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    题名 作者 年代 出处 被引量
1Microstructure and mechanical properties of hypereutectic Al-Si alloy modified with Cu-P显示文摘The microstructure and mechanical properties of Al-14.6Si castings modified by Cu-P master alloy under different conditions were studied with optical microscope(OM) and mechanical testing and simulation(MTS).The results indicate that the Cu-P master alloy possesses not only obvious modification effect,but also longevity effect with more than 8 h on the hypereutectic Al-Si alloy.It is shown from thermal calculation,scanning electron microscope(SEM),and energy dispersive analysis of X-rays(EDAX) that the modification mechanism of Cu-P on primary silicon in the castings is heterogeneous nucleation around AlP particles.The Cu-P master alloy has no or little modifying effect on eutectic silicon,even though it has obvious modification on primary silicon in the castings.This may be because of the fast transformation of eutectic silicon at a very narrow temperature,which will notably weaken the role of AlP particles as heterogeneous nuclei for eutectic silicon.ZHANG Henghua DUAN Haili SHAO Guangjie XU Luoping 2008Rare Metals2008,27,1:35
2Modification mechanism of cerium on the Al-18Si alloy显示文摘在不同扔的状态下面的高级低共熔体的 Al-Si 合金上的稀土元素铈(Ce ) 的效果被光显微镜和量的图象分析学习了。尺寸和在铸造物的主要的硅的数量随 melt 的增加的 Ce 的增加减少,这被发现。好 facetted 形状的从分叉的形状的同时主要的硅变化。尽管在铸造物的最容易溶解的硅上的修正也随 melt 的增加的 Ce 的增加改善,离开主要的硅的最容易溶解的硅上的修正的效果在到主要的硅的最容易溶解的硅结束上是比那更明显的。修正机制借助于扫描详细被分析电子显微镜与精力装备了 X 光检查和热力学分析的散分析,它在反应和反应平衡的标准吉布斯精力在变化上包括了分析。ZHANG Henghua DUAN Haili SHAO Guangjie XU Luoping YIN Junlin YAN Biao 2006Rare Metals2006,25,1:23
3Thiolactone copolymer donor gifts organic solar cells a 16.72% efficiency显示文摘Since 1995,bulk-heterojunction organic solar cells consisting of one or two organic donors and one or two organic acceptors have been fighting for high power conversion efficiencies(PCEs)and good stability[1].Until recent years,this next-generation photovoltaic technology starts to offer decent PCEs,shedding the light on commercialization,and attracting great attention again[2-14].Compared w让h the continuously emerging highperformance nonfullerene acceptors,high-performance donors are rare.Ji Xiong Ke Jin Yufan Jiang Jianqiang Qin Tan Wang Jinfeng Liu Qishi Liu Haili Peng Xiongfeng Li Anxin Sun Xianyi Meng Lixiu Zhang Ling Liu Wenting Li Zhimin Fang Xue Jia Zuo Xiao Yaqing Feng Xiaotao Zhang Kuan Sun Shangfeng Yang Shengwei Shi Liming Ding 2019Science Bulletin2019,64,21:17
4The Arabidopsis PARAQUAT RESISTANT2 gene encodes an S-nitrosoglutathione reductase that is a key regulator of cell death显示文摘S-nitrosoglutathione (GSNO ) 的新陈代谢,主要生物学上活跃的氮的氧化物(没有) 种类,被进化地保存的 GSNO reductase (GSNOR ) 催化。以前的研究证明 Arabidopsis GSNOR1/HOT5 基因调整水杨酸酸由 modulating 发信号和 thermotolerance 细胞内部的 S-nitrosothiol 水平。这里,我们报导 Arabidopsis paraquat resistant2-1 (par2-1 ) 的描述显示出反房间死亡显型的异种。当由 paraquat (1,1'-dimethyl-4,4'-bipyridinium 二氯化物) 对待时,在 par2-1 的 superoxide 的生产比得上野类型的植物的,建议 PAR2 调整房间死亡的 superoxide 下游地行动。PAR2,由位置的克隆识别了,被显示与 GSNOR1/HOT5 相同。par2-1 异种在高度保存的 glycine 带一个错误感觉变化,它使变异的蛋白质变为不稳定。比作野类型, par2-1 异种有一不更高铺平,由与 4,5-diaminofluorescein diacetate 染色揭示了。与这结果一致,对待与的野类型的植物一没有施主显示抵抗到 paraquat。有趣地, GSNOR1/HOT5/PAR2 蛋白质水平除它的不变的 mRNA 水平以外,被 paraquat 导致,但是被没有施主减少。一起拿,这些结果建议 GSNOR1/HOT5/PAR2 在通过 modulating 在植物房间调整房间死亡起一个重要作用细胞内部没有水平。Ruiqiang Chen Shulan Sun Chun Wang Yansha Li Yan Liang Fengying An Chao Li Haili Dong Xiaohui Yang Jian Zhang Jianru Zuo 2009Cell Research2009,19,12:14
