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International Journal of Minerals,Metallurgy and Materials 2013年第7期20卷 645-652页

作者： lin fan Cui-wei Du Zhi-yong Liu Xiao-gang Li School of Materials Science and Engineering University of Science and Technology Beijing

Susceptibilities to stress corrosion cracking （SCC） of X80 pipeline steel in high pH solutions with various concentrations of HC03 at a passive potential of-0.2 V vs. SCE were investigated by slow strain rate tensile （SSRT） test. The SCC mechanism and the effect of HC03 were discussed with the aid of electrochemical techniques. It is indicated that X80 steel shows enhunced susceptibility to SCC with the concentration of HCO3 increasing from 0.15 to 1.00 mol/L, and the susceptibility can be evaluated in terms of current density at -0.2 V vs. SCE. The SCC behavior is controlled by the dissolution-based mechanism in these circumstances. Increasing the concentration of HCO3 not only increases the risk of rupture of passive films but also promotes the anodic dissolution of crack tips. Besides, little susceptibility to SCC is found in dilute solution containing 0.05 mol/L HCO3 for X80 steel. This can be attributed to the inhibited repassivation of passive films, manifesting as a more intensive dissolution in the non-crack tip areas than at the crack tips.

关键词： pipeline steel stress corrosion cracking bicarbonate passive films

Syntheses,Crystal Structures and Luminescent Properties of Three New Gallium Complexes Containing Pyridine-2,6-dicarboxylic Acid

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Chemical Research in Chinese Universities 2012年第6期28卷 936-941页

作者： ZHOU Guang-peng YANG Yu-lin fan Rui-qing Department of Chemistry Harbin Institute of Technology Harbin 150001 P. R. China

Three new gallium complexes formulated as [Ga（PDA）2 ][Ga（H2O）（PDA）（phen）]·4H2O（1）,[Ga（PDA） 2]·（H2IN）·2H2O（2） and [Ga（OH）（PDA）（H2O）] 2（3）（H2PDA=pyridine-2,6-dicarboxylic acid;phen=1,10-phenanthroline;HIN=isonicotinic acid） have been synthesized under hydrothermal *** the mixed-ligand system of complex 1,PDA2 and phen are connected to the central Ga 3＋ cation as tri-and bi-dentate ligands,*** complex 2,each Ga 3＋ cation is six-coordinated by two PDA 2 anions *** 3 shows a binuclear structure,with the bond distance of Ga1― Ga2 being 0.30061（3） *** 3D supramolecular structures of the three complexes are constructed via hydrogen bonds and aromatic π-π packing *** the three complexes exhibit intense blue emission at room temperature in the solid state,which are attributed to π＊-π transition centered on the ligands.

关键词： Gallium complex Crystal structure Luminescent property

Single Image Super-Resolution via Dynamic Lightweight Database with Local-Feature Based Interpolation

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Journal of Computer Science & Technology 2019年第3期34卷 537-549页

作者： Na Ding Ye-Peng Liu lin-Wei fan Cai-Ming Zhang School of Software Shandong UniversityJinan 250101China Shandong Co-Innovation Center of Future Intelligent Computing Yantai 264025China Digital Media Research Institute Shandong University of Finance and Economics Jinan 250061China

Single image super-resolution is devoted to generating a high-resolution image from a low-resolution one,which has been a research hotspot for its significant applications. A novel method that is totally based on the single input image itself is proposed in this paper. Firstly, a local-feature based interpolation method where both edge pixel property and location information are taken into consideration is presented to obtain a better initialization. Then, a dynamic lightweight database of self-examples is built with the aid of our in-depth study on self-similarity, from which adaptive linear regressions are learned to directly map the low-resolution patch into its high-resolution version. Furthermore, a gradually upscaling strategy accompanied by iterative optimization is employed to enhance the consistency at each *** without any external information, extensive experimental comparisons with state-of-the-art methods on standard benchmarks demonstrate the competitive performance of the proposed scheme in both visual effect and objective evaluation.

关键词： lightweight database linear regression local-feature interpolation super-resolution

Roles of Optineurin and Extracellular Vesicles in Glaucomatous Retinal Cell Loss

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Current Medical Science 2023年第2期43卷 367-375页

作者： Chao-ye DUAN Wan-lin fan Fei CHEN Department of Ophthalmology Renmin Hospital of Wuhan UniversityWuhan430060China Department of Ophthalmology University of CologneFaculty of Medicine and University Hospital CologneCologne50937Germany Department of Ophthalmology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430022China

