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| 1 | Magnetic mineralogy of the Hongqiling Cu-Ni sulphide deposit: Implications for ore genesis显示文摘Pyrrhotite is one of the common ore minerals in Cu-Ni sulphide deposits, but only monoclinic pyrrhotite is ferromagnetic at room temperature. X-ray and EPA analyses reveal that most pyrrhotite forming sideronitic texture in the Hongqiling Cu-Ni sulphide deposit is monoclinic, but that in the massive ore is a mixture of monoclinic and hexagonal pyrrhotites. Differential thermal and magnetic- thermogravimetric analyses of massive ore indicate a magnetic transition and heat absorption at 323℃, suggesting that this temperature is the thermomagnetic and phase transition point of pyrrhotite. For massive pyrrhotite ores heated at 400oC for 30 h and then quenched by cool water, the monoclinic pyrrhotite (mpo) transforms completely into the hexagonal pyrrhotite (hpo). However, all the pyrrhotites resulting from slow cooling of the sample in air are mpo. These results indicate that transformation between hpo and mpo depends upon the cooling rate. Therefore, massive ores in this deposit might have been formed via rapid cooling of ore melts. On the other hand, it is significant to study the effect of the ratio of the magnetite in total ores on the genesis of magmatic Cu-Ni suphide deposits. | Xi Aihua Ge Yuhui Cai Yuanfeng Zhang Xuefeng | 2007 | Progress in Natural Science:Materials International2007，17，10： | 1 |
| 2 | Nitrate removal to its fate in wetland mesocosm filled with sponge iron:Impact of influent COD/N ratio显示文摘Sponge iron(s-Fe°)is a porous metal with the potential to be an electron donor for denitrification.This study aims to evaluate the feasibility of using s-Fe as the substrate of wetland mesocosms.Here,wetland mesocosms with the addition of s-Fe'particles(CW-Fc)and a blank control group(CW-CK)were established.The NOj-N reduction property and water quality parameters(pH.DO.and ORP)were examined at three COD/N ratios(0.5.and 10).Results showed that the NO3--N removal efficiencies were significantly increased by 6.6 to 58.9%in the presence of s-Fe NH4+-N was mainly produced by chemical denitrification,and approximately 50% of the NO3--N was reduced to N4+-N,at the COD ratio of 0.An increase of the influent COD/N ratio resulted in lower chemical denitrification and higher bio-dcnitrification.Although chemical denitrification mediated by s-Fe led to an accumulation of NH4+-N at COD/N ratios of 0 and 5.the TIN removal efficiencies increased by 4.5#12.4#.Moreover,the effluent pll,DO.and ORP values showed a significant negative correlation with total Fe and Fe(II)(P<0.01).High-throughput sequencing analysis indicated that Trichococctis(77.2%)was the most abundant microorganism in the CW-Fc mcsocosm,while Thauera,Zoogloea.and Herbaspirillum were the primary denitrifying bacteria.The denitrifiers,Simplicispira,IXxhloronwnas,and Denirratisoma.were the dominant bacteria for CW-CK.This study provides a valuable method and an improved understanding of NOj-N reduction characteristics of s-Fc in a wetland mcsocosm. | Zhihao Si Xinshan Song Xin Cao Yuhui Wang Yifei Wang Yufeng Zhao Xiaoyan Ge Awet Arefe Tesfahunegn | 2020 | Frontiers of Environmental Science & Engineering2020，14，1： | 1 |
| 3 | A new species of Platanus from the Cenomanian(Upper Cretaceous) in eastern Heilongjiang, China显示文摘The stratigraphic division and sequence of the Upper Cretaceous sediments in eastern Heilongjiang Province,China,have been ambiguous and controversial,mainly due to a lack of biostratigraphically useful fossils and related radiometric dating.A new species of angiospermous fossil plant.Platanus heilongjiangensis sp.nov.,from Qitaihe in eastern Heilongjiang has been found in sediments conformably above which zircons from a rhyolitic tuff has been dated by U-Pb radiometric methods as 96.2±1.7 Ma.indicating that the Upper Houshigou Formation is of Cenomanian age.This discovery not only provides new data to improve our stratigraphic understanding of the Houshigou Formation,but also shows that Platanus flourished in the early Late Cretaceous floras of the region.This new study also indicates active volcanism taking place in the eastern Heilongjiang region during the Cenomanian of the Late Cretaceous. | Ge Sun Tatiana Kovaleva Fei Liang Tao Yang Yuhui Feng | 2019 | Geoscience Frontiers2019，10，4： | 1 |
| 4 | Novel photoelectric material of perovskite-like(CH_(3))_(3)SPbI_(3) nanorod arrays with high stability显示文摘Organometallic halide perovskite materials make great achievements in optoelectronic fields,especially in solar cells,in which the organic cations contain amine components.However,the amine with NàH bonds is easily hydrolyzed with moisture in the air,weakening the perovskite materials stability.It is desirable to develop other non-amine stable perovskite materials.In this work,sulfur-based perovskite-like(CH_(3))_(3)SPbI_(3) nanorod arrays were fabricated by a solution-processed method,which can be indexed hexagonal crystal structure in the space group P63 mc.The binding force is exceptionally strong between the non-amine(CH_(3))_(3) S+and[PbI_(6)]_(4)-octahedral,leading to high stability of(CH_(3))_(3)SPbI_(3).The(CH_(3))_(3)SPbI_(3) nanorod arrays can keep the morphology and crystal structure in an ambient atmosphere over 60 days.In addition,the(CH_(3))_(3)SPbI_(3) nanorod arrays can offer direct charge transfer channels,which show excellent optoelectronic properties.The(CH_(3))_(3)SPbI_(3) nanorod arrays-based solar cells with VOx hole transfer layers achieved a power conversion efficiency of 2.07%with negligible hysteresis.And the(CH_(3))_(3)SPbI_(3) nanorod arrays were also effectively applied in photodetectors with interdigitated gold electrodes.This work demonstrates that sulfur-based perovskite-like(CH_(3))_(3)SPbI_(3) is a novel promising stable compound with great potential for practical optoelectronic applications. | Ruiyuan Hu Chuangye Ge Liang Chu Yifei Feng Shanshan Xiao Yuhui Ma Wei Liu Xing'ao Li Mohammad Khaja Nazeeruddin | 2021 | Journal of Energy Chemistry2021，30，8： | 0 |
