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Science China(Technological Sciences) 2021年第3期64卷 548-558页

作者： WANG Tao LIU XiQing MA ChangChang WEI MaoBin HUO PengWei yan yongsheng School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China Institute of Green Chemistry and Chemical Technology Jiangsu UniversityZhenjiang 212013China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013China Department of Chemistry Dongguk UniversitySeoul 04620Republic of Korea College of Physics Jilin Normal UniversitySiping 136000China

Non-biodegradable and toxic photocatalysts pose as secondary threats to the environmental *** this work,non-toxic biocomposites were prepared using natural bamboo cellulose fibers(CF),polyvinyl alcohols(PVAs),BiVO_(4),and carbon dots(CDs)from ***,their optical properties,chemical characterizations,and photocatalytic performances were *** novel BiVO_(4)(-)CF@CDs(-)PVA composites were prepared via the combined implementation of in situ and impregnation *** optical properties revealed that the CDs and fibers increased the range and intensity of light *** PVAs were used as the shield and dispersant to enhance stability because they have numerous chemical *** view of the various possible paths of electron migration,the enhanced photocatalytic activity of BiVO_(4)(-)CF@CDs(-)PVA composites for tetracycline degradation was observed under visible light *** origins of the structure,morphology,and optical mechanism in the enhancement of the photocatalytic ability of BiVO_(4)(-)CF@CDs(-)PVA composites were discussed and demonstrated.

关键词： biodegradable bamboo fibers polyvinyl alcohol carbon dots BiVO_(4) mechanism

Mobile robot path planning method combined improved artificial potential field with optimization algorithm

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High Technology Letters 2011年第2期17卷 160-165页

作者：赵杰 Yu Zhenzhong yan Jihong Gao yongsheng Chen Zhifeng State Key Laboratory of Robotics and System Harbin Institute of Technology Harbin 150080 P. R. China

To overcome the shortcomings of the traditional artificial potential field method in mobile robot path planning, an improved artificial potential field model （IAPFM） was established, then a new path planning method combining the IAPFM with optimization algorithm （trust region algorithm） is proposed. Attractive force between the robot and the target location, and repulsive force between the robot and the obstacles are both converted to the potential field intensity; and filled potential field is used to guide the robot to go out of the local minimum points ; on this basis, the effect of dynamic obstacles velocity and the robot＇s velocity is consid thers and the IAPFM is established, then both the expressions of the attractive potential field and the repulsive potential field are obtained. The trust region algorithm is used to search the minimum value of the sum of all the potential field inten- sities within the movement scope which the robot can arrive in a sampling period. Connecting of all the points which hare the minimum intensity in every sampling period constitutes the global optimization path. Experiment result shows that the method can meet the real-time requirement, and is able to execute the mobile robot path planning task effectively in the dynamic environment.

关键词： trust region optimization algorithm path planning artificial potential field mobile robot potential field intensity

Deep-water Riser Fatigue Monitoring Systems Based on Acoustic Telemetry

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Journal of Ocean University of China 2014年第6期13卷 951-956页

作者： LI Baojun WANG Haiyan SHEN Xiaohong yan yongsheng yanG Fuzhou HUA Fei School of Marine Science and Technology Northwestern Polytechnical University

Marine risers play a key role in the deep and ultra-deep water oil and gas production. The vortex-induced vibration （VIV） of marine risers constitutes an important problem in deep water oil exploration and production. VIV will result in high rates of structural failure of marine riser due to fatigue damage accumulation and diminishes the riser fatigue life. In-service monitoring or full scale testing is essential to improve our understanding of V1V response and enhance our ability to predict fatigue damage. One ma- rine riser fatigue acoustic telemetry scheme is proposed and an engineering prototype machine has been developed to monitor deep and ultra-deep water risers＇ fatigue and failure that can diminish the riser fatigue life and lead to economic losses and eco-catastrophe. Many breakthroughs and innovation have been achieved in the process of developing an engineering prototype machine. Sea trials were done on the 6th generation deep-water drilling platform HYSY-981 in the South China Sea. The inclination monitoring results show that the marine riser fatigue acoustic telemetry scheme is feasible and reliable and the engineering prototype machine meets the design criterion and can match the requirements of deep and ultra-deep water riser fatigue monitoring. The rich experience and field data gained in the sea trial which provide much technical support for optimization in the engineering prototype machine in the future.

