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Journal of Thermal Science 2025年第1期34卷 24-33页

作者： LIN Yongjie zhang Cancan WU Yuting zhang Yi LU Yuanwei Key Laboratory of Heat Transfer and Energy Conversion National User-Side Energy Storage Innovation Research and Development CenterBeijing University of Technology

Numerical simulations of the flow and heat transfer characteristics of four shell-and-tube molten salt electric heaters with different perforation rates was ***-and-tube electric heaters have the same geometry and tube arrangement,and all of them use single segmental baffles,but there exist four different baffle openings（φ）,i.e.,0%,2.52%,4.06%,and 6.31%.The results indicated that the reasonable baffle opening could significantly reduce the shell-side pressure drop,effectively decreasing the shell-side flow dead zone *** can eliminate the local high-temperature phenomenon on the surface of electric heating tubes,but the heat transfer coefficient is slightly *** perforated schemes significantly reduce shell-side pressure drop compared to the baseline solution without open *** particular,the φ=6.31% scheme exhibits the optimal performance among all the schemes,with a maximum reduction of up to 50.50% in shell-side pressure drop relative to the unopened holes *** heat transfer coefficient is the highest for φ=0%,exhibiting a range of5.26% to 5.73%,5.14% to 5.99%,and 7.31% to 8.54% higher than φ=2.52%,4.06%,and 6.31%,respectively,within the calculated *** composite index h/（Δp）1/3was higher for all open-hole solutions than that for the unopened-hole *** best overall performance was for φ=6.31%,which improved the composite index by15.29% to 17.18% over the unopened-hole solution.

关键词： molten salt electric heater perforated baffles heat transfer

A Lightweight Multiscale Feature Fusion Network for Solar Cell Defect Detection

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Computers, Materials & Continua 2025年第1期82卷 521-542页

作者： Xiaoyun Chen Lanyao zhang Xiaoling Chen Yigang Cen Linna zhang Fugui zhang School of Mechanical Engineering Guizhou UniversityGuiyang550025China School of Computer Science and Technology Beijing Jiaotong UniversityBeijing100044China

Solar cell defect detection is crucial for quality inspection in photovoltaic power generation *** the production process,defect samples occur infrequently and exhibit random shapes and sizes,which makes it challenging to collect defective ***,the complex surface background of polysilicon cell wafers complicates the accurate identification and localization of defective *** paper proposes a novel Lightweight Multiscale Feature Fusion network(LMFF)to address these *** network comprises a feature extraction network,a multi-scale feature fusion module(MFF),and a segmentation ***,a feature extraction network is proposed to obtain multi-scale feature outputs,and a multi-scale feature fusion module(MFF)is used to fuse multi-scale feature information *** order to capture finer-grained multi-scale information from the fusion features,we propose a multi-scale attention module(MSA)in the segmentation network to enhance the network’s ability for small target ***,depthwise separable convolutions are introduced to construct depthwise separable residual blocks(DSR)to reduce the model’s parameter ***,to validate the proposed method’s defect segmentation and localization performance,we constructed three solar cell defect detection datasets:SolarCells,SolarCells-S,and *** and SolarCells-S are monocrystalline silicon datasets,and PVEL-S is a polycrystalline silicon *** results show that the IOU of our method on these three datasets can reach 68.5%,51.0%,and 92.7%,respectively,and the F1-Score can reach 81.3%,67.5%,and 96.2%,respectively,which surpasses other commonly usedmethods and verifies the effectiveness of our LMFF network.

关键词： Defect segmentation multi-scale feature fusion multi-scale attention depthwise separable residual block

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糖尿病黄斑水肿的中西医治疗新进展

吉林中医药 2016年第11期36卷 1185-1188页

作者：李佳王兴荣张有花山东中医药大学济南250000 山东中医药大学附属眼科医院(山东施尔明眼科医院) 济南250000

目的评估激光光凝、玻璃体手术、中医治疗和联合治疗等治疗方法对糖尿病黄斑水肿的治疗效果。方法阅读并筛查国内外关于糖尿病黄斑水肿各种治疗方法的文献,比较各实验组患者治疗前、治疗后的视力、黄斑中心厚度与眼底视网膜血管的变化... 详细信息

目的评估激光光凝、玻璃体手术、中医治疗和联合治疗等治疗方法对糖尿病黄斑水肿的治疗效果。方法阅读并筛查国内外关于糖尿病黄斑水肿各种治疗方法的文献,比较各实验组患者治疗前、治疗后的视力、黄斑中心厚度与眼底视网膜血管的变化。结果糖尿病黄斑水肿是引起糖尿病患者视力下降甚至失明的重要原因。抗VEGF药的广泛应用极大的改变了治疗选择,其早期应用和联合激光、中医药应用较各治疗方法的单独应用疗效显著,是未来糖尿病黄斑水肿的热点。结论激光光凝、玻璃体手术、中医治疗和联合治疗等治疗方法对糖尿病黄斑水肿临床效果显著。

