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Acta Metallurgica Sinica(English Letters) 2013年第6期26卷 681-686页

作者： Rongchang ZENG lijun liu Shuoqi LI Yuhong ZOU Fen ZHANG Yanan YANG Hongzhi CUI En-hou HAN College of Material Science and Engineering Shandong University of Science and Technology College of Chemical and Environmental Engineering Shandong University of Science and Technology State Key laboratory for Corrosion and Protection Institute of Metals ResearchChinese Academy of Sciences

Contamination resulting from microbial adhesion on magnesium alloys is very common in many applications. Self-assembly technology was employed to prepare an antibacterial composite coating by fixing silver nanoparticles （AgNPs） onto the surface of magnesium alloys. The AgNPs were immobilized on the surface of 3-aminopropyltrimethoxysilane （APTMS）-modified magnesium alloy AZ31 （APTMS/Mg） through electrosta- tic inter-attraction between partially protonated amino groups and negatively charged citrate-capped AgNPs, resulting in the AgNPs attached APTMS/Mg （AgNPs/APTMS/Mg） substrate. The prepared Ag colloid and functionalized AZ31 alloy were characterized by ultraviolet-visible （UV-vis） spectroscopy, Fourier transform infrared （FTIR） spectroscopy, scanning electron microscopy （SEM）, and electrochemical methods. Finally, the bactericidal activity of AgNPs/APTMS/Mg substrate against Escherichia coli was assessed by the inhibition zone. The results demonstrated that Si-O-Si covalent bonds existed on the substrate with the formation of inorganic Si-O-Mg bonds. AgNPs were immobilized and well-dispersed, forming a uniform submonolayer on the silane film in two dimensions. The AgNPs/APTMS-pretreated AZ31 alloys exhibited better corrosion resistance and excellent antibacterial performance.

关键词： Magnesium alloy Nanoparticles Self-assembly Corrosion Antibacterial effect

Unsteadiness of COD in the Upper and Middle Reaches of Minjiang River

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Chinese Journal of Population,Resources and Environment 2010年第4期8卷 65-68页

作者： liu Zuhan Zhang Bin Wang Lili Qin Fachao liu lijun Land and Resources College China West Normal UniversityNanchong Sichuan 637009China Information Management College Chengdu University of TechnologyChengdu Sichuan 610059China

This paper explores and identifies the rules of the unsteady evolution of COD in the upper and middle reaches of Minjiang River through multi-scale analysis on the weekly COD data for the last six years provided by the Water Quality Monitoring Station,Minjiang River Bridge,Leshan City,Sichuan *** results of the wavelet analysis indicate that the COD index oscillates alternatively and differently at each time-scale in an oneyear cycle,and the density of COD,subjected to the runoff volume,the effects of Wenchuan Earthquake and agricultural seeding and industrial construction,etc.,is high in winter and spring,mild in summer and autumn.

关键词： wavelet analysis COD the upper and middle reaches of the Minjiang River

Review on the NO removal from flue gas by oxidation methods

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Journal of Environmental Sciences 2021年第3期33卷 49-71页

作者： Meng Si Boxiong Shen George Adwek Lifu Xiong lijun liu Peng Yuan Hongpei Gao Cai Liang Qihai Guo Tianjin Key Laboratory of Clean Energy and Pollutant Control School of Energy and Environmental EngineeringHebei University of TechnologyTianjin 300401China Department of Energy and Environmental Engineering Mount Kenya UniversityThikaKenya China Huaneng Group Clean Energy Technology Research Institute Co.Ltd. Beijing 102209China Chengdu Dongfang KWH Environmental Protection Catalysts Co.Ltd. Chengdu 610042China TUS Environmental Science and Technology Development Co.Ltd. Yichang 443000China

Due to the increasingly strict emission standards of NOx on various industries,many traditional flue gas treatment methods have been gradually *** for selective catalytic reduction(SCR)and selective non-catalytic reduction(SNCR)methods to remove NOx from flue gas,theoxidation method is paying more attention to NOx removal now because of the potential to simultaneously remove multiple pollutants from flue *** paper summarizes the efficiency,reaction conditions,effect factors,and reaction mechanism of NO oxidation from the aspects of liquid-phase oxidation,gas-phase oxidation,plasma technology,and catalytic *** effects of free radicals and active components of catalysts on NO oxidation and the combination of various oxidation methods are discussed in *** advantages and disadvantages of different oxidation methods are summarized,and the suggestions for future research on NO oxidation are put forward at the *** review on the NO removal by oxidation methods can provide new ideas for future studies on the NO removal from flue gas.

