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1Review of zero-net-mass-flux jet and its application in separation flow control显示文摘Since the zero-net-mass-flux (ZNMF) jet was first used as a laboratory flow control method in 1990's, it has attracted much attention. The ZNMF jet has unique features such as compact actuator, no requirement for external air supply, complex piping, etc., and becomes a hot topic research subject in fluid mechanics. This review introduces the state of the art in the development of ZNMF jet in the quiescent fluid, the interaction of the ZNMF jet with the cross flow and its application in the separation flow control. The evolution of the vortex ring/pair and the spacial flow structure of the ZNMF in quicent fluid or cross flow are presented, as well as the key parameter effects. At last, the applications of ZNMF jet in the wake control of the circular cylinder, the separation control on the airfoil and the aerodynamic force or moment control on MAV/UAV are presented.ZHANG PanFeng WANG JinJun FENG LiHao 2008Science China(Technological Sciences)2008,51,9:30
2The Hardy Rubber Tree Genome Provides Insights into the Evolution of Polyisoprene Biosynthesis显示文摘Eucommia ulmoides,也叫的强壮的橡胶树,是一棵经济地重要的树;然而,它的染色体顺序的缺乏 ?限制基本生物研究和这植物种的应用研究。这里,我们在场它的 1.2-Gb 染色体的一个高质量的集会(支架 N50 ?=? 1.88 Mb ) 与至少 26 ? 为 E 的 723 预言的基因。ulmoides,顺序 Garryales 的首先定序的染色体,它用联合定序的 Illumina 的综合策略被获得,定序的 PacBio,和印射的 BioNano。作为到 lamiids 和 campanulids 的姐妹 taxon, E。ulmoides 经历了三倍由核心 eudicots 而是没有进一步整个染色体的复制分享了的一个古老的染色体 ? 在最后 1.25 亿年里。E。ulmoides 为涉及压力回答和第二等的代谢物的生合成的多重基因展出高表达式层次或基因数字扩大,它可以说明它的可观的环境适应性。与橡胶树(Hevea brasiliensis ) 相对照,它生产 cis 聚异式戊二我烯, E。ulmoides 演变综合经由 farnesyl diphosphate synthases (FPS ) 的长链的 trans 聚异式戊二我烯。而且, FPS 和橡胶延伸 factor/small 橡胶粒子蛋白质基因家庭从 H 独立地被扩展。brasiliensis 系。这些结果提供新卓见进 E. 的生物学 ? ulmoides 和聚异式戊二我烯生合成的起源。Ta-na Wuyun Lin Wang Huimin Liu Xuewen Wang Liangsheng Zhang Jeffrey L. Bennetzen Tiezhu Li Lirong Yang Panfeng Liu Lanying Du Lu Wang Mengzhen Huang Jun Qing Iili Zhu Wenquan Bao Hongguo Li Qingxin Du Jingle Zhu Hong Yang Shuguang Yang Hui Liu Hui Yue Jiang Hu Suoliang Yu Yu Tian Fan Liang Jingjing Hu Depeng Wang Ruiwen Gao Dejun Li Hongyan Du 2018Molecular Plant2018,11,3:24
3A Collinearity-Incorporating Homology Inference Strategy for Connecting Emerging Assemblies in the Triticeae Tribe as a Pilot Practice in the Plant Pangenomic Era显示文摘Plant genome sequencing has dramatically increased,and some species even have multiple high-quality reference versions.Demands for clade-specific homology inference and analysis have increased in the pangenomic era.Here we present a novel method,GeneTribe(http://gffzz6c7fcf032cb94ff5sfx9cv9upxo9k6nfx.ffgz.tsg.suse.edu.cn/genetribe/),for homology inference among genetically similar genomes that incorporates gene collinearity and shows bet-ter performance than traditional sequence-similarity-based methods in terms of accuracy and scalability.The Triticeae tribe is a typical allopolyploid-rich clade with complex species relationships that includes many important crops,such as wheat,barley,and rye.We built Triticeae-GeneTribe(http://gffzzaeec8df70e7c4b21hfx9cv9upxo9k6nfx.ffgz.tsg.suse.edu.cn/TGT/),a homology database,by integrating 12 Triticeae genomes and 3 outgroup model genomes and implemented versatile analysis and visualization functions.With macrocollinearity analysis,we were able to construct a refined model illustrating the structural rearrangements of the 4A-5A-7B chromosomes in wheat as two major translocation events.With collinearity analysis at both the macro-and microscale,we illustrated the complex evolutionary history of homologs of the wheat vernalization gene Vm2,which evolved as a combined result of genome translocation,duplication,and polyploidization and gene loss events.Our work provides a useful practice for connecting emerging genome assemblies,with awareness of the extensive polyploidy in plants,and will help researchers efficiently exploit genome sequence re-sources.Yongming Chen Wanjun Song Xiaoming Xie Zihao Wang Panfeng Guan Huiru Peng Yuannian Jiao Zhongfu Ni Qixin Sun Weilong Guo 2020Molecular Plant2020,13,12:14
