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Eutectic-derived synthesis of hierarchically nanoporous copper for electrochemical actuation and solar steam generation

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Nano Research 2024年第3期17卷 2011-2018页

作者： Qingguo Bai Yan Wang fuquan Tan Zhonghua Zhang Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJingshi Road 17923Jinan 250061China School of Applied Physics and Materials Wuyi UniversityDongcheng Village 22Jiangmen 529020China School of Materials Science and Engineering University of JinanWest Road of Nan Xinzhuang 336Jinan 250022China

The utilization of nanoporous copper(np-Cu)as a metallic actuator has gained attention in recent years due to its cost-effectiveness in comparison to other precious *** this,the enhancement of np-Cu’s actuation performance remains a challenge due to limitations in its strain amplitude and actuation ***,np-Cu has been deemed as a promising material for solar absorption due to its localized surface plasmon resonance ***,practical applications such as solar steam generators(SSGs)utilizing np-Cu have yet to be *** this study,we present the development of hierarchically nanoporous copper(HNC)through the dealloying of a eutectic Al-Cu *** hierarchical structure of the HNC features a combination of ordered flat channels and randomly distributed continuous nanopores,which work in synergy to improve actuation *** ordered flat channels,with a sub-micron scale,facilitate rapid mass transport of electrolyte ions,while the nano-sized continuous pores,due to their large specific surface area,enhance the induced *** results indicate that the HNC exhibits improved actuation performance,with a two times increase in both strain amplitude and rate in comparison to other reported ***,the HNC,for the first time,showcases excellent solar steam generation capabilities,with an evaporation rate of 1.47 kg·m^(-2)·h^(-1) and a photothermal conversion efficiency of 92%under a light intensity of 1 kW·m^(-2),which rivals that of nanoporous gold and silver *** enhanced actuation performance and newly discovered solar steam generation properties of the HNC are attributed to its hierarchically porous structure.

关键词： eutectic alloy dealloying hierarchically nanoporous copper(HNC) actuation solar steam generation

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Exploring the influences of education,intelligence and income on mental disorders

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General Psychiatry 2024年第1期37卷 64-72页

作者： Ancha Baranova Hongbao Cao fuquan Zhan George Mason University FairfaxVirginiaUSA Research Centre for Medical Genetics MoscowRussia Nanjing Medical University Affiliated Brain Hospital NanjingZhejiangChina

Background Previous studies have shown that educational attainment(EA),intelligence and income are key factors associated with mental ***,the direct effects of each factor on major mental disorders are *** We aimed to evaluate the overall and independent causal effects of the three psychosocial factors on common mental *** Using genome-wide association study summary datasets,we performed Mendelian randomisation(MR)and multivariable MR(MVMR)analyses to assess potential associations between the 3 factors(EA,N=766345;household income,N=392422;intelligence,N=146808)and 13 common mental disorders,with sample sizes ranging from 9907 to ***-variance weighting was employed as the main method in the MR *** Our MR analysis showed that(1)higher EA was a protective factor for eight mental disorders but contributed to anorexia nervosa,obsessive-compulsive disorder(OCD),bipolar disorder(BD)and autism spectrum disorder(ASD);(2)higher intelligence was a protective factor for five mental disorders but a risk factor for OCD and ASD;(3)higher household income protected against 10 mental disorders but confers risk for anorexia *** MVMR analysis showed that(1)higher EA was a direct protective factor for attention-deficit/hyperactivity disorder(ADHD)and insomnia but a direct risk factor for schizophrenia,BD and ASD;(2)higher intelligence was a direct protective factor for schizophrenia but a direct risk factor for major depressive disorder(MDD)and ASD;(3)higher income was a direct protective factor for seven mental disorders,including schizophrenia,BD,MDD,ASD,post-traumatic stress disorder,ADHD and anxiety *** Our study reveals that education,intelligence and income intertwine with each *** each factor,its independent effects on mental disorders present a more complex picture than its overall effects.

