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International Journal of Ophthalmology(English edition) 2024年第4期17卷 610-615页

作者： Jie Wang Su-Zhen Wang Xiao-Lin Qin meng Chen Heng-Ming Zhang Xin Liu meng-jun xiang Jian-Bin Hu Hai-Yu Huang Chang-jun Lan Aier Eye Hospital(East of Chengdu) Chengdu 610051Sichuan ProvinceChina Department of Ophthalmology Chengdu First People’s HospitalChengdu 610095Sichuan ProvinceChina School of Computer and Artificial Intelligence Southwest Jiaotong UniversityChengdu 610097Sichuan ProvinceChina Chengdu Aier Eye Hospital Chengdu 610041Sichuan ProvinceChina

AIM:To propose an algorithm for automatic detection of diabetic retinopathy(DR)lesions based on ultra-widefield scanning laser ophthalmoscopy(SLO).METHODS:The algorithm utilized the FasterRCNN(Faster Regions with CNN features)+ResNet50(Residua Network 50)+FPN(Feature Pyramid Networks)method for detecting hemorrhagic spots,cotton wool spots,exudates,and microaneurysms in DR ultra-widefield *** segmentation combined with a deeper residual network FasterRCNN+ResNet50 was employed for feature extraction to enhance intelligent learning *** fusion was carried out by the feature pyramid network FPN,which significantly improved lesion detection rates in SLO fundus ***:By analyzing 1076 ultra-widefield SLO images provided by our hospital,with a resolution of 2600×2048 dpi,the accuracy rates for hemorrhagic spots,cotton wool spots,exudates,and microaneurysms were found to be 87.23%,83.57%,86.75%,and 54.94%,***:The proposed algorithm demonstrates intelligent detection of DR lesions in ultra-widefield SLO,providing significant advantages over traditional fundus color imaging intelligent diagnosis algorithms.

关键词： diabetic retinopathy ultra-widefield scanning laser ophthalmoscopy intelligent diagnosis system

Theoretical Studies on the Hydrogen Bond Transfer and Proton Transfer between Anamorphoses of the Dihydrated Glycine Complex

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Chinese Journal of Structural Chemistry 2007年第5期26卷 580-586页

作者： WANG Ke-Cheng meng xiang-jun SHI Jin LI Bing-Huan Department of Chemistry Tangshan Teacher＇s College Tangshan 063000 China

The conversion between anamorphoses of the dihydrated glycine complex was studied by means of B3LYP/6-31＋＋G^＊＊. It was found that proton transfer was accompanied by hydrogen bond transfer in the process of conversion between different kinds of anamorphoses. With proton transfer, the electrostatic action was notably increased and the hydrogen-bonding action was evidently strengthened when the dihydrated neutral glycine complex converts into dihydrated zwitterionic glycine complex. The activation energy required for hydrogen bond transfer between dihydrated neutral glycine complexes is very low （6.32 kJ·mol^-1）; however, the hydrogen bond transfer between dihydrated zwitterionic glycine complexes is rather difficult with the required activation energy of 13.52 kJ·mol^-1 due to the relatively strong electrostatic action. The activation energy required by proton transfer is at least 27.33 kJ·mol^-1, higher than that needed for hydrogen bond transfer. The activation energy for either hydrogen bond transfer or proton transfer is in the bond-energy scope of medium-strong hydrogen bond, so the four kinds of anamorphoses of the dihydrated glycine complex could convert mutually.

