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129 results on '"Huo, Xiaolin"'

6. P2P Risk

Author

Qiu, Zhigang, Huo, Xiaolin, Dai, Yue, Qiu, Zhigang, Huo, Xiaolin, and Dai, Yue

Published
2022
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8. An Impedance Model of the High-Density Cultured Cells in a Bioreactor and the Cellular Impedance Detection Method

Author

Wu, Changzhe, Zhang, Guanghao, Zhang, Cheng, Huo, Xiaolin, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Liang, Xidong, editor, Li, Yaohua, editor, He, Jinghan, editor, and Yang, Qingxin, editor

Published
2022
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9. Electric Field Calculation of Transcranial Magnetic Stimulation After Epilepsy Surgery

Author

Wang, Jiahao, Huo, Xiaolin, Li, Siran, Wu, Nianshuang, Zhang, Cheng, Wu, Changzhe, Lin, Hua, Zhang, Guanghao, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, He, Jinghan, editor, Li, Yaohua, editor, Yang, Qingxin, editor, and Liang, Xidong, editor

Published
2022
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15. P2P Risk

Author

Qiu, Zhigang, primary, Huo, Xiaolin, additional, and Dai, Yue, additional

Published
2022
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18. Probe Design for Measurement and Verification of Electric Field Induced by Figure-8 Coil in Transcranial Magnetic Stimulation

Author

Wu, Nianshuang, Wu, Zhen, Zhang, Cheng, Wu, Changzhe, Huo, Xiaolin, and Zhang, Guanghao

Abstract

Transcranial magnetic stimulation (TMS) efficiency relies on the electric field (EF) delivered to the stimulation target. Due to lack of intracranial EF measurement methods, the induced EF is often calculated using simulation models. However, the difference between simulation and practice is still unknown. Our objective is to provide a novel and feasible method of measuring induced EF in the air domain and verify the consistency between simulation and measurement. Coil voltage inside the stimulator was measured to derive the ratio of coil voltage to coil inductance, representing the current change rate (di/dt). The calculated induced EF was obtained by multiplying di/dt values with magnetic vector potentials acquired through numerical and analytical calculations. A measurement probe based on concentric circular loops measured induced electromotive force (EMF) from a figure-8 coil, validating the presented method by comparing measurement and calculation results. Using this approach, we calculated and measured the spatial distribution of induced EF generated by a self-made figure-8 coil, demonstrating consistency with relative errors below 5% in the volume of interest (VOI). Spatial distributions of induced EF from a commercial figure-8 coil, identical in outer dimensions and turns to the self-made coil, were also measured, showing agreement despite differences in pulse widths and amplitudes. The presented measurement probe allows a feasible characterization of the TMS-induced EF. The measured values are consistent with calculated values. The proposed method may provide experimental data rather than coil geometry model for intracranial EF simulation software.

Published
2024
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19. Unpredicted costly dividends and temporary short squeezes.

Author

Huo, Xiaolin, Liu, Xin, Qiu, Zhigang, and Yang, Sijie

Subjects
SHORT squeeze, SHORT selling (Securities), DIVIDENDS, DIVIDEND yield, PRICE fluctuations, PRICES, SECURITIES trading
Abstract

We argue that cash dividend is a type of arbitraging cost that short sellers tend to avoid. We find that dividend announcements lead to temporary short squeezes, causing the prices of highly shorted stocks to overshoot and fully revert over time. These stocks also experience excessive buy‐initiated trades and abnormal trading volume in response to dividend announcements. These results are driven mainly by stocks with unpredicted dividends, low lending fees, and high dividend yields. Overall, results suggest that news of a dividend distribution is magnified by short squeezes due to increased short costs and generates excessive nonfundamentals‐driven price fluctuations. [ABSTRACT FROM AUTHOR]

Published
2023
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22. The term structure of mutual fund herding.

