首页 > 最新文献

Journal of Magnetics最新文献

英文 中文
Four Stage Induction Coilgun System Design and Analytical Calculation of Electromagnetic Expansion Force on the Stator Coil in the System 四级感应线圈枪系统设计及定子线圈电磁力的解析计算
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.309
Hui Min Kim, Yong-Kyu Lee, Meung Geun Song
The solenoid coil is one of the most important design component for electromagnetic induction type coil gun system. When the voltage and current are applied across the coil, a uniform magnetic field is generated inside the coil and that is proportional to the number of coil windings, and the high-density magnetic field generated by the coil can be converted to mechanical energy by applying the strong electromagnetic force to a ferromagnetic material. At this time, the interaction between the current and magnetic field of the solenoid coil generates a strong electromagnetic expansive force between each coil wire. In this paper, we introduced a four-stage induction coil gun as the launcher system using high voltage pulsed power source. Also, we proposed both the method and formula to calculate the electromagnetic expansion force acting on the multi-winding layer solenoid coil gun by using energy transfer equations. When the current flows a solenoid coil, the expansion force is generated in the radial direction of the coil. The mathematical calculation results were verified by simulated ones.
电磁线圈是电磁感应式线圈炮系统最重要的设计部件之一。当电压和电流在线圈上施加时,线圈内部产生均匀的磁场,磁场与线圈的绕组数成正比,并且通过将强电磁力施加到铁磁性材料上,线圈产生的高密度磁场可以转换为机械能。此时,电磁线圈的电流与磁场相互作用,在各线圈导线之间产生强大的电磁膨胀力。本文介绍了一种采用高压脉冲电源的四级感应线圈炮作为发射系统。同时,提出了用能量传递方程计算多绕组层电磁线圈枪的电磁膨胀力的方法和公式。当电流流过电磁线圈时,膨胀力在线圈的径向上产生。仿真结果验证了数学计算结果。
{"title":"Four Stage Induction Coilgun System Design and Analytical Calculation of Electromagnetic Expansion Force on the Stator Coil in the System","authors":"Hui Min Kim, Yong-Kyu Lee, Meung Geun Song","doi":"10.4283/jmag.2023.28.3.309","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.309","url":null,"abstract":"The solenoid coil is one of the most important design component for electromagnetic induction type coil gun system. When the voltage and current are applied across the coil, a uniform magnetic field is generated inside the coil and that is proportional to the number of coil windings, and the high-density magnetic field generated by the coil can be converted to mechanical energy by applying the strong electromagnetic force to a ferromagnetic material. At this time, the interaction between the current and magnetic field of the solenoid coil generates a strong electromagnetic expansive force between each coil wire. In this paper, we introduced a four-stage induction coil gun as the launcher system using high voltage pulsed power source. Also, we proposed both the method and formula to calculate the electromagnetic expansion force acting on the multi-winding layer solenoid coil gun by using energy transfer equations. When the current flows a solenoid coil, the expansion force is generated in the radial direction of the coil. The mathematical calculation results were verified by simulated ones.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135040962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thickness Dependence of Creep-Scaling behavior in Pt/Co Single Interface Films Pt/Co单界面薄膜蠕变结垢行为的厚度依赖性
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.227
Ji-Sung Yu, Seong-Hyub Lee, Minhwan Kim, Jiho Shin, Wooyoung Shim, Sug-Bong Choe
{"title":"Thickness Dependence of Creep-Scaling behavior in Pt/Co Single Interface Films","authors":"Ji-Sung Yu, Seong-Hyub Lee, Minhwan Kim, Jiho Shin, Wooyoung Shim, Sug-Bong Choe","doi":"10.4283/jmag.2023.28.3.227","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.227","url":null,"abstract":"","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135040978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Heat-treatment Temperature on the Formation of ε-Fe<SUB>2</SUB>O<SUB>3</SUB> Nanoparticles Encapsulated by SiO<SUB>2</SUB> 热处理温度对ε-Fe&lt;SUB&gt;2&lt;/SUB&gt; 0 &lt;SUB&gt;3&lt;/SUB&gt形成的影响SiO&lt;SUB&gt;2&lt;/SUB&gt;
