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Euler solution using.adaptive Cartesian g.id with a g.idless boundary treatment

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Acta Mechanica Sinica 2009年第2期25卷 187-196页

作者： L. Xiang.g. yang LHD of Institute of Mechanics, Chinese Academy of Sciences, 100190 Beijing. China LHD of Institute of Mechanics Chinese Academy of Sciences Beijing China

A quadtree-based adaptive Cartesian g.id g.nerator and flow solver were developed. The g.id adaptation based on pressure or density g.adient was performed and a g.idless method based on the least-square fashion was used to treat the wall surface boundary condition, which is g.nerally difficult to be handled for the common Cartesian g.id. First, to validate the technique of g.id adaptation, the benchmarks over a forward-facing.step and double Mach reflection were computed. Second, the flows over the NACA 0012 airfoil and a two-element airfoil were calculated to validate the developed g.idless method. The computational results indi- cate the developed method is reasonable for complex flows.

关键词： Cartesian g.id g.idless method Adaptation technique Euler solution

MICROSTRUCTURAL EVOLUTION OF HIg.LY UNDERCOOLED EUTECTIC Ni78.6 Si21.4 ALLOY

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Acta Metallurg.ca Sinica(Eng.ish Letters) 2006年第1期19卷 43-50页

作者： Y.P. Lu g. C. yang C.L. yang H.P. Wang.Y.H. Zhou State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi＇an 710072 China Department of Applied Physics Northwestern Polytechnical University Xi＇an 710072China

A larg. undercooling.level up to 550K （0.386Te） was achieved in eutectic Ni78.6Si21.4melt by the combination of molten-g.ass and cyclic superheating. A microcrystaUine structure is obtained at larg. undercooling. Surprising.y, the morpholog. of ct（Ni） phase transits from the non-faceted phaseto faceted phase at larg. undercooling.of 390K. Based on the classical nucleation theory and transient nucleation theory, the process of microstructure evolution and competitive nucleation was analyzed, and the refinement of crystal structure is determined by the hig. nucleation rate under larg. undercooling.

关键词： hig. undercooling molten-g.ass eutectic rapid solidification

Determination of Exposure to Medical and Industrial Toxic Chemicals from Beijing.by Human Hair, Nail and Blood Analysis

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Forensic Medicine and Anatomy Research 2015年第1期3卷 27-31页

作者： g. yang D. Kechkeche H. Belhadj-Tahar N. Sadeg School of Medicine Tongji University Shanghai China Departement of Chemistry University of Pierre et Marie-Curie Paris France AFPreMed Toxicology Research Group Toulouse France

The aim of the present work was to investig.te the exposure to the medical and industrial toxic chemicals. The research was carried out on hair, nail and blood samples in a panel of 40 healthy volunteers ag.d 7 to 77 with an averag. of 45 ± 19 years (18 women (45%) and 22 men (55%)). All of these individuals had not received medication for at least 1 year, including.antibiotics and psychotropic. This study was realized from July 2013 to March 2014 in Beijing. China. The method for an accurate and reliable screening.of medical and an industrial toxic chemical was based on detection and assay by ultra-hig. performance liquid chromatog.aphy with UV detection type of diode arrays. Also more than 10,000 toxic molecules commonly found in western industrial countries were screened by coupling.g.s chromatog.aphy and mass spectrometry. The main results indicate that the molecules analyzed are mainly antibiotic (g.ntamycine and Tobramycine), antidepressant (Amitriptylin and its metabolites), narcotic (MDMA and Clonitazene), ing.edient in cosmetics (Benzenediol and Benzoic acid), insecticide (Carbamate derivative), ketamine, chlorhexidine and phthalate derivatives. There are no detailed documented baseline data of the analysis of medical and Industrial toxic pollutants in hair, nail and blood samples in Beijing.however, this study should be completed on samples from other provinces of China. This study is the first of its kind. Therefore, further studies should be conducted in other cities and provinces of China to be compared with each other.

关键词： Pollutants Hair Nail Blood Toxicolog.cal Screening Separative Method Mass Spectrometry

Microstructural Characterizations of Marag.ng.Steel Processed by Equal-channel Ang.lar Pressing

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Microstructural Characterizations of Maraging Steel Processe...

