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Theoretical Exploration of Alloying Effects on Stabilities and Mechanical Properties ofγʹPhase in Novel Co–Al–Nb-Base Superalloys

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Acta Metallurgica Sinica(English Letters) 2024年第7期37卷 1238-1248页

作者： Guan-Cheng Gu zhao-Jing Han Ze-Yu Chen zhao-Xuan Li Sheng-Bao Xia Zheng-ning Li Hua Jin Wei-Wei Xu Xing-Jun Liu Shenzhen Research Institute of Xiamen University School of Aerospace EngineeringXiamen UniversityXiamen361005China Institute of Materials Genome and Big Data Harbin Institute of TechnologyShenzhen518055China

The new developedγ/γʹCo–Al–Nb-base alloys show great potentials as high-temperature ***,finding appropriate compositions to improve performance of alloys still poses a great challenge to the development of Co–Al–Nb-base *** by the lack of alloying effects on fundamental properties of criticalγʹphase,we systematically performed a theoretical investigation on the effect of alloying elements TM(TM:Ti,V,Cr,Zr,Mo,Ta,W,Re,and Ru)on phase stabilities and mechanical properties of L1_(2)-typeγʹ(Co,Ni)_(3)(Al,Nb).By analyzing the stability ofγʹphase with respect to its competitive B2 and D0_(19) phases,the results shown that Ti,V,and Cr enhance the L1_(2) stability and widen the L1_(2)–D0_(19) energy barrier,in which V yields the maximum *** analysis of electronic structure indicated that the alternation of valence electrons at fermi level would be the atomic origin for doping TM inγʹ*** calculated results of mechanical properties shown that V and Cr are expected to be optimal dopant for enhancing the strength and the ductility ofγʹ*** addition of Ta is also beneficial for enhancing the strength at the slight expense of ductility ofγʹ*** drawing the mechanical maps,the preferred composition range for the phases with desired properties is roughly demarcated in theory for the multi-addition of V/Cr and V/Ta inγʹ*** findings would be useful for optimizing the performance of novelγ/γʹCo–Al–Nb-base superalloys.

关键词： Co-Al-Nb-base superalloys γ/γʹdual-phase Phase stability Mechanical properties First-principle methods

An arch-shape wood evaporator decorated by metal-organic framework for solar interface evaporation

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Nano Research 2024年第7期17卷 6661-6672页

作者： Tiantian Wu Liming zhao Yaning Xu Ziwei Cui Lixing kang Yahui Cai Zupeng Chen Dan Tian Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Key Laboratory of Multifunctional Nanomaterials and Smart Systems Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China

To achieve sustainable desalination and water purification,solar interface evaporation technology is an effective means due to its high energy *** photothermal conversion materials and surface design are crucial for the interfacial solar evaporation *** to design water transport routes and thermal insulating layers simultaneously is one of the major challenges to solar interface evaporation technology ***,this work reports an arch-shaped wood evaporator(pine@carbon black(CB)-metal-organic framework-801(MOF-801)-36%)for efficient,fast and continuous interfacial solar evaporation,which is composed of an arch-shaped wood substrate,MOF-801,and CB as a light absorption *** archshaped structure has a double-sided evaporation effect,which has a synergistic effect on augmenting solar evaporation *** addition,the in-situ growth of MOF-801 in pretreated wood microchannels renders the wood evaporator a significant function of reducing the equivalent enthalpy of evaporation due to the reduction of the hydrogen bonding density of water molecules as they pass through the wood *** best evaporation rate of the arch-shaped wood evaporator can reach 2.535 kg·m^(−2)·h−1,and the efficiency reaches 93.7%under the irradiation of 1 sun ***,it could be used for desalination and wastewater treatment to collect fresh water that meets drinking requirements set by the World Health Organization(WHO).This integrated evaporator provides an efficient way for commercial portable photothermal conversion and new ideas for advanced solar-driven water treatment technology.