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.239
Trinh Nguyen Thi, Phuoc Cao Van, Kirakosyan Artavazd, Chanyong Hwang, Jihoon Choi, Hyojin Kim, Jong-Ryul Jeong
ε-FeSUB2/SUBOSUB3/SUB has received attention with particular interest because of its large coercive field at room temperature, high-frequency millimeter-wave absorption, and the coupling of its magnetic and dielectric properties. This work investigated the effect of heat treatment on the formation of ε-FeSUB2/SUBOSUB3/SUB/SiOSUB2/SUB composites fabricated using reverse-micelle and sol-gel methods. The heating process was performed at various temperatures to figure out the optimal conditions for acquisition of the ε-FeSUB2/SUBOSUB3/SUB phase, which exhibits the largest coercive field among the Fe oxides. The sample treated at 1,075 °C had the highest percentage of ε-FeSUB2/SUBOSUB3/SUB phase, with a coercivity (HC) of 21.57 kOe measured at room temperature that reached a maximum of 23.7 kOe at 230 K. The measurement of the magnetization-temperature (M-T) curve for this sample also reveals the characteristic magnetic transition associated with ε-FeSUB2/SUBOSUB3/SUB within the temperature range of 40-150 K. The crystal structure of ε-FeSUB2/SUBOSUB3/SUB was confirmed using X-ray powder diffraction. Transmission electron micrographs revealed a broad size distribution of iron oxide nanoparticles ranging from 12 to 22 nm. The findings indicate that ε-FeSUB2/SUBOSUB3/SUB is a promising candidate with high electromagnetic-wave absorption capacity that is appropriate for high-speed wireless communication applications.
由于ε-FeSUB2/SUBOSUB3/SUB具有较大的室温强压场、高频毫米波吸收以及磁介电耦合特性,因此受到了广泛的关注。研究了热处理对反胶束法和溶胶-凝胶法制备ε-FeSUB2/ subbosub3 /SUB/SiOSUB2/SUB复合材料形成的影响。在不同的温度下进行加热,以确定获得具有最大矫顽力场的ε-FeSUB2/ subbosub3 /SUB相的最佳条件。在1075℃处理的样品中,ε-FeSUB2/ subbosub3 /SUB相的比例最高,在室温下测得的矫顽力(HC)为21.57 kOe,在230 K时达到最大值23.7 kOe。样品的磁化温度(M-T)曲线的测量也揭示了ε-FeSUB2/ subbosub3 /SUB在40- 150k范围内的特征磁跃迁。用x射线粉末衍射证实了ε-FeSUB2/ subbosub3 /SUB的晶体结构。透射电子显微镜显示氧化铁纳米颗粒的广泛尺寸分布在12至22 nm之间。结果表明,ε-FeSUB2/ subbosub3 /SUB具有较高的电磁波吸收能力,适合高速无线通信应用。
{"title":"Effect of Heat-treatment Temperature on the Formation of ε-Fe&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;3&lt;/SUB&gt; Nanoparticles Encapsulated by SiO&lt;SUB&gt;2&lt;/SUB&gt;","authors":"Trinh Nguyen Thi, Phuoc Cao Van, Kirakosyan Artavazd, Chanyong Hwang, Jihoon Choi, Hyojin Kim, Jong-Ryul Jeong","doi":"10.4283/jmag.2023.28.3.239","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.239","url":null,"abstract":"ε-FeSUB2/SUBOSUB3/SUB has received attention with particular interest because of its large coercive field at room temperature, high-frequency millimeter-wave absorption, and the coupling of its magnetic and dielectric properties. This work investigated the effect of heat treatment on the formation of ε-FeSUB2/SUBOSUB3/SUB/SiOSUB2/SUB composites fabricated using reverse-micelle and sol-gel methods. The heating process was performed at various temperatures to figure out the optimal conditions for acquisition of the ε-FeSUB2/SUBOSUB3/SUB phase, which exhibits the largest coercive field among the Fe oxides. The sample treated at 1,075 °C had the highest percentage of ε-FeSUB2/SUBOSUB3/SUB phase, with a coercivity (HC) of 21.57 kOe measured at room temperature that reached a maximum of 23.7 kOe at 230 K. The measurement of the magnetization-temperature (M-T) curve for this sample also reveals the characteristic magnetic transition associated with ε-FeSUB2/SUBOSUB3/SUB within the temperature range of 40-150 K. The crystal structure of ε-FeSUB2/SUBOSUB3/SUB was confirmed using X-ray powder diffraction. Transmission electron micrographs revealed a broad size distribution of iron oxide nanoparticles ranging from 12 to 22 nm. The findings indicate that ε-FeSUB2/SUBOSUB3/SUB is a promising candidate with high electromagnetic-wave absorption capacity that is appropriate for high-speed wireless communication applications.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Co Doping on the Elastocaloric Effect of Ni-Mn-Ga-Co Alloy Co掺杂对Ni-Mn-Ga-Co合金弹性热效应的影响
