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104篇 您的检索式:作者名="Yunlong ZHAO"
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1The Reference Genome of Tea Plant and Resequencing of 81 Diverse Accessions Provide Insights into Its Genome Evolution and Adaptation显示文摘Tea plant is an important economic crop,which is used to produce the world's oldest and most widely consumed tea beverages.Here,we present a high-quality reference genome assembly of the tea plant(Camellia sinensis var.sinensis)consisting of 15 pseudo-chromosomes.LTR retrotransposons(LTR-RTs)account for 70.38%of the genome,and we present evidence that LTR-RTS play critical roles in genome size expansion and the transcriptional diversification of tea plant genes through preferential insertion in promoter regions and introns.Genes,particularly those coding for terpene biosynthesis pro-teins,associated with tea aroma and stress resistance were significantly amplified through recent tandem duplications and exist as gene clusters in tea plant genome.Phylogenetic analysis of the sequences of 81 tea plant accessions with diverse origins revealed three well-differentiated tea plant populations,support-ing the proposition for the southwest origin of the Chinese cultivated tea plant and its later spread to western Asia through introduction.Domestication and modern breeding left significant signatures on hundreds of genes in the tea plant genome,particularly those associated with tea quality and stress resis-tance.The genomic sequences of the reported reference and resequenced tea plant accessions provide valuable resources for future functional genomics study and molecular breeding of improved cul-tivars of tea plants.Enhua Xia Wei Tong Yan Hou Yanlin An Linbo Chen Qiong Wu Yunlong Liu Jie Yu Fangdong Li Ruopei Li Penghui Li Huijuan Zhao Ruoheng Ge Jin Huang Ali Inayat Mallano Yanrui Zhang Shengrui Liu Weiwei Deng Chuankui Song Zhaoliang Zhang Jian Zhao Shu Wei Zhengzhu Zhang Tao Xia Chaoling Wei Xiaochun Wan 2020Molecular Plant2020,13,7:51
2A Novel Hierarchical Porous 3D Structured Vanadium Nitride/Carbon Membranes for High-performance Supercapacitor Negative Electrodes显示文摘Transition-metal nitrides exhibit wide potential windows and good electrochemical performance, but usually experience imbalanced practical applications in the energy storage field due to aggregation, poor circulation stability, and complicated syntheses. In this study, a novel and simple multiphase polymeric strategy was developed to fabricate hybrid vanadium nitride/carbon(VN/C) membranes for supercapacitor negative electrodes, in which VN nanoparticles were uniformly distributed in the hierarchical porous carbon 3D networks. The supercapacitor negative electrode based on VN/C membranes exhibited a high specific capacitance of 392.0 F g^(-1) at 0.5 A g^(-1) and an excellent rate capability with capacitance retention of 50.5% at 30 A g^(-1). For the asymmetric device fabricated using Ni(OH)_2//VN/C membranes, a high energy density of 43.0 Wh kg^(-1) at a power density of800 W kg^(-1) was observed. Moreover, the device also showed good cycling stability of 82.9% at a current density of 1.0 A g^(-1) after 8000 cycles. This work may throw a light on simply the fabrication of other high-performance transition-metal nitridebased supercapacitor or other energy storage devices.Yage Wu Yunlong Yang Xiaoning Zhao Yongtao Tan Ying Liu Zhen Wang Fen Ran 2018Nano-Micro Letters2018,10,4:13
3Sisyphus effects in hydrogen electrochemistry on metal silicides enabled by silicene subunit edge显示文摘Nonmetal elements strictly govern the electrochemical performance of molybdenum compounds.Yet,the exact role played by nonmetals during electrocatalysis remains largely obscure.With intermetallic MoSi_2comprising silicene subunits,we present an unprecedented hydrogen evolution reaction(HER)behavior in aqueous alkaline solution.Under continuous operation,the HER activity of MoSi_2shows a more than one order of magnitude improvement in current density from 1.1 to 21.5 mA cm^(à2)at 0.4 V overpotential.Meanwhile,this activation behavior is highly reversible,such that voltage withdrawal leads to catalyst inactivation but another operation causes reactivation.Thus,the system shows dynamics