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PARTIcLEs ANALYsIs OF Al_2O_3 PARTIcLE REINFORcED ZL202 MATRIX cOMPOsITEs PREPARED BY IN-sITU REAcTION

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Acta Metallurgica sinica(English Letters) 2002年第6期15卷 531-537页

作者： X.H. Yan, s.c. sun and Z.Y. Jiangschool of Materials science and Engineering, Jiangsu University, Jiangsu 212013, china school of Materials science and Engineering Jiangsu University Jiangsu 212013 China

ZL202 matrix composite reinforced by Al2O3 particles was prepared by combining in-situ reaction and casting techniques. Particles' size in the composites was from 1 to 5 microns in diameter. X-ray diffraction analysis verified that the reinforcing particleswere δ-Al2O3 which belong to γ-Al2O3 series. The wetting angle between matrix andreinforcement was less than 90°. Energy spectrum analysis indicated that the reactionin bell cover pressing process took place not so completely as in flouring stir process. When the reaction was finished, the matrix was still ZL202 alloy in ***.

关键词： metal matrix composites in-situ reaction particles

Electronic structure of correlated topological insulator candidate YbB6 studied by photoemission and quantum oscillation

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chinese Physics B 2020年第1期29卷 70-75页

作者： T Zhang G Li s c sun N Qin L Kang s H Yao H M Weng s K Mo L Li Z K Liu L X Yang Y L chen state Key Laboratory of Low Dimensional Quantum Physics Department of PhysicsTsinghua UniversityBeijing 100084China Department of Physics University of MichiganAnn ArborMI 48109USA Beijing National Laboratory for condensed Matter Physics and Institute of Physics Chinese Academy of SciencesBeijing 100190China National Laboratory of solid state Microstructures&Department of Materials science and Engineering Nanjing UniversityNanjing 210093China collaborative Innovation center of Quantum Matter BeijingChina songshan Lake Materials Laboratory Dongguan 523808China cAs center for Excellence in Topological Quantum computation Beijing 100190China Physical science Laboratory Huairou National Comprehensive Science CenterBeijing 101400China Advanced Light source Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA school of Physical science and Technology ShanghaiTech University and CAS-Shanghai Science Research CenterShanghai 201210China shanghaiTech Laboratory for Topological Physics Shanghai 200031China Frontier science center for Quantum Information Beijing 100084China Department of Physics Clarendon LaboratoryUniversity of Oxford Parks RoadOxford OX13PUUK

Angle-resolved photoemission spectroscopy(ARPEs)and torque magnetometry(TM)measurements have been carried out to study the electronic structures of a correlated topological insulator(TI)candidate Yb *** observed clear surface states on the[001]surface centered at theГ^- and М^- points of the surface Brillouin ***,the fermiology revealed by the quantum oscillation of TM measurements agrees excellently with ARPEs ***,the band structures we observed suggest that the band inversion in Yb B6 happens between the Yb5 dand B2bands,instead of the Yb5dand Yb4fbands as suggested by previous theoretical investigation,which will help settle the heavy debate regarding the topological nature of samarium/ytterbium hexaborides.

关键词： topological insulator electronic structure surface states

EFFEcTs OF RARE EARTH MIXTURE ON MEcHANIcAL PROPERTIEs OF cuZnAl sHAPE MEMORY ALLOYs

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Acta Metallurgica sinica(English Letters) 1999年第4期12卷 509-514页

作者： N.c.si and s.c.sun Departmentof Materials Engineering,Jiangsu University of science and Technology,Zhenjiang 212013 , china

With thehelpofquantitative metallograph ,tensiletest,electron probeandscan electron mi croscope,theinfluencesof mixture rareearth ( RE) on the grain size, dynamics of grain growth and mechanicalpropertiesof cuZnAlshape memoryalloys wereinvestigated . Theex perimentalresultsshowsthat REcanrefinegrainsgreatly,improvethe mechanicalpropertiesremarkably andchangethetensilefracturefrom brittletypebordered grainstoplastictypeinthecondition of maintainingshape memory properties. Moreover microstructuresrevealthatREwhich accumulates on the grain boundariescan restrain grains’growing. In addition, the mechanismsofrefininggrainsizeandimproving mechanicalpropertiesarealsodiscussed.

关键词： rareearth cuZnAlalloy mechanicalproperty,shape memory alloys

EFFEcTs OF THERMAL cYcLEs ON THE PROPERTIEs OF cuZnAl sHAPE MEMORY ALLOYs

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Acta Metallurgica sinica(English Letters) 1999年第4期12卷 515-520页

作者： N.c.si and s.c.sun Departmentof Materials Engineering,Jiangsu University of science and Technology,Zhenjiang 212013 ,china

Theinfluencesofthermalcycleson propertiesof cuZnAlshape memory alloysunder differentheatingtemperatures, pre deformation amountεand addition amountofcomplex rareearthmixture wereresearched with X ray diffraction and electron microscope. Theresultsindicate thatthermalcyclescanincreasethetransformationtemperatureofthealloysby 5～6℃.In creasingthe pre deformation amount will decrease the necessary cycle times for stabletwo -wayshape memory property. Howevertheshaperecovery rateofthealloy willdecreaseasthepre deformation amountexceeds3 6 % . Theshape memory propertyofthealloy willchangeinsignificantlyiftheaddition amountofrareearthislessthan 0 10 % . Butthealloys with outrareearth willhave worseshape memory property afterthermalcyclesreach 1800 times.

