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Journal of Magnesium and Alloys 2024年第1期12卷 225-236页

作者： Shuo wang Daokui Xu Dongliang wang Zhiqiang Zhang baojie wang Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang110819China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China Engineering Research Center of Advanced Materials Preparing Technology Ministry of EducationNortheastern UniversityShenyang110819China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang110159China Binzhou Institute of Technology BinzhouShandong Province256606China Shandong Key Laboratory of Advanced Aluminium Materials and Technology BinzhouShandong Province256606China

Through exploring the stress corrosion cracking(SCC)behaviors of the as-cast Mg-8%Li and Mg-8%Li-6%Zn-1.2%Y alloys in a 0.1 M NaCl solution,it revealed that the SCC susceptibility index(I_(SCC))of the Mg-8%Li alloy was 47%,whilst the I_(SCC)of the Mg-8%Li-6%Zn-1.2%Y alloy was 68%.Surface,cross-sectional and fractography observations indicated that for the Mg-8%Li alloy,theα-Mg/β-Li interfaces acted as the preferential crack initiation sites and propagation paths during the SCC process.With regard to the Mg-8%Li-6%Zn-1.2%Y alloy,the crack initiation sites included the I-phase and the interfaces of I-phase/β-Li andα-Mg/β-Li,and the preferential propagation paths were the I-phase/β-Li andα-Mg/β-Li interfaces.Moreover,the SCC of the two alloys was concerned with hydrogen embrittlement(HE)mechanism.

关键词： Magnesium-lithium alloy Stress corrosion cracking I-phase Fracture analysis

Development of a deviation package method for low-cost robust optimization in compressor blade design

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Chinese Journal of Aeronautics 2024年第4期37卷 166-180页

作者： Mingzhi LI Xianjun YU Dejun MENG Guangfeng AN baojie LIU Research Institute of Aero-Engine Beihang UniversityBeijing 100191China National Key Laboratory of Science&Technology on Aero-Engine Aero-Thermodynamics Beihang UniversityBeijing 100191China AECC Shenyang Engine Research Institute Shenyang 110015China

Manufacture variations can greatly increase the performance variability of compressor blades. Current robust design optimization methods have a critical role in reducing the adverse impact of the variations, but can be affected by errors if the assumptions of the deviation models and distribution parameters are inaccurate. A new approach for robust design optimization without the employment of the deviation models is proposed. The deviation package method and the interval estimation method are exploited in this new approach. Simultaneously, a stratified strategy is used to reduce the computational cost and assure the optimization accuracy. The test case employed for this study is a typical transonic compressor blade profile, which resembles most of the manufacture features of modern compressor blades. A set of 96 newly manufactured blades was measured using a coordinate measurement machine to obtain the manufacture variations and produce a deviation package. The optimization results show that the scatter of the aerodynamic performance for the optimal robust design is 20% less than the baseline value. By comparing the optimization results obtained from the deviation package method with those obtained from widely-used methods employing the deviation model, the efficiency and accuracy of the deviation package method are demonstrated. Finally, the physical mechanisms that control the robustness of different designs were further investigated, and some statistical laws of robust design were extracted.

关键词： Manufacture variations Robust design optimization Compressor leading edge Aerodynamics Physical mechanism

Local Adaptive Gradient Variance Attack for Deep Fake Fingerprint Detection

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Computers, Materials & Continua 2024年第1期78卷 899-914页

作者： Chengsheng Yuan baojie Cui Zhili Zhou Xinting Li Qingming Jonathan Wu Engineering Research Center of Digital Forensics Ministry of EducationNanjing University of Information Science and TechnologyNanjing210044China School of Computer Science Nanjing University of Information Science and TechnologyNanjing210044China Institute of Artificial Intelligence and Blockchain Guangzhou UniversityGuangzhou510006China School of International Relations National University of Defense TechnologyNanjing210039China Department of Electrical and Computer Engineering University of WindsorWindsorN9B 3P4Canada