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.299
Haixu Qin, Youping Zheng, Liu Yang, Sibo Sun, Zhiyong Gao
Large latent heat is produced in the stress-induced martensitic phase transition process of Ni-Mn-Ca-based materials, i.e., elastocaloric effect. That makes such materials show tremendous potential for solid-state refrigeration which is identified as one of the most promising non-vapor-compression cooling devices. However, the still low refrigeration ability of these materials restricts further commercially promoting of solid-state refrigeration. In this work, we adjusted the Co content to regulate the elastocaloric effect for the NiSUB51.5/SUBMnSUB25/SUBGaSUB23/SUBCoSUB0.5./SUB According to the results, the transformation strain and ratio of loading stress/transformation temperature (dσ/dT) were increased by replacing the Ni atoms with a little more Co, leading to an improvement of the stressinduced transformation entropy-change ΔSσ. As a result, a huge ΔSσ of 45.0 JKgSUP-1/SUPKSUP-1/SUP is achieved in NiSUB50/SUBMnSUB25/SUB-GaSUB23/SUBCoSUB1/SUB alloy.
ni - mn - ca基材料在应力诱导马氏体相变过程中产生较大的潜热,即弹性热效应。这使得这种材料在固态制冷方面显示出巨大的潜力,固态制冷被认为是最有前途的非蒸汽压缩冷却装置之一。然而,这些材料的制冷能力仍然较低,限制了固态制冷的进一步商业化推广。在这项工作中,我们通过调整Co含量来调节NiSUB51.5/SUBMnSUB25/SUBGaSUB23/SUBCoSUB0.5的弹性热效应。结果表明,用少量Co取代Ni原子提高了合金的转变应变和加载应力/转变温度之比(dσ/dT),从而改善了合金的应力诱导转变熵变ΔSσ。因此,在NiSUB50/SUBMnSUB25/SUB- gasub23 /SUBCoSUB1/SUB合金中实现了45.0 JKgSUP-1/SUPKSUP-1/SUP的巨大ΔSσ。
{"title":"Effect of Co Doping on the Elastocaloric Effect of Ni-Mn-Ga-Co Alloy","authors":"Haixu Qin, Youping Zheng, Liu Yang, Sibo Sun, Zhiyong Gao","doi":"10.4283/jmag.2023.28.3.299","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.299","url":null,"abstract":"Large latent heat is produced in the stress-induced martensitic phase transition process of Ni-Mn-Ca-based materials, i.e., elastocaloric effect. That makes such materials show tremendous potential for solid-state refrigeration which is identified as one of the most promising non-vapor-compression cooling devices. However, the still low refrigeration ability of these materials restricts further commercially promoting of solid-state refrigeration. In this work, we adjusted the Co content to regulate the elastocaloric effect for the NiSUB51.5/SUBMnSUB25/SUBGaSUB23/SUBCoSUB0.5./SUB According to the results, the transformation strain and ratio of loading stress/transformation temperature (dσ/dT) were increased by replacing the Ni atoms with a little more Co, leading to an improvement of the stressinduced transformation entropy-change ΔSσ. As a result, a huge ΔSσ of 45.0 JKgSUP-1/SUPKSUP-1/SUP is achieved in NiSUB50/SUBMnSUB25/SUB-GaSUB23/SUBCoSUB1/SUB alloy.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and Optimization of an Improved T-shape Linear Permanent Magnet Machines 一种改进型t型直线永磁电机的设计与优化
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.268
Rong Guo, Wei He
This paper presents an improved T-shape linear permanent magnet machine (T-LPMM) based on a traditional surface-mounted linear permanent magnet machine (SM-LPMM). The proposed topological structure aims to protect the surface of the permanent magnet from corrosion and enhance the rigidity against make highfrequency vibration. Firstly, the slotless magnetic field is predicted using finite-element method (FEM) with automatic scripting in MATLAB to consider the inset T-shape structure of PM. Then, the Schwarz-Christoffel (SC) mapping is adopted to calculate the slot effect. Afterward, a subdomain (SD) model is established to analyze the armature reaction, and Taguchi method is employed for optimization purposes. The optimized result is verified by FEM, and a comparison experiment is conducted between T-LPMM and SM-LPMM. The experimental demonstrate superior electromagnetic output performance of the proposed T-LPMM.