关键词： arch-shaped solar evaporation wood metal-organic frameworks(MOFs) double-sided evaporation

Rapid prediction of flow and concentration fields in solid-liquid suspensions of slurry electrolysis tanks

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International Journal of Minerals,Metallurgy and Materials 2024年第9期31卷 2006-2016页

作者： Tingting Lu kang Li Hongliang zhao Wei Wang Zhenhao Zhou Xiaoyi Cai Fengqin Liu State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Intelligent Optimized Manufacturing in Mining&Metallurgy Process Beijing 102628China School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China

Slurry electrolysis(SE),as a hydrometallurgical process,has the characteristic of a multitank series connection,which leads to various stirring conditions and a complex solid suspension *** computational fluid dynamics(CFD),which requires high computing resources,and a combination with machine learning was proposed to construct a rapid prediction model for the liquid flow and solid concentration fields in a SE *** scientific selection of calculation samples via orthogonal experiments,a comprehensive dataset covering a wide range of conditions was established while effectively reducing the number of simulations and providing reasonable weights for each ***,a prediction model of the SE tank was constructed using the K-nearest neighbor *** results show that with the increase in levels of orthogonal experiments,the prediction accuracy of the model improved *** model established with four factors and nine levels can accurately predict the flow and concentration fields,and the regression coefficients of average velocity and solid concentration were 0.926 and 0.937,*** with traditional CFD,the response time of field information prediction in this model was reduced from 75 h to 20 s,which solves the problem of serious lag in CFD applied alone to actual production and meets real-time production control requirements.

关键词： slurry electrolysis solid-liquid suspension computational fluid dynamics K-nearest neighbor algorithm rapid prediction

Discovery of GluN2A subtype-selective N-methyl-d-aspartate(NMDA)receptor ligands

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Acta Pharmaceutica Sinica B 2024年第5期14卷 1987-2005页

作者： Liyang Jiang Na Liu Fabao zhao Boshi Huang Dongwei kang Peng Zhan Xinyong Liu Department of Medicinal Chemistry Key Laboratory of Chemical Biology(Ministry of Education)School of Pharmaceutical SciencesCheeloo College of MedicineShandong UniversityJinan 250012China

The N-methyl-d-aspartate(NMDA)receptors,which belong to the ionotropic Glutamate receptors,constitute a family of ligand-gated ion *** the various subtypes of NMDA receptors,the GluN1/2A subtype plays a significant role in central nervous system(CNS)*** present article aims to provide a comprehensive review of ligands targeting GluN2A-containing NMDA receptors,encompassing negative allosteric modulators(NAMs),positive allosteric modulators(PAMs)and competitive ***,the ligands’structure–activity relationships(SARs)and the binding models of representative ligands are also discussed,providing valuable insights for the clinical rational design of effective drugs targeting CNS diseases.

关键词： NMDA receptors GluN2A subtype Subtype-selective ligands SARs Protein ligand interactions

Enhancing undulation of soft robots in granular media:A numerical and experimental study on the effect of anisotropic scales

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Biomimetic Intelligence & Robotics 2024年第2期4卷 63-70页

作者： Longchuan Li Chaoyue zhao Shuqian He Qiukai Qi Shuai kang Shugen Ma College of Information Science and Technology Bejing University of Chemical TechnologyBejing 100029China School of Engineering Mathematics and Technology University of BristolBristol BS81THUK College of Mechanical and Electrical Engineering Beijing University of Chemical TechnologyBeijing 100029China Thrust of Robotics and Autonomous Systems The Hong Kong University of Science and Technology(Guangzhou)Guangzhou 511453China

