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Journal of Computer and Communications 2024年第1期12卷 1-10页

作者： Huichao shang penglei Li Xiangqian peng School of Mechanical and Electrical Engineering Zhongyuan University of Technology Zhengzhou China School of Mechanical and Electrical Engineering Hunan University of Science and Technology Xiangtan China

To address the issue of deteriorated PCB image quality in the quality inspection process due to insufficient or uneven lighting, we proposed an image enhancement fusion algorithm based on different color spaces. Firstly, an improved MSRCR method was employed for brightness enhancement of the original image. Next, the color space of the original image was transformed from RGB to HSV, followed by processing the S-channel image using bilateral filtering and contrast stretching algorithms. The V-channel image was subjected to brightness enhancement using adaptive Gamma and CLAHE algorithms. Subsequently, the processed image was transformed back to the RGB color space from HSV. Finally, the images processed by the two algorithms were fused to create a new RGB image, and color restoration was performed on the fused image. Comparative experiments with other methods indicated that the contrast of the image was optimized, texture features were more abundantly preserved, brightness levels were significantly improved, and color distortion was prevented effectively, thus enhancing the quality of low-lit PCB images.

关键词： Low-Lit PCB Images Spatial Transformation Image Enhancement Image Fusion HSV

High-Value-Added Utilization of Turpentine:Screening of Anti-Influenza Virus Agents fromβ-Pinene Derivatives

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Journal of Renewable Materials 2024年第1期12卷 45-56页

作者： Yiwen Li Hongyan Si peng Wang Hai Luo Minggui Shen Xiaoping Rao Zhanqian Song Shibin shang Zongde Wang Shengliang Liao East China Woody Fragrance and Flavor Engineering Research Center of National Forestry and Grassland Administration Camphor Engineering Research Center of National Forestry and Grassland AdministrationCollege of ForestryJiangxi Agricultural UniversityNanchang330045China Institute of Chemical Industry of Forestry Products China Academy of ForestryNational Engineering Laboratory for Biomass Chemical UtilizationKey and Open Laboratory of Forest Chemical EngineeringState Forestry AdministrationKey Laboratory of Biomass Energy and MaterialJiangsu ProvinceNanjing210042China College of Chemical Engineering Huaqiao UniversityXiamen361021China

Turpentine is a renewable and resourceful forest *** deep processing and utilization of turpentine,particularly its primary componentβ-pinene,has garnered widespread *** study aimed to synthesize 40 derivatives ofβ-pinene,including nopinone,3-cyanopyridines of nopinone,myrtanyl acid,myrtanyl acylthioureas,and myrtanyl *** assessed the antiviral activities of theseβ-pinene derivatives against influenza virus A/Puerto Rico/8/34(H1N1)using the 3-(4,5-dimetylthiazol-2-yl)-2,5-diphenyltetrazolium bromide ***β-pinene derivatives were used before and after cellular infection with the influenza virus to evaluate their preventive and therapeutic effects against the H1N1 *** results showed that only compound 10o exhibited a preventive effect against the H1N1 virus with a half-maximal inhibitory concentration(IC50)value of 47.6μmol/*** the compounds,4e,4i,and 4l demonstrated therapeutic effects against cellular infection,with compound 4e displaying the most potent therapeutic effect(IC50=17.5μmol/L),comparable to the positive control *** findings indicated that certainβ-pinene derivatives exhibited in vitro antiviral activity against the H1N1 influenza A virus,warranting further investigation as potential anti-influenza agents.

关键词： Antiviral activity β-pinene derivative 3-cyanopyridine influenza virus

剩余污泥有机质资源回收利用原位驱动晚期垃圾渗滤液深度脱氮——一种具有显著能源优势的创新生物技术

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Engineering 2024年第3期34卷 120-132页

作者： Fangzhai Zhang shang Ren Haoran Liang Zhaozhi Wang Ying Yan Jiahui Wang Yongzhen peng National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Engineering Research Center of BeijingBeijing University of TechnologyBeijing 100124China