关键词：糖尿病黄斑水肿药物治疗激光光凝玻璃体切割术

Bilevel Optimal Scheduling of Island Integrated Energy System Considering Multifactor Pricing

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Energy Engineering 2025年第1期122卷 349-378页

作者： Xin zhang Mingming Yao Daiwen He Jihong zhang Peihong Yang Xiaoming zhang School of Automation and Electrical Engineering Inner Mongolia University of Science and TechnologyBaotou014010China

In this paper,a bilevel optimization model of an integrated energy operator(IEO)–load aggregator(LA)is constructed to address the coordinate optimization challenge of multiple stakeholder island integrated energy system(IIES).The upper level represents the integrated energy operator,and the lower level is the electricity-heatgas load *** to the benefit conflict between the upper and lower levels of the IIES,a dynamic pricing mechanism for coordinating the interests of the upper and lower levels is proposed,combined with factors such as the carbon emissions of the IIES,as well as the lower load interruption *** price of selling energy can be dynamically adjusted to the lower LA in the mechanism,according to the information on carbon emissions and load interruption *** benefits and win-win situations are achieved between the upper and lower ***,CPLEX is used to iteratively solve the bilevel optimization *** optimal solution is selected according to the joint optimal discrimination *** results indicate that the sourceload coordinate operation can reduce the upper and lower operation *** the proposed pricingmechanism,the carbon emissions and load interruption power of IEO-LA are reduced by 9.78%and 70.19%,respectively,and the capture power of the carbon capture equipment is improved by 36.24%.The validity of the proposed model and method is verified.

关键词： Bilevel optimal scheduling load aggregator integrated energy operator carbon emission dynamic pricing mechanism

Propagating subduction initiation of the Caroline Plate at the Mussau Trench

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Science China Earth Sciences 2025年第1期68卷 253-269页

作者： Chun-Feng LI Yongkang DENG Tao WU Dongdong DONG Guoliang zhang Jiazheng zhang Yutao LIU Yaqing LI Fugui TANG Lulu zhang Department of Marine Sciences Zhejiang University Laboratory of Marine Mineral Resources Laoshan Laboratory Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Key Lab of Ocean and Marginal Sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Science & Technology on Integrated Information System Lab Institute of Software Chinese Academy of Sciences

New seismic imaging from the Mussau Trench confirms that, under horizontal compression on an oceanic plate boundary, it is within the young and weak oceanic plate that a trench will develop, and it is the young plate, not so long after its birth, that starts to subduct toward the old plate. The Mesozoic Pacific Plate cannot easily bend, under the joint horizontal compression and vertical gravity pull, even with a pre-existing weak zone in place and with a large age offset across the plate boundary. The bending of the Caroline Plate near the northern end of the Mussau Trench started only after a long-time span of trench migration, and/or after a prolonged transition from initial compression to trench development. Highly contrasting trench deformation and sedimentary accretion between two parallel seismic sections support an evident migration of underthrusting or significant longitudinal heterogeneity along the trench. The swift transition from underthrusting to non-thrusting can be explained by a counter-clockwise rotation of the Caroline Plate. That miniature accretionary wedges develop even before the subduction initiates imply strong compression and uplifting before the underthrusting can kick-start. Rotation of the Caroline Plate have been halted as the Mussau Trench is seismically rather quiet and the Lyra Trough to the east shows relaxational extension.

关键词： Mussau Trench Subduction initiation Seismic reflection Caroline Plate

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Robust signal recovery algorithm for structured perturbation compressive sensing

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Journal of Systems Engineering and Electronics 2016年第2期27卷 319-325页

作者： youhua Wang Jianqiu zhang School of Information Science and Technology Fudan UniversityShanghai 200433China Science and Technology on Analog Integrated Circuit Laboratory Chongqing 400060China

It is understood that the sparse signal recovery with a standard compressive sensing（CS） strategy requires the measurement matrix known as a priori. The measurement matrix is, however, often perturbed in a practical *** order to handle such a case, an optimization problem by exploiting the sparsity characteristics of both the perturbations and signals is formulated. An algorithm named as the sparse perturbation signal recovery algorithm（SPSRA） is then proposed to solve the formulated optimization problem. The analytical results show that our SPSRA can simultaneously recover the signal and perturbation vectors by an alternative iteration way, while the convergence of the SPSRA is also analytically given and guaranteed. Moreover, the support patterns of the sparse signal and structured perturbation shown are the same and can be exploited to improve the estimation accuracy and reduce the computation complexity of the algorithm. The numerical simulation results verify the effectiveness of analytical ones.