关键词： Flue gas treatment NO oxidation Liquid-phase oxidation Gas-phase oxidation Catalytic oxidation

Method of extracting disturbed position in φ-OTDR based on signal relevance evaluation

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Optoelectronics Letters 2024年第9期20卷 513-517页

作者： LI Chengzhi YANG Yang liu lijun GAO Fei DU Xuan LIANG Hu Kunlun Digital Technology Co. Ltd.Beijing 102206China Tianjin Navigation Instruments Research Institute Tianjin 300131China

A theoretical analysis was conducted on the intrinsic bond between multi-point responses caused by the same single vibration in phase sensitive optical time-domain reflectometer(OTDR). Temporal similarity of signals collected from adjacent sample locations were investigated. Referring to correlation coefficient as well as the relative energy level, a method of extracting disturbed position in φ-OTDR based on signal relevance evaluation is proposed to perform fast screening of massive φ-OTDR raw data to pinpoint those signals with significance.

关键词： OTDR signal disturbed

Preparation and thermal stability on non-vacuum high temperature solar selective absorbing coatings

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Chinese Science Bulletin 2009年第8期54卷 1451-1454页

作者： HAO Lei WANG ShuMao JIANG lijun liu XiaoPeng LI HuaLing LI ZhiNian General Research Institute for Nonferrous Metals Beijing 100088 China

Spectrally selective TiAl/TiAlN/TiAlON/TiAlO coating was deposited on stainless steel and copper substrates using a multiarc ion plating *** structure,morphology,optical reflectance and electrical resistivity were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),spectrophotometer and four-point probe meter,*** results show that the coating exhibits high absorptance(―0.9) and low emittance(0.09―0.19).The coating remains stable in air up to 650℃ for *** properties are of extraordinary interest in solar thermal power generations and energy saving buildings.

关键词：选择性吸收涂层太阳能热电站热稳定性高压高温非真空扫描电子显微镜制备光谱选择性

A Preliminary Review of Metallogenic Regularity of Tungsten Deposits in China

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Acta Geologica Sinica(English Edition) 2015年第4期89卷 1359-1374页

作者： SHENG Jifu liu lijun WANG Denghong CHEN Zhenghui YING Lijuan HUANG Fan WANG Jiahuan ZENG Le Key Laboratory of Metallogeny and Mineral Resource Assessment Institute of Mineral ResourcesChinese Academy of Geological Sciences China University of Geosciences Changjiang University College of Earth Science Jilin University

Tungsten ore resources are abundant in China with relatively complete types of deposits. Skarn type and quartz vein type deposits are dominated in the tungsten resources, whereas quartz vein type wolframite deposits are most important in terms of exploitation and utilization. Skarn type tungsten deposits are concentratedly distributed in the central Nanling region, such as South Hunan, South Anhui and the eastern Qinling region, while quartz vein type tungsten deposits occur mainly in South China, such as West Fujian, South Jiangxi, North Guangdong and South Hunan. The most important metallogenic epoch of tungsten is the Mesozoic, while the metallogenic tectonic setting is featured by an intracontinental environment after orogeny with sever tectonic movements, deep-seated faults and frequent magmatic activities, especially Mesozoic granitoids closely related to tungsten-tin mineralization. 22 metallogenic series of ore deposits characterized by or significantly related to tungsten were defined based on precise statistic information of 1199 tungsten mining areas and thorough the summary of metallogenic regularities. Based on studies of the metallogenic regularity of tungsten deposits, skarn type （or greisen type）, quartz vein type and massif-type of tungsten deposits are thought to be the key prediction types. 65 tungsten-forming belts and 22 key ore concentration areas were ascertained and a distribution map of tungsten-forming belts of China was compiled, which provided a theoretical basis for evaluation and prediction of potential tungsten resources.