strikingly analogous to the legendary Sisyphus’labor,which drops and recovers in a stepwise manner repeatedly,but never succeeds in reaching the top of the mountain.Isomorphic WSi_2behaves almost the same as MoSi_2,whereas other metal silicides with silicyne subunits,including CrSi_2and TaSi_2,do not exhibit any anomalous behavior.A thin amorphous shell of MoSi_2is observed after reaction,within which the Si remains partially oxidized while the oxidation state of Mo is basically unchanged.First-principles calculations further reveal that the adsorption of hydroxide ions on silicene subunit edges and the subsequent Si vacancy formation in MoSi_2jointly lead to the anomalous HER kinetics of the adjacent Mo active centers.This work demonstrates that the role of nonmetal varies dramatically with the electronic and crystallographic structures of silicides and that silicene structural subunit may serve as a promoter for boosting HER in alkaline media.Zechao Zhuang Yong Li Jiazhao Huang Zilan Li Kangning Zhao Yunlong Zhao Lin Xu Liang Zhou Lyudmila V. Moskaleva Liqiang Mai 2019Science Bulletin2019,64,9:12
4Humoral immunogenicity and reactogenicity of CoronaVac or ZF2001 booster after two doses of inactivated vaccine显示文摘Dear Editor,COVID-19 vaccination campaigns are being conducted in countries worldwide,and 47.4% of the world population has received at least one dose of a COVID-19 vaccine.1 Although vaccination has shaped COVID-19 epidemic curves,waning antibody levels and relatively short-duration protection provided by current COVID-19 vaccines have been observed,especially against SARS-CoV-2 variants of concern(VOCs)and among older individuals.Yunlong Cao Xiaohua Hao Xi Wang Qianhui Wu Rui Song Dong Zhao Weiliang Song Yao Wang Ayijiang Yisimayi Wei Wang Juan Du Hongjie Yu Xiaoliang Sunney Xie Ronghua Jin 2022Cell Research2022,32,1:8
5High-Resolution Genome-wide Association Study Identifies Genomic Regions and Candidate Genes for Important Agronomic Traits in Wheat显示文摘Wheat(Triticum aestivum)is a major staple food crop worldwide.Genetic dissection of important agronomic traits is essential for continuous improvement of wheat yield to meet the demand of the world's growing population.We conducted a large-scale genome-wide association study(GWAS)using a panel of 768 wheat cultivars that were genotyped with 327609 single-nucleotide polymorphisms generated by genotyping-by-sequencing and detected 395 quantitative trait loci(QTLs)for 12 traits under 7 environments.Among them,273 QTLs were delimited to≤1.0-Mb intervals and 7 of them are either known genes(Rht-D,Vrn-B1,and Vrn-D1)that have been cloned or known QTLs(TaGA2ox8,APO1,TaSus1-7B,and Rht12)that were previously mapped.Eight putative candidate genes were identified for three QTLs that enhance spike seed setting and grain size using gene expression data and were validated in three bi-parental populations.Protein sequence analysis identified 33 putative wheat orthologs that have high identity with rice genes in QTLs affecting similar traits.Large r^2 values for additive effects observed among the QTLs for most traits indicated that the phenotypes of these identified QTLs were highly predictable.Results from this study demonstrated that significantly increasing GWAS population size and marker density greatly improves detection and identification of candidate genes underlying a QTL,solidifying the foundation for large-scale QTL fine mapping,candidate gene validation,and developing functional markers for genomics-based breeding in wheat.Yunlong Pang Chunxia Liu Danfeng Wang Paul St.Amand Amy Bernardo Wenhui Li Fang He Linzhi Li Liming Wang Xiufang Yuan Lei Dong Yu Su Huirui Zhang Meng Zhao Yunlong Liangi Hongze Jia Xitong Shen Yue Lu Hongming Jiang Yuye Wu Anfei Li Honggang Wang Lingrang Kong Guihua Bai Shubing Liu 2020Molecular Plant2020,13,9:8
6FOXO3a Inhibits TNF-α-and IL-1β-Induced Astrocyte Proliferation:Implication for Reactive Astrogliosis显示文摘反应性星形胶质细胞增生是神经退行性疾病的特征性病理性改变之一。炎性细胞因子,如TNF-α和IL-1β,已被证实在神经退行性疾病中介导反应性星形胶质细胞增生,尽管其分子机制仍不清楚。本研究探讨严重反应性星形胶质细胞增生的一个主要方面——转录因子FOXO3a在星形胶质细胞增生中的作用。本研究通过Ki67和BrdU免疫染色证实TNF-α和IL-1β促进星形胶质细胞增生。本研究进一步发现细胞因子介导的星形胶质细胞增生伴有FOXO3a磷酸化的增加和核表达的下降。颅内注射TNF-α和IL-1β导致星形胶质细胞增生和肥大,这与星形胶质细胞中的Foxo3a核表达下降有关。为了确定Foxo3a在星形胶质细胞增生中的作用,在腺病毒中过表达野生型Foxo3a,引起p27Kip1及Gadd45α上调,且显著抑制细胞因子介导的星形胶质细胞增生。与之相反,负显性型FOXO3a的过表达使p27Kip1降低,下调Cyclin D1,促进星形胶质细胞增生。同样,Foxo3a敲除小鼠中分离的星形胶质细胞表现出更高的增生趋势。颅内注射细胞因子后,Foxo3a敲除小鼠在体内表现出严重的星形胶质细胞增生。综上所述,FOXO3a在促炎因子刺激时对于遏制星形胶质细胞增生发挥重要作用,FOXO3a功能的缺失可能是严重反应性星形胶质细胞增生中星形胶质细胞增生的原因。了解FOXO3a在反应性星形胶质细胞增生中的关键调节作用可能为神经炎症提供一个新的治疗靶点。MIN CUI YUNLONG HUANG CHANGHAI TIAN YONG ZHAO AND JIALIN ZHENG 2011神经损伤与功能重建2011,6,3:8
