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Numerical Analysis of the Nonlinear Parameterization of Waves in Currents over a Submerged Sill with a Non-Hydrostatic Model

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Journal of Ocean University of China 2017年第4期16卷 689-696页

作者： ma Xlaozhou ma yuxiang GAO Yunpeng DONG Guohai State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 P. R. China

An investigation of the effects of a uniform current strength direction(following or opposing wave propagation) on the nonlinear transformation of irregular waves over a submerged trapezoidal sill is carried out using SWASH,a non-hydrostatic numerical wave *** nonlinear parameters(i.e.,asymmetry,skewness,and kurtosis) are calculated,and the empirical formulas for these parameters are presented as a function of the local Ursell number based on the present numerical data *** the shoaling area of the submerged sill,the nonlinear characteristics of waves are more obvious when waves propagate in the same direction as the currents than when waves propagate in the opposite *** nonlinear parameters grow with the strengthening of the following currents over the crest,they tend to decrease as the adverse current velocity increases over the crest area of the submerged sill.

关键词： wave-current interaction shallow water nonlinear characteristic parameters non-hydrostatic water-current model

Numerical investigation of ocean waves generated by three typhoons in offshore China

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Acta Oceanologica Sinica 2021年第12期40卷 125-134页

作者： Qing Shi Jun Tang Yongming Shen yuxiang ma State Key Laboratory of Coastal and Offshore Engineering Dalian University of TechnologyDalian 116024China Key Laboratory for City Cluster Environmental Safety and Green Development of the Ministry of Education Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China Southern marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Guangzhou 510006China

The influences of the three types of reanalysis wind fields on the simulation of three typhoon waves occurred in2015 in offshore China were numerically *** typhoon wave model was based on the simulating waves nearshore model(SWAN),in which the wind fields for driving waves were derived from the European Centre for Medium-Range Weather Forecasts(ECMWF)Re-Analysis-Interim(ERA-interim),the National Centers for Environmental Prediction climate forecast system version 2(CFSv2)and cross-calibrated multi-platform(CCMP)***,the typhoon waves generated during the occurrence of typhoons Chan-hom(1509),Linfa(1510)and Nangka(1511)in 2015 were simulated by using the wave model driven by ERA-interim,CFSv2 and CCMP *** numerical results were validated using buoy data and satellite observation data,and the simulation results under the three types of wind fields were in good agreement with the observed *** numerical results showed that the CCMP wind data was the best in simulating waves overall,and the wind speeds pertaining to ERA-Interim and CCMP were notably smaller than those observed near the typhoon *** correct the accuracy of the wind fields,the Holland theoretical wind model was used to revise and optimize the wind speed pertaining to the CCMP near the typhoon *** results indicated that the CCMP wind-driven SWAN model could appropriately simulate the typhoon waves generated by three typhoons in offshore China,and the use of the CCMP/Holland blended wind field could effectively improve the accuracy of typhoon wave simulations.

关键词： SWAN blended wind fields typhoon waves three typhoons Chan-hom Linfa Nangka

Interactions of Two Identical Wave Trains with a Relative Separation Angle of 24?

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Journal of Ocean University of China 2017年第4期16卷 683-688页

作者： ma yuxiang LIU Dianyong LIU Wei DONG Guohai PERLIN marc State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Naval Architecture and marine Engineering University of Michigan

Interactions between two identical monochromatic wave trains with a relative separation angle of 24? were experimentally investigated in a well-designed ‘X' *** trains with different amplitudes and frequencies were *** results demonstrated that the interaction was strongly dependent on both wave amplitude and *** nonbreaking and lower-frequency cases,the wave trains can approximately reestablish their initial state following the ***,for larger waves,the interaction was enhanced,distorting the surfaces significantly-the wave trains were no longer two-dimensional after the *** the interaction process,there was an obvious increase in wave height,reaching a maximum amplification in the middle of the interaction region that was approximately 1.55 times the initial ***,the images captured by high-speed cameras illustrated that two wave trains entered the interaction region at the same time and then merged during the interaction process,resulting in an increase in wave *** combined wave crest was initially composed of two straight segments with a relative angle of 24? and gradually morphed into a single segment as is evident in the plan *** wave then broke in the downstream,still within the interaction region,exhibiting a crescent pattern along the crest.

