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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

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

Plant Pb Contents in Elevation Zones of the Changbai Mountain National Nature Reserve, China

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Pedosphere 2007年第2期17卷 229-234页

作者： BAI Jun-Hong CUI bao-shan DENG Wei wang Qing-Gai DING Qiu-Yi State Key Lab of Water Environment Simulation School of Environment Beijng Normal University 19 Xinjiekouwai Road Haidian District Beijing 100101 （China）. Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu 610051 （China） Appraisal Center of Environment and Engineering State Environment Protection Administration of China Beijing 100012 （China）

Typical plants and soils of four elevation zones, mountain tundra （Zone A）, Betula ermanii forest （Zone B）, mountain dark coniferous forest （Zone C）, and mountain coniferous and broad-leaf forest （Zone D）, along the vertical gradient of the northern mountain slope of the Changbai Mountain National Nature Reserve, Jilin Province, China, were sampled to study the relationship between plant and soil Pb, and to compare the Pb levels in typical plant types within the same elevation zone. The Pb contents in the soil and plant samples were measured by using a flame atomic absorption spectrophotometer. The results showed that the average plant Pb contents of the four plant elevation zones were lower than the average worldwide level, except for Zone B. Compared with the average level in China or the average worldwide level, the soil Pb levels of the four plant zones were higher, with Zones D and B having the lowest and highest averages, respectively. Plant Pb levels fluctuated from the upper to the lower zones, in a pattern of low-high-low-high, which was the same as that of the soils in the four zones. Furthermore, plant Pb was closely related to soil Pb. Depending on the plant species and plant parts, large differences were found in the Pb levels of typical plants within each zone. In Zone A, Vaccinium uliginosum and Rhododendron redowskianum had higher Pb levels than the other plants. In Zone C, the Pb levels in the branches of both plant species were higher than those in the leaves, which was contrary to Zone D. In Zone B, the Pb levels in the plant parts varied greatly with plant species.

关键词： elevation zone plant Pb Pb uptake soil Pb typical plants

Investigation and mitigation of Mott neuronal oscillation fluctuation in spiking neural network

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Science China(Information Sciences) 2024年第2期67卷 291-301页

作者： Lindong WU Zongwei wang Lin bao Linbo shan Zhizhen YU Yunfan YANG Shuangjie ZHANG Guandong BAI Cuimei wang John ROBERTSON Yuan wang Yimao CAI Ru HUANG School of Integrated Circuits Peking University Beijing Advanced Innovation Center for Integrated Circuits State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Department of Engineering University of Cambridge

Mott devices, featuring low hardware cost and high energy efficiency, have been demonstrated as a key oscillatory element in artificial neurons to enable spiking neural networks(SNNs) such as conversionbased SNNs(CSNNs). However, there will be inevitably non-ideal fluctuation in the oscillation behavior,causing the accuracy degradation of networks. In this paper, we investigate the Mott neuronal oscillation fluctuation(NOF) through experiments and modeling. The results show that the NOF phenomenon conforms to Gaussian distribution and originates from thermal fluctuation induced switching voltage variations. We construct a two-layer CSNN for image recognition tasks to study the NOF effect and propose the activation function boundary(AFB) method to strengthen the stability of the network. The results indicate that AFB can improve the accuracy of CSNN by up to 15.5% by tightening output distribution.

关键词： Mott neuron oscillation fluctuation variation-aware Mott neuronal model conversion-based spiking neural network activation function boundary