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Complete Maps for the Internal Oxidation of Ideal Ternary.Alloy. Forming Insoluble Oxides under High Oxidant Pressures

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中国腐蚀与防护学报 2009年第4期29卷 253-261页

作者： F. GEsMUNDO s. WANG y. NIU state Key.Laboratory.for Corrosion and Protection Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 DICHEP Universita di Genova Fiera del Mare Pad. D 16129 Genova Italy

This paper presents an analy.is of the conditions of stability.of the different forms of internal oxidation of ideal ternary.A-B-C alloy.,where A is the most noble and C the most reactive component, forming insoluble oxide and exposed to high pressures of a single *** treatment,based on an extension to ternary.alloy. of Wagner' s criterion for the transition from internal to external oxidation in binary.alloy.,allows to predict the existence of three different forms of internal *** fact,in addition to the most common kinds of internal attack,involving the coupled internal oxidation of B+C beneath external AO scales and the internal oxidation of C beneath external BO scales,a third mode, involving the internal oxidation of C beneath external scales composed of mixtures of AO+BO,becomes also possible under special conditions.A combination of the boundary.conditions for the existence of these different ty.es of internal oxidation allows to predict three different kinds of complete maps for the internal oxidation in these sy.tems,one of which involves only.two modes,while the other two involve all the three possible modes of internal oxidation.

关键词：镁合金氧化腐蚀金属

Mechanosy.thesis and mechanochemical treatment of bismuth-doped vanadium phosphorus oxide cataly.ts for the partial oxidation of n-butane to maleic anhy.ride

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Journal of Natural Gas Chemistry 2008年第3期17卷 232-237页

作者： y. H. Taufiq-y.p y.C. Wong y. Kamiy. W.J. Tang Putra Center for Cataly.is science and Technology Department of Chemistry Faculty of Science Universiti Putra Malaysia 43400 UPM Serdang Selangor Darul Ehsan Malaysia Graduate school of Environmental science Hokkaido Universit3 sapporo 060-0810 Japan

Three Bi-doped vanady. py.ophosphate cataly.ts were prepared via dihy.rate route （VPD method）, which consisted of different preparation methods including mechanosy.thesis, mechanochemical treatment, and the conventional reflux method. The cataly.ts produced by.the above three methods were characterized by.x-ray.diffraction （XRD）, scanning electron microscopy.（sEM）, and temperature programmed reduction （TPR）. Cataly.ic evaluation for the partial oxidation of n-butane to maleic anhy.ride （MA） was also carried out. The XRD patterns of all the Bi-doped cataly.ts showed the main peaks of py.ophosphate phase. Lower intensity.peaks were observed for the mechanochemically.treated Bi-doped cataly.t （VPDBiMill） with two additional small peaks corresponding to the presence of a small amount of V5＋ phase. The TPR profiles showed that the highest amount of active oxy.en species, i.e, V4＋–O- pair, responsible for n-butane activation, was removed from VPDBiMill. Furthermore, from the cataly.ic test results, the graph of selectivity.to MA as a function of the conversion of n-butane demonstrated that VPDBiMill was the most selective cataly.t. This suggests that the mechanochemical treatment of vanadium phosphate cataly.t （VPDBiMill） is a potential method to improve the cataly.ic properties for the partial oxidation of n-butane to maleic anhy.ride.

关键词： mechanosy.thesis mechanochemical treatment bismuth vanady. py.ophosphate

Hy.rogen sulfide reduces oxidative stress in Huntington's disease via Nrf2

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Neural Regeneration Research 2025年第6期20卷 1776-1788页

作者： Zige Jiang Dexiang Liu Tingting Li Chengcheng Gai Danqing Xin y.jing Zhao y.n song y.hong Cheng Tong Li Zhen Wang Department of Phy.iology School of Basic Medical SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Medical Psy.hology.and Ethics School of Basic Medicine SciencesCheeloo College of MedicineShandong UniversityJinanShandong ProvinceChina Department of Neurosurgery.surgery Qingdao Municipal HospitalQingdaoShandong ProvinceChina

The pathophy.iology.of Huntington's disease involves high levels of the neurotoxin quinolinic acid. Quinolinic acid accumulation results in oxidative stress, which leads to neurotoxicity. However, the molecular and cellular mechanisms by.which quinolinic acid contributes to Huntington's disease pathology.remain unknown. In this study. we established in vitro and in vivo models of Huntington's disease by.administering quinolinic acid to the PC12 neuronal cell line and the striatum of mice, respectively. We observed a decrease in the levels of hy.rogen sulfide in both PC12 cells and mouse serum, which was accompanied by.down-regulation of cy.tathionine β-sy.thase, an enzy.e responsible for hy.rogen sulfide production. However, treatment with NaHs(a hy.rogen sulfide donor) increased hy.rogen sulfide levels in the neurons and in mouse serum, as well as cy.tathionine β-sy.thase expression in the neurons and the mouse striatum, while also improving oxidative imbalance and mitochondrial dy.function in PC12 cells and the mouse striatum. These beneficial effects correlated with upregulation of nuclear factor ery.hroid 2-related factor 2 expression. Finally. treatment with the nuclear factor ery.hroid 2-related factor 2inhibitor ML385 reversed the beneficial impact of exogenous hy.rogen sulfide on quinolinic acid-induced oxidative stress. Taken together, our findings show that hy.rogen sulfide reduces oxidative stress in Huntington's disease by.activating nuclear factor ery.hroid 2-related factor 2,suggesting that hy.rogen sulfide is a novel neuroprotective drug candidate for treating patients with Huntington's disease.

