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Bimetallic NiCoP catalysts anchored on phosphorus-doped lignin-based carbon for robust oxygen evolution performance

Rare Metals 2024年第7期43卷 3084-3095页

作者： ling-ying-Zi Xiong Bo-Wen Liu Lei Du Yue-Kuan Zhou Xu-Liang Lin Huan Wang Guangdong Engineering Technology Research Center for Sensing Materials&Devices Guangzhou Key Laboratory of Sensing Materials&DevicesSchool of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China School of Chemical Engineering and Light Industry Guangdong University of TechnologyGuangzhou 510006China Guangdong Provincial Laboratory of Chemistry and Fine Chemical Engineering Jieyang Center Jieyang 515200China Sustainable Energy and Environment Thrust Function HubThe Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511400China Division of Emerging Interdisciplinary Areas Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyHong Kong 999077China State Key Lab of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China

Oxygen evolution reaction(OER)catalysts are the key core materials that determine the performance of fuel cells,metal-air batteries,electrolytic water decomposition,and other *** this work,a green lignin-based non-precious metal OER catalyst was prepared by a simple ***,c arboxylated lignin was used to complex Ni and Co in situ,and then they were placed with sodium hypophosphite in the same tube furnace for upstream and downstream high-temperature calcination to construct a lignin carbon-based Ni-Co bimetallic OER catalyst(NiCoP@C).The synthesized catalyst is a porous bimetallic phosphide with a three-dimensional network structure and high-density electrochemical active ***@C exhibited favorable catalytic activity for the oxygen evolution reaction(OER)with overpotential of 280 mV at 10 mA·cm~(-2)and a Tafel slope of 77 mV·dec~(-1).Additionally,it exhibited remarkable durability during *** functional theory(DFT)calculations revealed that by leveraging the distinctive structure of transition metal phosphide nanoparticles incorporated into a reticulated substrate,the NiCoP@C catalyst offered an increased number of active sites for OER catalysis,significantly enhancing its stability during practical *** present study broadens the utilization pathways of biomass to"turn waste into treasure,"aligning the development concept of green sustainable development.

关键词： Oxygen evolution reaction Lignin Carbon-based catalyst Nickel-cobalt bimetal Metal phosphide

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Effect of low-degree astigmatism on the objective visual quality

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International Journal of Ophthalmology(English edition) 2024年第6期17卷 1086-1093页

作者： ling-ying Ye Shu-Feng Li Jing-Jing Zuo Jin Li Hui-Xiang Ma National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhou 325027Zhejiang ProvinceChina

AIM:To evaluate the effect of low-degree astigmatism on objective visual quality through the Optical Quality Analysis System(OQAS).METHODS:This study enrolled 46 participants(aged 23 to 30y,90 eyes)with normal or corrected-to-normal *** cylindrical lenses(0,0.5,0.75,1.0,and 1.25 D)were placed at the axial direction(180°,45°,90°,and 135°)in front of the eyes with the best correction to form 16 types of regular low-degree *** was used to detect the objective visual quality,recorded as the objective scattering index(OSI),OQAS values at contrasts of 100%,20%,and 9%predictive visual acuity(OV100%,OV20%,and OV9%),modulation transfer function cut-off(MTFcut-off)and Strehl ratio(SR).The mixed effect linear model was used to compare objective visual quality differences between groups and examine associations between astigmatic magnitude and objective visual quality ***:Apparent negative relationships between the magnitude of low astigmatism and objective visual quality were *** increase of OSI per degree of astigmatism at 180°,45°,90°,and 135°axis were 0.38(95%CI:0.35,0.42),0.50(95%CI:0.46,0.53),0.49(95%CI:0.45,0.54)and 0.37(95%CI:0.34,0.41),*** decrease of MTFcut-off per degree of astigmatism at 180°,45°,90°,and 135°axis were-10.30(95%CI:-11.43,-9.16),-12.73(95%CI:-13.62,-11.86),-12.75(95%CI:-13.79,-11.70),and-9.97(95%CI:-10.92,-9.03),*** the same astigmatism degree,OSI at 45°and 90°axis were higher than that at 0°and 135°axis,while MTFcut-off were ***:Low astigmatism of only 0.50 D can significantly reduce the objective visual quality.