关键词： protective disorders income

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A complementary binary code based phase unwrapping method

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Optoelectronics Letters 2024年第4期20卷 228-233页

作者： LI Wenjie SUN Huanghe LI fuquan WANG Beibei WANG Haijian GAO Xinyu School of Mechanical and Electrical EngineeringGuilin University of Electronic Technology Guilin 541004China

Phase unwrapping is used to establish the mapping relationship between camera and projector,which is one of the key technologies in fringe projection profilometry(FPP)based three-dimensional(3D)*** complementary Gray code assisted phase unwrapping technology can get a good result on the periodic boundary,it needs more coded images to obtain a high frequency *** at this problem,a complementary binary code assisted phase unwrapping method is proposed in this *** to the periodic consistency between the wrapping phase and binary codes,the coded patterns are *** the connected domain strategy is performed to calculate the fringe orders using the positive and negative image *** avoid the mistake near the periodic boundary,complementary binary code inspired by the complementary Gray code is *** fringe order correction is also discussed for different situations in the first measured *** two binary images are needed in the proposed method,and the fringe frequency is not *** the simulation and experiment have verified the feasibility of proposed method.

关键词： method. complementary phase

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Exploring the potential for improving material utilization efficiency to secure lithium supply for China's battery supply chain

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Fundamental Research 2024年第1期4卷 167-177页

作者： Xin Sun Han Hao Yong Geng Zongwei Liu fuquan Zhao State Key Laboratory of Automotive Safety and Energy Tsinghua UniversityBeijing 100084China Belfer Center for Science and International Affairs Harvard UniversityCambridgeMA 02138United States Tsinghua-Rio Tinto Joint Research Center for Resources Energy and Sustainable Development Tsinghua UniversityBeijing 100084China School of International and Public Affairs Shanghai Jiao Tong UniversityShanghai 200240China

Lithium-ion battery(LIB)is the key technology for climate change *** sustainability of LIB supply chain has caused widespread concern since the material utilization efficiency of LIB supply chain has not been well *** study aims to fill this research gap by conducting a dynamic material flow analysis of lithium in China from 2015 to *** indicate that within the temporal boundary,lithium flow and in-use stock grew significantly in China due to the rapid development of the EV market,with lithium flow in domestic production of basic chemicals increasing by 614%to 100 kt,end-use consumption increasing by 160%to 35 kt,and in-use stock increasing by 62%to 195 *** has been a net importer of lithium,of which cumulative imports and exports were 343 kt and 169 kt,*** addition,103 kt of lithium was converted to inventories or was lost during the processing from 2015 to *** optimizing inventory and processing,developing substitutes for lithium for non-battery applications,and improving lithium recycling,China's net import dependency of lithium could be reduced from 27%-86%to 0%-16%.Our study demonstrates that it is urgent to improve material utilization efficiency so that the lithium resource supply can be secured.

关键词： Lithium Lithium-ion battery Critical material Supply chain Material flow analysis

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Surface reconstruction and structural transformation of twodimensional Ni-Fe MOFs for oxygen evolution in seawater media

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Nano Research 2024年第4期17卷 2429-2437页

作者： Liyuan Xiao Xue Bai Jingyi Han Tianmi Tang Siyu Chen Hui Qi Changmin Hou fuquan Bai Zhenlu Wang Jingqi Guan Institute of Physical Chemistry College of ChemistryJilin UniversityChangchun 130021China The Second Hospital of Jilin University Changchun 130021China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Laboratory of Theoretical and Computational Chemistry Institute of Theoretical ChemistryCollege of ChemistryChangchun 130023China

As a four-electron transfer reaction,oxygen evolution reaction(OER)is limited by large overpotential and slow ***,we in-situ synthesized two-dimensional(2D)Ni-Fe metal-organic framework nanosheets on nickel foam(NixFe-TPA/NF,TPA=terephthalic acid)for oxygen evolution in alkaline and alkaline seawater *** 1 M KOH,Ni3Fe-TPA/NF shows a low overpotential(η10)of 189 mV at 10 mA·cm^(-2) and an ultra-low overpotential of only 260 mV at 500 mA·cm^(-2).In alkaline seawater,Ni3Fe-TPA/NF still provides impressive OER performance,with anη10 of 265 ***-situ Raman characterization results show that the phase transition occurs during the OER,and Ni3FeOOH with more oxygen vacancies is in-situ formed,reducing the OER energy *** functional theory(DFT)reveals that the synergy between Ni and Fe reduces the energy barrier and accelerates the rate-determining *** addition,the ultra-thin 2D sheet structure and the close combination of Ni3FeOOH and highly conductive NF support ensure the high catalytic OER ***,the surface reconstruction and structural modification strategy can be used to design and prepare high-performance OER electrocatalysts for energy-related applications.

