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Co-production of hydrogen, oxygen, and electricity via an integrated solar-driven system with decoupled water electrolyzer and Na-Zn ion battery

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Journal of energy Chemistry 2025年第1期100卷 621-627页

作者： fei Lv Longjie Liu Jiazhe Wu Pengfei Wang Lixia Pan Dengwei Jing Yubin Chen International Research Center for Renewable energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University

Combining water electrolysis and rechargeable battery technologies into a single system holds great promise for the co-production of hydrogen （H2） and ***,the design and development of such systems is still in its ***,an integrated hydrogen-oxygen （O2）-electricity co-production system featuring a bipolar membrane-assisted decoupled electrolyzer and a Na-Zn ion battery was established with sodium nickelhexacyanoferrate （NaNiHCF） and Zn2+/Zn as dual redox *** decoupled electrolyzer enables to produce H2and O2in different time and space with almost 100%Faradaic efficiency at 100 mA ***,the charged NaNiHCF and Zn electrodes after the electrolysis processes formed a Na-Zn ion battery,which can generate electricity with an average cell voltage of 1.75 V at 10 m A *** connecting Si photovoltaics with the modular electrochemical device,a well-matched solar driven system was built to convert the intermittent solar energy into hydrogen and electric energy with a solar to hydrogen-electricity efficiency of 16.7%,demonstrating the flexible storage and conversion of renewables.

关键词： Hydrogen electricity Decoupled water electrolyzer Na-Zn ion battery Solar energy

Robust interface and ex.ellent as-built mechanical properties of Ti–6Al–4V fabricated through laser-aided additive manufacturing with powder and wire

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 154-168页

作者： fei Weng Guijun Bi Youxiang Chew Shang Sui Chaolin Tan Zhenglin Du Jinlong Su Fern Lan Ng Key Laboratory for Liquid-Solid Structural evolution and Processing of Materials Ministry of EducationShandong Engineering&Technology Research Center for Superhard MaterialSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Institute of Intelligent Manufacturing Guangdong Academy of SciencesGuangzhou 510095China Singapore Institute of Manufacturing Technology 5 Cleantech Loop636732Singapore

The feasibility of manufacturing Ti-6Al-4V samples through a combination of laser-aided additive manufacturing with powder(LAAM_(p))and wire(LAAM_(w))was explored.A process study was first conducted to successfully circumvent defects in Ti-6Al-4V deposits for LAAM_(p) and LAAM_(w),*** the optimized process parameters,robust interfaces were achieved between powder/wire deposits and the forged substrate,as well as between powder and wire *** characterization results revealed the epitaxial prior β grains in the deposited Ti-6Al-4V,wherein the powder deposit was dominated by a finerα′microstructure and the wire deposit was characterized by lamellar α *** mechanisms of microstructure formation and correlation with mechanical behavior were analyzed and *** mechanical properties of the interfacial samples can meet the requirements of the relevant Aerospace Material Specifications(AMS 6932)even without post heat *** fracture occurred within the interfacial area,further suggesting the robust *** findings of this study highlighted the feasibility of combining LAAM_(p) and LAAM_(w) in the direct manufacturing of Ti-6Al-4V parts in accordance with the required dimensional resolution and deposition rate,together with sound strength and ductility balance in the as-built condition.

关键词： laser-aided additive manufacturing powder deposition wire deposition interfacial characteristic mechanical behavior

Industrial solid wastes to environmental protection materials for removal of gaseous pollutants:A review

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Green energy & environment 2025年第1期10卷 34-83页

作者： Jiacheng Bao xin Sun Ping Ning Kai Li Jie Yang fei Wang Lei Shi Maohong Fan Faculty of environmental Science and engineering Kunming University of Science and TechnologyKunming650500China College of engineering and Physical Sciences and School of Energy ResourcesUniversity of WyomingLaramieWY82071USA College of engineering Georgia Institute of TechnologyAtlantaGA30332USA

The application of industrial solid wastes as environmentally functional materials for air pollutants control has gained much attention in recent years due to its potential to reduce air pollution in a cost-effective *** this review,we investigate the development of industrialwaste-based functional materials for various gas pollutant removal and consider the relevant reaction mechanism according to different types of industrial solid *** see a recent effort towards achieving high-performance environmental functional materials via chemical or physical modification,in which the active components,pore size,and phase structure can be *** review will discuss the potential of using industrial solid wastes,these modified materials,or synthesized materials from raw waste precursors for the removal of air pollutants,including SO_(2),NO_(x),Hg^(0),H_(2)S,VOCs,and CO_(2).The challenges still need to be addressed to realize this potential and the prospects for future research *** suggestions for future directions include determining the optimal composition of these materials,calculating the real reaction rate and turnover frequency,developing effective treatment methods,and establishing chemical component databases of raw industrial solid waste for catalysts/adsorbent preparation.

关键词： Industrial solid waste Reaction mechanism Modification method Air pollutants

Generating a dynamical M2 brane from super-gravitons in a pp-wave background

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Communications in Theoretical Physics 2022年第1期74卷 16-24页

作者： Yi-fei Chen J x Lu Nan Zhang Interdisciplinary Center for Theoretical Study University of Science and Technology of ChinaHefeiAnhui 230026China Peng Huanwu Center for Fundamental Theory HefeiAnhui 230026China

We present a detailed study of dynamically generating an M2 brane from super-gravitons(or DO branes)in a pp-wave background possessing maximal spacetime *** have three kinds of dynamical solutions depending on the ex.ess energy which appears as an order parameter signalling a critical phenomenon about the *** the ex.ess energy is below a critical value,we have two branches of the solution,one can have its size zero while the other cannot for each given ex.ess *** there can be an instanton tunnelling between the *** the ex.ess energy is above the critical value,we have a single solution whose dynamical behavior is basically independent of the background chosen and whose size can be zero at some instant.A by product of this study is that the size of particles or ex.ended objects can grow once there is a non-zero ex.ess energy even without the presence of a background flux,therefore lending support to the spacetime uncertainty principle.