关键词： low-degree astigmatism objective visual quality Optical Quality Analysis System

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Effect of interrupted aging on mechanical properties and corrosion resistance of 7A75 aluminum alloy

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Transactions of Nonferrous Metals Society of China 2024年第8期34卷 2415-2430页

作者： Xian-wen YANG ling-ying YE Yong ZHANG Quan-shi CHENG School of Materials Science and Engineering Central South UniversityChangsha 410083China Aerospace Precision Production Co. Ltd.Tianjin 300300China

The effects of interrupted aging on mechanical properties and corrosion resistance of 7A75 aluminum alloy extruded bar were investigated through various analyses,including electrical conductivity,mechanical properties,local corrosion properties,and slow strain rate tensile stress corrosion *** characterization techniques such as metallographic microscopy,scanning electron microscopy(SEM),and transmission electron microscopy(TEM)were also *** results indicate that the tensile strength of the alloy produced by T6I6 aging is similar to that produced by T6I4 aging,and it even exceeds 700 ***,the yield strength increases by 52.7 MPa,reaching 654.8 MPa after T6I6 aging *** maximum depths of intergranular corrosion(IGC)and exfoliation corrosion(EXCO)decrease from 116.3 and 468.5μm to 89.5 and 324.3μm,*** stress corrosion factor also decreases from 2.1%to 1.6%.These findings suggest that the alloy treated with T6I6 aging exhibits both high strength and excellent stress corrosion cracking ***,when the alloy is treated with T6I4,T6I6 and T6I7 aging,the sizes of grain boundary precipitates(GBPs)are found to be 5.2,18.4,and 32.8 nm,*** sizes of matrix precipitates are 4.8,5.7 and 15.7 nm,*** atomic fractions of Zn in GBPs are 9.92 at.%,8.23 at.%and 6.87 at.%,respectively,while the atomic fractions of Mg are 12.66 at.%,8.43 at.%and 7.00 at.%,***,the atomic fractions of Cu are 1.83 at.%,2.47 at.%and 3.41 at.%,respectively.

关键词： 7A75 aluminum alloy interrupted aging aging precipitation behavior mechanical properties intergranular corrosion exfoliation corrosion stress corrosion cracking

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Evolution of mechanical properties,localized corrosion resistance and microstructure of a high purity Al-Zn-Mg-Cu alloy during non-isothermal aging

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Journal of Central South University 2024年第6期31卷 1790-1807页

作者： DAI Xuan-xuan LI Yu-zhang LIU Sheng-dan YE ling-ying BAO Chong-jun School of Materials Science and Engineering Central South UniversityChangsha 410083China Key Laboratory of Lightweight and High-strength Structural Materials Changsha 410083China Key Laboratory of Non-ferrous Metals Science and Engineering(Ministry of Education) Changsha 410083China Kunming Metallurgical Research Institute Co. Ltd.Kunming 650031China

The evolution of mechanical properties,localized corrosion resistance of a high purity Al-Zn-Mg-Cu alloy during non-isothermal aging(NIA)was investigated by hardness test,electrical conductivity test,tensile test,intergranular corrosion test,exfoliation corrosion test,slow strain rate tensile test and electrochemical test,and the mechanism has been discussed based on microstructure examination by optical microscopy,electron back scattered diffraction,scanning electron microscopy and scanning transmission electron *** NIA treatment includes a heating stage from 40℃to 180℃with a rate of 20℃/h and a cooling stage from 180℃to 40℃with a rate of 10℃/*** results show that the hardness and strength increase rapidly during the heating stage of NIA since the increasing temperature favors the nucleation and the growth of strengthening precipitates and promotes the transformation of Guinier-Preston(GPI)zones toη'*** the cooling stage,the sizes ofη'phase increase with a little change in the number density,leading to a further slight increase of the hardness and *** NIA proceeds,the corroded morphology in the alloy changes from a layering feature to a wavy feature,the maximum corrosion depth decreases,and the reason has been analyzed based on the microstructural and microchemical feature of precipitates at grain boundaries and subgrain boundaries.

关键词： Al-Zn-Mg-Cu alloy non-isothermal aging mechanical properties localized corrosion resistance microstructure

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Modulating selective interaction of NiOOH with Mg ions for high-performance aqueous batteries

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eScience 2024年第5期4卷 160-169页

作者： Bing He ying ling Zhixun Wang Wenbin Gong Zhe Wang Yanting Liu Tianzhu Zhou Ting Xiong Shuai Wang Yonggang Wang Qingwen Li Qichong Zhang Lei Wei School of Electrical and Electronic Engineering Nanyang Technological University50 Nanyang Avenue 639798Singapore Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Department of Chemistry Fudan UniversityShanghai 200438China School of Physics and Energy Xuzhou University of TechnologyXuzhou 221018China

