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Microstructure and texture evolution of Cu-Cr-Co-Ti alloys during the two-stage cryorolling

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Rare Metals 2024年第9期43卷 4535-4547页

作者： Jia-Jun Zhang Long-Jian Li Zhi-Feng Liu zong-ning Chen en-Yu Guo Hui-Jun Kang Ren-Geng Li Tong-min Wang Key Laboratory of Solidification Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Center of Hyper-Gravity Experimental and Interdisciplinary Research Zhejiang UniversityHangzhou 310058China ningbo Institute of Dalian University of Technology Ningbo 315000China Key Laboratory for Light-Weight Materials Nanjing Tech UniversityNanjing 210009China

This study entailed an investigation of the mechanical properties,microstructural and texture orientation evolutions of Cu-Cr-Co-Ti alloys prepared via twostage cryorolling and intermediate aging *** this end,X-ray diffraction and electron backscatter diffraction were *** results indicate that the two-stage cryorolling and intermediate aging treatments led to the development of profuse twin bundles and significantly enhanced the mechanical *** initial cryorolling led to coplanar slip and developed a strong Y({111})orientation,accelerating the formation of Goss({011})orientation and a Brass-type *** intermediate aging treatment relieved the restriction on dislocation slip and reoriented the grains toward the Copper({112})and Z({111})*** Z orientation,with a relatively high volume fraction,dominated the *** cryorolling intensified twinning and shear banding,transforming the Copper-type shear bands into Brass-type shear bands with rhomboidal prism *** areas inside the Brasstype shear bands exhibited a Y orientation,and the areas outside the shear bands exhibited a stable Brass-type *** evident decrease in the weighted Schmid factors demonstrated that the two-stage cryorolling and intermediate aging treatment can modify the texture evolution and aid the design of high-performance Cu alloys.

关键词： Copper alloys Two-stage cryorolling Macrotexture evolution Electron backscatter diffraction Schmid factor

Effectiveness and tolerability of programmed cell death protein-1 inhibitor+chemotherapy compared to chemotherapy for upper gastrointestinal tract cancers

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1613-1625页

作者： Xiao-min Zhang Ting Yang Ying-Ying Xu bao-Zhong Li Wei Shen Wen-Qing Hu Cai-Wen Yan Liang zong Department of Central Laboratory Changzhi People’s HospitalThe Affiliated Hospital of Changzhi Medical CollegeChangzhi 046000Shanxi ProvinceChina Department of Gastrointestinal Surgery Yizheng People’s HospitalThe Affiliated Hospital of Yangzhou UniversityYangzhou 225000Jiangsu ProvinceChina Department of General Surgery Anyang Tumor HospitalAnyang 455000Henan ProvinceChina Department of General Surgery Wuxi People’s Hospital Affiliated to Nanjing Medical UniversityWuxi 214023Jiangsu ProvinceChina Department of Gastrointestinal Surgery Changzhi People’s HospitalThe Affiliated Hospital of Changzhi Medical CollegeChangzhi 046000Shanxi ProvinceChina Department of Gastroenterology Changzhi People’s HospitalThe Affiliated Hospital of Changzhi Medical CollegeChangzhi 046000Shanxi ProvinceChina

BACKGROUND The combination of programmed cell death protein-1(PD-1)inhibitor and che-motherapy is approved as a standard first-or second-line treatment in patients with advanced oesophageal or gastric ***,it is unclear whether this combination is superior to chemotherapy *** To assess the comparative effectiveness and tolerability of combining PD-1 inhibitors with chemotherapy vs chemotherapy alone in patients with advanced gastric cancer,gastroesophageal junction(GEJ)cancer,or oesophageal *** We searched the PubMed and Embase databases for studies that compared the efficacy and tolerance of PD-1 inhibitors in combination with chemotherapy vs chemotherapy alone in patients with advanced oesophageal or gastric *** employed either random or fixed models to analyze the outcomes of each clinical trial,en-compassing data on overall survival(OS),progression-free survival(PFS),objective response rate,and adverse events(AEs).RESULTS Nine phase 3 clinical trials(7016 advanced oesophageal and gastric cancer patients)met the inclusion *** meta-analysis demonstrated that the pooled PD-1 inhibitor+chemotherapy group had a significantly longer OS than the chemotherapy-alone group[hazard ratio(HR)=0.76,95%confidence interval(CI):0.71-0.81];the pooled PFS result was consistent with that of OS(HR=0.67,95%CI:0.61-0.74).The count of patients achieving an objective response in the PD-1 inhibitor+chemotherapy group surpassed that of the chemotherapy-alone group[odds ratio(OR)=1.86,95%CI:1.59-2.18].AE incidence was also higher in the combination-therapy group than in the chemotherapy-alone group,regardless of whether≥grade 3 only(OR=1.30,95%CI:1.07-1.57)or all AE grades(OR=1.88,95%CI:1.39-2.54)were *** performed a subgroup analysis based on the programmed death-ligand 1(PD-L1)combined positive score(CPS)and noted extended OS and PFS durations within the CPS≥1,CPS≥5,and CPS≥10 subgroups of the PD-1 inhibitor+chemotherapy ***