关键词： intermolecular interaction B3LYP glycine,hydrogen bond transfer proton transfer

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扶正化瘀胶囊对肝纤维化发展的影响

肝脏 2024年第4期29卷 429-431,452页

作者：黄欣孟祥军吴莘上海交通大学医学院附属第九人民医院消化科 200011 上海交通大学医学院附属第九人民医院急诊科 200011

目的探讨扶正化瘀胶囊(FZHY)对肝纤维化发展的影响。方法CCK-8法检测FZHY对LX-2细胞活性的影响。RT-qPCR和Western blot法测定LX-2转染TGF-β或/和给予FZHY后α-SMA水平。选取2022年1月至2022年12月在上海第九人民医院接受抗病毒治疗的... 详细信息

目的探讨扶正化瘀胶囊(FZHY)对肝纤维化发展的影响。方法CCK-8法检测FZHY对LX-2细胞活性的影响。RT-qPCR和Western blot法测定LX-2转染TGF-β或/和给予FZHY后α-SMA水平。选取2022年1月至2022年12月在上海第九人民医院接受抗病毒治疗的慢性乙型肝炎患者80例作为研究对象,分为对照组和治疗组,治疗组每日口服扶正化瘀胶囊1.5 g,一日3次,瞬时弹性成像检查各组治疗前后瞬时肝弹性F值。结果FZHY明显抑制LX-2生长,并与剂量呈正相关(P0.05)。结论FZHY可通过影响LX-2细胞增殖、调节α-SMA表达来实现抗纤维化作用。

关键词：肝纤维化肝星状细胞扶正化瘀胶囊

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激光熔覆Co-2%Ti_(3)SiC_(2)复合涂层在不同温度及载荷下的摩擦学性能

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材料热处理学报 2024年第2期45卷 156-163页

作者：孟祥军欧阳春生刘秀波罗迎社许继星王威肖敏卢迎李梓祥江苏城乡建设职业学院公用事业学院江苏常州213147 湖南交通工程学院交通运输工程学院湖南衡阳421000 中南林业科技大学材料表界面科学与技术湖南省重点实验室湖南长沙410004

为了提高304不锈钢的耐磨减摩性能,采用激光熔覆技术在其表面制备了Co-2%Ti_(3)SiC_(2)复合涂层。通过扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对Co-2%Ti_(3)SiC_(2)复合涂层的微观结构进行表征,并分析了304不锈钢基体与Co-2%Ti_(... 详细信息

为了提高304不锈钢的耐磨减摩性能,采用激光熔覆技术在其表面制备了Co-2%Ti_(3)SiC_(2)复合涂层。通过扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对Co-2%Ti_(3)SiC_(2)复合涂层的微观结构进行表征,并分析了304不锈钢基体与Co-2%Ti_(3)SiC_(2)复合涂层在等温摩擦实验(25和600℃)中不同载荷(2、5和8 N)下的摩擦学性能和磨损机理。结果表明:Co-2%Ti_(3)SiC_(2)复合涂层主要由γ-Co固溶体,硬质相Fe_(2)C、Cr_(7)C_(3)和TiC及润滑相Ti_(3)SiC_(2)组成。Co-2%Ti_(3)SiC_(2)复合涂层的平均显微硬度为358.61 HV0.5,约是304不锈钢基体(239.32 HV0.5)的1.5倍。在等温摩擦实验中,Co-2%Ti_(3)SiC_(2)复合涂层的磨损率均随着载荷的增加而减少,而摩擦系数在室温下随载荷的增加先增大后减小,在高温(600℃)下随载荷的增加而减小。在不同温度及载荷下,Co-2%Ti_(3)SiC_(2)复合涂层的磨损机理略有不同。

关键词： 304不锈钢 Co-2%Ti_(3)SiC_(2)复合涂层激光熔覆摩擦学性能

Theoretical Studies on the Stabilities and Hydrogen Bond Actions of (H_2O)_n Clusters

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Chinese Journal of Structural Chemistry 2006年第9期25卷 1078-1084页

作者： meng xiang-jun WANG Ke-Cheng WU Wen-Sheng LI Bing-Huan WANG De-Jin Department of Chemistry Tangshan Teacher＇s College Tangshan Hebei 063000 China Department of Light Industrv and Chemistry Zhaoqing University Guangdong 526061 China

