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Journal of Environmental Sciences 2007年第1期19卷 80-85页

作者： hu Hai XIAO Wen-jun YUAN jian SHI jian-wei CHEN Ming-xia SHANG GUAN Wen-feng Research Center for Combustion and Environment Technology Shanghai Jiao Tong University. Shanghai 200030 China

Anatase TiO2 films were successfully prepared on foam nickel substrates by sol-gel technique using tetrabutyl titanate as precursor. The characteristics of the TiO2 films were investigated by XPS, XRD, FE-SEM, TEM and UV-Vis absorption spectra. The photocatalytic activities of TiO2 films were investigated by photocatalytic degradation reactions of gaseous acetaldehyde, an indoor pollutant, under ultraviolet light irradiation. It was found that Ni^2＋ doping into TiO2 films due to the foam nickel substrates resulted in the extension of absorption edges of TiO2 films from UV region to visible light region. The pre-heating for foam nickel substrates resulted in the formation of NiO layer, which prevented effectively the injection of photogenerated electrons from TiO2 films to metal nickel. The TiO2 films displayed high photocatalytic activity for the degradation of acetaldehyde, and were enhanced by calcining the substrates and coating TiO2 films repeatedly. The high activity was mainly attributed to the improvement of the characteristics of substrate surface and the increase of active sites on photocatalyst.

关键词： photocatalyst TiO2 films foam nickel sol-gel acetaldehyde degradation

Incoherent scatter radar (ISR) observations of high-frequency enhanced ion and plasma lines induced by X/O mode pumping around the critical altitude

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Earth and Planetary Physics 2022年第4期6卷 305-312页

作者： jun Wu jian Wu IHaggstrom Tong Xu ZhengWen Xu YanLi hu National Key Laboratory of Electromagnetic Environment China Research Institute of Radio Wave PropagationBeijing 102206China European Incoherent Scatter Scientific Association(EISCAT) KirunaSE-98192Sweden

Analysis of Incoherent Scatter Radar(ISR)data collected during an experiment involving alternating O/X mode pumping reveals that the high-frequency enhanced ion line(HFIL)and plasma line(HFPL)did not appear immediately after the onset of pumping,but were delayed by a few *** examining the initial behaviors of the ion line,plasma line,and electron temperature,as well as ionosphere conditions,we find that(1)the HFIL and HFPL were delayed not only in the X mode pumping but also in the O mode pumping and(2)the HFIL was not observed prior to enhancement of the electron *** analysis suggests that(1)leakage of the X mode to the O mode pumping may not be ignored and(2)spatiotemporal uncertainties and spatiotemporal variations in the profiles of ion mass and electron density may have played important roles in the apparent failure of the Bragg condition to apply;(3)nevertheless,the absence of parametric decay instability(PDI)cannot be ruled out,due to our inability to match conditions caused by the spatiotemporal uncertainties.

关键词： Incoherent Scatter Radar(ISR) ion line plasma line active ionosphere X/O mode

Node dynamic relaxation method： principle and application

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Frontiers of Materials Science 2011年第2期5卷 179-195页

作者： Hong-Yuan FANG Tao WANG jun-Feng hu jian-Guo YANG State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China

Two main methods, inactive eiement method and quiet element method, to simulate the process of multilayer ：and multipass welding：were reviewed, and the shortcomings of both methods were diScussed as well Based on these analyses, a method called node dynamic relaxation method was put into forward to simulate the multilayer and multipass welding process, and the principle and application of this method were discussed in detail. The simulating results show that using the node dynamic relaxation method can decrease mesh distortion, improve calculation efficiency, and obtain good simulation results. This method can also be used in the field of simulation addition or removing materials in finite element analysis.

