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Influence of Various Earth-Retaining Walls on the Dynamic Response Comparison Based on 3D Modeling

Computer Modeling in Engineering & sciences 2024年第6期139卷 2835-2863页

作者： Muhammad Akbar Huali Pan Jiangcheng huang Bilal Ahmed Guoqiang ou Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu610000China Institute of International Rivers and Eco-security Yunnan UniversityKunming650500China Department of structural Engineering Faculty of Civil EngineeringDoctoral SchoolAkademicka 2Silesian University of TechnologyGliwice44-100Poland

The present work aims to assess earthquake-induced earth-retaining(ER)wall *** study is on the dynamics analysis of various earth-retaining wall designs in hollow precast concrete panels,reinforcement concrete facing panels,and gravity-type earth-retaining *** finite element(FE)simulations utilized a 3D plane strain condition to model full-scale ER walls and numerous nonlinear dynamics *** seismic performance of differentmodels,which includes reinforcement concrete panels and gravity-type and hollowprecast concrete ER walls,was simulated and examined using the FE *** also displays comparative studies such as stress distribution,deflection of the wall,acceleration across the wall height,lateral wall displacement,lateral wall pressure,and backfill plastic *** components of the created ER walls were found throughout this research *** is a granular reinforcement backfill,while the other is a wall-facing panel and base *** dynamic response effects of varied earth-retaining walls have also been *** was discovered that the facing panel of the model significantly impacts the earthquake-induced displacement of ER *** proposed analytical model’s validity has been evaluated and compared with the reinforcement concrete facing panels,gravity-type ER wall,scientifically available data,and American Association of state Highway and Transportation Officials(AAsHTO)guidelines results based on FE *** results of the observations indicate that the hollow prefabricated concrete ER wall is the most feasible option due to its lower displacement and high-stress distribution compared to the two *** methodology and results of this study establish standards for future analogous investigations and professionals,particularly in light of the increasing computational capabilities of desktop computers.

关键词： seismic analysis finite element modeling earth-retaining ER walls dynamic response structural resilience

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Predicting microbial extracellular electron transfer activity in paddy soils with soil physicochemical properties using machine learning

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science China(Technological sciences) 2024年第1期67卷 259-270页

作者： ou JiaJun LUO Xiaoshan LIU Junyang huang LinYan ZHou LiHua YUAN Yong school of Automation Guangdong University of TechnologyGuangzhou 510006China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangzhou Key Laboratory Environmental Catalysis and Pollution ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China school of Biomedical and Pharmaceutical sciences Guangdong University of TechnologyGuangzhou 510006China

soil extracellular electron transfer(EET)is a pivotal biological process within the realm of ***,EET suffers from a lack of predictive ***,an intricately crafted machine learning model has been developed for the purpose of predicting soil EET by using the physicochemical properties of soil as independent input variables and the EET capabilities in terms of current density(j_(max))and Coulombic charge(C_(out))as dependent output *** autoencoder ensemble stacking(AEs)model was developed to address the aforementioned issue by integrating support vector machine,multilayer perceptron,extreme gradient boosting,and light gradient boosting machine algorithms as the stacking *** 10-fold crossvalidation,the AEs model exhibited notable improvements in predicting j_(max)and C_(out),with average test R^(2)values of 0.83 and 0.84,respectively,surpassing those of single machine learning(ML)models and the basic ensemble *** utilizing partial correlation plots(PDPs),shapley Additive explanations(sHAP)values,and sHAP decision plots,we quantitatively explained the impact and contribution of the input molecules on the AEs model’s predictions of j_(max)and C_(out).In the context of the sHAP method for the AEs model,total carbon(TC)was identified as the most correlated descriptor for j_(max),while total organic carbon(TOC)stood out as the most relevant descriptor for C_(out).In the prediction tasks of j_(max)and C_(out)within the AEs model,employing a multitask ML approach allowed the model to benefit from the shared information of input variables,thereby enhancing its overall *** study provides a feasible tool for the prediction of soil EET from soil physiochemical properties and an advanced understanding of the relationship between soil physiochemical properties and EET capability.

