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High-quality ghost imaging based on undersampled natural-order Hadamard source

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Chinese Physics B 2024年第9期33卷 404-411页

作者： kang Liu Cheng Zhou Jipeng huang Hongwu Qin Xuan Liu Xinwei Li Lijun Song School of Electronic Information Engineering Changchun UniversityChangchun 130022China School of Physics Northeast Normal UniversityChangchun 130024China College of Electronic and Information Engineering Changchun University of Science and TechnologyChangchun 130022China Jilin Engineering Laboratory for Quantum Information Technology Jilin Engineering Normal UniversityChangchun 130052China Changchun Institute of Technology Changchun 130012China

Improving the speed of ghost imaging is one of the main ways to leverage its advantages in sensitivity and imperfect spectral regions for practical *** of the proportional relationship between image resolution and measurement time,when the image pixels are large,the measurement time increases,making it difficult to achieve real-time ***,a high-quality ghost imaging method based on undersampled natural-order Hadamard is *** method uses the characteristics of the Hadamard matrix under undersampling conditions where image information can be fully obtained but overlaps,as well as deep learning to extract aliasing information from the overlapping results to obtain the true original image *** conducted numerical simulations and experimental tests on binary and grayscale objects under undersampling conditions to demonstrate the effectiveness and scalability of this *** method can significantly reduce the number of measurements required to obtain high-quality image information and advance application promotion.

关键词： ghost imaging natural-order Hadamard deep learning

Electrostatic Encapsulation of Cobalt Ions into Crystalline Framework Derived Polymer Aerogel:Ultra-light,Pressure Resistant,Hydrophobic,Photothermal Conversion,Heat Insulation and Infrared Stealth

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Chinese Journal of Polymer Science 2024年第7期42卷 946-957,I0007页

作者： Yi-Fan kang Jin-Lu Tang Ming Song Wei Wang Jia-Cheng Ma Zhan-You Ji Tong Liu Wen-Huan huang China Key Laboratory of Chemical Additives for China National Light Industry College of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi’an710021China College of New Energy Xi’an Shiyou UniversityXi’an710065China Xi’an Key Laboratory of Functional Supramolecular Structure and Materials College of Chemistry and Materials ScienceNorthwest UniversityXi’an710127China

A variety of electromagnetic wave absorption materials(EMWAs)have been reported,but the integration of powder materials and multifunctional devices should be investigated in-depth to adapt to practical ***,carbon-coated cobalt composites were prepared by adsorbing magnetic metal cations into an anionic crystalline framework through an electrostatic encapsulate *** reflection loss(RL_(min))of-40.49 d B and effective absorption bandwidth(EAB)of 5.36 GHz(RL<-10 d B,10.4-15.76 GHz)was achieved with an optimal radar cross section(RCS)reduction of 34.9 dB·m^(2) for the sample *** commercial applications,Co@CN-4 was integrated into sodium carboxymethyl cellulose(CMC)aerogel to create an ultra-lightweight composite aerogel that is compressive resistant and heat-holding while also having photothermal conversion *** hydrophobic modification makes it more widely *** study provides a new strategy for EWAMs to integrate versatility and improve their application prospects.

关键词： Electrostatic incorporation Magnetic nanoparticle Co@CN composites Electromagnetic wave absorbing Metal-organic framework

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杭州萧山钱江世纪城亚运村片区地下空间规划

地下空间与工程学报 2020年第5期16卷 1273-1285页

作者：黄慷同济大学建筑设计研究院(集团)有限公司市政工程设计院上海200092

结合杭州亚运村片区的开发建设,全面介绍了基于RBD功能的CAZ城市片区地下空间总体布局方案。同时,依托上位规划的功能定位及开发条件,重点分析了地下空间规划的关键技术问题并提出针对性解决途径,论述了片区地下空间开发的必要性和紧迫... 详细信息

结合杭州亚运村片区的开发建设,全面介绍了基于RBD功能的CAZ城市片区地下空间总体布局方案。同时,依托上位规划的功能定位及开发条件,重点分析了地下空间规划的关键技术问题并提出针对性解决途径,论述了片区地下空间开发的必要性和紧迫性,归纳了亚运村片区地下空间开发的目标原则及总体思路。在对地下空间的功能、规模进行全面研究的基础上,打造了城市CAZ高品质片区立体化交通集约型地下空间的典范布局。探索了界定地下空间要素的控规编制原则,并对地下空间开发及管理模式提出了建议。本专项规划具有中国新时代城市建设特色,可为地下空间开发类似工程提供参考。

关键词：窄密路网宁静化交通过境隧道地下车库联络道综合管廊地下公共车库

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杭州亚运村综合管廊兼顾人防设计方法研究

地下空间与工程学报 2021年第5期17卷 1337-1350页

作者：黄慷同济大学建筑设计研究院(集团)有限公司上海200092

在我国当前大规模城市基础设施建设进程中,为提高城市生命线工程的防护性能,降低战时破坏带来的不利影响,对于综合管廊兼顾人防设计的需求逐渐提上议事日程。本文首先系统回顾了我国在该领域内的理论研究历程及工程实践现状,对综合管廊... 详细信息

