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30篇 您的检索式:作者名="Qiulin Wang"
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1Effect of pitch angle on initial stage of a transport airplane ditching显示文摘Airworthiness regulations require that the transport airplane should be proved to ensure the survivability of the ditching for the passengers. The planned ditching of a transport airplane on the calm water is numerically simulated. The effect of pitch angle on the impact characteristics is especially investigated by a subscaled model. The Reynolds-averaged Navier-Stokes (RANS) equations of unsteady compressible flow are solved and the realizable j-e equations are employed to model the turbulence. The transformation of the air-water interface is tracked by volume of fluid (VOF) model. The motion of the rigid body is modeled by dynamic mesh method. The initial ditching stage of the transport airplane is analyzed in detail. The numerical results show that as the pitching angle increases, the maximal normal force decreases and the pitching motion becomes much gentler. The aft fuselage would be sucked down by the water and lead to pitching up, whereas the low horizontal tail prevents this trend. Consequently, the transport aircraft with low horizontal tail should ditch on the water at an angle between 10 and 12 as a recommendation.Guo Baodong Liu Peiqing Qu Qiulin Wang Jiawen 2013Chinese Journal of Aeronautics2013,26,1:18
2Multifunctional roles of carbon-based hosts for Li-metal anodes:A review显示文摘With its high theoretical capacity,lithium(Li)metal is recognized as the most potential anode for realizing a high-performance energy storage system.A series of questions(severe safety hazard,low Coulombic efficiency,short lifetime,etc.)induced by uncontrollable dendrites growth,unstable solid electrolyte interface layer,and large volume change,make practical application of Li-metal anodes still a threshold.Due to their highly appealing properties,carbon-based materials as hosts to composite with Li metal have been passionately investigated for improving the performance of Li-metal batteries.This review displays an overview of the critical role of carbon-based hosts for improving the comprehensive performance of Li-metal anodes.Based on correlated mainstream models,the main failure mechanism of Li-metal anodes is introduced.The advantages and strategies of carbon-based hosts to address the corresponding challenges are generalized.The unique function,existing limitation,and recent research progress of key carbon-based host materials for Li-metal anodes are reviewed.Finally,a conclusion and an outlook for future research of carbon-based hosts are presented.This review is dedicated to summarizing the advances of carbon-based materials hosts in recent years and providing a reference for the further development of carbonbased hosts for advanced Li-metal anodes.Xiaolin Yan Liang Lin Qiulin Chen Qingshui Xie Baihua Qu Laisen Wang Dong-Liang Peng 2021Carbon Energy2021,3,2:8
3Advanced hydrogels for the repair of cartilage defects and regeneration显示文摘Cartilage defects are one of the most common symptoms of osteoarthritis(OA),a degenerative disease that affects millions of people world-wide and places a significant socio-economic burden on society.Hydrogels,which are a class of biomaterials that are elastic,and display smooth surfaces while exhibiting high water content,are promising candidates for cartilage regeneration.In recent years,various kinds of hydrogels have been developed and applied for the repair of cartilage defects in vitro or in vivo,some of which are hopeful to enter clinical trials.In this review,recent research findings and developments of hydrogels for cartilage defects repair are summarized.We discuss the principle of cartilage regeneration,and outline the requirements that have to be fulfilled for the deployment of hydrogels for medical applications.We also highlight the development of advanced hydrogels with tailored properties for different kinds of cartilage defects to meet the requirements of cartilage tissue engineering and precision medicine.Wei Wei Yuanzhu Ma Xudong Yao Wenyan Zhou Xiaozhao Wang Chenglin Li Junxin Lin Qiulin He Sebastian Leptihn Hongwei Ouyang 2021Bioactive Materials2021,6,4:8
