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Tuning the interfacial reaction environment via pH-dependent and induced ions to understand C–N bonds coupling performance in NO3- integrated CO2 reduction to carbon and nitrogen compounds over dual Cu-based N-doped carbon catalyst

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Journal of Energy Chemistry 2025年第1期100卷 273-285页

作者： Tianhang zhou Chen Shen Zhenghao Wu Xingying lan Yi Xiao College of Carbon Neutrality Future Technology State Key Laboratory of Heavy Oil Processing China University of Petroleum (Beijing) Institute of Materials Science TU Darmstadt Department of Chemistry Xi'an Jiaotong-Liverpool University Department of Mechanical and Mechatronics Engineering and Waterloo Institute of Nanotechnology University of Waterloo Waterloo

Dual atomic catalysts （DAC）,particularly copper （Cu2）-based nitrogen （N） doped graphene,show great potential to effectively convert CO2and nitrate （NO3-） into important industrial chemicals such as ethylene,glycol,acetamide,and urea through an efficient catalytical process that involves C–C and C–N ***,the origin of the coupling activity remained unclear,which substantially hinders the rational design of Cu-based catalysts for the N-integrated CO2reduction reaction （CO2RR）.To address this challenge,this work performed advanced density functional theory calculations incorporating explicit solvation based on a Cu2-based N-doped carbon (Cu2N6C10) catalyst for *** calculations are aimed to gain insight into the reaction mechanisms for the synthesis of ethylene,acetamide,and urea via coupling in the interfacial reaction *** to the sluggishness of CO2,the formation of a solvation electric layer by anions （F-,Cl-,Br-,and I-） and cations (Na+,Mg2+,K+,and Ca2+) leads to electron transfer towards the Cu *** process significantly accelerates the reduction of *** results reveal that*CO intermediates play a pivotal role in N-integrated ***,the Cu2-based N-doped carbon catalyst examined in this study has demonstrated the most potential for C–N coupling to *** findings reveal that through the process of a condensation reaction between*CO and NH2OH for urea synthesis,*NO3-is reduced to*NH3,and*CO2to*CCO at dual Cu atom *** dual-site reduction facilitates the synthesis of acetamide through a nucleophilic reaction between NH3and the ketene ***,we found that the I-and Mg2+ions,influenced by pH,were highly effective for acetamide and ammonia synthesis,except when F-and Ca2+were ***,the mechanisms of C–N bond formation were investigated via ab-initio molecular dynamics simulations,and we found that adjusting the micro-environment can change the dominant side reaction,shift

关键词： Condensation reactions

Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang Guo Di lan Zirui Jia Zhenguo Gao Xuetao Shi Mukun He hua Guo Guanglei Wu Pengfei Yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi Key Laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection

High-dimensional large-scale mixed-type data imputation under missing at random

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Science China Mathematics 2025年

作者： Wei Liu Guizhen Li Ling zhou lan Luo School of Mathematics Sichuan University Center of Statistical Research and School of Statistics Southwestern University of Finance and Economics Department of Statistics and Actuarial Science University of Iowa

Missingness in mixed-type variables is commonly encountered in a variety of areas. The requirement of complete observations necessities data imputation when a moderate or large proportion of data is ***, inappropriate imputation would downgrade the performance of machine learning algorithms, leading to bad predictions and unreliable statistical inference. For high-dimensional large-scale mixed-type missing data, we develop a computationally efficient imputation method, missing value imputation via generalized factor models（MIG）, under missing at random. The proposed MIG method allows missing variables to be of different types,including continuous, binary, and count variables, and are scalable to both data size n and variable dimension p while existing imputation methods rely on restrictive assumptions such as the same type of missing variables,the low dimensionality of variables, and a limited sample size. We explicitly show that the imputation error of the proposed MIG method diminishes to zero with the rate Op(max{n-1/2, p-1/2}) as both n and p tend to infinity. Five real datasets demonstrate the superior empirical performance of the proposed MIG method over existing methods that the average normalized absolute imputation error is reduced by 5.3%–34.1%.

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Small extracellular vesicles derived from human induced pluripotent stem cell-differentiated neural progenitor cells mitigate retinal ganglion cell degeneration in a mouse model of optic nerve injury

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Neural Regeneration Research 2025年第2期20卷 587-597页

作者： Tong Li Hui-Min Xing Hai-Dong Qian Qiao Gao Sheng-lan Xu hua Ma Zai-Long Chi State Key Laboratory of Ophthalmology Optometry and Visual ScienceEye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina National Clinical Research Center for Ocular Diseases Eye HospitalWenzhou Medical UniversityWenzhouZhejiang ProvinceChina