4Modeling the Hook Depth Distribution of Pelagic Longlining in the Equatorial Area of Indian Ocean显示文摘A survey was conducted in the equatorial area of Indian Ocean for a better understanding of the dynamics of hook depth distribution of pelagic longline fishery.We determined the relationship between hook depth and vertical shear of current coefficiency,wind speed,hook position code,sine of wind angle,sine of angle of attack and weight of messenger weight.We identified the hook depth models by the analysis of covariance with a general linear model.The results showed that the wind effect on the hook depth can be ignored from October to November in the survey area;the surface current effect on the hook depth can be ignored;the equatorial undercurrent is the key factor for the hook depth in Indian Ocean;and there is a negative correlation between the hook depth and vertical shear of current and angle of attack.It was also found that the deeper the hook was set,the higher hook depth shoaling was.The proposed model improves the accuracy of the prediction of hook depth,which can be used to estimate the vertical distribution of pelagic fish in water column.SONG Liming LI Jie GAO Panfeng ZHOU Ji XU Liuxiong 2012Journal of Ocean University of China2012,11,4:10
5Analysis of stability of support and surrounding rock in mining top coal of inclined coal seam显示文摘The study analyzes the characteristics of roof movement in mining top coal of inclined coal seam,and establishes the mechanical model of support and surrounding-rock stability in inclined coal seam.Besides,this study carries out the numerical calculation and field observation of roof movement and support stability,and provides the critical control measures.The results show that the fracture firstly appears in middle-upper roof and extends upwards in top coal caving in inclined coal seam;regular and irregular caving zones appear in middle-upper stress concentration region,and the asymmetric caving arch is finally formed.Support load of middle-upper working face is larger than that of the middle-lower face;dynamic load coefficient of upper support is large,and the load on the front of support is larger than that on the rear of it,which leads to poor support stability.Stability of support and surrounding-rock system depends mainly on upper-support stability.Xin Yajun Gou Panfeng Ge Fudong 2014International Journal of Mining Science and Technology2014,24,1:8
6Lift enhancement method by synthetic jet circulation control显示文摘A novel circulation control technique is proposed to overcome the shortcomings of blowing jet circulation control,which uses the synthetic jet as the actuator and avoids the limitation about air supply requirement.The effectiveness of synthetic jet circulation control to enhance lift of NCCR1510-7067N airfoil is confirmed by solving the 2-D unsteady Reynolds-averaged Navier-Stokes equations.The aerodynamic characteristics and the flow structure(especially close to the trailing edge) of NCCR1510-7067N airfoil at zero angle of attack are also presented to discuss the mechanism of lift enhancement of the airfoil with synthetic jet circulation control.The results indicate that the synthetic jet can effectively delay the separation point on the airfoil trailing edge and increase the circulation and lift of the airfoil by Coanda effect.The numerical simulation results demonstrate that the lift augmentation efficiency with synthetic jet circulation control reaches △CL/Cμ=114 in the present study,which is much higher than the value 12.1 in the case with steady blowing jet circulation control.ZHANG PanFeng YAN Bo DAI ChenFeng 2012Science China(Technological Sciences)2012,55,9:7
