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Fifth-Order A-WENO Schemes Based on the Adaptive Diffusion Central-Upwind Rankine-Hugoniot Fluxes

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Communications on Applied Mathematics and Computation 2023年第1期5卷 295-314页

作者： bao-shan wang Wai Sun Don Alexander Kurganov Yongle Liu School of Mathematical Sciences Ocean University of ChinaQingdao 266100ShandongChina Department of Mathematics SUSTech International Center for Mathematics and Guangdong Provincial Key Laboratory of Computational Science and Material DesignSouthern University of Science and TechnologyShenzhen 518055GuangdongChina Department of Mathematics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Department of Mathematics Southern University of Science and TechnologyShenzhen 518055GuangdongChina

We construct new fifth-order alternative WENO(A-WENO)schemes for the Euler equations of gas *** new scheme is based on a new adaptive diffusion centralupwind Rankine-Hugoniot(CURH)numerical *** CURH numerical fluxes have been recently proposed in[Garg et al.J Comput Phys 428,2021]in the context of secondorder semi-discrete finite-volume *** proposed adaptive diffusion CURH flux contains a smaller amount of numerical dissipation compared with the adaptive diffusion central numerical flux,which was also developed with the help of the discrete RankineHugoniot conditions and used in the fifth-order A-WENO scheme recently introduced in[wang et *** J Sci Comput 42,2020].As in that work,we here use the fifth-order characteristic-wise WENO-Z interpolations to evaluate the fifth-order point values required by the numerical *** resulting one-and two-dimensional schemes are tested on a number of numerical examples,which clearly demonstrate that the new schemes outperform the existing fifth-order A-WENO schemes without compromising the robustness.

关键词： A-WENO schemes Central-upwind schemes Discrete Rankine-Hugoniot conditions Numerical dissipation switch Local speeds of propagation Euler equations of gas dynamics

Studies on the Kinetics of the FO+CO Reaction

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Chinese Chemical Letters 1998年第9期9卷 863-866页

作者： bao shan wang Hua HOU Yue Shu GU(Department of Chemistry, shandong University, Jinan 250100) Department of Chemistry Shandong University Jinan 250100 China

Two competitive channels of the reaction of FO with CO were calculated by the TST-RRKM theory and the classical transition state theory, respectively. The results show that thedirect channel dominates the reaction over the entire studied temperature range and the addition-elimination channel has important contributions at low temperatures. The cited reaction does notinfluence the fluorine regeneration and the sink of CO in the stratosphere.

关键词： ab initio kinetic calculation RRKM

Theoretical Study of the Thermal Decomposition of Chlorofluoromethanol (CHClFOH)

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Chinese Chemical Letters 2000年第10期11卷 891-892页

作者： Shao Kun wang Hua HOU Qing Zhu ZHANG Chun Yan KONG bao shan wang Yue Shu Gu School of Chemistry Shandong UniversityJinan 250100 Department of Chemistry Dezhou Normal special schoolDezhou 253023

A complete potential energy surface for the CHClFOH system was calculated at the G3(MP2) level. The calculations reveal that the four-center 1,2-HX (X = F, Cl) elimination mechanism rather than the bond scission mechanism dominate decomposition of CHClFOH. The results are valuable to understand the atmospheric chemistry of HCFC-31.

关键词： chlorofluoromethanol reaction mechanism potential energy surface

Non-Intrusive Reduced OrderModeling of Convection Dominated Flows Using Artificial NeuralNetworkswithApplication to Rayleigh-Taylor Instability

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Communications in Computational Physics 2021年第6期30卷 97-123页

作者： Zhen Gao Qi Liu Jan S.Hesthaven bao-shan wang Wai Sun Don Xiao Wen School of Mathematical Sciences Ocean University of ChinaQingdaoChina Mathematics Institute of Computational Science and Engineering ´Ecole Polytechnique F´ed´erale de LausanneLausanneSwitzerland College of Mathematics and Systems Science Shandong University of Science and TechnologyQingdaoChina

.A non-intrusive reduced order model(ROM)that combines a proper orthogonal decomposition(POD)and an artificial neural network(ANN)is primarily studied to investigate the applicability of the proposed ROM in recovering the solutions with shocks and strong gradients accurately and resolving fine-scale structures efficiently for hyperbolic conservation *** accuracy is demonstrated by solving a high-dimensional parametrized ODE and the one-dimensional viscous Burgers’equation with a parameterized diffusion *** two-dimensional singlemode Rayleigh-Taylor instability(RTI),where the amplitude of the small perturbation and time are considered as free parameters,is also *** adaptive sampling method in time during the linear regime of the RTI is designed to reduce the number of snapshots required for POD and the training of *** extensive numerical results show that the ROM can achieve an acceptable accuracy with improved efficiency in comparison with the standard full order method.

