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Chemical Research in Chinese Universities 2010年第6期26卷 929-932页

作者： LIU Li XUE Si-jia BU Hong-fei chen Long Department of Chemistry Shanghai Normal University Shanghai 200234 P. R. China

2,4-Dichlorophenoxyacetyl（thio）urea and S-（＋）-3-methyl-2-（4-chlorophenyl）butyramides were synthesized via acylation,aminolysis,esterification and addition reactions,and the partial new compounds have desirable ... 详细信息

关键词： 2 4-Dichlorophenoxyacetyl(thio)urea S-(+)-3-Methyl-2-(4-chlorophenyl)butyramide Herbicidal activity Fungicidal activity

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小麦胚芽鞘长度QTL定位和GWAS分析

作物学报 2024年第3期50卷 590-602页

作者：郝倩琳杨廷志吕新茹秦慧敏王亚林贾晨飞夏先春马武军徐登安青岛农业大学农学院山东青岛266109 中国农业科学院作物科学研究所北京100081

在干旱条件下,小麦(Triticum aestivum L.)适当深播可提高出苗率,胚芽鞘长度决定了小麦播种的最大深度,因此培育长胚芽鞘小麦品种至关重要。为了挖掘控制小麦胚芽鞘长度相关的数量性状位点(quantitative trait loci,QTL),本研究以275份... 详细信息

在干旱条件下,小麦(Triticum aestivum L.)适当深播可提高出苗率,胚芽鞘长度决定了小麦播种的最大深度,因此培育长胚芽鞘小麦品种至关重要。为了挖掘控制小麦胚芽鞘长度相关的数量性状位点(quantitative trait loci,QTL),本研究以275份豆麦/石4185重组自交系(recombinant inbred lines,RIL)群体和186份自然群体为材料,根据90K SNP芯片的分型结果,利用3个环境下小麦胚芽鞘长度表型数据进行QTL鉴定。采用完备区间作图法(inclusive composite interval mapping,ICIM)在RIL群体中鉴定到2个稳定的QTL位点,分别位于4BS(30.17~40.59 Mb)和6BL(700.08~703.53 Mb)染色体上,解释表型变异率(PVE)分别为26.29%~28.46%和4.16%~4.36%;全基因组关联分析(GWAS)采用混合线性模型(Mixed linear model,MLM)方法,共鉴定到36个稳定的QTL位点,分别位于1A(3)、1B(3)、1D(2)、2A(1)、3A(2)、3B(2)、4B(11)、5A(1)、5B(3)、6B(4)、7A(2)、7B(2)染色体上,在3个环境中重复检测到的显著关联位点有7个,其中3个位点与已报道的位点重叠或邻近,其他4个位点推测为新位点,分别位于1A(499.03 Mb)、3A(73.06 Mb)、4B(648.74~648.87 Mb)、7A(36.31 Mb)染色体上,预测了5个候选基因(TraesCS1A03G0748300、Rht1、TraesCS4B03G0110000、TraesCS4B03G0112200和TraesCS7A03G0146600)。在两个群体中均鉴定到位于4BS(30.17~40.59 Mb)染色体上的主效QTL位点,该位点的候选基因Rht1已被证实能降低小麦胚芽鞘长度。该研究结果为挖掘控制小麦胚芽鞘长度的基因以及胚芽鞘长度相关性状分子标记辅助选择育种奠定了基础。

关键词：小麦胚芽鞘长度 QTL定位全基因组关联分析

Subscapular Bursa： Anatomy and Magnetic Resonance Appearance

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Chinese Medical Journal 2017年第14期130卷 1739-1740页

作者： Ji-cheng Gong Na chen jia-fei chen Zhou Xu Yi WU Jin-Qing Li Kang-Lai Tang Department of Orthopedic Surgery Sports Medicine Center Southwest Hospital Third Military Medical University Chongqing 400038 China Department of Digital Medicine Biomedical Engineering College Third Military Medical University Chongqing 400038 China Department of Radiology Southwest Hospital Third Military Medical University Chongqing 400038 China Department of Radiology 324th Hospital of the PLA Chongqing 400020 China

The definition of the subscapular bursa （SSB） remains *** researcher demonstrated that SSB was a separate pouch.[l] However,others believed that SSB was actually the superior subscapularis recess （SSR）,which is an outpouching of the glenohumeral joint capsule.[4] Whether or not the SSB and SSR are two different bursae must be ***,the fluid in the SSR revealed in magnetic resonance （MR） imaging has been regarded as an indication for a diagnosis of frozen shoulder.[3] Considering that the SSB and SSR are two different structures with a close spatial relationship,recognition of the MR appearance of SSB might have important diagnostic *** purposes of this study were to describe the anatomy of the SSB using a three-dimensional （3D） visualization technique based on the Chinese visible human （CVH） and to explore the MR appearance of the SSB.

