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| 1 | Spatial-temporal variation of phytoplankton community structure in Jiaozhou Bay, China显示文摘To better understand the spatial-temporal variation in phytoplankton community structure and its controlling factors in Jiaozhou Bay, Qingdao, North China, four seasonal sampling were carried out in 2017. The phytoplankton community structure and various environmental parameters were examined. The phytoplankton community in the bay was composed of mainly diatoms and dinofl agellates, and several other species of Chrysophyta were also observed. Diatoms were the most dominant phytoplankton group throughout the year, except in spring and winter, when Noctiluca scintillans was co-dominant. High Si/N ratios in summer and fall refl ect the high dominance of diatoms in the two seasons. Temporally, the phytoplankton cell abundance peaked in summer, due mainly to the high temperatures and nutrient concentrations in summer. Spatially, the phytoplankton cell abundance was higher in the northern part of the bay than in the other parts of the bay in four seasons. The diatom cell abundances show signifi cant positive correlations with the nutrient concentrations, while the dinofl agellate cell abundances show no correlation or a negative correlation with the nutrient concentrations but a signifi cant positive correlation with the stratifi cation index. This discrepancy was mainly due to the diff erent survival strategies between diatoms and dinofl agellates. The Shannon-Wiener diversity index ( H′) values in the bay ranged from 0.08 to 4.18, which fell in the range reported in historical studies. The distribution pattern of H′ values was quite diff erent from that of chlorophyll a , indicating that the phytoplankton community structure might have high biomass with a low diversity index. Compared with historical studies, we believe that the dominant phytoplankton species have been changed in recent years due mainly to the changing environment in the Jiaozhou Bay in recent 30 years. | GUO Shujin ZHU Mingliang ZHAO Zengxia LIANG Junhua ZHAO Yongfang DU Juan SUN Xiaoxia | 2019 | Journal of Oceanology and Limnology2019，37，5： | 6 |
| 2 | Mechanical properties and texture evolution during rolling process of an AZ31 Mg alloy 显示文摘 | Liang Shujin Sun Hongfei Liu Zuyan | 2009 | Journal of Alloys and Compounds2009，472，： | 1 |
| 3 | Relationship Between Zooplankton Community Characteristics and Environmental Conditions in the Surface Waters of the Western Pacific Ocean During the Winter of 2014显示文摘Understanding the effects of environmental heterogeneity on zooplankton communities has been a hot topic for several decades.However,relatively little is known about the responses of zooplankton communities to environmental conditions at large scales from inshore waters to the open ocean.Here,we used the abundance,biovolume,taxa and size spectra of zooplankton col-lected from the surface waters of the western Pacific Ocean during the winter of 2014 to study the relationship between zooplankton community characteristics and environmental conditions using multiple linear regression(MLR)analysis and redundancy analysis(RDA).According to a hierarchical cluster analysis based on hydrographic conditions,the study area was classified into five water masses.Significant correlations were identified between the limited nutrients and the zooplankton abundance and biovolume from inshore waters to the open ocean.Non-metric multidimensional scaling(NMDS)revealed two distinct zooplankton assemblages.In the northern inshore,Copepoda and Euphausiacea were the dominant zooplankton taxa and in other water masses,Chaetognatha and gelatinous zooplankton were the dominant zooplankton taxa in addition to Copepoda.Our results suggested that,on a large scale from inshore waters to the open ocean in the western Pacific Ocean,the spatial distribution of zooplankton taxa was mainly influ-enced by environmental conditions,while in the inshore waters,it was due to the top-down effect of the dominant zooplankton taxa.Finally,the slope of the normalized biovolume size spectra(NBSS)was negatively correlated with chlorophyll-a(Chl-a)concentra-tion and PO_(4)^(3−)-P concentration in the inshore waters,which indicated that the higher the trophic level the dominant zooplankton taxa were,the steeper the NBSS slope was. | TIAN Ziyang ZHENG Shan GUO Shujin ZHU Mingliang LIANG Junhua DU Juan SUN Xiaoxia | 2021 | Journal of Ocean University of China2021，20，3： | 1 |
| 4 | Declorization of azodye by immobilized geotrichum candidum显示文摘 | Yin Liang Chen Zhanghe Zhao Shujin | 2007 | Journal of Shanxi University of Science & Technology:Natural Science Edition2007，25，5： | 1 |