关键词： wave-wave interactions wave breaking bidirectional propagation

Cellulose-Based Films for Food Packaging Applications:Review of Preparation,Properties,and Prospects

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Journal of Renewable materials 2023年第8期11卷 3203-3225页

作者： Xiaoyan Liu Zhao Qin yuxiang ma Huamin Liu Xuede Wang College of Food Science and Engineering Henan University of TechnologyZhengzhou450001China Institute of Special Oilseed Processing and Technology Henan University of TechnologyZhengzhou450001China

Packaging is a food preservation technology widely used in the ***-sourced,biodegradable polymers are becoming increasingly popular in the food packaging ***ﬁlms prepared using cellulose as raw material would contribute to resource sustainability,but the difﬁculty of cellulose solubilization limits their further *** view of this,a series of novel solvent systems(LiCl/Dmac,ILs,TBAH/DMSO,NMMO,alkali/urea solutions,metal-complex solutions)were used to prepare high-strength and high-performance cellulose-basedﬁlms;their characteristics and the mechanisms involved were ***ﬁlms prepared by blending cellulose with various polymers(synthetic polymers,natural polymers,proteins and enzymes,metal particles,and plant phenols)and their functional properties were also *** with cellulose-basedﬁlms and the outlook for future research are *** is hoped that in the near future high-performance,biodegradable and sustainably-produced cellulose-basedﬁlms will lead the food packaging industry into a new era and further promote the sustainable use of resources.

关键词： Cellulose packaging ﬁlms barrier polymers

Synthesis of MOR/SAPO-11 Composite Molecular Sieve via Seed Crystallization for n-Alkane Hydroisomerization

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China Petroleum Processing & Petrochemical Technology 2019年第2期21卷 58-66页

作者： Sun Na Wang Haiyan ma yuxiang Yang Zhanxu Kang Lei College of Chemical Engineering China University of Petroleum Qingdao 266580 School of Chemistry and materials Science Liaoning Shihua University Fushun 113001

n-Alkane isomerization is a critical reaction that can affect parameters in oil refining, such as the gasoline octane number and diesel oil solidifying point. In this study, a catalyst support, mordenite (MOR)/silicoaluminophosphate (SAPO)-11 composite zeolite with core/shell structure, was synthesized by hydrothermal method with MOR acting as the seed for crystallization. The crystal structure, elemental composition, surface area, pore volume, and acidity of the catalyst was thoroughly characterized. In addition, the catalytic performance of the as-obtained Pt/MOR/SAPO-11 in the hydroisomerization of n-dodecane was tested. The results indicated that the properties and catalytic performance of the composite molecular sieve were quite different from those of the pure zeolites and physical mixture of MOR and SAPO-11 (MOR+SAPO-11). Compared with the physical mixture, MOR and SAPO-11 were more tightly bound in MOR/SAPO-11 because of chemical bonding. Moreover, the acidity and pore structure were favorable to the catalytic hydroisomerization of n-dodecane. Pt/MOR/SAPO-11 exhibited higher isomerization activity than the Pt-loaded pristine MOR and MOR+SAPO-11. Thus, the core-shell composite molecular sieve has promising industrial applications as the catalyst support.

关键词： composite zeolite core-shell structure MOR SAPO-11 hydroisomerization

A CENTRAL-STAGE BUFFERED THREE-STAGE CLOS SWITCHING FABRIC AND THE SCHEDULING ALGORITHM

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Journal of Electronics(China) 2009年第1期26卷 113-119页

作者： Hu yuxiang ma Xiangjie Lan Julong Wang Haoxue National Digital Switching System Engineering ＆ Technological R＆D Center Zhengzhou 450002 China

Current MSM switching fabric has poor performance under unbalanced traffic. This paper presents an alternative, novel Central-stage Buffered Three-stage Clos switching (CB-3Clos) fabric and proves that this fabric can emulate output queuing switch without any speedup. By analyzing the condition to satisfy the central-stage load-balance, this paper also proposes a Central-stage Load-balanced-based Distributed Scheduling algorithm (CLDS) for CB-3Clos. The results show that, compared with Concurrent Round-Robin based Dispatching (CRRD) algorithm based on MSM, CLDS algorithm has high throughput irrespective with the traffic model and better performance in mean packet delay.

关键词： Three-stage Clos switching fabric Central-stage buffered Distributed scheduling Loadbalance

Cellulose derived biochar:Preparation,characterization and Benzo[α]pyrene adsorption capacity

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Grain & Oil Science and Technology 2021年第4期4卷 182-190页

作者： Qiaoli Yang Yanxia Sun Wenhui Sun Zhao Qin Huamin Liu yuxiang ma Xuede Wang College of Food Science and Engineering Henan University of TechnologyZhengzhou 450001China