Author

Huo, Xiaolin, Liu, Xin, and Zheng, Weinan

Subjects
TREASURY bills, INVESTORS
Abstract

This paper investigates institutional herding behaviours in the U.S. Treasury market. We find that the level of herding is higher for bonds with a longer time to maturity and this pattern is significant only for buy herding, not sell herding. This term structure of herding is stronger for funds with a shorter investment horizon. These patterns remain strong for Treasury Inflation‐Protected Securities and for Treasuries with high coupon rates. Overall, our findings support investors' short‐termism as a channel for the term structure of herding and are inconsistent with other herding explanations, such as spurious herding, reputational concerns and information cascades. [ABSTRACT FROM AUTHOR]

Published
2023
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30. Rotating permanent magnetic fields exposure system for in vitro study

Author

Song, Tao, Wang, Zheng, Zhao, Dexi, Zhu, Qingzuo, Huo, Xiaolin, and Xiao, Liye

Subjects
Magnetic fields -- Analysis, Flux (Metallurgy) -- Analysis, Magnets, Permanent -- Testing, Business, Electronics, Electronics and electrical industries
Abstract

A permanent magnet of two layer magic rings driven by a motor is designed to produce a rotating magnetic field with tunable frequency a tunable magnetic flux density. In the design of a simple 3D computing method is adopted to do the optimization.

Published
2004

37. A model of injury potential for myelinated nerve fiber

Author

Zhang Guanghao, Huo Xiaolin, Zhang Cheng, Wu Chang-Zhe, and Wang Aihua

Subjects
Membrane potential, Materials science, Myelinated nerve fiber, Models, Neurological, Nerve injury, Nerve Fibers, Myelinated, Axons, Membrane Potentials, Amplitude, medicine.anatomical_structure, Potential difference, Time course, medicine, Animals, medicine.symptom, Axon, Neuroscience, Myelinated nerve, Myelin Sheath, Spinal Cord Injuries
Abstract

Excellent models have been described in literatures which related membrane potential to extracellular electric or magnetic stimulation and which described the formation and propagation of action potentials along the axon, for both myelinated and nonmyelinated fibers. There is not, however, an adequate model for nerve injury which allows to compute the distribution of injury potential, a direct current potential difference between intact and injured nerve, because its importance has been ignored in the shadow of the well-known action potential. This paper focus on the injury potential and presents a model of the electrical properties of myelinated nerve which describes the time course of events following injury. The time-varying current and potential at all nodes can be computed from the model, and the factors relate to the amplitude of injury potential can be determined. It is shown that the amplitude of injury potential decreased gradually with injury time, and the recession curve was exponential. Results also showed that the initial amplitude of injury potential is positively related to the grade of injury and fiber diameter. This model explained the mechanism of formation of injury potential and can provide instruction for applied electric field to prevent the formation injury potential.

Published
2016

38. Effects of Extremely Low-Frequency-Pulsed Electromagnetic Field on Different-Derived Osteoblast-Like Cells

Author

Song Tao, Huo Xiaolin, and Yang Wei

Subjects
Osteoblasts, Cell growth, Chemistry, Cellular differentiation, Skull, Cell, Biophysics, Medicine (miscellaneous), Cell Differentiation, Osteoblast, General Medicine, Cell cycle, Molecular biology, Cell Line, Mice, Electromagnetic Fields, medicine.anatomical_structure, Cell culture, Immunology, medicine, Animals, Alkaline phosphatase, Intracellular, Cell Proliferation
Abstract