关键词： M2 brane super-gravitons pp-wave background spacetime uncertainty principle

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong Jing-Jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting Wang xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He fei Ding Hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Positive effect of Mo on mechanical properties of a Ni-42W-10Co-x Mo medium heavy alloy

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China Foundry 2025年

作者： Guo-xin Cao Jian-xin Dong Yong-sheng He He Jiang Fang Hao Zhi-hua Nie Teng-fei Ma Bao-quan Fu School of Materials Science and engineering University of Science and Technology Beijing xi'an Superalloy Technology Co. Ltd. School of Materials Science and engineering Beijing Institute of Technology Key Laboratory of Air-driven equipment Technology of Zhejiang Province Quzhou University

In this study,a novel Ni-W-Co-Mo medium heavy alloy (MHA) was designed to improve its mechanical strength via Mo *** the Ni-42W-10Co-xM o alloy series,where x represents the weight percent of Mo and varies between 0,1,2,5,and 10,the microstructure transitions from a dendritic structure to a hypoeutectic structure as the Mo content increases from 0 to 5wt.%.Moreover,as the Mo content increases from 0to 10wt.%,the distribution of theμ-phase shifts from being individually dispersed to forming aggregates,and its volume fraction rises from 0.5%to 7.9%.Notably,theμ-phase evolves into an eutectic microstructure,which helps in minimizing the segregation of *** change is accompanied by a substantial enhancement in mechanical properties;specifically,the compressive yield strength at room temperature increases from 350 MPa to 646 MPa,indicating a significant 85%***,the microhardness increases from 230 HV to 304 *** dynamics simulations further reveal that the strengthening mechanism of Ni-42W-10Co-xM o alloys is Mo-induced solid solution strengthening and precipitation strengthening.

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Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第1期68卷 288-296页

作者： Shuai Liu Wen-Qiang xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang Hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-fei xu Ying Zeng Yun-Dong Wu xiao-Jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology ex.erimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide e as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

关键词： metabolon Diels-Alder reaction semipinacol rearrangement biosynthesis notoamides spiro polycyclic alkaloids

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耐心资本对企业eSG表现的影响研究

经济问题 2025年第1期 48-56页

作者：李思飞温磊北京外国语大学国际商学院北京100089

随着eSG理念的逐渐流行,如何提升企业的eSG表现成为社会公众关注的焦点。耐心资本提倡长期的投资理念,与eSG理念相契合,可能成为促进企业eSG表现提升的重要引擎。为此,基于2009—2022年A股上市公司的样本,实证检验了耐心资本对企业eSG... 详细信息

随着eSG理念的逐渐流行,如何提升企业的eSG表现成为社会公众关注的焦点。耐心资本提倡长期的投资理念,与eSG理念相契合,可能成为促进企业eSG表现提升的重要引擎。为此,基于2009—2022年A股上市公司的样本,实证检验了耐心资本对企业eSG表现的影响。研究发现:耐心资本能够促进企业eSG表现提升。机制检验发现,代理成本、融资约束和信息不对称是耐心资本影响企业eSG表现的重要机制;异质性分析发现,耐心资本对分析师关注度高、媒体关注度高以及属于重点污染监控单位的企业eSG表现具有更明显的提升效应;分项检验发现,耐心资本主要促进了企业社会和公司治理表现提升,对于企业环境表现则没有显著影响。研究结论对于培育和壮大耐心资本、促进企业eSG表现提升具有重要的参考价值。

关键词：耐心资本企业eSG表现信息不对称融资约束代理成本

Revealing the effect of inverse dislocation pileups on the mechanicalproperties of multi-principal element alloys

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Journal of Materials Science & Technology 2024年第23期190卷 155-171页

作者： fei Shuang Jian x.e Katerina e.Aifantis Department of Mechanical and Aerospace engineering University of FloridaGainesvilleFL32611USA State Key Laboratory of Nonlinear Mechanics(LNM) Institute of MechanicsChinese Academy of SciencesBeijing 100190China

In this work, we utilize atomistic simulations and dislocation mechanics to explore the formation of in-verse pileups in CrCoNi model alloys and elucidate their unique impact on the strength and ductilityof multi-principal element alloys (MPeAs). The present atomistic simulations on single crystals revealthat during the deformation of CrCoNi, stress gradients lead to the formation of novel inverse disloca-tion pileup. We find that this unique dislocation pattern in a confined volume is due to the elevatedlattice friction and significant stress gradient present in the material. Furthermore, this phenomenon canbe notably promoted by lowering the temperature, increasing the loading rate, and introducing chemicalshort-range ordering. Additional simulations on bicrystals show that these inverse pileups play a criticalrole in suppressing dislocation transmission, reflection, and grain boundary (GB) migration. As a result,they effectively mitigate stress concentration and reduce damage accumulation at GBs, lowering the riskof catastrophic failure due to GB damages. In our theoretical analysis, we utilize dislocation mechanics topredict the formation of the inverse pileup and its subsequent strengthening effect, considering scenarioswith and without obstacles. Our investigations encompass various lattice frictions and stress ***, our results shed light on the prevailing impact of dislocation hardening in the plastic de-formation of CrCoNi even under the presence of a linear stress gradient, while the contribution of GBstrengthening is found to be comparatively limited. These findings provide valuable insights into the de-formation mechanisms of MPeAs in general and significantly aid their applications as promising structuralmaterials.

关键词： Multi-principal element alloys CrCoNi Inverse dislocation pileup Strength Ductility Stress gradient