关键词： Anatomy Bursa,Magnetic Resonance Imaging Shoulder Joint Synovial Visible Human Project

Highly anti-corrosive NiFe LDHs–NiFe alloy hybrid enables long-term stable alkaline seawater electrolysis

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Rare Metals 2024年第9期43卷 4321-4332页

作者： jia-Hong Li Hao chen Si-Hang You Gan-Xin Yang Peng Liu Meng-Qi Gao Shu-Guang chen fei-fei Zhang School of Materials Science and Engineering Changsha University of Science and Technology Department of Materials Science and Engineering Faculty of Engineering National University of Singapore School of Materials Science and Engineering Jilin University

Owing to the significant potential of alkalin seawater electrolysis for converting surplus power into eco friendly hydrogen fuel,we developed bifunctional elec trodes that integrate low-crystalline NiFe LDHs and amorphous NiFe alloy on a Ni foam （NF） substrate to enhance this *** by the battery-like charac teristics of NiFe LDHs,an anti-corrosive and active oute layer of NiFevacOOH continuously forms over time in th hybrid on the anode for the oxygen evolution reaction（OER）,effectively mitigating powder shedding caused by corrosion induced by multiple anions in *** while,the strong bond between the hybrid and the NF substrate maintains intact hybrid coatings to ensure a rel atively high overall conductivity of the electrodes,signif icantly reducing the negative effects of structura degradation during the OER and hydrogen evolution reaction （HER）,as well as the accumulation of contami nants on the electrode *** long-term tests,thes bifunctionalhybridelectrodesmaintained stable performance,even at a high current density o500 mA·*** cell voltage increased by only 88 m V over 1000 h to 1.970 V during saline electrolysis and by103 mV over 500 h to 2.062 V during seawater electroly ***,this study provides valuable insights into efficient and stable seawater electrolysis using NiFe LDHs–NiFe alloy hybrids.

关键词： Bifunctional Corrosion NiFe LDHs Seawater electrolysis Stability

An electron-transfer[Fe_(2)Co_(2)]square complex exhibiting unprecedented wide room-temperature hysteresis

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Science China Chemistry 2024年第4期67卷 1198-1207页

作者： Xin-Hua Zhao Yi-fei Deng jia-Tao chen Jiong Yang Yuan-Zhu Zhang Department of Chemistry Southern University of Science and Technology(SUSTech)Shenzhen 518055China

Switchable molecules with magnetic bistability that can function at standard conditions are highly desirable from the perspective of practical *** the last decade,significant progress has been made in modulating thermally induced electrontransfer-coupled spin transition(ETCST)events between diamagnetic{Fe_(LS)^(Ⅱ)(μ-CN)Co_(LS)^(Ⅲ)}and paramagnetic{Fe_(LS)^(Ⅲ)(μ-CN)-Co_(HS)^(Ⅱ)}electron configurations(named LS and HS,respectively,for short)within the Fe/Co mixed-valence cyanometallate ***,we prepared a novel[Fe_(2)Co_(2)]square complex[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)·4CH_(3)OH·2.5H_(2)O(1·Solv)and its desolvated phase[(pzTp)Fe(CN)_(3)Co(bnbpen)]_(2)[NO_(3)]_(2)(1),obtained via single-crystal-to-single-crystal(SCSC)*** 1·Solv remaining in the diamagnetic state below room temperature exhibits an irreversible ETCST behavior accompanied by desolvation upon ***,complex 1 displays an unprecedented rate-dependent ETCST behaviour involving with two diamagnetic LS states(a dynamically favoured LS1 state and a thermodynamically favoured LS2state),between which a net one-way transition from LS1 to LS2 is accessible likely via a structural phase transition(SPT)above255 ***,two well separated transition channels(HS?LS1 at around 255 K and HS←→LS2 in the temperature range of 317-350 K)are achieved according to either fast(>20 K/min)or slow rate(<1 K/min),*** a moderate rate of 3 K/min,complex 1 shows a wide hysteresis of 66 K centered at 328 K,the largest yet reported for discrete Fe/Co cyanometallate *** 1 represents the first ETCST example coupled with dynamic SPT,providing a new strategy for manipulating bistability within this fascinating cyanometallate family.

