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technology trends,challenges,and opportunities of reduced-rare-earth PM motor for modern electric vehicles

Green Energy and Intelligent transportation 2022年第1期1卷 63-81页

作者： Shiyue Zheng Xiaoyong Zhu Zixuan Xiang Lei Xu Li Zhang christopher H.t.Lee School of Electrical and Information Engineering Jiangsu UniversityZhenjiangChina Nanyang technological University Singapore

Nowadays,with increasing concerns about environmental pollution and energy crisis electric vehicles are rapidly developing owing to their significant environmental-friendly *** meet the diverse driving requirements of electric vehicles,the PM motors with high-performance rare-earth PMs have been widely employed in electric vehicle powertrains,which shows the performance merits of high power density and high ***,rare-earth PMs,as non-renewable strategic resources,usually suffer from unstable supply and fluctuation prices,which increases the potential risks of further large-scale application of rare-earth PM *** this also poses a negative factor for the long-term sustainable development of electric vehicles or other applications that rely heavily on rareearth PM *** this background,a type of less-rare-earth PM motors,which aims to effectively alleviate the dependence of high-performance PM motors on rare-earth PMs,has recently drawn increasing attention from experts and *** implies that the investigation and development of less-rare-earth PM motors without compromising performances is becoming a new and hot research direction in the motor *** paper reviews the existing main alternatives for less-rare-earth PM *** on the dominated torque component,the less-rareearth PM motors are divided into two types,which are the less-rare-earth PM-dominated motor and less-rare-earth PM-assisted *** operation principle,design considerations and restrictions of each type of less-rare-earth PM motor is sequentially ***,combined with the potential electric vehicle application,the key problems of less-rare-earth PM motor are summarized and the corresponding technological means are prospected.

关键词： Electric vehicles Permanent magnet motors Rare-earth materials Permanent magnet

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美国花生脱壳机研究现状及发展分析

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华中农业大学学报 2020年第2期39卷 170-180页

作者：陆荣刘志侠高连兴 CHEN Charles BUttS christopher lloyd 沈阳农业大学工程学院沈阳110866 辽宁生态工程职业学院沈阳110122 奥本大学农学院奥本AL36849 美国农业部农业研究局国家花生研究实验室道森GA31742

脱壳是花生利用前必经环节,脱壳机是花生产后加工的核心设备,在很大程度上决定了花生的果仁质量和脱壳效率。中国虽然花生产量位居世界第一,且花生脱壳机得到广泛应用,但花生脱壳技术远不及美国,严重制约花生产后加工业的发展。为借鉴... 详细信息

脱壳是花生利用前必经环节,脱壳机是花生产后加工的核心设备,在很大程度上决定了花生的果仁质量和脱壳效率。中国虽然花生产量位居世界第一,且花生脱壳机得到广泛应用,但花生脱壳技术远不及美国,严重制约花生产后加工业的发展。为借鉴美国花生脱壳技术及发展经验,在实地考察基础上,运用社会调查法、文献研究法和经验总结等方法,本文分析了美国花生脱壳机的发展历史、最新进展和技术衍变过程,剖析了美国现代花生脱壳机的脱壳原理、总体构成、脱壳部件结构型式和特点,总结了美国花生脱壳技术研究的基本方法和成功经验。结果显示,美国花生脱壳机研究密切结合生产需要,起步早且不断创新;多滚筒大型脱壳机既可用于榨油和食品加工的花生脱壳,也可用于种子花生脱壳,各滚筒之间独立驱动,转速200~300 r/min;脱壳机构由带有刮板的脱壳打杆和钢制栅片凹板筛构成,对花生荚果进行刮搓脱壳;复式清选装置首先进行气吸除壳、然后进行筛选和二次气吸清选。美国花生脱壳机技术是机械与农艺等多方面融合研究的结果,对中国花生脱壳技术研究及进展具有重要借鉴意义。

关键词：花生花生脱壳机产后加工手动脱壳机械脱壳关键部件脱壳质量脱壳效率

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Anion order in oxysulfide perovskites:origins and implications

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npj Computational Materials 2020年第1期6卷 1062-1072页