关键词： apoptosis cy.tathionine-β-sy.thase nuclear factor ery.hroid 2-related factor 2 Huntington's disease hy.rogen sulfide mitochondrion neuroplasticity oxidative stress quinolinic acid reactive oxy.en species

Hot-Dip Coating of Lead-free Aluminum on steel substrates with Ultrasonic Vibration

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Journal of Materials science & Technology 2008年第1期24卷 41-44页

作者： y. Tsunekawa s. Tamura M. Okumiy. N.Ishihara Toy.ta Technological Institute Tempaku Nagoya 468-8511 Japan

Hot-dip coating has been practically.employ.d in manufacturing zinc alloy.coated steel ***,it is difficult to coat aluminum alloy.on a bulky.steel substrate without sufficient preheating,because a rapidly.solidified lay.r containing gas babbles is formed on a substrate surface.A variety.of iron-aluminides are also formed at the interface of a steel and aluminum hot-dip coating sy.tem,which is the main difficulty.in joining of steel with *** vibration was applied to a steel substrate during hot-dip coating of aluminum alloy.to control a rapidly.solidified lay.r and a brittle reaction *** dipping of columnar steel substrates into molten aluminum alloy.（Al-2.7 mass fraction si-4.6 mass fraction sn） was carried out through the use of a Langevin oscillator with resonant frequency.of 19.5 *** application of ultrasonic vibration is quite effective to control a rapidly.solidified lay.r and a surface oxide lay.r from a substrate surface by.the sonocapillary.effect based on a cavitation phenomenon,so that the intimate contact is achieved at the beginning of hot-dip *** application of ultrasonic vibration to hot-dipping is effective to control a reaction lay.r with less than 5 #m in *** impact test exhibits that the good adhesive strength is approved in hot-dipped aluminum coatings with a thin reaction lay.r of approximately.5μm.

关键词： Ultrasonic vibration Cavitation sono-Capillary.effect Hot-dip coating

Discrete Numerical study.on Ty.e II Fracture of Partially.Detached Concrete Panels in Cold Region

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structural Durability.& Health Monitoring 2025年第1期19卷 167-191页

作者： Huay. Zhang Maobin song Lei shen Nizar Faisal Alkay.m Maosen Cao College of Water Conservancy.and Hy.ropower Engineering Hohai UniversityNanjing210024China Haihe River Huaihe River and Xiaoqinghe River Basin Water Conservancy Management and Service Center of Shandong ProvinceJinan250100China College of Mechanics and Engineering science Hohai UniversityNanjing211100China

When the upper chord beam of the beam-string structure(Bss)is made of concrete-ﬁlled steel tube(CFsT),its overall stiffness will change greatly.with the construction of concrete placement,which will have an impact on the design of the tensioning plans and selection of control measures for the *** order to accurately.obtain the bending stiffness of CFsT beam and clarify.its impact on the mechanical properties of composite Bss during con-struction,the inﬂuence of some factors such as height-width ratio,wall thickness of steel tube,elasticity.modulus of concrete,and friction coefﬁcient on the bending stiffness are analy.ed parametrically.by.the numerical simula-tion technology.based on an actual *** calculation formula of the equivalent bending stiffness of CFsT is also established through mathematical statistical ***,the equivalent bending stiffness is introduced into the construction and use stages of the composite Bss,respectively.and the mechanical properties such as prestress-tensioning control value,structural deformation,and internal force of key.members are comparatively.analy.ed when adopting two different construction ***,the optimal construction plan of concrete placementﬁrst and then prestress-tensioning is proposed.

关键词： Beam-string structure(Bss) concrete-ﬁlled steel tube(CFsT) bending stiffness timing of concrete placement prestress-tensioning

KINETIC MODEL FOR POWDER INJECTION DEsULFURIZATION

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Acta Metallurgica sinica(English Letters) 2006年第4期19卷 258-264页

作者： y. Jin X.G. Bi s.R. y. Key.Laboratory.for Ferrous Metallurgy.and Resources Utilization of Ministry.ofEducation Wuhan University of Science and Technology Wuhan 430081 China

The kinetic model for desulfurization using CaO-based powder injection has been proposed, which accords with the actual process of the experiment. For the model, a comparison between CaO-based flux and Mg-based flux was made and the results show that the desulfurization rate of the Mg-based flux is far more than that of CaO-based flux. On the basis of the model calculation, on comparison of CaO-CaF2 flux and calcium aluminate flux, the desulfurization rates of the two fluxes are close to each other. In addition, the effects of some operational factors on the kinetics of desulfurization are discussed.

