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Free form deformation and symmetry constraint‐based multimodal brain image registration using generative adversarial nets

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CAAI Transactions on Intelligence Technology 2023年第4期8卷 1492-1506页

作者： Xingxing Zhu mingyue ding Xuming Zhang Department of Biomedical Engineering School of Life Science and TechnologyMinistry of Education Key Laboratory of Molecular BiophysicsHuazhong University of Science and TechnologyWuhanChina

Multi‐modal brain image registration has been widely applied to functional localisation,neurosurgery and computational anatomy.The existing registration methods based on the dense deformation fields involve too many parameters,which is not conducive to the exploration of correct spatial correspondence between the float and reference images.Meanwhile,the unidirectional registration may involve the deformation folding,which will result in the change of topology during registration.To address these issues,this work has presented an unsupervised image registration method using the free form deformation(FFD)and the symmetry constraint‐based generative adversarial networks(FSGAN).The FSGAN utilises the principle component analysis network‐based structural representations of the reference and float images as the inputs and uses the generator to learn the FFD model parameters,thereby producing two deformation fields.Meanwhile,the FSGAN uses two discriminators to decide whether the bilateral registration have been realised simultaneously.Besides,the symmetry constraint is utilised to construct the loss function,thereby avoiding the deformation folding.Experiments on BrainWeb,high grade gliomas,IXI and LPBA40 show that compared with state‐of‐the‐art methods,the FSGAN provides superior performance in terms of visual comparisons and such quantitative indexes as dice value,target registration error and computational efficiency.

关键词： Free‐form deformation Generative adversarial nets Multi‐modal brain image registration Structural representation Symmetry constraint

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CdS-sensitized 3D ordered macroporous g-C_(3)N_(4)for enhanced visible-light photocatalytic hydrogen generation

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Journal of Materials Science & Technology 2022年第16期111卷 204-210页

作者： Xuewen Wang Qiuchan Li Qingzhuo Lin Rongbin Zhang mingyue ding Key Laboratory of Jiangxi Province for Environment and Energy Catalysis College of ChemistryNanchang UniversityNanchang 330031China Key Laboratory of Accoutrement Technique in Fluid Machinery and Power Engineering Wuhan UniversityWuhan 430072China

Carbon nitride(g-C_(3)N_(4))is an attractive photocatalyst but commonly suffers from high photogenerated electron-hole recombination rate,low specific surface area,and narrow visible-light response range.Herein,3D ordered macroporous(3DOM)g-C_(3)N_(4)/CdS was constructed by a feasible and inexpensive synthesis strategy of using template and light-assisted methods to solve the above problems.The formed heterostructure with suitable morphology,band structure,and extended light absorption range is beneficial to promoting photocatalytic Hgeneration.3DOM g-C_(3)N_(4)/Cd S exhibits a high Hproduce rate of718.6μmol hg,which is 73.3 times higher than that of g-C_(3)N_(4)and 25.4 times higher than that of3DOM g-C_(3)N_(4).The 3DOM structure can effectively increase the path length of light of g-C_(3)N_(4),improve the light energy conversion efficiency,and shorten the carrier transport distance.CdS enhances visiblelight response and produces many surface sites.Constructing a stable and tight interface between 3DOM g-C_(3)N_(4)and Cd S can promote the migration of photogenerated electrons and holes and consequently the visible-light catalytic activity.This study offers an effective designing strategy for heterostructure photocatalysts to achieve high activity and stable solar H2production.

关键词： Carbon nitride CdS Macropore Photocatalytic H2 evolution

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Promoting catalysis activity with optimizable self-generated Co-Fe alloy nanoparticles for efficient CO_(2)electrolysis performance upgrade

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Nano Research 2023年第8期16卷 10992-10999页

作者： Kun Zhang Dong Zhang Yao Wang Yihang Li Cong Ren mingyue ding Tong Liu Key Laboratory of Hydraulic Machinery Transients(Wuhan University) Ministry of EducationSchool of Power and Mechanical EngineeringThe Institute of Technological SciencesWuhan UniversityWuhan 430072China Key Laboratory of Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan 430205China Interdisciplinary Research Center of Smart Sensors Academy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Department of Applied Chemistry School of Advanced Materials and NanotechnologyXidian UniversityXi’an 710071China

