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Genetic algorithm assisted meta-atom design for high-performance metasurface optics

Opto-Electronic Science 2024年第9期3卷 15-28页

作者： Zhenjie Yu Moxin Li Zhenyu Xing Hao Gao Zeyang Liu Shiliang Pu Hui mao Hong Cai qiang ma Wenqi Ren Jiang Zhu Cheng Zhang School of Optical and Electronic Information&Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Hikvision Research Institute Hangzhou 310051China

Metasurfaces,composed of planar arrays of intricately designed meta-atom structures,possess remarkable capabilities in controlling electromagnetic waves in various ways.A critical aspect of metasurface design involves selecting suitable meta-atoms to achieve target functionalities such as phase retardation,amplitude modulation,and polarization *** design processes often involve extensive parameter sweeping,a laborious and computationally intensive task heavily reliant on designer expertise and ***,we present an efficient genetic algorithm assisted meta-atom optimization method for high-performance metasurface optics,which is compatible to both single-and multiobjective device design *** first employ the method for a single-objective design task and implement a high-efficiency Pancharatnam-Berry phase based metalens with an average focusing efficiency exceeding 80%in the visible *** then employ the method for a dual-objective metasurface design task and construct an efficient spin-multiplexed structural beam *** device is capable of generating zeroth-order and first-order Bessel beams respectively under right-handed and left-handed circular polarized illumination,with associated generation efficiencies surpassing 88%.Finally,we implement a wavelength and spin co-multiplexed four-channel metahologram capable of projecting two spin-multiplexed holographic images under each operational wavelength,with efficiencies over 50%.Our work offers a streamlined and easy-to-implement approach to meta-atom design and optimization,empowering designers to create diverse high-performance and multifunctional metasurface optics.

关键词： metasurface metalens Bessel beam metahologram genetic algorithm

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典型废弃锑冶炼厂土壤重金属污染特征、风险评价及来源解析

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环境科学 2024年第10期45卷 6171-6184页

作者：张森曹莹高存富孟甜李强中国环境科学研究院环境检测与实验中心北京100012 华北理工大学建筑工程学院唐山063210

以贵州省晴隆县大厂镇某典型废弃锑冶炼厂区域表层土壤(0~20cm)为例,系统采集了冶炼厂区域内外共14个点位的土壤样品,分析了土壤中Sb、As、Cd、Cr、Pb、Cu、Zn、Ni和V等重金属污染状况、分布特征及潜在生态风险,并对污染来源进行评价与... 详细信息

以贵州省晴隆县大厂镇某典型废弃锑冶炼厂区域表层土壤(0~20cm)为例,系统采集了冶炼厂区域内外共14个点位的土壤样品,分析了土壤中Sb、As、Cd、Cr、Pb、Cu、Zn、Ni和V等重金属污染状况、分布特征及潜在生态风险,并对污染来源进行评价与分析.结果表明,该废弃锑冶炼厂表层土壤重金属ω(Sb)、ω(As)、ω(Cd)、ω(Cr)、ω(Pb)、ω(Cu)、ω(Zn)、ω(Ni)和ω(V)的平均值为4.58~15049.33 mg·kg^(-1),除Cr和Ni外,均超过贵州土壤背景值;Sb和As的单因子污染指数为83.61和7.01,属于重度污染,Pb为无污染-轻微污染;土壤重金属综合潜在生态风险表现为,Sb、As和Cd属于严重潜在生态风险水平,其余重金属处于较重或中度潜在生态风险水平;地累积污染指数评价结果表明研究区土壤主要受Sb和As污染,主要呈现偏重度到严重污染等级;RAC法评价结果表明,Sb是该废弃冶炼厂主要防治对象;两种主要污染物Sb和As的浸出毒性、酸溶态、有效态、胃相和肠相生物可利用态含量较高,具有一定的潜在危险性;相关性分析显示,重金属总量与浸出毒性、有效态、酸溶态、可还原态、可氧化态、胃相提取态和肠相提取态存在一定相关性;APCS-MLR模型表明,Sb、As、Zn、Cu和Cd的来源主要为工业源,Cr和V的来源主要为自然源,Pb的来源主要为混合源.