关键词： Rayleigh-Taylor instability non-intrusive reduced basis method proper orthogonal decomposition artificial neural network adaptive sampling method

Progress in mechanism of salt excretion in recretohalopytes

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Frontiers in Biology 2010年第2期5卷 164-170页

作者： Feng DING Jian-Chao YANG Fang YUAN bao-shan wang Key Lab of Plant Stress Research College of Life ScienceShandong Normal UniversityJinan 250014China

The recretohalophyte with specialized saltsecreting structures including salt glands and salt bladders can secrete salt from their bodies and easily adapt themselves to many kinds of salt *** glands and salt bladders,arose from dermatogen cells,are excretory organs specially adapted for dealing with ionic homeostasis in the cells of *** main function of salt glands or salt bladders is to secrete excess ions that invade the *** structures of salt glands or salt bladders differ among plant *** addition to structural differences,salt glands also differ in their secretion *** this review,we mainly focus on recent progress in the mechanism of salt excretion of salt glands and salt bladders,and in particular,emphasize the vesicle-mediated secretion systems from the vacuole to the plasmalemma and the possibly involved membrane-bound translocating proteins for salt secretion of plant gland secretory cell.

关键词： mechanism salt excretion recretohalopytes salt bladders salt glands

New steelmaking process based on clean deoxidation technology

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International Journal of Minerals,Metallurgy and Materials 2024年第6期31卷 1249-1262页

作者： Zhongliang wang Yanping bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

After the converter steelmaking process,a considerable number of ferroalloys are needed to remove dissolved oxygen from the molten steel,but it also forms a lot of oxide inclusions that cannot be completely *** the same time,it increases the carbon emis-sions in the steel production *** years of research,our team have developed a series of clean deoxidation technologies,includ-ing carbon deoxidation,hydrogen deoxidation,and waste plastic deoxidation of molten steel to address the aforementioned *** this study,thermodynamic calculations and laboratory experiments were employed to verify that carbon and hydrogen can reduce the total oxygen content in the molten steel melt to below 5×10^(-6) and 10×10^(-6),*** analysis of the deoxidation mechanisms and ef-fects of polyethylene and polypropylene was also *** addition,the applications of carbon deoxidation technology in different steels with the hot-state experiment and industrial production were discussed *** carbon deoxidation experimental results of different steels were as follows:(1)the oxygen content of bearing steel was effectively controlled at 6.3×10^(-6) and the inclusion number density was lowered by 74.73%compared to aluminum deoxidized bearing steel;(2)the oxygen content in gear steel was reduced to 7.7×10^(-6) and a 54.49%reduction of inclusion number density was achieved with almost no inclusions larger than 5μm from the average level of industry gear steels;(3)a total oxygen content of M2 high-speed steel was as low as 3.7×10^(-6).In industrial production practice,car-bon deoxidation technique was applied in the final deoxidation stage for non-aluminum deoxidized bearing steel,and it yielded excellent results that the oxygen content was reduced to below 8×10^(-6) and the oxide inclusions in the steel mainly consist of silicates,along with small amounts of spinel and calcium aluminate.

关键词： clean deoxidation carbon deoxidation hydrogen deoxidation waste plastics deoxidation

Development and prospects of molten steel deoxidation in steelmaking process

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International Journal of Minerals,Metallurgy and Materials 2024年第1期31卷 18-32页

作者： Zhongliang wang Yanping bao State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