5Recent advances in the synthesis of hierarchically mesoporous TiO2 materials for energy and environmental applications显示文摘Because of their low cost,natural abundance,environmental benignity;plentiful polymorphs,good chemical stability and excellent optical properties,TiO2 materials are of great importance in the areas of physics;chemistry and material science.Much effort has been devoted to the synthesis of TiO2 nanomaterials for various applications.Among them,mesoporous TiO2 materials,especially with hierarchically porous structures;show great potential owing to their extraordinarily high surface areas,large pore volumes,tunable pore structures and morphologies,and nanoscale effects.This review aims to provide an overview of the synthesis and applications of hierarchically mesoporous TiO2 materials.In the first section,the general synthetic strategies for hierarchically mesoporous TiO2 materials are reviewed.After that;we summarize the architectures of hierarchically mesoporous TiO2 materials,including nanofibers,nanosheets,microparticles,films;spheres,core-shell and multi-level structures.At the same time,the corresponding mechanisms and the key factors for the controllable synthesis are highlighted.Following this,the applications of hierarchically mesoporous TiO2 materials in terms of energy storage and environmental protection,including photocatalytic degradation of pollutants,photocatalytic fuel generation,photoelectrochemical water splitting;catalyst support,lithium-ion batteries and sodium-ion batteries,are discussed.Finally,we outline the challenges and future directions of research and development in this area.Wei Zhang Yong Tian Haili He Li Xu Wei Li Dongyuan Zhao 2020National Science Review2020,7,11:12
6Involvement of sphingoid bases in mediating reactive oxygen intermediate production and programmed cell death in Arabidopsis显示文摘Sphingolipids 被建议了在植物房间为一连串的细胞的发信号活动充当第二个送信人,包括压力回答并且规划了房间死亡(PCD ) 。然而,这些过程不是的机制 underpinning 很好理解。这里,我们报导那 Arabidopsis 异种, fumonisin B1 抵抗 11-1 ( fbr 11-1 )没能产生反应的氧中介( ROI ),不能当异种被 fumonisin B ( 1 )( FB ( 1 ))质问时,开始 PCD , ceramide synthase 的一个特定的禁止者。显示的分子的分析 FBR11 编码一个长链的底 1 (LCB1 ) 丝氨酸 palmitoyltransferase (SPT ) 的子单元,它催化 de novo sphingolipid 的第一限制率的步合成。sphingolipid 集中的集体度谱的分析表明而 fbr 11-1 变化没影响 sphingoid 底的基础层次,异种响应 FB (1 ) 显示出 sphingoid 底的稀释形成。由一个直接的喂实验,我们证明免费 sphingoid 底 dihydrosphingosine, phytosphingosine 和鞘氨醇高效地导致产生由房间死亡跟随了的 ROI。相反地, dihydrosphingosine 导致的 ROI 产生和房间死亡被它的 phosphorylated 形式 dihydrosphingosine-1-phosphate 明确地以一种剂量依赖者方式堵住,建议在一个免费 sphingoid 底和它的 phosphorylated 衍生物之间的动态平衡的维护对决定房间命运批评。因为 sphingolipid 水平的改变发生在 ROI 生产以前,我们建议免费 sphingoid 库在 Arabidopsis 涉及 PCD 的控制,大概在收到不同发展或环境的暗示之上通过 ROI 的规定铺平。Lihua Shi Jacek Bielawski Jinye Mu Haili Dong Chong Teng Jian Zhang Xiaohui Yang Nario Tomishige Kentaro Hanada Yusuf A Hannun Jianru Zuo 2007Cell Research2007,17,12:12
7Resveratrol attenuates bone cancer pain through regulating the expression levels of ASIC3 and activating cell autophagy显示文摘骨头癌症疼痛(BCP ) 是在有恶意的癌症的病人的最普通的疼痛之一。位于 BCP 下面的机制大部分是未知的。我们的以前的研究和增加的证据两个都显示出那个酸察觉到的离子隧道(ASIC3 ) 3 是处于在一些疼痛模型的病理学的疼痛状态的重要蛋白质。我们假设了 ASIC3 的表示变化可能是与 BCP 有关的因素之一。在这研究,我们通过 intrathecally 把老鼠乳腺癌房间(MRMT-1 ) 注入 Sprague-Dawley 雌老鼠的左胫骨建立了 BCP 模型,并且发现 BCP 老鼠在 L4-L6 背面的根中心显示出骨头破坏,增加的机械疼痛敏感和起来调整的 ASIC3 蛋白质表示层次。然后, resveratrol, intraperitoneally 在手术后的白天 21 上被注入 BCP 老鼠, dose-dependently 增加了 BCP 老鼠的爪退却阀值,颠倒了疼痛行为,并且有 BCP 老鼠上的 antinociceptive 效果。