Objective To explore the role of extracellular vesicles(EVs)in the pathogenesis of glaucoma caused by E50K *** A photoreceptor cell line,RGC-5,was transfected with empty plasmids and plasmids expressing wild-type(WT)optineurin(OPTN)or E50K OPTN to investigate the effects of OPTN glaucoma as well as to identify the role of EVs in glaucoma *** RGC-5 cells were also stimulated with glutamate,and their viability was evaluated using flow cytometry or CCK-8 *** were extracted,labeled with PKH-26,and added into the medium for normal RGC-5 culture,and the status of the cells was observed *** WT OPTN overexpression,E50K OPTN,and glutamate stimulation induced apoptosis of RGC-5 ***,when glutamate stimulation was used as an add-on treatment,the degree of apoptosis in WT OPTN-overexpressing RGC-5 cells was significantly lower than that in E50K OPTN-expressing and normal RGC-5 *** viability of normal RGC-5 cells was reduced when co-cultured with WT OPTN-overexpressing RGC-5 or E50K OPTN-overexpressing *** released by the latter two transfected lines similarly reduced normal RGC-5 *** Our results indicate that WT OPTN overexpression may lead to photoreceptor ***,overexpression also confers a degree of protection against high concentrations of extracellular ***,EVs released by transfected RGC-5 cells may regulate the cell *** findings may improve our understanding of the mechanisms of cell-cell interactions in pathological conditions,providing a basis for the use of EVs as novel targets for early diagnosis and treatment of glaucoma.

关键词： E50K mutation extracellular vesicles glaucoma optineurin RGC-5 photoreceptor cell line

金刚石磨粒纳米加工单晶碳化硅非连续表面机理研究

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金刚石与磨料磨具工程 2024年第1期44卷 92-100页

作者：王一凡唐文智何艳高兴军凡林宋淑媛辽宁石油化工大学机械工程学院辽宁抚顺113001

建立金刚石磨料纳米加工单晶碳化硅衬底的分子动力学模型,从矢量位移、切削力、晶体结构相变及缺陷等方面研究划痕对原子去除过程的影响以及划痕壁面的材料去除机理。结果表明:划痕区域原子的去除方法主要是剪切和挤压。划痕入口区壁面... 详细信息

建立金刚石磨料纳米加工单晶碳化硅衬底的分子动力学模型,从矢量位移、切削力、晶体结构相变及缺陷等方面研究划痕对原子去除过程的影响以及划痕壁面的材料去除机理。结果表明:划痕区域原子的去除方法主要是剪切和挤压。划痕入口区壁面变形为弹性和塑性混合变形,划痕出口区壁面变形主要为塑性变形,增加纳米加工深度能够提高原子的去除量。衬底表面存在的划痕使纳米加工过程中的切向和法向切削力均降低,最大差值分别为300和600 nN,划痕区域原子的缺失是切向力下降的主要原因。磨粒的剪切挤压作用使碳化硅原子的晶体结构发生了非晶转化,产生了大量不具有完整晶格的原子,并且衬底表层的原子与临近的原子成键,形成稳定的结构。衬底温度受影响的区域主要集中在磨粒的下方,并向衬底的深处传递,在2、5和8?纳米加工深度下衬底温度之间的差值约为100 K。

关键词：纳米加工单晶碳化硅非连续表面位移矢量切削力相变

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Comparison of membrane fouling during short-term filtration of aerobic granular sludge and activated sludge

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Journal of Environmental Sciences 2007年第11期19卷 1281-1286页

作者： ZHOU Jun YANG Feng-lin MENG fan-gang AN Peng WANG Di School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116024 China

Aerobic granular sludge was cultivated adopting internal-circulate sequencing batch airlift reactor. The contradistinctive experiment about short-term membrane fouling between aerobic granular sludge system and activated sludge system were investigated. The membrane foulants was also characterized by Fourier transform infrared （FTIR） spectroscopy technique. The results showed that the aerobic granular sludge had excellent denitrification ability; the removal efficiency of TN could reach 90%. The aerobic granular sludge could alleviate membrane fouling effectively. The steady membrane flux of aerobic granular sludge was twice as much as that of activated sludge system. In addition, it was found that the aerobic granular sludge could result in severe membrane pore-blocking, however, the activated sludge could cause severe cake fouling. The major components of the foulants were identified as comprising of proteins and polysaccharide materials.

关键词： membrane bioreactor membrane fouling pore-blocking cake layer resistance aerobic granular sludge

Crushing behaviors of buckling-induced metallic meta-lattice structures

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Defence Technology（防务技术） 2022年第8期18卷 1301-1310页

作者： Jian-hua Dong Yong-jun Wang Feng-nian Jin Hua-lin fan State Key Laboratory for Disaster Prevention&Mitigation of Explosion&Impact Army Engineering University of PLANanjing210007China Department of Civil Engineering Nanyang Institute of TechnologyNanyang473004China State Key Laboratory of Mechanics and Control of Mechanical Structures Nanjing University of Aeronautics and AstronauticsNanjing210016China

Thin-walled lattice materials can be applied as energy absorbers in protective structures of civil defense. In this paper, quasi-static in-plane crushing tests were carried out to investigate the crushing behavior and energy absorption of buckling induced meta-lattice structures (BIMSs) with different central angles made of plastic iron material DT3 and formed by wire cutting technique. Three crushing patterns were revealed and analyzed. The test results clearly show that the initial peak force (IPF), the crushing force efficiency (CFE), the specific energy absorption (SEA) and the mean crushing force (MCF) can be substantially improved by introducing buckling pattern into the straight-walled lattice structure. The MCF of the BIMS was consistently predicted based on the simplified super folding element (SSFE) and the flattening element.