作者： Ghanshyam Pilania Ayana Ghosh Steven t.Hartman Rohan Mishra christopher R.Stanek Blas P.Uberuaga Materials Science and technology Division Los Alamos National LaboratoryLos AlamosNM 87545USA Materials Science&Engineering University of ConnecticutStorrsCT 06269USA Institute of Materials Science&Engineering and Department of Mechanical Engineering&Materials Science Washington University in St.LouisSt.LouisMO 63130USA

Heteroanionic oxysulfide perovskite compounds represent an emerging class of new materials allowing for a wide range of tunability in the electronic structure that could lead to a diverse spectrum of novel and improved *** cation ordered double perovskites—where the origins and design rules of various experimentally observed cation orderings are well known and understood—anion ordering in heteroanionic perovskites remains a largely uncharted territory.

关键词： perovskite anionic ordered

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AVirtual Cloud Storage Architecture for Enhanced Data Security

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Computer Systems Science & Engineering 2023年第2期44卷 1735-1747页

作者： M.Antony Joans Kumar C.christopher Columbus E.Ben George t.Ajith Bosco Raj Department of Information technology St.Xavier’s Catholic College of EngineeringNagercoil629003Tamil NaduIndia Department of Computer Science Engineering PSN College of Engineering and TechnologyTirunelveli627152India Department of Computer Science Engineering University of Technology and Applied SciencesMuscat112Oman Department of Electronics and Communications Engineering PSN College of Engineering and TechnologyTirunelveli627152India

the sensitive data stored in the public cloud by privileged users,such as corporate companies and government agencies are highly vulnerable in the hands of cloud providers and *** proposed Virtual Cloud Storage Archi-tecture is primarily concerned with data integrity and conﬁdentiality,as well as *** provide conﬁdentiality and availability,theﬁle to be stored in cloud storage should be encrypted using an auto-generated key and then encoded into distinct *** the encoded chunks ensured theﬁle integrity,and a newly proposed Circular Shift Chunk Allocation technique was used to determine the order of chunk ***ﬁle could be retrieved by performing the opera-tions in *** the regenerating code,the model could regenerate the missing and corrupted chunks from the *** proposed architecture adds an extra layer of security while maintaining a reasonable response time and sto-rage *** results analysis show that the proposed model has been tested with storage space and response time for storage and *** VCSA model consumes 1.5x(150%)storage *** was found that total storage required for the VCSA model is very low when compared with 2x Replication and completely satisﬁes the CIA *** response time VCSA model was tested with different sizedﬁles starting from 2 to 16 *** response time for storing and retrieving a 2 MBﬁle is 4.96 and 3.77 s respectively,and for a 16 MBﬁle,the response times are 11.06 s for storage and 5.6 s for retrieval.

关键词： Erasure code regenerating code cryptography virtual cloud storage architecture circular shift chunk allocation algorithm

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Mathematical modeling of fuel cells fed with an electrically rechargeable liquid fuel

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Energy and AI 2023年第4期14卷 262-270页

作者： Xingyi Shi Xiaoyu Huo Oladapo christopher Esan Zhefei Pan Liu Yun Liang An t.S.Zhao Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina Research Institute for Smart Energy(RISE) The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARChina Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong SARChina

Lately,utilizing a novel electrically rechargeable liquid fuel(e-fuel),a fuel cell has been designed and fabricated,which is demonstrated to achieve a much better performance than alcoholic liquid fuel cells ***,its current performance,which thus hampers its wide application,demands further improvement to meet up with industrial ***,to attain a better performance for this system,an in-depth understanding of the complex physical and chemical processes within this fuel cell is *** this end,in this work,a two-dimensional transient model has been developed to gain an extensive knowledge of a passive e-fuel cell and analyze the major factors limiting its *** effects of various structural parameters and operating conditions are studied to identify the underlying performance-limiting factors,where deficient mass transport is found to be one of the major *** increment of anode porosity and thickness are found to be effective methods of improving the cell *** study therefore provides insights on achieving further per-formance advancement of the fuel cell in the future.