4Activity and hydrothermal stability of CeO_2–ZrO_2–WO_3 for the selective catalytic reduction of NO_x with NH_3显示文摘A series of CeO_2–ZrO_2–WO_3(CZW)catalysts prepared by a hydrothermal synthesis method showed excellent catalytic activity for selective catalytic reduction(SCR)of NO with NH_3 over a wide temperature of 150–550°C.The effect of hydrothermal treatment of CZW catalysts on SCR activity was investigated in the presence of 10% H_2O.The fresh catalyst showed above 90% NO_x conversion at 201–459°C,which is applicable to diesel exhaust NO_x purification(200–440°C).The SCR activity results indicated that hydrothermal aging decreased the SCR activity of CZW at low temperatures(below 300°C),while the activity was notably enhanced at high temperature(above 450°C).The aged CZW catalyst(hydrothermal aging at 700°C for 8 hr)showed almost 80% NO_x conversion at 229–550°C,while the V_2O_5–WO_3/TiO_2 catalyst presented above 80% NO_x conversion at 308–370°C.The effect of structural changes,acidity,and redox properties of CZW on the SCR activity was investigated.The results indicated that the excellent hydrothermal stability of CZW was mainly due to the CeO_2–ZrO_2 solid solution,amorphous WO_3 phase and optimal acidity.In addition,the formation of WO_3 clusters increased in size as the hydrothermal aging temperature increased,resulting in the collapse of structure,which could further affect the acidity and redox properties.Zhongxian Song Ping Ning Qiulin Zhang Hao Li Jinhui Zhang Yancai Wang Xin Liu Zhenzhen Huang 2016Journal of Environmental Sciences2016,28,4:7
5Catalytic methanol decomposition to carbon monoxide and hydrogen over Pd/CeO_2-ZrO_2-La_2O_3 with different Ce/Zr molar ratios显示文摘The catalytic behaviors of Pd (1.4 wt%) catalysts supported on CeO2-ZrO2-La2O3 mixed oxides with different Ce/Zr molar ratios were investigated for methanol decomposition. Nitrogen adsorption-desorption (BET), X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR), X-ray diffraction (XRD) and Pd dispersion analysis were used for their characterization. Pd/Ce0.76Zr0.18 La0.06O1.97 catalyst showed the highest BET surface area, best Pd dispersion capability and strongest metal-support interaction. Moreover, XPS showed that there was lattice defect oxygen or mobile oxygen. According to the result of O 1s measurements the lattice defect oxygen or mobile oxygen helped to maintain Pd in a partly oxidized state and increased the activity for methanol decomposition. The Pd/Ce0.76Zr0.18La0.06O1.97 catalyst exhibited the best activity. A 100% conversion of methanol was achieved at around 260℃, which was about 20-40℃ lower than otherHairong Wang Yaoqiang Chen Qiulin Zhang Qingchao Zhu Maochu Gong Ming Zhao 2009Journal of Natural Gas Chemistry2009,18,2:6
6Homogeneous bottom-growth of lithium metal anode enabled by double-gradient lithiophilic skeleton显示文摘Lithium(Li) metal is considered as the most promising anode material for the next-generation high performance Li batteries.However,the uncontrollable dendritic growth impedes its commercial application.Herein,we design a 3 D Si@carbon nanofibers(CNFs)@ZnO-ZnO-Cu skeleton(SCZ) for guiding the homogeneous bottom-growth of Li metal.The top LixSi@CNFs and bottom LiyZn@CNFs layers could form conductivity and overpotential gradient to avoid the 'top-growth' of Li metal.Moreover,the top lithiophilic LixSi@CNFs layer could regulate the nucleation and deposition of Li-ions even if the lithium dendrites grow out of the skeleton under high capacity Li deposition(30 mAh cm^(-2)).As a result,the SCZ-Li||LiFePO_(4) full cell delivers a high capacity of ~104 mAh g^(-1)(~94.82% capacity retention) after 2000 cycles at 5 C, elucidating the potential application of the 3 D double-gradient Li metal composite anode.Li Zhang Hongfei Zheng Ben Liu Qingshui Xie Qiulin Chen Liang Lin Jie Lin Baihua Qu Laisen Wang Dong-Liang Peng 2021Journal of Energy Chemistry2021,30,6:5
