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Application of Transcranial Magnetic Stimulation Technology in the Management of Motor Symptoms of Parkinson’s Disease
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作者 Chengming Wang 《Journal of Clinical and Nursing Research》 2025年第5期284-290,共7页
Objective:To study the effect of transcranial magnetic stimulation(TMS)on improving motor symptoms in patients with Parkinson’s disease(PD).Methods:60 PD patients who visited the hospital from September 2023 to Augus... Objective:To study the effect of transcranial magnetic stimulation(TMS)on improving motor symptoms in patients with Parkinson’s disease(PD).Methods:60 PD patients who visited the hospital from September 2023 to August 2024 were selected as samples and randomly divided into two groups.Group A received conventional medication plus TMS treatment,while Group B received medication only.The efficacy of motor function improvement,neurological symptoms,mental state,sleep quality,quality of life,and adverse reactions was compared between the two groups.Results:The efficacy of Group A was higher than that of Group B(P<0.05).The scores of the Scales for Outcomes in Parkinson’s Disease-Autonomic(SCOPA-AUT),Mini-Mental State Examination(MMSE),and Pittsburgh Sleep Quality Index(PSQI)in Group A were lower than those in Group B(P<0.05).The quality of life scale(SF-36)score in Group A was higher than that in Group B(P<0.05).The adverse reaction rate in Group A was lower than that in Group B(P<0.05).Conclusion:TMS used in the treatment of PD patients can improve patients’mental state and motor function,optimize sleep quality and quality of life,and is safe and efficient. 展开更多
关键词 Parkinson’s disease Transcranial magnetic stimulation technology Motor symptom management
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Magnetic sensitivity technology based on microwave modulation of solid state spin system NV center 被引量:2
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作者 GAO Jian ZHAO Juan +4 位作者 MA Zong-min FU Yue-ping ZHANG Shao-wen LIN Zhao-dong SONG Jian 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2018年第2期188-193,共6页
In view of the low resolution and accuracy of traditional magnetometer,a method of microwave frequency modulation technology based on nitrogen-vacancy(NV)center in diamond for magnetic detection was proposed.The magne... In view of the low resolution and accuracy of traditional magnetometer,a method of microwave frequency modulation technology based on nitrogen-vacancy(NV)center in diamond for magnetic detection was proposed.The magnetometer studied can reduce the frequency noise of system and improve the magnetic sensitivity by microwave frequency modulation.Firstly,ESR spectra by sweeping the microwave frequency was obtained.Further,the microwave frequency modulated was gained through the mixed high-frequency sinusoidal modulation signal generated by signal generator.In addition,the frequency through the lock-in amplifier was locked,and the signal which was proportional to the first derivative of the spectrum was obtained.The experimental results show that the sensitivity of magnetic field detection can reach 17.628 nT/Hz based on microwave frequency modulation technology.The method realizes high resolution and sensitivity for magnetic field detection. 展开更多
关键词 solid state spin system nitrogen vacancy(NV)center microwave frequency modulation magnetic sensitivity technology lock-in amplifier
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The Tendency of the Market and Technology of the Magnetic Materials in Korea
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作者 C.O.Kim and Y.Li (Engineering College, Chungnam National University, Korea) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2000年第2期217-220,共4页
关键词 The Tendency of the Market and technology of the Magnetic Materials in Korea
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MAGNETIC TREATMENT TECHNOLOGY APPLIED TO OILFIELD PRACTICE
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作者 Geng Dianyu(Shenyang Institute of Metal Research, CAS) 《Bulletin of the Chinese Academy of Sciences》 1996年第1期33-34,共2页
Petroleum exploration is a strategic task for our country in its economic development.At present,petroleum production in most of east China’s oilfields is in the waning period after reaching a peak.To raise the oil r... Petroleum exploration is a strategic task for our country in its economic development.At present,petroleum production in most of east China’s oilfields is in the waning period after reaching a peak.To raise the oil recovery rate is a key measure for their production increase.Because of this,a major provision was included in the third cooperative protocol signed in 1986 by the 展开更多
关键词 MT MAGNETIC TREATMENT technology APPLIED TO OILFIELD PRACTICE THAN
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Design and mechanical optimization of multidirectional pressure-preserved coring system for deep-earth resource exploration
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作者 Guikang Liu Yachen Xie Cong Li 《International Journal of Mining Science and Technology》 2025年第5期719-735,共17页
