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Analyzing the Wind-Dominant Electricity Market under Coexistence of Regulated and Deregulated Power Trading

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Energy Engineering 2024年第8期121卷 2093-2127页

作者： Yirui Li Dongliang Xiao Haoyong chen Weijun Cai Josue Campos do Prado School of Electric Power South China University of TechnologyGuangzhou510641China School of Engineering and Computer Science Washington State University VancouverVancouver98686USA School of Automation Guangdong University of TechnologyGuangzhou510006China

Currently,both regulated and deregulated power trading exist in China’s power system,which has caused imbalanced funds in the electricity *** this paper,a simulation analysis of the electricity market with wind energy resources is conducted,and the calculation methods of unbalanced funds are investigated *** detail,the calculation formulas of unbalanced funds are illustrated based on their definition,and a two-track electricity market clearing model is ***,the concept of the dual-track system is explained,and the specific calculation formulas of various types of unbalanced funds are ***,considering the renewable energy consumption,the market clearing model based on DC power flow is constructed and solved;by combining fitting methods of mid-and long-term curves,the unbalanced funds are calculated based on clearing results and formulas.

关键词： Dual-track system electricity market renewable energy unbalanced funds

基于V形记忆曲线的汽车轮毂造型衍生设计方法

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机械设计 2024年第3期41卷 163-169页

作者：孙利陈永亮艾雯孙倩哲于鸿飞吴俭涛燕山大学机械工程学院河北秦皇岛066004 北方自动控制技术研究所山西太原030006 燕山大学艺术与设计学院河北秦皇岛066004

为提高汽车轮毂造型设计的效率,增强品牌造型识别度,提出一种高效的轮毂造型衍生创新设计方法。通过分析轮毂V形记忆曲线的变化规律和特点,总结出两类V形记忆曲线,并根据控制点数量分别进行了定量化表达;以轮毂造型的5个设计要素为基础... 详细信息

为提高汽车轮毂造型设计的效率,增强品牌造型识别度,提出一种高效的轮毂造型衍生创新设计方法。通过分析轮毂V形记忆曲线的变化规律和特点,总结出两类V形记忆曲线,并根据控制点数量分别进行了定量化表达;以轮毂造型的5个设计要素为基础,提取轮毂骨骼的特征并建立运算法则,构建基于V形记忆曲线的轮毂造型衍生设计方法;通过参数化实现造型构建方案衍生,验证了该方法的可行性。研究结果表明:基于V形记忆曲线的轮毂造型衍生设计方法提高了轮毂设计效率,实现了轮毂造型创新及提升品牌特征延续的设计目标,为同类型产品的创新设计提供参考。

关键词：汽车轮毂造型造型衍生设计 V形记忆曲线轮毂骨骼参数化构建

基于MobileNet-CBAM模型的轻量级鸟类识别方法

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信息技术 2024年第8期48卷 1-7,17页

作者：成迪雷毅张成军陈亚当刘文杰余文斌南京信息工程大学江苏大气环境和装备技术协同创新中心南京210044 南京信息工程大学计算机学院南京210044 南京信息工程大学数字取证教育部工程研究中心南京210044

对于鸟类识别任务,当前一些深度学习网络模型的效果并不理想,针对现有模型的痛点,提出了一种在识别精度、计算性能、资源消耗和实用性上更具优势的轻量级鸟类识别方法。该方法基于轻量级MobileNet模型,融合了卷积注意力机制(Convolution... 详细信息

对于鸟类识别任务,当前一些深度学习网络模型的效果并不理想,针对现有模型的痛点,提出了一种在识别精度、计算性能、资源消耗和实用性上更具优势的轻量级鸟类识别方法。该方法基于轻量级MobileNet模型,融合了卷积注意力机制(Convolutional Block Attention Module,CBAM),在减少模型复杂度的同时增强了局部特征的提取能力,与主流模型的对比实验验证了该模型的有效性。此外,该模型能够应用于机器人、便携式手机等硬件平台,扩展了应用场景,并添加数据库来进行辅助计算,减少额外开销,兼具便携性和实用性。

关键词： MobileNet 注意力机制 Android平台鸟类识别图像识别

Optimization design and experiment of the variable differential gear train planting mechanism

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International Journal of Agricultural and Biological Engineering 2024年第2期17卷 85-93页

作者： Xiong Zhao Ziwei Liu Yuanwu Jia Xingxiao Ma Pengfei Zhang Jianneng chen School of Mechanical Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China Xi’an International University Engineering College Xi’an 710077China Hangzhou Vocational&Technical College Hangzhou 310018China