The aim of this study is to investigate the effects of extremely low-frequency pulsed electromagnetic field (PEMF) on osteoblast-like cells. PEMF with a magnetic flux density of 1.55 mT at 48 Hz was employed to stimulate the MC3T3-E1 cell and the primary osteoblast cell derived from 2-day-old Sprague Dawley (SD) rat calvaria for different time. MTS method was applied to analyze cell proliferation and flow cytometry to detect cell cycle. The intracellular alkaline phosphatase (ALP) activity was measured by colorimetry. Our results demonstrated that PEMF of 1.55 mT at 48 Hz did not affect cell number of MC3T3-E1 cell, whereas the cell percentage of S and G(2)M phase decreased significantly. Although the cell number of the primary osteoblast cell did not alter by MTS assay after being exposed to PEMF for 24 h continuously, the cell percentage of S and G(2)M phase increased significantly. When culture time extended to 48 h, the cell number increased greatly and the cell percentage of S and G(2)M phase decreased significantly despite of the exposure type. After the primary osteoblast cell was exposed to PEMF for 24 h continuously, the ALP activity decreased significantly, whereas it increased significantly when being exposed to PEMF for 48 h continuously. From the results we concluded that PEMF of 1.55 mT at 48 Hz did not affect proliferation and differentiation of MC3T3-E1 cell, but it promoted proliferation, inhibited differentiation at proliferation stage, and promoted differentiation at differentiation stage of primary osteoblast cells.

Published
2008

45. The effects of chronic repetitive transcranial magnetic stimulation on glutamate and gamma-aminobutyric acid in rat brain

Author

Huo Xiaolin, Li Yue, and Song Tao

Subjects
Male, medicine.medical_specialty, medicine.medical_treatment, Hypothalamus, Hippocampus, Glutamic Acid, Stimulation, behavioral disciplines and activities, gamma-Aminobutyric acid, Rats, Sprague-Dawley, chemistry.chemical_compound, Random Allocation, Dopamine, Mesencephalon, Internal medicine, medicine, Animals, Neurotransmitter, Molecular Biology, Chromatography, High Pressure Liquid, gamma-Aminobutyric Acid, General Neuroscience, Glutamate receptor, Transcranial Magnetic Stimulation, Corpus Striatum, Transcranial magnetic stimulation, Endocrinology, nervous system, chemistry, Amino acid neurotransmitter, Neurology (clinical), Developmental Biology, medicine.drug
Abstract

Recent studies have shown that repetitive transcranial magnetic stimulation (rTMS) has therapeutic potential for some neurological and psychiatric disorders. However, the neurobiological effects of this tool are not sufficiently explained so far, previous research reported that rTMS can change dopamine release, there have been few studies to examine a possible effect of rTMS on amino acid neurotransmitter. This study aimed to determine the effects of chronic rTMS on glutamate and gamma-aminobutyric acid concentration in the rat brain. Sprague–Dawley rat was subject to 500 pulses of 0.5 Hz rTMS for 15 days, or sham stimulation. After last stimulation, glutamate and gamma-aminobutyric acid content were measured by high performance liquid chromatography (HPLC). Results showed that the content of glutamate and gamma-aminobutyric acid increased significantly in hippocampus and striatum after chronic rTMS, but reduced significantly in the hypothalamus. These results indicate that chronic rTMS has a modulatory effect on the glutamate and gamma-aminobutyric acid systems. This change in amino acid neurotransmitter may contribute to its beneficial effects.

Published
2008

46. Influence of low-frequency rTMS on EEG of epileptic rats

Author

Zhang Guanghao, Song Tao, Huo Xiaolin, and Li Linxia

Subjects
medicine.diagnostic_test, musculoskeletal, neural, and ocular physiology, Relative power, Stimulation, Low frequency, Absolute power, Electroencephalography, medicine.disease, behavioral disciplines and activities, Epilepsy, nervous system, Anesthesia, mental disorders, medicine, Pentylenetetrazol, Psychology, Gamma band, psychological phenomena and processes, medicine.drug
Abstract

The present research was to study the influence of low-frequency rTMS on epilepsy by EEG analysis. A train of 100, 0.5 Hz rTMS was applied on 15 Sprague-Dawley rats, and sham stimulation was also applied. EEG was recorded before stimulation and within 1 minute after rTMS and sham stimulation. Results showed that mean absolute power (MAP) of gamma band and relative power (RP) of beta and gamma band decreased significantly after low-frequency rTMS. In another experiment, pentylenetetrazol was injected immediately after 100 impulses of 0.5 Hz rTMS. Results showed that seizure susceptibility decreased greatly. These results indicate that low-frequency rTMS has certain suppressive effects on epilepsy due to power spectrum reduction.

Published
2007

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