Aqueous Mg-ion batteries(AMIBs)featuring advantages of good safety,low cost,and high specific energy have been recognized as a promising energy-storage ***,the performance of AMIBs is consistently limited by sluggish diffusion kinetics and structural degradation of cathode materials arising from the strong electrostatic interactions between high-charge-density Mg2+and host ***,layered-structured NiOOH,as traditional cathodes for alkaline batteries,is initially demonstrated to realize proton-assisted Mg-(de)intercalation chemistry with a high discharge platform(0.57V)in neutral aqueous *** from the unique core/shell structure,the resulting NiOOH/CNT cathodes achieve a high capacity of 122.5 mAh g−1 and long cycle *** theoretical calculations reveal that the binding energy of hydrated Mg2+is higher than that of Mg2+with NiOOH,resulting in that Mg2+is easily intercalated/de-intercalated into/from *** from the freestanding design,the assembled fiber-shaped“rocking-chair”NaTi2(PO4)3//NiOOH AMIB shows a high energy density and satisfactory mechanical flexibility,which could be woven into a commercial fabric and power for fiber-shaped photoelectric sensors.

关键词： NiOOHAqueous electrolyte Mg-intercalation chemistry Rocking-chair Mg-ion batteries Fiber electronics

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Microstructural evolution and deformation mechanisms of superplastic aluminium alloys:A review

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Transactions of Nonferrous Metals Society of China 2024年第10期34卷 3069-3092页

作者： Guo-tong ZOU Shi-jie CHEN Ya-qi XU Bao-kun SHEN Yu-jia ZHANG ling-ying YE School of Materials Science and Engineering Central South UniversityChangsha 410083China Key Laboratory of Nonferrous Metal Materials Sciences and Engineering Ministry of EducationCentral South UniversityChangsha 410083China Nonferrous Metal Oriented Advanced Structural Materials and Manufacturing Cooperative Innovation Centre Central South UniversityChangsha 410083China

Aluminium alloy is one of the earliest and most widely used superplastic *** objective of this work is to review the scientific advances in superplastic Al ***,the emphasis is placed on the microstructural evolution and deformation mechanisms of Al alloys during superplastic *** evolution of grain structure,texture,secondary phase,and cavities during superplastic flow in typical superplastic Al alloys is discussed in *** quantitative evaluation of different deformation mechanisms based on the focus ion beam(FIB)-assisted surface study provides new insights into the superplasticity of Al *** main features,such as grain boundary sliding,intragranular dislocation slip,and diffusion creep can be observed intuitively and analyzed *** study provides some reference for the research of superplastic deformation mechanism and the development of superplastic Al alloys.

关键词： uminium alloys superplasticity superplastic deformation mechanism grain boundary sliding micro-structural evolution

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论弥尔顿对荷马史诗传统中女性之“他者”定位的改写——以《伊利亚特》和《失乐园》为例

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湘潭大学学报（哲学社会科学版） 2024年第1期48卷 142-149页

作者：吴玲英李蒙蒙中南大学外国语学院湖南长沙410083

荷马在其被视为“西方最古老的史诗”《伊利亚特》里将女性人物定位为“他者”,由此开启西方史诗对女性的“自我”之探索。在西方史诗史上,随着史诗从“原始史诗”向“文学史诗”发展,史诗里的女性形象慢慢脱离“他者”而向“自我”演... 详细信息

荷马在其被视为“西方最古老的史诗”《伊利亚特》里将女性人物定位为“他者”,由此开启西方史诗对女性的“自我”之探索。在西方史诗史上,随着史诗从“原始史诗”向“文学史诗”发展,史诗里的女性形象慢慢脱离“他者”而向“自我”演进。本文在分析“原始史诗”之代表《伊利亚特》中女性人物的基础上,进一步阐明:弥尔顿在“文学史诗之冠”《失乐园》中改写了荷马史诗传统中女性之“他者”定位。首先,《失乐园》的史诗英雄虽名为亚当夏娃之整体,但很大程度上乃史诗中唯一的女性夏娃之个体,弥尔顿在塑造史诗英雄的过程中将其主要关注锁定在夏娃身上。其次,诗人始终突显夏娃的“自我”,不仅展示了夏娃因“原初自我”中的“自恋”“自傲”而堕落的经过,而且呈现了夏娃通过“自省”“自知”“自赎”而将“自我”重构为“生态自我”并获得精神再生的过程。女性人物在史诗中的重新定位是弥尔顿对史诗传统的重要贡献之一。

