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Effects of Liaoning Hongyanhe Nuclear Power Plant on the Zooplankton Community in Summer of 2017

Journal of ocean University of China 2020年第5期19卷 1140-1152页

作者： WANG Junjian TAO Zhencheng WANG Yantao WEI Hao LIU Xin LI Chaolun CAS Key Laboratory of Marine Ecology and Environmental sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of sciences Beijing 100049China Laboratory for Marine Ecology and Environmental science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for ocean Mega-science Chinese Academy of SciencesQingdao 266071China school of Marine science and Technology Tianjin UniversityTianjin 300072China State Key Laboratory of Marine Environmental science Xiamen UniversityXiamen 361005China

To evaluate the effects of the Hongyanhe Nuclear Power Plant on the zooplankton community in the surrounding seawater during summer, multiple environmental factors and zooplankton distribution along the east coast of Liaodong Bay were investigated in the summer of 2017. In particular, the influences of seawater temperature, salinity, and chlorophyll a(Chl a) on the zooplankton community were analyzed. Zooplankton abundances and Chl a concentrations along the east coast of Liaodong Bay showed an initial increase followed by a decrease from July to September. During the three months, the zooplankton abundance was the highest(8116.70 ind m^(-3)) in August. The Shannon-Wiener index showed a downtrend from July to September, with the average value falling from 1.65 in July to 1.50 in September. Calanus sinicus, Paracalanus parvus, copepodid, and bivalve larvae were the dominant species/groups in the three months. The effects of the nuclear power plant's outlet on the environment factors were mainly reflected in the increased seawater temperature. Redundancy analysis showed that the zooplankton community was jointly affected by seawater temperature, salinity and Chl a concentration, and the degree of this impact varied monthly. The impact of seawater temperature on the zooplankton community was stronger than that of salinity. The primary impact of the Hongyanhe Nuclear Power Plant on the structure and distribution of the zooplankton community in the surrounding seawater during the summer was increased seawater temperature, which caused a reduction in the abundance of dominant species/groups.

关键词： zooplankton abundance community structure diversity environmental factor Hongyanhe Nuclear Power Plant

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Effects of coal-fired power plants on soil microbial diversity and community structures

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Journal of Environmental sciences 2024年第3期137卷 206-223页

作者： Bowen Sun Renbin Zhu Yu Shi Wanying Zhang Zeming Zhou Dawei Ma Runfang Wang Haitao Dai Chenshuai Che Institute of Polar Environment&Anhui Key Laboratory of Polar Environment and Global Change School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 450046China State Grid Anhui Electric Power Research Institute Hefei 230601China

Long-term deposition of atmospheric pollutants emitted from coal combustion and their effects on the eco-environment have been extensively studied around coal-fired power ***,the effects of coal-fired power plants on soil microbial communities have received little attention through atmospheric pollutant deposition and ***,we collected the samples of power plant soils(PS),coal-stacking soils(CSS)and agricultural soils(AS)around three coal-fired power plants and background control soils(BG)in Huainan,a typical mineral resource-based city in East China,and investigated the microbial diversity and community structures through a high-throughput sequencing ***-stacking significantly increased(p<0.05)the contents of total carbon,total nitrogen,total sulfur and Mo in the soils,whereas the deposition of atmospheric pollutants enhanced the levels of V,Cu,Zn and ***,Actinobacteria,Thaumarchaeota,Thermoplasmata,Ascomycota and Basidiomycota were the dominant taxa in all *** bacterial community showed significant differences(p<0.05)among PS,CSS,AS and BG,whereas archaeal and fungal communities showed significant differences(p<0.01)according to soil samples around three coal-fired power *** predominant environmental variables affecting soil bacterial,archaeal and fungal communities were Mo-TN-TS,Cu-V-Mo,and organic matter(OM)-Mo,*** soil microbial genera were closely related to multiple key factors associated with stacking coal and heavy metal deposition from power *** study provided useful insight into better understanding of the relationships between soil microbial communities and long-term disturbances from coal-fired power plants.