7Controller Parameter Tuning of Delta Robot Based on Servo Identification显示文摘High-speed pick-and-place parallel robot is a system where the inertia imposed on the motor shafts is real-time changing with the system configurations.High quality of computer control with proper controller parameters is conducive to overcoming this problem and has a significant effect on reducing the robot's tracking error.By taking Delta robot as an example,a method for parameter tuning of the fixed gain motion controller is presented.Having identifying the parameters of the servo system in the frequency domain by the sinusoidal excitation,the PD+feedforward control strategy is proposed to adapt to the varying inertia loads,allowing the controller parameters to be tuned by minimizing the mean square tracking error along a typical trajectory.A set of optimum parameters is obtained through computer simulations and the effectiveness of the proposed approach is validated by experiments on a real prototype machine.Let the traveling plate undergoes a specific trajectory and the results show that the tracking error can be reduced by at least 50%in comparison with the conventional auto-tuning and Z-N methods.The proposed approach is a whole workspace optimization and can be applied to the parameter tuning of fixed gain motion controllers.ZHAO Qing WANG Panfeng MEI Jiangping 2015Chinese Journal of Mechanical Engineering2015,28,2:6
8Fine Mapping of RppP25, a Southern Rust Resistance Gene in Maize显示文摘Southern rust (Puccinia polysora Underw.) is a major disease that can cause severe yield losses in maize (Zea mays L.). In our previous study, a major gene RppP25 that confers resistance to southern rust was identified in inbred line P25. Here, we report the fine mapping and candidate gene analysis of RppP25 from the near-isogenic line F939, which harbors RppP25 in the genetic background of the susceptible inbred line F349. The inheritance of resistance to southern rust was investigated in the BC1F1 and BC3F1 populations, which were derived from a cross between F939 and F349 (as the recurrent parent). The 1:1 segregation ratio of resistance to susceptible plants in these two populations indicated that the resistance is controlled by a single dominant gene. Ten markers, including three simple sequence repeat (SSR) markers and seven insertion/deletion (InDel) markers, were developed in the RppP25 region. RppP25 was delimited to an interval between P091 and M271, with an estimated length of 40 kb based on the physical map of B73. In this region, a candidate gene was identified that was predicted to encode a putative nucleotide-binding site leucine-rich repeat (NBS-LRR) protein. Two co-segregated markers will aid in pyramiding diverse southern rust resistance alleles into elite materials, and thereby improve southern rust resistance worldwide.Panfeng Zhao Guobin Zhang Xiaojun Wu Na Li Dianyi Shi Dengfeng Zhang Chunfang Ji Mingliang Xu Shoucai Wang 2013Journal of Integrative Plant Biology2013,55,5:5
9Applying Fuzzy Matter-Element Model Based on AHP to Evaluating Bids of Water Saving Irrigation Project显示文摘Owing to overcoming the characteristics that there are many economic and technical indexes which are fuzzy and incompatibility to each other in evaluating investment project,a new method is proposed.The method is based on the matter-element analysis and combined with the concepts of fuzzy mathematics,which is called the method of fuzzy matter-element analysis.It constructs the compound fuzzy matter element with the investment projects,evaluation factors and their fuzzy value.Through establishing the best subjection degree (fuzzy value),complex fuzzy matter element of relational coefficient and weight aggregation of fuzzy matter-element model,the writer achieves on optimum order of the investment projects according to the calculated relational degree and finds the best project.In this paper,the calculation of weight adopts the analytical hierarchy process method(AHP).Through the actual example,it shows that the model is simple and its calculation is reliable.It is very significant for the engineering evaluated bid and investment decision.PANFeng FUQiang LIANGChuan LIUDong 2003Journal of Northeast Agricultural University(English Edition)2003,10,2:4