In recent years,deep learning has been the mainstream technology for fingerprint liveness detection(FLD)tasks because of its remarkable performance.However,recent studies have shown that these deep fake fingerprint detection(DFFD)models are not resistant to attacks by adversarial examples,which are generated by the introduction of subtle perturbations in the fingerprint image,allowing the model to make fake judgments.Most of the existing adversarial example generation methods are based on gradient optimization,which is easy to fall into local optimal,resulting in poor transferability of adversarial attacks.In addition,the perturbation added to the blank area of the fingerprint image is easily perceived by the human eye,leading to poor visual quality.In response to the above challenges,this paper proposes a novel adversarial attack method based on local adaptive gradient variance for DFFD.The ridge texture area within the fingerprint image has been identified and designated as the region for perturbation generation.Subsequently,the images are fed into the targeted white-box model,and the gradient direction is optimized to compute gradient variance.Additionally,an adaptive parameter search method is proposed using stochastic gradient ascent to explore the parameter values during adversarial example generation,aiming to maximize adversarial attack performance.Experimental results on two publicly available fingerprint datasets show that ourmethod achieves higher attack transferability and robustness than existing methods,and the perturbation is harder to perceive.

关键词： FLD adversarial attacks adversarial examples gradient optimization transferability

Dynamic immune recovery process after liver transplantation revealed by single-cell multi-omics analysis

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The Innovation 2024年第3期5卷 55-68页

作者： Rui wang Xiao Peng Yixin Yuan baojie Shi Yuan Liu Hengxiao Ni Wenzhi Guo Qiwei Yang Pingguo Liu Jie wang Zhaojie Su Shengnan Yu Dehua Liu Jinyan Zhang Junjie Xia Xueni Liu Hao Li Zhengfeng Yang Zhihai Peng Organ Transplantation Clinical Medical Center of Xiamen University Department of General SurgeryXiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen 361102China Organ Transplantation Institute of Xiamen University Xiamen Human Organ Transplantation Quality Control CenterXiamen Key Laboratory of Regeneration MedicineFujian Provincial Key Laboratory of Organ and Tissue RegenerationSchool of MedicineXiamen UniversityXiamen 361102China Department of General Surgery Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China State Key Laboratory of Cellular Stress Biology School of Life SciencesFaculty of Medicine and Life SciencesXiamen UniversityXiamen 361102China Department of Hepatobiliary and Pancreatic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000China Department of Hepatobiliary&Pancreatic Surgery The National Key Clinical SpecialtyZhongshan Hospital of Xiamen UniversitySchool of MedicineXiamen UniversityXiamen 361102China Precision Research Center for Refractory Diseases Institute for Clinical ResearchShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 201620China

Elucidating the temporal process of immune remodeling under immunosuppressive treatment after liver transplantation(LT)is critical for precise clinical management strategies.Here,we performed a single-cell multi-omics analysis of peripheral blood mononuclear cells(PBMCs)collected from LT patients(with and without acute cellular rejection[ACR])at 13 time points.Validation was performed in two independent cohorts with additional LT patients and healthy controls.Our study revealed a four-phase recovery process after LT and delineated changes in immune cell composition,expression programs,and interactions along this process.The intensity of the immune response differs between the ACR and non-ACR patients.Notably,the newly identified inflamed NK cells,CD14+RNASE2+monocytes,and FOS-expressing monocytes emerged as predictive indicators of ACR.This study illuminates the longitudinal evolution of the immune cell landscape under tacrolimus-based immunosuppressive treatment during LT recovery,providing a four-phase framework that aids the clinical management of LT patients.