Transcatheter Decompression of the Left Atrium in an Adolescent with a Double Inlet Left Ventricle, Severe Parachute Mitral Valve Stenosis and Pulmonary Hypertension

中国材料大会2012

作者： M.X. yang g. yang Z.D. Liu C. Wang.C.X. Huang Faculty of Material Science and Eng.neering Kunming University of Science and Technology Institute for Structural Materials Central Iron and Steel Research Institute Department of mechanics Sichuan University

ISBN: (纸本)9783037856079;3037856076

Microstructures of a marag.ng.steel subjected to equal-channel ang.lar pressing.（ECAP） up to 16 passes at room temperature were investig.ted. Electron backscattered diffraction （EBSD） and transmission electron microscopy （TEM） examinations showed that the microstructures of the as-processed samples were characterized by a well-defined lamellar structure. With increasing.the number of ECAP passes from 1 to 16, the lamellar spacing.was sig.ificantly decreased from ～323 nm to ～54 nm, while the volume fraction of hig.-ang.e lamellar boundaries （HALBs, having.the misorientation larg.r than 15 °） was obviously increased form ～46% to ～80%. The real lamellar-type nanostructured microstructures were completely accomplished in the tested steel after 8 or more ECAP passes. In addition, the g.ain refinement mechanism of marag.ng.steel during.the processing.was discussed in detail.

关键词： Nanocrystalline Marag.ng.steel Boundary misorientation Equal-channel ang.lar pressing.(ECAP)

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World Journal of Cardiovascular Diseases 2017年第12期7卷 451-457页

作者： Y. H. Cai Q. Li Z. Li g. yang D. Schranz MINg.I Cardiovascular Hospital Heart Center Wuxi China

A 17-year-old adolescent with non-operated double inlet left-ventricle and severe stenosed parachute mitral valve is reported. He was admitted with repetitive syncope related to intermittent atrial fibrillation. Life-threatening.syncope combined with pre- and post-capillary pulmonary hypertension tog.ther with his sing.e ventricle pathophysiolog. led to the decision for left atrial decompression by percutaneous static atrial septum ballooning.after transseptal needle perforation. Aiming.to create a restrictive atrial septum defect, unloading.of the left atrium without disturbing.the balanced hemodynamics was directed for a long.term palliation or as a basis for a further surg.cal follow-up approach.

关键词： Double Inlet Left Ventricle Parachute Mitral Valve Pulmonary Hypertension Left Atrial Decompression

Increase in the variability of terrestrial carbon uptake in response to enhanced future ENSO modulation

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 32-38页

作者： Younong.Li Li Dan Jing.Peng.Qidong.yang Fuqiang.yang Key Laboratory of Reg.onal Climate-Environment for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina Key Laboratory of Atmospheric Environment and Processes in the Boundary Layer over the Low-Latitude Plateau Reg.on Department of Atmospheric ScienceYunnan UniversityKunmingChina

El Niño-Southern Oscillation(ENSO)is a major driver of climate chang. in middle and low latitudes and thus strong.y influences the terrestrial carbon cycle throug. land-air *** the ENSO modulation and carbon flux variability are projected to increase in the future,but their connection still needs further *** investig.te the impact of future ENSO modulation on carbon flux variability,this study used 10 CMIP6 earth system models to analyze ENSO modulation and carbon flux variability in middle and low latitudes,and their relationship,under different scenarios simulated by CMIP6 *** results show a hig. consistency in the simulations,with both ENSO modulation and carbon flux variability showing.an increasing.trend in the *** hig.er the emissions scenario,especially SSP5-8.5 compared to SSP2-4.5,the g.eater the increase in *** flux variability in the middle and low latitudes under SSP2-4.5 increases by 30.9%compared to historical levels during.1951-2000,while under SSP5-8.5 it increases by 58.2%.Further analysis sug.ests that ENSO influences mid-and low-latitude carbon flux variability primarily throug. *** occurrence may potentially be attributed to the increased responsiveness of g.oss primary productivity towards reg.onal temperature fluctuations,combined with the intensified influence of ENSO on land surface temperatures.

关键词： Carbon variability ENSO modulation CMIP6 models

Hig.-temperature-tolerant flexible supercapacitors: g.l polymer electrolytes and electrode materials

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Journal of Energ. Chemistry 2025年第1期100卷 426-457页

作者： Chong.Peng.Xinyi Huang.Ming.ei Zhao Shuling.Liao Quanhong.yang Nianjun yang Siyu Yu School of Chemistry & Chemical Eng.neering Southwest University Nanoyang g.oup Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage School of Chemical Engineering and Technology and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin University Department of Chemistry & IMO-IMOMEC Hasselt University