关键词： Coal-fired power plants Soil microbial communities Coal-stacking Heavy metals Environmental variables

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Bioleaching of chalcopyrite by mixed culture of moderately thermophilic microorganisms

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Journal of Central South University of Technology 2007年第4期14卷 474-478页

作者：邬长斌曾伟民周洪波符波黄菊芳邱冠周王淀佐 China ocean Mineral Resources Research and Development Association school of Resource Processing and Bioengineering Central South University Key Laboratory of Biometallurgy Ministry of Education

A mixed culture of moderately thermophilic microorganisms was enriched from acid mine drainages(AMDs)samples collected from several sulphide mines in China,and the bioleaching of chalcopyrite was conducted both in shake flask and *** results show that in the shake flask,the mixture can tolerate 50 g/L chalcopyrite after being acclimated to gradually increased concentrations of *** copper extraction increases obviously in bioleaching of chalcopyrite with moderately thermophilic microorganisms supplemented with 0.4 g/L yeast extract at 180 r/min,74% copper can be extracted in the pulp of 50 g/L chalcopyrite after 20 *** with copper extractions of mesophilic culture,unacclimated culture and acclimated culture without addition of yeast extract,that of accliniated culture with addition of yeast extract is increased by 53%,44% and 16%,*** a completely stirred tank reactor,the mass fraction of copper and total iron extraction reach up to 81% and 56%,*** results also indicate that it is necessary to add a large amount of acid to the pulp to extract copper from chalcopyrite effectively.

关键词： bioleaching moderately thermophilic microorganisms acclimation chalcopyrite shake flask experiment stirred tank reactor

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Solar energetic particles intensity variations associated with a tilted-dipole 3D corotating interaction region

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earth and Planetary Physics 2024年第5期8卷 797-810页

作者： YuJi Zhu Fang Shen Xi Luo Yang Wang BoFeng Tang State Key Laboratory of Space Weather National Space Science CenterChinese Academy of SciencesBeijing 100190China Shandong Institute of Advanced Technology(SDIAT) Jinan 250100China College of earth and Planetary sciences University of Chinese Academy of SciencesBeijing 100049China school of science Harbin Institute of TechnologyShenzhen 518055China

The effect of a tilted-dipole three-dimensional corotating interaction region(CIR)on the transport and acceleration of solar energetic particles(SEPs)is *** this work,we discussed how the particle intensity longitudinal and radial dependence might be influenced by the background ***,we investigate how the spectral index distribution is modulated by the CIR structure We use the focused transport equation(FTE)to describe the propagation and acceleration of SEPs in a tilt-dipole 3D CIR,generated by the high-resolution 3D magnetohydrodynamic(MHD)*** forward stochastic differential method is used to solve the *** protons with theE~(-4.4)spectrum from 0.5 to 15 MeV are injected uniformly at the heliographic equator of 0.15 *** quantities are extracted along each interplanetary magnetic field(IMF)line to show the *** the tilted-dipole CIR background,if injected from the solar equator at the inner boundary,particles in the slow flow are transported to higher latitudes due to the extension of the IMF lines to higher *** longitudinal patterns of the particles are dominated by the density of IMF *** focusing effect modulates the longitudinal variation of the particle intensity and gives rise to new longitudinal intensity *** adiabatic effect largely increases the intensity fluctuation along the *** structure of the solar wind can also lead to the difference of the indexαin the empirical functionI_(max)=kR~(-α),describing the radial variation of peak intensity according to our *** the influence of the CIR structure,the indexαvaries from 1.9 to 3.4 at 0.3-1.0 *** variation of the solar wind speed should be considered when estimating the radial dependence of the SEP peak *** spectra indices rise near the CIR boundaries and drop near the stream interface(SI).The adiabatic effect makes the spatial variability of the spectral index *** spectral index could be similar at d

关键词： solar energetic particle(SEP) corotating interaction regions(CIR) magnetohydrodynamic(MHD)

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Geochemical and microbial characters of sediment from the gas hydrate area in the Taixinan Basin, South China Sea

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Acta oceanologica Sinica 2017年第9期36卷 52-64页

作者： GONG Junli SUN Xiaoming LIN Zhiyong LU Hongfeng LU Yongjun school of earth science and Engineering Sun Yat-sen University Guangzhou 510275 China school of Marine sciences Sun Yat-sen University Guangzhou 510006 China Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Guangzhou 510006 China Guangzhou Marine Geology Survey Guangzhou 510075 China school of Life sciences Sun Yat-sen University Guangzhou 510275 China