关键词： extracellular electron transfer paddy soil machine learning prediction autoencoder ensemble stacking model

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Gut microbiota induced abnormal amino acids and their correlation with diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2024年第5期17卷 883-895页

作者： sheng-Qun Jiang su-Na Ye Yin-Hua huang Yi-Wen ou Ke-yang Chen Jian-su Chen shi-Bo Tang Aier Eye Hospital Jinan UniversityGuangzhou 510000Guangdong ProvinceChina Aier Eye Institute and Changsha Aier Hospital Changsha 410000Hunan ProvinceChina The First Affiliated Hospital of Bengbu Medical University Bengbu 233000Anhui ProvinceChina school of Public Health Anhui Medical UniversityHefei 230000Anhui ProvinceChina

AIM:To explore the correlation of gut microbiota and the metabolites with the progression of diabetic retinopathy(DR)and provide a novel strategy to elucidate the pathological mechanism of ***:The fecal samples from 32 type 2 diabetes patients with proliferative retinopathy(PDR),23 with nonproliferative retinopathy(NPDR),27 without retinopathy(DM),and 29 from the sex-,age-and BMI-matched healthy controls(29 HC)were analyzed by 16s rDNA gene *** fecal samples from PDR,DM,and HC groups were assayed by untargeted *** metabolites were measured using liquid chromatographymass spectrometry(LC-Ms)*** between gut microbiota and fecal metabolites were ***:A cluster of 2 microbiome and 12 metabolites accompanied with the severity of DR,and the close correlation of the disease progression with PDR-related microbiome and metabolites were *** be specific,the structure of gut microbiota differed in four *** and richness of gut microbiota were significantly lower in PDR and NPDR groups,than those in DM and HC groups.A cluster of microbiome enriched in PDR group,including Pseudomonas,Ruminococcaceae-UCG-002,Ruminococcaceae-UCG-005,Christensenellaceae-R-7,was *** analysis showed that the glucose and nicotinate degradations were significantly higher in PDR group than those in HC ***,serine,ornithine,and arachidonic acid were significantly enriched in PDR group,while proline was enriched in HC *** analysis illustrated that arginine biosynthesis,lysine degradation,histidine catabolism,central carbon catabolism in cancer,D-arginine and D-ornithine catabolism were elevated in PDR *** analysis revealed that Ruminococcaceae-UCG-002 and Christensenellaceae-R-7 were positively associated with L-arginine,ornithine levels in fecal ***:This study elaborates the different microbiota structure in the gut from four *** relative abundance of

关键词： proliferative retinopathy gut microbiota Ruminococcaceae amino acid metabolism arginine

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Lithium-Ion Charged Polymer Channels Flattening Lithium Metal Anode

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Nano-Micro Letters 2024年第4期16卷 379-393页

作者： Haofan Duan Yu You Gang Wang Xiangze ou Jin Wen Qiao huang Pengbo Lyu Yaru Liang Qingyu Li Jianyu huang Yun‑Xiao Wang Hua‑Kun Liu shi Xue Dou Wei‑Hong Lai Hunan Provincial Key Laboratory of Thin Film Materials and Devices School of Material Sciences and EngineeringXiangtan UniversityXiangtan 411105People’s Republic of China Guangxi Key Laboratory of Low Carbon Energy Materials School of Chemical and Pharmaceutical ScienceGuangxi Normal UniversityGuilin 541004People’s Republic of China Institute for superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongInnovation CampusSquires WayNorth WollongongNSW 2500Australia Institute of Energy Materials science University of Shanghai for Science and TechnologyShanghai 200093People’s Republic of China