关键词： Programmed cell death protein-1 inhibitor Chemotherapy Oesophageal squamous cell carcinoma Gastric/gastroesophageal junction adenocarcinoma Overall survival Progression-free survival Objective response rate Adverse event

Electrical stress and acid orange 7 synergistically clear the blockage of electron flow in the methanogenesis of low-strength wastewater

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environmental Science and Ecotechnology 2024年第4期20卷 291-299页

作者： ze-Chong Guo min-Hua Cui Chun-Xue Yang Hong-Liang Dai Tong-Yi Yang Lin-Zhi Zhai Yong Chen Wen-zong Liu Ai-Jie Wang School of environmental and Chemical engineering Jiangsu University of Science and TechnologyZhenjiang212100China State Key Laboratory of Urban Water Resource and environment School of EnvironmentHarbin Institute of TechnologyHarbin150090China Jiangsu Key Laboratory of Anaerobic Biotechnology Jiangnan UniversityWuxi214122China School of Civil and environmental engineering Harbin Institute of TechnologyShenzhen518055China School of Geography and Tourism Harbin UniversityHarbin150001China School of environmental Science and engineering Huazhong University of Science and TechnologyWuhan430074China

energy recovery from low-strength wastewater through anaerobic methanogenesis is constrained by limited substrate *** development of efficient methanogenic communities is critical but *** we develop a strategy to acclimate methanogenic communities using conductive carrier(CC),electrical stress(ES),and Acid Orange 7(AO7)in a modified *** synergistic integration of CC,ES,and AO7 precipitated a remarkable 72-fold surge in methane production rate compared to the *** increase was attributed to an altered methanogenic community function,independent of the continuous presence of AO7 and ***7 acted as an external electron acceptor,accelerating acetogenesis from fermentation intermediates,restructuring the bacterial community,and enriching electroactive bacteria(EAB).Meanwhile,CC and ES orchestrated the assembly of the archaeal community and promoted electrotrophic methanogens,enhancing acetotrophic methanogenesis electron flow via a mechanism distinct from direct electrochemical *** collective application of CC,ES,and AO7 effectively mitigated electron flow impediments in low-strength wastewater methanogenesis,achieving an additional 34%electron recovery from the *** study proposes a new method of amending anaerobic digestion systems with conductive materials to advance wastewater treatment,sustainability,and energy self-sufficiency.

关键词： Methanogenesis Conductive carrier Electrical stress Acid orange 7 Electron transfer

多特征融合和孪生注意力网络的高分辨率遥感图像目标检测

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吉林大学学报（工学版） 2024年第1期54卷 240-250页

作者：王春华李恩泽肖敏黄淮学院动画学院河南驻马店463000 武汉理工大学计算机与人工智能学院武汉430063

为提高高分辨率遥感图像目标检测效果,本文将多特征融合方法和孪生注意力网络相结合,提出一种新的目标检测方法。构建遥感图像目标检测的整体框架,基于锚框模型对遥感图像目标进行多层特征的提取及融合;运用孪生注意力网络对遥感图像目... 详细信息

为提高高分辨率遥感图像目标检测效果,本文将多特征融合方法和孪生注意力网络相结合,提出一种新的目标检测方法。构建遥感图像目标检测的整体框架,基于锚框模型对遥感图像目标进行多层特征的提取及融合;运用孪生注意力网络对遥感图像目标实时视觉跟踪检测,引入通道和空间的双重自注意力机制,提高目标图像的特征表达能力,由此得到更加精准的检测结果。实验分析结果表明,本文方法的平均总体精度为93.8,F1指数平均值为0.88,Kappa系数平均值为0.93,均明显高于对比方法,说明本文方法具有较好的检测效果。