关键词： inactive element methodl quiet element methodl node dynamic relaxation method multilayer and multipass Welding finite element analysis (FEA)

Convolution Kernels Implementation of Cardinalized Probability Hypothesis Density Filter

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Acta Mathematicae Applicatae Sinica 2013年第4期29卷 739-748页

作者： Yue MA jian-zhang Zhu Qian-qing QIN Yi-jun hu School of Mathematics and Information Sciences North China University of Water Resources and Electric Power School of Mathematics and Statistics Wuhan University State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan University

The probability hypothesis density （PHD） propagates the posterior intensity in place of the poste- rior probability density of the multi-target state. The cardinalized PHD （CPHD） recursion is a generalization of PHD recursion, which jointly propagates the posterior intensity function and posterior cardinality distribution. A number of sequential Monte Carlo （SMC） implementations of PHD and CPHD filters （also known as SMC- PHD and SMC-CPHD filters, respectively） for general non-linear non-Gaussian models have been proposed. However, these approaches encounter the limitations when the observation variable is analytically unknown or the observation noise is null or too small. In this paper, we propose a convolution kernel approach in the SMC-CPHD filter. The simuIation results show the performance of the proposed filter on several simulated case studies when compared to the SMC-CPHD filter.

关键词： random finite set (RFS) probability hypothesis density (PHD) filter cardinalized probability hypothesis density (CPHD) filter convolution kernel

Establishment and identification of induced pluripotent stem cells in liver cancer patients

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Asian Pacific Journal of Tropical Medicine 2014年第4期7卷 253-256页

作者： Da-Ming Zhang jian-jun Li Peng Yan jian-Ting hu Department of Laparoscopic Surgery People's Hospital of Zhengzhou

Objective:To induce pluripotent stem(IPS)cells from fibrocytes that are separated from liver cancer ***:The fibrocytes were reprogrammed to IPS cells by lentiviral vector,stained and identified by ***:The IPS cells were successfully established from fibrocytes after infection,and IPS cell clones formed in round shape under a *** induction rate was 0.013%±0.007%.No tumor formed at the back of nude mice within 8 weeks after the inoculation of cell ***,tetatoma appeared in nude mice within 1 week after IPS inoculation.A few tumors formed in nude mice within 4 weeks after the inoculation of cell ***,subcutaneous tumors formed within 1 week after IPS *** induced IPS cells showed three germ layers in *** and OCT4 in the induced IPS cells showed ***-A,TRA-1-6-,TRA-1-81 and Nanog were highly expressed in the induced IPS cells,indicating the IPS cells possessed the similar ability as the stem ***:The IPS cells of liver cancer patients can be established effectively from fibrocytes and can be cultured stably in vitro,which provides an approach for the treatment of intermediate or advanced stage liver cancer.

关键词： Fibrocyte Liver cancer Induced pluripotent stem cells Establishment

Partitioning of heavy metals in the surface sediments of Quanzhou Bay wetland and its availability to Suaeda australis

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Journal of Environmental Sciences 2006年第2期18卷 334-340页

作者： LI Yu-hong YAN Chong-ling YUAN jian-jun LIU Jing-chun CHEN huai-yu hu jun School of Life Sciences Xiamen University Xiamen 361005 China State Key Laboratory of Marine Environmental Science Xiamen University Xiamen 361005 China iology Department of Quanzhou Normal College Quanzhou 362000 China

In order to investigate distributions of heavy metal pollution in Quanzhou Bay wetland, the total concentration and chemical partitioning of a number of heavy metals （Cu, Zn, Cd, Pb, Cr, Hg） in sediments of three sampling sites of Quanzhou Bay wetland and their availability to Suaeda australis were analyzed. The Geoaccumulation Index （Igeo） values reveal that the sediments of three sampling sites may all be considered as moderately contaminated for Pb and Zn, and all sediments might be strongly contaminated with cadmium. The partitioning analyses revealed the measured heavy metals in three sites are bound to the exchangeable fraction at lower concentrations. The measured metals in a considerable amount are bound to the reducible and oxidizable fractions, and a high proportion of the measured heavy metals were distributed in the residual fraction in the sediment samples. The concentrations of Cd in each chemical phase extracted from the sediments are above natural global background levels and should be further investigated because of its toxicity. Suaeda australis has different accumulation abilities for the measured heavy metals. For the root and stem, the bioaccumulation ability assessed by bioaccumulation factor （BAF） for the measured heavy metals follows the decreasing order as： Cu〉Cr〉 Zn〉Cd, Pb, Hg. In the leaf, stronger bioaccumulation ability for Hg is exhibited. The heavy metal concentrations in Suaeda australis roots have positive correlations with their available fractions, while the exchangeable fraction of Cu and Cd might have be more important to both mature plant roots and seedling roots uptake than other fractions; as for Cr, the oxidizable fraction might make a greater contribution to the plant root uptake; as for Zn, the reducible fraction might make so contribution ; and for Pb, the oxidizable fraction might make a significant contribution to the mature plant root uptake, however, the exchangeable fraction might have a significant contribution to th