7Neural Network-Based Adaptive Motion Control for a Mobile Robot with Unknown Longitudinal Slipping显示文摘When the mobile robot performs certain motion tasks in complex environment, wheel slipping inevitably occurs due to the wet or icy road and other reasons, thus directly influences the motion control accuracy. To address unknown wheel longitudinal slipping problem for mobile robot, a RBF neural network approach based on whole model approximation is presented. The real-time data acquisition of inertial measure unit(IMU), encoders and other sensors is employed to get the mobile robot’s position and orientation in the movement, which is applied to compensate the unknown bounds of the longitudinal slipping using the adaptive technique. Both the simulation and experimental results prove that the control scheme possesses good practical performance and realize the motion control with unknown longitudinal slipping.Gang Wang Xiaoping Liu Yunlong Zhao Song Han 2019Chinese Journal of Mechanical Engineering2019,32,4:8
8Seasonal bioconcentration of heavy metals in Onchidium struma(Gastropoda:Pulmonata)from Chongming Island,the Yangtze Estuary,China显示文摘The seasonal concentration changes of selected heavy metal Cd,Cr,Cu,Fe,Mn,Pb,and Zn in five tissues of marine gastropod Onchidium struma were studied in the Chongming Island,the Yangtze Estuary in April 2007,July 2006,September 2006,and November 2006,respectively.The results demonstrated that the bioconcentration factor of Cu(biomass/water) in all selected tissues was about 104 magnitudes,Fe and Cd were 103,Zn was 102,and Mn,Pb,and Cr were 101.Hepatopancreas was proven to be the dominant storage tissue of Cr,Cu,Mn,and Zn,whereas Fe and Pb were mainly stored in muscle and digenetic gland,and Cd was stored in vitelline gland and albumen gland.Additionally,it was found that Cu,Fe,Mn,and Zn were concentrated significantly by O.struma(whole-body) in summer or autumn,and Cd,Cr,and Pb increased slightly in spring and winter.Furthermore,the bioconcentration of Cr was nearly 2-fold higher and Zn was 1.6-fold higher in the water compared with the Water Quality Standard for Fisheries.With view of excessive amount of Pb,Cd,and Cu according to seafood standard,the consumption of O.struma might have the risk of health hazard.LI Xiaobo JIA Linzhi ZHAO Yunlong WANG Qun CHENG Yongxu 2009Journal of Environmental Sciences2009,21,2:7
9Solvent-Free Synthesis of Ultrafine Tungsten Carbide Nanoparticles-Decorated Carbon Nanosheets for Microwave Absorption显示文摘Carbides/carbon composites are emerging as a new kind of binary dielectric systems with good microwave absorption performance.Herein,we obtain a series of tungsten carbide/carbon composites through a simple solvent-free strategy,where the solid mixture of dicyandiamide(DCA)and ammonium metatungstate(AM)is employed as the precursor.Ultrafine cubic WC1-x nanoparticles(3-4 nm)are in situ generated and uniformly dispersed on carbon nanosheets.This configuration overcomes some disadvantages of conventional carbides/carbon composites and is greatly helpful for electromagnetic dissipation.It is found that the weight ratio of DCA to AM can regulate chemical composition of these composites,while less impact on the average size of WC1-x nanoparticles.With the increase in carbon nanosheets,the relative complex permittivity and dielectric loss ability are constantly enhanced through conductive loss and polarization relaxation.The different dielectric properties endow these composites with distinguishable attenuation ability and impedance matching.When DCA/AM weight ratio is 6.0,the optimized composite can produce good microwave absorption performance,whose strongest reflection loss intensity reaches up to-55.6 dB at 17.5 GHz and qualified absorption bandwidth covers 3.6-18.0 GHz by manipulating the thickness from 1.0 to 5.0 mm.Such a performance is superior to many conventional carbides/carbon composites.Yunlong Lian Binhua Han Dawei Liu Yahui Wang Honghong Zhao Ping Xu Xijiang Han Yunchen Du 2020Nano-Micro Letters2020,12,11:7
