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Temperate Stutzerimonas Phage Encoding Toxin-Antitoxin System Genes Represents a Novel Genus

Journal of Ocean University of China 2024年第4期23卷 1087-1101页

作者： ZHANG Hong GUO Ruizhe GAO Chen zheng kaiyang XIONG Yao DONG Yue LIU Yundan WANG Ziyue CHEN Ying WANG Hongmin SHAO Hongbing SUNG Yeong Yik MOK Wen Jye WONG Li Lian MCMINN Andrew WANG Min LIANG Yantao College of Marine Life Sciences Institute of Evolution and Marine BiodiversityMOE Laboratory of Evolution and Marine BiodiversityFrontiers Science Center for Deep Ocean Multispheres and Earth SystemCenter for Ocean Carbon NeutralityOcean University of ChinaQingdao 266003China UMT-OUC Joint Center for Marine Studies Qingdao 266003China Institute of Marine Biotechnology Universiti Malaysia Terengganu21030 Kuala TerengganuMalaysia Institute for Marine and Antarctic Studies University of TasmaniaHobartTAS 7001Australia Haide College Ocean University of ChinaQingdao 266100China The Affiliated Hospital of Qingdao University Qingdao 266001China

Stutzerimonas have been extensively studied due to their remarkable metabolic and physiological ***,research on its phages is currently *** this study,we isolated a novel double-stranded DNA(dsDNA)phage,vB_SstM-PG1,from the marine environment that infects Stutzerimonas stutzeri *** dsDNA genome is 37204 bp long with a G/C content of 64.14%and encodes 54 open reading *** phage possesses a tail packaging structure that is different from known Stutzerimonas stutzeri phages and exhibits structural protein characteristics similar to those of temperate *** addition,two genes of toxin-antitoxin system,including YdaS_antitoxin and HEPN_SAV_6107,were found in the vB_SstM-PG1 genome and play important roles in regulating host growth and *** phylogenetic tree and comparative genomic analysis,it has been determined that vB_SstM-PG1 is not closely related to any phages previously identified in the GenBank ***,it has a connection with enigmatic,uncultured ***,the vB_SstM-PG1 virus exhibits an average nucleotide identity of over 70%with six uncultivated viruses identified in the IMG/VR v4 *** significant finding has resulted in the identification of a novel viral genus known as Metabovirus.

关键词： Stutzerimonas vB_SstM-PG1 Metabovirus temperate phage genomic and phylogenetic analysis

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Correction: Genomic diversity and ecological distribution of marine Pseudoalteromonas phages

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Marine Life Science & Technology 2023年第2期5卷 286-288页

作者： kaiyang zheng Yue Dong Yantao Liang Yundan Liu Xinran Zhang Wenjing Zhang Ziyue Wang Hongbing Shao Yeong Yik Sung Wen Jye Mok Li Lian Wong Andrew McMinn Min Wang College of Marine Life Sciences Institute of Evolution and Marine Biodiversityand Frontiers Science Center for Deep Ocean Multispheres and Earth SystemOcean University of ChinaQingdao 266100China UMT-OUC Joint Center for Marine Studies Qingdao 266003China Institute of Marine Biotechnology Universiti Malaysia Terengganu(UMT)21030 Kuala NerusMalaysia Institute for Marine and Antarctic Studies University of TasmaniaHobartAustralia Haide College Ocean University of ChinaQingdao 266100China The Afliated Hospital of Qingdao University Qingdao 266000China

In this article the graphics relating to Figs.2 and 3 captions had been interchanged;the fgure(s)should have appeared as shown *** original article has been *** Access This article is licensed under a Creative Commons... 详细信息

关键词： Open Creative Access License

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蚊香盘式液流通道磁流变阀压降及响应性能研究

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农业机械学报 2019年第10期50卷 401-409页

作者：胡国良郑凯阳华东交通大学载运工具与装备教育部重点实验室

设计了一种蚊香盘式液流通道磁流变阀,其液流通道主要由2个牛顿流体圆管流、1个牛顿流体圆环流、2个非牛顿流体圆盘流和2个非牛顿流体螺旋流共同组成。分析了磁流变阀的工作原理及结构,推导了其压降数学模型。采用有限元法对磁流变阀的... 详细信息

