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Multi boron-doping effects in hard carbon toward enhanced sodium ion storage

Journal of Energy Chemistry 2025年第1期100卷 730-738页

作者： Peng Zheng Wang Zhou Ying Mo Biao Zheng Miaomiao Han qin Zhong Wenwen yang Peng Gao Lezhi yang Jilei Liu College of Materials Science and Engineering Hunan Joint International Laboratory of Advanced Materials and Technology for Clean Energy Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Greater Bay Area Institute for Innovation Hunan University Changsha Research Institute of Mining & Metallurgy Co. LTD.

Hard carbon （HC） has been considered as promising anode material for sodium-ion batteries （SIBs）.The optimization of hard carbon’s microstructure and solid electrolyte interface （SEI） property are demonstrated effective in enhancing the Na+storage capability,however,a one-step regulation strategy to achieve simultaneous multi-scale structures optimization is highly ***,we have systematically investigated the effects of boron doping on hard carbon’s microstructure and interface chemistry.A variety of structure characterizations show that appropriate amount of boron doping can increase the size of closed pores via rearrangement of carbon layers with improved graphitization degree,which provides more Na+storage ***-situ Fourier transform infrared spectroscopy/electrochemical impedance spectroscopy （FTIR/EIS） and X-ray photoelectron spectroscopy （XPS） analysis demonstrate the presence of more BC3and less B–C–O structures that result in enhanced ion diffusion kinetics and the formation of inorganic rich and robust SEI,which leads to facilitated charge transfer and excellent rate *** a result,the hard carbon anode with optimized boron doping content exhibits enhanced rate and cycling *** general,this work unravels the critical role of boron doping in optimizing the pore structure,interface chemistry and diffusion kinetics of hard carbon,which enables rational design of sodium-ion battery anode with enhanced Na+storage performance.

关键词： X ray photoelectron spectroscopy

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Separation of diffracted waves via SVD filter

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Petroleum Science 2020年第5期17卷 1259-1271页

作者： hong-yan Shen qin Li Yue-Ying yan Xin-Xin Li Jing Zhao School of Earth Sciences and Engineering Xi’an Shiyou UniversityXi’an 710065ShaanxiChina Key Laboratory of Shaanxi Province for Oil and Gas

Diffracted seismic waves may be used to help identify and track geologically heterogeneous bodies or ***,the energy of diffracted waves is weaker than that of ***,the extraction of diffracted waves is the basis for the effective utilization of diffracted *** on the difference in travel times between diffracted and reflected waves,we developed a method for separating the diffracted waves via singular value decomposition filters and presented an effective processing flowchart for diffracted wave separation and *** research results show that the horizontally coherent difference between the reflected and diffracted waves can be further improved using normal move-out(NMO) ***,a band-rank or high-rank approximation is used to suppress the reflected waves with better transverse ***,separation of reflected and diffracted waves is achieved after the filtered data are transformed into the original data domain by inverse *** and field examples show that our proposed method has the advantages of fewer constraints,fast processing speed and complete extraction of diffracted *** the diffracted wave imaging results can effectively improve the identification accuracy of geological heterogeneous bodies or zones.

关键词： Geological heterogeneity Reflected waves Diffracted waves SVD filter Seismic wave field separation Migration imaging

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Finite element modeling of consolidation process of Si C fiber-reinforced titanium matrix composites via matrix-coated fiber method

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Rare Metals 2015年第12期34卷 844-850页

作者： Xiang-hong Xu yan-qing yang Xian Luo Lin qin Ju-hong Lou qing Sun Shazhou Polytechnic Institute of Technology State Key Laboratory of Solidification Processing Northwestern Polytechnical University

The consolidation process of SiCf/Ti-6Al-4V composites by matrix-coated fiber (MCF) method via hot pressing was investigated using finite element modeling (FEM). By analyzing the elastic–plastic contact deformation of the representative aligned coated fibers, the consolidation maps delineating the time–temperature–pressure relationship for full densification were constructed. Both the flow coefficient and the contact area coefficient used to describe the contact deformation were calculated according to the model. In addition, the effect of fiber content on matrix stress distribution was analyzed. The results show that fiber content is a significant factor that influences the densification process. Higher fiber content will lower the consolidation rate.

