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Effect of Laser Annealing on Permeability spectra in co-based Amorphous Ribbon

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Journal of Materials science & Technology 2000年第2期16卷 141-142页

作者： K.J.Jang, s.J.Ahn and c.G.Kim (Department of Physics, sun Moon Univ., chung-nam, 336-840, Korea) s.s. Thoon (Department of Physics, Andong National Univ., Kyung-buk, 760-749, Korea) s.c.yu (Department of Physics, chungbuk National Univ., chung-buk, 361-7 Department of Physics Sun Moon Univ. Chung-nam 336-840 South Korea Department of Physics Andong National Univ. Kyung-buk 760-749 South Korea Department of Physics Chungbuk National Univ. Chung-buk 361-763 South Korea

We investigated the variation of permeability spectra and relaxation frequency in co-based amorphous ribbon annealed by pulsed Nd:YAG laser at various annealing energy Ea. The complex permeability spectra varies sensitively with the annealing energy, where the spectra could be decomposed into two contributions from domain wall motion,μdw(f) and rotational magnetization μrot(f) by analyzing the measured spectra as a function of driving ac field amplitude. The magnitude of μdw(f) and μrot(f) in dc limit shows maximum at Ea = 176 mJ. The maximum relaxation frequency for rotational magnetization, determined by μ'(f) curve, is about 700 kHz at Ea=62 mJ but that for wall motion is about 26 kHz at 230 mJ. These variations reflect the increase of magnetic softness and microstructural change by the annealing.

关键词： co Effect of Laser Annealing on Permeability spectra in co-based Amorphous Ribbon

钙钛矿La0.8ca0.2MnO3多晶样品的制备及低温磁学特性

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低温物理学报 2012年第4期34卷 302-305页

作者：姜炳植 s.G.Min s.c.yu K.W.Lee 延边大学理学院物理系 Advanced Materials Research Institute University of New Orleans Department of Physics Chungbuk National University Korea Research Institute of standard and science

我们利用固相反应法制备了粉末状La0.8ca0.2MnO3样品,其空间群为pnma,样品中存在超顺磁性粒子,其截止态和超顺磁态的转变温度为185K,从dσ/dT的负峰得到铁磁-顺磁相变居里温度为210K,在顺磁领域线性拟合而得到顺磁居里温度为216.4K,分... 详细信息

我们利用固相反应法制备了粉末状La0.8ca0.2MnO3样品,其空间群为pnma,样品中存在超顺磁性粒子,其截止态和超顺磁态的转变温度为185K,从dσ/dT的负峰得到铁磁-顺磁相变居里温度为210K,在顺磁领域线性拟合而得到顺磁居里温度为216.4K,分子式有效磁矩为6.25μB,低温领域磁化曲线服从布洛赫T32定律,其自旋波劲度系数为49.2meV2.

关键词：钙钛矿锰氧化物居里温度自旋波劲度系数

固相反应法制备的Gd0.7sr0.3MnO3粉末的磁学特性

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低温物理学报 2011年第5期33卷 386-389页

作者：金林虎 s.c.yu B.W.Lee J.Y.Kim 姜炳植延边大学理学院物理系 Department of Physics Chungbuk National University Department of Physics Hankuk University of Foreign Studies

利用固相反应法制备了用sr部分替换GdMnO3中Gd的锰基钙钛矿氧化物Gd0.7sr0.3MnO3.X射线衍射表明其晶体结构为正交晶系,空间群为Pnma.通过测量样品在零场冷却和加场冷却下的磁化强度及磁化率随温度的变化曲线,得出样品显示亚铁磁特性,Mn... 详细信息

利用固相反应法制备了用sr部分替换GdMnO3中Gd的锰基钙钛矿氧化物Gd0.7sr0.3MnO3.X射线衍射表明其晶体结构为正交晶系,空间群为Pnma.通过测量样品在零场冷却和加场冷却下的磁化强度及磁化率随温度的变化曲线,得出样品显示亚铁磁特性,Mn和Gd两个子晶格相互反平行.根据居里-外斯定律得知其居里温度为61 K,Mn原子轨道磁矩对总磁矩贡献大约为1.04μB.最大外加磁场为7000 Oe时负磁熵变从-0.26 J/Kg K连续变化到0.22 J/Kg K,在37 K附近磁熵变近似等于零.