Pressure-preserved coring technologies are critical for deep-earth resource exploration but are constrained by the inability to achieve multidirectional coring,restricting exploration range while escalating costs and ... Pressure-preserved coring technologies are critical for deep-earth resource exploration but are constrained by the inability to achieve multidirectional coring,restricting exploration range while escalating costs and environmental impacts.We developed a multidirectional pressure-preserved coring system based on magnetic control for deep-earth environments up to 5000 m.The system integrates a magnetically controlled method and key pressure-preserved components to ensure precise self-triggering and self-sealing.It is supported by geometric control equations for optimizing structural stability.Their structure was verified and optimized through theoretical and numerical calculations to meet design objectives.To clarify the self-triggering mechanism in complex environments,a dynamic interference model was established,verifying stability during multidirectional coring.The prototype was fabricated,and functional tests confirmed that it met its design objectives.In a 300-meter-deep test inclined well,10 coring operations were completed with a 100%pressure-preserved success rate,confirming the accuracy of the dynamic interference model analysis.Field trials in a 1970-meter-deep inclined petroleum well,representative of complex environments,demonstrated an in-situ pressure preservation efficiency of 92.18%at 22 MPa.This system innovatively expands the application scope of pressure-preserved coring,providing technical support for efficient and sustainable deep resources exploration and mining. 展开更多
关键词 Deep mining Environmentally and economically sustainable deep-earth resource exploration Multidirectional pressure-preserved coring system Magnetic control technology Dynamic interference model Field validation
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Design of LLC Magnetically Integrated Transformer based on Nanocrystalline Soft Magnetic Composite Leakage Core
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作者 Kaimeng Shi Dianhai Zhang +1 位作者 Xuanzhe Zhao Ziyan Ren 《CES Transactions on Electrical Machines and Systems》 2025年第4期454-462,共9页
Magnetic integration technology can reduce the printed circuit board(PCB) size of inductor-inductor-capacitor(LLC) converters. However, conventional methods for adjusting leakage inductance by modifying the transforme... Magnetic integration technology can reduce the printed circuit board(PCB) size of inductor-inductor-capacitor(LLC) converters. However, conventional methods for adjusting leakage inductance by modifying the transformer's air gap exhibit low sensitivity and limited output power capability. This paper proposes a novel magnetically integrated transformer structure that employs nanocrystalline soft magnetic composite(SMC) lamination to separate primary and secondary cores. Using SMC for the leakage core allows for more precise control of the magnetic flux division, enabling accurate leakage inductance tuning. Furthermore, this design achieves a higher magnetizing inductance per turn. Experimental results show that the proposed GU30 magnetically integrated transformer handles a primary input active power of 206.9 W, outperforming conventional designs while maintaining a full-load efficiency above 95%. This technology has the potential to further enhance the power density of power conversion products. 展开更多
关键词 Soft magnetic composite(SMC) Magnetic integration technology High frequency transformer LLC resonant converter
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Comparison between computed tomography and magnetic resonance imaging in clinical diagnosis and treatment of tibial platform fractures 被引量:2
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作者 Xin-Ding Liu Hai-Bo Wang +2 位作者 Tie-Cheng Zhang Yong Wan Chu-Zhen Zhang 《World Journal of Clinical Cases》 SCIE 2020年第18期4067-4074,共8页
BACKGROUND Tibial plateau fracture is one of the common fracture types.It occurs mainly in teenagers and is usually caused by a fall.After the occurrence of fracture,knee swelling,pain,limited activity,etc.greatly aff... BACKGROUND Tibial plateau fracture is one of the common fracture types.It occurs mainly in teenagers and is usually caused by a fall.After the occurrence of fracture,knee swelling,pain,limited activity,etc.greatly affect the patient’s exercise habits and lifestyle.X-ray,computed tomography(CT)and magnetic resonance imaging(MRI)were used in this examination.X-rays are relatively new and easy to operate.However,there are some errors in the observation of fracture collapse and fracture displacement.In recent years,CT and MRI have been actively used to diagnose various types of clinical fractures.They have more diagnostic power than X-ray film.However,some scholars believe that CT is also prone to errors in clinical application.The volume effect leads to missed diagnosis and misdiagnosis in some cases,while the multidirection scanning of MRI technology can effectively overcome the shortcomings of CT.To facilitate the selection of clinical examination regimens,this study further observed the diagnostic ability of these two regimens in the diagnosis of tibial plateau fractures.AIM To explore the value of nuclear MRI and CT in the clinical diagnosis of tibial plateau fractures.METHODS A total of 120 patients with tibial plateau fractures admitted from September 2017 to August 2019 were included.All patients were examined by nuclear MRI and CT scanning.The results were sent to senior physicians in our hospital to complete the diagnosis.RESULTS Nuclear magnetic resonance showed the same effects as CT in four aspects:fracture displacement,bone defect,fracture site and fracture comminution.There was no significant difference in the score data(P>0.05).Nuclear magnetic resonance and CT tended to be consistent in the B3,C2 and C3 fracture diagnosis coincidence rate,combined injury detection rate and fracture detection rate.The diagnostic coincidence rate of type B1,B2 and C1 fractures and the accuracy rate of overall fracture classification indicated that the MRI technique was significantly better than that of CT(P>0.05).CONCLUSION MRI and CT have good diagnostic typing in the diagnosis of tibial plateau fractures,but MRI is more accurate and may be preferred. 展开更多