Stable and flexible metal nanoparticles(NPs)with regeneration ability are critical for long-term operation of solid oxide electrolysis cells(SOECs).Herein,a novel perovskite electrode with stoichiometric Pr_(0.4)Sr_(0.6)Co_(0.125)Fe_(0.75)Mo_(0.125)O_(3)−δ(PSFCM)is synthesized and studied,which undergoes multiple redox cycles to validate its structural stability and NPs reversibility.The Co-Fe alloy has exsolved from the parent bulk under reducing atmosphere,and is capable of reincorporation into the parent oxide after re-oxidation treatment.During the redox process,we successfully manipulate the size and population density of the exsolved NPs,and find that the average particle size significantly reduces but the population density increases correspondingly.The electrode polarization resistance of the symmetric cell remains stable for 450 h,and even activates after the redox cycling,which may be attributed to the higher quantity and larger specific surface area of the regenerated Co-Fe alloy NPs.Moreover,the electrochemical performance towards carbon dioxide reduction reaction(CO_(2)RR)is evaluated,and the CO_(2)electrolyzer consisting of CoFe@PSCFM-Ce_(0.8)Sm_(0.2)O_(1.9)(SDC)dual-phase electrode exhibits an excellent current density of 1.42 A·cm^(−2)at 1.6 V,which reaches 1.7 times higher than 0.83 A·cm^(−2)for the pristine PSCFM electrode.Overall,with this flexible and reversible high-performance SOEC cathode material,new options and perspectives are provided for the efficient and durable CO_(2)electrolysis.

关键词： redox stability in situ exsolution regeneration carbon dioxide reduction reaction perovskite

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3D multipath planning for UAV based on network graph

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Journal of Systems Engineering and Electronics 2011年第4期22卷 640-646页

作者： Xin Liu Chengping Zhou mingyue ding Institute for Pattern Recognition and Artificial Intelligence Key Laboratory of National Defense Science and Technology forMulti-spectral Information Processing Technologies Huazhong University of Science and Technology Wuhan 430074 R R. China School of Life Science and Technology Image Processing and Intelligence Control Key Laboratory of Education Ministry of China Huazhong University of Science and Technology Wuhan 430072 P. R. China

According to the characteristic and the requirement of multipath planning, a new multipath planning method is proposed based on network. This method includes two steps： the construction of network and multipath searching. The construction of network proceeds in three phases： the skeleton extraction of the configuration space, the judgment of the cross points in the skeleton and how to link the cross points to form a network. Multipath searching makes use of the network and iterative penalty method （IPM） to plan multi-paths, and adjusts the planar paths to satisfy the requirement of maneuverability of unmanned aerial vehicle （UAV）. In addition, a new height planning method is proposed to deal with the height planning of 3D route. The proposed algorithm can find multiple paths automatically according to distribution of terrain and threat areas with high efficiency. The height planning can make 3D route following the terrain. The simulation experiment illustrates the feasibility of the proposed method.

关键词： path planning skeleton graph iterative penaltymethod （IPM） network graph.

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Study of Manganese Promoter on a Precipitated Iron-Based Catalyst for Fischer-Tropsch Synthesis

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Journal of Natural Gas Chemistry 2007年第3期16卷 278-285页

作者： Zhichao Tao Yong fang Chenghua Zhang Tingzhen Li mingyue ding Hongwei Xiang Yongwang Li State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan 030001 Shanxi China Graduate University of Chinese Academy of Sciences Beijing 100039 China

The effects of Manganese （Mn） incorporation on a precipitated iron-based Fischer-Tropsch synthesis （FTS） catalyst were investigated using N2 physical adsorption, air differential thermal analysis （DTA）, H2 temperature-programmed reduction （TPR）, and Mǒssbauer spectroscopy. The FTS performances of the catalysts were tested in a slurry phase reactor. The characterization results indicated that Mn increased the surface area of the catalyst, and improved the dispersion of （α-Fe2O3 and reduced its crystallite size as a result of the high dispersion effect of Mn and the Fe-Mn interaction. The Fe-Mn interaction also suppressed the reduction of （α-Fe2O3 to Fe3O4, stabilized the FeO phase, and （or） decreased the carburization degree of the catalysts in the H2 and syngas reduction processes. In addition, incorporated Mn decreased the initial catalyst activity, but improved the catalyst stability because Mn restrained the reoxidation of iron carbides to Fe3O4, and improved further carburization of the catalysts. Manganese suppressed the formation of CH4 and increased the selectivity to light olefins （C2-4^=）, but it had little effect on the selectivities to heavy （C5＋） hydrocarbons. All these results indicated that the strong Fe-Mn interaction suppressed the chemisorptive effect of the Mn as an electronic promoter, to some extent, in the precipitated iron-manganese catalyst system.