10Experimental investigation on the flow structure over a simplified Papilio Ulysses model显示文摘The aerodynamic characteristics of butterflies, especially those which can migrate overseas, have received a great deal of attention because they have larger-scale wingspans and lower flapping frequencies than other insects such as drosophilae and bees. The objective of this work is to investi-gate the flow structures over a simplified model of Papilio Ulysses, one kind of migratory butterflies, through hydrogen bubble visualizations, and leading-edge vortices, wing-tip vortices, separation bub-bles and horseshoe vortex wake are observed. Moreover, the variations of these structures with the angle of attack are discussed in detail. A new type of leading-edge vortices which resembles the inversed Chinese character '八' is observed in the experiment.HU Ye WANG JinJun ZHANG PanFeng ZHANG Cao 2009Chinese Science Bulletin2009,54,6:2
11Extreme Temperature Change of the Last 110 Years in Changchun,Northeast China显示文摘In China and East Asia,the long-term continuous observational data at daily resolution are insufficient,and thus there is a lack of good understanding of the extreme climate variation over the last 100 years plus.In this study,the extreme temperature indices defined by ETCCDI(Expert Team on Climate Change Detection and Indices)and local meteorological administrations were analyzed for Changchun City,Northeast China,by using the daily maximum temperature(Tmax)and daily minimum temperature(Tmin)over 1909?2018.The results showed that extreme cold events,such as cold days,cold nights,frost days,icing days,and low temperature days,decreased significantly at rates of?0.41 d(10 yr)^?1,?1.45 d(10 yr)^?1,?2.28 d(10 yr)^?1,?1.16 d(10 yr)?1 and?1.90 d(10 yr)^?1,respectively.Warm nights increased significantly at a rate of 1.71 d(10 yr)^?1,but warm days decreased slightly and the number of high temperature days decreased at a rate of?0.20 d(10 yr)?1.The frequency of cold surge events increased significantly at a rate of 0.25 d(10 yr)^?1,occurring mainly from the mid-1950s to late-1980s.The average Tmax,average Tmin and extreme Tmin increased at rates of 0.09℃(10 yr)^?1,0.36℃(10 yr)^?1 and 0.54℃(10 yr)^?1,respectively;and extreme Tmax decreased significantly at a rate of?0.17℃(10 yr)^?1.In 1909?2018,1951?2018 and 1979?2018,the indices related to cold events decreased,while the trends of the indices related to warm events were different for different periods.Xiujing YU Guoyu REN Panfeng ZHANG Jingbiao HU Ning LIU Jianping LI Chenchen ZHANG 2020Advances in Atmospheric Sciences2020,37,4:2
12Turbulent mass transfer model for simulating protein desorption in liquid-solid circulating fluidized bed risers显示文摘An integrated model,namely the two-equation turbulent model,is introduced to simulate mass transfer in a liquid-solid circulating fluidized bed(LSCFB)riser.Protein desorption is simulated and the proposed model is validated.The protein concentration profiles simulated with this model agree well with published experimental results.This model enables direct determination of turbulent mass diffusivity,removing the need to empirically guess a constant turbulent Schmidt number for simulating mass transfer in a turbulent flow.This model is useful when the turbulent mass diffusivity is not available for simulating mass transfer in an LSCFB riser.Panfeng Ren Yawen Zhang Wenbin Li Kuotsung Yu 2021Particuology2021,19,4:2
13NEW VERSATILE CAMERA CALIBRATION TECHNIQUE BASED ON LINEAR RECTIFICATION显示文摘A new versatile camera calibration technique for machine vision using off-the-shelf cameras is described. Aimed at the large distortion of the off-the-shelf cameras, a new camera distortion rectification technology based on line-rectification is proposed. A full-camera-distortion model is introduced and a linear algorithm is provided to obtain the solution. After the camera rectification intrinsic and extrinsic parameters are obtained based on the relationship between the homograph and absolute conic. This technology needs neither a high-accuracy three-dimensional calibration block, nor a complicated translation or rotation platform. Both simulations and experiments show that this method is effective and robust.PanFeng WangXuanyin 2004Chinese Journal of Mechanical Engineering2004,17,4:2