关键词 Nuclear magnetic resonance technology Tibial plateau fracture Diagnostic compliance Comparative study Fracture classification Diagnostic compliance
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An iterative ITI cancellation method for multi-head multi-track bit-patterned magnetic recording systems
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作者 Santi Koonkamkhai Piya Kovintavewat 《Digital Communications and Networks》 SCIE CSCD 2021年第1期107-112,共6页
Bit-Pattemed Magnetic Recording(BPMR)is one of the emerging data storage technologies,which promises an Areal Density(AD)of about 4 Tb/in2.However,a major problem practically encountered in a BPMR system is Inter-Trac... Bit-Pattemed Magnetic Recording(BPMR)is one of the emerging data storage technologies,which promises an Areal Density(AD)of about 4 Tb/in2.However,a major problem practically encountered in a BPMR system is Inter-Track Interference(ITI)that can deteriorate the overall system performance,especially at high ADs.This paper proposes an iterative ITI cancellation method for an m-head m-track BPMR system,which uses m heads to read m adjacent tracks and decodes them simultaneously.To cancel the ITI,we subtract the weighted readback signals of adjacent tracks,acting as the ITI signals,from the readback signal of the target track,before passing the refined readback signal to a turbo decoder.Then,the decoded data will be employed to reconstruct the ITI signal for the next turbo iteration.Experimental results indicate that the proposed system performs better than the conventional system that uses one head to read one data track.Furthermore,we also find out that the proposed system is more robust to media noise and track misregistration than the conventional system. 展开更多
关键词 Emerging magnetic recording technology Multi-head multi-track Inter-track interference Turbo decoder
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Advances in Application of New Catalytic Materials in Petroleum Refining and Petrochemicals Production
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作者 He Yigong Lin Min +1 位作者 Mu Xuhong Shu Xingtian (SINOPEC Research Institute of Petroleum Processing, Beijing 100083) 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2006年第1期1-5,共5页
This article introduces the solid acid catalyst for isobutene/butylenes alkylation, the HTS Ti/Si zeolite for ammonoxidation of cyclohexanone and the noncrystalline alloy catalyst and magnetically stabi- lized bed for... This article introduces the solid acid catalyst for isobutene/butylenes alkylation, the HTS Ti/Si zeolite for ammonoxidation of cyclohexanone and the noncrystalline alloy catalyst and magnetically stabi- lized bed for hydrofining of caprolactam that were developed recently by SINOPEC Research Institute of Petroleum Processing (RIPP). 展开更多
关键词 CATALYST material solid acid non-crystalline alloy magnetically stabilized bed technology
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Mathematical model analysis of new-type magnetic integrated CRT considering magnetic leakage
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作者 WANG Tiange TIAN Mingxing ZHANG Huiying 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2022年第1期31-40,共10页
A novel magnetic integrated controllable reactor of transformer type(CRT)has the advantages of simple structure,flexible assembly,convenient maintenance and practicability.To analyze its operation characteristics accu... A novel magnetic integrated controllable reactor of transformer type(CRT)has the advantages of simple structure,flexible assembly,convenient maintenance and practicability.To analyze its operation characteristics accurately,we establish corresponding equivalent mathematical model considering magnetic leakage based on magnetic circuit and circuit dualistic transformation method.The distribution of magnetic leakage field of each winding is analyzed qualitatively,and the analytical calculation formulas of magnetizing inductance and leakage inductance of each winding are derived.Based on this,the analytical calculation formulas of short-circuit impedance and winding current of CRT under different working conditions are derived.The field-circuit coupling finite element model of the magnetic integrated CRT is established to simulate the current of each winding under different working conditions.The results show that the analytical calculation results of each winding current have good consistency with the finite element calculation results,indicating the validity of CRT equivalent mathematical model and correctness of the analytical formulas of leakage inductance,short-circuit impedance and winding current of CRT.The working winding current of CRT is increasing gradually with the operation of control winding in turn to realise the transition of CRT compensation capacity from zero to a rated value. 展开更多
关键词 controllable reactor of transformer type(CRT) magnetic integration technology equivalent mathematical model leakage inductance winding current
