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Simulation of Vortex convection in a compressible Viscous Flow with Dynamic Mesh Adaptation

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Advances in Applied Mathematics and Mechanics 2014年第5期6卷 590-603页

作者： c.h.Zhou Department of Aerodynamics Nanjing University of Aeronautics and AstronauticsNanjing 210016China

In this work,vortex convection is simulated using a dynamic mesh adaptation *** each adaptation period,the mesh is refined in the regions where the phenomena evolve and is coarsened in the regions where the phenomena deviate since the last adaptation.A simple indicator of mesh adaptation that accounts for the solution progression is *** generation of dynamic adaptive meshes is based on multilevel refinement/*** efficiency and accuracy of the present procedure are validated by simulating vortex convection in a uniform *** unsteady compressible turbulent flows involving blade-vortex interactions are investigated to demonstrate further the applicability of the *** results agree well with the published experimental data or numerical results.

关键词： Mesh adaptation vortex-convection blade-vortex interaction unsteady flow timedependent problem shock-vortex interaction.

helicobacter pylori infection and drugs malabsorption

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World Journal of Gastroenterology 2014年第30期20卷 10331-10337页

作者： edith Lahner camilla Virili Maria Giulia Santaguida Bruno Annibale Marco centanni Gastrointestinal Unit Department of Digestive and Liver Disease"Sapienza" University of Roma00189 RomaItaly Endocrinology Unit Department of Medico-Surgical Sciences and Biotechnologies"Sapienza" University of Roma04100 LatinaItaly

Drug absorption represents an important factor affecting the efficacy of oral drug *** secretion and motility seem to be critical for drug absorption.A causal relationship between impaired absorption of orally administered drugs and helicobacter pylori(***)infection has been *** have been reported between poor bioavailability of l-thyroxine and l-dopa and *** *** to the Maastricht Florence consensus Report on the management of *** infection,*** treatment improves the bioavailability of both these drugs,whereas the direct clinical benefits to patients still await to be *** strong seems the association between *** infection and other drugs malabsorption,such as delavirdine and *** exact mechanisms forming the basis of the relationship between *** infection and impaired drugs absorption and/or bioavailability are not fully *** infection may trigger a chronic inflammation of the gastric mucosa,and impaired gastric acid secretion often *** reduction of acid secretion closely relates with the wideness and the severity of the damage and may affect drug *** minireview focuses on the evidence of *** infection associated with impaired drug absorption.

关键词： Drug malabsorption helicobacter pylori gastritis Gastric hypoacidity Thyroxine treatment Thyroxine malabsorption human immunodeficiency virus Delavirdine L-dopa Parkinson's disease Ketaconazole

combustion synthesis, characterization and luminescence properties of barium aluminate phosphor

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Journal of Rare Earths 2014年第9期32卷 806-811页

作者： A.h. Wako F.B Dejene h.c Swart Department of Physics University of the Free State (Qwaqwa Campus) Department of Physics University of the Free State

The blue-green emitting Eu2＋ and Nd3＋ doped polycrystalline barium aluminate （BaAI204：Eu2＋,Nd3＋） phosphor, was prepared by a solution-combustion method at 500 ℃without a post-annealing process. The characteristic variation in the structural and luminescence properties of the as-prepared samples was evaluated with regards to a change in the Ba/A1 molar ratio from 0.1：1 to 1.4：1. The morphologies and the phase structures of the products were characterized by scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffraction （XRD） and X-ray photoelectron spectroscopy （XPS）, while the optical properties were investigated using ultra-violet （UV） and photoluminescence （PL） spectroscopy, respectively. The XRD and TEM results revealed that the average crystallite size of the BaAl2O4：Eu2＋,Nd3＋ phosphor was about 70 urn. The broad-band UV-excited luminescence of the phosphors was observed at 2max=500 um due to transitions from the 4f^65d1 to the 4f7 configuration of the Eu2＋ ion. The PL results indicated that the main peaks in the emission and excitation spectrum of phosphor particles slightly shifted to the short wavelength due to the changes in the crystal field due to the structure changes caused by the variation in the quantity of the Ba ions in the host lattice.

关键词： BaAl2O4:Eu2+,Nd3+ persistence luminescence Eu2+ and Nd3+ doping rare earths

cRAZY OR NOT Will crazy Rich Asians' Success Translate in china?

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城市漫步（上海版、英文） 2018年第12期 10-11页

作者： Dominic ngai 不详

Adapted from Kevin Kwan's 2013 novel of the same name,crazy Rich Asians was this summer's surprise box ofice smash hit in North America,earning praises for being the first hllwood studio production to feature a predominantly Asian cast since 1993's Joy Luck club Just two months after its debut,the fim alreadly became the US's top grossing romantic comedy in a decade(sixth highest of all time).cashing in nearlyUSD174 million domestically as of mid *** the film gears up for its theatrical release on the chinese mainland,we speak with a couple of chinese pop culture and history experts about the impact crazy Rich Asianshas had in the *** whether that will translate to audiences in china.

关键词： mainland Asian translate

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TAKE A PUFF

城市漫步（上海版、英文） 2019年第1期 20-21页

作者： Dominic ngai 不详

cne And cnly 11 Quirky Gifts for Your Single Friends compiled

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城市漫步（GBA版） 2018年第11期 20-21页

作者： Dominic ngai 不详

Singles'Day has in recent years become another excuse to shop online in china,butto honor the origins of this special day,here are a few funny gift ideas for your single and

关键词： origin honor friends

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Shanghai Wearabouts

城市漫步（上海版、英文） 2017年第6期 24-25页

作者： Dominie ngai 不详

Each month,we scour the streets of Shanghai to moot with some of the moststylish people in town and see what they’re wearing.

关键词： scour street Wear

IN hER OPINION Fashion KOL Tera Feng on What Life ls Like for an Online Influencer in china

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城市漫步（GBA版） 2019年第3期 24-25页

作者： Dominic ngai 不详

In the two years since we first met her in late 2016,Tera Feng s career as a fashion KOL has taken off and the Shanghai based infuencer now commands a fllwing of 100,000 on Weibo,and counts brands like ShANG XIA,Ms Min,Marni and ZUcZUG as her frequent *** before she flew off to Milan and Paris for another round of Fashion Week festivities,we caught up with her again to see what her life is like nowadays.

关键词： Just KOL fashion

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.

关键词： Kinetic energy