关键词：弥尔顿《失乐园》荷马史诗传统《伊利亚特》女性定位 “他者” 改写 “自我”

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文化自信视角下高中地理、历史跨学科融合探索

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地理教学 2024年第13期 40-44页

作者：凌盈陈俊英福建师范大学地理科学学院、碳中和未来技术学院福建福州350117 福建教育学院福建福州350001

地理学科的跨学科融合是其综合性、实践性的体现,也是培育核心素养的重要途径。本文基于文化自信视角和新课标理念,以“马尾船政的‘前世今生来世’”为案例,融合地理、历史学科核心素养和知识内容设计教学活动,为文化自信渗透高中地理... 详细信息

地理学科的跨学科融合是其综合性、实践性的体现,也是培育核心素养的重要途径。本文基于文化自信视角和新课标理念,以“马尾船政的‘前世今生来世’”为案例,融合地理、历史学科核心素养和知识内容设计教学活动,为文化自信渗透高中地理课堂和跨学科融合教学提供参考。

关键词：文化自信跨学科融合马尾船政高中地理

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面向PyPI生态系统的漏洞影响范围细粒度评估方法

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软件学报 2024年第10期35卷 4493-4509页

作者：王梓博贾相堃应凌云苏璞睿中国科学院软件研究所北京100190 中国科学院大学北京100049 奇安信技术研究院北京100044

Python语言的开放性和易用性使其成为最常用的编程语言之一.其形成的PyPI生态系统在为开发者提供便利的同时,也成为攻击者进行漏洞攻击的重要目标.在发现Python漏洞之后,如何准确、全面地评估漏洞影响范围是应对Python漏洞的关键.然而... 详细信息

Python语言的开放性和易用性使其成为最常用的编程语言之一.其形成的PyPI生态系统在为开发者提供便利的同时,也成为攻击者进行漏洞攻击的重要目标.在发现Python漏洞之后,如何准确、全面地评估漏洞影响范围是应对Python漏洞的关键.然而当前的Python漏洞影响范围评估方法主要依靠包粒度的依赖关系分析,会产生大量误报;现有的函数粒度的Python程序分析方法由于上下文不敏感等导致存在准确性问题,应用于实际的漏洞影响范围评估也会产生误报.提出一种基于静态分析的面向PyPI生态系统的漏洞影响范围评估方法PyVul++.首先构建PyPI生态系统的索引,然后通过漏洞函数识别发现受漏洞影响的候选包,进一步通过漏洞触发条件验证漏洞包,实现函数粒度的漏洞影响范围评估.PyVul++改进了Python代码函数粒度的调用分析能力,在基于PyCG的测试集上的分析结果优于其他工具(精确率86.71%,召回率83.20%).通过PyVul++对10个Python CVE漏洞进行PyPI生态系统(385855个包)影响范围评估,相比于pip-audit等工具发现了更多漏洞包且降低了误报.此外,在10个Python CVE漏洞影响范围评估实验中,PyVul++新发现了目前PyPI生态系统中仍有11个包存在引用未修复的漏洞函数的安全问题.

关键词： PyPI生态系统漏洞影响范围函数粒度评估静态分析

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基于***探讨慢性胰腺炎治疗研究新进展

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世界华人消化杂志 2024年第9期32卷 635-644页

作者：姜凌莹韩超胡良皞海军军医大学基础医学院上海市200433 中国人民解放军91876部队医院河北省秦皇岛市066203 海军军医大学海军特色医学中心消化内科上海市200052 海军军医大学第一附属医院消化内科上海市200433

慢性胰腺炎(chronic pancreatitis,CP)是指各种病因引起的胰腺慢性进行性炎症性纤维化疾病,临床表现为反复发作的上腹部疼痛和胰腺外分泌功能不全.***是目前国际上应用最广泛的临床试验数据库,主要包含已完成的、正在开展的和即将进行... 详细信息

慢性胰腺炎(chronic pancreatitis,CP)是指各种病因引起的胰腺慢性进行性炎症性纤维化疾病,临床表现为反复发作的上腹部疼痛和胰腺外分泌功能不全.***是目前国际上应用最广泛的临床试验数据库,主要包含已完成的、正在开展的和即将进行的临床研究的信息.本文通过对***数据库中所有于2024-06-30前注册的临床研究进行检索,筛选出最新的CP相关的临床研究,从营养支持、药物、内镜等角度整理归纳CP临床研究的方向和热点,旨在为今后CP临床研究的设计拓展新思路.

关键词：慢性胰腺炎消化内镜疼痛临床试验 ClinicalTrials.gov

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