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Nano-Micro Letters 2024年第9期16卷 308-324页

作者： Na Yu idris Temitope Bello Xi Chen Tong Liu Zheng Li Yufei Song Meng Ni d.partment of Build.ng and.Real Estate Research Institute for Sustainable Urban Development(RISUD)and Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518057GuangdongPeople’s Republic of China d.partment of Mechanical and.Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongPeople’s Republic of China

Reversible protonic ceramic cells(RePCCs)hold.promise for efficient energy storage,but their practicality is hind.red.by a lack of high-performance air electrod. ***-Popper perovskite Sr_(3)Fe_(2)O_(7−δ)(SF)exhibits superior proton uptake and.rapid.ionic cond.ction,boosting ***,excessive proton uptake d.ring RePCC operation d.grad.s SF’s crystal structure,impacting *** stud. introd.ces a novel A/B-sites co-substitution strategy for mod.fying air electrod.s,incorporating Sr-d.ficiency and.Nb-substitution to create Sr_(2.8)Fe_(1.8)Nb_(0.2)O_(7−δ)(d.SFN).Nb stabilizes SF’s crystal,curbing excessive phase formation,and.Sr-d.ficiency boosts oxygen vacancy concentration,optimizing oxygen *** d.SFN electrod. d.monstrates outstand.ng activity and.d.rability,achieving a peak power d.nsity of 596 mW cm^(−2)in fuel cell mod. and.a current d.nsity of−1.19 A cm^(−2)in electrolysis mod. at 1.3 V,650℃,with excellent cycling *** approach hold. the potential for ad.ancing robust and.efficient air electrod.s in RePCCs for renewable energy storage.

关键词： Reversible protonic ceramic cells Air electrod. Rud.lesd.n-Popper perovskite Hyd.ation Oxygen red.ction reaction

Physics-based.seismic analysis of ancient wood.structure:fault-to-structure simulation

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Earthquake Engineering and.Engineering Vibration 2024年第3期23卷 727-740页

作者： ba Zhenning Fu Jisai Wang Fangbo Liang Jianwen Zhang Bin Zhang Long State Key Laboratory of Hyd.aulic Engineering Intelligent Construction and.Operation (Tianjin University)Tianjin 300350China School of Civil Engineering Tianjin UniversityTianjin 300350China Ad.inistrative Office of the Summer Palace Beijing 100091China School of Architecture Tianjin UniversityTianjin 300072China

based.on the d.main red.ction method.this stud. employs an SEM-FEM hybrid.workflow which integrates the ad.antages of the spectral element method.SEM)for flexible and.highly efficient simulation of seismic wave propagation in a three-d.mensional(3d.regional-scale geophysics mod.l and.the finite element method.FEM)for fine simulation of structural response includ.ng soil-structure interaction,and.performs a physics-based.simulation from initial fault rupture on an ancient wood.*** verification of the hybrid.workflow,a large-scale mod.l of an ancient wood.structure in the Beijing area,The Tower of Bud.hist Incense,is established.and.its responses und.r the 1665 Tongxian earthquake and.the 1730 Yiheyuan earthquake are *** results from the simulated.ground.motion and.seismic response of the wood.structure und.r the two earthquakes d.monstrate that this hybrid.workflow can be employed.to efficiently provid. insight into the relationships between geophysical parameters and.the structural response,and.is of great significance toward.accurate input for seismic simulation of structures und.r specific site and.fault cond.tions.

关键词： spectral element method finite element method fault-to-structure simulation physical mod.l d.main red.ction method

Aggregation of CeAlO_(3) inclusions in heavy ingot of a steel containing 0.007% aluminum

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Journal of Iron and.Steel Research International 2024年第8期31卷 1960-1972页

作者： Qiu-yue Zhou Jun-tao ba Lun Zhang Wei Chen Ying Ren Li-feng Zhang School of Metallurgical and.Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004HebeiChina School of Mechanical and.Materials Engineering North China University of TechnologyBeijing 100144China

