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Local magnetic moment oscillation around an Anderson impurity on graphene

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 192-201页

作者： Shuai li zhen Ma Jin-Hua gao School of Science Hebei University of Science and Technology School of Electronics and Information Zhengzhou University of Light Industry School of Physics and Wuhan National High Magnetic Field Center Huazhong University of Science and Technology

We theoretically investigate the spin resolved Friedel oscillation （FO） and quasiparticle interference （QPI） in graphene induced by an Anderson *** the impurity becomes magnetic,the resulted FO becomes spin dependent,which gives rise to a local magnetic moment oscillation with an envelop decaying as r-2in real space in the doping ***,at half filling,the electron density and local magnetic moment will not oscillate but decay as *** spin resolved FO has both sublattice and spin ***,the local magnetic moment decay at half filling only occurs at one sublattice of graphene,which is quite like the phenomenon observed in the STM experiment (***ález-Herrero et al.,Science 352,437 （2016）).We further give an analytic formula about such spin dependent FO based on the stationary phase ***,we study the interference of quasiparticles around the magnetic impurity by calculating the spin dependent Fourier-transformed local density of states （FT-LDOS）.Our work gives a comprehensive understanding about the local magnetic moment oscillation around an Anderson impurity on graphene.

关键词： Friedel oscillation local magnetic moment graphene Anderson impurity

Advances in electrochemical reduction of carbon dioxide to formate over bismuth-based catalysts

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Rare Metals 2021年第9期40卷 2327-2353页

作者： Yu-Hong Wang Wen-Jun Jiang Wei Yao Zai-Lun liu Zhe liu Yong Yang li-zhen gao College of Environmental Science and Engineering Taiyuan University of TechnologyTaiyuan 030024China Qian Xuesen Laboratory of Space Technology China Academy of Space TechnologyBeijing 100094China State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical University Xi’anXi’an 710072China School of Mechanical Engineering University of Western AustraliaPerth 6009Australia

Selective CO_(2) reduction to formate with highadded value is one of the most technologically and economically feasible pathways to realize electrochemical CO_(2) fixation. Bismuth-based catalysts have the advantages of nontoxicity, low cost, high abundance, as well as excellent stability. In addition, bismuth-based catalysts display excellent selectivity for the electrochemical reduction of CO_(2) to formate in aqueous electrolytes due to high-hydrogen evolution overpotential. Hence, bismuthbased catalysts are by far the most commercially available materials for electrochemical reduction of CO_(2) to *** this review, the electrochemical reduction of CO_(2) to formate over bismuth-based catalysts is elaborated. Firstly,this review describes performance evaluation indexes,evaluation systems and reaction mechanisms of the electrochemical reduction of CO_(2) to formate over bismuthbased catalysts. Subsequently, the research means to reveal the reaction mechanism of electrochemical reduction of CO_(2) to formate over bismuth-based catalysts and the performance improvement strategies of the reaction are described in detail. Finally, the opportunities and challenges in this encouraging field are discussed. We believe that this review will contribute to further development of electrochemical reduction of CO_(2) to formate over bismuthbased catalysts.

关键词： Electrochemical CO_(2)reduction Formate Bismuth-based catalysts Reaction research Performance improvement

Tolerance of Grasses to Heavy Metals and Microbial Functional Diversity in Soils Contaminated with Copper Mine Tailings

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Pedosphere 2008年第3期18卷 363-370页

作者： TENG Ying LUO Yong-Ming HUANG Chang-Yong LONG Jian li zhen-gao P. CHRISTIE Soil and Environment Bioremediation Research Centre Institute of Soil Science Chinese Academy of Sciences Nanjing210008 （China） College of Resources and Environmental Sciences Zhejiang University Hangzhou 310029 （China） Department of Agricultural and Environmental Science Queen＇s University Belfast Newforge Lane Beyast BT9 5PX（UK）