In order to improve the adaptability of the planting mechanism for different plant spacings,a variable differential gear train planting mechanism based on precise pose and trajectory control was proposed by combining the open chain 2R rod group and the variable differential gear *** to the pose requirements of receiving seedling point,transporting seedling point and planting point,three precise pose points of constrained planting trajectory were *** the three-position motion generation structural synthesis method,combined with computer-aided optimization design software,a set of mechanism parameters that meet the planting requirements were *** on the optimized mechanism parameters,by only changing the coordinates of two trajectory shape control points,three planting trajectories with key point position information adapted to 300 mm,400 mm and 500 mm plant spacing were obtained by interpolation,and three pairs of total transmission ratio of three groups of variable differential gear trains were *** distributing the total transmission ratio of the mechanism,the fixed axis gear train and the differential gear train are *** fixed axis gear train included a pair of non-circular gear pairs and a pair of positive gear pairs,which were convenient for disassembly and *** former drives the sun gear at variable speed,and the latter drives the planet carrier at uniform *** on this structure,the transmission ratio of the positive gear pair is-1,and the transmission ratio of the differential gear train is *** sub-transmission ratio of the single-stage non-circular gear pair was calculated and the pitch curves of three pairs of noncircular gears were *** pairs of non-circular gear pairs with different transmission ratios were replaced in turn and three sets of planting mechanisms were modeled in three *** virtual prototype motion simulation was completed by ADAMS software,and the p

关键词： plant spacing planting mechanism variable differential gear train precise pose trajectory control parameter optimization

反相液相色谱-二极管阵列法测定消毒产品中苯扎氯铵3种同系物的含量

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理化检验（化学分册） 2024年第3期60卷 294-299页

作者：陈松辉钱辉李兴根汶海花朱磊王爱霞泰州市产品质量监督检验院国家精细化学品质量检验检测中心泰州225300

目前标准方法检测苯扎氯铵时仅用了一个平均相对分子质量洁尔灭来表示两种或几种混合物,无法区别苯扎氯铵的几种同系物,为了测定苯扎氯铵同系物的含量,进行了题示研究。取消毒产品1.0000 g,用水稀释并定容至10 mL,超声提取5 min,静置,过... 详细信息

目前标准方法检测苯扎氯铵时仅用了一个平均相对分子质量洁尔灭来表示两种或几种混合物,无法区别苯扎氯铵的几种同系物,为了测定苯扎氯铵同系物的含量,进行了题示研究。取消毒产品1.0000 g,用水稀释并定容至10 mL,超声提取5 min,静置,过0.45μm聚砜醚水相滤膜,滤液中苯扎氯铵3种同系物十二烷基二甲基苄基氯化铵、十四烷基二甲基苄基氯化铵、十六烷基二甲基苄基氯化铵在Agilent XDB-C_(18)色谱柱(250 mm×4.6 mm,5μm)上分离,以体积比70:30的乙腈-含0.1%(体积分数)三乙胺的0.5 g·L^(-1)乙酸铵缓冲溶液(pH 5.0)为流动相进行等度洗脱,采用二极管阵列检测器在262 nm处检测。结果表明,扫尾剂三乙胺的体积分数从1%降低到0.1%,避免了扫尾剂三乙胺对色谱柱的可能损害,解决了出现鬼峰的问题。苯扎氯铵3种同系物的质量浓度在10~500 mg·L^(-1)内与对应的峰面积呈线性关系,检出限(3S/N)分别为1.1,1.2,1.5 mg·L^(-1)。按照标准加入法进行回收试验,回收率为98.8%~105%,测定值的相对标准偏差(n=8)均小于2.0%。方法用于实际消毒产品的分析,检出量为0.027%~44.60%,从微量到常量均有涉及。

关键词：反相液相色谱-二极管阵列法消毒产品苯扎氯铵同系物

Numerical Analysis of the Influence of the Impinging Distance on the Scouring Efficiency of Submerged Jets

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Fluid Dynamics & Materials Processing 2024年第2期20卷 429-445页

作者： Hao chen Xianbin Teng Zhibin Zhang Faxin Zhu Jie Wang Zhaohao Zhang School of Naval Architecture and Maritime Zhejiang Ocean UniversityZhoushan316022China School of Marine Engineering Guangzhou Maritime UniversityGuangzhou510725China

Water jet technology is widely used in submerged buried pipes as a non-traditional trenching process,often invol-ving a complex sediment *** important adjustable and inﬂuential engineering variable in this technol-ogy is represented by the impinging *** this study,the FLOW-3D software was used to simulate the jet scouring of sand beds in a submerged *** particular,four sets of experimental conditions were con-sidered to discern the relationship between the maximum scour depth and mass and the impinging *** shown by the results,a critical impinging distance h0 exists by which the static scour depth can be maximized;the scour mass ratio between dynamic and static conditions decreases as the impinging distance ***,the proﬁle contours are similar when the erosion parameter Ec is in the range 0.35

关键词： Submerged jet impinging distance numerical simulation scour depth scour proﬁle

Crossroads:Pathogenic role and therapeutic targets of neutrophil extracellular traps in rheumatoid arthritis

