211 Result(s)
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Article
Solar-powered miniature robot for on-site oil spill treatment under magnetic steering
Walking on the water surface is an effective method for miniature robots to transport payloads with dramatically decreased interfacial drag. Current aquatic robots reported are generally actuated by a beam of ...
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Article
Open AccessDesign, modeling, and manufacturing of high strain composites for space deployable structures
The demand for larger and lighter mechanisms for next-generation space missions necessitates using deployable structures. High-strain fiber polymer composites show considerable promise for such applications du...
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Article
Towards hydrometeorological thresholds of reservoir-induced landslide from subsurface strain observations
Synergistic multi-factor early warning of large-scale landslides is a crucial component of geohazard prevention and mitigation efforts in reservoir areas. Landslide forecasting and early warning based on surfa...
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Simultaneous detection of flare-associated kink oscillations and extreme-ultraviolet waves
Kink oscillations, which are frequently observed in coronal loops and prominences, are often accompanied by extreme-ultraviolet (EUV) waves. However, much more needs to be explored regarding the causal relatio...
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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
Adsorption of Cr(VI) on calcined MgAl-layered double hydroxides and recycling of spent adsorbents for the removal of organic dyes
Adsorption is considered an effective strategy for removing Cr(VI) from wastewater, but disposal of spent adsorbents is still a thorny problem. This work aims to develop an efficient adsorbent for Cr(VI) remov...
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Article
Dynamic contact characteristics of a rotating twisted variable-section blade with breathing crack
Crack failures frequently occur in aero-engine blades which can trigger a cascade of accidents. Previous studies have primarily focused on crack-induced nonlinear vibration, and the contact state of the crack ...
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Design, modeling, and evaluation of parallel continuum robots: A survey
Parallel continuum robots (PCRs) have attracted increasing attention in the robotics community due to their simplicity in structure, inherence with compliance, and easiness of realization. Over the past decade...
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Experimental and Simulation Study of Babbitt Alloy/Steel Composite in Swing Cold Metal Transfer (CMT) Welding Under Different Heat Input
In the study, the preparation process of ZChSnSb11Cu6/Q235B composite was investigated through the swing cold metal transfer (CMT) welding process. Based on the theory of heat transfer and the double-ellipsoid...
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Enhanced mechanical stability and corrosion resistance of superhydrophobic coating reinforced with inorganic binder
The development of superhydrophobic materials have demonstrated significant potential in the realm of corrosion protection for aluminum alloy (Al alloy) surfaces. However, the limited mechanical stability of s...
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Article
Removal of arsenic from arsenic-containing solution in a three-dimensional electrode reactor
Deep treatment, a method for further reducing the content of a target substance, for toxic arsenic (As) from water is vital to reduce environmental pollution and ensure human health. Here, we employed electros...
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Article
Damage mechanism and fracture evolution of rock containing defects with LCEM-GFEM method under explosive load
Defects in rock masses have significant influence on the fracture propagation during blasting. In this study, a numerical model is developed using the local cohesive element based on the global finite element ...
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Open AccessMirrorless MEMS imaging: a nonlinear vibrational approach utilizing aerosol-jetted PZT-actuated fiber MEMS scanner for microscale illumination
This study introduces a novel image capture and lighting techniques using a cutting-edge hybrid MEMS scanner system designed for compact microscopic imaging. The scanner comprises a tapered optical fiber waveg...
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Open AccessAdvances in high-performance MEMS pressure sensors: design, fabrication, and packaging
Pressure sensors play a vital role in aerospace, automotive, medical, and consumer electronics. Although microelectromechanical system (MEMS)-based pressure sensors have been widely used for decades, new trend...
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Selective leaching of nickel and cobalt from sintered nickel alloy by oxygen pressure acid leaching process
In this work, oxygen pressure acid leaching is implemented to augment the leaching efficiency of valuable metals from sintered nickel alloy. Techniques investigation shows that NiO in the sample and NiO coated...
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Article
Selective hydrogen reduction of binary iron-cobalt chlorides
Global demand for cobalt is proliferating with the booming usage and consumption of Li-ion batteries in energy storage applications. With high cobalt content, cobalt white alloy has been an important intermedi...
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Open AccessBeamforming: a spatial de-noising approach for civil structural health monitoring
In the civil structural health monitoring fields, monitored data suffer from noise and sensor faults. In practice, redundant sensors are usually deployed to monitor structural condition to obtain more accurate...
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Article
Relationships between rock ultrasonic properties with loading stresses and challenges in deep mining
In-situ stress measurement is a key task in deep underground mining activities. An efficient stress measurement technique is important for determining the safety of the surrounding rock mass. Rock acoustic cha...
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Article
Hollow structured SnO2/NxC composites: Preparation approach and promising performance in lithium-ion battery
Despite the high theoretical capacity as the anode material adopted in lithium-ion batteries, SnO2 materials undergo rapid capacity fading and low-rate performance due to the significant volume change and poor co...
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Article
Water retention behaviours of intact and recompacted loess exposed to multiple wetting-drying cycles
Wetting-drying cycles of weathering loading frequently lead to failure of infrastructures in loess regions, China. Water retention behaviours of loess are key information for capturing the physical causes of l...