关键词： switchable molecules cyanometallate complexes electron transfer hysteresis structural phase transition

A nitric oxide-triggered hydrolysis reaction to construct controlled self-assemblies with complex topologies

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Science China Chemistry 2024年第4期67卷 1289-1299页

作者： Wenzhuo chen Yuping Tang Shuai chen Zipei chen jia He Hongbin Huo Juan Zhang jiajia Li fei Yan Wei Tian Laboratory of Shaanxi Administration of Traditional Chinese Medicine for TCM Compatibility Shaanxi Key Laboratory of Chinese Medicine Fundamentals and New Drugs ResearchCollege of PharmacyShaanxi University of Chinese MedicineXianyang 712046China Shaanxi Key Laboratory of Macromolecular Science and Technology Xi’an Key Laboratory of Hybrid Luminescent Materials and Photonic DeviceMOE Key Laboratory of Material Physics and Chemistry under Extraordinary ConditionsSchool of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Polymeric Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China

Hydrolysis reactions are capable of directing the non-equilibrium assembly of biomolecular scaffolds to realize sophisticated structures and functions in natural ***,utilizing the proper hydrolysis reactions to construct controlled assemblies with complex topologies is still an arduous challenge in artificial systems and needs to be ***,we report a nitric oxide(NO)-triggered slow hydrolysis strategy for the controlled construction of biomimetic supramolecular toroids(STs),thus realizing their visualization of intermediate structures and regulation of geometry *** presented protocol harnesses hydrolysis reactions to control of non-equilibrium self-assembly processes for the construction of self-assemblies with complex topologies successfully,which sheds light on how the hydrolysis reaction rate can modulate the kinetic pathway of assembly,thus realizing the artificial establishment of bio-inspired hierarchical structures.

关键词： supramolecular toroids controlled self-assembly nitic oxide-triggered hydrolysis pathway regulation

6DOF pose estimation of a 3D rigid object based on edge-enhanced point pair features

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Computational Visual Media 2024年第1期10卷 61-77页

作者： chenyi Liu fei chen Lu Deng Renjiao Yi Lintao Zheng chenyang Zhu jia Wang Kai Xu College of Computing National University of Defense TechnologyChangsha410073China Department of Spine Surgery the Second Xiangya HospitalCentral South UniversityChangsha410011China Clinical Nursing Teaching and Research Section the Second Xiangya HospitalChangsha410011China College of Meteorology and Oceanography National University of Defense TechnologyChangsha410073China Beijing Institute of Tracking and Communication Technology Beijing100094China

The point pair feature(PPF)is widely used for 6D pose *** this paper,we propose an efficient 6D pose estimation method based on the PPF *** introduce a well-targeted down-sampling strategy that focuses on edge areas for efficient feature extraction for complex geometry.A pose hypothesis validation approach is proposed to resolve ambiguity due to symmetry by calculating the edge matching *** perform evaluations on two challenging datasets and one real-world collected dataset,demonstrating the superiority of our method for pose estimation for geometrically complex,occluded,symmetrical *** further validate our method by applying it to simulated punctures.

关键词： point pair feature(PPF) pose estimation object recognition 3D point cloud

Bending Failure Mode and Prediction Method of the Compressive Strain Capacity of A Submarine Pipeline with Dent Defects

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China Ocean Engineering 2024年第4期38卷 636-647页

作者： HOU Fu-heng jia Lu-sheng chen Yan-fei ZHANG Qi ZHONG Rong-feng WANG Chun-sha School of Mechanical and Transportation Engineering China University of PetroleumBeijingBeijing 102249China CNOOC Research Institute Ltd.Beijing 100028 China

A dent is a common type of defects for submarine *** submarine pipelines,high hydrostatic pressure and internal pressure are the main *** pipelines bend due to complex subsea conditions,the compression strain capacity may be *** into the local buckling failure and accurate prediction of the compressive strain capacity are important.A finite element model of a pipeline with a dent is *** buckling failure under a bending moment is investigated,and the compressive strain capacity is *** effects of different parameters on pipeline local buckling are *** results show that the dent depth,external pressure and internal pressure lead to different local buckling failure modes of the pipeline.A higher internal pressure indicates a larger compressive strain capacity,and the opposite is true for external *** the ratio of external pressure to collapse pressure of intact pipeline is greater than 0.1,the deeper the dent,the greater the compressive strain capacity of the *** as the ratio is less than 0.1,the opposite is *** the basis of these results,a regression equation for predicting the compressive strain capacity of a dented submarine pipeline is proposed,which can be referred to during the integrity assessment of a submarine pipeline.