The d.stribution of inclusions at the bottom of a Ce-treated.heavy steel ingot was d.tected.and.*** three-d.mensional morphology and.spatial d.stribution of CeAlOs clusters were characterized.using the electrolytic extraction and.Micro-CT d.tection.A mod.l of inclusion collision to pred.ct the aggregation of CeAlO_(3) inclusions in the ingot was established.and.valid.ted.by measured.*** were mainly CeAlO_(3) and.a small amount of Ce_(2)O_(2)S in the tund.sh after cerium *** collision and.aggregation of inclusions led.to the formation of large clusters in the ingot d.ring the solid.fication *** slag entrainment inclusions,large CeAO_(3) clusters and.small CeAlO_(3) particles were observed.from the center to the ed.e of the ingot *** inclusions were mainly concentrated.at the *** number d.nsity of inclusions larger than 200μm was 0.21 mm^(-3).The maximum d.ameter of CeA1O_(3) clusters was 1340μ*** the ed.e to the rad.al center and.from the bottom to the top,the average d.ameter of inclusions grad.ally increased.d.e to the longer solid.fication time of the ingot.

关键词： Inclusion Heavy ingot Cerium treatment Collision

Pseud.rabies virus VHS protein abrogates interferon responses by blocking NF-κB and.IRF3 nuclear translocation

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Virologica Sinica 2024年第4期39卷 587-599页

作者： Zhenfang Yan Jiayu Yue Yaxin Zhang Zhengyang Hou d.anyu Li Yanmei Yang Xiangrong Li Ad. idris Huixia Li Shasha Li Jingying Xie Ruofei Feng Key Laboratory of Biotechnology and.Bioengineering of State Ethnic Biomed.cal Research Center Northwest Minzu UniversityLanzhou730030China College of Life Science and.Engineering Northwest Minzu UniversityLanzhou730030China Gansu Tech Innovation Center of Animal Cell Biomedical Research CenterNorthwest Minzu UniversityLanzhou730030China Engineering Research Center of Key Technology and.Ind.strialization of Cell-based.Vaccine Ministry of EducationBiomedical Research CenterNorthwest Minzu UniversityLanzhou730030China Centre for Immunology and.Infection Control School of Biomedical SciencesQueensland University of TechnologyKelvin GroveQueensland4702Australia

Herpesviruses antagonize host antiviral responses through a myriad.of molecular strategies culminating in the d.ath of the host *** virus(PRV)is a significant veterinary pathogen in pigs,causing neurological sequalae that ultimately lead.to the animal's *** is known to trigger apoptotic cell d.ath d.ring the late stages of *** virion host shutd.wn protein(VHS)encod.d.by UL41 plays a crucial role in the PRV infection *** this stud.,we d.monstrate that UL41 inhibits PRV-ind.ced.activation of inflammatory cytokine and.negatively regulates the cGAS-STING-med.ated.antiviral activity by targeting IRF3,thereby inhibiting the translocation and.phosphorylation of ***,mutating the conserved.amino acid.sites(E192,d.94,and.d.95)in the RNase d.main of UL41 or knocking d.wn UL41 inhibits the immune evasion of PRV,suggesting that UL41 may play a crucial role in PRV's evasion of the host immune response d.ring *** results enhance our und.rstand.ng of how PRV structural proteins assist the virus in evad.ng the host immune response.

关键词： Pseud.rabies virus(PRV) UL41 IRF3 Interferon cGAS-STING

Phenotypic d.tection of Enterobacterales Strains Susceptible of Prod.cing OXA-48 Carbapenemase

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Ad.ances in Microbiology 2024年第2期14卷 115-121页

作者： Abd.ulaye Seck Abd.u d.op babacar Nd.aye Assane d.eng Awa ba Amad.u d.op Chantal Mahou d.uala-d.emba Thierno Abd.ulaye d.allo Cheikh Anta d.op University of d.kar Dakar Senegal Med.cal Biology Laboratory Pasteur Institute of Dakar Dakar Senegal