7Evolution of urban black and odorous water:The characteristics of microbial community and driving-factors显示文摘Urban black blooms that are primarily caused by organic carbon are deleterious environmental problems.However,detailed studies on the microbial characteristics that form urban black blooms are lacking.In this study,we observed the composition,diversity,and function of bacterial community in the overlying water and sediments during the occurrence and remediation of urban black blooms using high-throughput 16S rRNA gene amplicon sequencing analysis.First,we found that pivotal consortia in the overlying water increased significantly during the formation of black blooms,including the genera Acidovorax,Brevundimonas,Pusillimonas,and Burkholderiales involved in the degradation of refractory organics,as well as the genera Desulfovibrio,Dechloromonas,and Rhizobium related to the production of black and odorous substances.An RDA analysis revealed that chemical oxygen demand,dissolved oxygen,and oxidation reduction potential were related to the changes in microbial community composition.Furthermore,aeration was found to accelerate the removal of ammonia nitrogen and enhance the function of microbial community by stimulating the growth of order Planktomycetes during the remediation of black blooms,but aeration substantially damaged the microbial diversity and richness.Therefore,the health of the aquatic ecosystem should be comprehensively considered when aeration is applied to restore polluted waterbodies.Notably,we observed a large number of pathogenic bacteria in urban black blooms,which emphasizes the importance of treating domestic sewage so that it is harmless.Together,these findings provide new insights and a basis to prevent and manage urban black blooms.Dan Zhang Huilan Yang Shuhuan Lan Chen Wang Xudong Li Yunxiao Xing Hua Yue Qiulin Li Ling Wang Yifei Xie 2022Journal of Environmental Sciences2022,34,2:4
8New advances in the assessment of tight oil resource in China显示文摘The research on tight oil becomes another hotspot in the field of unconventional oil and gas after the boom of shale gas.The global recoverable resources of tight oil are estimated to be around 47.3×10^(9)t.In recent years,significant progress has been made in the technologies of tight oil exploration and development in North America,thus stimulating the dramatic increase of tight oil production.Meanwhile,China has also acquired remarkable achievements in tight oil exploration.Mature assessment methods have been established for tight oil resources by the US,generally dominated by analogy and statistical methods with their own advantages and disadvantages as well as applicable conditions.In China,improvement of resource evaluation techniques becomes an urgent issue in increasing tight oil reserve and production.This study mainly discusses the resource evaluation methods and resource enrichment characteristics of tight oil.Seven kinds of assessment methods in three categories(i.e.,analogy,statistical and genetic method)and evaluation parameters have been preliminary established,and are specifically applied in the Sichuan,Ordos,Songliao,Junggar,Bohai Bay and other tight oil basins through the newly hierarchical resource abundance analogy method,the estimated ultimate recovery(EUR)analogy method and the small-cell volumetric method.The preliminary evaluation results reveal that China has great potential in tight oil resource,and the geological resources amount to 20×10^(9)t,providing a resource base for large-scale development.Shejiao Wang Yuanjiang Yu Qiulin Guo Shaoyong Wang Xiaozhi Wu 2017Petroleum Research2017,2,1:4
9Interfacial engineering of Ni/V2O3 for hydrogen evolution reaction显示文摘Electrocatalytic water splitting offers a sustainable route for hydrogen production,enabling the clean and renewable alternative energy system of hydrogen economy.The scarcity and high-cost of platinum-group-metal(PGM)materials urge the exploration of high-performance non-PGM electrocatalysts.Herein,a unique hierarchical structure of NiA/2O3 with extraordinary electrocatalytic performance(e.g.t overpotentials as low as 22 mV at 20 mA·cm^-2 and 94 mV at 100 mA·cm^-2)toward hydrogen evolution reaction in alkaline electrolyte(1 M KOH)is reported.The investigation on the hierarchical NiA/2O3 with a bimodal size-distribution also offers insight of interfacial engineering that only proper NiA/2O3 interface can effectively improve H20 adsorption,H20 dissociation as well as H adsorption,for an efficient hydrogen production.Yang Chen Yuan Rao Rongzhi Wang Yanan Yu Qiulin Li Shujuan Bao Maowen Xu Qin Yue Yanning Zhang Yijin Kang 2020Nano Research2020,13,9:3