关键词： Titanium matrix composites Consolidation Finite element modeling Matrix-coated fiber

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产过敏素harpin的固氮工程菌的某些特性研究

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微生物学通报 2002年第4期29卷 18-22页

作者：朱红惠李艳琴赵立平邱晓颖丘明祺山西大学生物工程开放实验室太原030006 广东省微生物研究所广州510070

研究了产过敏素harpin的固氮工程菌(Enterobacter cloacae E4)在番茄、烟草叶片上的致过敏能力及该菌所携的双质粒的稳定性。试验结果表明:E4与DH5(pCPP430)致过敏能力的速度和强度基本相同。E4与308R(pCPP430)相比,烟草上它们致过敏能... 详细信息

研究了产过敏素harpin的固氮工程菌(Enterobacter cloacae E4)在番茄、烟草叶片上的致过敏能力及该菌所携的双质粒的稳定性。试验结果表明:E4与DH5(pCPP430)致过敏能力的速度和强度基本相同。E4与308R(pCPP430)相比,烟草上它们致过敏能力的速度基本一致,但308R(pCPP430)致过敏能力的强度更强,在番茄叶片上,E4和308R(pCPP430)致过敏能力的速度和强度基本一样。E4所携的双质粒pCPP430和pMC73A在宿主细菌中是不稳定的,在宿主细菌连续繁殖过程中,质粒pCPP430和pMC73A随宿主细菌的繁殖而发生缺失,当连续传代48代时,双质粒的丢失率达100％,而且各含一种质粒的细胞产生的机率基本相同。

关键词：过敏素harpin 固氮工程菌特性 E4 hrpN基因 nifA基因致过敏能力质粒稳定性诱导抗病性

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EDA: an enhanced dual-active algorithm for location privacy preservation in mobile P2P networks

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第5期14卷 356-373页

作者： yan-zhe CHE Kevin CHIEW Xiao-yan hong Qiang yanG qin-ming HE College of Computer Science and Technology Zhejiang University School of Engineering Tan Tao University Department of Computer Science University of Alabama College of Electrical Engineering Zhejiang University

Various solutions have been proposed to enable mobile users to access location-based services while preserving their location privacy. Some of these solutions are based on a centralized architecture with the participation of a trustworthy third party, whereas some other approaches are based on a mobile peer-to-peer (P2P) architecture. The former approaches suffer from the scalability problem when networks grow large, while the latter have to endure either low anonymization success rates or high communication overheads. To address these issues, this paper deals with an enhanced dual-active spatial cloaking algorithm (EDA) for preserving location privacy in mobile P2P networks. The proposed EDA allows mobile users to collect and actively disseminate their location information to other users. Moreover, to deal with the challenging characteristics of mobile P2P networks, e.g., constrained network resources and user mobility, EDA enables users (1) to perform a negotiation process to minimize the number of duplicate locations to be shared so as to significantly reduce the communication overhead among users, (2) to predict user locations based on the latest available information so as to eliminate the inaccuracy problem introduced by using some out-of-date locations, and (3) to use a latest-record-highest-priority (LRHP) strategy to reduce the probability of broadcasting fewer useful locations. Extensive simulations are conducted for a range of P2P network scenarios to evaluate the performance of EDA in comparison with the existing solutions. Experimental results demonstrate that the proposed EDA can improve the performance in terms of anonymity and service time with minimized communication overhead.

关键词： Location-based service Privacy preservation Spatial cloaking Mobile peer-to-peer networks

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Quantitative Study of Iron Metabolism-related Genes Expression in Rat

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Biomedical and Environmental Sciences 2013年第10期26卷 808-819页

作者： LI yan qin BAI Bin ZHENG Quan qing yan hong ZHUANG Gui Hua Department of Public Health College of MedicineXi’an Jiaotong University Department of Orthopedics The First Affiliated Hospital of the College of MedicineXi’an Jiaotong University

Objective To investigate the multiple iron metabolism-related genes expression, its regulation by iron and the expression correlation among the genes in rat tissues. Methods Two groups （n=30） of Sprague-Dawley female weanling rats were fed with a control diet and an iron deficient diet respectively for 4 weeks. All rats were then sacrificed, and blood and tissue samples were collected. The routine blood examination was performed with a veterinary automatic blood cell analyzer. Elemental iron levels in liver, spleen and serum were determined by atomic absorption spectrophotometry. The mRNA expression of genes was detected by real-time fluorescence quantitative PCR. Results After 4 weeks, the hemoglobin （Hb） level and red blood cell （RBC） count were significantly lower in the iron deficient group compared with those in the control group. The iron levels in liver, spleen and serum in the iron deficient group were significantly lower than those in the control group. In reference to small intestine, the relative expression of each iron-related gene varied in the different tissues. Under the iron deficiency, the expression of these genes changed in a tissue-specific manner. The expression of most of the genes significantly correlated in intestine, spleen and lung, but few correlated in liver, heart and kidney. Conclusion Findings from our study provides new regulation by iron and correlation among the mRNA divalent metal transporter 1, ferritin, iron regulation protein, hepcidin, ferroportin 1 and hephaestin in intesti understandings about the relative expression, expressions of transferrin receptors 1 and 2, proteins 1 and 2, hereditary hemochromatosis ne, liver, spleen, kidney, heart, and lung of rat.