关键词： marine riser fatigue monitoring engineering prototype machine underwater telemetry

Fabricated temperature sensitive photocatalyst of PNIPAM@ZnO/C for controllable photocatalytic activity

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Chinese Chemical Letters 2017年第12期28卷 2259-2262页

作者： Pengwei Huo Jinze Li Zhefei Ye Huiqin Wang Xinlin Liu Xiuying Li yongsheng yan Institute of Green Chemistry and Chemical Technology School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013China

PNIPAM@ZnO/C composite photocatalyst was prepared by cross-linking polymerization technology with N-isopropylacrylamide used as functional monomer, N,N＇-methylenebis （acrylamide） used as cross- linking agent, ammonium persulfate used as initiator, and 3-（trimethoxysilyl） propyl methacrylate used as surface modification reagent. The morphology, structure, electrochemical and photocatalytic properties of as-prepared samples were characterized via the serial tests. The temperature-response performances of PNIPAM@ZnO/C were evaluated by the photocatalytic degradation of tetracycline （TC） under different temperatures. The results show that the synthesized composite photocatalysts possess the excellent and switchable photocatalytic activity. The photocatalytic degradation activity of PNIPAM@ZnO/C is suppressed above the lower critical solution temperature （LCST）, and it is enhanced below the LCST.

关键词： Photocatalysis Temperature-response PNIPAM ZnO/CTC

Construction of vesicle CdSe nano-semiconductors photocatalysts with improved photocatalytic activity:Enhanced photo induced carriers separation efficiency and mechanism insight

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Journal of Environmental Sciences 2017年第10期29卷 98-107页

作者： Jiangsu Wen Changchang Ma Pengwei Huo Xinlin Liu Maobin Wei yang Liu Xin Yao Zhongfei Ma yongsheng yan School of the Environment and Safety Engineering Jiangsu University School of Chemistry and Chemical Engineering Jiangsu University School of Energy and Power Engineering Jiangsu University State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology

Visible-light-driven photocatalysis as a green technology has attracted a lot of attention due to its potential applications in environmental remediation. Vesicle Cd Se nano-semiconductor photocatalyst are successfully prepared by a gas template method and characterized by a variety of methods. The vesicle Cd Se nano-semiconductors display enhanced photocatalytic performance for the degradation of tetracycline hydrochloride, the photodegradation rate of78.824% was achieved by vesicle Cd Se, which exhibited an increase of 31.779% compared to granular Cd Se. Such an exceptional photocatalytic capability can be attributed to the unique structure of the vesicle Cd Se nano-semiconductor with enhanced light absorption ability and excellent carrier transport capability. Meanwhile, the large surface area of the vesicle Cd Se nano-semiconductor can increase the contact probability between catalyst and target and provide more surface-active centers. The photocatalytic mechanisms are analyzed by active species quenching. It indicates that h＋and UO2^-are the main active species which play a major role in catalyzing environmental toxic pollutants. Simultaneously, the vesicle Cd Se nano-semiconductor had high efficiency and stability.

