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Campus Vibration in Nanwangshan Campus,China University of Geosciences at Wuhan Monitored by Short-Period Seismometers

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Journal of Earth Science 2020年第5期31卷 950-956页

作者： Lihui Wu Dun wang Ziguang Lei Jing fu Shuai Min Xianbing Xu Sarina bao School of Management Hubei University of EducationWuhan 430205China Institute of Supply Chain Operation and Service Innovation Hubei University of EducationWuhan 430205China State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan 430074China Department of Environmental Science and Policy University of CaliforniaCA 95616USA

Continuous seismic observations can record seismic waveforms, and ambient noise, for the purposes of earthquake researches and other applications. Here we deploy three digital seismometers(EPS-2) in and around the Nanwangshan Campus of the China University of Geosciences(Wuhan). This network was running from April 9 to May 9 of 2018. During this period, the seismometers recorded the May 4, 2018 M6.9 Hawaii earthquake. From the recorded waveforms, we could observe clearly the P and S arrivals, and the corresponding particle motions. Analysis of continuous observations of ambient noise shows obvious fluctuation of vibration intensity inside of the campus. The campus is quietest from 0 to 5 am. From 5 am on, the vibration intensity increases, and reaches the peak of entire day at 12 am. The amplitude then decreases to a very low level at 19:30 to 20:00 pm, and reaches another strong noisy time at 21:00 to 21:30 pm. After 21:30 pm, the intensity goes down slowly. We also observed seismic signals that were generated by the interaction of speed-control hump cars and ground. By taking the envelope and smooth operations, we observe different characteristics for different car speeds, which suggests that seismic monitoring approaches can be used for speed measurement of cars. This kind of small seismic network running in a real time fashion, would greatly help understanding of the sources of ambient noise at high frequency bands in interested areas. Analysis of a long-term observed dataset, and real time illustration will help to strengthen campus security and high-precision laboratory deployments, and also contribute to research atmosphere in earthquake science.

关键词： ambient noise vibration intensity seismic waves seismometers human activity

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Phosphorus sorption capacities in a headstream landscape—The pond chain structure

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Journal of Environmental Sciences 2006年第5期18卷 1004-1011页

作者： fu Qiang YIN Cheng-qing SHAN bao-qing State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China

Understanding phosphorus sorption phenomena in different wetland sediments is important in controlling the P output in headstream watersheds. The pond chain structure （PCS） is widespread in the headstream agricultural watersheds in the southeast of China. Phosphorus sorption characteristics were determined for pond surface sediments （0-12 cm） along a pond chain structure in Liuchahe watershed of Chaohu Lake. Results showed that P sorption capacities （expressed by P sorption index （PSI）） varied both with the landscape position of the ponds and sediment depth. From foothill ponds to riverside ponds the P sorption capacities indicated a significant gradient variability. The higher elevation ponds showed greater sorption capacities, and with the pond elevation decline, P sorption capacities gradually decreased. Some physico-chemical properties, such as pH, oxalate-extractable Fe （Feox）, organic matter （TOC） and Mehlich l-extractable Ca, Mg of pond sediments also indicated significant gradient variability from high elevation ponds to low elevation ponds. Feox was the sediment parameters most highly positively correlated with PSI and was the key factor in controlling P sorption capacity in the pond chain structure （r=0.92, p〈0.001）. Long-term hydrologic and sediment inputs can affect the distribution of sediment constituents and further affect the P sorption capacity. Making the best of the spatial difference of sorption capacities of ponds in watersheds to control nonpoint source P pollutant is necessary.

关键词： pond sediment adsorption spatial variability nonpoint source

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Identification and Fibrinolytic Evaluation of an Isoindolone Derivative Isolated from a Rare Marine fungus Stachybotrys Iongispora FG216

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Chinese Journal of Chemistry 2015年第9期33卷 1089-1095页

作者： Ge wang Wenhui Wu Quangang Zhu Shiqing fu Xiaoyu wang Shaotong Hong Ruihua Guo Bin bao College of Food Science and Technology Shanghai Ocean University Shanghai 201306 China Institute of Marine Science Shanghai Ocean University Shanghai 201306 China Department of Chinese Pharmacy Yueyang Hospital of Integrated Chinese and Western Medicine Shanghai University of Traditional Chinese Medicine Shanghai 200437 China Shanghai Engineering Research Center of Aquatic-Product Processing andPreservation Shanghai 201306 China