| 5 | New U-Pb zircon ages document Late Triassic Tianqiaoling flora of eastern Jinlin,NE China显示文摘The Late Triassic Tianqiaoling flora is well-known in China,and its discovery has changed our understanding of Chinese Late Triassic phytogeographical divisions.More broadly,this flora has great significance for the study of phytogeography in East Asia during this time.However,the previous dating of this flora was only evidenced by plant fossils and stratigraphic correlation,and the accurate dating has still not been achieved.In this study,rhyolite samples were collected from the bottom of the Tianqiaoling Formation,which is conformally contacted the Tianqiaoling flora-bearing beds.The results of new U-Pb dating gave ages for the rhyolites of 212.8±2.5 Ma,indicating the end of Malugou Formation and initial Tianqiaoling Formation in deposition occurred in the late Norian(~227–208.5 Ma),which is contemporaneous with the peak of the Tianqiaoling flora in development.Our radiometric dating results are basically consistent with paleobiological evidence.The new age provides a key anchor point for regional stratigraphic correlation of the Tianqiaoling flora with its related Late Triassic floras,and contribute to a better understanding of the geology and phytogeography in the East Asia,particularly in the'triangle region'covering the eastern Jilin(China),South Primorye(Russia)and Southwest Japan,during the Late Triassic. | Yuhui FENG Tao YANG Fei LIANG Ge SUN | 2021 | Science China Earth Sciences2021，64，5： | 0 |
| 6 | Recent advance in study of K-Pg boundary in Jiayin of Heilongjiang,China and its adjacent area显示文摘The non-marine Cretaceous-Paleogene boundary(KPgB)in Jiayin of Heilongjiang was first defined and reported in China by the authors research team in 2011.Thereafter the continuous research on the KPgB and its related Late Cretaceous biota in Jiayin has been made by the authors in 2012-2020.The achievements of the research are mainly reflected as follows:(1)a new drilling borehole with 60 m in depth carried out in the Xiaoheyan of Jiayin in 2016,supplemented new palynological evidence for the KPgB definition in 2011;(2)some radiometric dating newly made on the strata related to the KPgB in Jiayin and its neighboring Russian area,provided the supplemental evidence for the KPgB definition in Jiayin;(3)many new fossils found by the authors,represented by the angiosperms Dalembia and Nelumbo,refresh understanding the Late Cretaceous environment of Jiayin;and(4)the TEM method is applied in the study of pollen exine ultrastructure of Pseudointegricorpus,Wodehouseia,and Aquilapollenites,promoting the late Maastrichtian ecological study in Jiayin,related to the KPgB. | SUN Ge SUN Chunlin SUN Yuewu ZHANG Shuqin WU Wenhao YANG Tao LIANG Fei FENG Yuhui Markevich V Ashraf A R Bugdaeva E. Tekleva M. Suzuki S. | 2021 | Global Geology2021，24，4： | 0 |
| 7 | Regulation of different light conditions for efficient biomass production and protein accumulation of Spirulina platensis显示文摘Light plays an important role in the photosynthesis and metabolic process of microalgae.However,how different light conditions regulate the biomass production and protein accumulation of microalgae is mostly unknown.In this study,the influence of different light conditions,including light colors,densities,and light:dark cycles on the cell growth and biochemical composition of Spirulina platensis was symmetrically characterized.Under different colored lights,S.platensis all shows an increase trend within the increased light intensity ranges;however,each showing different optimal light intensities.At the same light intensity,different colored lights show different growth rate of S.platensis following the sequence of red>white>green>yellow>blue.The maximum growth rate and protein accumulation were determined as 21.88 and 5.10 mg/(L·d)when illuminated under red LED.The energy efficiency of different light sources was calculated and ranked as red>white>blue≈green>yellow.Transcriptomic analysis suggests that red light can promote cell growth and protein accumulation by upregulating genes related to photosynthesis,carbon fixation,and C-N metabolism pathways.This study provides a conducive and efficient way to promote biomass production and protein accumulation of S.platensis by regulating light conditions. | Yufei ZHANG Xianjun LI Yuhui LI Shiqi LIU Yanrui CHEN Miao JIA Xin WANG Lu ZHANG Qiping GAO Liang ZHANG Daoyong YU Baosheng GE | 2024 | Journal of Oceanology and Limnology2024，42，1： | 0 |
| 8 | Erratum to:Regulation of different light conditions for efficient biomass production and protein accumulation of Spirulina platensis显示文摘In this article,the legend for Fig.3 f&g was inadvertently mislabeled.The figure below shows the wrong one.The figure should have appeared as shown below. | Yufei ZHANG Xianjun LI Yuhui LI Shiqi LIU Yanrui CHEN Miao JIA Xin WANG Lu ZHANG Qiping GAO Liang ZHANG Daoyong YU Baosheng GE | 2024 | Journal of Oceanology and Limnology2024，42，2： | 0 |
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