关键词： tungsten resources characteristics types of tungsten deposit tungsten-forming belt,metallogenic regularity

Effect of irrigation regime on grain yield,water productivity,and methane emissions in dry direct-seeded rice grown in raised beds with wheat straw incorporation

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The Crop Journal 2018年第5期6卷 495-508页

作者： Zhiqin Wang Daojian Gu Sarah S.Beebout Hao Zhang lijun liu Jianchang Yang Jianhua Zhang Jiangsu Key Laboratory of Crop Genetics and Physiology Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou University Crop and Environmental Sciences Division International Rice Research Institute (IRRI) Department of Biology Hong Kong Baptist University

Dry direct-seeded rice grown in raised beds is becoming an important practice in the wheat–rice rotation system in ***,little information has been available on the effect of various irrigation regimes on grain yield,water productivity(WP),nitrogen use efficiency(NUE),and greenhouse gas emission in this *** study investigated the question using two rice cultivars in 2015 and 2016 grown in soil with wheat straw incorporated into *** seeds were directly seeded into raised beds,which were maintained under aerobic conditions during the early seedling *** irrigation regimes:continuous flooding(CF),alternate wetting and drying(AWD),and furrow irrigation(FI),were applied from 4.5-leaf-stage to *** with CF,both AWD and FI significantly increased grain yield,WP,and internal NUE,with greater increases under the FI *** two cultivars showed the same tendency in both *** AWD and FI markedly increased soil redox potential,root and shoot biomass,root oxidation activity,leaf photosynthetic NUE,and harvest index and markedly decreased global warming potential,owing to substantial reduction in seasonalThe results demonstrate that adoption of either AWD or FI could increase grain yield and resource-use efficiency and reduce environmental risks in dry direct-seeded rice grown on raised beds with wheat straw incorporation in the wheat–rice rotation system.

关键词： Rice(Oryza sativa L.) Dry direct-seeding Alternate wetting and drying Furrow irrigation Water productivity Methane emission

Identifying eco-functional zones on the Chinese Loess Plateau using ecosystem service bundles

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Regional Sustainability 2023年第4期4卷 425-440页

作者： WU Fan LIANG Youjia liu lijun YIN Zhangcai HUANG Jiejun School of Resources and Environmental Engineering Wuhan University of TechnologyWuhan430070China College of Resources and Environment Yangtze UniversityWuhan430100China

Optimizing the function of ecosystem services(ESs)is vital for implementing regional ecological management *** this study,we used multi-source data and integrated modelling methods to assess the spatiotemporal variations in eight typical ESs on the Chinese Loess Plateau from 2000 to 2015,including grain production,raw material provision,water conservation,carbon storage service,soil conservation,oxygen production,recreation,and net primary productivity(NPP)***,we divided the ecosystem service bundles(ESBs)according to relationships among the eight ESs,obtaining four types of eco-functional areas at the county(city or banner or district)level based on the spatial clustering of similarities in different ES *** also identified and assessed the contributions of influencing factors to these eco-functional areas using principal component analysis(PCA)across spatiotemporal *** found that the spatiotemporal variations in different ESs were noticeable,with an overall increase in grain production and soil conservation services,no significant change in carbon storage service,and overall decreases in raw material provision,water conservation,oxygen production,recreation,and NPP *** 2000 to 2015,the number of significant synergistic ES pairs decreased,while that of significant trade-off pairs *** the changes of ESBs in the eco-functional areas,the results indicated that the indirect loss of these ESs from forest and grassland due to urban expansion should be reduced in ecological development area(ESB 2)and multi ecological functional area(ESB 3).Meanwhile,crop planting structures and planting densities should be adjusted to reduce ES trade-offs associated with water conservation service in grain-producing area(ESB 4).Lastly,ESB-based ecofunctional zoning can be used to improve ecological restoration management strategies and optimize ecological compensation schemes in ecologically fragile area(ESB 1).