Copper （Cu） mine tailings, because of their high content of heavy metals, are usually hostile to plant colonization. A pot experiment was conducted to determine the tolerance of four forage grasses to heavy metals in Cu mine tailings and to examine the variation in the microbial functional diversity of soils from the tailing sites in southern China. All the four grass species survived on Cu mine tailings and Cu mine tailing-soil mixture. However, on pure mine tailings, the growth was minimal, whereas the growth was maximum for the control without mine tailings. The tolerance of grasses to heavy metals followed the sequence： Paspalum notatum 〉 Festuea arundinaeea 〉 Lolium perenne 〉 Cynodon daetylon. The planting of forage grasses enhanced the soil microbial biomass. The Biolog data indicated that the soil microbial metabolic profile values （average well color development, community richness, and Shannon index） of the four forage grasses also followed the sequence： P. notatum 〉 F. arundinaeea 〉 L. perenne 〉 C. daetylon. Thus, P. notatum, under the experimental conditions of this study, may be considered as the preferred plant species for revegetation of Cu mine tailing areas.

关键词： copper mine tailings forage grass heavy metal pollution microbial functional diversity

Contamination of PAHs in Sludge Samples from the Yangtze River Delta Area

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Pedosphere 2007年第3期17卷 373-382页

作者： SHEN Rong-Yan LUO Yong-Ming ZHANG Gang-Ya TENG Ying li zhen-gao WU Long-Hua Institute of Soil Science Chinese Academy of Sciences Nanjing 210008 （China） Graduate School of Chinese Academy of Sciences Beijing 100039 （China）

To ascertain the contaminated conditions of polycyclic aromatic hydrocarbons （PAHs） in sludge and to evaluate the risk of application of this sludge for agricultural purposes, 44 sludge samples obtained from 15 cities in the Yangtze River Delta area of China were investigated using capillary gas chromatography/mass spectrometry （GC/MS） after ultrasonic extraction and silica gel cleanup. PAHs＇ contents ranged from 0.0167 to 15.4860 mg kg^-1 （dry weight, DW） and averaged 1.376 mg kg^-1, with most samples containing 〈 1.5 mg kg^-1. Pyrene （PY）, fluoranthene （FL）, benzo[b]fluoranthene （BbF）, indeno[1,2,3-cd]pyrene （IND）, benzo[a]pyrene （B[a]P）, and benzo[g,h,i]perylene （BghiP） were the most dominant compounds, ranging from 0.1582 to 0.2518 mg kg^-1. Single PAH, such as naphthalene （NAP, 2-benzene rings）, phenanthrene （PA, 3-benzene rings）, PY （4-benzene rings）, and FL （3-benzene rings）, had high detection rates （76.1%-93.5%）. The distribution patterns of PAHs were found to vary with the sludge samples; however, the patterns showed that a few compounds with 2- and 3-benzene rings were commonly found in the samples, whereas those with 4-, 5-, and 6-benzene rings were usually less commonly found. All the 44 sludge samples were within the B[a]P concentration limit for sludge applied to agricultural land in China （〈 3.0 rag kg^-1）. The probable sources of PAH contamination in the sludge samples were petroleum, petroleum products, and combustion of liquid and solid fuel. The concentrations and distributions of the 16 PAHs in sludge were related to sludge type, source, and treatment technology, together with the physicochemical properties.

关键词： municipal sludge organic pollutants polycyclic aromatic hydrocarbons Yangtze River Delta

Determination the Hydrogen Stored in Carbon Nanotubes by NO Titration Method

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Chinese Chemical Letters 2001年第11期12卷 1015-1018页

作者： Shui Hua TANG li zhen gao Bao Chun liU He li Bo Lan ZHANG liang Fu ZHANG Zuo Long YU Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 61004 Institute of Chemical Engineering Materials CAEPMianyang 621900

A novel method was established to determine the H-2-storage capacity in carbon nanotubes. According to 2NO+2H(2) (or 4H) = N-2+2H(2)O reaction, the H-2-storage capacity in carbon nanotubes could be calculated. The H-2... 详细信息

关键词： NO titration hydrogen storage carbon nanotubes

NO Decomposition on Rh Supported CNTs

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Chinese Chemical Letters 2001年第1期12卷 83-86页

作者： Shui Hua TANG Bao Chun liU Qi liANG li zhen gao liang Fu ZHANG Zuo Long YU Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 610041

The decomposition of NO has been studied in a steady flow reactor on fresh carbon nanotubes (CNTs), purified CNTs, Rh/p-CNTs and Rh/gamma -Al2O3 between 573 K and 973 K. NO decomposition at 573 K was initially complete over a reduced surface. The amount of NO absorption increased at temperature below 773 K. 100% NO conversion and more than 100% N-2 activity was achieved at 973 K for 150 min on p-CNTs and f-CNTs.