In the long traditional process of steelmaking,excess oxygen is blown into the converter,and alloying elements are used for *** inevitably results in excessive deoxidation of products remaining within the steel liquid,affecting the cleanliness of the *** the increasing requirements for steel performance,reducing the oxygen content in the steel liquid and ensuring its high cleanliness is *** more than a hundred years of development,the total oxygen content in steel has been reduced from approximately 100×10^(-6)to approximately 10×10^(-6),and it can be controlled below 5×10^(-6)in some steel grades.A relatively stable and mature deoxidation technology has been formed,but further reducing the oxygen content in steel is no longer significant for improving steel *** research team developed a deoxidation technology for bearing steel by optimizing the entire conventional *** technology combines silicon–manganese predeoxidation,ladle furnace diffusion deoxidation,and vacuum final *** successfully conducted industrial experiments and produced interstitial-free steel with natural decarbonization ***-aluminum deoxidation was found to control the oxygen content in bearing steel to between 4×10^(-6) and 8×10^(-6),altering the type of inclusions,eliminating large particle Ds-type inclusions,improving the flowability of the steel liquid,and deriving a higher fatigue *** natural decarbonization predeoxidation of interstitial-free steel reduced aluminum consumption and production costs and significantly improved the quality of cast billets.

关键词： steel deoxidation deoxidizer metallurgical equipment bearing steel IF steel

The genome of the recretohalophyte Limonium bicolor provides insights into salt gland development and salinity adaptation during terrestrial evolution

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Molecular Plant 2022年第6期15卷 1024-1044页

作者： Fang Yuan Xi wang Boqing Zhao Xiaojing Xu Miao Shi Bingying Leng Xinxiu Dong Chaoxia Lu Zhongtao Feng Jianrong Guo Guoliang Han Haikuan Zhang Jianwei Huang Min Chen bao-shan wang shandong Provincial Key Laboratory of Plant Stress College of Life SciencesShandong Normal UniversityJi’nanShandongChina Berry Genomics Corporation BeijingChina

Halophytes have evolved specialized strategies to cope with high *** extreme halophyte sea lavender(Limonium bicolor)lacks trichomes but possesses salt glands on its epidermis that can excrete harmful ions,such as sodium,to avoid salt ***,we report a high-quality,2.92-Gb,chromosome-scale *** genome assembly based on a combination of Illumina short reads,single-molecule,real-time long reads,chromosome conformation capture(Hi-C)data,and Bionano genome maps,greatly enriching the genomic information on recretohalophytes with multicellular salt *** the *** genome contains genes that show similarity to trichome fate genes from Arabidopsis thaliana,it lacks homologs of the decision fate genes GLABRA3,ENHANCER OF GLABRA3,GLABRA2,TRANSPARENT TESTA GLABRA2,and SIAMESE,providing a molecular explanation for the absence of trichomes in this *** identified key genes(LbHLH and LbTTG1)controlling salt gland development among classical trichome homologous genes and confirmed their roles by showing that their mutations markedly disrupted salt gland initiation,salt secretion,and salt tolerance,thus offering genetic support for the long-standing hypothesis that salt glands and trichomes may share a common *** addition,a whole-genome duplication event occurred in the *** genome after its divergence from Tartary buckwheat and may have contributed to its adaptation to high *** *** genome resource and genetic evidence reported in this study provide profound insights into plant salt tolerance mechanisms that may facilitate the engineering of salt-tolerant crops.

关键词： development evolution genome Limonium bicolor salinity adaptation salt gland

Supramolecular assembly nanoparticle for trans-epithelial treatment of keratoconus

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Chinese Chemical Letters 2024年第10期35卷 1-3页

作者： Wenlong Li Feishi shan Qingdong bao Qinghua Li Hua Gao Leyong wang State Key Laboratory Cultivation Base Shandong Provincial Key Laboratory of OphthalmologyEye Institute of Shandong First Medical UniversityQingdao266071China Eye Hospital of Shandong First Medical UniversityJi'nan 250021China College of Ophthalmology Shandong First Medical UniversityJi'nan 250000China Key Laboratory of Mesoscopic Chemistry of MOE Jiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China State Key Laboratory Cultivation Base Shandong Provincial Key Laboratory of OphthalmologyEye Institute of Shandong First Medical UniversityQingdao 266071Chin Eye Hospital of shandong First Medical University Ji'nan 250021China

Keratoconus is a clinically prevalent corneal ectasia,characterized by progressive thinning and conical protrusion of the central cornea[1].With an incidence rate of one in every 400 to 2000 individuals,it stands as a leading cause of blindness among the *** date,there are no pharmacological interventions available for the treatment of *** advanced cases culminating in blindness,corneal transplantation remains the only restorative ***,this surgical procedure carries risks of immune rejection and chronic graft failure.

关键词： corneal treatment graft