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vibration, etc ; Lewis acids; arsenic; energy; flue gas; spectroscopy; toxicity; zinc; Show all 8 Subjects
Abstract:
... The commercial V₂O₅ −WO₃/TiO₂ (VWTi) catalysts often suffer from a serious joint deactivation by multiple heavy metals in the flue gas for NOₓ removal by NH₃-SCR. Herein, we report an extraordinary deactivation offset effect between Zn and As on VWTi with alleviation of the toxic effects of the heavy metals by “like cures like”. With the As&Zn content of 4 wt%, VWTi-As&Zn exhibited over 97% NO con ...
vibration, etc ; catalytic activity; dyes; energy; polydimethylsiloxane; reactive oxygen species; remediation; rhodamines; wastewater; Show all 9 Subjects
Abstract:
... Piezoelectricity as a physical property has received great attention due to its excellently functional applications, especially in piezoelectric catalysis and mechanical energy harvesting. To take full advantage of the functions of piezoelectric materials, (K₀.₅Na₀.₅)₀.₉₄Li₀.₀₆NbO₃ (KNN6L) piezoelectric powders were compounded with polydimethylsiloxane (PDMS) in this work. The developed KNN6L-PDMS ...
vibration, etc ; adulterated products; electronic sensing; food chemistry; nondestructive methods; prediction; spectroscopy; traceability; Show all 8 Subjects
Abstract:
... The growing concerns about the quality and safety of herbs and spices among consumers have increased the demand for technical testing. Recently, non-destructive analysis techniques have been widely studied and applied. Generally, a single technology has certain limitations, which are not enough to fully describe the characteristics of complex products (dynamic or complex structure). Combining non- ...
vibration, etc ; adenosine triphosphate; amino acid metabolism; biosynthesis; energy; energy metabolism; food chemistry; fruit quality; fruits; mechanical damage; metabolomics; secondary metabolites; transportation; Show all 13 Subjects
Abstract:
... Mechanical damage caused by vibration during transportation can destroy organization structure and reduce the fruit quality. The objective was to reveal the mechanism of hypobaric treatment on energy metabolism in vibration-injured 'Huangguan' pears based on metabolomics. Results showed that hypobaric treatment delayed the decline of adenosine triphosphate (ATP) content, energy charge (EC), H⁺-ATP ...
vibration, etc ; aerogels; carbon; carbon nanotubes; energy conversion; heat transfer; molecular dynamics; paraffin wax; phase transition; polymerization; pyrroles; thermal conductivity; thermal energy; vapors; Show all 14 Subjects
Abstract:
... Phase change materials (PCMs) have been widely investigated as promising thermal management materials due to their high thermal storage capacity, satisfactory heat transfer rate and multi-responsive energy conversion and storage characteristics. In this work, a shape-stabilized solar-/electro- responsive thermal energy capture and storage system is proposed involving polypyrrole (PPy)-deposited ca ...
vibration, etc ; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; catalysts; catalytic activity; dielectric spectroscopy; pH; rhodamines; surface area; transmission electron microscopy; ultrasonics; China; Show all 13 Subjects
Abstract:
... This paper synthesized a new type of ternary piezoelectric catalyst MoOₓ/ZnS/ZnO (MZZ) by a one-step method. The catalytic degradation of Rhodamine B (RhB) solution (10 μg/g, pH = 7.0) shows that the composite catalyst has excellent piezoelectric catalytic activity under ultrasonic vibration (40 kHz). The piezoelectric degradation rate of the optimal sample reached 0.054 min⁻¹, which was about 2.5 ...
... Platform vibration introduces sinusoidal modulation in inverse synthetic aperture lidar (ISAL) imaging, which causes paired echoes in ISAL imaging. In this paper, a varying amplitude vibration phase suppression algorithm is proposed. Working without prior knowledge, the proposed algorithm can suppress paired echoes under the condition of varying vibration amplitude and will not introduce new phase ...
... The size segregation of spherical and cubical particles under a horizontal swirling vibration is studied in this work using DEM. The extent of segregation is characterised by the volume concentration of particles and its dependencies on various operational and material parameters are systematically explored. It is found that an almost perfect segregation state can be achieved by using a high vibra ...