在 ASIC3-transfected SH-SY5Y 房间, ASIC3 蛋白质表示层次被 resveratrol 在一个剂量依赖者和时间依赖者举止调整。同时, resveratrol 也在调停 ASIC3 的疼痛老鼠模型有 antinociceptive 效果。而且, resveratrol 也在 ASIC3-transfected SH-SY5Y 房间提高了 AMPK, SIRT1,和 LC3-II 层次的 phosphorylation,显示 resveratrol 能激活在 ASIC3-transfected SH-SY5Y 房间的 AMPK-SIRT1-autophagy 信号小径。在 BCP 老鼠, SIRT1 和 LC3-II 也是下面调整的。这些调查结果在 BCP 状态期间作为一个治疗学的处理为 resveratrol 的使用提供新证据(?作者 2017。代表生物化学和房间生物学的研究所由牛津大学出版社出版了,为生物科学的上海研究所,中国科学院。版权所有。为权限,请发邮件:journals.permissions@oup.com。)Haili Zhu Jieqiong Ding Ji Wu Tingting Liu Jing Liang Qiong Tang Ming Jiao 2017Acta Biochimica et Biophysica Sinica2017,49,11:12
8Overcoming HBV immune tolerance to eliminate HBsAg-positive hepatocytes via pre-administration of GM-CSF as a novel adjuvant for a hepatitis B vaccine in HBV transgenic mice显示文摘尽管有矛盾的结果, Granulocyte 巨噬细胞刺激殖民地的因素(GM-CSF ) 从动物和人的研究被知道是一个潜在的疫苗的助手。差异可能由于被使用的 GM-CSF 的不同剂量和政体,给那成熟或不成熟的树枝状的房间(DC ) 能在不同条件下面被导致。为了测试假设,那 GM-CSF 能为一个肝炎 B 病毒(HBV ) 被用作一个新奇助手治疗学的疫苗,我们与 recombinant HBV 疫苗(rHBVvac ) 在种痘以前每天管理了 GM-CSF 一次三天在老鼠。我们在作为与白天 1 每日的 GM-CSF 管理或白天 2 相比的白天 3 点在这些预先对待的动物观察了更大的 DC 成熟。这策略进一步为它打破在肝炎 B 表面建立的有免疫力的忍耐的能力被调查抗原转基因(HBsAg-Tg ) 动物。我们发现导致的 anti-HBsAg 抗体的层次在在第三免疫以后在 rHBV 种痘前跟随三天 GM-CSF 预告的处理的动物是显著地更高的。除了 anti-HBsAg 抗体层次的增加,调停房间的 anti-HBsAg 回答包括延期类型超敏性, T 房间增长, interferon-γ生产,和细胞毒素的 T 淋巴细胞,戏剧性地在三天的 GM-CSF 被提高预先对待的组。在从使免疫的动物的 CD8 + T 房间的采纳转移以后,抗原特定的 CD8 + T 房间在接受者 HBsAg-Tg 动物的肝被观察。而且,有在 rHBVvac 种痘以前的 GM-CSF 的三天的预告的处理能显著地消除 HBsAg 积极的 hepatocytes,建议有益的治疗学的效果。因此,与 rHBVvac 疫苗在联合作为一个助手利用 GM-CSF 的这个协议有潜力为长期的肝炎 B 病人成为新奇免疫疗法。Xianzheng Wang Aihua Dong Jingjing Xiao Xingjun Zhou Haili Mi Hanqian Xu Jiming Zhang Bin Wang 2016Cellular & Molecular Immunology2016,13,6:11
9Recently duplicated sesterterpene(C25) gene clusters in Arabidopsis thaliana modulate root microbiota显示文摘Land plants co-speciate with a diversity of continually expanding plant specialized metabolites(PSMs) and root microbial communities(microbiota).Homeostatic interactions between plants and root microbiota are essential for plant survival in natural environments.A growing appreciation of microbiota for plant health is fuelling rapid advances in genetic mechanisms of controlling microbiota by host plants.PSMs have long been proposed to mediate plant and single microbe interactions.However,the effects of PSMs,especially those evolutionarily new PSMs,on root microbiota at community level remain to be elucidated.Here,we discovered sesterterpenes in Arabidopsis thaliana,produced by recently duplicated prenyltransferase-terpene synthase(PT-TPS) gene clusters,with neo-functionalization.A single-residue substitution played a critical role in the acquisition of sesterterpene synthase(sesterTPS) activity in Brassicaceae plants.Moreover,we found that the absence of two root-specific sesterterpenoids,with similar chemical structure,significantly affected root microbiota assembly in similar patterns.Our results not only demonstrate the sensitivity of plant microbiota to PSMs but also establish a complete framework of host plants to control root microbiota composition through evolutionarily dynamic PSMs.Qingwen Chen Ting Jiang Yong-Xin Liu Haili Liu Tao Zhao Zhixi Liu Xiangchao Gan Asis Hallab Xuemei Wang Juan He Yihua Ma Fengxia Zhang Tao Jin M. Eric Schranz Yong Wang Yang Bai Guodong Wang 2019Science China(Life Sciences)2019,62,7:11