关键词：钙钛矿锰氧化物亚铁磁性磁热效应

Enhancing visible-light-driven NO oxidation through molecular‐level insights of dye-loaded sea sands

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Rare Metals 2024年第2期43卷 543-554页

作者： yu-Han Li Bang-Fu chen sónia A.c.carabineiro You-yu Duan Ping Tan Wing-Kei Ho Fan Dong Engineering Research center for Waste Oil Recovery Technology and Equipment Ministry of EducationChongqing Key Laboratory of Catalysis and New Environmental MaterialsChongqing Technology and Business UniversityChongqing400067China Nanchang Institute of Technology Nanchang33044China LAQV-REQUIMTE Department of ChemistryNOVA School of Science and TechnologyUniversidade NOVA de Lisboa2829-516CaparicaPortugal college of Physics and center of Quantum Materials and Devices Chongqing UniversityChongqing401331China Department of science and Environmental studies The Education University of Hong KongHong Kong999077China

Natural minerals,abundant and easily obtained through simple physical processing,offer a cost-effective and environmentally friendly solution for dyeing wastewater disposal and air pollution *** study investigates the photocatalytic removal of NO using natural different types of dyes,loaded on natural sand,under visible light *** examining various coating concentrations of dyes and sand weights,we discovered that sand loaded with Rhodamine B(RhB)exhibits high activity for the photo-oxidation of NO.A combination results of X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPs),Fourier transform infrared spectroscopy(FTIR)and thermogravimetric(TG)analyses confirm the presence of siO_(2),cacO_(3),Al_(2)O_(3)and iron oxides as the main components of the ***,studying RhB-loaded individual components reveals that cacO_(3)plays a crucial role in enhancing the NO removal *** results and theoretical calculations demonstrate the establishment of a directional charge transfer channel from cacO_(3)to RhB,facilitating the adsorption and activation of molecular NO and O_(2).This work not only promotes the utilization of natural mineral resources but also enriches the fields of environmental photochemistry and semiconductor photocatalysis.

关键词： sand dyes Rhodamine B Photo-oxidation of NO Visible light illumination

^(4)He monolayer on graphene:a quantum Monte carlo study

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communications in Theoretical Physics 2024年第9期76卷 149-157页

作者： s yu M Boninsegni Department of Physics University of AlbertaEdmontonAlbertaT6G 2H5Canada

We revisit the problem of adsorption of a single^(4)He layer on graphene,focusing on the commensurate(c_(1/3))crystalline phase,specifically on whether it may possess a nonzero superfluid response,and on the existence of superfluid phases,either(metastable)liquid or vacancy-doped *** make use of canonical quantum Monte carlo simulations at zero and finite temperature,based on a realistic microscopic model of the *** results confirm the absence of any superfluid response in the commensurate crystal,and that no thermodynamically stable uniform phase exists at lower *** evidence of a possibly long-lived,metastable superfluid phase at c_(1/3)coverage is ***,the results of ground-state projection methods and finite-temperature simulations are entirely consistent.

关键词： superfluidity low-dimensional systems quantum Monte carlo helium supersolids

颅内动脉瘤管状栓塞装置的中期效果评价——对143例病人的178个动脉瘤的前瞻性研究

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国际医学放射学杂志 2013年第1期 78-79页

作者： s.c.yu c.Kwok P.cheng K.chan s.s.Lau W.Lui 范文骏 Department of Imaging and Interventional Radiology the Chinese University of Hong KongPrince of Wales Hospital30-32 Ngan Shing StreetRoom 2A0612/FNew Extension BlockShatinNew TerritoriesHong Kong

目的通过临床观察和血管造影评价颅内动脉瘤采用管状栓塞装置(PED)治疗后的中期效果。材料与方法本研究为多中心非随机前瞻性研究,获得所有参与单位伦理委员会的批准,所有病人均签署知情同意书。具有未破裂的囊状或梭形动脉瘤或治疗后... 详细信息

目的通过临床观察和血管造影评价颅内动脉瘤采用管状栓塞装置(PED)治疗后的中期效果。材料与方法本研究为多中心非随机前瞻性研究,获得所有参与单位伦理委员会的批准,所有病人均签署知情同意书。具有未破裂的囊状或梭形动脉瘤或治疗后动脉瘤复发的病人(143例病人的178个动脉瘤)纳入本研究,PED治疗后血管造影随访18个月以上,临床随访3年以上。研究终止条件包括:动脉瘤完全闭塞、术后30d至3年内出现神经系统并发症、PED治疗术后出现颅神经麻痹,术后6、12和18个月血管造影检查显示上游动脉狭窄或闭塞或覆盖分支血管闭塞、临床或cT检查提示出现穿支动脉梗死。结果 5例(3.5%)病人在围手术期出现死亡或严重的脑卒中[改良Rankin评分(mRs)>3分](95%cI:1.3%～8.4%),包括2例治疗后动脉瘤延迟破裂、2例颅内出血和1例血栓栓塞。5例(3.5%)病人于术后30d内出现轻微神经系统并发症(mRs=1),包括短暂性脑缺血发作(n=2)、小面积脑梗死(n=2)和颅神经麻痹(n=1)。术后30d后,1例病人出现致死性的颅内出血,1例病人出现短暂性脑缺血发作。13例颅神经麻痹病人中有10例(95%cI:46%～93.8%)在平均3.5个月内症状完全缓解。术后18个月血管造影显示,动脉瘤完全闭塞的比例为84%(49/58;95%cI:72.1%～92.2%),无病人出现上游动脉闭塞,3例出现上游动脉的狭窄(狭窄程度<50%),2例出现了覆盖分支的闭塞(后交通动脉)。没有病人出现穿支动脉梗死。结论 PED治疗是一种安全、有效的颅内动脉瘤治疗方法。这种方法对于形态不良的动脉瘤,如宽颈、大尺寸、梭形、分支和治疗后血管再通者非常有价值,应成为未破裂动脉瘤或复发动脉瘤的首选治疗。