关键词： NO decomposition NO absorption carbon nanotubes rhodium

A Study on Production of Carbon Nanotubes by CH_4 Decomposition over LaNiO_3,La_4Ni_3O_(10),La_3Ni_2O_7 and La_2NiO_4

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Chinese Chemical Letters 2001年第9期12卷 839-842页

作者： He li Shui Hua TANG Bao Chun liU li zhen gao Bai ling liU Qi liANG Bo Lan ZHANG Zuo Long YU Chengdu Institute of Organic Chemistry Chinese Academy of SciencesChengdu 610041

Carbon nanotubes (CNTs) of narrow size distribution can be abundantly produced in the catalytic decomposition of CH4 over pre-reduced LaNiO3, La4Ni3O10, La3Ni2O7 and La2NiO4. The CNTs obtained were characterized by means of transmission electron microscopy (TEM). Thermal oxidation of CNTs in air was monitored thermogravimetrically (TG). The results revealed that a lower La/Ni ratio of the catalysts would lead to a wider diameter distribution and a higher degree of graphitic nature.

关键词： Carbon nanotubes LaNiO3 La2NiO4 La3Ni2O7 La4Ni3O10 CH4

Case study of a patient with cryptozoospermia associated with a recessive TEX15 nonsense mutation

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Asian Journal of Andrology 2018年第1期20卷 101-102页

作者： Xiong Wang Hai-Rong Jin Yuan-Qing Cui Jie Chen Yan-Wei Sha zhen-li gao Reproductive Medicine Center Affiliated Yantai Yuhuangding Hospital of Qingdao University 20 Yuhuangding East Road Yantai 264000 China Department of Urological Surgery Affiliated Yantai Yuhuangding Hospital of Qingdao University 20 Yuhuangding East Road Yantai 264000 China Department of Reproductive Medicine Xiamen Maternity and Child Care Hospital No. 10 Zhenhai Road Xiamen 361003. China

Dear Editor, Male infertility, which affects approximately 20 million people worldwide, is commonly caused by spermatogenic dysfunctions, including severe oligozoospermia, cryptozoospermia, and nonobstructive azoospe... 详细信息

关键词： nonobstructive azoospermia

Denitrifying Bacteria in Paddy Soils of the Taihu Lake Basin,China

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Pedosphere 2004年第4期14卷 527-532页

作者： ZHANGHua-Yong lizhen-gao PANYing-Hua liliang-Mo InstituteofSoilScience ChineseAcademyofSciencesNanjing210008（China）.

This study attempted to determine the characteristics of the communities, the ecological factors, and the denitrifying enzyme activity for denitrifying bacteria found in the paddy soils of the Taihu Lake Basin, China. Samples of the six main soil types of the basin were taken from paddy fields with different fertilities. The total numbers of bacteria and denitrifying bacteria in the high fertility soils were much more than those in low fertility soils, and the number of denitrifying bacteria accounted for 49% to 80% of the total number of bacteria. The O2 content was an important ecological factor that affected denitrification. Of test the strains isolated from the paddy soils in the Taihu Lake Basin, some (e.g., Pseudomonas spp.) grew well under low oxygen partial pressure, while others (e.g., Bacillus spp.) had no strict predilection with O2 content. Another critical ecological factor was the nitrogen concentration. Three selected denitrifying bacteria grew better in aculture medium with 135 instead of 276mg L^-1 nitrogen. At the same time 67% of the test strains were able to reduce NO3^- to NO2^- and 56% had N2O reductase.

关键词： denitrifying bacteria ecological characteristics enzyme activity paddysoils