|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Effect 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 | 2013 | Chinese Journal of Aeronautics2013，26，1： | 18 |
| 2 | Activity 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 | 2016 | Journal of Environmental Sciences2016，28，4： | 7 |
| 3 | Homogeneous 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 | 2021 | Journal of Energy Chemistry2021，30，6： | 5 |
| 4 | The potential distribution of adult Antarctic krill in the Amundsen Sea显示文摘Antarctic krill is the key species of ecological system in the Amundsen Sea.At present,the suitable distribution is unobtainable by scientifi c surveys or data from the fi shery.In this paper,the maximum entropy algorithm(Maxent)was used to obtain the potential distribution of adult Antarctic krill in order to provide useful information and reasonable reference for the policy on protecting potential krill habitats around the Amundsen Sea.Occurrence points and 17 environmental variables were used to simulate the distributions.Results show that the high and moderate suitable habitats lie between 65°S and 72°S in the Amundsen Sea.The high suitable habitat accounts for 8.1%of the total area of the Amundsen Sea.The sea ice persistence(ICE),total phytoplankton(PHYC),and the minimum value of dissolved iron(Fe_min)are the three dominant contributors to the model.Results from the response curves show that Antarctic krill preferred habitats with ICE of 0.42-0.93,PHYC of 2.48-2.77 mmol/m^(3) and Fe_min of(7.10×10^(-5))-(9.45×10^(-5))mmol/m 3.Positive trends existed in the PHYC of the high and moderate suitable habitat,and a positive trend existed in the Fe_min of moderate suitable habitat.However,the probability of presence of Antarctic krill will decrease if the increase of the PHYC and Fe_min continues. | Jianlong FENG Lulu LIU Qiulin LIU Liang ZHAO | 2022 | Journal of Oceanology and Limnology2022，40，4： | 1 |
| 5 | Effect of combined magnetic field on the eliminating inclusions from liquid aluminum alloy 显示文摘 | He Yanjie Li Qiulin Liu Wei | | Materials Letters0，65，8： | 1 |
| 6 | Generation of spatial atmospheric turbulence field in aircraft motion simulation based on refined similarity hypothesis显示文摘It is necessary to build turbulence model to study the response of aircraft to atmospheric turbulence for high resolution earth observation. The conventional method is on the basis of Dryden’s model with the assumption that individual patches are Gaussian. In this paper,based on Kraichnan’s refined similarity idea,a new 1D atmospheric turbulence model is set up by introducing the energy transfer rate as an intermittency disturbance to a Gaussian process. Our results show that the turbulent fields generated by our new method exhibit an anomalous scaling described by the She-Leveque (SL) formula,which is now well accepted for homogenous and isotropic turbulence. | GUO Hao CHEN JingJing QU QiuLin LIU PeiQing | 2011 | Science China(Technological Sciences)2011，54，1： | 1 |
| 7 | Effect of combined magnetic field on the eliminating inclusions from liquid aluminum alloy显示文摘 | Yanjie He Qiulin Li Wei Liu | 2011 | Materials Letters2011，，8： | 1 |
| 8 | Expression and interaction of small heat shock proteins (sHsps) in rice in response to heat stress显示文摘 | Chen Xinhai Lin Shoukai Liu Qiulin | 2014 | Biochimica et Biophysica Acta2014，1844，： | 1 |
| 9 | Miniature low- power IR monitor for methane detection 显示文摘 | Liu Jun Tan Qiulin Zhang Weidong | 2011 | Measurement2011，44，5： | 1 |
| 10 | PREPARATION OF 6066 Al/SiC_p(+Gr) COMPOSITES BY MULTI-LAYER SPRAY DEPOSITION显示文摘PREPARATIONOF6066Al/SiC_p(+Gr)COMPOSITESBYMULTI-LAYERSPRAYDEPOSITION￥ChenZhenhua;ZhangHao;ChenGang;LiuQiulin;SunZhangming;Yan?.. | Chen Zhenhua Zhang Hao Chen Gang Liu Qiulin Sun Zhangming Yang Fuliang(Research Institute of Nonequilibrium Materials Science and Technology,Central South University of Technology,Changsha 410083) | 1996 | 中国有色金属学会会刊:英文版1996，6，4： | 1 |
| 11 | Isolation,optimization,and functional analysis of the cDNA encoding transcription factor OsDREB1B in Oryza sativa L显示文摘 | Qin Qiulin Liu Jinge | | 0，，： | 1 |
