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Modeling and analysis of magnetic dipoles in weak magnetic field

WANG Zhaoxia, ZHANG Weimin, LIU Hongguang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 2, Pages 222-225 doi: 10.1007/s11465-008-0028-z

Abstract: The magnetic leakage field distribution resulting from linear defects of a tube sample in the geomagneticfield is modeled according to the magnetic dipole theory.The formula to compute the normal component of the weak magnetic field is deduced based on the spatialdistribution of the magnetic dipole.The shape and characteristics of the zero line (an important criterion for magnetic memory testing) of

Keywords： geomagnetic theory important criterion magnetic leakage normal component

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Multi-Material magnetic field-assisted additive manufacturing system for flexible actuators with programmablemagnetic arrangements

Frontiers of Mechanical Engineering 2024, Volume 19, Issue 2, doi: 10.1007/s11465-024-0788-0

Abstract: Manufacturing flexible magnetic-driven actuators with complex structures and magnetic arrangements toAmong various manufacturing technologies, magnetic-assisted digital light processing (DLP) stands outCurrent research on manufacturing magnetic flexible actuators mostly employs single materials, whichlimits the magnetic driving performance to some extent.Based on these characterizations, we propose a multi-material magnetic field-assisted DLP technology

Keywords： multi-material magnetic field-assisted manufacturing digital light processing flexible actuators magnetic arrangement

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Inexpensive synthesis of a high-performance Fe

Nadir Abbas, Godlisten N. Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3, Pages 405-416 doi: 10.1007/s11705-016-1579-x

Abstract: A sol-gel technique has been developed for the synthesis of a magnetite-silica-titania (Fe O -SiO -TiO ) tertiary nanocomposite with improved photocatalytic properties based on the use of inexpensive titania and silica precursors. The exceptional photocatalytic activity of the resulting materials was demonstrated by using them to photocatalyze the degradation of methylene blue solution. The best formulation achieved 98% methylene blue degradation. An interesting feature of the present work was the ability to magnetically separate and reuse the catalyst. The efficiency of the catalyst remained high during two reuses. The synthesized nanomaterials were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, ultra-violet-visible spectroscopy, diffuse reflectance spectroscopy, and thermogravimetric analysis. XRD analysis revealed the formation of multicrystalline systems of cubic magnetite and anatase titania crystals. SEM and TEM characterization revealed well-developed and homogeneously dispersed particles of size less than 15 nm. FTIR spectra confirmed the chemical interaction of titania and silica. It was further noticed that the optical properties of the prepared materials were dependent on the relative contents of their constituent metal oxides.

Keywords： sol-gel photocatalysis magnetic recovery TiO₂ Fe₃O₄ SiO₂

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Magnetostriction varieties and stress relief caused by pulsed magnetic field

Zhipeng CAI, Xinjie DUAN, Jian LIN, Haiyan ZHAO

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 354-358 doi: 10.1007/s11465-011-0123-4

Abstract:

Magnetostriction is investigated to evaluate the stress relief caused by pulsed magnetic field treatmentThe stress variations caused by pulsed magnetic treatment are also compared.find that the product of magnetostriction amplitude and stress magnitude is nearly a constant during magnetic

Keywords： magnetostriction pulsed magnetic field treatment stress relief

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Synergistic scale inhibition of polyaspartic acid composite with magnetic field

LIU Zhenfa, WANG Yanji, GAO Yuhua, ZHANG Lihui

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 261-265 doi: 10.1007/s11705-007-0047-z

Abstract: The scale inhibition of PASP composite and the effect of its synergism with a magnetic field on scaleexperiments show that the chelating function of PASP composite for Ca can be enhanced by synergism with a magnetic650 mg/L, HCO 1,300 mg/L and PASP composite 4 mg/L, the scale inhibition rate of PASP composite in magnetic

Keywords： synergism magnetic PBTCA dynamic acid–acrylic acid–acrylic

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Improved resilience measure for component recovery priority in power grids

Frontiers of Engineering Management 2021, Volume 8, Issue 4, Pages 545-556 doi: 10.1007/s42524-021-0161-5

Abstract: Consequently, the quick recovery of power grids after disasters has become a new research direction.The recovery priority of failed components after a disaster is determined according to the influenceResult shows that the recovery priorities of components with different importance measures vary.