An isoindolone derivative, fungi fibrinolytic compound （R）-2,5-bis（（2R,3R）-2-（（E）-4,8-dimethylnona-3,7-dien- 1-y1）-3,5-dihydroxy-2-methy--7-oxo-3,4,7,9-tetrahydr pyrano[2,3-e]isoindol-8（2H）-yl）pentanoic acid （FGFC1, fungi fibrinolytic compound 1）, was isolated from a rare marine microorganism strain Stachybotrys longispora FG216. The structure of FGFC1 was elucidated by 1H NMR, 13C NMR, IR, and MS data; moreover, it was also evaluated for fibrinolytic activity in vitro and in vivo. The results showed that 0.1--0.4 mmol/L of FGFC1 could stimulate generation of plasmin activity （increased by 2.05--11.44 folds） by measuring Glu-plasminogen and Lys-plasminogen activation in vitro. The experiment of fluorescein isothiocyanate （FITC）-fibrinogen degradation indicated that the effect of FGFCI on fibrinolytic activity was mediated by plasminogen and scuPA. In addition, FGFC 1 （10 mg/kg） could dissolve most of pulmonary thrombus of Wistar rat in vivo. It is possible that FGFC 1 is a potential thrombolytic agent in the future.

关键词： Stachybotrys longispora FG216 marine microorganism plasmin activity fibrinolytic activity

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Covalent electron density analysis and surface energy calculation of gold with the empirical electron surface model

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International Journal of Minerals,Metallurgy and Materials 2011年第6期18卷 676-682页

作者： bao-qin fu Zhi-lin Li Wei Liu College of Materials Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Laboratory of Advanced Materials Department of Material Science and Engineering Tsinghua University Beijing 100084 China

Based on the empirical electron surface model （EESM）,the covalent electron density of dangling bonds （CEDDB） was calculated for various crystal planes of gold,and the surface energy was calculated *** results show that CEDDB has a great influence on the surface energy of various index surfaces and the anisotropy of the *** calculated surface energy is in agreement with experimental and other theoretical *** calculated surface energy of the close-packed （111） surface has the lowest surface energy,which agrees with the theoretical ***,it is found that the spatial distribution of covalent bonds has a great influence on the surface energy of various index ***,CEDDB should be a suitable parameter to describe and quantify the dangling bonds and surface energy of various crystal surfaces.

关键词： surface energy dangling bonds covalent bonds electron density gold

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Intercalation-etching of graphene on Pt(111) in H_2 and O_2 observed by in-situ low energy electron microscopy

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Science China Chemistry 2017年第5期60卷 656-662页

作者： Wei Wei Caixia Meng Qiang fu Xinhe bao Department of Chemical Physics University of Science and Technology of China State Key Laboratory of Catalysis iChEM Dalian Institute of Chemical Physics the Chinese Academy of Sciences

Graphene layers are often exposed to gaseous environments in their synthesis and application processes, and interactions of graphene surfaces with molecules particularly H2 and O2 are of great importance in their physico-chemical properties. In this work, etching of graphene overlayers on Pt（111） in H2 and O2 atmospheres were investigated by in-situ low energy electron microscopy. Significant graphene etching was observed in 10-5 Torr H2 above 1O23 K, which occurs simultaneously at graphene island edges and interiors with a determined reaction barrier at 5.7 eV. The similar etching phenomena were found in 10 7 Torr O2 above 973 K, while only island edges were reacted between 823 and 923 K. We suggest that etching of graphene edges is facilitated by Pt-aided hydrogenation or oxidation of edge carbon atoms while intercalation-etching is attributed to etching at the interiors at high temperatures. The different findings with etching in O2 and H2 depend on competitive adsorption, desorption, and diffusion processes of O and H atoms on Pt surface, as well as intercalation at the graphene/Pt interface.

关键词： graphene etching intercalation LEEM oxidation hydrogenation

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Dietary valine requirement of juvenile grass carp(Ctenopharyngodon idella)

Dietary valine requirement of juvenile grass carp(Ctenophary...