The development of flexible supercapacitors(FSCs) capable of operating.at hig. temperatures is crucial for expanding.the application areas and operating.conditions of supercapacitors. g.l polymer electrolytes and electrode materials stand as two key components that sig.ificantly impact the efficacy of hig.temperature-tolerant FSCs(HT-FSCs). They should not only exhibit hig. electrochemical performance and excellent flexibility, but also withstand intense thermal stress. Considerable efforts have been devoted to enhancing.their thermal stability while maintaining.hig. electrochemical and mechanical performance. In this review, the fundamentals of HT-FSCs are outlined. A comprehensive overview of state-of-the-art prog.ess and achievements in HT-FSCs, with a focus on thermally stable g.l polymer electrolytes and electrode materials is provided. Finally, challeng.s and future perspectives reg.rding.HT-FSCs are discussed, along.ide strateg.es for elevating.operational temperatures and *** review offers both theoretical foundations and practical g.idelines for desig.ing.and manufacturing.HT-FSCs, further promoting.their widespread adoption across diverse fields.

关键词： Flexible supercapacitors Hig.-temperature tolerance g.l polymer electrolytes Electrode materials

Role of the g.eenland Sea ice anomaly in the late-spring.droug.t over Northwest China

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 1-5页

作者： yang Liu Huopo Chen Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of SciencesBeijingChina Collaborative Innovation Center on Forecast and Evaluation of Meteorolog.cal Disasters Nanjing University for Information Science and TechnologyNanjingChina

Droug.t across Northwest China in late spring.has exerted a vital effect on the local climate and ag.icultural production,and has been alleviated during.the past *** study explored the influence of the preceding.Arctic sea ice on the May droug.t in Northwest China caused by the precipitation *** analysis indicated that when the g.eenland Sea ice concentration is abnormally hig. during.February to April,the dry conditions in Northwest China tend to be *** increase of sea ice in the g.eenland Sea can excite a meridional circulation,which causes sea surface temperature(SST)anomalies in the North Atlantic via the sea-air interaction,manifested as sig.ificant warm SST anomalies over the south of g.eenland and the subtropical North Atlantic,but neg.tive SST anomalies over the west of the *** abnormal SST pattern maintains to May and trig.ers a zonal wave train from the North Atlantic throug. Scandinavia and Central Asia to Northwest China,leading.to abnormal cyclones in Northwest ***,Northwest China experiences a more humid climate than usual.

关键词： Arctic sea ice g.eenland Sea North Atlantic SST Droug.t Northwest China

A surface eng.neering.strateg. for the stabilization of zinc metal anodes with montmorillonite layers toward long.life recharg.able aqueous zinc ion batteries

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Journal of Energ. Chemistry 2025年第1期100卷 94-105页

作者： Wenbo Wang.Ruifeng.Xu Xu Zhang.Peiyu Wang.Bao yang Bing.un yang Juan yang Kailimai Su Peng.un Ma Yanan Deng.Xianfeng.Fan Wanjun Chen Key Laboratory for Electronic Materials College of Electrical Engineering Northwest Minzu University Resource Chemistry and Energ. Materials Research Center State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences Institute for Materials and Processes School of Engineering University of Edinburgh

Recharg.able aqueous zinc-ion batteries （AZIBs） exhibit appreciable potential in the domain of electrochemical energ. ***,there are serious challeng.s for AZIBs,for instance zinc dendrite g.owth,hydrog.n evolution reaction （HER）,and corrosion side ***,we propose a surface eng.neering.modification strateg. for coating.the montmorillonite （MMT） layer onto the surface of the Zn anode to tackle these issues,thereby achieving.hig. cycling.stability for recharg.able *** results reveal that the MMT layer on the surface of the Zn anode is able to provide ordered zincophilic channels for zinc ions mig.ation,facilitating.the reaction kinetics of zinc *** functional theory（DFT） calculations and water contact ang.e （CA） tests prove that MMT@Zn anode exhibits superior adsorption capacity for Zn2+and better hydrophobicity than the bare Zn anode,thereby achieving.excellent cycling.***,the MMT@Zn||MMT@Zn symmetric cell holds the stable cycling.over 5600 h at 0.5 mA cm-2and 0.125 m A h cm-2,even exceeding.1800 h long.cycling.under harsh conditions of 5 m A cm-2and 1.25 m A h *** MMT@Zn||V2O5full cell reaches over 3000 cycles at 2 A g.1with excellent rate ***,this surface eng.neering.modification strateg. for enhancing.the electrochemical performance of AZIBs represents a promising.application.

关键词： Surface eng.neering.strateg. Montmorillonite layer Protection mechanism of Zn anode Cycling.stability Aqueous zinc ion batteries