关键词： process analysis precise

Alternate cotton-peanut intercropping:a new approach to increasing productivity and minimizing environmental impact

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Journal of Cotton Research 2024年第1期7卷 101-103页

作者： CHI baojie DONG Hezhong College of Agricultural Science and Technology Shandong Agriculture and Engineering UniversityJinan 250100China State Key Laboratory of Nutrient Use and Management Institute of Industrial CropsShandong Academy of Agricultural SciencesJinan 250100China

Recent publications have highlighted the development of an alternate cotton-peanut intercropping as a novel strat-egy to enhance agricultural productivity.In this article,we provide an overview of the progress made in the alternate cotton-peanut intercropping,specifically focusing on its yield benefits,environmental impacts,and the underlying mechanisms.In addition,we advocate for future investigations into the selection or development of appropriate crop varieties and agricultural equipment,pest management options,and the mechanisms of root-canopy interactions.This review is intended to provide a valuable reference for understanding and adopting an alternate intercropping system for sustainable cotton production.

关键词： Cotton Peanut Alternate intercropping Productivity

1990和2017年中国鼻咽癌疾病负担及其公平性研究

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中华疾病控制杂志 2024年第3期28卷 323-328页

作者：侯宝杰袁萍四川大学华西公共卫生学院流行病与卫生统计学系华西第四医院成都610041

目的分析中国鼻咽癌的疾病负担及公平性,为科学防治提供依据。方法利用2017年全球疾病负担数据,以省级行政区为单位,利用空间自相关分析鼻咽癌疾病负担的空间分布,利用斜率指数(slope index,SI)和集中指数(concentration index,CI)分析... 详细信息

目的分析中国鼻咽癌的疾病负担及公平性,为科学防治提供依据。方法利用2017年全球疾病负担数据,以省级行政区为单位,利用空间自相关分析鼻咽癌疾病负担的空间分布,利用斜率指数(slope index,SI)和集中指数(concentration index,CI)分析鼻咽癌疾病负担的公平性。结果1990和2017年高-高聚集区主要集中在南方,低-低聚集区主要集中在北方,呈南高北低的分布特点。和1990年相比,2017年鼻咽癌的伤残调整寿命年(disability adjusted life year,DALY)总体下降11.20%、标化DALY率下降24.80%,但澳门地区、陕西和新疆等地上升。1990年DALY和标化DALY率的SI为-34.71、-6.00,CI为-0.08、0.14;2017年DALY和标化DALY率的SI为9.74、12.46,CI为0.07、0.04。结论相比1990年,2017年中国鼻咽癌疾病负担有所下降,但各地分布不平衡,存在不平等现象,且仍有一些地区疾病负担上升,应重点关注高疾病负担聚集区和出现上升的地区,改善鼻咽癌疾病负担的不公平性。

关键词：鼻咽癌空间自相关公平性

Effect of CaCl_(2) and NaHCO_(3) in Physiological Saline Solution on the Corrosion Behavior of an As-Extruded Mg–Zn–Y–Nd alloy

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Acta Metallurgica Sinica(English Letters) 2021年第2期34卷 239-247页

作者： baojie wang Daokui Xu Tianyu Zhao Liyuan Sheng School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang 110159China CAS Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of Sciences62 Wencui RoadShenyang 110016China Shenzhen Institute Shenzhen Key Lab Human Tissue Regenerate and RepairPeking UniversityShenzhen 518057China

In this study,the corrosion behaviors of an as-extruded Mg–4%Zn–2%Y–1.8%Nd(in wt.%)alloy in different physiological saline solutions were investigated and compared.The results indicated that the alloy in the 9 g/L NaCl had the higher corrosion resistance than that containing with CaCl_(2) and NaHCO3.Moreover,it demonstrated that the corrosion behaviors of the alloy in two types of solutions were all dependent on the pre-immersion time.In the 9 g/L NaCl solution,the corrosion current densities of the alloy decreased firstly with the pre-immersion time being<4 h and then increased with the pre-immersion time prolonging from 4 to 48 h.However,in the 9 g/L NaCl solution containing with CaCl_(2) and NaHCO3,the corrosion current density of the alloy exhibited the adverse trend with the prolonging the pre-immersion time.Failure analysis demonstrated that the changes of corrosion resistance in two solutions were mainly dominated by the constituents formed in surface films.