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中国南方十六省（市、区）水产学会渔业学术论坛第二十六次学术交流大会

作者： Li Luo~a,Ya-ge wang~a,Hua Wen~(b,c),fu-bao wang~a,Shi Chen~a a Department of Fishery Science,college of Animal Science and Technology of Southwest University, Chongqing,China,400716 b.Key Laboratory of Freshwater Fish Germplasm and Biotechnology,Ministry of Agriculture, Yangtze River Fisheries Research Institute,Chinese Academy of Fishery Sciences,Jingzhou 434000, China c Freshwater Fishery Research Center,Chinese Academy of Fishery Sciences,Wuxi 214081,China)

A 70-day feeding trial was conducted to estimate the optimum requirement of dietary valine for juvenile grass carp in fresh water cages(1.0×1.0×1.0 m) using six isonitrogenous(32% protein) with Peanut meal-casein-gelatin as protein resource supplemented with six graded levels of coated valine(from 0.73%to 2.23%of dry diet).Coated amino acid mixtures were supplemented to simulate the amino acid pattern found in the whole-body protein of grass carp except for *** diet was randomly assigned to triplicate groups of 20 fish each(9.50±0.3 g,mean±S.E.M.) and fish were fed three times daily at 3%body weight per *** results showed that weight gain(WG),specific growth rate(SGR),protein efficiency ratio(PER),body composition,RNA/DNA in muscle,digestive enzyme activity,AST、ALT and GDH activity in liver and hematology were all significantly(P <0.05) affected by the dietary valine ***,SGR,PER and RNA/DNA significantly increased with increasing valine level from 0.73 to 1.63%of diet(P <0.05),and then leveled ***-line analysis based on WG,SGR,PER and RNA/DNA indicated the optimum requirements of grass carp for dietary valine were 1.63,1.63,1.60 and 1.65%of diet(5.09,5.09,5.00 and 5.16%of dietary protein), respectively.

关键词： Grass carp Ctenopharyngodon idella Requirement Valine

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Thermal cycling behavior of nanostructured and conventional yttria-stabilized zirconia thermal barrier coatings via air plasma spray

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Rare Metals 2023年第11期42卷 3859-3869页

作者： Cheng-Yang Jiang Min Feng Chun-Tang Yu Ze-Bin bao Sheng-Long Zhu fu-Hui wang Shenyang National Laboratory for Materials Science Northeastern UniversityShenyang110819China Institute of Metal Research Chinese Academy of SciencesShenyang110016China

Two thermal barrier coating(TBC)systems comprising NiCoCrAlY bond coat onto a second-generation Ni-based single crystal superalloy and nano structured4 mol%Y_(2)O_(3)-stabilized ZrO_(2)(4YSZ)and conventional yttria-stabilized zirconia(YSZ)top coats upwardly were deposited by approaches of arc ion plating(AIP)and air plasma spray(APS).As indicted by the experimental results,the 4YSZ TBCs exhibited superior thermal cycling resistance compared with conventional YSZ TBCs at 1100℃.The 4YSZ top coat exhibited higher toughness due to its intrinsic property of nanocrystalline structure,homogeneously distributed and diverse directions of pores and preexisted *** cracks and spallation in 4YSZ TBCs occurred at the interface of top coat and thermally grown oxide(TGO)***,the crack initiation and propagation started along the lamellar interface in the top coat of conventional YSZ TBCs,leading to the rapid crack bridging and subsequent spalling of top ***,before and after oxidation,the 4YSZ top coat showed higher hardness compared to conventional YSZ top *** mechanism and distribution of residual stress in TGO for the 4YSZ TBCs were investigated in the current study.