在我国当前大规模城市基础设施建设进程中,为提高城市生命线工程的防护性能,降低战时破坏带来的不利影响,对于综合管廊兼顾人防设计的需求逐渐提上议事日程。本文首先系统回顾了我国在该领域内的理论研究历程及工程实践现状,对综合管廊工程兼顾人防设计的理论要点做了全面分析总结,归纳了全套设计方法;其次以杭州亚运村片区综合管廊防护设计为例,侧重于片区管廊防护单元的总体布局特点,介绍了按浙江省人防标准进行防护设计的方法和思路,详细分析各专业防护设计方法及技术措施;最后基于前述内容,提炼了该领域内关键技术问题,并对技术标准及相关技术措施提出了建议。本文提出的设计思路方法以及工程实例,可供目前国内类似工程规划设计借鉴参考。

关键词：城市综合管廊亚运村人防防护等级防护单元设计方法

Highly efficient room temperature phosphorescent liquid crystalline polymer optical waveguides for advanced optoelectronics

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Science China Chemistry 2024年第10期67卷 3450-3457页

作者： Jie Li Yan Guan Wei Xia Jin-kang Chen Jiang huang Yi Chen Qi Lin Er-Qiang Chen He-Lou Xie Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education and Key Laboratory of Advanced Functional Polymer Materials of CollegesUniversities of Hunan Province and College of ChemistryXiangtan UniversityXiangtan 411105China School of Physics and Optoelectronics Xiangtan UniversityXiangtan 411105China Beijing National Laboratory for Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCollege of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Active organic optical waveguide materials(OOWMs)incorporating room temperature phosphorescence(RTP)hold significant promise for diverse applications in photonic and optoelectronic *** this potential,realizing active RTP optical waveguides with large-sized ordered structures and minimal light loss remains a formidable *** address this issue,we present a groundbreaking thermoplastic active OOWM with low light loss,leveraging room temperature phosphorescent liquid crystalline polymer(LCP).This innovative material can be easily synthesized through the copolymerization of phosphorescent and liquid crystalline *** resulting RTP copolymer exhibits a nematic liquid crystal phase with a phosphorescence lifetime of approximately 0.15 ms and an afterglow duration of around 1 *** the excellent processability of LCP,we successfully produce meter-scale fibers via melt *** RTP LCP fibers,characterized by a high orientation of mesogens along the fiber axis,demonstrate superior light confinement and efficient light conduction compared to unoriented samples,resulting in a low optical loss coefficient of 0.13 dB/***,the thermal responsiveness of the RTP LCP optical waveguide enables its use as a photo *** pioneering work paves the way for the design of new OOWMs tailored for advanced photonics and optoelectronics devices.

关键词： room temperature phosphorescence liquid crystalline polymer active optical waveguide

Residual stress and welding distortion of Al/steel butt joint by arc-assisted laser welding-brazing

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Transactions of Nonferrous Metals Society of China 2019年第4期29卷 692-700页

作者： Chun-ling LI Ding FAN Xiao-quan YU Jian-kang huang State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals Lanzhou University of TechnologyLanzhou 730050China

The *** finite element method(FEM)is used to simulate the thermo-mechanical behavior of Al/steel tungsten inert gas(TIG)arc-assisted laser welding-brazing(A-LWB)butt *** influence of material nonlinearity,geometrical nonlinearity and work hardening on the welding process is studied,and the differences in the welding temperature field,residual stress and welding distortion by A-LWB and by single laser welding-brazing(SLWB)are *** results show that the thermal cycle,residual stress distribution and welding distortion by the numerical simulation are in good agreement with the measured data by experiments,which verifies the effectiveness of *** with the SLWB,A-LWB can make the high-temperature distribution zone of weld in width direction wider,decrease the transverse tensile stress in the weld and reduce the distribution range of longitudinal tensile *** the welding deformation also decreases to some extent.

关键词： arc-assisted laser welding-brazing(A-LWB) Al/steel finite element method(FEM) temperature field residual stress welding distortion

Landscape of Sequence Variations in Homologous Copies of FAD2 and FAD3 in Rapeseed(Brassica napus L.)Germplasm with High/Low Linolenic Acid Trait

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Phyton-International Journal of Experimental Botany 2024年第3期93卷 627-640页

作者： Haoxue Wu Xiaohan Zhang Xiaoyu Chen kang Li Aixia Xu Zhen huang Jungang Dong Chengyu Yu College of Agronomy Northwest A&F UniversityYangling712100China