本文在传统表面贴装式直线永磁电机(SM-LPMM)的基础上,提出了一种改进的t型直线永磁电机(T-LPMM)。所提出的拓扑结构旨在保护永磁体表面免受腐蚀,并提高其抗高频振动的刚度。首先,考虑插入式t形结构,在MATLAB中采用自动脚本的有限元法对无槽磁场进行预测;然后,采用Schwarz-Christoffel (SC)映射计算槽效应。然后,建立子域(SD)模型分析电枢反应,并采用田口法进行优化。通过有限元分析对优化结果进行了验证,并与T-LPMM和SM-LPMM进行了对比试验。实验证明了所提出的T-LPMM具有优异的电磁输出性能。
{"title":"Design and Optimization of an Improved T-shape Linear Permanent Magnet Machines","authors":"Rong Guo, Wei He","doi":"10.4283/jmag.2023.28.3.268","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.268","url":null,"abstract":"This paper presents an improved T-shape linear permanent magnet machine (T-LPMM) based on a traditional surface-mounted linear permanent magnet machine (SM-LPMM). The proposed topological structure aims to protect the surface of the permanent magnet from corrosion and enhance the rigidity against make highfrequency vibration. Firstly, the slotless magnetic field is predicted using finite-element method (FEM) with automatic scripting in MATLAB to consider the inset T-shape structure of PM. Then, the Schwarz-Christoffel (SC) mapping is adopted to calculate the slot effect. Afterward, a subdomain (SD) model is established to analyze the armature reaction, and Taguchi method is employed for optimization purposes. The optimized result is verified by FEM, and a comparison experiment is conducted between T-LPMM and SM-LPMM. The experimental demonstrate superior electromagnetic output performance of the proposed T-LPMM.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Magnetic Properties of SrRuO<SUB>3</SUB> Epitaxial Thin Film Grown on KTaO<SUB>3</SUB> (001) Substrate SrRuO&lt;SUB&gt;3&lt;/SUB&gt;在KTaO&lt;SUB&gt;3&lt;/SUB&gt上生长外延薄膜(001)衬底
4区 材料科学 Q4 Engineering Pub Date : 2023-09-30 DOI: 10.4283/jmag.2023.28.3.230
Chang-Uk Jung
We investigated the magnetic properties of SrRuOSUB3/SUB epitaxial thin film synthesized by using pulsed laser deposition on KTaOSUB3/SUB (001) substrate. X-ray reciprocal space mapping scans showed clear peaks demonstrating high quality, tensile strain with increased unitcell volume, and relaxed growth behavior. Magnetization data shows that the magnetization of the SrRuOSUB3/SUB film with magnetic field along the in-plane direction was larger than one with magnetic field along surface-normal direction.