关键词：多特征融合高分辨率遥感图像孪生注意力目标检测语义特征

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Catalytic Oxidation of Cyclohexene with Molecular Oxygen on Hydrotalcite－like Compounds

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Chemical Research in Chinese Universities 1995年第3期11卷 256-258页

作者： Guo, Jun Wang, ning Jiao, Qing-ze Jiang, Da-zhen Yang, Guang-hui min, en-ze JILIN UNIV DEPT CHEMCHANGCHUN 130023PEOPLES R CHINA EDUC INST JILIN PROV DEPT CHEMCHANGCHUN 130021PEOPLES R CHINA RES INST PETR PROC BEIJING 100083PEOPLES R CHINA

ＣａｔａｌｙｔｉｃＯｘｉｄａｔｉｏｎｏｆＣｙｃｌｏｈｅｘｅｎｅｗｉｔｈＭｏｌｅｃｕｌａｒＯｘｙｇｅｎｏｎＨｙｄｒｏｔａｌｃｉｔｅ－ＩｉｋｅＣｏｍｐｏｕｎｄｓＧＵＯＪｕｎ，ＷＡＮＧＮｉｎｇ，ＪＩＡＯＱｉｎｇ－ｚｅａｎｄ... 详细信息

ＣａｔａｌｙｔｉｃＯｘｉｄａｔｉｏｎｏｆＣｙｃｌｏｈｅｘｅｎｅｗｉｔｈＭｏｌｅｃｕｌａｒＯｘｙｇｅｎｏｎＨｙｄｒｏｔａｌｃｉｔｅ－ＩｉｋｅＣｏｍｐｏｕｎｄｓＧＵＯＪｕｎ，ＷＡＮＧＮｉｎｇ，ＪＩＡＯＱｉｎｇ－ｚｅａｎｄＪＩＡＮＧＤａ－ｚｈｅｎ（Ｄｅｐａ...

关键词： Catalytic Oxidation Cyclohexene Molecular oxygen

Purification of copper foils driven by single crystallization

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Chinese Physics B 2024年第2期33卷 506-511页

作者：寇金宗赵孟泽李兴光何梦林杨方友刘科海成庆秋任云龙刘灿付莹吴慕鸿刘开辉王恩哥 Songshan Lake Materials Laboratory Dongguan 523808China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China Guangdong Provincial Key Laboratory of Quantum engineering and Quantum Materials School of PhysicsSouth China Normal UniversityGuangzhou 510006China Guangdong–Hong Kong Joint Laboratory of Quantum Matter Frontier Research Institute for PhysicsSouth China Normal UniversityGuangzhou 510006China State Key Laboratory for Mesoscopic Physics Frontiers Science Center for Nano-optoelectronicsSchool of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Quantum State Construction and Manipulation(ministry of Education) Department of PhysicsRenmin University of ChinaBeijing 100872China International Center for Quantum Materials Collaborative Innovation Center of Quantum MatterPeking UniversityBeijing 100871China School of Physics Liaoning UniversityShenyang 110036China

High-purity copper(Cu) with excellent thermal and electrical conductivity, is crucial in modern technological applications, including heat exchangers, integrated circuits, and superconducting magnets. The current purification process is mainly based on the zone/electrolytic refining or anion exchange, however, which excessively relies on specific integrated equipment with ultra-high vacuum or chemical solution environment, and is also bothered by external contaminants and energy consumption. Here we report a simple approach to purify the Cu foils from 99.9%(3N) to 99.99%(4N) by a temperature-gradient thermal annealing technique, accompanied by the kinetic evolution of single crystallization of *** success of purification mainly relies on(i) the segregation of elements with low effective distribution coefficient driven by grain-boundary movements and(ii) the high-temperature evaporation of elements with high saturated vapor *** purified Cu foils display higher flexibility(elongation of 70%) and electrical conductivity(104% IACS) than that of the original commercial rolled Cu foils(elongation of 10%, electrical conductivity of ~ 100% IACS). Our results provide an effective strategy to optimize the as-produced metal medium, and therefore will facilitate the potential applications of Cu foils in precision electronic products and high-frequency printed circuit boards.