设计了一种蚊香盘式液流通道磁流变阀,其液流通道主要由2个牛顿流体圆管流、1个牛顿流体圆环流、2个非牛顿流体圆盘流和2个非牛顿流体螺旋流共同组成。分析了磁流变阀的工作原理及结构,推导了其压降数学模型。采用有限元法对磁流变阀的电磁场进行建模仿真,并分析了压降变化规律,仿真结果表明,加载电流为2.0 A时,压降达5.58 MPa。搭建了磁流变阀性能测试实验台,对不同外加电流和不同模拟负载下的压降性能进行实验测试,结果表明,当加载电流为2.0 A时,压降可达5.1 MPa,较之传统的径向流磁流变阀压降性能提升明显。不同流量下的响应性能实验结果表明,所设计的磁流变阀响应速度快,上升阶段响应时间小于下降阶段响应时间。

关键词：磁流变阀蚊香盘式液流通道结构设计压降响应时间

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Bentonite Adsorption &Coagulation Treatment of Recycled Fiber Pulping Wastewater

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Engineering（科研） 2013年第10期5卷 314-320页

作者： Tingzhi Liu kaiyang zheng Defa Wang Shuai Li Haoyu Wang School of Material Science& Technology Tianjin University of Science & Technology Tianjin Key Laboratory of Pulp & Paper Tianjin China

A bentonite & PAM particle flocculation system was employed in recycled fiber pulp wastewater treatment in this paper. The optimum conditions of the adsorption & coagulation treatment was explored and optimized and effects of the treatment were focused on, especially stickies substances removal. Under the optimal conditions, the removal of MTBE extract and cationic demand reached 91.26% and 86.93%, and the average particle size in the treated wastewater pollutants is reduced from 40.95μm to 0.5μm. In this treatment the removal of CODcr, turbidity, SS and color were 89.67%, 99.56%, 95.58% and 93.08%, respectively. The results showed that the particle flocculation system was effective for the treatment of recycled fiber pulp wastewater, especially for controlling the stickies.

关键词： Recycled Fiber Pulp Wastewater Stickies Bentonite Coagulation

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面向密集行人检测改进YOLOX-S算法

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信息技术与信息化 2023年第5期 132-135页

作者：郑凯阳伍鹏长江大学电子信息学院湖北荆州434023

对于当前越来越多的行人交通事故,驾驶车辆能够准确、快速地检测到行人是避免事故发生的有效途径之一。针对目前行人检测模型对密集场所行人检测出现漏检、误检等现象,提出了一种基于YOLOX-S改进的行人检测模型。首先用多尺度不对称特... 详细信息

对于当前越来越多的行人交通事故,驾驶车辆能够准确、快速地检测到行人是避免事故发生的有效途径之一。针对目前行人检测模型对密集场所行人检测出现漏检、误检等现象,提出了一种基于YOLOX-S改进的行人检测模型。首先用多尺度不对称特征融合模块替换输出端2个普通卷积层,不仅增加模型复杂度,也可以获得不同的感受野特征。然后使用Focal loss函数替换交叉熵损失函数,可以减少易分类样本的权重,增加了难分类样本的权重,提高模型的准确。在自制行人检测数据集上实验结果表明,改进的YOLOX-S模型的平均精度均值达到90.9%,和YOLOX-S相比提高了2.1%。对检测速度影响很小的前提下,减少行人漏检情况,提高了检测精度。

关键词：行人检测多尺度不对称特征融合 YOLOX-S 损失函数 Focal loss

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Efficient Publication of Distributed and Overlapping Graph Data Under Differential Privacy

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Tsinghua Science and Technology 2022年第2期27卷 235-243页

作者： Xu zheng Lizong Zhang kaiyang Li Xi Zeng the School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China China Electronics Technology Cyber Security Co.Ltd. Chengdu 610000China