Generating efficient locomotion in granular media is important,although it is difficult for *** by the fact that sand vipers usually have saw-like scales,in this study,we design a soft undulation robot with tangential anisotropic friction to enhance the undulation performance of soft robots in granular media.A mathematical model was derived and numerical simulations were conducted accordingly to investigate the effectiveness of tangential friction anisotropy for undulation gait generation in granular *** particular,we introduce a pseudo-rigid-body dynamics model consisting of links and joints while simulating the pneumatic actuation method to more closely approximate the response of soft ***,a soft snake-like robot was fabricated,and its forward and reverse undulations were compared in two sets of controlled *** consistency between the experimental results and the numerical simulations confirms that tangential anisotropic friction induces a propulsive effect in undulation,thereby increasing the robot's locomotion *** discovery provides new insights into the design of undulation robots in granular environments.2024 The Author(s).Published by Elsevier *** behalf of Shandong *** is an open access articleunder the CCBY license(http://***/licenses/by/4.0/).

关键词： Granular media Anisotropicity Pseudo-rigid-body model Soft robot Undulation

Deformable Catalytic Material Derived from Mechanical Flexibility for Hydrogen Evolution Reaction

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Nano-Micro Letters 2024年第2期16卷 287-311页

作者： Fengshun Wang Lingbin Xie ning Sun Ting Zhi Mengyang Zhang Yang Liu Zhongzhong Luo Lanhua Yi Qiang zhao Longlu Wang College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology) Nanjing University of Posts&Telecommunications(NJUPT)9 WenyuanNanjing 210023People’s Republic of China Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education School of ChemistryXiangtan UniversityXiangtan 411105People’s Republic of China State Key Laboratory of Organic Electronics and Information Displays&Jiangsu Key Laboratory for Biosensors Institute of Advanced Materials(IAM)&Institute of Flexible Electronics(Future Technology)Nanjing University of Posts&Telecommunications9 WenyuanNanjing 210023People’s Republic of China

Deformable catalytic material with excellent flexible structure is a new type of catalyst that has been applied in various chemical reactions,especially electrocatalytic hydrogen evolution reaction(HER).In recent years,deformable catalysts for HER have made great progress and would become a research *** catalytic activities of deformable catalysts could be adjustable by the strain engineering and surface *** surface curvature of flexible catalytic materials is closely related to the electrocatalytic HER ***,firstly,we systematically summarized self-adaptive catalytic performance of deformable catalysts and various micro–nanostructures evolution in catalytic HER ***,a series of strategies to design highly active catalysts based on the mechanical flexibility of lowdimensional nanomaterials were *** but not least,we presented the challenges and prospects of the study of flexible and deformable micro–nanostructures of electrocatalysts,which would further deepen the understanding of catalytic mechanisms of deformable HER catalyst.

关键词： Deformable catalytic material Micro-nanostructures evolution Mechanical flexibility Hydrogen evolution reaction

Genetically Predicted Plasma Levels of Amino Acids and Endometriosis:A Mendelian Randomization Study

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Biomedical and Environmental Sciences 2024年第6期37卷 672-675页

作者： Juanmei Li Yao Ni ning Wang Yu Liao Yiwei Yu Wenliang Lyu Ruihua zhao Guang’anmen Hospital China Academy of Chinese Medical SciencesBeijing 100053China Department of Dermatovenereology Chengdu Second People’s HospitalChengdu 610021SichuanChina

Endometriosis(EMS)is one of the most common disorders among women of reproductive age and affects approximately 6%–10%of the world total population^([1]).Women with EMS often experience symptoms such as dysmenorrhea,infertility,or difficulties in *** studies focusing on amino acids(AAs)metabolism have shed light on the mechanisms underlying the development and progression of EMS^([2]).