The Taixinan Basin is one of the most potential gas hydrate bearing areas in the South China Sea and abundant gas hydrates have been discovered during expedition in 2013. In this study, geochemical and microbial methods are combinedly used to characterize the sediments from a shallow piston Core DH_CL_11（gas hydrate free） and a gas hydrate-bearing drilling Core GMGS2-16 in this basin. Geochemical analyses indicate that anaerobic oxidation of methane（AOM） which is speculated to be linked to the ongoing gas hydrate dissociation is taking place in Core DH_CL_11 at deep. For Core GMGS2-16, AOM related to past episodes of methane seepage are suggested to dominate during its diagenetic process; while the relatively enriched δ18O bulk-sediment values indicate that methane involved in AOM might be released from the ＂episodic dissociation＂ of gas *** analyses indicate that the predominant phyla in the bacterial communities are Firmicutes and Proteobacteria（Gammaproteobacteria and Epsilonproteobacteria）, while the dominant taxa in the archaeal communities are Marine_Benthic_Group_B（MBGB）, Halobacteria, Thermoplasmata, Methanobacteria,Methanomicrobia, Group C3 and MCG. Under parallel experimental operations, comparable dominant members（Firmicutes and MBGB） are found in the piston Core DH_CL_11 and the near surface layer of the long drilling Core GMGS2-16. Moreover, these members have been found predominant in other known gas hydrate bearing cores, and the dominant of MBGB has even been found significantly related to gas hydrate occurrence. Therefore,a high possibility for the existing of gas hydrate underlying Core DH_CL_11 is inferred, which is consistent with the geochemical analyses. In all, combined geochemical and microbiological analyses are more informative in characterizing sediments from gas hydrate-associated areas in the South China Sea.

关键词： Geochemistry Microbial community 16S rRNA Gas hydrate Taixinan Basin South China Sea

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Magnetocaloric effect and phase transition critical behavior of La_(0.75)Sr_(0.25)Mn_(0.9)Co_(0.1)O_(3) compound synthesized under the high pressure

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Tungsten 2024年第3期6卷 621-632页

作者： Jing Zhao Lei Gao Jian-Jun Zhao Wei Wei Hui-Qin Yun Ru Xing Huai-Jin Ma Xiang Jin Luo-Meng Chao school of Physical science and Technology Key Laboratory of Magnetism and Magnetic Materials for Higher Education in Inner Mongolia Autonomous RegionBaotou Teachers CollegeBaotou 014030China National Key Laboratory of Baiyunobo Rare earth Resource Research and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China school of Physics and Electronic Information Inner Mongolia Normal UniversityHohhot 010020China College of science Inner Mongolia University of Science and TechnologyBaotou 014010China

In this study,a novel method is proposed for producing perovskite rare-earth manganese oxide magnetic refrigeration materials that exhibit superior properties compared to similar *** maximum magnetic entropy change values for this sample are 1.44 and 3.75 J·kg-1·K^(-1)for magnetic fields of 2 and 7 T,***,its relative cooling power has been calculated to be 101.96 and 404.78 J·kg^(-1),indicating good *** results were obtained using the sample synthesized under a pressure of 4 GPa,and the sample has undergone a second phase *** critical behavior of the sample fits well with the mean field *** different magnetic fields,there is a significant overlap between the values of the maximum magnetic entropy change and the temperature-averaged entropy change,indicating that the refrigeration performance of the sample after high pressure can approach its maximum capability.

关键词： High-pressure synthesis Magnetocaloric effect Relative cooling power Magnetic phase transition

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Growth,serum biochemical parameters,salinity tolerance and antioxidant enzyme activity of rainbow trout(Oncorhynchus mykiss)in response to dietary taurine levels

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Marine Life science & Technology 2021年第4期3卷 449-462页

作者： Ming Huang Xiaogang Yang Yangen Zhou Jian Ge DAllen Davis Yunwei Dong Qinfeng Gao Shuanglin Dong Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China school of Fisheries Aquacultureand Aquatic SciencesAuburn UniversityAuburnAL 36849-54119USA Function Laboratory for Marine Fisheries science and Food Production Processes Pilot National Laboratory for Marine Science and TechnologyQingdao 266235China

This study evaluated the effect of dietary taurine levels on growth,serum biochemical parameters,salinity adaptability,and antioxidant activity of rainbow trout(Oncorhynchus mykiss).Four diets were formulated with taurine supplements at 0,0.5,1,and 2%w/v(abbreviated as To,T05,Tt,and T2,respectively).Rainbow trouts(initial weight of 80.09±4.72 g)were stocked in tanks(180 L capacity),and were fed these diets for six weeks and subsequently underwent salinity *** indicators were determined before salinity acclimation at 1,4,7,and 14 days *** showed that there were no significant differences in growth performance(final mean weight ranged from 182.35 g to 198.48 g;percent weight gain was between 127.68%and 147.92%)of rainbow trout in freshwater stage,but dietary taurine supplement significantly increased serum-free taurine *** entering seawater,the Na+-K+-ATPase activity of T2 group returned to its freshwater levels,and the serum cortisol content was significantly higher than To and To 5 *** the end of this experiment,the liver superoxide dismutase activity in the To and To 5 groups was significantly lower than in the Tj and T2 groups,and the liver catalase in the To group was the lowest whereas that in the T2 group was the *** malondialdehyde content was the highest in the To group,and the lowest in the T2 *** on the results of this study,supplement of dietary taurine(0.5-2%)enhanced the salinity tolerance in rainbow trout,which increased with the higher taurine concentration.