Graph data publication has been considered as an important step for data analysis and *** data,which provide knowledge on interactions among entities,can be locally generated and held by distributed data *** data are usually sensitive and private,because they may be related to owners’personal activities and can be hijacked by adversaries to conduct inference *** solutions either consider private graph data as centralized contents or disregard the overlapping of graphs in distributed ***,this work proposes a novel framework for distributed graph *** this framework,differential privacy is applied to justify the safety of the published *** includes four phases,i.e.,graph combination,plan construction sharing,data perturbation,and graph *** published graph selection is guided by one data coordinator,and each graph is perturbed carefully with the Laplace *** problem of graph selection is formulated and proven to be ***,a heuristic algorithm is proposed for *** correctness of the combined graph and the differential privacy on all edges are *** study also discusses a scenario without a data coordinator and proposes some insights into graph publication.

关键词： graph data distributed data publication differential privacy

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Plausible Heterogeneous Graph k-Anonymization for Social Networks

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Tsinghua Science and Technology 2022年第6期27卷 912-924页

作者： kaiyang Li Ling Tian Xu zheng Bei Hui School of Computer Science and Engineering University of Electronic Science and Technology of ChinaChengdu 611731China School of Information and Software Engineering University of Electronic Science and Technology of ChinaChengdu 610054China Trusted Cloud Computing and Big Data Key Laboratory of Sichuan Province Chengdu 610000China

The inefficient utilization of ubiquitous graph data with combinatorial structures necessitates graph embedding methods,aiming at learning a continuous vector space for the graph which is amenable to be adopted in traditional machine learning algorithms in favor of vector *** embedding methods build an important bridge between social network analysis and data analytics as social networks naturally generate an unprecedented volume of graph data *** social network data not only bring benefit for public health,disaster response,commercial promotion,and many other applications,but also give birth to threats that jeopardize each individual’s privacy and ***,most existing works in publishing social graph embedding data only focus on preserving social graph structure with less attention paid to the privacy issues inherited from social *** be specific,attackers can infer the presence of a sensitive relationship between two individuals by training a predictive model with the exposed social network *** this paper,we propose a novel link-privacy preserved graph embedding framework using adversarial learning,which can reduce adversary’s prediction accuracy on sensitive links while persevering sufficient non-sensitive information such as graph topology and node attributes in graph *** experiments are conducted to evaluate the proposed framework using ground truth social network datasets.

关键词： social network graph embedding privacy preservation adversarial learning

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基于改进YOLOv5l的印刷品缺陷检测

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激光与光电子学进展 2024年第10期61卷 220-227页

作者：刘海文郑元林钟崇军廖开阳孙帮勇赵含香林杰王豪强韩善翔解博西安理工大学印刷包装与数字媒体学院陕西西安710054 渭南日报社印刷厂陕西渭南714099

针对印刷生产中传统人工缺陷检测耗时耗力、小缺陷区域不易检测,以及传统图像处理方法鲁棒性差等问题,提出一种基于改进YOLOv5l模型的印刷品缺陷检测算法。首先,通过增加浅层特征图拓展检测尺度,以捕获微小缺陷信息,从而提高网络对小目... 详细信息

针对印刷生产中传统人工缺陷检测耗时耗力、小缺陷区域不易检测,以及传统图像处理方法鲁棒性差等问题,提出一种基于改进YOLOv5l模型的印刷品缺陷检测算法。首先,通过增加浅层特征图拓展检测尺度,以捕获微小缺陷信息,从而提高网络对小目标的检测能力;然后,使用全维度动态卷积替换Neck区中的普通卷积,以增强网络对印刷缺陷上下文信息的捕获能力;最后,为解决前两项工作带来的检测速度下降的问题,采用C3Ghost替换Neck中的C3模块,在检测精度损耗极低的情况下尽可能地提高检测速度。实验结果表明:改进后的YOLOv5l算法的平均精度均值(mAP)达到97.3%,较原YOLOv5l算法和现有的印刷品缺陷检测算法Siamese-YOLOv4的精度分别提高2.9百分点和2.7百分点;检测速度为44.1 frame/s。所提算法对印刷品缺陷的分类和定位效果优于原YOLOv5l和Siamese-YOLOv4算法,具有较高的检测精度和检测速度,可以应用于印刷质检来提高生产质量管控水平、降低人工成本。