| 5 | The Study on Improved Cryopreservation Technique of The Ultrastructure of Corneal Endothelial Cells显示文摘The traditional corneal cryopreservation technique was improved. We carried out an experimental study that rabbit corneas were cryop-reserved by using polyvinylpyrolidone (PVP) as cryoprotective agent and dimethlsulfoxide (DMSO) as the control. The endothelia of cryopreserved corneas were evaluated by scanning and transmission electron microscopy and vital staining. The study shows that PVP is an excellent extracellular cryoprotective agent and has the characteristic of low toxicity or no toxicity to co... | Zhiyang Jia, Shujin Liang, Changling Wang , Peixin ZhugeDepartment of Ophthalmology, The Second Affiliated Hospital of Hebei Medical College Shijiazhuang 050000, China.Laboratory of Eye Disease, The Second Affiliated Hospital of Hebei Medical college Shijiazhuang 050000, China | 1994 | 眼科学报1994，10，1： | 1 |
| 6 | Carbon biomass,carbon-to-chlorophyll a ratio and the growth rate of phytoplankton in Jiaozhou Bay,China显示文摘Carbon biomass,carbon-to-chlorophyll a ratio(C꞉Chl a),and the growth rate of phytoplankton cells were studied during four seasonal cruises in 2017 and 2018 in Jiaozhou Bay,China.Water samples were collected from 12 stations,and phytoplankton carbon biomass(phyto-C)was estimated from microscope-measured cell volumes.The phyto-C ranged from 5.05 to 78.52μg C/L in the bay,and it constituted a mean of 38.16% of the total particulate organic carbon in the bay.High phyto-C values appeared mostly in the northern or northeastern bay.Diatom carbon was predominant during all four cruises.Dinoflagellate carbon contributed much less(<30%)to the total phyto-C,and high values appeared often in the outer bay.The C꞉Chl a of phytoplankton cells varied from 11.50 to 61.45(mean 31.66),and high values appeared in the outer bay during all four seasons.The phyto-C was also used to calculate the intrinsic growth rates of phytoplankton cells in the bay,and phytoplankton growth rates ranged from 0.56 to 1.96/d;the rate was highest in summer(mean 1.79/d),followed by that in fall(mean 1.24/d)and spring(mean 1.17/d),and the rate was lowest in winter(mean 0.77/d).Temperature and silicate concentration were found to be the determining factors of phytoplankton growth rates in the bay.To our knowledge,this study is the first report on phytoplankton carbon biomass and C꞉Chl a based on water samples in Jiaozhou Bay,and it will provide useful information for studies on carbon-based food web calculations and carbon-based ecosystem models in the bay. | Shujin GUO Zengxia ZHAO Junhua LIANG Juan DU Xiaoxia SUN | 2021 | Journal of Oceanology and Limnology2021，39，4： | 0 |
| 7 | Light induced space-time patterns in a superfluid Fermi gas显示文摘Patterns resulted from modulation instability are ubiquitous and have been extensively studied in optics and Bose-Einstein condensates. However, these patterns have not been realized in ultracold Fermi gases, although there has been considerable theoretical interest in this field. Here we report an experimental observation of space-time patterns in a superfluid Fermi gas excited by red-detuned laser light. Longitudinal spatially fluctuated laser beams induce the spontaneous formation of two different kinds of patterns. For strongly interacting Fermi gas, the induced patterns accompanied by phonon excitations demonstrate a striking'X'-type dispersion relation between frequency and wavevector. Then, the propagation of such patterns in the Bose-Einstein condensate to Bardeen-Cooper-Schrieffer crossover is investigated, which is related to the speed of sound and agrees well with theoretical calculations. The observed patterns in noninteracting Fermi gases are stationary without phonon excitations and show a much longer lifetime. | Fang Li Shujin Deng Liang Zhang Jiahui Xia Licheng Yi Haibin Wu | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，9： | 0 |
| 8 | Solidification Behavior and Microstructures Characteristics of Ti-48Al-3Nb-1.5Ta Powder Produced by Supreme-Speed Plasma Rotating Electrode Process显示文摘In this study,the characteristics and solidification behavior of Ti-48Al-3Nb-1.5Ta powder produced by supreme-speed plasma rotating electrode process(SS-PREP®)were investigated.The microstructure,phase and characteristics were analyzed by scanning electron microscopy,X-ray diffraction and other methods.The atomization mechanism is direct drop formation.The relationship between the particle size and cooling rate is vc=3.14×10^(-7)·d^(-2)+1.18×10^(-2)·d^(3/2),and the relationship between secondary dendrite arm space and the particle size isλ=0.028d+0.11,as well as the relationship between SDAS and cooling rate isλ=4.84×10^(-5)·T^(-1.43).With increase in particle size,the surface structure gradually changes from the featureless smooth structure to dendritic and cellular dendritic morphology,and the flow ability becomes better.The carbides mainly exist within 5 nm of the surface and the oxidation layer is about 20 nm thick.Ti-48Al-3Nb-1.5Ta powder was mainly composed ofα2 phase andγphase.With increase in particle size,the content ofγphase increases,and the hardness decreases accordingly.The 106–250μm particles are composed of multiple grains with the grain size of 70–80μm.The microstructure,phase composition and hardness of different TiAl powders with the same size are similar,but the elastic modulus is different. | Zhenbo Zuo Rui Hu Xian Luo Qingxiang Wang Chenxi Li Zhen Zhu Jian Lan Shujin Liang Hongkui Tang Kang Zhang | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，8： | 0 |
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