Tao Song

Institute of Electrical Engineering

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Long‐Fei Wu

Centre National de la Recherche Scientifique

D. Casadei

University of Johannesburg

G. Barbier

University of Geneva

K. Hangarter

RWTH Aachen University

H. Suter

European Organization for Nuclear Research

A. Mihul

University of Bucharest

G. Ambrosi

Istituto Nazionale di Fisica Nucleare, Sezione di Perugia

A. Schultz von Dratzig

RWTH Aachen University

F. Pauss

ETH Zurich

Min Yang

Institute of High Energy Physics

Cooperative Institutions

Chinese Academy of Sciences

120

RWTH Aachen University

Istituto Nazionale di Fisica Nucleare, Sezione di Bologna

European Organization for Nuclear Research

University of Chinese Academy of Sciences

Centre National de la Recherche Scientifique

University of Bologna

Massachusetts Institute of Technology

Istituto Nazionale di Fisica Nucleare

Istituto Nazionale di Fisica Nucleare, Sezione di Perugia

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Wind turbine fault diagnosis based on Morlet wavelet transformation and Wigner-Ville distribution

Renewable Energy (2010)

Baoping Tang Wenyi Liu Tao Song

Morlet wavelet

Continuous wavelet transform

Instantaneous phase

Wigner distribution function

Condition Monitoring

10.1016/j.renene.2010.05.012

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Citations (243)

Improvement of Spatial Memory Disorder and Hippocampal Damage by Exposure to Electromagnetic Fields in an Alzheimer’s Disease Rat Model

PLoS ONE (2015)

Xiao Liu Hongyan Zuo Dewen Wang Ruiyun Peng Tao Song

Although some epidemiological investigations showed a potential association between long-term exposure of extremely low frequency electromagnetic fields (ELF-EMF) and Alzheimer's disease (AD), no reasonable mechanism can explain this association, and the related animal experiments are rare. In this study, ELF-EMF exposure (50Hz 400µT 60d) combined with D-galactose intraperitoneal (50mg/kg, q.d., 42d) and Aβ25–35 hippocampal (5μl/unilateral, bilateral, single-dose) injection was implemented to establish a complex rat model. Then the effects of ELF-EMF exposure on AD development was studied by using the Morris water maze, pathological analysis, and comparative proteomics. The results showed that ELF-EMF exposure delayed the weight gain of rats, and partially improved cognitive and clinicopathologic symptoms of AD rats. The differential proteomic analysis results suggest that synaptic transmission, oxidative stress, protein degradation, energy metabolism, Tau aggregation, and inflammation involved in the effects mentioned above. Therefore, our findings indicate that certain conditions of ELF-EMF exposure could delay the development of AD in rats.

10.1371/journal.pone.0126963

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Citations (39)

Quantum dot-based immunochromatography test strip for rapid, quantitative and sensitive detection of alpha fetoprotein

Biosensors and Bioelectronics (2011)

Qiuhua Yang Xiaoqun Gong Tao Song Jiumin Yang Sheng-Jiang Zhu

Concordance

ICTs

Electrochemiluminescence

False positive rate

Alpha-fetoprotein

10.1016/j.bios.2011.09.002

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Citations (176)

Extremely Low-Frequency Magnetic Exposure Appears to Have No Effect on Pathogenesis of Alzheimer’s Disease in Aluminum-Overloaded Rat

PLoS ONE (2013)

Cheng Zhang Yue Li Chao Wang Ruili Lv Tao Song

Objective Extremely low-frequency magnetic field (ELF-MF) has been reported to be of potential pathogenetic relevance to Alzheimer's disease (AD) for years. However, evidence confirming this function remains inconclusive. Chronic Al treatment has been identified as a contributing factor to cognitive function impairment in AD. This study aims to examine whether or not ELF-MF and Al have synergistic effects toward AD pathogenesis by investigating the effects of ELF-MF with or without chronic Al treatment on SD rats. Methods Sprague-Dawley (SD) rats were subjected one of the following treatments: sham (control group), oral Al (Al group), ELF-MF (100 µT at 50 Hz) with oral Al (MF+Al group), or ELF-MF (100 µT at 50 Hz) without oral Al (MF group). Results After 12 wk of treatment, oral Al treatment groups (Al and MF+Al groups) showed learning and memory impairment as well as morphological hallmarks, including neuronal cell loss and high density of amyloid-β (Aβ) in the hippocampus and cerebral cortex. ELF-MF without Al treatment showed no significant effect on AD pathogenesis. ELF-MF+Al treatment induced no more damage than Al treatment did. Conclusions Our results showed no evidence of any association between ELF-MF exposure (100 µT at 50 Hz) and AD, and ELF-MF exposure does not influence the pathogenesis of AD induced by Al overload.