| 12 | Effect of combined magnetic field on the eliminating inclusions from liquid aluminum alloy显示文摘 | Yanjie He Qiulin Li Wei Liu | 2011 | Materials Letters2011，，8： | 1 |
| 13 | Miniature low- power IR monitor for methane detection 显示文摘 | Liu Jun Tan Qiulin Zhang Wendong | 2011 | Measurement2011，44，： | 1 |
| 14 | Two-Channel IR Gas Sensor with Two Detectors Based on LiTaO3 Single-Crystal Wafer 显示文摘 | Zhang Wendong Tan Qiulin Liu Jun | 2010 | Optics & Laser Technology2010，42，8： | 1 |
| 15 | Mesh model building and migration and accumulation simulation of 3D hydrocarbon carrier system显示文摘Migration and accumulation simulation of oil and gas in carrier systems has always been a difficult subject in the quantitative study of petroleum geology. In view of the fact that the traditional geological modeling technology can not establish the interrelation of carriers in three dimensional space, we have proposed a hybrid-dimensional mesh modeling technology consisting of body(stratum), surfaces(faults and unconformities), lines and points, which provides an important research method for the description of geometry of sand bodies, faults and unconformities, the 3 D geological modeling of complex tectonic areas, and the simulation of hydrocarbon migration and accumulation. Furthermore, we have advanced a 3 D hydrocarbon migration pathway tracking method based on the hybrid-dimensional mesh of the carrier system. The application of this technology in western Luliang Uplift of Junggar Basin shows that the technology can effectively characterize the transport effect of fault planes, unconformities and sand bodies, indicate the hydrocarbon migration pathways, simulate the process of oil accumulation, reservoir adjustment and secondary reservoir formation, predict the hydrocarbon distribution. It is found through the simulation that the areas around the paleo-oil reservoir and covered by migration pathways are favorable sites for oil and gas distribution. | GUO Qiulin LIU Jifeng CHEN Ningsheng WU Xiaozhi REN Hongjia WEI Yanzhao CHEN Gang GONG Deyu YUAN Xuanjun | 2018 | Petroleum Exploration and Development2018，45，6： | 0 |
| 16 | Ar-plasma enhanced copper-nickel alloy catalysis for ammonia synthesis显示文摘Ammonia(NH_(3))synthesis via electrocatalytic nitrogen reduction generally suffers from low NH_(3)yield and faradaic efficiency.Compared with activating stable,low-solubility N_(2),the electrochemical conversion of nitrates to ammonia provides a more reasonable route for NH_(3)production.Herein,we introduce Ar-plasma to enhance the interaction between copper-nickel alloys and carbon substrate to improve the performance of NH_(3)production.The NH_(3)faradaic efficiency from nitrate is nearly 100%and the yield rate is over 6000μgNH_(3)cm^(−2)h^(−1).DFT(density functional theory)calculation reveals the high performance of Cu_(50)Ni_(50)originates from the lower energy barrier on the reaction path and the closer position to the Fermi level of the d-band center.This work offers a promising strategy for plasma-modified electrocatalyst to promote ammonia synthesis via nitrate reduction. | Zhou Yimeng Lv Jiabao Peng Yaqi Lin Xiaoqing Lv Xingjie Ye Qiulin Liu Shaojun Wu Angjian Li Xiaodong | 2022 | Waste Disposal and Sustainable Energy2022，4，2： | 0 |
| 17 | Attractive fixed-point solution study of a shell model for turbulent convection显示文摘Different scaling behaviors, such as Kolmogorov (K41) scaling and Bolgiano and Obukhov (BO) scaling, have been reported in various shell models proposed for turbulent thermal convection. However, two coexistent subranges with K41 and BO scaling are not set up with Bolgiano scale interlaying between the largest scale and the dissipation scale. In this paper, we summarize fixed-point solution study of the Brandenburg model with small perturbation theory by introducing a small disturbance term as the impact of buoyancy. Three groups of fixed-point solutions with different locations of the so-called buoyancy scale, above/below which buoyancy is significant/insignifant. Both theoretical and numerical results show that a modified K41 scaling, instead of K41 and BO coexistent scaling, is set up even though buoyancy may be significant over the scaling range, which suggests that the buoyancy scale is not related exactly to the Bolgiano scale. Thus, a K41 and BO coexistent scaling behavior is not setup for the Brandenburg model. | GUO Hao LI Chao QU QiuLin LIU PeiQing | 2013 | Science China(Physics,Mechanics & Astronomy)2013，56，5： | 0 |