关键词： Buckling induced meta-lattice structure (BIMS) Crushing force efficiency

Genetic Analysis of Distorted Segregation Ratio of Mating Types AmongBasidiospores in Lentinula edodes

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Agricultural Sciences in China 2008年第4期7卷 415-422页

作者： CHENG Shui-ming lin fan-xue College of Life Science and Engineering Huanggang Normal University Huanggang 438000 P.R.China State Key Laboratory of Agricultural Microbiology Institute of Applied Mycology Huazhong Agricultural University Wuhan 430070 P. R. China

This study prepared 17 strains of Lentinula edodes, including wild and cultivated strains as materials, and statistically analyzed the ratios of spores from different aspects via mating types＇ analysis and the OWE-SOJ technique. The results from this study first systematically identified skewed expected distribution of mating-type factors segregation in Lentinula edodes spores has commonly statistical meanings in wild and cultivated strains. Genetic analysis of positive and negative parental-recombined fruiting showed that the nuclear type of F1 progeny spores among those strains segregated through theoretical distribution mainly depended on the combined state of parental dikaryons, and the predominant spores were those with the mating type identical to the dikaryotic parent, indicating that the genetic basis of segregation distortion of spores is different from that of protoplast monokaryons in which the B factor takes predominant responsibility for that phenomenon, and it cooperates A factor with B factor to influence the ratio of spores.

关键词： mating-type factor basidiospore Lentinula edodes segregation distortion

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黄河流域中东部区域生态质量时空变化分析

地理空间信息 2024年第9期22卷 29-32页

作者：赵颖张睿范琳朱玉香青海省测绘质量监督检验中心青海西宁810001 青海省自然资源遥感中心青海西宁810000 河南测绘职业学院河南郑州451464

以1986—2021年Landsat TM/OLI卫星遥感影像为主要数据源,基于Google Earth Engine(GEE)遥感云计算平台,利用遥感生态指数(RSEI)分析了研究区生态环境质量的时空变化特征;并利用Theil-Sen结合Mann-Kendall检验来评估RSEI变化趋势的方向... 详细信息

以1986—2021年Landsat TM/OLI卫星遥感影像为主要数据源,基于Google Earth Engine(GEE)遥感云计算平台,利用遥感生态指数(RSEI)分析了研究区生态环境质量的时空变化特征;并利用Theil-Sen结合Mann-Kendall检验来评估RSEI变化趋势的方向和显著性。结果表明,近35 a来黄河流域中东部区域RSEI均值为0.48~0.62,每10 a增加0.024;在空间分布上四周高、中间低,RSEI低值区主要分布于中原城市群西部、中部和西南部地区,高值区主要分布于城市群南部、东北部等地区;研究期内大部分区域的RSEI值增加,其中显著增加区域面积占比为11.48%,显著减少区域面积占比仅为5.76%,不显著变化区域面积占比为33.16%。在黄河流域中东部的核心城区,由于城市扩张、城市建设用地增加和热岛效应的影响使得该部分区域生态环境质量变差和显著退化。

关键词： RSEI GEE 时空分布黄河流域中东部区域

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运用WOD模式推进水利高质量发展初探

中国水利 2024年第18期 14-18页

作者：吴浓娣樊霖刘定湘水利部发展研究中心北京100038

水安全保障导向型发展(WOD)模式作为创新型水利发展模式,为水安全保障项目投融资提供了一种可行路径,对推动水生态价值转换、促进区域产业经济高质量发展具有较大价值。基于XOD模式发展背景,指出XOD模式是满足不同现代发展需求的开发模... 详细信息

水安全保障导向型发展(WOD)模式作为创新型水利发展模式,为水安全保障项目投融资提供了一种可行路径,对推动水生态价值转换、促进区域产业经济高质量发展具有较大价值。基于XOD模式发展背景,指出XOD模式是满足不同现代发展需求的开发模式统称,WOD模式是XOD模式在水安全领域的具体运用,分析了WOD模式的概念内涵和重要意义,提出了WOD模式的逻辑框架。研究表明:运用WOD模式有助于改善水利财政保障资金不足、实现水生态产品价值,对推动新阶段水利高质量发展具有重要意义。当前运用WOD模式具备积极的政策环境、良好的基础条件、相关行业已开展探索实践等有利条件,但同时面临项目一体化设计要求高、土地联动开发存在一定风险因素、协调工作存在一定难度等制约因素。从理清实施路径、开展试点建设、深化政策改革、强化理论研究等方面提出了推进WOD模式实施的对策建议。

关键词： WOD模式市场化融资水利创新发展高质量发展

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