The stable configurations and hydrogen bond nature of （H2O）n clusters （n = 3-6） have been investigated by the B3LYP method at the 6-31＋＋g^＊＊ level. Upon calculation, four conclusions have been drawn：（1） In the （H2O）3-5 clusters, cyclic configurations were confirmed to be the most stable. But in the （H2O）3-4 ones, only cyclic configurations could be observed. From n = 5 （（H2O）5 clusters）, three-dimensional configuration could be found：（2） In the （H2O）6 clusters, all configurations are inclined to be three-dimensional except the most stable configuration which is cyclic; （3） The stable order of （H2O）6 clusters indicates that it is the arrangement of hydrogen bond that plays a decisive role in the cluster stabilities, the zero-point energy is also important, and cluster stabilities are independent on the number of hydrogen bonds; （4） There exist strong cooperativity and superadditivity in the （H2O）n clusters.

关键词： quantum chemistry B3LYP (H2O)n clusters hydrogen bond cooperativity

Restricted Arc-Connectivity of Harary Digraphs

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Journal of the Operations Research Society of China 2024年第2期12卷 540-547页

作者： jun-Hao Zhang Ji-xiang meng College of Mathematics and System Science Xinjiang UniversityUrumqi 830046XinJiangChina

The h-restricted arc-connectivity of a digraph is an important parameter to measure fault-tolerance of interconnection *** paper determines that the h-restricted arc-connectivity of the Harary digraph D=G(n;1,2,.:,k)i... 详细信息

关键词： Restricted arc-connectivity λ_(h)(D) Super-λ_(h) λ_(h)-Atom λ_(h)-Superatom

西北干旱区10份披碱草属种质表型遗传多样性分析

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草地学报 2024年第8期32卷 2531-2539页

作者：张秀山祁娟孟祥君沈李瑜独双双杜旺毅路欣祁希明甘肃农业大学草业学院草业生态系统教育部重点实验室甘肃省草业工程实验室中-美草地畜牧业可持续研究中心甘肃兰州730070 甘肃省草原技术推广总站甘肃兰州730050

测定10份不同生境来源野生披碱草属(Elymus L.)种质24个表型性状,探究其表型性状的遗传变异规律,为西北干旱区优异种质材料的选育提供理论依据。结果表明:供试材料表型性状的遗传多样性指数介于1.17~1.89,其中种子长、株高和千粒重的遗... 详细信息

测定10份不同生境来源野生披碱草属(Elymus L.)种质24个表型性状,探究其表型性状的遗传变异规律,为西北干旱区优异种质材料的选育提供理论依据。结果表明:供试材料表型性状的遗传多样性指数介于1.17~1.89,其中种子长、株高和千粒重的遗传多样性指数较大,分别为1.89,1.83和1.75。24个表型性状的变异系数介于5.23%~51.98%,整体表现为茎叶部性状变异大于穗部和种子性状。相关性分析表明,表型性状与经度有一定的相关性,其中茎粗、穗下茎长、小穗长、种子长和千粒重受显著影响(P<0.05)。通过聚类分析,将10份材料划分为4大类,其中第Ⅰ、Ⅲ类群表现一般,可作为一般种质保存;第Ⅱ类群作为饲草育种材料保存,第Ⅳ类群作为抗倒伏和生产种子材料保存。利用主成分综合分析发现,E8,E7,E6和E5四份种质在甘肃河西地区综合表现优良,可进一步引种驯化。

关键词：披碱草属表型性状遗传多样性种质资源

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大容积下涂料均质化技术研究

现代涂料与涂装 2024年第6期27卷 14-16页

作者：谭植文何信学王飞孟祥军宋晶中国船舶集团长江科技有限公司大连船舶重工集团有限公司

重防腐涂料在长时间的贮存过程中，特别是大容积涂料桶中长时间贮存会出现分层现象，导致涂料涂层不均匀或涂料不能使用，且重防腐涂料多为双组分涂料，所以涂料使用前必须搅拌均匀。为探究不同搅拌方式对大容积下涂料相关性能的影响，... 详细信息