The concentration difference in the near-surface region of lithium metal is the main cause of lithium dendrite *** this issue will be key to achieving high-performance lithium metal batteries(LMBs).Herein,we construct a lithium nitrate(LiNO_(3))-implanted electroactiveβphase polyvinylidene fluoride-co-hexafluoropropylene(PVDF-HFP)crystalline polymorph layer(PHL).The electronegatively charged polymer chains attain lithium ions on the surface to form lithium-ion charged *** channels act as reservoirs to sustainably release Li ions to recompense the ionic flux of electrolytes,decreasing the growth of lithium *** stretched molecular channels can also accelerate the transport of Li *** combined effects enable a high Coulombic efficiency of 97.0%for 250 cycles in lithium(Li)||copper(Cu)cell and a stable symmetric plating/stripping behavior over 2000 h at 3 mA cm^(-2)with ultrahigh Li utilization of 50%.Furthermore,the full cell coupled with PHL-Cu@Li anode and Li Fe PO_(4) cathode exhibits long-term cycle stability with high-capacity retention of 95.9%after 900 ***,the full cell paired with LiNi_(0.87)Co_(0.1)Mn_(0.03)O_(2)maintains a discharge capacity of 170.0 mAh g^(-1)with a capacity retention of 84.3%after 100 cycles even under harsh condition of ultralow N/P ratio of *** facile strategy will widen the potential application of LiNO_(3)in ester-based electrolyte for practical high-voltage LMBs.

关键词： Polymer ionic channel Li metal batteries Artificial protective layer Uniform Li deposition Electrochemical performances

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Association between abnormal default mode network homogeneity and sleep disturbances in major depressive disorder

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General Psychiatry 2024年第2期37卷 234-241页

作者： Muzhi huang yangpan ou Huabing Li Feng Liu Ping Li Jingping Zhao Bing Lang Wenbin Guo Department of Psychiatry The Second Xiangya Hospital of Central South University National Clinical Research Center for Mental Disordersand National Center for Mental DisordersChangshaHunanChina Department of Radiology The Second Xiangya Hospital of Central South UniversityChangshaHunanChina Department of Radiology Tianjin Medical University General HospitalHepingTianjinChina Qiqihar Medical University QiqihaerHeilongjiangChina

Background sleep disturbance is a common comorbidity of major depressive disorder(MDD).However,network homogeneity(NH)changes of the default mode network(DMN)in MDD with sleep disturbances are *** The purpose of this study was to probe the abnormal NH in the DMN in MDD with sleep disturbances and to reveal the differences between MDD with or without sleep *** Twenty-four patients with MDD and sleep disturbances(Pa_s),33 patients with MDD without sleep disturbances(Pa_ns)and 32 healthy controls(HCs)were recruited in this ***-state functional imaging data were analysed using *** Compared with Pa_ns and HCs,Pa_s showed decreased NH in the left superior medial prefrontal cortex and increased NH in the right *** was a negative correlation between NH in the left superior medial prefrontal cortex and sleep disturbances(r=−0.42,p=0.001)as well as a positive correlation between NH in the right precuneus and sleep disturbances(r=0.41,p=0.002)in patients with *** MDD with sleep disturbances is associated with abnormal NH in the DMN,which could differentiate pa_s from pa_*** DMN may play a crucial role in the neurobiological mechanisms of MDD with sleep disturbances.

关键词： sleep medial cortex

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Low-loss and polarization insensitive 32×4 optical switch for ROADM applications

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Light(science & Applications) 2024年第5期13卷 875-884页

作者： Xiaotian Zhu Xiang Wang Yanlu huang Liyan Wu Chunfei Zhao Mingzhu Xiao Luyi Wang Roy Davidson Yanni ou Brent E.Little sai T.Chu Department of Physics City University of Hong KongTat Chee AvenueHong KongChina. QXP Technologies Inc. NO.15th Shanglinyuan 1st RoadXi’anShaanxi 710119China. state Key Laboratory of Information of Photonics and Optical Communications School of Electronic EngineeringBeijing University of Posts and TelecommunicationsBeijing 100876China

Integrated switches play a crucial role in the development of reconfigurable optical add-drop multiplexers(ROADMs)that have greater flexibility and compactness,ultimately leading to robust single-chip *** decades of research on switches with various structures and platforms,achieving a balance between dense integration,low insertion loss(IL),and polarization-dependent loss(PDL)remains a significant *** this paper,we propose and demonstrate a 32×4 optical switch using high-index doped silica glass(HDsG)for ROADM *** switch is designed to route any of the 32 inputs to the express ports or drop any channels from 32 inputs to the target 4 drop ports or add any of the 4 ports to any of the 32 express *** switch comprises 188 MachZehnder Interferometer(MZI)type switch elements,88 optical vias for the 44 optical bridges,and 618 waveguidewaveguide crossings with three-dimensional(3D)*** 1550 nm,the fiber-to-fiber loss for each express channel is below 2 dB,and across the C and L bands,below 3 *** each input channel to all 4 drop/add channels at 1550 nm,the loss is less than 3.5 dB and less than 5 dB across the C and L *** PDLs for all express and input channels to the 4 drop/add channels are below 0.3 dB over the C band,and the crosstalk is under−50 dB for both the C and L bands.