关键词： Fischer-Tropsch synthesis iron-manganese catalyst manganese promoter Fe-Mn interaction

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A REVIEW ON ARTERY WALL SEGMENTATION TECHNIQUES AND INTIMA-MEDIA THICKNESS MEASUREMENT FOR CAROTID ULTRASOUND IMAGES

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Journal of Innovative Optical Health Sciences 2012年第1期5卷 75-84页

作者： XIN YANG WANJI HE KAITONG LI JIAOYING JIN XUMING ZHANG MING YUCHI mingyue ding State Key Laboratory for Multi-Spectral Information Processing Technologies Institute for Pattern Recognition and Artificial Intelligence(IPRAI)Huazhong University of Science and Technology Wuhan 430074HubeiChina Image Processing and Intelligence Control Key Laboratory of Education Ministry of China School of Life Science and Technology Huazhong University of Science and Technology Wuhan 430074HubeiChina

Stroke and heart attack,which could be led by a kind of cerebrovascular and cardiovascular disease named as atherosclerosis,would seriously cause human morbidity and mortality.It is important for the early stage diagnosis and monitoring medical intervention of the atherosclerosis.Carotid stenosis is a classical atherosclerotic lesion with vessel wall narrowing down and accumulating plaques burden.The carotid artery of intima-media thickness(IMT)is a key indicator to the disease.With the development of computer assisted diagnosis technology,the imaging techniques,segmentation algorithms,measurement methods,and evaluation tools have made considerable progress.Ultrasound imaging,being real-time,economic,reliable,and safe,now seems to become a standard in vascular assessment methodology especially for the measurement of IMT.This review firstly attempts to discuss the clinical relevance of measurements in clinical practice at first,and then followed by the challenges that one has to face when approaching the segmentation of ultrasound images.Secondly,the commonly used methods for the IMT segmentation and measurement are presented.Thirdly,discussion and evaluation of different segmentation techniques are performed.An overview of summary and future perspectives is given finally.

关键词： Ultrasound(US)images carotid artery intima-media thickness(IMT) atherosclerosis image segmentation computer assisted diagnosis(CAD)

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基于感官评价的橄榄鲜食品质差异代谢组分析

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中国农业科学 2024年第2期57卷 363-378页

作者：谢倩江来丁明月刘玲玲陈清西福建农林大学园艺学院

【目的】筛选影响橄榄鲜食品质的关键代谢物，探究橄榄鲜食品质差异的可能代谢机制。【方法】以4个高接换种橄榄品种（系）果实为试验材料，高接砧木为‘惠圆’，采用感官评价进行鲜食品质评价，通过超高效液相色谱-串联质谱（UPLC-MS/M... 详细信息

【目的】筛选影响橄榄鲜食品质的关键代谢物，探究橄榄鲜食品质差异的可能代谢机制。【方法】以4个高接换种橄榄品种（系）果实为试验材料，高接砧木为‘惠圆’，采用感官评价进行鲜食品质评价，通过超高效液相色谱-串联质谱（UPLC-MS/MS）联用技术进行代谢物鉴定及KEGG通路分析，探究果实成熟过程的代谢变化。【结果】4个品种（系）橄榄果实鲜食品质的感官评价结果差异显著，‘甜榄1号’‘东山长穗’鲜食品质好，‘惠圆’‘子阳1号’鲜食品质差；4个品种（系）橄榄果实共鉴定到15类651个代谢物，其中初级代谢产物6类277个，次级代谢产物9类365个；基于变量投影重要性与差异倍数筛选出26个影响橄榄鲜食品质的特征差异代谢物，包括氨基酸及其衍生物（6个）、有机酸（2个）、脂质（2个）、酚类化合物（16个），其中酚类化合物包括酚酸（3个）、黄酮（3个）、黄酮醇（2个）、黄烷醇（3个）以及水解单宁（5个），并结合橄榄成熟过程建立了造成鲜食品质差异的代谢网络，鲜食品质好的橄榄在L-天冬酰胺与N,N-二甲基甘氨酸生物合成代谢途径上积累较高，体现在鲜食口感上与回甘度有关；鲜食品质差的橄榄在水解单宁（二酰基诃子酰基葡萄糖、没食子酰没食子酸甲酯、榛子素A）、黄酮醇[桑色素-3-O-木糖苷、槲皮素-3-O-(6′没食子酰)半乳糖苷]、黄烷-3-醇[7-O-没食子酰基特利色黄烷、儿茶素-（7,8-bc）-4α-(3,4-二羟基苯基)-二氢-2-(3H)-酮、儿茶素-（7,8-bc）-4β-(3,4-二羟基苯基)-二氢-2-(3h)-酮]合成途径上积累较高，体现在鲜食口感上与苦涩味有关。【结论】不同橄榄鲜食品质差异与其成熟过程中氨基酸及其衍生物合成途径和水解单宁、黄酮醇、黄烷-3-醇合成途径的积累差异密切相关。

