefabricated flaw were subjected to true triaxial test (TTT), namely, specimens of the intermediate principal stress (σ2) parallel to pref...
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Article
Persistent activation of peroxymonosulfate by MoS2@FeOOH/ceramsite composite for continuous flow degradation of sulfamethoxazole
Within the realm of wastewater treatment, the restrictions of inter-particle agglomeration and difficulty in recovery of traditional powder materials greatly limited their large-scale application. Hence, a nov...
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Article
Research on efficient utilization of high-phosphorus oolitic hematite for iron enrichment and dephosphorization by hydrogen mineral phase transformation
The paper proposes the innovative technology of hydrogen mineral phase transformation–magnetic separation–acid leaching for iron enrichment and dephosphorization, based on the mineralogical characteristics of ...
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Article
Novel insights into the mechanism of lime method based on calcium dioleate and mineral surface transformation
The lime method is one of the most common flotation processes, which can achieve flotation separation of scheelite, fluorite and calcite. The large amount of calcium ions released by lime easily formed calcium...
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Article
Nanostructured porous carbons derived from ZIF-67 frameworks for capacitive deionization
Capacitive deionization (CDI) is a promising technology for removing salt from brackish water, and the desalination performance greatly depends on the structures and properties of electrode materials. In this ...
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Article
Removal of impurity elements from waste lithium-ion batteries powder by oxidation roasting, cyclic leaching, and precipitation method
In recent years, the efficient and clean recovery of valuable metals from waste lithium-ion batteries (LIBs) has become a hot spot in the field of resource recycling, which will produce significant environment...
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Article
Localized corrosion process of Al-Zn-Mg-Cu-Zr alloy: Transitions from pitting corrosion to intergranular corrosion
The localized corrosion mode and process dependence on ageing conditions for Al-7.82Zn-1.99Mg-2.41Cu-0.12Zr alloy were investigated. Intergranular corrosion (IGC) is the dominant corrosion mode for UA temper a...
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Article
Effect of petrographic characteristics on uniaxial compressive strength of granitic rocks from **njiang, China
The petrographic characteristics of rocks are the determining factors affecting their mechanical properties. This study aims to intensively assess the effect degree of petrographic characteristics of granitic ...
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Article
Effect of oblique incident wave perturbation on rock spalling: An insight from DEM modelling
In order to study spalling failure characteristics of rock under oblique incidence of stress wave, a split Hopkinson pressure bar (SHPB) spalling test with a special shaped striker was simulated by Particle Fl...
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Article
Insight of feature and structure for Al-starch colloidal depressant based on experiments and density function theory computation
Al-starch has been successfully used in the inhibition for fine chlorite and calcite, while its fundamental feature and structure have not been explored. This study has found that the size and zeta potential o...
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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
Simultaneously measuring initiation toughness of pure mode I and mode II cracks subjected to impact loads
In order to simultaneously measure the initiation toughness of pure mode I and mode II cracks in one specimen, a large-size double-cracked concave-convex plate (DCCP) specimen configuration was proposed. Impac...
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Article
Synthesis and applications of Ag@C composites: Progress and opportunity
Develo** classes of Ag@C composites stand out for their one of a kind structure and novel physicochemical properties in later a long time. This review explores the current state-of-the-art progress in the pr...
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Article
Numerical simulation and experimental study of hybrid laser-electric arc welding between dissimilar Mg alloys
This work aims to establish a suitable numerical simulation model for hybrid laser-electric arc heat source welding of dissimilar Mg alloys between AZ31 and AZ80. Based on the energy conservation law and Fouri...