The sustainable recovery and utilization of sludge bioenergy within a circular economy context has drawn increasing attention,but there is currently a shortage of reliable *** study presents an innovative biotechnology based on free nitrous acid(FNA)to realize sustainable organics recovery from waste activated sludge(WAS)in-situ,driving efficient nitrogen removal from ammonia rich mature landfill leachate by integrating partial nitrification,fermentation,and denitrification process(PN/DN-F/DN).First,ammonia((1708.5±142.9)mg·L^(-1))in mature landfill leachate is oxidized to nitrite in the aerobic stage of a partial nitrification coupling denitrification(PN/DN)sequencing batch reactor(SBR),with nitrite accumulation ratio of 95.4%±2.5%.Then,intermediate effluent(NO_(2)^(-)-N=(1196.9±184.2)mg·L^(-1))of the PN/DN-SBR,along with concentrated WAS(volatile solids(VSs)=(15119.8±2484.2)mg·L^(-1)),is fed into an anoxic reactor for fermentation coupling denitrification process(F/DN).FNA,the protonated form of nitrite,degrades organics in the WAS to the soluble fraction by the biocidal effect,and the released organics are utilized by denitrifiers to drive *** ultra-fast sludge reduction rate of 4.89 kg·m^(-3)·d^(-1) and nitrogen removal rate of 0.46 kg·m^(-3)·d^(-1) were realized in the ***,F/DN-SBR effluent containing organics is refluxed to PN/DN-SBR for secondary denitrification in the post anoxic *** 175 d operation,an average of 19350.6 mg chemical oxygen demand organics were recovered per operational cycle,with 95.2%nitrogen removal and 53.4%sludge ***/DN-F/DN is of great significance for promoting a paradigm transformation from energy consumption to energy neutral,specifically,the total benefit in equivalent terms of energy was 291.8 kW·h·t^(-1) total solid.

关键词： Waste activated sludge Bioresource recovery Simultaneous treatment of wastewater and sludge Mature landfill leachate Free nitrous acid

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融合潜在纹理和表面一致性的三维掌纹识别

光电子．激光 2024年第5期35卷 536-543页

作者：林森尚鹏沈阳理工大学自动化与电气工程学院辽宁沈阳110159

针对三维(3D)掌纹识别由于噪声干扰和忽略相邻深度信息引起识别率低的问题,提出融合潜在纹理和表面一致性的3D掌纹识别方法。首先,利用能量局部边缘二值码(energy local edge binary code,ELEBC)从能量图中提取潜在的纹理方向信息,消除... 详细信息

针对三维(3D)掌纹识别由于噪声干扰和忽略相邻深度信息引起识别率低的问题,提出融合潜在纹理和表面一致性的3D掌纹识别方法。首先,利用能量局部边缘二值码(energy local edge binary code,ELEBC)从能量图中提取潜在的纹理方向信息,消除噪声。然后,通过平均块模式表面类型(mean block pattern surface type,MBST)获取表面一致性。最后,利用主成分分析(principal component analysis,PCA)进行数据降维,并使用决策级融合,从而获取最终的识别结果。在香港理工大学3D掌纹数据库中进行相关实验,结果表明,正确识别率最高可达到99.71%,相比于其他新颖算法具有优势,并且识别分类时间保持在0.5 s以下。这显示出本文方法不仅具有良好的识别效果,同时能够满足实时性的要求,具有应用价值。

关键词：三维(3D)掌纹能量局部边缘二值码(ELEBC) 平均块模式表面类型(MBST) 主成分分析(PCA)

中国市域科技创新与实体经济融合水平分析及其时空特征

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经济地理 2024年第4期44卷 110-120页

作者：曾鹏尚玲杰广西民族大学民族学与社会学学院广西南宁530006 广西民族大学经济学院广西南宁530006

文章基于熵值法测算了2006—2020年中国284个地级及以上城市科技创新与实体经济融合水平,并对城市科技创新与实体经济融合水平的时空演变、区域差异及来源进行实证分析。研究发现:(1)全国及四大区域科技创新与实体经济融合水平稳步提升... 详细信息

文章基于熵值法测算了2006—2020年中国284个地级及以上城市科技创新与实体经济融合水平,并对城市科技创新与实体经济融合水平的时空演变、区域差异及来源进行实证分析。研究发现:(1)全国及四大区域科技创新与实体经济融合水平稳步提升。(2)全国及四大区域科技创新与实体经济融合空间极化趋势明显,总体呈现“东高—西低”的空间格局。(3)区域间差异是中国科技创新与实体经济融合差异的主要来源。全国总体差异变化不大,东部地区区域内差异最大,东部—西部区域间差异最大。

关键词：科技创新实体经济区域差异胡焕庸线

螺杆机用并轴双转子永磁电机齿槽力矩机理分析与抑制

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电机与控制学报 2024年第7期28卷 101-111页

作者：戈宝军商海洋林鹏哈尔滨理工大学电气与电子工程学院黑龙江哈尔滨150080

针对并轴双转子永磁电机过大的齿槽力矩以及转矩脉动大等电磁问题,采用传统单个槽齿槽转矩理论以及双转子电机边端力矩波动理论进行分析,计算了并轴双转子电机齿槽力矩的特殊组成成分以及其各部分转矩的谐波阶次。分析改变磁极偏心距和... 详细信息