关键词： density functional theory(DFT)calculation Ni3FeOOH oxygen evolution reaction seawater electrolysis surface reconstruction

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General anesthetic agents induce neurotoxicity through astrocytes

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Neural Regeneration Research 2024年第6期19卷 1299-1307页

作者： Yanchang Yang Tiantian Liu Jun Li Dandan Yan Yuhan Hu Pin Wu fuquan Fang Patrick M.McQuillan Wenxin Hang Jianhang Leng Zhiyong Hu Department of Anesthesiology The First Affiliated HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina Department of Anesthesiology Ningbo Women and Children’s HospitalNingboZhejiang ProvinceChina Department of Anesthesiology Shulan(Hangzhou)Hospital Affiliated to Zhejiang Shuren University Shulan International Medical CollegeHangzhouZhejiang ProvinceChina Cell Biology Department Yale UniversityNew HavenCTUSA Department of Anesthesiology Penn State Hershey Medical CentrePenn State College of MedicineHersheyPAUSA Department of Central Laboratory Affiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhouZhejiang ProvinceChina

Neuroscientists have recognized the importance of astrocytes in regulating neurological function and their influence on the release of glial *** studies,however,have focused on the effects of general anesthetic agents on neuroglia or *** can also be an important target of general anesthetic agents as they exert not only sedative,analgesic,and amnesic effects but also mediate general anesthetic-induced neurotoxicity and postoperative cognitive ***,we analyzed recent advances in understanding the mechanism of general anesthetic agents on astrocytes,and found that exposure to general anesthetic agents will destroy the morphology and proliferation of astrocytes,in addition to acting on the receptors on their surface,which not only affect Ca^(2+)signaling,inhibit the release of brain-derived neurotrophic factor and lactate from astrocytes,but are even involved in the regulation of the pro-and anti-inflammatory processes of *** would obviously affect the communication between astrocytes as well as between astrocytes and neighboring neurons,other neuroglia,and vascular *** this review,we summarize how general anesthetic agents act on neurons via astrocytes,and explore potential mechanisms of action of general anesthetic agents on the nervous *** hope that this review will provide a new direction for mitigating the neurotoxicity of general anesthetic agents.

关键词： astrocytes brain-derived neurotrophic factor general anesthetic agents neuron neurotoxicity N-methyl-D-aspartate receptor perioperative neurocognition Toll-like receptor γ-aminobutyric acid receptor

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石油沥青/聚丙烯腈静电纺碳纳米纤维的制备工艺优化及其性能

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纺织学报 2024年第8期45卷 107-115页

作者：王永政黄林涛宋付权浙江海洋大学石油化工与环境学院浙江舟山316022 宁波杉杉硅基材料有限公司浙江宁波315100 常州大学石油与天然气工程学院江苏常州213000

为实现石油沥青的高值化利用,通过静电纺丝技术制备了沥青/聚丙烯腈复合纳米纤维,并经过预氧化和炭化处理制备了复合碳纳米纤维。采用Box-Behnken响应面法研究了纺丝参数对纤维直径的影响,通过调整石油沥青比例和热处理温度研究了预氧... 详细信息

为实现石油沥青的高值化利用,通过静电纺丝技术制备了沥青/聚丙烯腈复合纳米纤维,并经过预氧化和炭化处理制备了复合碳纳米纤维。采用Box-Behnken响应面法研究了纺丝参数对纤维直径的影响,通过调整石油沥青比例和热处理温度研究了预氧化和炭化过程中纤维的结构转变。结果表明:影响纤维直径的静电纺丝参数主次顺序依次为推流速度、纺丝电压和接收距离;响应面法模型预测值与最佳工艺条件下纤维直径实测值的相对误差为9.13%;当预氧化温度为250℃时,预氧化丝具有最大芳构化指数,其相应预氧化度最高;炭化温度与复合碳纳米纤维的石墨化程度呈正相关,随着炭化温度的升高,纤维直径大幅减小,复合碳纳米纤维石墨结构有序性逐渐增加。

关键词：石油沥青聚丙烯腈静电纺丝碳纳米纤维 Box-Behnken响应面法

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和厚朴酚的生物学功能及其饲用化前景的研究

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动物营养学报 2024年第4期36卷 2163-2174页