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Highly efficient energy harvest via external rotating magnetic field for oil based nanofluid direct absorption solar collector
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作者 Debing Wang Wenwen Liang +5 位作者 Zhiheng Zheng Peiyu Jia Yunrui Yan Huaqing Xie Lingling Wang Wei Yu 《Green Energy & Environment》 SCIE CSCD 2021年第2期298-307,共10页
Nanofluids based direct absorption solar collectors(DASCs) are considered as the important alternative for further improve the utilization of solar energy. However the low-quality energy and aggregation of nanoparticl... Nanofluids based direct absorption solar collectors(DASCs) are considered as the important alternative for further improve the utilization of solar energy. However the low-quality energy and aggregation of nanoparticles obstructs their large-scale application. In this work, a new method of using magnetic nanofluids in DASCs is proposed. By this method, not only high-quality energy is got as well as the problems of blockage and corrosion in heat exchanger are well avoided. The result shows that the maximum temperature can reach 98℃ under 3 solar irradiations and the photothermal conversion efficiency can be further increased by 12.8% when the concentration is 500 ppm after adding an external rotating magnetic field. The highest viscosity of working fluid reduced by 21% when the concentration is 500 ppm at 95℃ after separating the Fe_(3)O_(4)@C nanoparticles from the nanofluids via magnetic separation technology. Meanwhile, the obtained pure base liquids with high temperature flow to heat exchanger, which also reduces the flow resistance in pipeline and avoids the problems such as blockage and corrosion in heat exchanger. This research promotes a new way for the efficient utilization of solar energy. 展开更多
关键词 Direct absorption solar collector Magnetic Fe_(3)O_(4)@C-oil nanofluids Magnetic separation technology High-quality energy
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Classification of different walnut varieties using low-field nuclear magnetic resonance technology and cluster analysis 被引量:1
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作者 Ping Song He Gao +2 位作者 Baojun Zhao Aiguo Zhang Feng Liu 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2019年第6期116-121,共6页
To classify different walnut varieties based on water and oil content of walnut,and determine their storage conditions,the low-field nuclear magnetic resonance(LFNMR)technology was used to obtain the NMR transverse re... To classify different walnut varieties based on water and oil content of walnut,and determine their storage conditions,the low-field nuclear magnetic resonance(LFNMR)technology was used to obtain the NMR transverse relaxation time(T 2)of the samples based on the physical and chemical indicators of the walnut quality.The relationship between the relaxation time and phase state of the internal material of the sample was investigated,and the characteristic parameters of the NMR spectrum signals were statistically analyzed using cluster analysis to determine the different walnut varieties,and three different components,as well as their contents,were detected by a LFNMR spectrometer:firmly bound water,weakly bound water,and weakly bound oil.Test results indicated that the oil peak was dominant in the overall signal intensity compared to the water peaks,in which the firmly bound water phase contributed more to the overall water signal between the water peaks.Using the analytic hierarchy process of cluster analysis,21 walnut samples were classified into three different classes,based on the characteristic parameters of the water-content and oil-content spectrum signals.The first class contains four walnut varieties characterized by least water and highest oil contents;the third class contains two walnut varieties,with the highest water content and least oil content;whereas,the second class contains 15 walnut varieties,with both water and oil contents at medium levels.The results showed that LFNMR led to a rapid detection of moisture and oil contents in walnuts,while cluster analysis classified different walnuts varieties based on these parameters.This study also provided the basis for optimizing the storage methods and storage conditions of walnuts. 展开更多
关键词 low-field nuclear magnetic resonance technology transverse relaxation time WALNUT cluster analysis decay curves
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Launching Magnetic Medicinecharting the future of magnetic innovations in healthcare
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作者 Yi Lyu 《Magnetic Medicine》 2025年第1期1-2,共2页
We are delighted to introduce Magnetic Medicine,a new interdisciplinary platform dedicated to the scientific exploration and clinical application of magnetic technologies in healthcare.This journal meets a pressing ne... We are delighted to introduce Magnetic Medicine,a new interdisciplinary platform dedicated to the scientific exploration and clinical application of magnetic technologies in healthcare.This journal meets a pressing need for a focused forum that unites clinicians,engineers,biophysicists,and materials scientists with a shared goal:harnessing the remarkable properties of magnetism to drive medical progress. 展开更多
关键词 materials scientists healthcare remarkable properties magnetism medical progress scientific exploration magnetic technologies clinical application interdisciplinary platform
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