关键词： E-fuel Mathematical modeling Liquid fuel cells Structural parameters Operation conditions

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trapped vessel of abdominal pain with hepatomegaly: A case report

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World Journal of Hepatology 2018年第11期10卷 887-891页

作者： Sirisha Grandhe Joy A Lee Ankur Chandra christopher Marsh Catherine t Frenette Department of Gastroenterology and Hepato-logy University of California Davis Medical Center Department of Internal Medicine Scripps Green Hospital Department of Vascular Surgery Scripps Green Hospital Scripps Center for Organ transplant Scripps Green Hospital

Abdominal pain with elevated transaminases from inferior vena cava(IVC) obstruction is a relatively common reason for referral and further workup by a hepatologist. the differential for the cause of IVC obstruction is extensive, and the most common etiologies include clotting disorders or recent trauma. In some situations the common etiologies have been ruled out, and the underlying process for the patient's symptoms is still not explained. We present one unique case of abdominal pain and hepatomegaly secondary to IVC constriction from extrinsic compression of the diaphragm. Based on this patient's presentation, we urge that physicians be cognizant of the IVC diameter and consider extrinsic compression as a contributor to the patient's symptoms. If IVC compression from the diaphragm is confirmed, early referral to vascular surgery is strongly advised for further surgical intervention.

关键词： Liver imaging Abdominal pain Hepatic circulation Ischemia/reperfusion

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A review of direct numerical simulations of astrophysical detonations and their implications

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Frontiers of physics 2013年第2期8卷 189-198页

作者： Suzanne t. Parete-Koon christopher R. Smith thomas L. Papatheodore O. E. Bronson Messer National Center for Computational Sciences Oak Ridge National Laboratory Oak Ridge USA TN 37831-6354 Department of Physics and Astronomy University of tennessee KnoxvilleUSA TN 37996-1200

Multi-dimensional direct numerical simulations （DNS） of astrophysical detonations in degenerate matter have revealed that the nuclear burning is typically characterized by cellular structure caused by transverse instabilities in the detonation front. type Ia supernova modelers often use one- dimensional DNS of detonations as inputs or constraints for their whole star simulations. While these one-dimensional studies are useful tools, the true nature of the detonation is multi-dimensional. the multi-dimensional structure of the burning influences the speed, stability, and the composition of the detonation and its burning products, and therefore, could have an impact on the spectra of type Ia supernovae. Considerable effort has been expended modeling type Ia supernovae at densities above 1 ~ 107 ***-3 where the complexities of turbulent burning dominate the flame propagation. How- ever, most full star models turn the nuclear burning schemes off when the density falls below 1 ~ 107 ***-3 and distributed burning begins. the deflagration to detonation transition （DDt） is believed to occur at just these densities and consequently they are the densities important for studying the properties of the subsequent detonation. this work will review the status of DNS studies of detona- tions and their possible implications for type Ia supernova models. It will cover the development of Detonation theory from the first simple Chapman-Jouguet （C J） detonation models to the current models based on the time-dependent, compressible, reactive flow Euler equations of fluid dynamics.

关键词： supernova detonations direct numerical simulations

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Is it Possible to Protect the Adolescent Brain with Internal Mechanisms from Repetitive Head Impacts:Results from a PhaseⅡSingle Cohort,Longitudinal,Self-Control Study

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Journal of Science in Sport and Exercise 2021年第1期3卷 56-65页

作者： Kelsey Logan Weihong Yuan Kim D.Barber Foss Jed A.Diekfuss christopher A.DiCesare James Leach Mekibib Altaye Rhodri S.lloyd Gregory D.Myer the SPORt Center Division of Sports MedicineCincinnati Children’s Hospital Medical CenterBurnet AvenueMLC 10001CincinnatiOH 45229USA Departments of Pediatrics and Internal Medicine University of CincinnatiCollege of MedicineCincinnatiOHUSA Pediatric Neuroimaging Research Consortium Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Rocky Mountain University of Health Professions ProvoUTUSA Division of Radiology Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Division of Biostatistics and Epidemiology Cincinnati Children’s Hospital Medical CenterCincinnatiOHUSA Youth Physical Development Centre Cardiff School of Sport and Health SciencesCardiff Metropolitan UniversityCardiffUK Departments of Pediatrics and Orthopedic Surgery University of CincinnatiCollege of MedicineCincinnatiOHUSA the Micheli Center for Sports Injury Prevention WalthamMAUSA Department of Radiology University of CincinnatiCollege of MedicineCincinnatiOHUSA Emory Sport Performance and Research Center Flowery BranchGAUSA Department of Orthopaedics Emory University School of MedicineAtlantaGAUSA

