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Responding of zooplankton to environmental factor changes in the Changjiang River estuarine regions in spring-summer from 2016 to 2020

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Journal of Oceanology and Limnology 2024年第2期42卷 544-559页

作者： Jieqing YANG Dongrong ZHANG Yuange CHEN Longling OUYANG Yangyang YANG Jin ZHOU Yunrong SHI East china Sea Fisheries Research Institute Chinese Academy of Fishery SciencesKey Laboratory of East China Sea Fishery Resources ExploitationMinistry of Agriculture and Rural AffairsShanghai 200090China Key Laboratory of Engineering Oceanography Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China College of Marine Ecology and Environment Shanghai Ocean UniversityShanghai 201306China

The estuarine areas are under frequent influence from freshwater intrusion and ocean currents,in which zooplankton species are diversified and variable as they are sensitive to physio-chemical variations in ***,understanding the relationships between zooplankton and environmental factors help us know the water *** achieve co-existence with species in similar ecological group or habit,they could inevitably alter themselves to fit the ecology and adjust the function according to the competitive exclusion in ecological ***,information of the co-existence of dominant species in the Changjiang(Yangtze)River estuary(CRE)and adjacent waters remains *** explored the relationships between dominant zooplankton and environmental factors in the study region in spring-summer from 2016 to 2020,involving particularly the composition of dominant species,ecological groups,their relationships with environmental factors,and co-existence of important species,using the non-multidimensional scale analysis(nMDS)method and redundancy *** show that Labidocera euchaeta and Tortanus vermiculus were dominant species in the study *** turnover rate of dominant zooplankton was greater(>50%)in spring while the species number was higher in *** dominant species were estuarine,offshore,and eurytopic based on the adaptation to *** spring,the ecological groups were dominated by estuarine species,while in summer by estuarine and offshore *** addition,the nMDS showed that the dominant species in the same ecological group were more dispersed and not prominently clustered;the dominant species were staggered among different ecological *** temperature,salinity,pH,dissolved oxygen,and chlorophyll a were the main environmental factors on the distribution of the dominant species in spring,while in summer were dissolved oxygen,temperature,salinity,and *** domination of medusae of Nemopsis bachei and Pleurobrachia globosa in zo

关键词： Changjiang River estuary(CRE) zooplankton dominant species ecological group environmental factor co-existence

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Constructing Built-In Electric Fields with Semiconductor Junctions and Schottky Junctions Based on Mo-MXene/Mo-Metal Sulfides for Electromagnetic Response

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Nano-Micro Letters 2024年第10期16卷 453-473页

作者： Xiaojun Zeng Xiao Jiang Ya Ning Yanfeng Gao Renchao Che School of Materials Science and Engineering Jingdezhen Ceramic UniversityJingdezhen 333403People's Republic of China School of Materials Science and Engineering Shanghai UniversityShanghai 200444People's Republic of China Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsAcademy for Engineering and TechnologyFudan UniversityShanghai 200438People's Republic of China Zhejiang Laboratory Hangzhou 311100People's Republic of China

The exploration of novel multivariate heterostructures has emerged as a pivotal strategy for developing high-performance electromagnetic wave(EMW)absorption ***,the loss mechanism in traditional heterostructures is relatively simple,guided by empirical observations,and is not *** this work,we presented a novel semiconductor-semiconductor-metal heterostructure sys-tem,Mo-MXene/Mo-metal sulfides(metal=Sn,Fe,Mn,Co,Ni,Zn,and Cu),including semiconductor junctions and Mott-Schottky *** skillfully combining these distinct functional components(Mo-MXene,MoS_(2),metal sulfides),we can engineer a multiple heterogeneous interface with superior absorption capabilities,broad effective absorption bandwidths,and ultrathin matching *** successful establishment of semiconductor-semiconductor-metal heterostructures gives rise to a built-in electric field that intensifies electron transfer,as confirmed by density functional theory,which collaborates with multiple dielectric polarization mechanisms to substantially amplify EMW *** detailed a successful synthesis of a series of Mo-MXene/Mo-metal sulfides featuring both semiconductor-semiconductor and semiconductor-metal *** achievements were most pronounced in Mo-MXene/Mo-Sn sulfide,which achieved remarkable reflection loss values of-70.6 dB at a matching thickness of only 1.885 *** cross-section calculations indicate that these MXene/Mo-metal sulfides have tremendous potential in practical military stealth *** work marks a departure from conventional component design limitations and presents a novel pathway for the creation of advanced MXene-based composites with potent EMW absorption capabilities.