关键词：锑冶炼厂重金属污染特征来源解析绝对主成分-多元线性回归(APCS-MLR)

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Identification and distribution of 13003 landslides in the northwest margin of Qinghai-Tibet Plateau based on human-computer interaction remote sensing interpretation

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China Geology 2024年第2期7卷 171-187页

作者： Wei Wang Yuan-dong Huang Chong Xu Xiao-yi Shao Lei Li Li-ye Feng Hui-ran Gao Yu-long Cui Shuai Wu Zhi-qiang Yang Kai ma National Institute of Natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China Key Laboratory of Compound and Chained Natural Hazards Dynamics Ministry of Emergency Management of Chin12eijing 100085China School of Emergency management Science and Engineering University of Chinese Academy of SciencesBeijing 100049China School of Soil and Water Conservation Beijing Forestry UniversityBeijing 100083China School of Civil Engineering and Architecture Anhui University of Science and TechnologyHuainan 232001China No.3 Bureau of China Metallurgical Geology Bureau Taiyuan 030031China

The periphery of the Qinghai-Tibet Plateau is renowned for its susceptibility to ***,the northwestern margin of this region,characterised by limited human activities and challenging transportation,remains insufficiently explored concerning landslide occurrence and *** the planning and construction of the Xinjiang-Tibet Railway,a comprehensive investigation into disastrous landslides in this area is essential for effective disaster preparedness and mitigation *** using the human-computer interaction interpretation approach,the authors established a landslide database encompassing 13003 landslides,collectively spanning an area of 3351.24 km^(2)(36°N-40°N,73°E-78°E).The database incorporates diverse topographical and environmental parameters,including regional elevation,slope angle,slope aspect,distance to faults,distance to roads,distance to rivers,annual precipitation,and *** statistical characteristics of number and area of landslides,landslide number density(LND),and landslide area percentage(LAP)are *** authors found that a predominant concentration of landslide origins within high slope angle regions,with the highest incidence observed in intervals characterised by average slopes of 20°to 30°,maximum slope angle above 80°,along with orientations towards the north(N),northeast(NE),and southwest(SW).Additionally,elevations above 4.5 km,distance to rivers below 1 km,rainfall between 20-30 mm and 30-40 mm emerge as particularly susceptible to landslide *** study area’s geological composition primarily comprises Mesozoic and Upper Paleozoic *** fault and human engineering activities have different degrees of influence on landslide ***,the significance of the landslide database,the relationship between landslide distribution and environmental factors,and the geometric and morphological characteristics of landslides are *** landslide H/L ratios in the study area are

关键词： Landslides Human-computer interaction interpretation Landslide database Spatial distribution Earthquake Rainfall Human engineering activity Qinghai-Tibet Plateau Geological hazards survey engineering

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航空网络结构鲁棒性分析

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华中科技大学学报（自然科学版） 2024年第1期52卷 106-111页

作者：赖强马鑫张宏昊池明华东交通大学电气与自动化工程学院江西南昌330013 华中科技大学人工智能与自动化学院湖北武汉430074

针对航空网络中大量的三元组结构,提出三元组相对量测度用以衡量航空网络结构鲁棒性.基于相对熵理论,提出更一般的网络结构变化测度指标,即度分布相对熵和集聚系数分布相对熵,来评价航空网络特征分布的变化.运用复杂网络理论构建国内航... 详细信息

针对航空网络中大量的三元组结构,提出三元组相对量测度用以衡量航空网络结构鲁棒性.基于相对熵理论,提出更一般的网络结构变化测度指标,即度分布相对熵和集聚系数分布相对熵,来评价航空网络特征分布的变化.运用复杂网络理论构建国内航空网络模型,采用多种攻击策略对国内航空网络的结构鲁棒性进行仿真实验.结果表明:国内航空网络在各测度与攻击方式中表现出不同的结构鲁棒性,三元组相对量不仅反映了网络结构,而且呈现了网络功能变化;最小三元组边在维持网络运输功能上也表现出重要意义.

关键词：航空网络相对熵三元组测度指标结构鲁棒性

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The homogenous growth of Co-based coordination compound on graphene nanosheet for high-performance K-organic battery and its reaction mechanism

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Rare Metals 2024年第4期43卷 1622-1634页

作者： Qian-Qian Peng Yi-Ting Wang Shuo Qi Yao Xiao Yong Wang Shuang-qiang Chen School of Environmental and Chemical Engineering Shanghai UniversityShanghai200444China School of Chemistry and materials Engineering Wenzhou UniversityWenzhou325035China

Metal coordination compounds(MCCs)are gaining popularity for potassium-ion batteries(PIBs)owing to their tuneable structure,multiple reaction sites,low cost and unique ***,they are generally subjected to intrinsic features of the sluggish ionic diffusion coefficient,low electronic conductivity and slow ***,a new MCC material of cobalt-1,3,5-trioxy-2,4,6-triamino-benzo(Co-TB)coordination compound was synthesized and homogenously grown on the surface of graphene nanosheets(GNS),forming a Co-TB@GNS composite with enhanced electronic conductivity and flexible *** from the overall enhanced conductivity,high surface area and abundant activated K-storage sites,Co-TB@GNS electrodes have exhibited superior cycling performance with high reversible capacities(312 mah·g^(-1)after 100 cycles at 100 ma·g^(-1),224 mah·g^(-1)after 500 cycles at 1 A·g^(-1))and better rate performances compared with the pure Co-TB compound when served as PIB's ***,multiple in-situ measurement techniques have jointly confirmed that the organic functional groups(C=O,C=N and C=C of benzene rings)and Co^(2+)in Co-TB are the main reversible K-storage sites,including in-situ Fourier transform infrared spectroscopy(FTIR)and X-ray diffraction(XRD),and partial capacity contribution is originated from GNS by the apparent K-storage behavior in the in-situ XRD pattern,proving the possibility of K-storage for metal-organic materials.

