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Steering surface reconstruction of hybrid metal oxides for efficient oxygen evolution reaction in water splitting and zinc-air batteries

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Journal of Energy Chemistry 2024年第5期92卷 383-393页

作者： Jie Zhu Junxue Chen Xida Li Kun luo zewei Xiong Zhiyu Zhou Wenyun Zhu Zhihong luo Jingbin Huang Yibing Li Key Lab of New Processing Technology for Nonferrous Metals and Materials Ministry of EducationSchool of Materials Science and EngineeringGuilin University of TechnologyGuilin 541000GuangxiChina The Key Laboratory of Rare Earth Functional Materials and Applications Zhoukou Normal UniversityZhoukou 466001HenanChina School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing 100081China School of Materials Science and Engineering Changzhou UniversityChangzhou 213164JiangsuChina Wuhan Sunmoon Battery Co. LtdWuhan 430090HubeiChina

Surface reconstruction yields real active species in electrochemical oxygen evolution reaction(OER)conditions;however,rationally regulating reconstruction in a targeted manner for constructing highly active OER electrocatalysts remains a formidable challenge.Here,an electrochemical activation strategy with selective etching was utilized to guide the reconstruction process of a hybrid cobalt-molybdenum oxide(CoMoO_(4)/Co_(3)O_(4)@CC)in a favorable direction to improve the OER performance.Both in-situ Raman and multiple ex-situ characterization tools demonstrate that controlled surface reconstruction can be easily achieved through Mo etching,with the formation of a dynamically stable amorphous-crystalline heterostructure.Theoretical calculations together with experimental results reveal that the synergistic effects between amorphous CoOOH and crystalline Co_(3)O_(4) are crucial in enhancing the catalytic performance.Consequently,the reconstructed CoMoO_(4)/Co_(3)O_(4)@CC exhibits a low overpotential of 250 mV to achieve a current density of 10 mA cm^(-2) in 1 M KOH,and more importantly it can be practiced in electrolytic water splitting and rechargeable zinc-air batteries devices,achieving ultra-long stability for over 500 and 1200 h,respectively.This work provides a promising route for the construction of high-performance electrocatalysts.

关键词： Electrocatalyst Oxygen evolution reaction Surface reconstruction Selective etching Amorphous-crystalline heterostructures

Structured illumination-based super-resolution live-cell quantitative FRET imaging

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Photonics Research 2023年第5期11卷 887-896页

作者： zewei luo GE WU MENGTING KONG ZHI CHEN ZHENGFEI ZHUANG JUNCHAO FAN TONGSHENG CHEN Key Laboratory of Laser Life Science Ministry of EducationCollege of BiophotonicsSouth China Normal UniversityGuangzhou 510631China Guangdong Key Laboratory of Laser Life Science College of BiophotonicsSouth China Normal UniversityGuangzhou 510631China SCNU Qingyuan Institute of Science and Technology Innovation South China Normal UniversityQingyuan 511520China Chongqing Key Laboratory of Image Cognition College of Computer Science and TechnologyChongqing University of Posts and TelecommunicationsChongqing 400065China

Forster resonance energy transfer(FRET)microscopy provides unique insight into the functionality of biological systems via imaging the spatiotemporal interactions and functional state of proteins.Distinguishing FRET signals from sub-diffraction regions requires super-resolution(SR)FRET imaging,yet is challenging to achieve from living cells.Here,we present an SR FRET method named SIM-FRET that combines SR structured illumination microscopy(SIM)imaging and acceptor sensitized emission FRET imaging for live-cell quantitative SR FRET imaging.Leveraging the robust co-localization prior of donor and accepter during FRET,we devised a mask filtering approach to mitigate the impact of SIM reconstruction artifacts on quantitative FRET analysis.Compared to wide-field FRET imaging,SIM-FRET provides nearly twofold spatial resolution enhancement of FRET imaging at sub-second timescales and maintains the advantages of quantitative FRET analysis in vivo.We validate the resolution enhancement and quantitative analysis fidelity of SIM-FRET signals in both simulated FRET models and live-cell FRET-standard construct samples.Our method reveals the intricate structure of FRET signals,which are commonly distorted in conventional wide-field FRET imaging.

关键词： illumination resolution donor

Theoretical strategies for high-resolution mapping of complex genetic disorders in humans

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Chinese Science Bulletin 1999年第3期44卷 193-198页

作者： zewei luo Rongmei Zhang Fudan Univ Inst Genet Lab Populat & Quantitat Genet Shanghai 200433 Peoples R China

Positional cloning of gene(s) underlying a complex disease trait poses requirement of a highresolution linkage map between the disease locus and genetic marker loci. Recent researches have shown that this may be achieved through appropriately modeling and screening linkage disequilibrium between the candidate marker locus and the major trait locus. However, these models were restricted to the circumstances where genotyping at the disease locus was feasible. The major limitations of pedigree-based linkage analyses were addressed in the light of positional cloning and positional candidate gene identification in humans. It summarizes the recent efforts in developing theories for fine-scale mapping of genes underlying complex genetic variations where the one-to-one relationship no longer exists between phenotype of the genetic disorders and the corresponding genotype.