关键词：橄榄感官评价鲜食品质广泛靶向代谢组特征代谢物

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316L不锈钢电解抛光的MATLAB图像定量分析

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电镀与精饰 2024年第1期46卷 97-104页

作者：周赵琪丁明玥朱晴晴何康汪玉王振卫上海应用技术大学化学与环境工程学院上海201418

基于机器视觉的不锈钢表面无损检测方法正受到工业界关注并得到研究人员的探索与开发。本研究使用MATLAB对电解抛光的316L不锈钢表面金相图进行图像二值化处理,保留区域点蚀和过抛腐蚀区的黑色像素点和黑色区域,除去浅色划痕和不明显的... 详细信息

基于机器视觉的不锈钢表面无损检测方法正受到工业界关注并得到研究人员的探索与开发。本研究使用MATLAB对电解抛光的316L不锈钢表面金相图进行图像二值化处理,保留区域点蚀和过抛腐蚀区的黑色像素点和黑色区域,除去浅色划痕和不明显的凹凸区域。图像腐蚀处理选取半径为3个像素点的圆形结构元素为参数,去除图像噪声,增强图像黑色像素区域边界和对比度。选取图像的黑色像素占比和点蚀区域数量作为特征变量,并通过对特征变量进行测量和计数来评估抛光效果。在此基础上,借助MATLABGUI编程平台开发了一个基于图像定量分析过程的抛光效果评估程序,应用该程序可快速获得316L不锈钢电解抛光材料点蚀定量数据,使金相图片分析数值化,弥补主观判断的不足。该方法得到的结果与基于探针式粗糙度测量的优化结果一致。

关键词：图像定量分析 MATLABGUI 点蚀电解抛光 316L不锈钢

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制备方法对InZr复合氧化物/SAPO-34催化剂CO_(2)加氢制备低碳烯烃性能的影响

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燃料化学学报（中英文） 2024年第6期52卷 790-799页

作者：郭帅冯礼奎于志勇许狄刘凯迪宋小宁程一杰曹求洋王光辉定明月杭州意能电力技术有限公司浙江杭州310014 国网浙江省电力有限公司电力科学研究院浙江杭州310014 武汉大学动力与机械学院湖北武汉430072

低碳烯烃是重要的化工原料,乙烯更是作为衡量一个国家石油化工发展水平的重要标志,使用CO_(2)催化加氢制备低碳烯烃是实现CO_(2)高值化利用的重要途径。在众多催化剂中,InZr复合氧化物/SAPO-34催化剂因其高低碳烯烃选择性和高稳定性展... 详细信息

低碳烯烃是重要的化工原料,乙烯更是作为衡量一个国家石油化工发展水平的重要标志,使用CO_(2)催化加氢制备低碳烯烃是实现CO_(2)高值化利用的重要途径。在众多催化剂中,InZr复合氧化物/SAPO-34催化剂因其高低碳烯烃选择性和高稳定性展现出潜在的研究和应用前景。本工作研究了不同制备方法对InZr复合氧化物/SAPO-34催化剂CO_(2)加氢制备低碳烯烃的影响,结果表明,共沉淀法制备的催化剂具有最高的催化活性,溶胶凝胶-沉积法制备的催化剂具有最高的低碳烯烃选择性,并结合多种表征手段揭示了InZr复合氧化物/SAPO-34催化剂内在构效关系。

关键词： CO_(2)催化加氢低碳烯烃 InZr复合氧化物 SAPO-34 构效关系

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Two Modifications of Weight Calculation of the Non-Local Means Denoising Method

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Engineering（科研） 2013年第10期5卷 522-526页

作者： Musab Elkheir Salih Xuming Zhang mingyue ding School of Life Science and Technology Huazhong University of Science and Technology Wuhan China

The non-local means (NLM) denoising method replaces each pixel by the weighted average of pixels with the sur-rounding neighborhoods. In this paper we employ a cosine weighting function instead of the original exponential func-tion to improve the efficiency of the NLM denoising method. The cosine function outperforms in the high level noise more than low level noise. To increase the performance more in the low level noise we calculate the neighborhood si-milarity weights in a lower-dimensional subspace using singular value decomposition (SVD). Experimental compari-sons between the proposed modifications against the original NLM algorithm demonstrate its superior denoising per-formance in terms of peak signal to noise ratio (PSNR) and histogram, using various test images corrupted by additive white Gaussian noise (AWGN).

关键词： Non-Local Means Singular Value Decomposition Weight Calculation

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