关键词： Semiconductor-semiconductor-metal heterostructure Semiconductor junctions Mott-Schottky junctions Built-in electric field Electromagnetic wave absorption

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Genomic evolution and insights into agronomic trait innovations of Sesamum species

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Plant Communications 2024年第1期5卷 262-283页

作者： Hongmei Miao Lei Wang Lingbo Qu Hongyan Liu Yamin Sun Meiwang Le Qiang Wang Shuangling Wei Yongzhan Zheng Wenchao Lin Yinghui Duan Hengchun Cao Songjin Xiong Xuede Wang Libin Wei Chun Li Qin Ma Ming Ju Ruihong Zhao Guiting Li Cong Mu Qiuzhen Tian Hongxian Mei Tide Zhang Tongmei Gao Haiyang Zhang Henan Sesame Research Center Henan Academy of Agricultural SciencesZhengzhou 450002China TEDA School of Biological Sciences and Biotechnology Nankai UniversityTianjin 300457China College of Food Science and Technology Henan Technology UniversityZhengzhou 450001China Institute of Plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450002China Crops Research Institute Jiangxi Academy of Agricultural SciencesNanchang 330200China Crop Research Institute Anhui Academy of Agricultural SciencesHefei 230031China

Sesame is an ancient oilseed crop with high oil content and ***,the evolutionary history and genetic mechanisms of its valuable agronomic traits remain ***,we report chromosome-scale genomes of cultivated sesame(Sesamum indicum L.)and six wild Sesamum species,representing all three karyotypes within this *** and genome-based phylogenic analysis revealed the evolutionary route of Sesamum species from n=13 to n=16 and revealed that allotetraploidization occurred in the wild species Sesamum *** divergence of the Sesamum genus(48.5–19.7 million years ago)during the Tertiary period and its ancient phylogenic position within eudicots were ***-genome analysis revealed 9164 core gene families in the *** families are significantly enriched in variousmetabolic pathways,including fatty acid(FA)metabolism and FA *** variations in SiPT1 and SiDT1 within the phosphatidyl ethanolamine-binding protein gene family lead to the genomic evolution of plant-architecture and inflorescence-development phenotypes in Sesamum.A genome-wide association study(GWAS)of an interspecific population and genome comparisons revealed a long terminal repeat insertion and a sequence deletion inDIR genes of wildSesamum angustifoliumand cultivated sesame,respectively;both variations independently cause high susceptibility toFusariumwilt disease.A GWAS of 560 sesame accessions combined with an overexpression study confirmed that the NAC1andPPOgenes play an important role in upregulating oil content of *** study provides high-quality genomic resources for cultivated and wild Sesamum species and insights that can improve molecular breeding strategies for sesame and other oilseed crops.

关键词： Sesamum genome evolution structural variation plant architecture Fusarium wilt disease oil content

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NiS ultrafine nanorod with translational and rotational symmetry

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National Science Review 2024年第7期11卷 218-225页

作者： Jianxin Kang Qi Hu Ruixuan Zhang Ang Gao Zhongning Huang Ziming Su Ke Pei Qinghua Zhang Li-Min Liu Renchao Che Lin Gu Er-Jia Guo Lin Guo School of Chemistry Beihang University Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative Materials Academy for Engineering&Technology Fudan University Zhejiang Laboratory Beijing National Center for Electron Microscopy and Laboratory of Advanced Materials School of Materials Science and Engineering Tsinghua University Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences School of Physics Beihang University

Anisotropy is a significant and prevalent characteristic of materials, conferring orientation-dependent properties, meaning that the creation of original symmetry enables key functionality that is not found in nature. Even with the advancements in atomic machining, synthesis of separated symmetry in different directions within a single structure remains an extraordinary challenge. Here, we successfully fabricate NiS ultrafine nanorods with separated symmetry along two directions. The atomic structure of the nanorod exhibits rotational symmetry in the radial direction, while its axial direction is characterized by divergent translational symmetry, surpassing the conventional crystalline structures known to date. It does not fit the traditional description of the space group and the point group in three dimensions, so we define it as a new structure in which translational symmetry and rotational symmetry are separated. Further corroborating the atomic symmetric separation in the electronic structure, we observed the combination of stripe and vortex magnetic domains in a single nanorod with different directions, in accordance with the atomic *** manipulation of nanostructure at the atomic level introduces a novel approach to regulate new properties finely, leading to the proposal of new nanotechnology mechanisms.