关键词： bioavailability geoaccumulation factor partitioning heavy metals Suaeda australis sediment Quanzhou Bay wetland

Microstructure and properties of electroformed nickel under different waveform conditions

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Rare Metals 2023年第1期42卷 320-326页

作者： Jing Li jian-Gang Qian Xiao-Tian hu Tie-jun Li Hai-Ting Li School of Chemistry and Environment Beihang UniversityBeijing100191China

In order to prepare electroformed nickel with excellent properties,the effect of different waveforms on microstructure and mechanical properties was investigated by optical microscopy(OM),X-ray diffraction(XRD) and tensile test,*** results show that the samples are composed of micron columnar grains with high-density nanoscale coherent twin boundaries which are parallel to the growth *** tensile strength and elongation display opposite tendency with the increase in current density when direct current(DC) electroforming was ***,under the condition of pulse current(unidirectional,bidirectional) electroforming,the change regulation of tensile strength and elongation is close while cathode(peak,positive peak) current density *** results show that electroformed nickel layers with high purity are all fcc crystal configuration under different conditions of the current *** nickel layers formed under bidirectional pulse current behave superior global performance with tensile strength of 692.0 MPa and elongation of 27.6 %.

关键词： Current waveform Electroformed nickel Organization Mechanical properties

Multidimensional amphibian diversity and community structure along a 2600 m elevational gradient on the eastern margin of the Qinghai-Tibetan Plateau

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Zoological Research 2022年第1期43卷 40-51页

作者： Xiao-Yi Wang Mao-jun Zhong jian Zhang Xing-Feng Si Sheng-Nan Yang jian-Ping jiang jun-hua hu Chengdu Institute of Biology Chinese Academy of SciencesChengduSichuan 610041China Key Laboratory of Bio-Resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengduSichuan 610065China Zhejiang Tiantong Forest Ecosystem National Observation and Research Station School of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China University of Chinese Academy of Sciences Beijing 100049China

Mountain systems harbor an evolutionarily unique and exceptionally rich biodiversity,especially for ***,the associated elevational gradients and underlying mechanisms of amphibian diversity in most mountain systems remain poorly ***,we explored amphibian phylogenetic and functional diversity along a 2600 m elevational gradient on Mount Emei on the eastern margin of the Qinghai-Tibetan Plateau in southwestern *** also assessed the relative importance of spatial(area)and environmental factors(temperature,precipitation,solar radiation,normalized difference vegetation index,and potential evapotranspiration)in shaping amphibian distribution and community *** showed that the phylogenetic and functional diversities were unimodal with elevation,while the standardized effect size of phylogenetic and functional diversity increased linearly with *** net relatedness,nearest taxon index,and functional net relatedness index all showed a positive to negative trend with elevation,indicating a shift from clustering to overdispersion and suggesting a potential change in key processes from environmental filtering to competitive ***,our results illustrate the importance of deterministic processes in structuring amphibian communities in subtropical mountains,with the dominant role potentially switching with *** study provides insights into the underlying assembly mechanisms of mountain amphibians,integrating multidimensional diversity.

关键词： Community structure Elevational gradient Environmental filtering Functional and phylogenetic diversity Mountain systems

Structural designs and mechanism insights into electrocatalytic oxidation of 5-hydroxymethylfurfural

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Journal of Energy Chemistry 2025年第1期 792-814页

作者： Jing Lei huijie Zhang jian Yang Jia Ran Jiqiang Ning Haiyan Wang Yong hu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Department of Chemistry Zhejiang Normal University Jinhua Advanced Research Institute Department of Optical Science and Engineering Fudan University College of Chemistry and Materials Engineering Zhejiang A&F University