10Seismic response analysis of road vehicle-bridge system for continuous rigid frame bridges with high piers显示文摘The objective of this study is to investigate the effects of earthquakes on road vehicle-bridge coupling vibration systems. A two-axle highway freight vehicle is treated as a 13 degree-of-freedom system composed of several rigid bodies, which are connected by a series of springs and dampers. The framework of the earthquake-vehicle-bridge dynamic analysis system is then established using an earthquake as the external excitation. The equivalent lateral contact force serves as the judgment criteria for sideslip accidents according to reliability theory. The entire process of the vehicle crossing the bridge is considered for a very high pier continuous rigid frame bridge. The response characteristics of the vehicle and the bridge are discussed in terms of various parameters such as earthquake ground motion, PGA value of the earthquake, incident angle, pier height, vehicle speed and mass. It is found that seismic excitation is the most influential factor in the responses of the vehicle-bridge system and that the safety of vehicles crossing the bridge is seriously impacted by the dual excitations of earthquake and bridge vibration.Li Yongle Chen Ning Zhao Kai Liao Haili 2012Earthquake Engineering and Engineering Vibration2012,11,4:9
11Resveratrol suppresses bone cancer pain in rats by attenuating inflammatory responses through the AMPK/Drp1 signaling显示文摘Bone cancer pain(BCP)is induced by primary bone cancer and secondary bone metastasis.During BCP pathogenesis,activated spinal astrocytes release proinflammatory cytokines,which participate in pain information transmission.In this study,we found that BCP rats showed disruption of trabecular bone structure,mechanical allodynia,and spinal inflammation.Moreover,reduced adenosine monophosphate-activated protein kinase(AMPK)activity,increased mitochondrial fission-associated protein Drp1 GTPase activity accompanied by the dysfunction of mitochondrial function,and abnormal BAX and Bcl-2 expression were found in the spinal cord of BCP rats.Notably,these alterations are reversed by resveratrol(Res)administration.Cell experiment results demonstrated that Res promotes mitochondrial function by activating AMPK,decreasing Drp1 activity,and inhibiting tumor necrosis factor-cα-induced mitochondrial membrane potential reduction.Taken together,these results indicate that Res suppresses BCP in rats by attenuation of the inflammatory responses through the AMPK/Drp1 signaling pathway.Miaomiao Hao Qiong Tang Banghua Wang Yisheng Li Jieqiong Ding Mingyue Li Min Xie Haili Zhu 2020Acta Biochimica et Biophysica Sinica2020,52,3:8
12The Arabidopsis Spontaneous Cell Death1 gene, encoding a ζ-carotene desaturase essential for carotenoid biosynthesis, is involved in chloroplast development, photoprotection and retrograde signalling显示文摘Carotenoids, a class of natural pigments found in all photosynthetic organisms, are involved in a variety of physiologi-cal processes, including coloration, photoprotection, biosynthesis of abscisic acid (ABA) and chloroplast biogenesis.Although carotenoid biosynthesis has been well studied biochemically, the genetic basis of the pathway is not wellunderstood. Here, we report the characterization of two allelic Arabidopsis mutants, spontaneous cell death 1-1 (spcl-1)and spcl-2. The weak allele spcl-1 mutant showed characteristics of bleached leaves, accumulation of superoxide andmosaic cell death. The strong mutant