关键词： polarization ROADM optical

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玉米皮阿魏酰低聚糖调节小鼠肠道菌群及缓解结肠炎的研究

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食品与生物技术学报 2024年第5期43卷 146-155页

作者：杨柳欧仕益黄俊卿宋媛暨南大学食品科学教育部重点实验室广东广州510600

采用葡聚糖硫酸钠(Dss)诱导小鼠产生结肠炎症,结合组织切片和16s rRNA基因测序技术,探讨了玉米皮阿魏酰低聚糖(FOs)对结肠炎的缓解及对肠道菌群失衡的调节作用。结果表明,与对照组相比,FOs可以改善小鼠结肠的组织学损伤,上调肠道紧密连... 详细信息

采用葡聚糖硫酸钠(Dss)诱导小鼠产生结肠炎症,结合组织切片和16s rRNA基因测序技术,探讨了玉米皮阿魏酰低聚糖(FOs)对结肠炎的缓解及对肠道菌群失衡的调节作用。结果表明,与对照组相比,FOs可以改善小鼠结肠的组织学损伤,上调肠道紧密连接蛋白表达,下调相关促炎因子表达,表现出对肠道屏障的保护作用。此外,FOs改善了结肠炎引起的小鼠肠道菌群失衡,降低了厚壁菌门和拟杆菌门的相对丰度比值,增加了乳酸杆菌属和毛茛杆菌属等益生菌的相对丰度,并抑制葡萄球菌等致病菌在肠道的定植。与对照组相比,FOs显著增加了结肠短链脂肪酸的质量分数,对结肠微生态也有积极影响。该研究结果表明,FOs可以调节Dss诱导的肠道菌群紊乱、优化肠道菌群结构、提高肠道菌群的多样性,有效改善结肠炎症。

关键词：阿魏酰低聚糖结肠炎肠道菌群短链脂肪酸葡聚糖硫酸钠

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salinity fronts shape spatial patterns in zooplankton distribution in Hangzhou Bay

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Acta Oceanologica sinica 2024年第6期43卷 96-106页

作者： Yepeng Xu Yiqi Wang Lin Zhan Yijun ou Kangning Jia Ming Mao Xuyu Zhu Zhibing Jiang Yuanli Zhu Wei huang Ping Du Jiangning Zeng Lu shou Feng Zhou Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Key Laboratory of Nearshore Engineering Environment and Ecological security of Zhejiang Province Hangzhou 310012China state Key Laboratory of satellite Ocean Environment Dynamics Ministry of Natural ResourcesHangzhou 310012China Nantong Marine Environmental Monitoring Center Ministry of Natural ResourcesNantong 226002China Key Laboratory of Ocean space Resource Management Technology Ministry of Natural ResourcesHangzhou 310012China Observation and Research station of Marine Ecosystem in the yangtze River Delta Ministry of Natural ResourcesZhoushan 316021China

Ocean fronts play important roles in nutrient transport and in the shaping ecological *** zones in small bays are typically small in scale,have a complex structure,and they are spatially and temporally variable,but there are limited data on how biological communities respond to this *** Bay,a mediumsized estuary in China,is an ideal place in which to study the response of plankton to small-scale ocean fronts,because three water masses(Qiantang River Diluted Water,Changjiang River Diluted Water,and the East China sea current) converge here and form dynamic salinity fronts throughout the *** investigate zooplankton communities,and temperature,salinity and chlorophyll a(Chl a) in Hangzhou Bay in June(wet perio d) and December(dry period) of 2022 and examine the dominant environmental factors that affect zooplankton community spatial *** then match the spatial distributions of zooplankton communities with those of salinity fronts.s alinity is the most important explanatory variable to affect zooplankton community spatial variability during both wet and dry periods,in that it contributes>60% of the variability in community ***,the spatial distributions of zooplankton match well with salinity *** December,with weaker Qiantang River Diluted Water and a stronger secondary Changjiang River Plume,zooplankton communities occur in moderate salinity(Ms,salinity range 15.6±2.2) and high salinity(Hs,22.4±1.7) regions,and their ecological boundaries closely match the Qiantang River Diluted Water *** June,different zooplankton communities occur in low salinity(Ls,3.9±1.0),Ms(11.7±3.6) and Hs(21.3±1.9) *** the Ls region occurs abnormally in the central bay rather than its apex because of the anomalous influence of rising and falling tides during the sampling perio d,the ecological boundaries still match salinity ***-salinity or brackish-water zooplankter taxa are relatively more abunda