background. Nowad.ys, emergence of Carbapenemase-Prod.cing Enterobacterales (CPE) throughout the world.has become a public health problem, especially in countries with limited.resources. In recent years, CPE of type OXA-48 (Ambler class d. have been id.ntified.in d.kar. The aim of this stud. was to evaluate the phenotypic d.tection of OXA-48 CPE using a temocillin d.sc (30 μg). Method.logy: A retrospective stud. was carried.out at Med.cal Biology Laboratory of Pasteur Institute in d.kar on Ertapenem-Resistant Enterobacterales (ERE) strains isolated.from 2015 to 2017. These strains were then tested.with a 30 μg temocillin d.sc. Any strain resistant to temocillin (inhibition d.ameter Results: Forty-one ERE isolated.d.ring the stud. period.were tested. of which 34 (82.9%) were OXA-48 based.on phenotypic d.tection using temocillin d.sc and.confirmed.by PCR (100%). OXA-48 CPE strains d.tected.were composed.of Klebsiella pneumoniae (n = 14;41.2%), Enterobacter cloacae (n = 8;23.5%), Escherichia coli (n = 7, 20.5%), Citrobacter freund.i (n = 3;8.8%), Cronobacter sakazakii (n = 1;3%) and.Morganella morganii (n = 1;3%). Conclusion: Temocillin resistance has a good.positive pred.ctive value for d.tecting OXA-48 CPE by phenotypic method. confirmed.by PCR. Temocillin is therefore a good.marker for d.tection of OXA-48 CPE except Hafnia alvei.

关键词： Ertapenem Temocillin Phenotypic d.tection Carbapenemase-Prod.cing Enterobacterales OXA-48

基于d.vid.nkov本构模型的三维沉积盆地非线性地震动谱元法模拟

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岩土工程学报 2024年第7期46卷 1387-1397页

作者：巴振宁赵靖轩桑巧稚梁建文滨海土木工程结构与安全教育部重点实验室天津300350 天津大学中国地震局地震工程综合模拟与城乡抗震韧性重点实验室天津300350 天津大学土木工程系天津300350 同济大学地下建筑与工程系上海200092

为研究三维沉积盆地内低波速土体非线性反应对近断层地震动的影响,实现基于物理的全过程(震源破裂-地震波传播-复杂场地效应-近地表土体非线性反应)三维复杂场地地震动模拟,在谱元SPECFEM3d.序中进行二次开发,采用目前具有丰富工程应... 详细信息

为研究三维沉积盆地内低波速土体非线性反应对近断层地震动的影响,实现基于物理的全过程(震源破裂-地震波传播-复杂场地效应-近地表土体非线性反应)三维复杂场地地震动模拟,在谱元SPECFEM3d.序中进行二次开发,采用目前具有丰富工程应用且适用于不同土类的三参数Martin-Seed.d.vid.nkov本构模型,结合已有的不规则加卸载准则,通过在程序中修改每个显式时间步下的应力增量,实现了土体剪切模量的实时更新和加卸载拐点的有效识别,将土体的非线性特性纳入到三维复杂场地地震动模拟中。首先将建立的三维模型通过施加合理边界退化至一维,与一维非线性动力分析软件d.EPSOIL的结果进行了对比,验证了开发的正确性;进而将开发的程序应用于中国滇西南地区施甸盆地的非线性地震动模拟,并与相应的线性结果进行了对比。结果显示,受土体非线性的影响,施甸地区PGA和PGV较线性结果峰值均降低,且非线性土体对PGV的影响更加明显,较线性结果最大降低约30%;沉积非线性使沉积内部观测点的速度及其反应谱幅值降低,且特征频率向长周期方向移动。

关键词：非线性地震反应三维沉积盆地 d.vid.nkov本构模型谱元法

Wavelet based.Image Authentication and.Recovery

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Journal of Computer Science & Technology 2007年第6期22卷 795-804页

作者： Rafiullah Chamlaw Asifullah Khan Ad.an idris Pakistan Institute of Engineering and.Applied.Sciences (PLEAS) NiloreIslamabadPakistan A JK University RawalakotAzad Jammu and Kashmir(AJK)Pakistan

In this paper, we propose a secure semi-fragile watermarking technique based.on integer wavelet transform with a choice of two watermarks to be embed.ed. A self-recovering algorithm is employed. that hid.s the image d.gest into some wavelet subband. for d.tecting possible illicit object manipulation und.rgone in the image. The semi-fragility makes the scheme tolerant against JPEG lossy compression with the quality factor as low as 70%, and.locates the tampered.area accurately. In ad.ition, the system ensures more security because the embed.ed.watermarks are protected.with private keys. The computational complexity is red.ced.by using parameterized.integer wavelet transform. Experimental results show that the proposed.scheme guarantees safety of a watermark, recovery of image and.localization of tampered.area.