allele spcl-2 caused a complete arrest of plant growth and development shortlyafter germination, leading to a seedling-lethal phenotype. Genetic and molecular analyses indicated that SPC1 encodesa putative ζ-carotene desaturase (ZDS) in the carotenoid biosynthesis pathway. Analysis of carotenoids revealed thatseveral major carotenoid compounds downstream of SPC1/ZDS were substantially reduced in spcl-1, suggesting thatSPC1 is a functional ZDS. Consistent with the downregulated expression of CAO and PORB, the chlorophyll contentwas decreased in spcl-1 plants. In addition, expression of Lhcb1.1, Lhcb1.4 and RbcS was absent in spcl-2, suggestingthe possible involvement of carotenoids in the plastid-to-nucleus retrograde signaling. The spcl-1 mutant also displaysan ABA-deficient phenotype that can be partially rescued by the externally supplied phytohormone. These results suggestthat SPC1/ZDS is essential for biosynthesis of carotenoids and plays a crucial role in plant growth and development.Haili Dong Yan Deng Jinye Mu Qingtao Lu Yiqin Wang Yunyuan Xu Chengcai Chu Kang Chong Congming Lu Jianru Zuo 2007Cell Research2007,17,5:8
13Visible-light photocatalytic activity and mechanism of novel AgBr/BiOBr prepared by deposition-precipitation显示文摘A new composite photocatalyst AgBr/BiOBr was prepared by loading AgBr on a BiOBr substrate via deposition-precipitation and characterized by X-ray diffraction,scanning electron microscopy,high-resolution transmission electron microscopy and UV-vis diffuse reflectance spectroscopy.The as-prepared AgBr/BiOBr comprised face-centered cubic AgBr and tetragonal BiOBr particles.The average crystalline sizes of AgBr in the AgBr/BiOBr composites were less than 28.5 nm.The absorption edges of AgBr/BiOBr in visible-light region had a red shift with increasing AgBr content.Photocatalytic degradation of methyl orange results show that the AgBr/BiOBr composites could degrade methyl orange efficiently under visible-light irradiation (λ>420 nm).The optimal molar percentage of AgBr was 50 mol% with corresponding maximum k app of 0.00619 min -1.Active ·O 2- played a major role for methyl orange degradation while h + and ·OH had little effect on the photocatalytic process.The enhancement of photocatalytic activity of AgBr/BiOBr is mainly ascribed to the heterojunction effect between AgBr and BiOBr.LIN HaiLi CAO Jing LUO BangDe XU BenYan CHEN ShiFu 2012Chinese Science Bulletin2012,57,22:8
14The 2020 Summer Floods and 2020/21 Winter Extreme Cold Surges in China and the 2020 Typhoon Season in the Western North Pacific显示文摘China experienced significant flooding in the summer of 2020 and multiple extreme cold surges during the winter of 2020/21.Additionally,the 2020 typhoon season had below average activity with especially quiet activity during the first half of the season in the western North Pacific(WNP).Sea surface temperature changes in the Pacific,Indian,and Atlantic Oceans all contributed to the heavy rainfall in China,but the Atlantic and Indian Oceans seem to have played dominant roles.Enhancement and movement of the Siberian High caused a wavier pattern in the jet stream that allowed cold polar air to reach southward,inducing cold surges in China.Large vertical wind shear and low humidity in the WNP were responsible for fewer typhoons in the first half of the typhoon season.Although it is known that global warming can increase the frequency of extreme weather and climate events,its influences on individual events still need to be quantified.Additionally,the extreme cold surge during 16–18 February 2021 in the United States shares similar mechanisms with the winter 2020/21 extreme cold surges in China.Chunzai WANG Yulong YAO Haili WANG Xiubao SUN Jiayu ZHENG 2021Advances in Atmospheric Sciences2021,38,6:8