关键词： TBC Nanocrystalline TGO Thermal cycling Toughness

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The effect of sintering and cooling process on geometry distortion and mechanical properties transition of PTFE/Al reactive materials

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Defence Technology（防务技术） 2020年第3期16卷 720-730页

作者： Hai-fu wang bao-qun Geng Huan-guo Guo Yuan-feng Zheng Qing-bo Yu Chao Ge State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100081China

In this research,the effect of the sintering and cooling process on geometry distortion and mechanical properties of PTFE/Al reactive material is *** particularly selected sintering temperatures,three different cooling modes(annealing cooling,normalizing cooling and rapid cooling),three different initial cooling temperature s,as well as six different final cooling temperatures were designed to compare the effects of sintering temperature,cooling rate,initial cooling temperature and final cooling temperature on the properties of reactive *** distortion was quantitatively analyzed by a statistic on the dimensional changes of the specimens and microscopic morphology.A mechanical response properties transition from brittle to ductile was found and *** combining the thermodynamic properties of PTFE and unsteady heat conduction theory,mechanisms of cooling induced morphology change,temperature induced distortion and strength decrease were *** results showed that the cooling rate has the most significant effect on the morphology transformation,while initial cooling temperature has more significant effect on the dimensional distortion than final cooling *** to the mechanical properties transition from brittle to plastic,a more prominent effect of initial cooling temperature than cooling rate and final temperature was revealed.

关键词： Reactive material Sintering Cooling Geometry distortion Mechanical properties

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土壤重金属污染及其植物修复研究

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辽宁大学学报（自然科学版） 2004年第3期31卷 279-283页

作者：肖鹏飞李法云付宝荣王效举辽宁大学环境与生命科学学院辽宁沈阳110036

土壤污染是当今世界面临的主要环境问题之一.传统的污染土壤的物理化学治理技术具有技术要求和经济成本高,严重破坏土壤结构等缺点,不适于低浓度、大范围污染土壤的治理及应用.与之相比较,植物修复以其修复成本低、无二次污染等独特的... 详细信息

土壤污染是当今世界面临的主要环境问题之一.传统的污染土壤的物理化学治理技术具有技术要求和经济成本高,严重破坏土壤结构等缺点,不适于低浓度、大范围污染土壤的治理及应用.与之相比较,植物修复以其修复成本低、无二次污染等独特的优势正受到全世界的普遍关注和重视,并成为环境污染治理研究领域的一个前沿性课题.就我国土壤重金属污染现状与危害、植物修复的原理与优缺点及其研究展望作一简述.

关键词：重金属污染植物修复土壤微生物土壤酶农作物植物挥发

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Delineation of fatty acid metabolism in gastric cancer:Therapeutic implications

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World Journal of Clinical Cases 2023年第20期11卷 4800-4813页

作者： Yu fu Bin wang Peng fu Lei Zhang Yi bao Zhen-Zhen Gao Department of General Practice Medicine The Second affiliated hospital of Jiaxing UniversityJiaxing 314000Zhejiang ProvinceChina Department of Orthopeadic Oncology The Second Affiliated Hospital of Jiaxing UniversityJiaxing 314000Zhejiang ProvinceChina Department of Clinical Oncology The Second affiliated hospital of Jiaxing UniversityJiaxing 314000Zhejiang ProvinceChina

BACKGROUND The prognosis of gastric cancer is extremely *** reprogramming involving lipids has been associated with cancer occurrence and *** To illustrate fatty acid metabolic mechanisms in gastric cancer,detect core genes,develop a prognostic model,and provide treatment *** Raw data from The Cancer Genome Atlas and Gene Expression Omnibus databases were collected and *** expressed fatty acid metabolism genes were identified and incorporated into a risk model based on least absolute shrinkage and selection operator regression ***,patients from The Cancer Genome Atlas were assigned to high-and low-risk cohorts according to the mean value of the risk score as the threshold,which was verified in the Gene Expression Omnibus *** between chemotherapeutic sensitivity and tumor microenvironment features were *** An integrated evaluation was performed in this *** acid metabolismrelated genes were used to construct the risk *** classified into the high-risk cohort were considered to be resistant to chemotherapy based on results of the“pRRophetic”R *** in the high-risk cohort were associated with type Ⅰ/Ⅱ interferon activation,increased inflammation level,immune cell infiltration,and tumor immune dysfunction based on the exclusion algorithm,indicating the potential benefit of immunotherapy in these *** We constructed a fatty acid-related risk score model to assess the comprehensive fatty acid features in gastric cancer and validated its vital role in prognosis,chemotherapy sensitivity,and immunotherapy.

关键词： Stomach neoplasms Fatty acids Metabolism Risk assessment Immunotherapy

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