关键词： positional cloning high-resolution genetic mapping complex genetic traits human.

Des=gn of efficient simplified genomic DNA and bisulfite sequencing in large plant populations

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Frontiers of Electrical and Electronic Engineering in China 2016年第3期4卷 226-239页

作者： Jinhua Wu zewei luo Ning Jiang Institute of Biostatistics Fudan University Shanghai 200438 China

The next generation sequencing enables generation of high resolution and high throughput data for structure sequence of any genome at a fast declining cost. This opens opportunity for population based genetic and genomic analyses. In many applications, whole genome sequencing or re-sequencing is unnecessary or prohibited by budget limits. The Reduced Representation Genome Sequencing （RRGS）, which sequences only a small proportion of the genome of interest, has been proposed to deal with the situations. Several forms of RRGS are proposed and implemented in the literature. When applied to plant or crop species, the current RRGS protocols shared a key drawback that a significantly high proportion （up to 60%） of sequence reads to be generated may be of non-genomic origin but attributed to chloroplast DNA or rRNA genes, leaving an exceptional low efficiency of the sequencing experiment. We recommended and discussed here the design of optimized simplified genomic DNA and bisulfite sequencing strategies, which may greatly improves efficiency of the sequencing experiments by bringing down the presentation of the undesirable sequencing reads to less than 10% in the whole sequence reads. The optimized RAD- seq and RRBS-seq methods are potentially useful for sequence variant screening and genotyping in large plant/crop populations.

关键词： plant/crop genomes next generation sequencing genotyping restriction-enzyme sites associated DNA（RAD） DNA methylation reduced representation bisulfite sequencing

Rate of decay in admixture linkage disequilibrium and its implication in gene mapping

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Chinese Science Bulletin 2001年第5期46卷 358-363页

作者： Shiheng Tao Xiaoming Liu Jianhua Chu Rongmei Zhang Liping Du zewei luo Fudan Univ Sch Life Sci Inst Genet Lab Populat & Quantitat Genet Shanghai 200433 Peoples R China

Modeling linkage disequilibria (LD) between genes usually observed in admixed natural populations has been shown an effective approach in high-resolution mapping of disease genes in humans. A prerequisite to obtain accurate estimation of recombination fraction between genesat a marker locus and the disease locus using the approach is a reliable prediction of the proportion of the admixture populations. The present study suggested the use of gene frequencies to predict the estimate of the admixture proportion based on the observation that the gene frequencies are much more stable quantities than the haplotype frequencies over evolution of the population. In this paper, we advanced the theory and methods by which the decay rate of nonlinear term of LD in admixed population may be used to estimate the recombination fraction between the genes. Theoretical analysis and simulation study indicate that, the larger the difference of gene frequencies between parental populations and the more closely the

关键词： linkage disequilibrium admixture population high-resolution gene mapping.

A population genetics model of linkage disequilibrium in admixed populations

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Chinese Science Bulletin 2001年第3期46卷 193-197页

作者： Shiheng Tao Rongmei Zhang Jianhua Chu Xiaoming Liu Liping Du Qingyuan Qi zewei luo Laboratory of Population and Quantitative Genetics Institute of Genetics School of Life Science Fudan University Shanghai China

Understanding linkage disequilibrium (LD) created in admixed population and the rate of decay in the disequilibrium over evolution is an important subject in population genetics theory and in disease gene mapping in human populations. The present study represents the theoretical investigation of effects of gene frequencies, levels of LD and admixture proportions of donor populations on the evolutionary dynamics of the LD of the admixed population. We examined the conditions under which the admixed population reached linkage equilibrium or the peak level of the LD. The study reveals the inappropriateness in approximating the dynamics of the LD generated by population admixture by the commonly used formula in literature. An appropriate equation for the dynamics isproposed. The distinct feature of the newly suggested formula is that the value of the nonlinear component of the LD remains constant in the first generation of the population evolution. Comparison between the predicted disequilibrium dynamics

关键词： linkage disequilibrium admixture population error analysis.