重防腐涂料在长时间的贮存过程中，特别是大容积涂料桶中长时间贮存会出现分层现象，导致涂料涂层不均匀或涂料不能使用，且重防腐涂料多为双组分涂料，所以涂料使用前必须搅拌均匀。为探究不同搅拌方式对大容积下涂料相关性能的影响，从搅拌器结构、搅拌时间及搅拌速度3个因素对涂料进行均质化搅拌试验，测得搅拌后涂料的黏度和固化成型后的涂膜附着力，并对试验结果进行分析，验证不同搅拌方式对大容积下涂料性能的影响规律。

关键词：双组分涂料搅拌器结构涂料黏度涂膜附着力

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水合甘氨酸体系水桥式质子迁移的理论研究

化学学报 2011年第11期69卷 1273-1279页

作者：孟祥军唐山师范学院化学系唐山063000

水分子与甘氨酸作用会导致甘氨酸羧基上的质子迁移到氨基上,质子可以通过水分子链进行迁移.采用密度泛函理论的B3LYP/6-31++g**方法研究了水分子链的逐渐增长(1～5个水分子)对质子迁移的影响,发现水分子数少于5时,质子迁移一步完成;水... 详细信息

水分子与甘氨酸作用会导致甘氨酸羧基上的质子迁移到氨基上,质子可以通过水分子链进行迁移.采用密度泛函理论的B3LYP/6-31++g**方法研究了水分子链的逐渐增长(1～5个水分子)对质子迁移的影响,发现水分子数少于5时,质子迁移一步完成;水分子数为5时,质子迁移经由一个中间体,需两步完成;水分子链的增长使质子迁移反应的自由能改变值越来越低,但是反应的能垒越来越高,即在热力学上有利于质子迁移反应,在动力学上不利于质子迁移反应.

关键词：水合甘氨酸质子迁移两性离子水桥链密度泛函理论

A comprehensive analysis of DAC-SDC FPGA low power object detection challenge

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Science China(Information Sciences) 2024年第8期67卷 300-320页

作者： Jingwei ZHANG Guoqing LI meng ZHANG Xinye CAO Yu ZHANG xiang LI Ziyang CHEN jun YANG School of Electronics Science and Engineering Southeast University

The lower power object detection challenge(LPODC) at the IEEE/ACM Design Automation Conference is a premier contest in low-power object detection and algorithm(software)-hardware co-design for edge artificial intelligence, which has been a success in the past five years. LPODC focused on designing and implementing novel algorithms on the edge platform for object detection in images taken from unmanned aerial vehicles(UAVs), which attracted hundreds of teams from dozens of countries to participate. Our team SEUer has been participating in this competition for three consecutive years from 2020 to 2022 and obtained sixth place respectively in 2020 and 2021. Recently, we achieved the championship in 2022. In this paper, we presented the LPODC for UAV object detection from 2018 to 2022, including the dataset, hardware platform,and evaluation method. In addition, we also introduced and discussed the details of methods proposed by each year's top three teams from 2018 to 2022 in terms of network, accuracy, quantization method, hardware performance, and total score. Additionally, we conducted an in-depth analysis of the selected entries and results, along with summarizing representative methodologies. This analysis serves as a valuable practical resource for researchers and engineers in deploying the UAV application on edge platforms and enhancing its feasibility and reliability. According to the analysis and discussion, it becomes evident that the adoption of a hardware-algorithm co-design approach is paramount in the context of tiny machine learning(TinyML).This approach surpasses the mere optimization of software and hardware as separate entities, proving to be essential for achieving optimal performance and efficiency in TinyML applications.

关键词： tiny machine learning object detection convolutional neural networks algorithm-hardware co-design low power field programmable gate array

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