针对并轴双转子永磁电机过大的齿槽力矩以及转矩脉动大等电磁问题,采用传统单个槽齿槽转矩理论以及双转子电机边端力矩波动理论进行分析,计算了并轴双转子电机齿槽力矩的特殊组成成分以及其各部分转矩的谐波阶次。分析改变磁极偏心距和转子斜极对电机齿槽力矩和转矩特性的影响。采用响应面法构建电机的多目标优化模型,通过改变永磁体偏心距和斜极块数来约束电机的优化变量,并采取约束关系以及优化目标求解出最优转子结构参数。构建有限元模型,验证齿槽力矩理论的正确性。对比采用最优转子结构参数下电机的电磁性能与优化前电机的电磁性能,优化后电机的齿槽力矩、转矩脉动等电磁性能进一步提升,验证了采用磁极偏心和转子斜极复合结构的有效性。

关键词：并轴双转子永磁电机齿槽力矩转子斜极响应面

A von-Neumann-like photonic processor and its application in studying quantum signature of chaos

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Light(Science & Applications) 2024年第4期13卷 672-681页

作者： shang Yu Wei Liu Si-Jing Tao Zhi-peng Li Yi-Tao Wang Zhi-peng Zhong Raj BPatel Yu Meng Yuan-Ze Yang Zhao-An Wang Nai-Jie Guo Xiao-Dong Zeng Zhe Chen Liang Xu Ning Zhang Xiao Liu Mu Yang Wen-Hao Zhang Zong-Quan Zhou Jin-Shi Xu Jian-Shun Tang Yong-Jian Han Chuan-Feng Li Guang-Can Guo CAS Key Laboratory of Quantum Information University of Science and Technology of ChinaHefei 230026China. CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of ChinaHefei 230026China. Hefei National Laboratory University of Science and Technology of ChinaHefei 230088China. Research Center for Quantum Sensing Zhejiang LabHangzhou 310000China. Quantum Optics and Laser Science Blackett LaboratoryImperial College LondonPrince Consort RdLondon SW72AZUK. Clarendon Laboratory Department of PhysicsOxford UniversityParks Road OX13PUOxfordUK

Photonic quantum computation plays an important role and offers unique *** decades after the milestone work of Knill-Laflamme-Milburn,various architectures of photonic processors have been proposed,and quantum advantage over classical computers has also been *** is now the opportune time to apply this technology to real-world ***,at current technology level,this aim is restricted by either programmability in bulk optics or loss in integrated optics for the existing architectures of processors,for which the resource cost is also a *** we present a von-Neumann-like architecture based on temporal-mode encoding and looped structure on table,which is capable of multimode-universal programmability,resource-efficiency,phasestability and *** order to illustrate these merits,we execute two different programs with varying resource requirements on the same processor,to investigate quantum signature of chaos from two aspects:the signature behaviors exhibited in phase space(13 modes),and the Fermi golden rule which has not been experimentally studied in quantitative way before(26 modes).The maximal program contains an optical interferometer network with 1694 freely-adjustable *** current state-of-the-art,our architecture stands as the most promising candidate for real-world applications.

关键词： quantum signature chaos

Smart Breeding Platform:A web-based tool for high-throughput population genetics,phenomics,and genomic selection

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Molecular Plant 2024年第5期17卷 677-681页

作者： Huihui Li Xin Li peng Zhang Yingwei Feng Junri Mi shang Gao Lele Sheng Mohsin Ali Zikun Yang Liang Li Wei Fang Wensheng Wang Qian Qian Fei Gu Wenbin Zhou State Key Laboratory of Crop Gene Resources and Breeding Institute of Crop SciencesChinese Academy of Agricultural Sciences(CAAS)Beijing 100081China Nanfan Research Institute CAASSanyaHainan 572024China DAMO Academy Alibaba GroupHangzhou 310023China Hupan Lab Hangzhou 310023China Yazhouwan National Laboratory No.8 Huanjin RoadYazhou DistrictSanya CityHainan Province 572024China State Key Laboratory of Rice Biology China National Rice Research InstituteHangzhouZhejiang 310006China

Dear Editor,In the era of big data and artificial intelligence,"smart breeding"has become a broad conceptual framework encompassing the paradigm shift of crop breeding to relying on analysis of high-throughput population genetics and phenomics data to conduct genomic selection,allowing identification and optimal use of the genetic potential in crop species(Xiao et al.,2022;Xu et al.,2022;Wang et al.,2023).Most existing tools for analyzing high-throughput breeding data require extensive computational power,complex installation processes,and command-line expertise and are therefore challenging and inconvenient for the majority of researchers and breeders(Brandies and Hogg,2021).