14STABILITY OF DISSIPATIVE BOLTZMANN EQUATION FOR ONE-DIMENSIONAL GRANULAR GASES显示文摘In this paper, the stability of the dissipative Boltzmann equation is investigated under the influence of an external source of energy for the spatially homogeneous case. Using probability distance, we give an estimate to show the uniform stability of the solution.Shoubo Jin, Panfeng Chen (School of Math. and Statistics, Suzhou University, Suzhou 234000, Anhui) 2011Annals of Differential Equations2011,27,2:2
15Novel signal wave pattern for efficient synthetic jet generation显示文摘Zhang Panfeng Wang Jinjun 2007AIAA J2007,45,5:1
16Matrix Elements of One— and Two—Body Operators in the Unitary Group Approach (Ⅱ)—Application显示文摘Simple analytical expressions for one-and two-body matrix elements in the unitary group approach to the configuration interaction problems of many-electron systems are obtained based on the previous results for general Un irreps.DAILian-Rong PANFeng 2001Communications in Theoretical Physics2001,35,3:1
17A wheat integrative regulatory network from large-scale complementary functional datasets enables trait-associated gene discovery for crop improvement显示文摘Gene regulation is central to all aspects of organism growth,and understanding it using large-scale functional datasets can provide a whole view of biological processes controlling complex phenotypic traits in crops.However,the connection between massive functional datasets and trait-associated gene discovery for crop improvement is still lacking.In this study,we constructed a wheat integrative gene regulatory network(wGRN)by combining an updated genome annotation and diverse complementary functional datasets,including gene expression,sequence motif,transcription factor(TF)binding,chromatin accessibility,and evolutionarily conserved regulation.wGRN contains 7.2 million genome-wide interactions covering 5947 TFs and 127439 target genes,which were further verified using known regulatory relationships,condition-specific expression,gene functional information,and experiments.We used wGRN to assign genome-wide genes to 3891 specific biological pathways and accurately prioritize candidate genes associated with complex phenotypic traits in genome-wide association studies.In addition,wGRN was used to enhance the interpretation of a spike temporal transcriptome dataset to construct high-resolution networks.We further unveiled novel regulators that enhance the power of spike phenotypic trait prediction using machine learning and contribute to the spike phenotypic differences among modern wheat accessions.Finally,we developed an interactive webserver,wGRN(http://gffzzaeec8df70e7c4b21hfx9cv9upxo9k6nfx.ffgz.tsg.suse.edu.cn/wGRN),for the community to explore gene regulation and discover trait-associated genes.Collectively,this community resource establishes the foundation for using large-scale functional datasets to guide trait-associated gene discovery for crop improvement.Yongming Chen Yiwen Guo Panfeng Guan Yongfa Wang Xiaobo Wang Zihao Wang Zhen Qin Shengwei Ma Mingming Xin Zhaorong Hu Yingyin Yao Zhongfu Ni Qixin Sun Weilong Guo Huiru Peng 2023Molecular Plant2023,16,2:1
18Deter- mination of primary and secondary aliphatic amines with high performance liquid chromatography based on the de- rivatization using 1,3,5,7-tetramethyl-8-( N-hydroxysue- cinimidyl butyric ester )-difluoroboradiaza-s-indacene 显示文摘Gao Panfeng Zhang Zixing Guo Xiaofeng 2011Talanta2011,84,4:1
19Design of a 4-DOF hybrid PKM module for large structural component assembly显示文摘HUANG Tian WANG Panfeng ZHAO Xueman 2010CIRP Annals-Manufacturing Technology2010,59,:1
20Acidolysis hydrocarbon characteristics and significance of sediment samples from the ODP drilling legs of gas hydrate显示文摘为了在 acidolysis 的意义和基础上学习,索引到中国海洋的煤气的水合物探索,自从 2006 ,从钻的腿 164 海洋和 204 节目( ODP )导出的 111 件样品在中国石油探索研究院的实验中心被分析由 PE AutoSystem XL 和同位素团分光计的煤气的层析( GC )在 acidolysis 烃索引和甲烷碳同位素上获得数据( IRMS ) Finnigan MAT251 。通过这些,我们学习 acidolysis 方法的可靠性并且描绘煤气的水合物潜力。结果证明 acidolysis 烃索引与煤气的水合物稳定性地区(GHSZ ) 有稳定的通讯在 ODP,和那在可能可靠地反映烃移植从底部水合物引起的 authigenic 碳酸盐的存在的浅样品有清楚的反常符号。我们因此建议描绘 acidolysis 烃的能力对在中国的海底的煤气的水合物探索关键。Xun Sun Chunyan Sun Jiangyun Xiang Jihui Jia Panfeng Li Zhibin Zhang 2012Geoscience Frontiers2012,3,4:1
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