关键词： Antioxidant status Health status Rainbow trout Salinity adaptation Taurine

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A Uniform Orogen-parallel Extension System of the Shear Zones in the Tongbai-Dabie Orogenic Belt, Central China

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Acta Geologica Sinica(English Edition) 2018年第2期92卷 556-567页

作者： LIU Huan LIN Shoufa SONG Chuanzhong Nanjing Center China Geological Survey Department of earth and Environmental sciences University of Waterloo school of Resources and Environmental Engineering Hefei University of Technology

Large-scale magmatism affected the Tongbai-Dabie orogenic belt during post-collisional lateral tectonic extension in the Cretaceous, which was suggested to account for the widespread deformation and migmatization in the Tongbai-Dabie complexes. However, it cannot explain the most deformations in the shear zones. The northwest-southeast shear zones are developed around or wrapped the Tongbai-Dabie complexes. They play an important role for the interpretation of the tectonic evolution of the Tongbai-Dabie orogenic belt. By a systematically observation and description of the geometry and kinematics of these shear zones, we found that the shear zones to the north dip NE and have a uniform sinistral shear sense, the shear zone to the south dips SW and has a uniform dextral shear sense, and the shear zones at the core are sub-horizontal and have a uniform top-to-NW sense of shear. Combining with the comparison of previous and our geochronological studies, we interpret these associations as indicating that these shear zones were originally a single, more flat-lying and sub- horizontal shear zone with a uniform top-to-NW shear sense before the folding-doming of the Tongbai- Dabie complexes and suggest that the Tongbai-Dabie orogenic belt experienced a uniform top-to-NW orogen-paraUel extension in the ductile lithosphere before the widespread magmatism in the Cretaceous.

关键词： Tongbai-Dabie orogenic belt shear zone Tongbai complex Dabie complex orogen-parallel extension

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Using Sr isotopes to trace the geographic origins of Chinese mitten crabs

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Acta Geochimica 2020年第3期39卷 326-336页

作者： Hao-Ming Yin Fang Huang Jun Shen Hui-Min Yu CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026AnhuiChina CAS Center for Excellence in Comparative Planetology University of Science and Technology of ChinaHefei 230026AnhuiChina CCIC Traceability Jiangsu Technology Service Co. LtdNanjingChina

Identifying the geographic origins of Chinese mitten crabs is important for food safety and fair market *** this study,we used strontium(Sr) isotopes as a tool to trace the geographic origins of Chinese mitten *** mitten crabs,water,and different types of crab feed were collected from four different lakes for Sr isotope *** results showed that the Sr isotope compositions of the different parts from one single crab were consistent within error,indicating that any piece of a crab could be used to represent the Sr isotope characteristics of the whole *** Sr isotope compositions of Chinese mitten crabs from the same lake were consistent within the analytical error,and the values were similar to the Sr isotope composition of the water from the same ***,the Sr isotope compositions of water and crabs from different lakes are significantly ***,the Sr isotope compositions of Chinese mitten crabs are mainly controlled by lake water composition,while the impact of feed is *** study provides an effective method for tracing the geographic origins of Chinese mitten crabs.

关键词： Chinese mitten crab Lakes Sr isotopes Geographic origin

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Identification of Microplankton in South China Sea with Image-Matching Individual PCR

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Journal of ocean University of China 2019年第1期18卷 219-226页

作者： LI Si YANG Guanpin ZHU Baohua PAN Kehou school of Chemical Engineering and Technology Hebei University of Technology Engineering Research Center of Seawater Utilization Technology of Chinese Ministry of Education Hebei University of Technology College of Marine Life sciences Ocean University of China Key Laboratory of Mariculture of Chinese Ministry of Education Ocean University of China

In this study, marine microplankton were identified by combining standard light microscopy with Sanger 18S rRNA gene sequencing. The image-matching individual PCR technique was applied to identify the image collectable unicellular microplankton to genera. Instead of pure strain culture and morphological identification, microplankton individual cells were isolated and fixed with glutaraldehyde, frozen and stored for months. Finally, they were imaged under a microscope and molecularly identified via phylogenetic analysis of their 18S ribosomal RNA gene(18S rDNA). Microplankton cells were collected at 30 locations in South China Sea, and were assigned to 21 known and 4 unidentified genera(2 uncultured fungi and 2 uncultured stramenopiles) with phylogenetic analysis in parallel to the morphological identification.

关键词： image-matching individual PCR microplankton 18S ribosomal RNA gene morphological identification molecular identification South China Sea

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