Several studies have found that transplantation of neural progenitor cells(NPCs)promotes the survival of injured ***,a poor integration rate and high risk of tumorigenicity after cell transplantation limits their clinical *** extracellular vesicles(sEVs)contain bioactive molecules for neuronal protection and *** studies have shown that stem/progenitor cell-derived sEVs can promote neuronal survival and recovery of neurological function in neurodegenerative eye diseases and other eye *** this study,we intravitreally transplanted sEVs derived from human induced pluripotent stem cells(hiPSCs)and hiPSCs-differentiated NPCs(hiPSC-NPC)in a mouse model of optic nerve *** results show that these intravitreally injected sEVs were ingested by retinal cells,especially those localized in the ganglion cell *** with hiPSC-NPC-derived sEVs mitigated optic nerve crush-induced retinal ganglion cell degeneration,and regulated the retinal microenvironment by inhibiting excessive activation of *** analysis further revealed that hiPSC-NPC derived sEVs transported neuroprotective and anti-inflammatory miRNA cargos to target cells,which had protective effects on RGCs after optic nerve *** findings suggest that sEVs derived from hiPSC-NPC are a promising cell-free therapeutic strategy for optic neuropathy.

关键词： exosome miRNA neural progenitor cell neurodegeneration neuroinflammation neuroprotection optic nerve crush optic neuropathy retinal ganglion cell small extracellular vesicles

Dispatchable Capability of Aggregated Electric Vehicle Charging in Distribution Systems

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Energy Engineering 2025年第1期122卷 129-152页

作者： ShiqianWang Bo Liu Yuanpeng hua Qiuyan Li Binhua Tang Jianshu zhou Yue Xiang Economic and Technology Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China College of Electrical Engineering Sichuan UniversityChengdu610065China

This paper introduces a method for modeling the entire aggregated electric vehicle(EV)charging process and analyzing its dispatchable *** methodology involves developing a model for aggregated EV charging at the charging station level,estimating its physical dispatchable capability,determining its economic dispatchable capability under economic incentives,modeling its participation in the grid,and investigating the effects of different scenarios and EV penetration on the aggregated load dispatch and dispatchable *** results indicate that using economic dispatchable capability reduces charging prices by 9.7%compared to physical dispatchable capability and 9.3%compared to disorderly ***,the peak-to-valley difference is reduced by 64.6%when applying economic dispatchable capability with 20%EV penetration and residential base load,compared to disorderly charging.

关键词： Aggregated charging dispatchable capability peak shaving and valley filling the economics of charging demand response

贺兰山东麓产区非酿酒酵母筛选及发酵特性研究

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食品与发酵工业 2025年第1期51卷 72-80,I0001-I0007页

作者：周迪卢玲王岚宁夏大学食品科学与工程学院宁夏银川750021 宁夏大学葡萄酒与园艺学院宁夏银川750021 葡萄与葡萄酒教育部工程研究中心宁夏银川750021

该研究对112株宁夏本土非酿酒酵母进行高糖、乙醇、pH、SO_(2)耐受性筛选及生长曲线的测定,筛选出耐受性强的本土非酿酒酵母进行赤霞珠葡萄酒发酵试验,通过理化指标测定、感官评价和挥发性物质测定,研究菌株发酵特性。结果表明,筛选出的... 详细信息

该研究对112株宁夏本土非酿酒酵母进行高糖、乙醇、pH、SO_(2)耐受性筛选及生长曲线的测定,筛选出耐受性强的本土非酿酒酵母进行赤霞珠葡萄酒发酵试验,通过理化指标测定、感官评价和挥发性物质测定,研究菌株发酵特性。结果表明,筛选出的4株本土非酿酒酵母YC-A13、YC-B10、YC-C13、YQY-B12均可耐受葡萄糖质量浓度450 g/L、乙醇含量13%、pH 1.0、SO_(2)质量浓度250 mg/L,优于商业酿酒酵母F33、CECA、XR。与商业酿酒酵母发酵酒样相比,4株本土非酿酒酵母发酵酒样产生了独有的香气物质癸酸乙酯、2-糠酸乙酯,质量浓度分别在17.63~19.85μg/L、4.04~20.42μg/L,癸酸甲酯的OAV>1可作为葡萄酒的主要香气成分;YC-B10、YC-C13、YQY-B12发酵酒样中产生了具有草本香、蔷薇花香的香茅醇,质量浓度在5.82~8.43μg/L。非酿酒酵母菌株发酵酒样之间产生的香气物质也存在明显差异,葡萄汁有孢汉逊酵母YC-B10和YQY-B12发酵酒样中产生了该种属独有的香气物质己酸丁酯,质量浓度分别为69.31和69.06μg/L,还分别产生了具有奶酪香气的己酸(质量浓度为536.25μg/L)和具有杏仁、菠萝香气的丙酸异戊酯(质量浓度为1.71μg/L)。美极梅奇酵母YC-A13和泽普林假丝酵母YC-C13发酵酒样中产生了具有脂香、黄油香气的2,3-丁二酮,质量浓度分别为69.31和69.06μg/L。美极梅奇酵母YC-A13中检测出具有扁桃仁、脂香气的1-戊醇,含量为280.15μg/L,OAV>0.1可作为潜在香气成分。综上所述,筛选出的4株优良本土非酿酒酵母具有不同的发酵特性,在提升葡萄酒香气品质和丰富度方面都有着独特的贡献与优势,为酿造具有产区特色的葡萄酒提供了理论依据。