Genetic manipulation(either restraint or enhancement)of the biosynthesis pathway ofα-linolenic acid(ALA)in seed oil is an important goal in Brassica napus *** is a tetraploid plant whose genome often har-bors four and six homologous copies,respectively,of the two fatty acid desaturases FAD2 and FAD3,which con-trol the last two steps of ALA biosynthesis during seed oil *** this study,we compared their promoters,coding sequences,and expression levels in three high-ALA inbred lines 2006L,R8Q10,and YH25005,a low-ALA line A28,a low-ALA/high-oleic-acid accession SW,and the wildtype *** expression levels of most FAD2 and FAD3 homologs in the three high-ALA accessions were higher than those in ZS11 and much higher than those in A28 and *** three high-ALA accessions shared similar sequences with the pro-moters and CDSs of BnFAD3.C4 and *** A28 and SW,substitution of three amino acid residues in BnFAD2.A5 and BnFAD2.C5,an absence of BnFAD2.C1 locus,and a 549 bp long deletion on the BnFAD3.A3 promoter were *** proﬁle of BnFAD2 mutation in the two low-ALA accessions A28 and SW is different from that reported in previous *** mutations in BnFAD3 in the high-ALA accessions are reported for theﬁrst *** identifying the sites of these mutations,we provide detailed information to aid the design of mole-cular markers for accelerated breeding schemes.

关键词： Brassica napus linolenic acid FAD2 FAD3 promoter coding sequences mutation

Comparison between conventional and deep learning-based surrogate models in predicting convective heat transfer performance of U-bend channels

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能源与人工智能(英文) 2022年第2期8卷 13-29页

作者： Qi Wang Weiwei Zhou Li Yang kang huang School of Mechanical Engineering Shanghai Jiao Tong UniversityShanghai200240China State Key Laboratory of Aerodynamics MianyangSichuan621000China China Aerodynamics Research and Development Center MianyangSichuan621000China

Deep neural networks are efficient methods to achieve real-time visualization of physics *** main concerns that prevented deep learning from being implemented in the field of energy conversion were the risks of overfitting and the lack of ***,it is necessary to evaluate different kinds of surrogate modeling methods and provide guidelines for designers to choose *** this study,three conventional models(Artificial Neural Network,Radial Bias Function,and Kriging),and two deep learning-based models(Convolutional Neural Network and Conditional Generative Adversarial Neural Network)were established to predict the flow and heat transfer performance of a U-bend with variable *** models were detailly compared in terms of the single-point prediction accuracy,response accuracy,sensitivity to sample size,and other characteristics of *** showed that the conventional models had slightly higher single point accuracy and the relative error of pressure loss and heat transfer were within±6.6%and±5.7%respectively,while those of the deep learning-based models were within±8.0%and±6.3%***,the deep learning-based models had higher response accuracy and could reconstruct the distributions of surface pressure and wall heat flux with the pixel-wise absolute error within±2.0 Pa and±45 W/m^(2) *** results indicated that deep learning was a promising surrogate modeling approach due to its acceptable prediction error and ability to reconstruct physical *** effort was expected to serve as a guide for establishing more reliable data-driven surrogate models for energy conversion and heat transfer problems.

关键词： Surrogate modeling Deep learning Convective heat transfer U-bend

Gunsight sutures significantly reduce surgical-site infection after ileostomy reversal compared with linear sutures

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Gastroenterology Report 2021年第4期9卷 357-362,I0002,I0003页

作者： Chuang-Kun Li Wei-Wen Liang Huai-Ming Wang Wen-Tai Guo Xiu-Sen Qin Jie Zhao Wen-Bin Zhou Yang Li Hui Wang Rong-kang huang Department of Colorectal Surgery the Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhouGuangdongP.R.China Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases The Sixth Affiliated Hospital of Sun Yat-sen UniversityGuangzhouGuangdongP.R.China

Background:Surgical-site infection(SSI)was one of the most common post-operative morbidities of ileostomy *** several skin-closure procedures had been developed to reduce the rate of SSI,the optimal procedure remains *** this study,we compared the effect of two surgical techniques for wound closure following ileostomy reversal:gunsight suture(GS)and linear suture(LS).Methods:A total of 233 patients who underwent loop ileostomy at the Sixth Affiliated Hospital of Sun Yat-sen University between January 2015 and December 2017 were enrolled into our *** patients were divided into two groups:the LS group and the GS *** compared the clinical characteristics between the two groups and analyzed the data using IBM SPSS to identify risk factors for ***:Both groups successfully underwent *** rate of SSI was significantly lower in the GS group(n=2,0.02%)than in the LS group(n=16,12.00%,P=0.007).The length of hospital stay after the operation in the GS group was significantly shorter than that in the LS group(8.163.2 vs 10.865.4 days,P<0.001).Multivariate analysis showed that GS was an independent protective risk factor for SSI(odds ratio=0.212,P=0.048).Conclusions:Compared with the LS technique,the GS technique can significantly decrease the rate of SSI and shorten the length of hospital stay after *** GS technique may be recommended for wound closure following ileostomy reversal.

关键词： ileostomy reversal linear suture gunsight suture surgical-site infection