Purpose to quantify the effects of an externally worn collar device for mitigating the influence of repetitive head impacts on alterations to diffusion tensor imaging(DtI)metrics of white *** Fifteen female high-school soccer athletes(age:14.00-16.98 yrs)completed pre-and post-season DtI over two consecutive years,including measures of diffusivity,changes in which may be associated with brain *** collar was worn during year 1(Yr1)but not during year 2(Yr2).Athlete exposures(AEs)and head impact exposure were recorded over the competitive *** there were no significant differences in AEs or head impact exposures between Yr1 and Yr2(P>0.05).In Yr2,there was significant pre-to post-season mean diffusivity and/or axial diffusivity reduction in multiple WM regions(cor-rected Pto post-season mean diffusivity,axial diffusivity,and radial diffusivity decreases were 3.04%±2.53%,2.97%±2.19%,and 3.37%±3.34%,respectively,significantly greater than pre-to post-season changes in Yr1(mean dif-fusivity:-0.31%±1.78%,P=0.0014;axial diffusivity:-0.02%±2.25%,P=0.0014;radial diffusivity:-0.63%±2.10%,P=0.0030).Conclusions Mild bilateral compression to athletes'internal jugular vein through collar application may have increased intracranial blood volume and spatially redistributed head-impact-derived brain energy ***,future research is needed to elucidate the potential clinical significance of WM changes of various *** trails registration NCt03014492.

关键词： Soccer Brain injury DtI Female athletes White matter

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加速分数型布朗运动粒子追踪模型在水面污染扩散中的应用

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水利学报 2009年第12期39卷 1517-1523页

作者：瞿波 Paul S.Addison christopher t.Mead 南通大学理学院江苏南通226001 Cardio Digital Ltd Elvingston Science Centre HR Wallingford Ltd

对沿海水域的non-Fickian扩散现象的观测表明,沿海表层水域的Hurst指数H并不局限于0～1的范围。因此本研究在分数型布朗运动的基础上,引进加速分数型布朗运动来模拟non-Fickian扩散,使表面Hurst指数可以大于1,从而建立了一种新型的粒子... 详细信息

对沿海水域的non-Fickian扩散现象的观测表明,沿海表层水域的Hurst指数H并不局限于0～1的范围。因此本研究在分数型布朗运动的基础上,引进加速分数型布朗运动来模拟non-Fickian扩散,使表面Hurst指数可以大于1,从而建立了一种新型的粒子追踪技术,由此来模拟沿海水域中的non-Fickian传播。随后对使用粒子云模拟沿海水域中污染物的non-Fickian扩散的方法进行了研究。并通过比较实际观测数据,以及英国HR Wallingford传统的Fickian扩散模型的计算结果表明,本文模拟的结果较好。

关键词：分数型布朗运动加速分数型布朗运动粒子追踪模型 Fickian扩散 non-Fickian扩散

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Recovery approaches in mental health: A qualitative evaluation of the Whole Life therapy programme for persons with schizophrenia

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Health 2013年第3期5卷 582-587页

作者： Brian Littlechild Andrew Henry Smith Glynis Meredith-Windle tim Gale Michele lloyd christopher Hawley ArcHealth Bedfordshire UK Hertfordshire Partnership NHS Foundation Mental Health trust Hertfordshire UK School of Health and Social Work University of Hertfordshire Hatfield UK

the recovery approach within mental health services has in recent years been influential in promoting more active participation from service users concerning their treatment and progress, within a move towards models of interventions based on social models and ideas of service user empowerment. Although mental health recovery models are often heralded as ideological goals, comparatively little has been documented about the means of achieving these. this article sets out the nature and content of the Whole Life Programme, used within the Hertfordshire NHS Partnership Foundation trust, and the results of qualitative research into the programme that set out to analyse the impact of its delivery from the perspectives of service users. the research examined the experiences and views of participants receiving treatment several months after the completion of the programme, and also of those who withdrew prematurely, in order to learn from these experiences, adding to our understanding of how one recovery based approach, the Whole Life Manual, can be applied in practice.

关键词： Mental Health Recovery Whole Life Programme Evaluation Service User Perspectives

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