关键词： thermalcycle shape memory alloy advance deformation shape memoryproperty

Immune receptor signaling： from ubiquitination to NF-κB ctivation

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cellular & Molecular Immunology 2012年第2期9卷 97-98页

作者： Dr s-c sun Department of Immunology The University of Texas MD Anderson cancer center Houston TX 77030 USA

The immune system functions as a dynamic and sophisticated network that ensures efficient response to foreign antigens and tolerance to self-tissues） The function of the immune system relies on signal transduction that connects immune cells to the extracellular environment and mediates communication among the different types of immune cells. Among the well-characterized immunoregulatory sienaling pathways is that which leads to the activation of nuclear

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controversies in fecal incontinence

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World Journal of Gastroenterology 2025年第3期31卷 113-119页

作者： Andreia Albuquerque satish s c Rao school of Medicine and Biomedical sciences Fernando Pessoa UniversityGondomar 4420-096PortoPortugal Precancerous Lesions and Early cancer Management Research Group RIsE@cI-IPO(Health Research Network) Portuguese Oncology Institute of PortoPorto 4200-072Portugal Division of Gastroenterology and Hepatology Department of Internal MedicineAugusta UniversityAugustaGA 30912United States

Fecal incontinence is a common condition that can significantly impact patients’quality of *** anal sphincter injury and anorectal surgeries are common *** ultrasound and anorectal manometry are important diagnostic tools for evaluating *** are various treatment options,including diet,lifestyle modifications,drugs,biofeedback therapy,tibial and sacral nerve neuromodulation therapy,and *** this editorial,we will discuss current controversies and novel approaches to fecal *** for asymptomatic anal sphincter defects after obstetric anal sphincter injury and in patients with inflammatory bowel disease is not generally recommended,but may be helpful in selected *** Garg incontinence score is a new score that includes the assessment of solid,liquid,flatus,mucous,stress and urge fecal *** tests such as translumbosacral anorectal magnetic stimulation and novel therapies such as translumbosacral neuromodulation therapy are promising diagnostic and treatment options,for both fecal incontinence and *** biofeedback therapy can overcome some limitations of the office-based *** muscle-derived cell implantation of the external anal sphincter has been further studied as a possible treatment *** neuromodulation may be useful in scleroderma,congenital fecal incontinence and inflammatory bowel disease but merits further study.

关键词： Fecal incontinence Endoanal ultrasound Anal sphincter defects Biofeedback Neuropathy sacral neuromodulation

Panax ginseng's large DNA fragment (100kb) transform ganoderma lucidum's protoplast

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Panax ginseng's large DNA fragment (100kb) transform ganoder...

Brain endothelial cyclic GMP-AMP synthase(cGAs)-stimulator of interferon genes(sTING)signaling pathway in aging and neurodegeneration

第十一届全国植物基因组学大会

作者： L.Zhang,s.Jiang,c.sun,M.Zhang,Y.Wang~* Jilin Agricultural University,changchun,130118,china

Ginsenoside and ganoderma lucidum acid are terpene compounds which are biosynthesized via the mevalonate *** Panax ginseng genomics research achievements,screening the cloning about Ginsenoside compound from Panax gin...

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Neural Regeneration Research 2025年第7期20卷 2005-2007页

作者： Bryan sun Lulin Li Jian Luo Palo Alto Veterans Institute for Research VA Palo Alto Health Care SystemPalo AltoCAUSA Polytrauma system of care VA Palo Alto Health Care SystemPalo AltoCAUSA

The cyclic GMP-AMP synthase(cGAs)-stimulator of interferon genes(sTING)signaling pathway has emerged as a key mediator of *** current studies primarily attribute its effects to neurons and glial cells,emerging research suggests that cGAs-sTING signaling may play a critical role in cerebral vasculature,particularly in brain endothelial ***,studying the role 7of inflammation caused by the cGAs-sTING pathway in brain endothelial cells could provide a more comprehensive understanding of neuroinflammatory disease and new avenues for therapeutic ***,we review the multifaceted role of global cGAs-sTING signaling in various neurological and neuroinflammatory diseases and the potential contribution of cGAs-sTING in brain endothelial cells.

关键词： stimulator interferon inflammation

Influence of introducing Zr,Ti,Nb and ce elements on externally solidified crystals and mechanical properties of high-pressure die-casting Al–si alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 147-153页

作者： Junjie Li Wenbo Yu Zhenyu sun Weichen Zheng Liangwei Zhang Yanling Xue Wenning Liu shoumei Xiong center of Materials science and Engineering School of Mechanical and Electronic Control EngineeringBeijing Jiaotong UniversityBeijing 100044China Traffic&Transportation Engineering Central South UniversityChangsha 410075China shanghai synchrotron Radiation Facility Shanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201204China school of Materials science and Engineering Tsinghua UniversityBeijing 100084China

High pressure die casting(HPDc)Alsi10Mn Mg alloy castings are widely used in the automobile *** can optimize the mechanical properties of castings through heat treatment,while the release of thermal stress arouses the deformation of large integrated ***,the development of non-heat treatment Al alloys is becoming the hot *** addition,HPDc contains externally solidified crystals(Escs),which are detrimental to the mechanical properties of *** achieve high strength and toughness of non-heat treatment die-casting Al-si alloy,we used Alsi9Mn alloy as matrix with the introduction of Zr,Ti,Nb,and *** influences on Escs and mechanical properties were systematically investigated through three-dimensional reconstruction and thermodynamic *** results reveal that the addition of Ti increased Escs'size and porosity,while the introduction of Nb refined Escs and decreased ***,large-sized Al_3(Zr,Ti)phases formed and degraded the mechanical *** introduction of ce resulted in the poisoning effect and reduced mechanical properties.

关键词： aluminium alloy high-pressure die-casting externally solidified crystals non-heat treatment