关键词： zooplankton spatial distribution salinity fronts Hangzhou Bay

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面向牵引座焊缝表面质量检测的轻量型深度学习算法

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计算机应用 2024年第3期44卷 983-988页

作者：黄子杰欧阳江德港郭彩玲李柏林西南交通大学唐山研究生院河北唐山063000 成都大学机械工程学院成都610106 河北省智能装备数字化设计及过程仿真重点实验室(唐山学院) 河北唐山063000 西南交通大学机械工程学院成都610031

针对人工和传统自动化算法检测牵引座焊缝表面存在检测精度低、速度低的问题,提出一种轻量型的牵引座焊缝表面质量检测算法YOLOv5s-G2CW。首先,用GhostBottleneckV2模块替换YOLOv5s中的C3模块以降低模型的参数量;其次,在YOLOv5s模型的N... 详细信息

针对人工和传统自动化算法检测牵引座焊缝表面存在检测精度低、速度低的问题,提出一种轻量型的牵引座焊缝表面质量检测算法YOLOv5s-G2CW。首先,用GhostBottleneckV2模块替换YOLOv5s中的C3模块以降低模型的参数量;其次,在YOLOv5s模型的Neck部分引入CBAM(Convolutional Block Attention Module),在通道和空间两个维度上融合焊缝特征;然后将YOLOv5s的定位损失函数改进为Wise-Iou以聚焦普通质量锚框的预测回归;最后移除YOLOv5s模型中用于大物体检测的13×13特征层以进一步降低模型的参数量。实验结果表明,与YOLOv5s模型相比,YOLOv5s-G2CW的模型大小减小了53.9%,帧率提高了8.0%,平均精度均值(mAP)提高了0.8个百分点,能够满足牵引座焊缝表面质量检测的准确性和实时性要求。

关键词：轻量化模型 YOLOv5s 焊缝检测注意力机制 Wise-Iou

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基于自由曲面光学元件的大视场光学成像系统

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光学精密工程 2024年第9期32卷 1261-1272页

作者：熊玉朋陈适宇黄铖路文文彭小强陈善勇赖涛欧洋国防科技大学智能科学学院装备综合保障技术重点实验室湖南长沙410073 超精密加工技术湖南省重点实验室湖南长沙410073 国防科技大学南湖之光实验室湖南长沙410073

面向机载探测系统大视场光学成像的需求,开展了大视场光学成像系统光学设计、自由曲面光学元件超精密加工、形位误差同步检测以及系统集成与成像实验研究。首先,采用视场扩展法进行大视场自由曲面离轴反射光学系统的设计;其次,进行铝合... 详细信息

面向机载探测系统大视场光学成像的需求,开展了大视场光学成像系统光学设计、自由曲面光学元件超精密加工、形位误差同步检测以及系统集成与成像实验研究。首先,采用视场扩展法进行大视场自由曲面离轴反射光学系统的设计;其次,进行铝合金自由曲面反射镜纳米精度加工和高频抑制工艺探索,并实现了基于计算全息元件的自由曲面形位高精度检测;最后,进行了光学系统的装调集成与成像实验。结果表明,系统的视场角为30°×5°,全视场光学传递函数值大于0.7,接近衍射极限,最大像元均方根半径为2.075μm,自由曲面光学元件的面形精度均方根(Root Mean square,RMs)值优于20 nm,位置精度优于1μm,装配集成后能够满足大视场高分辨的场景使用要求,同时具备稳定可靠和快响制造等特点。

关键词：光学超精密加工自由曲面计算全息补偿检测成像系统

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