关键词： metabolism infertility Plasma

Health risk assessment of heavy metal pollution in groundwater of a karst basin,SW China

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Journal of Groundwater Science and Engineering 2024年第1期12卷 49-61页

作者： Fu-ning Lan Yi zhao Jun Li Xiu-qun Zhu Karst Ecosystem National Observation and Research StationPingguo 531406GuangxiChina Institute of Karst Geology International Research Centre on KarstUnder the Auspices of UNESCOGuangxi Karst Resources and Environment Research Center of Engineering TechnologyChinese Academy of Geological SciencesKarst Dynamics LaboratoryMNR and GuangxiGuilin 541004China Hebei Key Laboratory of Water Quality Engineering and Comprehensive Utilization of Water Resources Hebei University of ArchitectureZhangjiakou 075000Hebei ProvinceChina College of Hydrology and Water Resources Hohai UniversityNanjing 210098China

To investigate the presence of metal elements and assess their health risk for the populace in the Nandong Underground River Basin(NURB),we conducted an analysis of eleven common heavy metals in the water body.A Health risk assessment(HRA)model was employed to analyze 84 water samples from the *** detection results revealed the following order of heavy metals concentrations:Fe>Al>Mn>Zn>As>Cd>Pb>Cr>Ni>Cu>*** analysis indicated a certain similarity in material source and migration transformation among these eleven metal *** study identified that the health risks for local residents exposed to metal elements in the water of NURB primarily stem from carcinogenic risk(10^(−6)–10^(−4)a^(−1))through the drinking water ***,the health risk of heavy metal exposure for children through drinking water was notably higher than for *** maximum health risks of Cr in both underground and surface water exceeded the recommendation standard(5.0×10^(−5)a^(−1))from ICRP,surpassing the values recommended by the Swedish Environmental Protection Agency,the Dutch Ministry of Construction and Environment and the British Royal Society(5.0×10^(−6)a^(−1)).The results of the health risk assessment indicate that Cr in the water of NURB is the primary source of carcinogenic risk for local residents,followed by Cd and ***,it is imperative to control these three carcinogenic metals when the water was used as drinking water resource.

关键词： Water Pollution Correlation Analysis Toxicity of Heavy Metal Elements Underground River Basin Carcinogenicity Potential

One stone two birds:electrochemical and colorimetric dual-mode biosensor based on copper peroxide/covalent organic framework nanocomposite for ultrasensentive norovirus detection

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Food Science and Human Wellness 2024年第2期13卷 920-931页

作者： Guobao ning Quanmei Duan Huan Liang Huifang Liu Min Zhou Chunlan Chen Chong Zhang Hui zhao Canpeng Li School of Chemical Science and Technology Yunnan UniversityKunming 650091China Laboratory for Conservation and Utilization of Bio-resource Yunnan UniversityKunming 650091China Kunming Customs Technology Center Kunming 650228China

Norovirus(NoV)is regarded as one of the most common causes of foodborne diarrhea in the *** is urgent to identify the pathogenic microorganism of the diarrhea in short *** this work,we developed an electrochemical and colorimetric dual-mode detection for NoV based on the excellent dual catalytic properties of copper peroxide/COF-NH_(2)nanocomposite(CuO_(2)@COF-NH_(2)).For the colorimetric detection,NoV can be directly detected by the naked eye based on CuO_(2)@COF-NH_(2)as a laccase-like nonazyme using“peptide-NoV-antibody”recognition *** colorimetric assay displayed a wide and quality linear detection range from 1 copy/mL to 5000 copies/mL of NoV with a low limit of detection(LOD)of 0.125 copy/*** the electrochemical detection of NoV,CuO_(2)@COF-NH_(2)showed an oxidation peak of copper ion from Cu^(+)to Cu^(2+)using“peptide-NoV-antibody”recognition *** electrochemical assay showed a linear detection range was 1-5000 copies/mL with a LOD of 0.152 copy/***'s worthy to note that this assay does not need other electrical signal molecule,which provide the stable and sensitive electrochemial detection for *** electrochemical and colorimetric dual-mode detection was used to detect NoV in foods and faceal samples,which has the potential for improving food safety and diagnosing of NoV-infected diarrhea.

关键词： Norovirus Specific peptides Electrochemical and colorimetric assay Dual-mode Copper peroxide/covalent organic framework