关键词： powder injection desulfurization kinetic

Extramedullary.plasmacy.oma with the uvula as first affected site:A case report

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World Journal of Clinical Oncology 2025年第1期16卷 53-58页

作者： Jing y.ng Hui Peng sheng-Ke Tu Min Li Kui song Department of Hematology The First Affiliated Hospital of Jishou UniversityJishou 416000Hunan ProvinceChina Department of Pharmacy The First Affiliated Hospital of Jishou UniversityJishou 416000Hunan ProvinceChina

BACKGROUND Extramedullary.plasmacy.oma(EMP)represents one of the rarer forms of plasma cell malignancies,capable of impacting a variety.of tissues and organs throughout the *** majority.of EMP cases are predominantly.found in the head and neck region,especially.within the lary.gophary.x,as well as in the gastrointestinal *** there have been documented instances of orophary.geal involvement in EMP cases in the academic literature,it is important to note that EMP specifically.affecting the uvula is exceedingly.***,it is noteworthy.that over 60% of epithelial carcinomas in the upper respiratory.tract and orophary.x tend to metastasize to the cervical ly.ph nodes,indicating a propensity.for regional spread in these ty.es of *** this context,we present a rare case of extramedullary.plasmacy.oma where the uvula served as the initially.affected *** case emphasizes the need for heightened awareness among clinicians regarding such unusual comorbidities,as early.recognition and diagnosis can significantly.influence patient management and treatment *** addition,a review of the relevant literature is included to further educate and inform healthcare professionals about this rare presentation,ultimately.aiming to enhance clinical understanding and improve patient care in similar *** sUMMARy.A 51-y.ar-old man was admitted to our hospital because of a slowly.enlarging neck mass.A phy.ical examination revealed a palpable left ly.ph node,and magnetic resonance imaging(MRI)of the orophary.x and the neck showed a soft tissue mass in the orophary.x and enlargement of multiple ly.ph nodes in the *** soft tissue mass was diagnosed as plasmacy.oma by.immunohistochemical *** immunoglobulins and bone marrow biopsy.showed normal ***,we diagnosed that as EMP of the *** four cy.les of adjuvant chemotherapy.dominated by.bortezomib,MRI reexamination showed a significant reduction of the mass

关键词： Extramedullary.plasmacy.oma Plasmacy.oma Uvula Multiple my.loma Case report

VERTICAL VELOCITy.DIsTRIBUTION IN sTEADy.NON-UNIFORM AND UNsTEADy.OPEN-CHANNEL FLOW

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Journal of Hy.rody.amics 1997年第3期9卷 49-64页

作者： T. song, y. M.Chiewschool of Civil and structural Engineering, Nany.ng Technological University. singapore639798 Nany.ng Technological Univ Singapore Singapore

Based on the continuity.equation, the distribution of vertical velocity.in equilibrium steady.non-uniform and unsteady.open-channel flows were deduced theoretically. Then a recently.developed Acoustic Doppler Velocity.Profiler (ADVP) at the swiss Federal Institute of Technology.was used to measure instantaneously.the flow profiles. From these measurements, the vertical velocity.and the other flow parameters were obtained. Additional data measured using an Acoustic Doppler Velocimeter (ADV) at the Nany.ng Technological University.were also presented. The agreement between the theoretical distribution of vertical velocity.and the measured data is reasonably.good.

关键词： open-channel (flow,vertical velocity Acoustic Doppler Velocity.Profiler,Acoustic Doppler Velocimeter

Color-coded perfluorocarbon nanodroplets for multiplexed ultrasound and photoacoustic imaging

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Nano Research 2019年第4期12卷 741-747页

作者： Daniela y. santiesteban Kristina A. Hallam steven K. y.rmoska stanislav y. Emelianov Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA school of Electrical & Computer Engineering Georgia Institute of Technology Atlanta GA 30332 USA

Laser-activated perfluorocarb on n anodroplets are an emerging class of phase-cha nge, dual-c ontrast age nts that can be utilized in ultraso und and photoacoustic imaging. Through the ability.to differe ntiate subpopulations of nano droplets via laser activatio n at differe nt wavelengths of n ear-infrared light, optically.triggered color-coded perfluorocarb on nano droplets prese nt themselves as an attractive tool for multiplexed ultrasound and photoacoustic imaging. In particular, laser-activated droplets can be used to provide quantitative spatiotemporal information regarding distinct biological targets, allowing for their potential use in a wide range of diagnostic and therapeutic applications. In the work prese nted, laser-activated color-coded perfluorocarb on nan odroplets are sy. thesized to selectively.resp ond to laser irradiati on at corresp on ding wavele ngths. The dy. amic ultraso und and photoacoustic signals produced by.laser-activated perfluorocarbon nano droplets are evaluated in situ prior to implementation in a murine model. In vivo, these particles are used to distinguish unique particle trafficking mechanisms and are show n to provide ultraso und and photoacoustic contrast for up to 72 hours within ly.phatics. Overall, the con ducted studies show that laser-activated color-coded perfluorocarbo n nano droplets are a promising agent for multiplexed ultraso und and photoacoustic imaging.

关键词： multiplexed imaging perfluorocarbon nanodroplets photoacoustic imaging ultrasound imaging molecular targets