关键词：机器视觉缺陷检测 YOLOv5算法多尺度融合动态卷积

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Multi-functional stimuli-responsive biomimetic flower assembled from CLCE and MOF-based pedals

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Chinese Chemical Letters 2023年第1期34卷 517-522页

作者： Dongpeng Sun Lin zheng Xuejing Xu kaiyang Du Zhiqiang An Xuan Zhou Li Chen Jiliang Zhu Dong Chen Department of Applied Physics Hebei University of TechnologyTianjin 300401China College of Energy Engineering and State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China

Simulating the structures and behaviors of living organisms are of great significance to develop novel multi-functional intelligent devices. However, the development of biomimetic devices with complex deformable structures and synergistic properties is still on the way. Herein, we propose a simple and effective approach to create the multi-functional stimuli-responsive biomimetic devices with independently pre-programmable colorful visual patterns, complex geometries and morphable modes. The metal organic framework(MOF)-based composite film acts as a rigidity actuation substrate to support and mechanically guide the spatial configuration of the soft chiral nematic liquid crystal elastomer(CLCE) sheet. We can directly program the structural color of the CLCE sheet by adjusting the thickness distribution without tedious chemical modification. By using this coordination strategy, we fabricate an artificial flower, which exhibits a synergistic effect of both shape transformation and color change like paeonia ‘Coral Sunset’at different flowering stages, and can even perform different flowering behaviors by bending, twisting and curling petals. The assembled bionic flower is innovatively demonstrated to respond to local stimuli of humidity, heat or ultraviolet irradiation. Therefore, the spatial assembly of CLCE combined with functional MOF materials has a wide range of potential application in multi-functional integrated artificial systems.

关键词： 3D assembly Biomimetic structure Synergistic responses Cholesteric liquid crystal elastomer Bragg reflection

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Insight into the structure-capacity relationship in biomass derived carbon for high-performance sodium-ion batteries

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Journal of Energy Chemistry 2021年第11期30卷 497-504,I0011页

作者： Jianguo Sun Yao Sun Jin An Sam Oh Qilin Gu Weidong zheng Minhao Goh kaiyang Zeng Yuan Cheng Li Lu Department of Mechanical Engineering National University of SingaporeSingapore 117575Singapore School of Science Harbin Institute of TechnologyShenzhen 518055GuangdongChina National University of Singapore Chongqing Research Institute Chongqing 401123China Graduate School for Integrative Sciences and Engineering National University of SingaporeSingapore 138632Singapore Singapore Institute of Manufacturing Technology A*STAR(Agency for ScienceTechnologyand Research)Singapore 138634Singapore Department of Materials Science and Engineering National University of SingaporeSingapore 117575Singapore Monash Suzhou Research Institute Suzhou 215123JiangsuChina

Carbonaceous materials are the most promising candidates as the anode for sodium-ion batteries (SIBs), however, they still suffer from low electric conductivity and sluggish sodium ion (Na+) reaction kinetics. Appropriate composition modulation using heteroatoms doping and structure optimization is highly desired. A basic empirical understanding of the structure-capacity relationship is also urgent in tackling the above problems. Herein, multi-functional nitrogen (N) doped carbon micro-rods with enlarged interlayer spacing are synthesized and investigated as the anode in SIBs, showing an ultra-stable capacity of 161.5 mAh g^(−1) at 2 A g^(−1) for over 5000 cycles. Experimental investigations and first-principle calculations indicate that the enlarged interlayer spacing can facilitate Na+ intercalation and N doping can guarantee the high electric conductivity and favorable electrochemical active sites. Additionally, pyridinic N is theoretically proved to be more effective to enhance Na+ adsorption than pyrrolic N due to the lower adsorption energy and stronger binding energy with Na+. Full SIBs show a high capacity and cyclability, making the biomass-derived carbon micro-rods to be a promising anode for practical SIBs applications.

关键词： Biomass Nitrogen doping Hard carbon Sodium-ion batteries

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