关键词： separated symmetry NiS anisotropy structure atomic machining magnetic domain

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Mechanical Behavior and Failure Mechanism of an As-Extruded Mg-11wt%Y Alloy at Elevated Temperature

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Acta Metallurgica Sinica(English Letters) 2024年第6期37卷 969-981页

作者： Lan Zhang Dao-Kui Xu Bao-Jie Wang Cui-Lan Lu Shuo Wang Xiang-Bo Xu Dong-Liang Wang Xin Lv En-Hou Han School of Materials Science and Engineering University of Science and Technology of ChinaShenyang110016China Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of SciencesShenyang110016China School of Environmental and Chemical Engineering Shenyang Ligong UniversityShenyang110159China Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang110819China Institute of Corrosion Science and Technology Guangdong510070China

Through carrying out the high-temperature tensile experiments on an as-extruded Mg-11wt%Y alloy at 350℃,400℃,450℃,500℃and 550℃,the mechanical behavior and fracture mechanisms at elevated temperatures are investigated and *** results show that with the increase of temperature,the yield strength and ultimate tensile strength of the alloy increase at first and then decrease,while that the elongation ratio decreases firstly and then *** the sample being tested at 350℃,the values of yield strength,ultimate tensile strength and the elongation ratio are 188 MPa,266 MPa and 11%,*** 400℃,the yield strength and ultimate tensile strength reach the maximum values of,respectively,198 MPa and 277 MPa,but the elongation ratio is the lowest and its value is only 8%.When the applied temperature is increased to 550℃,the values of yield strength and ultimate tensile strength,respectively,decrease to 140 MPa and 192 MPa and the elongation ratio increases to 38%.Failure analysis demonstrates that the fracture surfaces of different samples are mainly composed of plastic dimples and exhibit the typical characteristic of ductile *** observation to the fracture side surfaces indicates that at the temperatures of 350℃and 400℃,microcracks mainly initiate in the interior of Mg_(24)Y_(5)*** the temperatures are 450℃,500℃and 550℃,the cracks preferentially initiate at the Mg_(24)Y_(5)/α-Mg interfaces.

关键词： Mg-Y alloy High-temperature tensile properties Fracture mechanism Failure analysis

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FERROFLUID CONTAINING SOLUBLE CONDUCTIVE POLYANILINE AND ITS FREESTANDING FILMS

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Chinese Journal of Polymer Science 2003年第3期21卷 271-276页

作者：万梅香 Organic Solid Laboratory Centerfor Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100080 China

Ferrofluid containing highly conductive polyaniline (PANI) was prepared, in which soluble PANI solutions dopedwith 10-camphorsulfonic acid (CSA) and dodecyl benzenesulfonic acid (DBSA) were used as the basic solution and Fe_3O_4nanoparticles (d = 10 nm) as the magnetic material. Moreover, the freestanding films of the resulting ferrofluid can beobtained by an evaporation method. The electrical and magnetic properties of the ferrofluid or its films can be adjustedthrough changing the content of PANI and Fe_3O_4. High saturated magnetization (≈ 30 emu/g) and high conductivity(≈ 250 S/cm) of the composite films can be achieved when the composite film contains 26.6 wt% of Fe_3O_4. In particular, itwas found that the composite films exhibit a super-paramagnetic behavior (Hc = 0) attributed to the size of Fe_3O_4 particles on the nanometer scale.

关键词： Ferrofluid Polyaniline Electrical and magnetic properties Soluble conducting polymers

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Implications of left atrial volume index in patients with three-vessel coronary disease:A 6.6-year follow-up cohort study

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Chinese Medical Journal 2024年第4期137卷 441-449页

作者： Ru Liu Lei Song Ce Zhang Lin Jiang Jian Tian Lianjun Xu Xinxing Feng Linyuan Wan Xueyan Zhao Ou Xu Chongjian Li Runlin Gao Rutai Hui Wei Zhao Jinqing Yuan Department of Cardiology Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Department of Respiratory and Pulmonary Vascular Disease Fuwai Yunnan Cardiovascular HospitalKunmingYunnan 650102China Department of Endocrinology Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Department of Echocardiography Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China Information Center Fuwai HospitalChinese Academy of Medical SciencesBeijing 100037China

Background:Risk assessment and treatment stratification for three-vessel coronary disease(TVD)remain *** study aimed to investigate the prognostic value of left atrial volume index(LAVI)with the Synergy Between Percutaneous Coronary Intervention with Taxus and Cardiac Surgery(SYNTAX)score II,and its association with the long-term prognosis after three strategies(percutaneous coronary intervention[PCI],coronary artery bypass grafting[CABG],and medical therapy[MT])in patients with ***:This study was a post hoc analysis of a large,prospective cohort of patients with TVD in china,that aimed to determine the long-term outcomes after PCI,CABG,or optimal MT alone.A total of 8943 patients with TVD were consecutively enrolled between 2004 and 2011 at Fuwai Hospital.A total of 7818 patients with available baseline LAVI data were included in the ***,procedural,and follow-up data were *** primary endpoint was major adverse cardiac and cerebrovascular events(MACCE),which was a composite of all-cause death,myocardial infarction(MI),and *** endpoints included all-cause death,cardiac death,MI,revascularization,and ***-term outcomes were evaluated among LAVI quartile ***:During a median follow-up of 6.6 years,a higher LAVI was strongly associated with increased risk of MACCE(Q3:hazard ratio[HR]1.20,95%confidence interval[CI]1.06-1.37,P=0.005;Q4:HR 1.85,95%CI 1.64-2.09,P<0.001),all-cause death(Q3:HR 1.41,95%CI 1.17-1.69,P<0.001;Q4:HR 2.54,95%CI 2.16-3.00,P<0.001),and cardiac death(Q3:HR 1.81,95%CI 1.39-2.37,P<0.001;Q4:HR 3.47,95%CI 2.71-4.43,P<0.001).Moreover,LAVI significantly improved discrimination and reclassification of the SYNTAX score ***,there was a significant interaction between LAVI quartiles and treatment strategies for *** was associated with lower risk of MACCE than MT alone,regardless of LAVI *** patients in the fourth quartile,PCI was associated with significantly incre