| 18 | Optimization 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 | 2023 | Agricultural Biotechnology2023，12，1： | 0 |
| 19 | Genomic landscape of mitochondrial DNA insertions in 23 bat genomes:characteristics,loci,phylogeny,and polymorphism显示文摘The transfer of mitochondrial DNA to the nuclear genome gives rise to the nuclear DNA sequences of mitochon-drial origin(NUMTs),considered as a driving force in genome evolution.In this study,NUMTs in 23 bat genomes were investigated and compared systematically.The results showed that NUMTs existed in 22 genomes except for Noctilio leporinus,suggesting that mitochondrial fragment insertion in the nuclear genome was a common event in bat genomes.However,remarkable variations in NUMTs number,cumulative length,and proportion in the nu-clear genome were discovered across bat species.Further orthologous NUMT loci analysis of the Phyllostomidae family indicated that the NUMTs insertion events in bat genomes were homoplasy-free.The NUMTs were mainly inserted into the intergenic regions,particularly,co-localized with repetitive sequences(especially transposable el-ements).However,several NUMTs were inserted into genes,some of which were in the exon region of functional genes.One NUMT in the genome of Pteropus alecto surprisingly matched with cDNA of ATP8B3 that provided evidence of NUMTs with coding function.Phylogenic analysis on NUMTs originating from COXI and COXII loci highlighted 2 clusters of Yinpterochiroptera and Yangochiroptera for Chiroptera.Seven NUMTs from Rhinolophus ferrumequinum were amplified,and the sequencing results confirmed the reliability of the NUMT analysis.One of them was polymorphic for the presence or absence of the NUMT insertion,and each genotype of NUMT loci showed a distinct regional distribution pattern.The information obtained in this study provides novel insights into the NUMT organization and features in bat genomes and establishes a basis for further studying of the evolution of bat species. | Guojun ZHANG Deqi GENG Qiulin GUO Wei LIU Shufen LI Wujun GAO Yongfei WANG Min ZHANG Yilin WANG Yanzhen BU Hongxing NIU | 2022 | Integrative Zoology2022，17，5： | 0 |
| 20 | Study on the Cutting Temperature of the Textured Tool by 3D FEA Simulation显示文摘Temperature plays an important role in the life of cutting tools.However,it is sometimes difficult to observe instantaneously because of limited data acquisition,especially for the textured tool.In this paper,the performance of microgroove textured cutting tools for three-dimensional(3D)oblique dry turning of AISI 1045 steel was studied by finite element simulation.The effects of width,depth and spacing of strip micro-texture on cutting temperature and the effect of cutting speed on cutting temperature of strip microtexture tool were studied.The results show that the maximum temperature of the tool and the tip temperature first increase and then decrease with the increase of micro-texture width.When the micro-texture depth increases,the maximum temperature and the tool tip temperature decrease first and then increase.The highest temperature and tip temperature of the tool gradually increase with the increase of micro-texture spacing.The highest temperature and tip temperature of the tool increase with the increase of cutting speed,feed speed and cutting depth.In addition,the effective mechanism of micro-texture parameter for the temperature was proposed.It provides profound guidance for optimizing the microstructure parameters and cutting process of cutting tools according to cutting temperature in this study.It also provides an effective and practical method for the design,innovation and development of microtextured tools. | Siwen TANG Pengfei LIU Rui WANG Qiulin NIU Guoqing YANG Wenhui LIU Qian LIU | 2019 | Mechanical Engineering Science2019，1，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员