Biomass conversion offers an efficient approach to alleviate the energy and environmental *** oxidation of 5-hydroxymethylfurfural(HMF) has attracted tremendous attention in the latest few years for the mild synthesis conditions and high conversion efficiency to obtain 2,5-furan dicarboxylic acid(FDCA), but there still remain problems such as limited yield, short cycle life,and ambiguous reaction mechanism. Despite many reviews highlighting a variety of electrocatalysts for electrochemical oxidation of HMF, a detailed discussion of the structural modulation of catalyst and the underlying catalytic mechanism is still lacking. We herein provide a comprehensive summary of the recent development of electrochemical oxidation of HMF to FDCA, particularly focusing on the mechanism studies as well as the advanced strategies developed to regulate the structure and optimize the performance of the electrocatalysts, including heterointerface construction, defect engineering,single-atom engineering, and in situ reconstruction. Experimental characterization techniques and theoretical calculation methods for mechanism and active site studies are elaborated, and challenges and future directions of electrochemical oxidation of HMF are also prospected. This review will provide guidance for designing advanced catalysts and deepening the understanding of the reaction mechanism beneath electrochemical oxidation of HMF to FDCA.

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平肝潜阳药物对偏头痛肝阳上亢证患者的临床疗效及其对血淋巴细胞蛋白质表达的影响

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中西医结合学报 2009年第1期7卷 25-33页

作者：钟广伟李炜罗艳红陈国林易振佳胡建军张莺尹耀慧张乐中南大学湘雅医院中西医结合研究所湖南长沙410008 中南大学湘雅医院急诊科湖南长沙410008 中南大学湘雅医院神经内科湖南长沙410008

目的:观察平肝潜阳药物对偏头痛肝阳上亢证患者的临床疗效和对血淋巴细胞蛋白质表达的影响,为深入研究偏头痛肝阳上亢证病理生理机制及平肝潜阳法治疗作用的分子机制奠定基础。方法:32例偏头痛肝阳上亢证患者随机分为治疗组和对照组。... 详细信息

目的:观察平肝潜阳药物对偏头痛肝阳上亢证患者的临床疗效和对血淋巴细胞蛋白质表达的影响,为深入研究偏头痛肝阳上亢证病理生理机制及平肝潜阳法治疗作用的分子机制奠定基础。方法:32例偏头痛肝阳上亢证患者随机分为治疗组和对照组。治疗组口服平肝潜阳方,对照组口服氟桂利嗪片剂。治疗2个疗程。观察患者治疗前后的中医症状积分、止痛疗效和不良反应;采用双向凝胶电泳、基质辅助激光解吸电离-飞行时间质谱法分离和鉴定偏头痛患者外周血淋巴细胞和正常人之间差异蛋白表达,并观察应用平肝潜阳方干预后,各组差异蛋白质表达水平的变化。结果:平肝潜阳方有明显止痛效果(87.5%),与氟桂利嗪片(75.0%)比较,差异有统计学意义(P<0.01);以改善眩晕、烦躁易怒和面部烘热症状更为明显(P<0.05)。两组中医症状积分均降低(P<0.01),其中以治疗组更为明显(P<0.01),治疗组未出现明显不良反应。正常人、平肝潜阳方治疗组偏头痛肝阳上亢证患者治疗前和治疗后血淋巴细胞凝胶蛋白质点数依次为534±42、552±54和529±55。平肝潜阳方治疗组偏头痛肝阳上亢证患者与正常人比较有6个蛋白质表达下调,14个蛋白质表达上调;平肝潜阳方治疗组偏头痛肝阳上亢证患者治疗前后比较发现表达下调的6个蛋白质中有4个表达增强,而表达上调的14个蛋白质中有11个表达降低。共得到12个肽质量指纹图谱,2个无质谱结果,搜索到10个具有统计学意义的蛋白质,主要有通道蛋白、抗氧化蛋白、细胞信号转导蛋白、代谢相关蛋白和免疫相关蛋白等。结论:平肝潜阳中药复方有良好的止痛作用,能改善中医症状;可能通过调节部分血淋巴细胞蛋白质的表达治疗偏头痛肝阳上亢证。

关键词：平肝潜阳肝阳上亢蛋白质组学偏头痛随机对照试验