福建省林业碳汇项目价值评估及金融产品定价——基于实物期权理论

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中国国土资源经济 2024年第1期37卷 48-55页

作者：柯文岚李泽伟罗世兴福建江夏学院经济贸易学院生态技术经济研究院福州350108 桂林银行股份有限公司广西桂林541000 中国自然资源经济研究院北京101149

文章结合林业碳汇投资规模大、回收周期长、碳汇产品定价难等特征,基于实物期权定价理论,利用Black-Scholes模型,对福建省碳汇造林项目价值和碳汇交易价格进行实证研究。结果表明,采用常规的净现值法计算出的项目价值与引入实物期权评... 详细信息

文章结合林业碳汇投资规模大、回收周期长、碳汇产品定价难等特征,基于实物期权定价理论,利用Black-Scholes模型,对福建省碳汇造林项目价值和碳汇交易价格进行实证研究。结果表明,采用常规的净现值法计算出的项目价值与引入实物期权评价模型计算出的项目价值运用灰色预测模型与2022年福建省林业碳汇成交均价相比较,林业碳汇造林项目价值及碳汇产品交易价格均被严重低估,基于实物期权理论的评估方法对林业碳汇产品进行定价更加科学合理。为进一步丰富林业碳汇金属产品交易体系,提高碳汇市场活跃度,文章提出对策建议:①深化林权制度改革,激励林农营林造林;②科学核算投资回报,提高经营者积极性;③创新碳金融产品,规避价格波动风险;④引入多元交易主体,促进碳汇流通交易。

关键词：福建省林业碳汇金融产品定价实物期权 Black-Scholes模型

Response mechanism of Chlamydomonas reinhardtii to nanoscale bismuth oxyiodide(nano-BiOI):Integrating analysis of mineral nutrient metabolism and metabolomics

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Journal of Environmental Sciences 2022年第11期34卷 13-24页

作者： Yan Huang Jinlong Lai Yang Huang Xuegang luo Xu Yang zewei Liu Yue Duan Chen Li School of Life Sciences Southwest University of Science and TechnologyMianyang 621010China College of Environment and Resources Southwest University of Science and TechnologyMianyang 621010China Laboratory of Solid Waste Treatment and Resource Recycle Ministry of EducationMianyang 621010China College of Chemical and Environment Science Shaanxi University of TechnologyHanzhong 723000China

Nanoscale bismuth oxyiodide(nano-BiOI) is widely studied and applied in environmental applications and biomedical fields, with the consequence that it may be deposited into aquatic environments. However, the impact of nano-Bi OI on aquatic ecosystems, especially freshwater microalga, remains limited. Herein, the nano-Bi OI was synthesized and its response mechanism towards microalga Chlamydomonas reinhardtii was evaluated. Results showed that a low concentration of nano-Bi OI(5 mg/L) could stimulate algal growth at the early stage of stress. With the increase in concentration, the growth rate of algal cells was inhibited and showed a dose effect. Intracellular reactive oxygen species(ROS) were significantly induced and accompanied by enhanced lipid peroxidation, decreased nonspecific esterase activity, and significantly upregulated glutathione S-transferase activity(GST) activity. Mineral nutrient metabolism analysis showed that nano-Bi OI significantly interfered with the mineral nutrients of the algae. Non-targeted metabolomics identified 35 different metabolites(DEMs, 22 upregulated, and 13 downregulated) under 100 mg/L Bi OI stress.Metabolic pathway analysis demonstrated that a high concentration of nano-Bi OI significantly induced metabolic pathways related to amino acid biosynthesis, lipid biosynthesis,and glutathione biosynthesis, and significantly inhibited the sterol biosynthesis pathway.This finding will contribute to understanding the toxicological mechanisms of nano-Bi OI on C. reinhardtii.

关键词： Chlamydomonas reinhardtii Nano-BiOI Mineral nutrient Metabolomics

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滇西陇川某地稀土矿稀土元素赋存状态研究

中国稀土学报 2024年第2期42卷 371-380,I0006页

作者：潘泽伟杨清标罗建宏苏肖宇唐忠余海军卢玉喜明添学孙鹏朱多录云南省地质调查院云南昆明650216 昆明理工大学国土资源工程学院云南昆明650093 自然资源部三江成矿作用及资源勘查利用重点实验室云南昆明650051 云南省国土资源规划设计研究院云南昆明650216

滇西陇川某地稀土矿为近年新发现的稀土矿床,为确定该稀土矿在现代技术条件下能否实施工业开采,开展了矿石稀土元素的赋存状态研究。通过化学物相分析,包括离子相、胶态沉积相、矿物相和水溶相四个相态进行逐级分离,结合X射线粉晶衍射,... 详细信息

滇西陇川某地稀土矿为近年新发现的稀土矿床,为确定该稀土矿在现代技术条件下能否实施工业开采,开展了矿石稀土元素的赋存状态研究。通过化学物相分析,包括离子相、胶态沉积相、矿物相和水溶相四个相态进行逐级分离,结合X射线粉晶衍射,查明了滇西陇川某地稀土矿中稀土元素的赋存状态。结果表明,该稀土矿中稀土元素赋存状态主要以离子相为主,全相稀土元素的富集和离子相稀土元素的富集相吻合,结合该区风化壳矿物组成特征,认为黏土矿物(高岭石、伊利石)是其稀土元素主要的载体矿物,稀土元素呈离子交换相吸附于黏土矿物中富集。解决了该矿床稀土元素赋存状态问题,对丰富和完善该区稀土元素次生富集机制具有重要意义,并为后续稀土资源综合利用提供依据。

关键词：滇西离子吸附型稀土矿赋存状态稀土元素