Keywords： resilience measure power grid importance measure component recovery

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Fabrication of magnetic multi-template molecularly imprinted polymer composite for the selective and

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1395-5

Abstract:

• Magnetic multi-template molecularly imprinted polymer composite was

Keywords： Tetracyclines Removal Adsorption Molecularly imprinted polymer Magnetic graphene oxide

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Continuous size fractionation of magnetic nanoparticles by using simulated moving bed chromatography

Carsten-Rene Arlt, Dominik Brekel, Stefan Neumann, David Rafaja, Matthias Franzreb

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5, Pages 1346-1355 doi: 10.1007/s11705-021-2040-3

Abstract: The size fractionation of magnetic nanoparticles is a technical problem, which until today can only beUsing magnetic chromatography, we show a promising method for fractionation of magnetic nanoparticleswith respect to their size and/or magnetic properties.a separation sharpness of up to 0.52 with recovery rates of 100%.The continuous feed stream of magnetic nanoparticles could be fractionated with a space-time-yield of

Keywords： magnetic chromatography simulated moving bed chromatography magnetic nanoparticles size fractionation

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Rare-earth separation based on the differences of ionic magnetic moment via quasi-liquid strategy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10, Pages 1584-1594 doi: 10.1007/s11705-022-2189-4

Abstract: The differences of the ionic magnetic moment among rare earths are greater than that of ionic radius.Herein, a novel method based on the large ionic magnetic moment differences of rare earth elements wasionic liquid, then the ordering degree of them was improved with the Z-bond effect, and finally the magneticEr/Ho as examples, the results showed that Er(III) and Ho(III) containing ionic liquids had obvious magneticMagnetic separation via quasi-liquid system strategy provides a possibility of the novel, green, and

Keywords： rare earth element different magnetic moment magnetic separation ionic liquid

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oxidation capacity of ammonia-oxidizing archaeon originated from wastewater: Utilizing low-density static magnetic

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-020-1375-1

Abstract:

• AOA’s ammonia oxidizing capacity was enhanced under moderate magnetic

Keywords： Ammonia-oxidizing archaeon Ammonia oxidation Magnetic field Magnetotaxis Heredity

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The perturbed magnetic fields caused by mechanical stress

QIN Fei, YAN Dong-mei

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2, Pages 151-156 doi: 10.1007/s11465-006-0015-1

Abstract: In the framework of the linearized magnetoelastic theory, the perturbed magnetic fields caused by mechanicalThe effect of mechanical deformation on the magnetic fields was taken into account by coupling structuraldisplacement into the perturbed magnetic field continuous conditions on the boundary of the structureThe magnetic induction of the perturbed field is proportional to the applied force.the Earth s magnetic field, influence of the magnetic field on deformation of the structure can be neglected

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A new miniaturized engine based on thermomagnetic effect of magnetic fluids

Lujun ZHOU, Yimin XUAN, Qiang LI, Wenlei LIAN

Frontiers in Energy 2009, Volume 3, Issue 2, Pages 160-166 doi: 10.1007/s11708-009-0018-9

Abstract: A new engine system, essentially consisting of a permanent NdFeB magnet, a kerosene-based magnetic fluidand a rotor, is proposed based on the thermomagnetic effect of a temperature-sensitive magnetic fluidThe rotor was driven by the thermal convection of the magnetic fluid in the presence of a homogeneousexternal magnetic field.The performance of the motor is considerably influenced by the magnetic field imposed.

Keywords： magnetic fluid thermomagnetic effect engine

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Rotating magnetic beacons magnetic field strength size in SAGD

Bing TU, Desheng LI, Enhuai LIN, Bin LUO, Jian HE, Lezhi YE, Jiliang LIU, Yuezhong WANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 446-449 doi: 10.1007/s11465-010-0113-y

Abstract: Rotation magnetic beacons magnetic field strength is very important to drill parallel horizontal twinthere is a length of 12.6 mm with permanent magnet, and in the middle, there is a length of 78 mm with magneticThe magnetic field strength generated by the magnetic material of 1J12, 1J50, and 1J79 is analyzed, respectivelyANSOFT software is used to simulate the magnetic field strength generated by different magnetic materials

Keywords： rotating magnetic beacons steam assisted gravity drainage (SAGD) ANSOFT

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Technologies for pollutant removal and resource recovery from blackwater: a review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 7, doi: 10.1007/s11783-023-1683-3

Abstract:

● Blackwater is the main source of organics and nutrients in domestic wastewater.

Keywords： Blackwater Water-flushing toilet Sanitation Nutrient recovery Water reuse Sustainable development

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Magnetic confinement fusion: a brief review

Chuanjun HUANG, Laifeng LI

Frontiers in Energy 2018, Volume 12, Issue 2, Pages 305-313 doi: 10.1007/s11708-018-0539-1

Abstract: to peacefully utilize the fusion energy in various approaches, especially inertial confinement and magneticIn this paper, the main developments of magnetic confinement fusion with emphasis on confinement systemsThe scientific feasibility of magnetic confinement fusion has been demonstrated in JET, TFTR, JT-60,

Keywords： fusion energy magnetic confinement tokamak structural material superconducting magnet