关键词：本土非酿酒酵母耐受性发酵特性挥发性化合物

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红枣色素的提取、纯化及其理化性质研究进展

中国调味品 2017年第2期42卷 149-154页

作者：郑安然邵佩兰周华佩李宛陶宁夏大学农学院银川750021

红枣色素是从红枣枣皮中提取的一种天然色素,其色泽鲜艳、枣香浓郁、安全无毒,是一种理想的天然色素资源。随着社会的发展,人们的健康意识逐渐加强,而越来越多的合成色素被证明具有致癌性。系统地研究了红枣色素对了解该色素的理化性质... 详细信息

红枣色素是从红枣枣皮中提取的一种天然色素,其色泽鲜艳、枣香浓郁、安全无毒,是一种理想的天然色素资源。随着社会的发展,人们的健康意识逐渐加强,而越来越多的合成色素被证明具有致癌性。系统地研究了红枣色素对了解该色素的理化性质、功能特性及提高该色素的加工性和商品性的重要意义。目前我国对红枣色素的研究多集中在提取方法和稳定性方面,在其他方面的研究尚有许多不足。文章围绕红枣色素的提取、纯化、稳定性、结构及抗氧化活性等方面,综述了近几年国内外红枣色素的研究进展,同时展望了该色素的研究方向及应用前景,旨在为更好地开发利用红枣色素提供参考。

关键词：红枣色素提取纯化稳定性抗氧化活性

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城市煤气甲烷化工艺的化学能损失

天然气化工—C1化学与化工 1999年第5期24卷 16-20页

作者：夏素兰朱家骅周勇夏代宽四川大学化工学院成都610065

通过解析城市煤气甲烷化过程化学能的损失，指出ＣＯ变换应以满足甲烷化反应要求为限，过度变换会造成无谓的化学能损失且降低产品气热值。提出以国家标准规定的城市煤气热值下限和ＣＯ含量上限为控制指标的参数准则，并在２－５Ｌ ... 详细信息

通过解析城市煤气甲烷化过程化学能的损失，指出ＣＯ变换应以满足甲烷化反应要求为限，过度变换会造成无谓的化学能损失且降低产品气热值。提出以国家标准规定的城市煤气热值下限和ＣＯ含量上限为控制指标的参数准则，并在２－５Ｌ级现场实验中得到了验证。

关键词：煤气甲烷化变换化学能损失一氧化碳

Sine oculis homeobox homolog family function in gastrointestinal cancer:Progression and comprehensive analysis

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World Journal of Clinical Oncology 2025年第1期16卷 10-24页

作者： Yang-Zheng lan Zheng Wu Wen-Jia Chen Xin-Ning Yu hua-Tao Wu Jing Liu Department of The Breast Center Cancer Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina Department of General Surgery First Affiliated Hospital of Shantou University Medical CollegeShantou 515041Guangdong ProvinceChina

The sine oculis homeobox homolog(SIX)family,a group of transcription factors characterized by a conserved DNA-binding homology domain,plays a critical role in orchestrating embryonic development and organogenesis across various organisms,including *** six distinct members,from SIX1 to SIX6,each member contributes uniquely to the development and differentiation of diverse tissues and organs,underscoring the versatility of the SIX *** or mutations in SIX genes have been implicated in a spectrum of developmental disorders,as well as in tumor initiation and progression,highlighting their pivotal role in maintaining normal developmental trajectories and cellular *** to target the transcriptional complex of the SIX gene family have emerged as a promising strategy to inhibit tumor *** the development of inhibitors targeting this gene family is still in its early stages,the significant potential of such interventions holds promise for future therapeutic ***,this review aimed to comprehensively explore the advancements in understanding the SIX family within gastrointestinal cancers,focusing on its critical role in normal organ development and its implications in gastrointestinal cancers,including gastric,pancreatic,colorectal cancer,and hepatocellular *** conclusion,this review deepened the understanding of the functional roles of the SIX family and explored the potential of utilizing this gene family for the diagnosis,prognosis,and treatment of gastrointestinal cancers.

关键词： Sine oculis homeobox homolog Gastrointestinal cancer Transcription factor Development Regulation Diagnosis Therapeutics