作者：杨康余苗尹福泉马现永广东海洋大学滨海农业学院湛江524088 广东省农业科学院动物科学研究所农业农村部华南动物营养与饲料重点实验室猪禽种业全国重点实验室广东省畜禽育种与营养研究重点实验室广东省畜禽肉品质量安全控制与评定工程技术研究中心广州510640

和厚朴酚是一种天然的中药提取物,具有抗菌、抗肿瘤、抗应激和抗炎等生物学功能,是中药厚朴发挥药理作用的主要成分。在动物生产中的应用表明其具有改善生产性能、增强免疫力和抗镉中毒等作用。因此,和厚朴酚作为一种新型的饲粮添加剂,... 详细信息

和厚朴酚是一种天然的中药提取物,具有抗菌、抗肿瘤、抗应激和抗炎等生物学功能,是中药厚朴发挥药理作用的主要成分。在动物生产中的应用表明其具有改善生产性能、增强免疫力和抗镉中毒等作用。因此,和厚朴酚作为一种新型的饲粮添加剂,具有广泛的应用前景。本文综述了和厚朴酚在机体内的吸收与代谢、生物学功能及其在畜禽生产中的应用,旨在为和厚朴酚在畜禽生产中的高效应用提供参考。

关键词：和厚朴酚生物学功能吸收与代谢作用机理

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英国新型电力系统频率管理及对中国电网建设的启示

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全球能源互联网 2024年第3期7卷 312-324页

作者：李云陈图南黄福全深圳供电局有限公司广东省深圳市518048

英国是世界上新能源发电接入率最高的国家之一,新型电力系统的特点在英国已经较为明显。英国总调在频率管理方面的成果和经验对中国新型电力系统建设有很高的借鉴价值。首先研究分析了英国总调在新型电力系统建设中,在频率管理方面遇到... 详细信息

英国是世界上新能源发电接入率最高的国家之一,新型电力系统的特点在英国已经较为明显。英国总调在频率管理方面的成果和经验对中国新型电力系统建设有很高的借鉴价值。首先研究分析了英国总调在新型电力系统建设中,在频率管理方面遇到的风险及其产生机理。然后研究分析了英国总调应对风险的方案和实践经验。最后,研究分析了英国总调在频率管理方面的方案和实践经验对中国新型电力系统建设中频率管理的启示。参照英国的频率管理体系和辅助服务市场建设路径,中国应当重点关注频率管理体系的完善、系统惯量需求的研究和频率支撑技术的研发及应用。此外,应提前布局相关标准,避免分布式电源大面积脱网的风险。

关键词：新型电力系统频率稳定系统惯量频率控制

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高强混凝土无腹筋梁不同破坏形态受剪性能试验研究

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建筑结构学报 2024年第6期45卷 62-73页

作者：耿相日黄小坤徐福泉刘璐中国建筑科学研究院有限公司北京100013 中建研科技股份有限公司北京100013

为研究不同剪切破坏形态高强混凝土无腹筋梁的受剪性能,以剪跨比和截面有效高度为主要参数,开展了9根混凝土强度等级为C90的高强混凝土无腹筋梁试件在集中荷载作用下的受剪性能试验,分析了试件的剪切破坏形态、剪切性能状态以及对应的... 详细信息

为研究不同剪切破坏形态高强混凝土无腹筋梁的受剪性能,以剪跨比和截面有效高度为主要参数,开展了9根混凝土强度等级为C90的高强混凝土无腹筋梁试件在集中荷载作用下的受剪性能试验,分析了试件的剪切破坏形态、剪切性能状态以及对应的名义剪切强度。根据试验现象和试件受力特点,发现斜拉破坏试件以主斜裂缝的出现为主要破坏标志,剪压和斜压破坏试件以受压区混凝土的压碎为主要破坏标志。对名义剪切强度的分析表明:名义剪切开裂强度受剪跨比和截面有效高度的共同影响,而名义剪切破坏强度则主要受剪跨比影响;名义剪切开裂强度和名义剪切破坏强度可分别采用混凝土的抗拉强度和抗压强度进行表征。通过对国内外相关规范中的受剪承载力计算公式进行适用性分析,建议在确定高强混凝土无腹筋梁的受剪承载力时应以剪切开裂作为控制状态,同时应考虑构件尺寸效应的影响以提高计算的准确性。

关键词：高强混凝土无腹筋梁受剪性能剪切开裂状态剪切破坏状态名义剪切强度

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