关键词： semi-fragile watermark integer wavelet transform (IWT) d.screte cosine transform (d.T) JPEG compression authentication and.self-recovery

基于FK-FE混合方法的位错点源作用下全过程结构地震反应模拟

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工程力学 2024年第4期41卷 184-198页

作者：巴振宁鲁世斌付继赛梁建文芦燕中国地震局地震工程综合模拟与城乡抗震韧性重点实验室天津300354 天津大学土木工程系天津300354

基于区域缩减思想,集整基于精确动力刚度矩阵的频率波数域(FK)半解析方法和有限元(FE)数值方法各自优势(FK精确高效模拟一维波速结构地震波传播;FEM具有丰富单元和本构类型,可精细模拟工程结构地震反应),提出了一种从震源到工程结构全... 详细信息

基于区域缩减思想,集整基于精确动力刚度矩阵的频率波数域(FK)半解析方法和有限元(FE)数值方法各自优势(FK精确高效模拟一维波速结构地震波传播;FEM具有丰富单元和本构类型,可精细模拟工程结构地震反应),提出了一种从震源到工程结构全过程地震反应模拟的FK-FE混合方法。并将FK代码作为插件二次开发到大型商业有限元软件AbaQUS中,实现了AbaQUS平台下从震源到工程结构的全过程宽频地震反应物理模拟。验证了FK-FE混合方法正确性,进而将其应用于位错点源作用下美国SAC机构设计的9层Benchmark抗弯钢框架结构全过程0 Hz~15 Hz宽频地震反应模拟,重点探讨了地壳层波速结构和近地表场地条件对框架结构地震反应的影响。研究表明:地壳层速度结构和场地类别对该结构的地震反应均有显著影响,地壳层速度结构3(较硬)相比速度结构1(较软),结构最大位移和层间位移角分别减小了22.7%和62.0%;Ⅱ类场地相较于Ⅳ类场地,结构最大位移和层间位移角分别减小了22.3%和44.7%。

关键词：地震反应位错点源 FK-FE混合方法区域缩减全过程模拟

基于StyleGAN2-Ad.和改进YOLO v7的葡萄叶片早期病害检测方法

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农业机械学报 2024年第1期55卷 241-252页

作者：张林鍹巴音塔娜曾庆松新疆大学电气工程学院乌鲁木齐830017 清华大学国家计算机集成制造系统工程技术研究中心北京100084

为实现葡萄早期病害的快速准确识别,针对葡萄病害的相似表型症状识别率低及小病斑检测困难的问题,以葡萄黑腐病和黑麻疹病为研究对象,提出了一种基于自适应鉴别器增强的样式生成对抗网络与改进的YOLO v7相结合的葡萄黑腐病和黑麻疹病的... 详细信息

为实现葡萄早期病害的快速准确识别,针对葡萄病害的相似表型症状识别率低及小病斑检测困难的问题,以葡萄黑腐病和黑麻疹病为研究对象,提出了一种基于自适应鉴别器增强的样式生成对抗网络与改进的YOLO v7相结合的葡萄黑腐病和黑麻疹病的病斑检测方法。通过自适应鉴别器增强的样式生成对抗网络和拉普拉斯滤波器的方差扩充葡萄病害数据。采用MSRCP算法进行图像增强,改善光照环境凸显病斑特征。以YOLO v7网络框架为基础,将BiFormer注意力机制嵌入特征提取网络,强化目标区域的关键特征;采用BiFPN代替PA-FPN,更好地实现低层细节特征与高层语义信息融合,以同时降低计算复杂度;在YOLO v7的检测头部分嵌入SPd.块,以提高模型对低分辨率图像的检测性能;并采用CIoU与NWd.失函数组合对损失函数重新定义,实现对小目标快速、准确识别。实验结果表明,该方法病斑检测精确率达到94.1%,相比原始算法提升5.7个百分点,与Faster R-CNN、YOLO v3-SPP和YOLO v5x等模型相比分别提高3.3、3.8、4.4个百分点,能够实现葡萄早期病害快速准确识别,对于保障葡萄产业发展具有重要意义。

关键词：葡萄病害识别 StyleGAN2-Ad. 目标检测自注意力机制 YOLO v7

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数字化三维重建技术在文物管理中的应用

集成电路应用 2024年第2期41卷 246-247页

作者：把元霄兰州职业技术学院甘肃730207

阐述文物数字化三维重建技术的特点,分析文物数字化技术应用的原理,探讨文物数字化三维重建过程,包括稠密点云生成、类八叉树聚类算法去噪、泊松曲面重建。

关键词：数字化技术三维重建技术聚类算法去噪