关键词：动脉瘤前瞻性研究中期效果病人管状栓塞病理装置

Tensor force impact on shell evolution in neutron-rich si and Ni isotopes

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chinese Physics c 2024年第4期48卷 95-106页

作者： s.V.sidorov A.s.Kornilova T.yu.Tretyakova Faculty of Physics Lomonosov Moscow State UniversityMoscow 119991Russia skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State UniversityMoscow 119991Russia

The influence of the tensor interaction of nucleons on the characteristics of neutron-rich silicon and nickel isotopes was studied in this *** forces are considered within the framework of the Hartree-Fock approach with the skyrme *** addition of a tensor component of interaction is shown to improve the description of the splittings between different single-particle states and decrease nucleon-nucleon pairing correlations in silicon and nickel *** attention was directed toward the role of isovector tensor forces relevant to the interaction of like nucleons.

关键词： nuclear shell model tensor interaction silicon isotopes nickel isotopes

Weighted Probability Density Estimator with Updated Bandwidths

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Journal of systems science & complexity 2024年第2期37卷 886-906页

作者： WU Yi yu Wei WANG Xuejun PRAKAsA RAO B L s school of Big Data and Artificial Intelligence Chizhou UniversityChizhou 247000China school of Big Data and statistics Anhui UniversityHefei 230601China cR Rao Advanced Institute of Mathematics Statistics and Computer ScienceHyderabad 500046India

In this paper,the authors study a class of weighted version of probability density *** is shown that the weighted estimator contains some existing estimators of probability density,no matter they are recursive or *** statistical results including weak consistency,strong consistency,rate of strong consistency,and asymptotic normality are established under some mild ***,the random weighted estimator is also *** numerical simulations and a real data analysis are presented to study the numerical performances of the estimators.

关键词： Asymptotic normality consistency numerical simulation probability density real data analysis updated bandwidths weighted estimator

Accuracy comparison and improvement for state of health estimation of lithium-ion battery based on random partial recharges and feature engineering

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Journal of Energy chemistry 2024年第5期92卷 591-604页

作者： Xingjun Li Dan yu søren Byg Vilsen Daniel Ioan stroe Department of Energy Aalborg UniversityAalborg 9220Denmark Department of Mathematical sciences Aalborg UniversityAalborg 9220Denmark Walker Department of Mechanical Engineering The University of Texas at AustinAustinTX 78712USA

state of health(sOH)estimation of e-mobilities operated in real and dynamic conditions is essential and *** of existing estimations are based on a fixed constant current charging and discharging aging profiles,which overlooked the fact that the charging and discharging profiles are random and not complete in real *** work investigates the influence of feature engineering on the accuracy of different machine learning(ML)-based sOH estimations acting on different recharging sub-profiles where a realistic battery mission profile is *** features were extracted from the battery partial recharging profiles,considering different factors such as starting voltage values,charge amount,and charging sliding ***,features were selected based on a feature selection pipeline consisting of filtering and supervised ML-based subset *** linear regression(MLR),Gaussian process regression(GPR),and support vector regression(sVR)were applied to estimate sOH,and root mean square error(RMsE)was used to evaluate and compare the estimation *** results showed that the feature selection pipeline can improve sOH estimation accuracy by 55.05%,2.57%,and 2.82%for MLR,GPR and sVR *** was demonstrated that the estimation based on partial charging profiles with lower starting voltage,large charge,and large sliding window size is more likely to achieve higher *** work hopes to give some insights into the supervised ML-based feature engineering acting on random partial recharges on sOH estimation performance and tries to fill the gap of effective sOH estimation between theoretical study and real dynamic application.

关键词： Feature engineering Dynamic forklift aging profile state of health comparison Machine learning Lithium-ion batteries