Edible oil is prone to be contaminated by Benzo[a]pyrene(BaP)during production and *** is an important technology for the removal of BaP from edible oil,and biochar as a new type of adsorbent for the treatment BaP has received extensive *** this study,we prepared unmodified biochar and ZnCl_(2)-modified biochar from sesame straw cellulose(SSB and SSZ)and sesame capsule cellulose(SCB and SCZ),carried out structure characterization by Fourier Transform Infrared(FT-IR),Brunauer-Emmett-Teller(BET)and Scanning Electron Microscope(SEM),and finally evaluated their potential effectiveness in BaP removal from sesame ***-IR results revealed that SSZ and SCZ showed higher peak intensities,indicating that they could provide more active sites for *** results of XRD presented that SSZ and SCZ had a higher graphitization degree than the unmodified *** results showed that the SSZ and SCZ had more complex pore structure,which is beneficial to *** analysis results showed that SSZ and SCZ had a higher specific surface area of 1622.83-1797.39 m^(2)/g and a better developed porous structure(the total pore volume Vtotal was 0.9434-1.0023 cm^(3)/g)than the SSB and SCB(specific surface area was 350.55-352.59 m^(2)/g,and Vtotal was 0.1907-0.1918 cm^(3)/g),indicating that modification promoted the formation of porous structure and thus improved the adsorption capacity of *** experiments confirmed once again that the BaP removal rates of SSZ and SCZ(92.67%-96.13%)were much higher than that of unmodified biochar(3.34%-4.28%),and the BaP content in the sesame oil treated by SSZ and SCZ were far below the current EU maximum levels(2μg/kg).Therefore,the modified biochar from cellulose is a promising adsorbent for BaP *** future studies,the influences of bichar on the nutritional quality of edible oil should be taken into consideration so as to find an ideal active carbon substitute for BaP removal in edible oil.

关键词： Biochar Cellulose Adsorption BaP Sesame oil

The Up-rising of the Inner Mongolia's Heavy Truck Base

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中国汽车（英文版） 1998年第3期 14-15页

作者： ma yuxiang

During the "8th Five-Year Plan" of China, Baotou North Heavy Truck Limited Liability Company and Baotou North-Benz Heavy Truck Limited Liability Company growing out of two big military plants——No. 1 machinery Plant ... 详细信息

关键词： The Up-rising of the Inner Mongolia’s Heavy Truck Base

The ACTIVE study protocol:apatinib or placebo plus gefitinib as first-line treatment for patients with EGFR-mutant advanced non-small cell lung cancer(CTONG1706)

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Cancer Communications 2019年第1期39卷 607-614页

作者： Zhonghan Zhang Fan Luo Yang Zhang yuxiang ma Shaodong Hong Yunpeng Yang Wenfeng Fang Yan Huang Li Zhang Hongyun Zhao State Key Laboratory of Oncology in South China Collaborative Innovation Center for Cancer MedicineGuangzhou 510060GuangdongP.R.China Department of Medical Oncology Sun Yat-sen University Cancer Center651 Dongfeng Road EastGuangzhou 510060GuangdongP.R.China Department of Clinical Research Sun Yat-sen University Cancer Center651 Dongfeng Road EastGuangzhou 510060GuangdongP.R.China

Background:Gefitinib,as the first epidermal growth factor receptor tyrosine kinase inhibitors(EGFR-TKI)approved for the treatment of advanced non-small cell lung cancer(NSCLC),has been proved to significantly improve the progression-free survival(PFS)in the first-line setting but suffers from resistance 7-10 months after treatment ***(YN968D1),a potent vascular endothelial growth factor receptor(VEGFR)2-TKI,specifically binds to VEGFR2 and leads to anti-angiogenetic and anti-neoplastic *** inhibition of VEGFR and EGFR path-ways represents a rational approach to improve treatment responses and delay the onset of treatment resistance in EGFR-mutant *** ACTIVE study aims to assess the combination of apatinib and gefitinib as a new treatment approach for EGFR-mutant NSCLC as a first-line ***:This multicenter,randomized,double-blind,placebo-controlled phase III study(NCT02824458)has been designed to assess the efficacy and safety of apatinib or placebo combined with gefitinib as a first-line treatment for patients with EGFR-mutant advanced NSCLC.A total of 310 patients with EGFR-mutation(19del or 21L858R),pathological stage IIIB to IV non-squamous NSCLC were to be *** primary endpoint is investigator assessment of PFS,and the secondary endpoints include independent radiological central(IRC)-confirmed PFS,overall survival(OS),objective response rate(ORR),disease control rate(DCR),time to progressive disease(TTPD),duration of response(DoR),quality of life(QoL)and *** patients are randomized in a 1:1 ratio to receive gefitinib(250 mg,p.o.q.d.)plus apatinib(500 mg,p.o.q.d.)or gefitinib plus placebo,given until disease progression or intolerable adverse *** biomarker analysis will be *** study is being conducted across China and comprises of 30 participating *** commenced in August 2017 and finished in December 2018,most of the patients are in the follow-up ***

关键词： NSCLC EGFR VEGFR Tyrosine kinase inhibitors Apatinib Gefitinib Randomized Double-blind Placebo Phase III