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BIOCELL 2024年第1期48卷 9-19页

作者： YANG LI JIAN LIU YUEDI HU chenGZHI CONG YIMING chen QIAO ZHOU Department of Rheumatology The First Affiliated Hospital of Anhui University of Chinese MedicineHefei230031China First Clinical Medical School Anhui University of Chinese MedicineHefei230031China Institute of Rheumatology Anhui Academy of Chinese MedicineHefei230031China

Rheumatoid arthritis(RA)is a prevalent autoimmune disease whose main features include chronic synovial inflammation,bone destruction,and joint *** are often considered to be the first responders to inflammation and are a key presence in the inflammatory milieu of *** extracellular traps(NETs),a meshwork of DNA-histone complexes and proteins released by activated neutrophils,are widely involved in the pathophysiology of autoimmune diseases,especially RA,in addition to playing a key role in the neutrophil innate immune *** have been found to be an important source of citrullinated autoantigen antibodies and inflammatory factor release,which can activate RA synovial fibroblasts(FLS)and cause joint *** article reviews the role of NETs in the pathophysiology of RA,demonstrating the application of multiple molecules with various therapies,with a view to informing the discovery and development of novel biomarkers and therapeutic targets for RA.

关键词： Rheumatoid arthritis Neutrophil extracellular traps Review

利用均匀密度等离子体通道加速质子的辐射压力增强方案

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物理学报 2024年第11期73卷 218-230页

作者：杨露王晓南陈鑫陈鹏帆夏倩雯熊力龙昊雨李林洋毛小保周海龙张玮炜兰小飞何阳帆西华师范大学物理与天文学院南充637001 攀枝花第三高级中学校攀枝花617099

提出了辐射压力加速与激光尾波场加速相结合的高能质子加速方案.该方案中在临界密度薄靶后端增加一个均匀密度等离子体通道获得了峰值能量为22.2 GeV、截止能量为36.4 GeV和电荷量为0.67 nC的高能质子束,与质子在纯辐射压力加速中相比,... 详细信息

提出了辐射压力加速与激光尾波场加速相结合的高能质子加速方案.该方案中在临界密度薄靶后端增加一个均匀密度等离子体通道获得了峰值能量为22.2 GeV、截止能量为36.4 GeV和电荷量为0.67 nC的高能质子束,与质子在纯辐射压力加速中相比,其高能质子的截止能量可以提升2个数量级.结果证实了通过在近临界密度薄靶后面连接一个均匀密度等离子体通道,等离子体通道中激光激发的尾波场可以捕获经辐射压力过程预加速的质子并维持长时间的加速,最终获得高能质子,本文还研究了不同均匀密度等离子体通道中质子的加速情况,发现密度越高,则被加速质子的峰值能量和截止能量越高,电荷量也越大.该组合加速方案对高能质子束的产生与应用具有一定的指导意义.

关键词：辐射压力加速激光尾波场加速高能质子束等离子体通道

4-Hydroxy-2-Oxoglutaric Acid,A KeyMetabolite Involved in Trypsin-Regulation of Arginine Metabolism in Hylocereus undatus during Storage

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 885-900页

作者： Bairu Li Jingyu Jia Hemin Wang Jiaju Sun Enyan chen Xin Li College of Food and Bioengineering Henan University of Science and TechnologyLuoyang471023China Henan Engineering Research Center of Food Microbiology Luoyang471023China National Demonstration Center for Experimental Food Processing and Safety Education Luoyang471000China

Trypsin,a novel superoxide scavenger,significantly enhances the storage quality of Hylocereus undatus(***).To elucidate the preservation mechanism of trypsin on ***,a widely targeted metabolomic analysis,and transcriptomics analysis were ***,a total of 453 metabolites were identified,with organic acids and their derivatives constituting the largest proportion(25%).Amino acids and their metabolites,prominent among organic acids,were further *** them,73 metabolites were associated with amino acids,and 37 exhibited significant *** most enriched Kyoto Encyclopedia of Genes and Genomes(KEGG)pathway was arginine biosynthesis(map00220),with polyamine metabolites showing the most pronounced differences,particularly spermine(FC=1.7594).Compared with the control group,4-hydroxy-2-oxoglutaric acid was significantly upregulated(FC=2.117)in the process of spermine ***,the results of Gene Ontology(GO)and KEGG enrichment analysis of the *** transcriptome profile revealed that trypsin treatment led to 187 differentially expressed genes associated with *** GO and KEGG analyses exhibited significant enrichment in the spermine biosynthetic process(GO:0006597)(map:00220)within the arginine biosynthesis ***,most enzymes and metabolites within the spermine biosynthesis pathway in *** were *** results of the PPI network highlighted that ADC,SPDS,and SAMDC,among others,were pivotal proteins involved in trypsin-regulated arginine metabolism and spermine *** study revealed that trypsin could significantly delay postharvest senescence of *** at room *** effect might be attributed to trypsin triggering the synthesis of 4-hydroxy-2-oxoglutaric acid in the fruit peel,thereby promoting the biosynthesis of spermine and other polyamines.

关键词： Trypsin arginine transcriptomics widely targeted metabolomics