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Rare Metals 2007年第S1期26卷 14-19页

作者： ri e h ri hosen DOROFeeV S V KUhAReNKO e B Department of Foundry and Process Metallurgy Metrology and Material Inspection LaboratoryPacific National University

The results of research on influence of an irradiation of a liquid phase by nanosecond electromagnetic impulses(NeMI) on processes of crystallization and structurization,physicomechanical and operational properties of... 详细信息

关键词： generator NeMI nanosecond electromagnetic impulses corrosion resistant heat resistance

Free vibration and transient response of double curved beams connected by intermediate straight beams

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Applied Mathematics and Mechanics(english edition) 2025年第1期46卷 37-62页

作者： R.A.JAFAri-TALOOKOLAeI h.GhANDVAR e.JUMAeV S.KhATIR T.CUONG-Le School of Mechanical engineering Babol Noshirvani University of Technology Department of Mechanical engineering Faculty of Engineering New Uzbekistan University University of Business and Science Center for engineering Application and Technology Solutions Ho Chi Minh City Open University

This paper investigates the free vibration and transient response of interconnected structures including double curved beams and intermediate straight beams,which are all constructed from functionally graded porous(FGP) materials. The strain potential and kinetic energies of each beam along with the work done by the external force are calculated. Additionally, a higher-order beam element is introduced to derive stiffness and mass matrices, along with the force vector. The curved and straight beams are discretized, and their assembled stiffness, mass matrices, and force vectors, are *** conditions at the joints are used to derive the total matrices of the entire structure. Subsequently, the natural frequencies and transient response of the system are determined. The accuracy of the mathematical model and the self-developed computer program is validated through the comparison of the obtained results with those of the existing literature and commercial software ANSYS, demonstrating excellent ***, a comprehensive study is conducted to investigate the effects of various parameters on the free vibration and transient response of the considered structure.

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Microstructure change in Fe-based metallic glass and nanocrystalline alloy induced by liquid nitrogen treatment

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Journal of Materials Science & Technology 2021年第10期69卷 1-6页

作者： M.C.ri D.W.Ding Y.h.Sun W.h.Wang Institute of Physics Chinese Academy of SciencesBeijing100190China Songshan Lake Materials Laboratory Dongguan523808China

The effects of acyclic liquid nitrogen(LN)treatment in a temperature range of-196℃to 50℃on the thermal and magnetic stability of Fe78Si9B13 and Fe73.5Si13.5B9Nb3Cu1 glassy ribbons have been *** intrinsic heterogeneities of the metallic glasses can be activated through cryogenic thermal cycling,making irreversible structural changes after the treatment and inducing rejuvenation to the *** microstructural changes of both Fe-based metallic glass(MG)and nanocrystalline alloy induced by LN treatment were *** experimental results show that the LN treatment could effectively rejuvenate the Fe-Si-B MGs and change their thermomechanical and magnetic *** on the partially-crystallinity and well-known magnetic constants,the increase of the energy at the order of 10m J/g and magnetic domain wall movement and rotation at the order of 5-6μm and 0.5°-0.8°are found for FINeMeT-type amorphous alloy after LN *** is also found that LN treatment can contribute a little stored energy to the magnetic domain wall movement and magnetic domain rotation.

关键词： Metallic glasses Cryogenic thermal treatment Soft magnetic materials Rejuvenation Stored energy Domain wall

Formation of spherical alloy microparticles in a porous salt medium

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Journal of Materials Science & Technology 2020年第8期36卷 189-196页

作者： hayk hNersisyan Suk Cheol Kwon Vladislav e.ri Wan Bae Kim Woo Seok Choi Jong hyeon Lee RASOM Chungnam National University99 Daehak-roYuseong-guDaejeon 34134Republic of Korea Graduate School of Materials Science and engineering Chungnam National University99 Daehak-roYuseong-guDaejeon 34134Republic of Korea

This study describes the development of a one-pot strategy to produce spherical alloy microparticles for advanced near-net-shape manufacturing processes, including additive manufacturing and powder injection molding. The Al Si12 eutectic alloy(ca. 12 wt% Si) system was chosen as the model with which the main experiments were carried out. The proposed process synergistically integrates a few common,low-cost processing techniques including the mixing of Al micrometer size particles with silicon and sodium chloride, heat-treating the mixture at temperatures of 650–810°C, and the dissolution of salt in water to produce spherical Al Si12 alloy particles without the need to rely on costly melting and atomizing techniques. This new process can use laow-cost source Al and Si powders as the raw materials to produce10–200 um-sized spherical particles of Al Si12. The Ansys-CFX computational fluid dynamics software was used to analyze the flow behavior of Al Si12 liquid droplets and particle size refinement in the narrow voids of the sample.