10An appliateion of fuzzy fault tree analysis for large and medium-sized pumping stations显示文摘Cao Qiulin Wang Xinghua 2012Applied Mechanics and Materials2012,,:1
11Scratch Detection Algorithm of Car Surface Based on Directional Color SUSAN Operator显示文摘The car surface scratch detection adopts the traditional manual detection with poor efficiency and high missing rate.Because of the gray mark and the background of car surface scratches,the traditional edge detection algorithm cannot meet the needs of car surface scratch detection.Therefore,the directional SUSAN algorithm based on CIELab color space is adopted in this paper.The direction template and the circle template to calculate the color difference of the color image are used in the algorithm which has been converted to the CIELab space.The edges and scratches are eliminated by matching and contrasting the detected image with the edge template.Experimental results show that the algorithm can effectively detect scratches on the surface of cars,improve the detection speed and reduce the undetected rate.WANG Zhen XIE Qiang DING Qiulin 2019Transactions of Nanjing University of Aeronautics and Astronautics2019,36,3:1
12Seamless and early gap healing of osteochondral defects by autologous mosaicplasty combined with bioactive supramolecular nanofiber-enabled gelatin methacryloyl(BSN-GelMA)hydrogel显示文摘Autologous mosaicplasty is a common approach used to treat osteochondral defects in clinical practice.Gap integration between host and transplanted plugs requires bone tissue reservation and hyaline cartilage regeneration without uneven surface,graft necrosis and sclerosis.However,poor gap integration is a serious concern,which eventually leads to deterioration of joint function.To deal with such complications,this study has developed a strategy to effectively enhance integration of the gap region following mosaicplasty by applying injectable bioactive supramolecular nanofiber-enabled gelatin methacryloyl(GelMA)hydrogel(BSN-GelMA).A rabbit osteochondral defect model demonstrated that BSN-GelMA achieved seamless osteochondral healing in the gap region between plugs of osteochondral defects following mosaicplasty,as early as six weeks.Moreover,the International Cartilage Repair Society score,histology score,glycosaminoglycan content,subchondral bone volume,and collagen II expression were observed to be the highest in the gap region of BSN-GelMA treated group.This improved outcome was due to bio-interactive materials,which acted as tissue fillers to bridge the gap,prevent cartilage degeneration,and promote graft survival and migration of bone marrow mesenchymal stem cells by releasing bioactive supramolecular nanofibers from the GelMA hydrogel.This study provides a powerful and applicable approach to improve gap integration after autologous mosaicplasty.It is also a promising off-the-shelf bioactive material for cell-free in situ tissue regeneration.Hongwei Wu Yuna Shang Wei Sun Xinyi Ouyang Wenyan Zhou Jieji Lu Shuhui Yang Wei Wei Xudong Yao g Xiaozhao Wang Xianzhu Zhang Yishan Chen Qiulin He Zhimou Yang Hongwei Ouyang 2023Bioactive Materials2023,,1:1
13Pho-tocatalytic Decomposition on Nano-Ti02:Destructionof Chloroaromatic Compounds显示文摘LU Shengyong WU Di WANG Qiulin 2011Chemosphere2011,82,9:1
14Photo-catalytic Decomposition of Gaseous 1,2-Dichlorobenzeneon TiO2 Films:Effect of Ozone Addition显示文摘LU Shengyong WANG Qiulin Buekens A G 2012Chem EngJ2012,,:1
15Cu 2 O/TiO 2 heterostructured hollow sphere with enhanced visible light photocatalytic activity显示文摘Haoyong Yin Xulong Wang Ling Wang Qiulin Nie Yang Zhang Weiwei Wu 2015Materials Research Bulletin2015,,:1
16Alterations in the processing of non-drug-related affective stimuli in abstinent heroin addicts显示文摘Wang Zhaoxin Zhang John X Wu QiuLin 2010NeuroImage2010,49,:1
17Alumina Ceramic Based High-Temperature Performance of Wireless Passive Pressure Sensor显示文摘无线被动压力传感器等价物到引入电容(LC ) 回声电路并且基于氧化铝陶器被使用高温度 sintering 制作陶器、火以后的 metallization 过程。圆柱的铜螺线读者天线和屏蔽层被设计在高温度环境为传感器认识到无线测量。传感器的高温度表演被学习读者天线的阶段频率和振幅频率特征分析并且讨论。传感器的平均频率变化是 0.68 kHz/i 吗??Bo WANG Guozhu WU Tao GUO Qiulin TAN 2016Photonic Sensors2016,6,4:1