研究了脉冲激光沉积在KTaOSUB3/SUB(001)衬底上制备的SrRuOSUB3/SUB外延薄膜的磁性能。x射线互反空间映射扫描显示清晰的峰,显示高质量,拉伸应变增加的单位细胞体积和松弛的生长行为。磁化数据表明,SrRuOSUB3/SUB薄膜在面内方向磁场作用下的磁化强度大于表面法向磁场作用下的磁化强度。
{"title":"Magnetic Properties of SrRuO&lt;SUB&gt;3&lt;/SUB&gt; Epitaxial Thin Film Grown on KTaO&lt;SUB&gt;3&lt;/SUB&gt; (001) Substrate","authors":"Chang-Uk Jung","doi":"10.4283/jmag.2023.28.3.230","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.3.230","url":null,"abstract":"We investigated the magnetic properties of SrRuOSUB3/SUB epitaxial thin film synthesized by using pulsed laser deposition on KTaOSUB3/SUB (001) substrate. X-ray reciprocal space mapping scans showed clear peaks demonstrating high quality, tensile strain with increased unitcell volume, and relaxed growth behavior. Magnetization data shows that the magnetization of the SrRuOSUB3/SUB film with magnetic field along the in-plane direction was larger than one with magnetic field along surface-normal direction.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design Analysis of Amended PIFA with Ferrite Sheet Attachment for SAR Reduction in Human Head 带有铁氧体片附件的改进PIFA用于人体头部SAR降低的设计分析
IF 0.5 4区 材料科学 Q4 Engineering Pub Date : 2023-06-30 DOI: 10.4283/jmag.2023.28.2.91
P. Kumar, Ch.R. Phani Kumar
{"title":"Design Analysis of Amended PIFA with Ferrite Sheet Attachment for SAR Reduction in Human Head","authors":"P. Kumar, Ch.R. Phani Kumar","doi":"10.4283/jmag.2023.28.2.91","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.2.91","url":null,"abstract":"","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85668406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Quantitative Experimental Phantom Study Based on Abdominal MR Contrast Media Using Deep Learning 基于腹部MR造影剂的深度学习定量实验幻像研究
IF 0.5 4区 材料科学 Q4 Engineering Pub Date : 2023-06-30 DOI: 10.4283/jmag.2023.28.2.194
D. Kweon
This study provides data for the development of oral contrast media for abdominal magnetic resonance imaging (MRI) examinations for potential use in clinical practice. The signal intensities, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were quantified using various contrast media with longitudinal (T1) and transverse relaxation (T2) pulse sequences. Prediction accuracy error comparisons were conducted according to the mean-squared, mean-absolute, and root-mean-squared errors of the contrast media intensities using the Orange data mining software. The signal strength and SNR were higher in canola oil and pineapple juice (T1-weighted images), while the intensities of blueberry juice and apple juice were high in the T2-weighted images; SNR was high in blueberry and cranberry juice, and CNR was high in Solotop ® and blueberry syrup. The accuracy of the deep-learning prediction errors of MR signal intensities was high. In conclusion, data from ex vivo MRI research can be used for the development of oral contrast media.
本研究为开发用于腹部磁共振成像(MRI)检查的口服造影剂提供了数据,以用于临床实践。采用纵向(T1)和横向弛豫(T2)脉冲序列对不同造影剂的信号强度、信噪比(SNR)和对比噪声比(CNR)进行量化。利用Orange数据挖掘软件对对比介质强度的均方误差、均绝对误差和均方根误差进行预测精度误差比较。菜籽油和菠萝汁在t1加权图像中信号强度和信噪比较高,而蓝莓汁和苹果汁在t2加权图像中信号强度较高;蓝莓和蔓越莓汁的SNR较高,而Solotop®和蓝莓糖浆的CNR较高。对磁共振信号强度的深度学习预测误差精度较高。综上所述,体外MRI研究的数据可用于口腔造影剂的开发。
{"title":"Quantitative Experimental Phantom Study Based on Abdominal MR Contrast Media Using Deep Learning","authors":"D. Kweon","doi":"10.4283/jmag.2023.28.2.194","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.2.194","url":null,"abstract":"This study provides data for the development of oral contrast media for abdominal magnetic resonance imaging (MRI) examinations for potential use in clinical practice. The signal intensities, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) were quantified using various contrast media with longitudinal (T1) and transverse relaxation (T2) pulse sequences. Prediction accuracy error comparisons were conducted according to the mean-squared, mean-absolute, and root-mean-squared errors of the contrast media intensities using the Orange data mining software. The signal strength and SNR were higher in canola oil and pineapple juice (T1-weighted images), while the intensities of blueberry juice and apple juice were high in the T2-weighted images; SNR was high in blueberry and cranberry juice, and CNR was high in Solotop ® and blueberry syrup. The accuracy of the deep-learning prediction errors of MR signal intensities was high. In conclusion, data from ex vivo MRI research can be used for the development of oral contrast media.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89723384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Numerical Analysis and Experimental Study of Symmetric Stepped Magnetic Fluid Seal with Three Magnetic Sources 三磁源对称阶梯式磁流体密封的数值分析与实验研究