Pathogenesis

10.1371/journal.pone.0071087

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Citations (11)

Improvement of the Measurement Method of Rock Magnetic Properties Based on the Scanning SQUID Microscope With an <italic>In Situ</italic> Magnetization/Demagnetization Field

IEEE Transactions on Magnetics (2018)

Junwei Du Qingmeng Wang Tao Song

A scanning superconducting quantum interference device microscope with an in situ magnetization/demagnetization field was used to obtain the distribution of the magnetic field and the remanent curves of a wafer sample. It can avoid the position deviation, waste of time, and other interferences caused by the samples' transference between different procedures. The original method of measurement was only functional, with the scanning of samples and detection of preset measured points. The more preset measured point, the finer the sample magnetic characteristic, but the consumption of time and liquid helium will increase. In this paper, we improved the measurement method to reduce the time required for measurement without missing feature points. The sample was scanned first to obtain the contour map of the magnetic field distribution, and then the extreme points in the contour map were selected to be measured for the remanent curves. A wafer geological sample was measured with this improved method and apparent differences in the remanent curves at different measurement points. This improvement of measurement method could reduce the consumption of liquid helium and increase the measurement efficiency by 154%, which is beneficial to the general practical application of this system.

Scanning SQUID microscopy

10.1109/tmag.2018.2845465

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Light irradiation helps magnetotactic bacteria eliminate intracellular reactive oxygen species

Environmental Microbiology (2017)

Kefeng Li Pingping Wang Chuanfang Chen Changyou Chen Lulu Li

Summary Magnetotactic bacteria (MTB) demonstrate photoresponse. However, little is known about the biological significance of this behaviour. Magnetosomes exhibit peroxidase‐like activity and can scavenge reactive oxygen species (ROS). Magnetosomes extracted from the Magnetospirillum magneticum strain AMB‐1 show enhanced peroxidase‐like activity under illumination. The present study investigated the effects of light irradiation on nonmagnetic (without magnetosomes) and magnetic (with magnetosomes) AMB‐1 cells. Results showed that light irradiation did not affect the growth of nonmagnetic and magnetic cells but significantly increased magnetosome synthesis and reduced intracellular ROS level in magnetic cells. Quantitative reverse transcription polymerase chain reaction (qRT‐PCR) was performed to analyse the expression level of magnetosome formation‐associated genes ( mamA , mms6 , mms13 and mmsF ) and stress‐related genes ( recA , oxyR , SOD , amb0664 and amb2684 ). Results showed that light irradiation upregulated the expression of mms6 , mms13 and mmsF . Furthermore, light irradiation upregulated the expression of stress‐related genes in nonmagnetic cells but downregulated them in magnetic cells. Additionally, magnetic cells exhibited stronger phototactic behaviour than nonmagnetic ones. These results suggested that light irradiation could heighten the ability of MTB to eliminate intracellular ROS and help them adapt to lighted environments. This phenomenon may be related to the enhanced peroxidase‐like activity of magnetosomes under light irradiation.