关键词： submarine pipeline dent defect bending load local buckling compressive strain capacity

Sedimentary architecture of submarine channel-lobe systems under different seafloor topography:Insights from the Rovuma Basin offshore East Africa

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Petroleum Science 2024年第1期21卷 125-142页

作者： Mei chen Sheng-He Wu Rui-Feng Wang jia-jia Zhang Peng-fei Xie Min Wang Xiao-Feng Wang Ji-Tao Yu Qi-Cong Xiong State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China College of Geosciences China University of Petroleum(Beijing)Beijing102249China Faculty of Geosciences University of BremenBremen28359Germany MARUM-Center for Marine and Environmental Sciences University of BremenBremen28359Germany Research institute of Petroleum Exploration and Development PetroChinaBeijing10083China School of Geosciences Yangtze UniversityWuhan 100083HubeiChina CNODC Mozambique Ltd. Beijing 100034China

Seafloor topography plays an important role in the evolution of submarine ***,it is still not so clear how the shape of slope affects the three-dimensional(3-D)architecture of submarine *** this study,we analyze the effect of topography factors on different hierarchical lobe architectures that formed during Pliocene to Quaternary in the Rovuma Basin offshore East *** characterize the shape,size and growth pattern of different hierarchical lobe architectures using 3-D seismic *** find that the relief of the topographic slope determines the location of preferential deposition of lobe complexes and single *** the topography is irregular and presents topographic lows,lobe complexes first infill these *** lobes are deposited preferentially at positions with higher longitudinal(***-slope)slope *** the longitudinal slope becomes higher,the aspect ratio of the single lobes ***(***-slope)topography does not seem to have a strong influence on the shape of single lobe,but it seems to affect the overlap of single *** the lateral slope gradient is relatively high,the single lobes tend to have a larger overlap ***,as the average of lateral slope and longitudinal slope gets greater,the width/thickness ratio of the single lobe is smaller,*** tend to accumulate *** results demonstrate that the shape of slopes more comprehensively influences the 3-D architecture of lobes in natural deep-sea systems than previously other lobe deposits and analogue experiments,which helps us better understand the development and evolution of the distal parts of turbidite systems.

关键词： Submarine fan Seafloor topography Sedimentary architecture Slope system SW Indian ocean

Linearized waveform inversion for vertical transversely isotropic elastic media:Methodology and multi-parameter crosstalk analysis

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Petroleum Science 2024年第1期21卷 252-271页

作者： Ke chen Lu Liu Li-Nan Xu fei Hu Yuan Yang jia-Hui Zuo Le-Le Zhang Yang Zhao National Key Laboratory of Petroleum Resources and Engineering Unconventional Petroleum Research InstituteChina University of Petroleum(Beijing)Beijing102249China Aramco Beijing Research Center Aramco AsiaBeijing100102China University of Lausanne LausanneCH-1015Switzerland Bureau of Geophysical Prospecting China National Petroleum CorporationZhuozhou 072750HebeiChina

Seismic migration and inversion are closely related techniques to portray subsurface images and identify hydrocarbon *** migration aims at obtaining structural images of subsurface geologic *** specifically,seismic migration estimates the reflectivity function(stacked average reflectivity or pre-stack angle-dependent reflectivity)from seismic reflection *** the other hand,seismic inversion quantitatively estimates the intrinsic rock properties of subsurface *** seismic inversion methods are applicable to detect hydrocarbon reservoirs that may exhibit lateral variations in the inverted *** there exist many differences,pre-stack seismic migration is similar with the first iteration of the general linearized seismic ***,seismic migration and inversion techniques assume an acoustic or isotropic elastic *** reservoirs such as shale and tight sand formation have notable anisotropic *** present a linearized waveform inversion(LWI)scheme for weakly anisotropic elastic media with vertical transversely isotropic(VTI)*** is based on two-way anisotropic elastic wave equation and simultaneously inverts for the localized perturbations(ΔVp_(0)/Vp_(0)/Vs_(0)/Vs_(0)/,Δ∈,Δδ)from the long-wavelength reference *** proposed VTI-elastic LWI is an iterative method that requires a forward and an adjoint operator acting on vectors in each *** derive the forward Born approximation operator by perturbation theory and adjoint operator via adjoint-state *** inversion has improved the quality of the images and reduces the multi-parameter crosstalk comparing with the adjoint-based *** have observed that the multi-parameter crosstalk problem is more prominent in the inversion images for Thomsen anisotropy ***,the Thomsen parameter is the most difficult to *** also analyze the multi-parameter crosstalk using scattering radiation patte

关键词： Elastic Anisotropy Least-squares imaging Waveform inversion Computational geophysics