IF 0.5 4区 材料科学 Q4 Engineering Pub Date : 2023-06-30 DOI: 10.4283/jmag.2023.28.2.162
Fuxiang Hao, A. Mu
{"title":"Numerical Analysis and Experimental Study of Symmetric Stepped Magnetic Fluid Seal with Three Magnetic Sources","authors":"Fuxiang Hao, A. Mu","doi":"10.4283/jmag.2023.28.2.162","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.2.162","url":null,"abstract":"","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85490810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Research on Magnetic Actuation Mechanism and Kinematics of Soft Inspection Robot for HVDC Transmission Line 高压直流输电线路软巡检机器人磁驱动机构及运动学研究
IF 0.5 4区 材料科学 Q4 Engineering Pub Date : 2023-06-30 DOI: 10.4283/jmag.2023.28.2.108
Xianjin Xu, Yanhao Huang, Lanlan Liu, Yu Yan, Haifeng Yan, Yuhang Yang
Currently, most of the inspection robots for high-voltage transmission lines, both at home and abroad, utilize a multi-cantilever rigid structure. However, the inefficiency and poor safety of these robots when it comes to crossing obstacles make them impractical. To address this issue, a magnetically actuated soft inspection robot has been developed. This robot uses the amperage force applied to the current-carrying coil in a HVDC toroidal magnetic field to efficiently and flexibly cross multiple obstacles in an inchworm-like motion. The focus of this paper is on the design and theoretical calculation of the magnetically actuated model, specifically the magnetic linear traction force and magnetic adsorption force (diastolic force), required to enable the soft robot to crawl. Through simulation and kinematic analysis, the results show that the magnetically actuated soft robot design proposed in this paper is theoretically feasible, providing a foundation for future developments in magnetically actuated soft robots.
目前,国内外高压输电线路巡检机器人大多采用多悬臂刚性结构。然而,这些机器人在跨越障碍时效率低下,安全性差,这使得它们不切实际。为解决这一问题,研制了一种磁驱动软检测机器人。该机器人利用施加在高压直流环形磁场中的载流线圈上的安培力,以一英寸蠕虫般的运动高效灵活地跨越多个障碍物。本文的重点是磁致动模型的设计和理论计算,具体来说是磁线性牵引力和磁吸附力(舒张力),使软机器人能够爬行。通过仿真和运动学分析,结果表明本文提出的磁驱动软机器人设计在理论上是可行的,为今后磁驱动软机器人的发展奠定了基础。
{"title":"Research on Magnetic Actuation Mechanism and Kinematics of Soft Inspection Robot for HVDC Transmission Line","authors":"Xianjin Xu, Yanhao Huang, Lanlan Liu, Yu Yan, Haifeng Yan, Yuhang Yang","doi":"10.4283/jmag.2023.28.2.108","DOIUrl":"https://doi.org/10.4283/jmag.2023.28.2.108","url":null,"abstract":"Currently, most of the inspection robots for high-voltage transmission lines, both at home and abroad, utilize a multi-cantilever rigid structure. However, the inefficiency and poor safety of these robots when it comes to crossing obstacles make them impractical. To address this issue, a magnetically actuated soft inspection robot has been developed. This robot uses the amperage force applied to the current-carrying coil in a HVDC toroidal magnetic field to efficiently and flexibly cross multiple obstacles in an inchworm-like motion. The focus of this paper is on the design and theoretical calculation of the magnetically actuated model, specifically the magnetic linear traction force and magnetic adsorption force (diastolic force), required to enable the soft robot to crawl. Through simulation and kinematic analysis, the results show that the magnetically actuated soft robot design proposed in this paper is theoretically feasible, providing a foundation for future developments in magnetically actuated soft robots.","PeriodicalId":16147,"journal":{"name":"Journal of Magnetics","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88273156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Journal of Magnetics
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1