关键词： purification copper foil thermal annealing technique single crystallization

Incorporating mitigation strategies in machine learning for landslide susceptibility prediction

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Geoscience Frontiers 2024年第5期15卷 399-414页

作者： Hai-min Lyu Zhen-Yu Yin Pierre-Yves Hicher Farid Laouafa Key Laboratory for Resilient Infrastructures of Coastal Cities(MOE) College of Civil and Transportation EngineeringShenzhen UniversityShenzhenChina Department of Civil and environmental engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina Research Institute of Civil engineering and Mechanics(GeM) UMR CNRS 6183Ecole Centrale de NantesFrance National Institute for Industrial environment and Risks(INERIS) Verneuil-en-HalatteFrance

This study proposes an approach that considers mitigation strategies in predicting landslide susceptibility through machine learning(ML)and geographic information system(GIS)*** models,such as random forest(RF),logistic regression(LR),and support vector classification(SVC)are incorporated into GIS to predict landslide susceptibilities in Hong *** consider the effect of mitigation strategies on landslide susceptibility,non-landslide samples were produced in the upgraded area and added to randomly created samples to serve as ML models in training *** scenarios were created to compare and demonstrate the efficiency of the proposed approach;Scenario I does not considering landslide control while Scenario II considers mitigation strategies for landslide *** largest landslide susceptibilities are 0.967(from RF),followed by 0.936(from LR)and 0.902(from SVC)in Scenario II;in Scenario I,they are 0.986(from RF),0.955(from LR)and 0.947(from SVC).This proves that the ML models considering mitigation strategies can decrease the current landslide *** comparison between the different ML models shows that RF performed better than LR and SVC,and provides the best prediction of the spatial distribution of landslide susceptibilities.

关键词： Machine learning Landslide susceptibility Spatial prediction Mitigation strategies

Pilaring of Zn_2Al Layered Double Hydroxide by Dawson Polyoxometalate Anions

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Chemical Research in Chinese Universities 1998年第2期14卷 68-70页

作者： GUO Jun LI Yun-lun JIAO Qing-ze JIANG Da-zhen min en-ze Department of Chemistry Jilin UniversityChangchun130023 Research Institute of Petroleum Processing Beijing100083

Zn2Al layered double hydroxide pillared with Dawson polyoxometalates,P2W17ZO8-61(Z=Mn2+,Co2+,Ni2+,Cu2+,Zn2+)was prepared.A basal space ofca.16 nm indicates the intercalated Dawson ions to be oriented with their C2 axis perpendicular to the double hydroxide layers(with the exception of P2W17ZnLDH).The IR and^(13)P MASNMR spectral reveal that the Dawson ions retain their integrity in the interlayer space of LDH.A preliminary study shows that these compounds are highly active catalysts for the oxidation of cyclohexene with molecular oxygen.

关键词： Pillaring Dawson structure Polyoxometalate anions

A method for observing tridimensional morphology of sulfide inclusions by non-aqueous solution electrolytic etching

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Journal of Iron and Steel Research International 2019年第3期26卷 275-284页

作者： Dong Zhang Ping Shen Jian-bo Xie Jin-min An zong-ze Huang Jian-xun Fu State Key Laboratory of Advanced Special Steel Shanghai Key Laboratory of Advanced Ferrous Metallurgy School of Materials Science and Engineering Shanghai University Shanghai 200072 China State Key Laboratory of Development and Application Technology of Automotive Steel (baosteel Group) Shanghai 20190 China

Three-dimensional investigation of sulfides is required in order to improve the mechanical properties of steel by controlling the sulfides in the steel.A method including its principles and device is introduced for the investigation of threedimensional morphology of *** method is suitable for gear steel,free cutting steel,non-quenched steel,tempered steel(ws≥0.02 wt.%),*** influences of current density,time,and temperature on the exposure degree of sulfide inclusions were investigated by using 16MnCrS5 *** best parameters of electrolytic etching of sulfur steel,as found by experimentation,are as follows:current density,37.5-52.5 mA/cm2;time,30-35 min;and temperature,—10 to 0℃.Under these conditions,the three-dimensional morphology of sulfide inclusions in sulfur-bearing steel can be exposed effectively.

关键词： Sulfide Non-aqueous electrolyte Electrolytic etching Three-dimensional morphology