Magnetosome

Magnetotactic Bacteria

10.1111/1462-2920.13864

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Citations (18)

Search for antihelium in cosmic rays

Physics Letters B (1999)

J. Alcaraz Maestre D. Alvisi B. Alpat G. Ambrosi H. Anderhub

Rigidity (electromagnetism)

10.1016/s0370-2693(99)00874-6

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Citations (127)

The Potential of Marine Ferromanganese Nodules From Eastern Pacific as Recorders of Earth's Magnetic Field Changes During the Past 4.7 Myr: A Geochronological Study by Magnetic Scanning and Authigenic ¹⁰Be/⁹Be Dating

Journal of Geophysical Research Solid Earth (2020)

Liang Yi Martín Medina‐Elizalde G. Kletetschka Huiqiang Yao Quentin Simon

Abstract The Clarion and Clipperton Fracture Zones in the Eastern Pacific are well known as a manganese nodule belt, which developed since the late Oligocene. The slow growth rate of these marine ferromanganese nodules implies that they have potentially recorded long‐term environmental changes. To produce environmental records from these nodules, their chronology needs to be established first. In order to achieve this objective, many dating methods have been applied; however, due to relatively low‐resolution temporal constraint, high‐resolution environmental signals recorded in marine ferromanganese nodules have not been well documented yet. In this paper, we present a geochronological study based jointly on magnetic scanning and analyses of the authigenic beryllium isotopes (authigenic 10 Be/ 9 Be) and the cobalt (Co) flux of a marine ferromanganese nodule. Results lead to the following observations: (1) The growth of the studied nodule resulted from a combination of hydrogenetic and diagenetic processes, and (2) a total of 24 magnetozones is recognized for the studied nodule. Correlation to the geomagnetic polarity timescale suggests that chrons from C3n.2r to C1n were recorded in the nodule, implying that the growth of this nodule initiated ~4.70 Ma, which agrees well with the authigenic 10 Be/ 9 Be and Co chronometers. Furthermore, a consistent pattern of broad paleomagnetic field variations was observed between the nodule's magnetic signal and the ocean‐floor magnetic fields of the South Atlantic, confirming the validity of our growth model. Overall, our study highlights the potential of marine ferromanganese nodules from the Eastern Pacific as recorders of changes in Earth's magnetic field.

Authigenic

Ferromanganese

Nodule (geology)

10.1029/2019jb018639

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Citations (18)

An In Situ Detection System for Obtaining IRM Acquisition Curves and Alternating Field Demagnetization Remanence Curves of Rocks

IEEE Transactions on Instrumentation and Measurement (2023)

Ruiqi Tang Jiansheng Xu Huafeng Qin Xuting Wang Shanshan Song

A correct understanding of the magnetic properties of rocks is essential to obtain reliable records of paleomagnetism and environmental magnetism. However, the original orientation of cores can be easily lost during drilling, which represents the main source of error when measuring the magnetic properties of rocks. In this study, we develop an in situ detection system to obtain isothermal remanent magnetization (IRM) acquisition curves and alternating field demagnetization (AFD) remanence curves of rocks. This system eliminates the need to collect cores and allows the rock to be magnetized, demagnetized, and measured in situ. This system uses a magnetic field generator to generate pulsed magnetic fields and alternating magnetic fields for in situ magnetization and demagnetization of rocks. The remanence data are collected using an anisotropic magnetoresistance magnetometer. To achieve remote control and real-time data transmission, the system’s corresponding host computer software is also configured. The system has high magnetization (0–1T, 8ms) and demagnetization (0–300mT, 62.5Hz) capabilities; additionally, the linearity and stability of the magnetometer are almost unaffected by strong magnetic fields. In this paper, the remanence inversion formula for the in situ detection system is given. When the rock is measured in situ and close to the bottom of the coil, the z-component of the flux density measured by the magnetometer can be used to calculate the rock’s remanence based on the inversion formula. Three cylindrical rock samples of the same material and different sizes were tested using the in situ detection system, and their corresponding IRM _B and AFD _B curves were obtained. The B _rc and saturation IRM parameters of the samples obtained by inversion are essentially the same as those measured using a vibration sample magnetometer. This system provides a new measurement method for the detection of remanence of rocks in the field and provides a strong foundation for future development of in situ measurement technology for the magnetic properties of seafloor rocks and sediments.

Rock magnetism

Fluxgate compass

Natural remanent magnetization

10.1109/tim.2023.3289558

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Biocompatibility of marine magnetotactic ovoid strain MO-1 for in vivo application

Journal of Oceanology and Limnology (2021)

Changyou Chen Pingping Wang Long‐Fei Wu Tao Song

Magnetotactic Bacteria

Biocompatibility

Magnetosome

10.1007/s00343-021-0420-7

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Citations (5)