关键词： Metal coordination compounds Potassiumion battery Cobalt coordination compound K-storage mechanism

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Correlation between type 2 diabetes mellitus remission and intrapancreatic fat deposition

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World Journal of Clinical Cases 2024年第21期12卷 4536-4542页

作者： Jiang Liu Yue Luo Yin-Rong Zhu Zu-Tao Wu Yan Hou Yu-Jie Xu Li Li cun-Wen ma Division of Endocrinology Wenshan Hospital Affiliated to Kunming University of Science and TechnologyWenshan 663000Yunnan ProvinceChina Department of Radiological Medicine Wenshan Hospital Affiliated to Kunming University of Science and TechnologyWenshan 663000Yunnan ProvinceChina

BACKGROUND Intrapancreatic fat deposition(IPFD)exerts a significant negative impact on patients with type 2 diabetes mellitus(T2DM),accelerates disease deterioration,and may lead to impairedβ-cell quality and *** To investigate the correlation between T2DM remission and *** We enrolled 80 abdominally obese patients with T2DM admitted to our institution from January 2019 to October 2023,including 40 patients with weight lossinduced T2DM remission(research group)and 40 patients with short-term intensive insulin therapy-induced T2DM remission(control group).We comparatively analyzed improvements in IPFD[differential computed tomography(CT)values of the spleen and pancreas and average CT value of the pancreas];levels of fasting blood glucose(FBG),2-h postprandial blood glucose(2hPBG),and insulin;and homeostasis model assessment of insulin resistance(HOma-IR)*** analysis was performed to explore the association between T2DM remission and *** After treatment,the differential CT values of the spleen and pancreas,FBG,2hPBG,and HOma-IR in the research group were significantly lower than those before treatment and in the control group,and the average CT value of the pancreas and insulin levels were significantly *** analysis revealed that the greater the T2DM remission,the lower the amount of IPFD.

关键词： Intrapancreatic fat deposition Type 2 diabetes mellitus Type 2 diabetes mellitus remission Computed tomography value of pancreas Abdominal obesity

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Regulating solid electrolyte interphase film on fluorinedoped hard carbon anode for sodium-ion battery

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Carbon Energy 2024年第6期6卷 200-215页

作者： Cuiyun Yang Wentao Zhong Yuqiao Liu qiang Deng Qian Cheng Xiaozhao Liu Chenghao Yang Guangzhou Key Laboratory for Surface Chemistry of Energy materials New Energy Research InstituteSchool of Environment and EnergySouth China University of TechnologyGuangzhouChina

For the performance optimization strategies of hard carbon,heteroatom doping is an effective way to enhance the intrinsic transfer properties of sodium ions and electrons for accelerating the reaction ***,the previous work focuses mainly on the intrinsic physicochemical property changes of the material,but little attention has been paid to the resulting interfacial regulation of the electrode surface,namely the formation of solid electrolyte interphase(SEI)*** this work,element F,which has the highest electronegativity,was chosen as the doping source to,more effectively,tune the electronic structure of the hard *** effect of F-doping on the physicochemical properties of hard carbon was not only systematically analyzed but also investigated with spectroscopy,optics,and in situ characterization techniques to further verify that appropriate F-doping plays a positive role in constructing a homogenous and inorganic-rich SEI *** experimentally demonstrated link between the electronic structure of the electrode and the SEI film properties can reframe the doping optimization strategy as well as provide a new idea for the design of electrode materials with low reduction kinetics to the *** a result,the optimized sample with the appropriate F-doping content exhibits the best electrochemical performance with high capacity(434.53 ma h g^(-1)at 20ma g^(-1))and excellent rate capability(141 mah g^(-1)at 400 ma g^(-1)).