15Ethylene glycol-assisted synthesis, photoelectrochemical and photocatalytic properties of BiOI microflowers显示文摘Hierarchical bismuth oxyiodide(BiOI) microflower photocatalysts were synthesized by hydrolysis at room temperature. The concentration of ethylene glycol modulated the resulting BiOI morphology. The morphology, elemental composition, crystal phase structure, and absorption properties of the BiOI samples were characterized. Under visible light irradiation(k [ 400 nm), BiOI(S10) with a microflower morphology exhibited the highest photocatalytic activity in the degradation of methyl orange. The corresponding apparent pseudo-first-order rate constant was 0.826 h-1. The trend in photocatalytic activities of the prepared BiOI samples coincided with the trend in their photocurrents. A strategy for preparing hierarchical BiOI microflowers with good visible lightinduced photocatalytic activity is provided.Haili Lin Chunchun Zhou Jing Cao Shifu Chen 2014Chinese Science Bulletin2014,59,27:7
16Cloning and bioinformatics analysis of a full-length cDNA of porcine CRl-like gene显示文摘Jing Cheng Junbing Jiang Junxing Zhao Zhirui Wang Yaogui Sun Haili Ma Kuohai Fan Wei Yin Na Sun Zhiwei Wang Xin Zhao Hongquan Li 2014Acta Biochimica et Biophysica Sinica2014,46,11:7
17Influence of aerodynamic configuration of a streamline box girder on bridge flutter and vortex-induced vibration显示文摘Streamline box girders are widely applied in the design and construction of long-span bridges all over the world.In order to study the influence of modifications of aerodynamic configuration and accessory components on flutter and vortex-induced vibration(VIV),more than 60 cases were tested through a 1?50 scale section model.The test results indicates that the aerodynamic configuration and accessory components of streamline box girders can signifi-cantly affect the wind-induced vibration of bridge,which is in good agreement with the experience of past researchers.From the tests carried out,it is observed that if the horizontal angle of the inclined web of the streamline box girder is below 16°,the critical flutter wind speed of bridge will increase remarkably,and the VIV will diminish.The test results also show that the 15° inclined web can restrain the formation of vortex near the tail,and consequently improve the performance of aerodynamic stability of long-span bridges.Finally,a new streamline box girder with 15° inclined web was presented and strongly recommended in the aerodynamic configuration design of long-span bridges.Qi WANG Haili LIAO Mingshui LI Cunming MA 2011Journal of Modern Transportation2011,19,4:7