关键词： AlSi(12)alloy Morphology evaluation Particle distribution Simulation Solid-liquid transition Spheroidization

Boundedness of θ-type Calderon-Zygmund operators on non-homogeneous metric measure space

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Frontiers of Mathematics in China 2016年第1期11卷 141-153页

作者： Chol ri Zhenqiu ZhANG Department of Mathematics Kim Hyong Jik Normal University PyongYang DPR Korea School of Mathematical Sciences and LPMC Nankai University Tianjin 300071 China

Let （X,d,μ） be a metric measure space satisfying both the upper doubling and the geometrically doubling conditions in the sense of hytSnen. Under this assumption, we prove that θ-type Calderon-Zygmund operators which are bounded on L2（μ） are also bounded from L∞（μ） into RBMO（μ） and from h1,∞at（μ） into L1（μ）.

关键词： Non-homogeneous spaces θ-type Calderon-Zygmund operators,RBMO(μ) space h1,∞at(μ) space

Does mesenchymal stem cell’s secretome affect spinal sensory circuits?Implication for pain therapies

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Neural Regeneration Research 2025年第1期20卷 181-183页

作者： Francesco Ferrini esri h.Juárez Adalberto Merighi Department of Veterinary Sciences University of TurinGrugliascoTOItaly Department of Psychiatry and Neuroscience UniversitéLavalQuébec CityQCCanada

Mesenchymal stem cells(MSCs)are multipotent adult stem cells of mesodermal origin that can be isolated from various tissues,including bone marrow,tooth pulp,adipose tissue,and umbilical *** have gained significant attention in regenerative medicine due to their ability to modulate the immune system and favor tissue *** enrich the medium in which they are cultivated with a broad range of bioactive molecules,including growth factors,cytokines,chemokines,enzymes,nucleic acids,and extracellular vesicles that collectively compose the MSC *** increasing number of pre-clinical studies suggest that delivering in vivo an MSC-conditioned medium(i.e.,the medium collected from MSC cultures after at least 3 days of exposure)exerts neuroprotective and anti-inflammatory effects in a variety of neurological conditions.

关键词： protective clinical collective

The sexually dimorphic expression of glutamate transporters and their implication in pain after spinal cord injury

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Neural Regeneration Research 2025年第11期20卷 3317-3329页

作者： Jennifer M.Colón-Mercado Aranza I.Torrado-Tapias Iris K.Salgado Jose M.Santiago Samuel e.Ocasio rivera Dina P.Bracho-rincon Luis h.Pagan rivera Jorge D.Miranda Department of Physiology University of Puerto RicoMedical Sciences CampusSan JuanPRUSA National Institutes of health National Human Genome Research InstituteBethesdaMDUSA Universidad Central del Caribe School of MedicineBayamónPRUSA University of Puerto rico Carolina CampusCarolinaPRUSA Institute of Neurobiology San JuanPRUSA

In addition to the loss of motor function,~60% of patients develop pain after spinal cord *** cellular-molecular mechanisms are not well understood,but the data suggests that plasticity within the rostral,epicenter,and caudal penumbra of the injury site initiates a cellularmolecular interplay that acts as a rewiring mechanism leading to central neuropathic *** can lead to the formation of new connections triggering abnormal sensory *** excitatory glutamate transporters are responsible for the reuptake of extracellular glutamate which makes them a critical target to prevent neuronal hyperexcitability and *** previous studies showed a sexually dimorphic therapeutic window for spinal cord injury after treatment with the selective estrogen receptor modulator *** this study,we investigated the anti-allodynic effects of tamoxifen in male and female rats with spinal cord *** hypothesized that tamoxifen exerts anti-allodynic effects by increasing the expression of glutamate transporters,leading to reduced hyperexcitability of the secondary neuron or by decreasing aberrant *** and female rats received a moderate contusion to the thoracic spinal cord followed by subcutaneous slow-release treatment of tamoxifen or matrix pellets as a control(placebo).We used von Frey monofilaments and the“up-down method”to evaluate mechanical *** treatment decreased allodynia only in female rats with spinal cord injury revealing a sexdependent *** expression profile of glutamatergic transporters(excitatory amino acid transporter 1/glutamate aspartate transporter and excitatory amino acid transporter 2/glutamate transporter-1)revealed a sexual dimorphism in the rostral,epicenter,and caudal areas of the spinal cord with a pattern of expression primarily on *** rodents showed a significantly higher level of excitatory amino acid transporter-1 expression while male rodents showed increased

关键词： allodynia central neuropathic pain eAAT-1/GLAST eAAT-2/GLT-1 glutamate transporters selective estrogen receptor modulator sexual dimorphism spinal cord injury trauma

Understanding the Recovery of the Intervertebral Disc:A Comprehensive Review of In Vivo and In Vitro Studies

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Journal of Bionic engineering 2024年第4期21卷 1919-1948页

作者： Faten Feki Fahmi Zaïri Abderrahman Tamoud Melissa Moulart Rym Taktak Nader haddar Fahed Zaïri Sfax University ENISMaterials Engineering and Environment Laboratory3038SfaxTunisia University of Lille IMT Nord EuropeJUNIAUniversity of ArtoisULR 4515-LGCgELaboratoire de Génie Civil et geo-Environnement59000LilleFrance PrediTwins Lab 59000LilleFrance Japet Medical Device 59000LilleFrance Sfax University ENISLaboratory of Advanced Materials3038SfaxTunisia Ramsay Générale de Santé Hôpital PrivéLe Bois59000LilleFrance