关键词： Iron Tfr Dmtl Hepcidin Ferroportin 1 Hephaestin

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The roles of microRNAs in regulating root formation and growth in plants

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Journal of Integrative Agriculture 2022年第4期21卷 901-916页

作者： yan Xiao-xiao LIU Xiang-yang CUI hong ZHAO Ming-qin College of Tobacco Science Henan Agricultural University/National Tobacco Cultivation and Physiology and Biochemistry Research Center/Key Laboratory for Tobacco Cultivation of Tobacco IndustryZhengzhou 450002P.R.China

MicroRNAs(miRNAs) are small(ca. 20-24 nucleotides) non-coding RNAs that have recently been recognized as key post-transcriptional modulators of gene expression;and they are involved in many biological processes in plants, such as root growth and development. The miRNAs regulate root elongation, lateral root(LR) formation and adventitious root(AR) development in response to hormone signaling, nutrient uptake and biotic/abiotic stress. This review provides multiple perspectives on the involvement of miRNAs in regulating root growth and development in plants. We also discuss several crucial mechanisms of miRNAs, their relationships with transcription factors and the target gene-mediated hormone signaling interactions in the regulation of root growth and development.

关键词： microRNAs adventitious root lateral root primary root

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Asymptotic in the Ordered Networks with a Noisy Degree Sequence

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Journal of Systems Science & Complexity 2022年第3期35卷 1137-1153页

作者： LUO Jing qin hong Department of Mathematics and Statistics South-Central University for NationalitiesWuhan 430074China Department of Statistics Zhongnan University of Economics and LawWuhan 430073China

In the case of the differential privacy under the Laplace mechanism,the asymptotic properties of parameter estimators have been derived in some special network models with common binary values,but the asymptotic properties in network models with the ordered values are *** this paper,the authors release the degree sequences of the ordered networks under a general noisy mechanism with the discrete Laplace mechanism as a special *** authors establish the asymptotic result including the consistency and asymptotical normality of the parameter estimator when the number of parameters goes to *** and a real data example are provided to illustrate asymptotic results.

关键词： Asymptotic normality consistency degree differential privacy network data

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两种密码体制加密技术的研究对比

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沈阳工业大学学报 2003年第5期25卷 430-432页

作者：孟艳红秦维佳吕海华沈阳工业大学信息科学与工程学院辽宁沈阳110023

描述了数据加密技术中的两种密码体制,并分别针对两类体制中的几种典型算法的原理及加密、解密过程进行阐述,比较了各算法的性能及优缺点,分析其适用场合,提出了实现网络上数据加密较好的方法.

关键词：数据加密对称式密码体制非对称式密码体制

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Magnetron sputtered nickel oxide with suppressed interfacial defect states for efficient inverted perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 348-355页

作者： Guoqiang Ma qin Tan Zhaoning Li Jingwei Xiu Jiafeng Wang Tianle Cheng Dong He Qiang Sun Xuhang Ma Francesco Lamberti Zhubing He Department of Materials Science and Engineering Institute of Innovative Materials (I2M) Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG)Southern University of Science and Technology (SUSTech) Core Research Facilities Southern University of Science and Technology Department of Chemical Sciences Department of Industrial Engineering University of Padova

Widely used spin-coated nickle oxide （NiOx） based perovskite solar cells often suffer from severe interfacial reactions between the NiOxand adjacent perovskite layers due to surface defect states,which inherently impair device performance in a long-term view,even with surface molecule *** this study,we developed high-quality magnetron-sputtered NiOxthin films through detailed process optimization,and compared systematically sputtered and spin-coated NiOxthin film surfaces from materials to *** sputtered NiOxfilms exhibit improved crystallinity,smoother surfaces,and significantly reduced Ni3+or Ni vacancies compared to their spin-coated ***,the interface between the perovskite and sputtered NiOxfilm shows a substantially reduced density of defect *** solar cells （PSCs） fabricated with our optimally sputtered NiOxfilms achieved a high power conversion efficiency （PCE） of up to 19.93%and demonstrated enhanced stability,maintaining 86.2% efficiency during 500 h of maximum power point tracking under one standard sun ***,with the surface modification using (4-(2,7-dibromo-9,9-dimethylacridin-10（9H）-yl)butyl)p hosphonic acid （DMAcPA）,the device PCE was further promoted to 23.07%,which is the highest value reported for sputtered NiOxbased PSCs so far.

关键词： Nickle oxide Magnetron sputter Defect Stability Perovskite solar cell

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