关键词： Nano-semiconductor Vesicle CdSe Gas template Photocatalyst

Rapid Synthesis and Photoluminescence Properties of Eu-doped ZnO Nanoneedles via Facile Hydrothermal Method

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Chemical Research in Chinese Universities 2014年第4期30卷 538-542页

作者： LANG Jihui WANG Jiaying ZHANG Qi XU Songsong HAN Qiang ZHANG yan ZHAI Hongju CAO Jian yan yongsheng yanG Jinghai Scholl of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 P. R. China Institute of Condensed State Physics Key Laboratory of Functional Materials Physics and Chemistry Ministry of Education Jilin Normal University Siping 136000 P. R. China

Eu-doped ZnO nanoneedles with different doping concentrations were prepared via the facile hydrothermal *** crystal structure,morphology and photoluminescence property of the ZnO nanoneedles were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,X-ray photoelectron spectroscopy（XPS）,photoluminescence spectroscopy（PL） and Raman *** results show that the europium ions are incorporated into the crystal lattice of ZnO matrix in trivalent *** nanoneedles are 2-3 μm in length and 100 nm in the tip *** and Raman measurements indicate that higher Eu^3＋ doping concentration may destroy the crystallization of the nanoneedles and decrease the ratio of IUV/IDLE,which is mainly due to the more defects in the doped ZnO *** the characteristic red emissions of Eu^3＋ ions are found by the PL spectroscopy with the Eu^3＋doping concentration increasing,which are attributed to the ^5D0→^7F0,^5D0→^7F1 and ^5D0→^7F2 transitions.

关键词： ZnO nanoneedle Hydrothermal method Europium ion Crystal structure Photoluminescence property

Heterosis in root microbiota inhibits growth of soil-borne fungal pathogens in hybrid rice

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Journal of Integrative Plant Biology 2023年第4期65卷 1059-1076页

作者： Mengting Zhang Yinyue Wang Yuanyi Hu Huacai Wang Yawen Liu Bingran Zhao Jie Zhang Rongxiang Fang yongsheng yan State Key Laboratory of Plant Genomics Institute of Microbiologythe Chinese Academy of SciencesBeijing 100101China Innovation Academy for Seed Design the Chinese Academy of SciencesBeijing 100101China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterChangsha 410125China

In nature,plants are colonized by various microbes that play essential roles in their growth and *** is a natural genetic phenomenon whereby first-generation hybrids exhibit superior phenotypic performance relative to their *** remains unclear whether this concept can be extended to the“hybridization”of microbiota from two parents in their descendants and what benefits the hybrid microbiota might ***,we investigated the structure and function of the root microbiota from three hybrid rice varieties and their parents through amplicon sequencing analysis of bacterial 16S ribosomal DNA(rDNA)and fungal internal transcribed spacer(ITS)*** show that the bacterial and fungal root microbiota of the varieties are distinct from those of their parental lines and exhibit potential heterosis features in diversity and ***,the root bacterial microbiota of hybrid variety LYP9 protects rice against soil-borne fungal *** analysis of the protective capabilities of individual strains from a 30-member bacterial synthetic community derived from LYP9 roots indicated that community members have additive protective *** transcription profiling analyses suggested that LYP9 root bacterial microbiota activate rice reactive oxygen species production and cell wall biogenesis,contributing to heterosis for *** addition,we demonstrate that the protection conferred by the LYP9 root microbiota is transferable to neighboring plants,potentially explaining the observed hybrid-mediated superior effects of mixed *** findings suggest that some hybrids exhibit heterosis in their microbiota composition that promotes plant health,highlighting the potential for microbiota heterosis in breeding hybrid crops.

关键词： heterosis microbiota‐mediated protection rice root microbiota synthetic community

开库康-依西肯地区原生晕地球化学特征及找矿意义

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黑龙江科技大学学报 2024年第1期34卷 28-35页

作者：李向文刘涛王冠赵建华王键闫永生黑龙江科技大学矿业工程学院哈尔滨150022 中国地质调查局哈尔滨自然资源综合调查中心哈尔滨150086

为指导水系沉积物测量等化探异常的解释评价,分析成矿元素地球化学特征,评价主要地质单元含矿性,在开展1∶5万水系沉积物测量的同时系统采集了研究区内各地质单元原生晕样品,并对成矿元素进行了地球化学参数统计与对比研究。原生晕地球... 详细信息