18Optimization of Supercritical Extraction Process of Laoshan Black Tea by Response Surface Methodology显示文摘[Objectives]Laoshan black tea was subjected to supercritical CO_(2) extraction. [Methods]The extraction conditions of Laoshan black tea were studied by an orthogonal experiment and optimized by response surface methodology. [Results] The optimum extraction conditions of black tea extract by supercritical CO_(2) extraction were as follows: extraction pressure 23.53 MPa, extraction time 1.73 h, and extraction temperature 49.75 ℃, with which the extract yield could reach 5.15% theoretically. [Conclusions] Based on the traditional extraction process, a supercritical extraction method optimized by response surface methodology and a unique extraction process were formed, which enriches the extraction processes and methods of natural raw materials.Yongxin LIU Zhiguang LIU Zengyu WANG Shuai ZHANG Guofeng YU Jianhong SUN Shoutao CAO Qiulin LIU Xulun WEI Cuishu LENG Fuhua MA Xuegang LI Yinlong WANG Shoujie NIE 2023Agricultural Biotechnology2023,12,1:0
19Assessment on Tight Oil Resources in Fuyu Oil Layer in the Sanzhao Sag and Relevant Parameters显示文摘1 Introduction The oil reservoir formed by Quan3 and Quan4 tight sandstones,also called Fuyu oil layer,in the Sanzhao sag,northern Songliao Basin,contains'sub-source'tight oil,which sourced from the overlying Qing1 lacustrine mudstone that acts as the caprock of the Fuyu oil layer,with the Quan3 and Quan4 tight sand bodies of fluvial-ZHENG Man WANG Shejiao GUO Qiulin WANG Rui XIE Hongbin WANG Shaoyong 2015Acta Geologica Sinica(English Edition)2015,89,A01:0
20Enhanced catalytic activity for simultaneous removal of PCDD/Fs and NO over carbon nanotubes modified MnO_(x)-CeO_(2)/TiO_(2)catalyst at low temperatu显示文摘Simultaneous catalytic removal of polychlorinated dibenzo-p-dioxins and dibenzofurans(PCDD/Fs)and nitrogen oxides(NO_(x))emission at low temperature is of great significance to solve the multiple air pollution problem caused during waste incineration.A novel catalyst with excellent low-temperature activity towards PCDD/Fs catalytic decomposition,as well as selective catalytic reduction(SCR)of NO with NH_(3)is urgently needed to simultaneously control PCDD/Fs and NO emis-sions.Manganese-cerium composite oxides supported on titanium dioxide(MnO_(x)-CeO_(2)/TiO_(2))or TiO_(2)and carbon nano-tubes(CNTs)composite carrier(MnO_(x)-CeO_(2)/TiO_(2)-CNTs)were prepared using sol-gel method,and their catalytic activity towards simultaneous abatement of ortho-dichlorobenzene(o-DCBz,model molecular to simulate PCDD/Fs)and NO was investigated.In comparison with their removal,the simultaneous removal efficiencies of o-DCBz and NO over MnO_(x)-CeO_(2)/TiO_(2)catalyst are lowered to 27.9%and 51.3%at 150℃under the gas hourly space velocity(GHSV)of 15,000 h−1,due to the competition between the reactants for the limited surface acid sites and surface reactive oxygen species.CNTs addition improves the catalytic activity for their simultaneous removal.The optimum condition occurs on MnO_(x)-CeO_(2)/TiO_(2)combined with 20 wt.%CNTs that above 70%of o-DCBz and NO are removed simultaneously.Characterization results reveal that MnO_(x)-CeO_(2)/TiO_(2)-CNTs catalyst with proper CNTs content has larger Brunauer-Emmet-Teller surface area and greatly improved surface acidity property,which are beneficial to both o-DCBz and NO adsorption.Moreover,the relatively higher surface atomic concentration of Mn^(4+)as well as the existence of abundant surface Ce^(3+)atom accelerates the redox cycle of the catalyst and enriches the surface reactive oxygen species.All the above factors alleviate the competition effect between o-DCBz catalytic oxidation and NH_(3)-SCR reaction and are conducive to the simultaneous abatement of o-DCBz and NO.However,excess CNTs make less contribution on enhancing the interaction between Mn atom and Ce atom,thereby result-ing in less improvement in the catalytic activity.Qiulin Wang Zhuping Jiang Jianjian Zhou Jin Jing 2021Waste Disposal and Sustainable Energy2021,3,1:0
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