关键词： Three-vessel coronary disease Left atrial volume index Coronary artery bypass grafting Percutaneous coronary intervention Myocardial ischemia Prognosis

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高铌 β-γ TiAl与 Ni 基高温合金加 Ti 箔中间层的脉冲电流扩散连接(英文)

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Transactions of Nonferrous Metals Society of china 2024年

作者：张来启贺昆高强北京科技大学新金属材料国家重点实验室鞍钢集团北京研究院有限公司钒钛研究院分院

采用纯钛箔为中间层，通过脉冲电流扩散连接了高铌β-γTiAl金属间化合物（HNBG）和镍基高温合金（IN718）。对HNBG/Ti/IN718接头的显微组织、元素偏析及力学性能进行了研究，并探讨了钛中间层对显微组织和力学性能的影响。HNBG/Ti/IN71... 详细信息

采用纯钛箔为中间层，通过脉冲电流扩散连接了高铌β-γTiAl金属间化合物（HNBG）和镍基高温合金（IN718）。对HNBG/Ti/IN718接头的显微组织、元素偏析及力学性能进行了研究，并探讨了钛中间层对显微组织和力学性能的影响。HNBG/Ti/IN718接头的典型显微组织为HNBG//β/B2，τ3-NiAl3Ti2//α2-Ti3Al//α-Ti+δ-NiTi2，β-Ti//δ-NiTi2//β2-（Ni，Fe）Ti//Cr/Fe-richη-Ni3Ti，η-Ni3Ti，α-Cr，δ-Ni3Nb//η-Ni3Ti，γ-Ni，δ-Ni3Nb//IN718。随着连接温度升高，间隙和柯肯达尔孔洞逐渐消失。Cr、Fe和 Nb 元素偏析的机制是 β2-NiTi 相阻碍了它们的扩散。纳米压痕结果表明，IN718 合金一侧的扩散区硬度较高。在 850 ℃ × 20 min × 10 MPa 连接参数下，强度达到最大值 326 MPa。断裂发生在Ⅳ区和Ⅴ区，断裂模式为脆性断裂和解理断裂。钛中间层的引入改善了显微组织，增强了结合强度。

关键词：高铌β-γTiAl金属间化合物 IN718合金中间层扩散连接显微组织力学性能元素偏析

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Preparation and properties of nanocrystal SmBO_3 by nitrate-citrate sol-gel combustion method

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Journal of Rare Earths 2009年第2期27卷 231-233页

作者：何伟张晶王丽熙张其土 College of Materials Science and Engineering Nanjing University of TechnologyNanjing 210009China Jiangsu Provincial Key Laboratory of New Materials of Inorganic and Its Composites Nanjing University of TechnologyNanjing 210009China

Nanocrystal SmBO3 powders were synthesized by nitrate-citrate sol-gel combustion method. The phase evolution, morphologies and absorbency of the synthesized powders were characterized by X-ray diffraction （XRD）, Field emission scanning electronic microscope （FESEM）, Fourier transform infrared spectroscopy （FFIR） and UV-3101PC spectrophotometer （UVPC）, respectively. XRD and FESEM results showed that pure SmBO3 phase was obtained at 750 ℃, with an average original particle size of about 100 nm. FTIR showed that there were apparently concentrated absorbent peaks between 500 and 1400 cm^-1. Moreover, the reflectivity of the powders apparently decreased at the wavelength between 1.05 and 1.15 μm. Therefore, SmBO3 might be a kind of absorbent material for infrared laser.

关键词： SmBO3 sol-gel combustion method optical absorption rare earths

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On Fatou sets concerning Yang-Lee theory

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Science china Mathematics 2005年第4期48卷 433-447页

作者： QIAO Jianyong Center of Mathematics China University of Mining and Technology Beijing100083 China

The sets of the points corresponding to the complexphases of the Potts model on the diamond hierarchcal lattice arestudied. These sets are the Fatou sets of a family of rationalmappings. The topological structures of ... 详细信息

关键词： Fatou set, phase transition, iteration, rational mapping.

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