18Fenton-like degradation of Methylene Blue using paper mill sludge-derived magnetically separable heterogeneous catalyst:Characterization and mechanism显示文摘For the paper industry, the disposal and management of the yielded sludge are a considerable challenge. In our work, the paper mill sludge-derived magnetically separable heterogeneous catalyst(PMS-Fe-380) was prepared easily through a facile synthesis method. The morphology and structure of PMS-Fe-380 were fully characterized by means of X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and Brunauer–Emmet–Teller analysis. The catalytic activity of PMS-Fe-380 was evaluated by degradation of Methylene Blue(MB). The reusability and stability of PMS-Fe-380 were evaluated in five repeated runs, which suggested that PMS-Fe-380 manifested excellent stability of catalytic activity. Moreover,leaching tests indicated that the leached iron is negligible(<0.5 mg/L). This study provides an alternative environmentally friendly reuse method for paper mill sludge and a novel catalyst PMS-Fe-380 that can be considered as a promising heterogeneous Fenton-like catalyst.Guoqiang Zhou Ziwen Chen Fei Fang Yuefeng He Haili Sun Huixiang Shi 2015Journal of Environmental Sciences2015,27,9:6
19Upwelling and anthropogenic forcing on phytoplankton productivity and community structure changes in the Zhejiang coastal area over the last 100 years显示文摘Phytoplankton productivity and community structure in marginal seas have been altered significantly during the past three decades, but it is still a challenge to distinguish the forcing mechanisms between climate change and anthropogenic activities. High time-resolution biomarker records of two 210Pb-dated sediment cores(#34: 28.5°N, 122.272°E; CJ12-1269: 28.861 9°N, 122.515 3°E) from the Min-Zhe coastal mud area were compared to reveal changes of phytoplankton productivity and community structure over the past 100 years. Phytoplankton productivity started to increase gradually from the 1970 s and increased rapidly after the late 1990 s at Site #34; and it started to increase gradually from the middle 1960 s and increased rapidly after the late 1980 s at Site CJ12-1269. Productivity of Core CJ12-1269 was higher than that of Core #34. Phytoplankton community structure variations displayed opposite patterns in the two cores. The decreasing D/B(dinosterol/brassicasterol) ratio of Core #34 since the 1960 s revealed increased diatom contribution to total productivity. In contrast, the increasing D/B ratio of Core CJ12-1269 since the 1950 s indicated increased dinoflagellate contribution to total productivity. Both the productivity increase and the increased dinoflagellate contribution in Core CJ12-1269 since the 1950–1960s were mainly caused by anthropogenic activities, as the location was closer to the Changjiang River Estuary with higher nutrient concentration and decreasing Si/N ratios. However, increased diatom contribution in Core #34 is proposed to be caused by increased coastal upwelling, with higher nutrient concentration and higher Si/N ratios.DUAN Shanshan XING Lei ZHANG Hailong FENG Xuwen YANG Haili ZHAO Meixun 2014Acta Oceanologica Sinica2014,33,10:5
20Characteristics of highly differentiated granite and metallization of tungsten-tin, rare and rare earth metal in the eastern Nanling region, China显示文摘1 Introduction Massive tungsten-tin,rare and rare earth metals ore deposits were formed with the widespread granite magmatic activity in early Yanshanian period in the eastern Nanling region.Recent studies indicate that the Yanshanian highly differentiated-granite formation is closely related to the deposits of tungsten and tin,rare and rare earth metals mineralization in theXIAO Huiliang CHEN Lezhu FAN Feipeng LI Haili BAO Xiaoming YAO Zhenghong ZHOU Yan CAI Yitao 2017Acta Geologica Sinica(English Edition)2017,91,S1:5
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