关键词： Ecosystem services Trade-offs Synergy Land use/land cover Climate change Principal component analysis(PCA) Chinese Loess Plateau

Brassinosteroids function in spikelet differentiation and degeneration in rice

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Journal of Integrative Plant Biology 2019年第8期61卷 943-963页

作者： Weiyang Zhang Kuanyu Zhu Zhiqin Wang Hao Zhang Junfei Gu lijun liu Jianchang Yang Jianhua Zhang Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology Agricultural College of Yangzhou UniversityYangzhou 225009China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009China Department of Biology Hong Kong Baptist UniversityHong KongChina

Brassinosteroids(BRs) play crucial roles in many aspects of plant development. However, their function in spikelet differentiation and degeneration in rice(Oryza sativa L.) remains unclear. Here, we investigated the roles of these phytohormones in spikelet development in fieldgrown rice subjected to five different nitrogen(N)fertilization treatments during panicle differentiation. BR levels and expression of genes involved in BR biosynthesis and signal transduction were measured in spikelets. Pollen fertility and the number of differentiated spikelets were closely associated with 24-epicastasterone(24-epiCS) and 28-homobrassinolide(28-homoBL) levels in *** BR biosynthesis and signal transduction, in response to N treatment, enhanced spikelet differentiation, reduced spikelet degeneration, and increased grain yield. Increases in proton-pumping ATPase activity, ATPconcentration, energy charge, and antioxidant system(AOS) levels were consistent with 24-epiCS and28-homoBL concentrations. Exogenous application of 24-epiCS or 28-homoBL on young panicles induced a marked increase in endogenous 24-epiCS or 28-homoBL levels, energy charge, AOS levels, spikelet differentiation, and panicle weight. The opposite effects were observed following treatment with a BR biosynthesis inhibitor. Our findings indicate that, in rice, BRs mediate the effects of N fertilization on spikelet development and play a role in promoting spikelet development through increasing AOS levels and energy charge during panicle development.

关键词： biosynthesis energy charge consistent with

Germ cell transplantation in infertility mouse

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Chinese Science Bulletin 2008年第1期53卷 70-75页

作者： XIE XiaYang TENG Yong MA LiangHong liu lijun WANG Xiang SONG YingChing XU Ping Shanghai Laboratory Animal Center Chinese Academic of Sciences/National Rodent Laboratory Animal Resources Shanghai Branch Shanghai 201615 China Institute of Molecular Medicine and Genetics Medical College of Georgia and Xytex Research Inc. Augusta 30912 USA Show-How Bio-Tech Institute Beihai 536000 China Department of Urology Hospital affiliated to Ningxia Medical College Yinchuan 750004 China Department of Urology Huashan Hospital Fudan University Shanghai 200040 China

This work investigated the spermatogenesis in an infertility BALB/c-nu mouse model by reinfusing germline stem cells into seminiferous tubules. Donor germ cells were isolated from male FVB/NJ-GFP transgenic mice. Seminiferous tubule microinjection was applied to achieve intratubular germ cell transfer. The germ cells were injected into exposed testes of the infertility mice. We used green fluo-rescence and DNA analysis of donor cells from GFP transgenic mice as genetic marker. The natural mating and Southern blot methods were applied to analyze the effect of sperm cell transplantation and the sperm function after seminiferous tubule microinjection. The spermatogenesis was morphologi-cally observed from the seminiferous tubules in 41/60 (68.33%) of the injected recipient mice using allogeneic donor cells. In the colonized testes, matured spermatozoa were seen in the lumen of the seminiferous tubules. In this research, BALB/c-nu infertility mouse model, the recipient animal, was used to avoid immunological rejection of donor cells, and germ cell transplantation was applied to overcome infertility caused by busulfan treatment. These results demonstrate that this technique of germ cell transplantation is of great use. Germ cell transplantation could be potentially valuable to oncological patients.

关键词：老鼠不育症微注射胚芽移植