关键词： F-doping hard carbon reduction kinetics sodium-ion batteries solid electrolyte interphase film

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De novo synthesis of atropisomeric benzofurans via Cu/SPDO complex catalyzed asymmetric formal [3 + 2] annulation

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Science China Chemistry 2024年

作者： Fan-Xiao Meng Xing-Yu Wang Ka Lu Ju-Song Yang Fu-Min Zhang Ai-Jun ma Bao Du Yong-qiang Tu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University School of Chemistry and Chemical Engineering Shanghai Jiao Tong University School of Biotechnology and Health Sciences Wuyi UniversityJiangmen

Herein, the de novo synthesis of atropisomeric benzofurans through the Cu/spirocyclic-pyrrolidine-oxazoline(SPDO) complex catalyze asymmetric formal [3 + 2] cycloaddition between quinones and ynamides is explored, producing a range of structurally diverse axially chiral benzofurans in satisfactory yields with good to excellent enantioselectivities. Furthermore, density functional theory calculations were applied to explain the possible reaction mechanism.

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小片球菌苹果酸-乳酸发酵对不同品种葡萄酒风味的影响

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中国食品学报 2024年第4期24卷 186-198页

作者：浩楠马腾臻强文乐甘肃农业大学食品科学与工程学院、甘肃省葡萄与葡萄酒工程学重点实验室、甘肃省葡萄与葡萄酒产业技术研发中心兰州730070

苹果酸-乳酸发酵是影响红葡萄酒稳定性及风味品质的重要环节。近年来本土乳酸菌的筛选和应用越来越受到研究者和酿酒师的重视。以甘肃河西走廊葡萄酒产区筛选的野生小片球菌C30为供试菌株,探究其在不同品种葡萄酒苹果酸-乳酸发酵过程中... 详细信息

苹果酸-乳酸发酵是影响红葡萄酒稳定性及风味品质的重要环节。近年来本土乳酸菌的筛选和应用越来越受到研究者和酿酒师的重视。以甘肃河西走廊葡萄酒产区筛选的野生小片球菌C30为供试菌株,探究其在不同品种葡萄酒苹果酸-乳酸发酵过程中的动力学参数,以及对葡萄酒理化指标、挥发性香气化合物和感官品质的影响。结果表明:小片球菌C30和商品乳酸菌可在12~36 d完成苹果酸-乳酸发酵(黑比诺和美乐12~18 d,赤霞珠21~36 d),所得酒样的残糖、酒精度、总酸和挥发酸等理化指标均符合国家标准要求。C30菌株发酵的黑比诺和赤霞珠葡萄酒中酯类和醇类香气物质含量显著高于对照酒样,使得酒样呈现出更为浓郁的果香和花香风味。感官评价结果显示,小片球菌C30发酵的赤霞珠酒样香气最为浓郁优雅,酒体醇厚协调,表明该菌株具有酿造产区特色干红葡萄酒的潜力。

关键词：葡萄酒苹果酸-乳酸发酵发酵动力学挥发性化合物感官评价

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Minocycline in the eradication of Helicobacter pylori infection: A systematic review and meta-analysis

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World Journal of Gastroenterology 2024年第17期30卷 2354-2368页

作者： Kai Zhou Cai-Ling Li Hua Zhang Bao-Jun Suo Yu-Xin Zhang Xin-Lu Ren Yu-Xin Wang Chang-Min Mi Ling-Ling ma Li-Ya Zhou Xue-Li Tian Zhi-qiang Song Department of Gastroenterology Peking University Third HospitalBeijing 100191China

BACKGROUND Difficulty in obtaining tetracycline,increased adverse reactions,and relatively complicated medication methods have limited the clinical application of the classic bismuth quadruple ***,the search for new alternative drugs has become one of the research *** recent years,minocycline,as a semisynthetic tetracycline,has demonstrated good potential for eradicating Helicobacter pylori(***)infection,but the systematic evaluation of its role remains *** To explore the efficacy,safety,and compliance of minocycline in eradicating *** *** We comprehensively retrieved the electronic databases of PubMed,Embase,Web of Science,China National Knowledge Infrastructure,SinoMed,and Wanfang database as of October 30,2023,and finally included 22 research reports on *** eradication with minocycline-containing regimens as per the inclusion and exclusion *** eradication rates of *** were calculated using a fixed or a random effect model,and the heterogeneity and publication bias of the studies were *** The single-arm meta-analysis revealed that the minocycline-containing regimens achieved good overall *** eradication rates,reaching 82.3%[95%confidence interval(CI):79.7%-85.1%]in the intention-to-treat analysis and 90.0%(95%CI:87.7%-92.4%)in the per-protocol *** overall safety and compliance of the minocycline-containing regimens were good,demonstrating an overall incidence of adverse reactions of 36.5%(95%CI:31.5%-42.2%).Further by traditional meta-analysis,the results showed that the minocycline-containing regimens were not statistically different from other commonly used eradication regimens in eradication rate and incidence of adverse *** of the adverse reactions were mild to moderate and well-tolerated,and dizziness was relatively prominent in the minocycline-containing regimens(16%).CONCLUSION The minocycline-containing regimens demonstrated good efficacy,safety,and

关键词： Helicobacter pylori Minocycline Eradication Safety Resistance

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