为指导水系沉积物测量等化探异常的解释评价,分析成矿元素地球化学特征,评价主要地质单元含矿性,在开展1∶5万水系沉积物测量的同时系统采集了研究区内各地质单元原生晕样品,并对成矿元素进行了地球化学参数统计与对比研究。原生晕地球化学特征表明:区内以中低温热液成矿作用为主,找寻Au矿化或矿床希望较大,As、Sb等元素可作为指示元素;主要地质单元含矿性评价结果显示,研究区内上侏罗统二十二站组、下白垩统龙江组为区内成矿有利部位,主成矿元素为Au,Ag为伴生元素;水系与岩石样品对比分析表明,As、Sb、Mn、Mo 4种元素表现明显次生富集,Zn、Cu、Ti 3种元素明显贫化,在水系异常圈定时应适当提高、降低异常下限。

关键词：原生晕地球化学特征开库康-依西肯地区大兴安岭北部

STUDY ON THE DETERMINATION OF TRACE BISMUTH(III) BY THIN-LAYER RESIN PHASE SPECTROPHOTOMETRY

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Chinese Journal of Reactive Polymers 2003年第1期12卷 50-58页

作者： yan yongsheng LUXiaohua FU Chengguang Institute of Environmental Science and Engineering Huazhong University ofScience and Technology.Wuhan.430074 China Research Center of Physical and Chemical Analysis Hebei University.Baoding.071002 China

In this paper, a new thin-layer ion-exchange resin phase analytical method is introduced. It is based on that, the bismuthous cation can associate with iodic anions, so as to formed an anion complex [BiI4-] in a strong acidic environments. This anion complex can also exchanges with a weaker anions on the surface active site of anion exchange resin, so that a [R+] [BiI4-] solid phase binary associational system is produced. Owing to the solid system is a great many dispersive particulates, it can be pressed to a thin-layer by press tools of the so called 搕hin-layer resin phase?or 搑esin phase? and using this solid association system spectrophotometry for the determination of trace metals. So it can increase the analytical sensitivity. This association system exhibits maximum absorbance at 460nm, and obeys Beer抯 law over the concentration range 0.01ug/ml^1.20ug/ml of bismuthous(III). It has a molar absorptivity of 7.1×105 [L/mol穋m]. It indicated the resin phase spectrophotometry is a sensitive analytical method for trace bismuthous. It is 18 times higher than routine aqueous spectrophotometry. The relative standard deviations is 1.82% (n=6) for the measurements of 0.5ug/ml Bi(III). The detection limit of Bismuthous(III) is 1.4×10-8mol/L. The method has applied to the analysis Bi(III) in environmental water samples.

关键词： Thin-layer phase Spectrophotometry Trace bismuth (III) Determination

CATALYTIC WET PEROXIDE OXIDATION OF HYDROQUINONE WITH Co(II)/ACTIVE CARBON CATALYST LOADED IN STATIC BED

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Chinese Journal of Reactive Polymers 2008年第1期17卷 42-47页

作者： LI Chunxiang yan yongsheng XU Wanzhen School of Chemistry and Chemical Engineering Jiangsu University Zhenjiang 212013 China

Catalysts based on Co(II) supported on active carbon were prepared and loaded in static bed. The hydroquinone would be degraded completely after treated by Catalytic wet peroxide oxidation method with Co(II)/active carbon catalyst. After activate treatment, the active carbon was immerged in cobaltous nitrate solution, then put into a drying oven, Co(II) could be loaded on the micro-surface of carbon. Taking the static bed as the equipment, the absorption of active carbon and catalysis of Co(II) was used to reduce activation energy of hydroquinone. Thus hydroquinone could be drastically degraded and the effluent can be drained under the standard. Referring to Fenton reaction mechanism, experiment had been done to study the heterogeneous catalyzed oxidation mechanism of Co(II). The degradation rate of hydroquinone effluent could be achieved to 92% when treated in four columns at H2O2 concentration 10%, reaction temperature 40℃ , pH 5 and reaction time 2.5h.

关键词： Catalytic wet peroxide oxidation Hydroquinone Activate carbon Static bed.