关键词： sparse signal recovery compressive sensing(CS) structured matrix perturbation

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概念格理论与方法研究

农业网络信息 2010年第3期 14-18,27页

作者：王凯李绍稳张友华辜丽川安徽农业大学信息与计算机学院安徽合肥230036

概念格作为一种研究概念内涵与外延的有效工具,在规则提取与数据分析方面有着广泛的应用。讨论了概念格的构造、约简与规则提取,以及模糊概念格的相关内容,并对各种建格算法、约简算法加以论述,分析其与粗糙集的关系,最后提出了未来概... 详细信息

概念格作为一种研究概念内涵与外延的有效工具,在规则提取与数据分析方面有着广泛的应用。讨论了概念格的构造、约简与规则提取,以及模糊概念格的相关内容,并对各种建格算法、约简算法加以论述,分析其与粗糙集的关系,最后提出了未来概念格的相关研究方向。

关键词：概念格模糊概念格约简粗糙集规则提取

超声波辅助提取黄秋葵籽油及其脂肪酸组成分析

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中国油脂 2014年第8期39卷 14-17页

作者：唐萍鲜欣言胡怀容张友华李明元西华大学生物工程学院成都610039

采用超声波辅助提取黄秋葵籽油并采用 GC - MS 对其脂肪酸组成进行分析。通过单因素试验考察提取溶剂、原料粒度、料液比、提取温度、提取时间、超声功率对黄秋葵籽油得率的影响。在单因素试验基础上采用正交试验优化得到最佳提取工艺... 详细信息

采用超声波辅助提取黄秋葵籽油并采用 GC - MS 对其脂肪酸组成进行分析。通过单因素试验考察提取溶剂、原料粒度、料液比、提取温度、提取时间、超声功率对黄秋葵籽油得率的影响。在单因素试验基础上采用正交试验优化得到最佳提取工艺条件为：正己烷为提取溶剂，原料粒度40~60目，料液比1：9，提取温度50℃，提取时间75 min，超声功率80 W。在最佳条件下，黄秋葵籽油得率为26．26%。从黄秋葵籽油中鉴定出11种脂肪酸，主要为不饱和脂肪酸，含量最高的为亚油酸，占34．06%。

关键词：黄秋葵籽油超声波提取脂肪酸组成

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水泥稳定碎石混合料干缩性能试验研究

现代交通技术 2009年第1期6卷 15-19页

作者：樊友庆张友华孙雪伟江西省高等级公路管理局江西南昌310005 江苏省交通科学研究院江苏南京211112

采用正交试验法对水泥稳定碎石混合料干缩试验进行设计,对水泥稳定碎石混合干缩性能进行了试验研究,分析了干缩系数变化与因素水平的相关关系,得出混合料干缩系数与混合料含水量、水泥剂量、外掺剂有关,计算得出了水泥稳定碎石干缩系数... 详细信息

采用正交试验法对水泥稳定碎石混合料干缩试验进行设计,对水泥稳定碎石混合干缩性能进行了试验研究,分析了干缩系数变化与因素水平的相关关系,得出混合料干缩系数与混合料含水量、水泥剂量、外掺剂有关,计算得出了水泥稳定碎石干缩系数的影响系数值。

关键词：水泥稳定碎石干缩性能干缩应变正交试验

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涂层材料长时间气动加热实验研究

宇航材料工艺 2007年第4期37卷 70-72页

作者：张友华刘德英杨汝森杨国铭刘燕松航天空气动力技术研究院北京100074

分两个方面介绍了涂层材料低热流长时间气动加热试验情况。先对涂层材料进行试验筛选,再将性能较好的涂层材料制作成大尺度球锥模型,考核其整体热结构性能及粘接工艺。该试验研究利用了湍流导管试验技术,并将传统的用于高热流、短时间... 详细信息

分两个方面介绍了涂层材料低热流长时间气动加热试验情况。先对涂层材料进行试验筛选,再将性能较好的涂层材料制作成大尺度球锥模型,考核其整体热结构性能及粘接工艺。该试验研究利用了湍流导管试验技术,并将传统的用于高热流、短时间运行的亚声速电弧包罩试验技术拓展到低热流、长时间加热领域,成功进行了小尺度平板模型和大尺度球锥模型的长时间气动加热试验,试验时间达600 s,试验过程中流场参数稳定。试验结果表明,筛选出的涂层材料整体热结构性能及粘接工艺较好。

关键词：涂层材料长时间气动加热湍流导管亚声速电弧包罩