... This work investigates the performance of an electromagnetic vibration harvester for two-dimensional vibrations with variable magnetic stiffness and electromagnetic damping. The device consists of a free-to-move cylindrical magnetic structure with a set of bearings located on top and bottom, a couple of coils located on top and bottom of the device and finally a fixed system of disk-shaped magnets ...
... In order to study the cavitation performance of centrifugal pumps with low specific speeds under the condition of gas–liquid two-phase flow, a cavitation test rig for pumping gas–liquid two-phase flow was set up. The cavitation performance of the pump with a specific speed of 32 was studied. The variation of the head, pressure pulsation intensity, and vibration intensity with the cavitation allowa ...
... Bistable systems possess broadband characteristics and can have large-amplitude oscillations under low amplitude excitations. This work is aimed to investigate the potential of a bistable piezoelectric-based absorber (BPA) for the purpose of simultaneous energy harvesting and vibration suppression. The BPA composed of a cantilever beam with PZT layers and two permanent magnets. The interactions du ...
... The present work focuses on granular flows in a nearly-2D silo when external vibrations are applied. Experimental measurements and numerical simulations based on discrete element method (DEM) were performed in order to study the impact of both vibrations and opening size on the flow. Although vibrations make the flow possible for small opening sizes, we show that they can either increase or decrea ...
... Vibrating screens are widely used in industry but it is difficult to consider the enormous controlling variables and complicated particle-particle interactions in current screen process models. This study develops a new process model for vibrating screens by the combination of discrete element method simulation and physics-informed machine learning. First, based on the assumption that the particle ...
... In order to explore more efficient and economical method to harvest footstep energy, a double-storey piezoelectric coupled beam (DPCB) and a corresponding piezoelectric brick are developed. The design of the DPCB makes the piezoelectric patches bonded on its piezoelectric coupled segments (PCSs) to be efficiently used for their uniform surface strain in the vibration process. Two piezoelectric bri ...
vibration, etc ; adsorption; anodes; lithium; photoluminescence; Show all 5 Subjects
Abstract:
... A new two-dimensional material B₂S₂ has been successfully synthesized for the first time and validated using first-principles calculations, with fundamental properties analyzed in detail. B₂S₂ has a similar structure as transition-metal dichalcogenides (TMDs) such as MoS₂, and the experimentally prepared free-standing B₂S₂ nanosheets show a uniform height profile lower than 1 nm. A thickness-modul ...
vibration, etc ; corrosion; quantitative analysis; radar; Show all 4 Subjects
Abstract:
... Early nondestructive inspection of rebar corrosion in reinforced concrete structures is important, but a practical, accurate, high-speed, and high-resolution method has not yet been proposed. We have proposed a vibro-Doppler radar (VDR) method for quantitative evaluation of rebar corrosion based on vibration displacement of a rebar sinusoidally vibrated by an excitation coil. However, this method ...
vibration, etc ; anisotropy; fluorescence; photocatalysis; photocatalysts; Show all 5 Subjects
Abstract:
... Bimetallic nanostructures are a promising candidate for plasmon-driven photocatalysis. However, knowledge on the generation and utilization of hot carriers in bimetallic nanostructures is still limited. In this work, we explored Pt position-dependent photocatalytic properties of bimetallic Au nanobipyramids (Au NBPs) with single-molecule fluorescence imaging. Compared with all-deposited core–shell ...
vibration, etc ; alternative medicine; electromyography; muscles; Show all 4 Subjects
Abstract:
... BACKGROUND: Whole-body vibration (WBV) training can provoke reactive muscle response and thus exert beneficial effects in various neurological patients. This study aimed to investigate the muscles activation and acceleration transmissibility of the lower extremity to try to understand the neuromuscular control in the Parkinson’s disease (PD) patients under different conditions of the WBV training, ...
... Seismic geophones have been frequently used in combination with metal plates to indirectly estimate bedload flux in gravel bed mountain rivers. This indirect method has been calibrated with direct measurements in several conditions and proved effective to provide relevant information on spatial and temporal scales otherwise impossible to explore. Notwithstanding, a detailed description of the vibr ...
vibration, etc ; accelerometers; data collection; industry; Show all 4 Subjects
Abstract:
... Rotating machines as core component of an industry can effectively be monitored through vibration analysis. Considering the importance of vibration in industrial condition monitoring, this article reports and discusses triaxial vibration data for motor bearing faults detection and identification. The data is acquired using a MEMS based triaxial accelerometer and the National Instruments myRIO boar ...