关键词： Magnesium alloy Biomaterial Corrosion Simulated body fluids Pre-immersion

作为方法的“典型现象”——钱理群文学史研究的实践与启示

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现代中文学刊 2024年第1期 98-103页

作者：谢保杰北京信息科技大学传媒学院

文学史研究与写作是钱理群学术研究的重镇,他在文学史研究与写作领域进行过多种形式的实验。“典型现象”研究作为一种方法,受到鲁迅与王瑶的启发。“典型现象”研究是钱理群文学史研究与写作的基本方法,呈现了钱理群对文学史认识与把... 详细信息

文学史研究与写作是钱理群学术研究的重镇,他在文学史研究与写作领域进行过多种形式的实验。“典型现象”研究作为一种方法,受到鲁迅与王瑶的启发。“典型现象”研究是钱理群文学史研究与写作的基本方法,呈现了钱理群对文学史认识与把握的独特理解。作为一种方法论,“典型现象”研究对中国现代文学学科具有重要的意义与价值。

关键词：钱理群典型现象文学史研究鲁迅王瑶

等离子体处理的V掺杂镍铁基电催化剂用于高效析氢

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太阳能学报 2024年第3期45卷 305-309页

作者：靳葆杰王婧朱小宁黄林泉陕西煤业化工技术研究院西安710100

该文采用一步水热法在泡沫镍表面原位生长V掺杂的镍铁层状双氢氧化物(NiFe LDH),结合H_(2)等离子体还原法,构建Ni纳米粒子锚定在大量氧空位和镍空位上的异质结构,增加活性位点数量,提升NiFe LDH的HER活性。结果表明,在1 mol/L的KOH电解... 详细信息

该文采用一步水热法在泡沫镍表面原位生长V掺杂的镍铁层状双氢氧化物(NiFe LDH),结合H_(2)等离子体还原法,构建Ni纳米粒子锚定在大量氧空位和镍空位上的异质结构,增加活性位点数量,提升NiFe LDH的HER活性。结果表明,在1 mol/L的KOH电解液中电流密度为10 mA/cm^(2)下催化剂的过电势仅为37.5 mV,Tafel斜率为49 mV/dec,经过100 h的恒电流测试其析氢活性无明显衰减。此外,全解水测试中其同样具有良好的析氢活性和稳定性,10 mA/cm^(2)电流密度下全解水电压仅为1.57 V,经过1000 h的恒电流测试其析氢活性无明显下降。

关键词：等离子体镍铁氢氧化物电催化剂析氢反应异质结

Effect of Texture on Biodegradable Behavior of an As-Extruded Mg–3%Al–1%Zn Alloy in Phosphate Buffer Saline Medium

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Journal of Materials Science & Technology 2016年第7期32卷 646-652页

作者： baojie wang Daokui Xu Junhua Dong Wei Ke Environmental Corrosion Center. institute of Metal Research. Chinese Academy of Sciences 5henyang 110016 China

In this work, the corrosion behavior of two differently oriented surfaces of an as-extruded Mg-3%Al- 1%Zn （AZ31） bar in a simulated body fluid of phosphate buffer saline （PBS） medium was investigated and compared, and the effect of crystallographic texture on corrosion resistance of the alloy was deeply described. The results showed that at the early stage of immersion, a layer of compact and flat film formed easily on surfaces of both oriented samples. With prolonged immersion time, the degradation of formed corrosive films started and their severity was quite sensitive to the composed crystallographic planes of sample surfaces. For the surface containing highly concentrated orientation of {10-10} and {11-20} prism planes, the degradation of formed corrosive film was quite slight and only occurred at some particular sites even after immersion for 48 h. Thus, the film could keep good corrosive protection to the under- neath substrate. However, for the surface containing [0002} basal planes, {10-10} and {11-20} prism planes, the degradation of corrosive production film occurred widely, resulting in further decrease in the corrosion resistance of immersed samples,

关键词： Mg alloyCorrosion resistanceTextureBiodegradationSurface film