关键词： breeding artificial breed

Probing quantum causality with geometric asymmetry in spatial-temporal correlations

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Science China(Information Sciences) 2024年第9期67卷 294-305页

作者： Yu MENG Zheng-Hao LIU Zhikuan ZHAO peng YIN Yi-Tao WANG Wei LIU Zhi-peng LI Yuan-Ze YANG Zhao-An WANG Jin-Shi XU shang YU Jian-Shun TANG Chuan-Feng LI Guang-Can GUO CAS Key Laboratory of Quantum Information University of Science and Technology of China CAS Center for Excellence in Quantum Information and Quantum Physics University of Science and Technology of China Department of Computer Science Eidgen?ssische Technische Hochschule Zürich Hefei National Laboratory Department of Physics Imperial College London Research Center for Quantum Sensing Zhejiang Lab

Causation promotes the understanding of correlation to an advanced stage by elucidating its underlying mechanism. Although statisticians have specified the possible causal relations among correlations,inferring causal structures is impossible from only the observed correlations in the classical world. Quantum correlations encapsulating the most defining aspects of quantum physics have taken a new turn for the causal inference problem — the two-point spatial and temporal quantum correlations with observationally discernible characteristics correspond exactly to the two most basic causal structures. However, a direct causal interpretation for quantum correlations has only been established in very limited cases. Here, we explore to what extent quantum correlations promote causal inference. Theoretically, we have found that the distinguishable causal regime of two-point Pauli correlations can be expanded from a single value to an asymmetric interval, and the causal structures determining the quantum correlations can be interpreted by a simple distance criterion. Experimentally, we have devised and implemented a versatile non-unital quantum channel in an optical architecture to directly observe such an asymmetric interval. The setup enabled quantum causal inference without any requirement of active intervention, which is impossible in the classical realm. Our work facilitates the identification of causal links among quantum variables and provides insight into characterizing causation and spatial-temporal correlation in quantum mechanics.

关键词： causality quantum information quantum channel channel-state duality non-unital channel

Chinese herbal medicine Ginkgo biloba *** for ischemic stroke:An overview of systematic reviews and meta-analyses

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Journal of Integrative Medicine 2024年第2期22卷 163-179页

作者： Tian-tian Meng Ya-ping You Min Li Jian-bo Guo Xin-bin Song Jing-yi Ding Xiao-long Xie An-qi Li shang-jin Li Xiang-jun Yin peng Wang Zhe Wang Bao-liang Wang Qing-yong He Department of Cardiology Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing 100032China Department of Rehabilitation Dongfang HospitalBeijing University of Chinese MedicineBeijing 100071China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China School of Chinese Medicine the University of Hong KongHong KongChina Graduate School Henan University of Chinese MedicineZhengzhou 450008Henan ProvinceChina Department of Acupuncture and Moxibustion Dongzhimen HospitalBeijing University of Chinese MedicineBeijing 100010China Department of Cardiology Guang’anmen HospitalChina Academy of Chinese Medical SciencesZhengzhou 450008Henan ProvinceChina School of Integrated Traditional Chinese and Western Medicine Southwest Medical UniversityHangzhou 310053Zhejiang ProvinceChina School of Basic Medical Sciences Zhejiang Chinese Medical UniversityHangzhu 310053Zhejang ProvinceChina Department of Neurology the First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou 450003Henan ProvinceChina

Background:Ginkgo biloba ***(GBLPs)are a class of Chinese herbal medicine used in the adjuvant treatment of ischemic stroke(IS).Recently,several systematic reviews(SRs)and meta-analyses(MAs)of GBLPs for IS have been ***:This overview aims to assess the quality of related SRs and *** strategy:Pub Med,Embase,Cochrane Library,Web of Science,Chinese Biological Medicine,China National Knowledge Infrastructure,Wanfang,and Chinese Science and Technology Journals databases were searched from their inception to December 31,*** criteria:SRs and MAs of randomized controlled trials(RCTs)that explored the efficacy of GBLPs for patients with IS were *** extraction and analysis:Two independent reviewers extracted data and assessed the methodological quality,risk of bias(ROB),reporting quality,and credibility of evidence of the included SRs and MAs using A Measurement Tool to Assess Systematic Reviews 2(AMSTAR 2),Risk of Bias in Systematic Reviews(ROBIS),the Preferred Reporting Items for Systematic Reviews and Meta-analyses(PRISMA),and the Grading of Recommendations Assessment,Development and Evaluation(GRADE),***,descriptive analysis and data synthesis were ***:Twenty-nine SRs/MAs involving 119 outcomes were included in this *** overall methodological quality of all SRs/MAs was critically low based on AMSTAR 2,and 28 had a high ROB based on the *** to the PRISMA statement,the reporting items of the included SRs/MAs are relatively *** results based on GRADE showed that of the 119 outcomes,8 were rated as moderate quality,24 as low quality,and 87 as very low *** on the data synthesis,GBLPs used in conjunction with conventional treatment were superior to conventional treatment alone for decreasing neurological function ***:GBLPs can be considered a beneficial supplemental therapy for ***,because of the low quality of the existing eviden

关键词： statement synthesis alone