Within the consistent daily rhythm of human life,intervertebral discs endure a variety of complex loads beyond the influences of gravity and muscle forces,leading to significant morphological changes(in terms of volume,area,and height)as well as biomechanical alterations,including an increase in disc stiffness and a decrease in intradiscal ***,the discs demonstrate an ability to regain their original morphological and biomechanical characteristics after a period of nocturnal *** preservation of normal disc function is critically dependent on this recovery phase,which serves to forestall premature disc *** phenomenon of disc recovery has been extensively documented through numerous in vivo studies employing advanced clinical techniques such as Magnetic Resonance Imaging(Mri),stadiometry,and intradiscal pressure ***,the findings from in vitro studies present a more complex picture,with reports varying between full recovery and only partial recuperation of the disc ***,research focusing on degenerated discs in vitro has shed light on the quantifiable impact of degeneration on the disc ability to *** dynamics within the disc are considered a primary factor in recovery,yet the disc intricate multiscale structure and its viscoelastic properties also play key *** elements interact in complex ways to influence the recovery mechanism,particularly in relation to the overall health of the *** objective of this review is to collate,analyze,and critically evaluate the existing body of in vivo and in vitro research on this topic,providing a comprehensive understanding of disc recovery *** understanding offers a blueprint for future advancements in medical treatments and bionic engineering solutions designed to mimic,support,and enhance the natural recovery processes of intervertebral discs.

关键词： Intervertebral disc Recovery In vivo vs.in vitro studies Degeneration Viscoelastic effects Fluid dynamics

Vancomycin-induced thrombocytopenia in endocarditis:A case report and review of literature

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World Journal of Clinical Cases 2021年第7期9卷 1696-1704页

作者： Si-ri Guleng ri-han Wu Xiao-Bin Guo Department of Pharmacy Inner Mongolia Autonomous Region People's HospitalHohhot 010010Inner Mongolia AutonomousChina

BACKGROUND Thrombocytopenia is a serious complication in the medical practice of numerous *** is frequently used for the prophylaxis and treatment of suspected or identified methicillin-resistant positive *** cases with vancomycin-induced thrombocytopenia(VIT)have been ***,these have rarely been extensively *** present report describes a case of VIT in endocarditis,and reviews all VIT cases reported in the *** SUMMARY A 26-year-old male diagnosed with infective endocarditis was *** patient was treated with multiple drugs,including vancomycin,which was initially intravenously given at 1000 mg every 12 h and subsequently at 500 mg every 8 h on day *** day 11,the platelet count decreased to 51×10^(9)/L,vancomycin was switched to 500 mg every 12 h,and platelet transfusion was *** day 17,the platelet count dropped to 27×10^(9)/L,and platelet transfusion was administered *** day 23,vancomycin was adjusted to 500 mg every 8 h as the trough concentration dropped to the minimum effective *** day 33,the platelet count declined to approximately 40×10^(9)/*** platelet transfusion,the platelet count rebounded to 90×10^(9)/L on day 35 but dropped again to 42×10^(9)/L on day *** on the time-to-platelet count curve and Naranjo’s Adverse Drug Reaction Probability Scale score,VIT was *** vancomycin discontinuation and platelet transfusion,the platelet count gradually *** The diagnosis of VIT can be achieved through the time-to-platelet count curve and Naranjo’s Adverse Drug Reaction Probability Scale *** platelet count cannot be normalized simply by platelet transfusion alone,and vancomycin discontinuation is essential.

关键词： Case report Vancomycin Thrombocytopenia endocarditis Platelet transfusion Literature review

A highly concentrated vanadium protic ionic liquid electrolyte for the vanadium redox flow battery

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Journal of energy Chemistry 2021年第6期30卷 238-246,I0007页

作者： Georgios Nikiforidis Amal Belhcen Mérièm Anouti Laboratoire PCM2e Universitéde ToursParc de Grandmont37200 ToursFrance Le STUDIUM Institute for Advanced Studies 45000 OrléansFrance

A protic ionic liquid is designed and implemented for the first time as a solvent for a high energy density vanadium redox flow *** being less conductive than standa rd aqueous electrolytes,it is thermally stable on a 100 ℃ temperature window,chemically stable for at least 60 days,equally viscous and dense with typical aqueous solvents and most importantly able to solubilize to 6 mol L^(-1) vanadium sulfate,thus increasing the VRFB energy density by a factor of *** measurements revealed quasi-reversible redox transitions for both catholyte and anolyte at 25 ℃ while a proof-of-concept redox flow cell with the proposed electrolyte was tested for a total of 150 cycles at 25 ℃,showing an open circuit potential of 1.39 V and energy and coulombic efficiencies of 65% and 93%,***’s more,the battery can be equally cycled at 45℃ showing good thermal *** study underlines a new route to improve the energy-to-volume ratio of energy storage system.

关键词： Protic ionic liquids Redox flow battery electrolyte high energy density