10Progress in electrolytes for beyond-lithium-ion batteries显示文摘The constant increase in global energy demand and stricter environmental standards are calling for advanced energy storage technologies that can store electricity from intermittent renewable sources such as wind,solar,and tidal power,to allow the broader implementation of the renewables.The gridoriented sodium-ion batteries,potassium ion batteries and multivalent ion batteries are cheaper and more sustainable alternatives to Li-ion,although they are still in the early stages of development.Additional optimisation of these battery systems is required,to improve the energy and power density,and to solve the safety issues caused by dendrites growth in anodes.Electrolyte,one of the most critical components in these batteries,could significantly influence the electrochemical performances and operations of batteries.In this review,the definitions and influences of three critical components(salts,solvents,and additives)in electrolytes are discussed.The significant advantages,challenges,recent progress and future optimisation directions of various electrolytes for monovalent and multivalent ions batteries(i.e.organic,ionic liquid and aqueous liquid electrolytes,polymer and inorganic solid electrolytes)are summarised to guide the practical application for grid-oriented batteries.Juyan Zhang Xuhui Yao Ravi KMisra Qiong Cai Yunlong Zhao 2020Journal of Materials Science & Technology2020,44,9:7
11Glucose-regulated protein 75 suppresses apoptosis induced by glucose deprivation in PC12 cells through inhibition of Bax conformational change显示文摘调整葡萄糖的蛋白质(Grp75 ) 75 是属于热吃惊蛋白质的重要分子的女伴 70 家庭并且在线粒体主要住。Grp75 能保护房间免受葡萄糖剥夺(GD ) 的伤害损害。然而,它由执行这功能的分子的机制是未知的。这里,我们报导 Grp75 能推迟细胞色素 c 的版本,还原剂 apoptosis 由 GD 导致,并且我们也发现 Grp75 能减少 Bax/Bcl-2 基因表示比率并且在这个过程期间禁止 Bax 的 conformational 变化。在结论,这些调查结果建议 Grp75 overexpression 能禁止 GD 导致的 apoptosis。Grp75 禁止了 Bax conformational 变化推迟细胞色素 c 的版本,因此提供保护给对 GD 毒性首先被用作一个神经原模型的 PC12 房间。Ling Yang Xiaoyu Liu Jinyu Hao Yunlong Yang Mingxia Zhao Ji Zuo Wen Liu 2008Acta Biochimica et Biophysica Sinica2008,40,4:6
12Variations in China's terrestrial water storage over the past decade using GRACE data显示文摘Variations in China's terrestrial water storage from March 2003 to February 2013 were determined using data from the Gravity Recovery and Climate Experiment(GRACE)monthly gravity field model provided by the Center for Space Research. The results were compared with the variations in surface water estimated using the Global Land Data Assimilation System(GLDAS) hydrological model. The results indicated a decline in terrestrial water storage in the Shanxi and Xinjiang Tianshan regions over the past decade with a downward trend that reached 7.76 ± 0.71 mm/a and 5.8 ± 0.67 mm/a, respectively. Anthropogenic activities were considered to be the major cause of this terrestrial water loss(especially groundwater) in these regions. In contrast, the intersection of the Xinjiang and Tibet Autonomous Regions and the Qinghai Province showed an upward trend in the terrestrial water storage at a rate of 9.06 ± 0.37 mm/a, which is closely related to the high-quality local ecological environment and lack of human activities. At the intersections between the Chongqing, Guizhou, and Hunan Provinces and between the Jiangxi, Zhejiang, and Fujian Provinces, the terrestrial water storage increased at rates of7.86 ± 0.9 and 8.68 ± 0.8 mm/a, respectively. These two regions received abundant annual precipitation; moreover, there was no considerable variation in the amount of groundwater storage over the past decade. In addition, the empirical orthogonal function(EOF) method used in this study could eliminate correlated errors in the GRACE monthly gravity field model more effectively than the traditional polynomial fitting method, and it did not generate false signals.Zhao Qian Wu Weiwei Wu Yunlong 2015Geodesy and Geodynamics2015,6,3:5
13Novel Hybrid Nanoparticles of Vanadium Nitride/Porous Carbon as an Anode Material for Symmetrical Supercapacitor显示文摘Hybrid materials of vanadium nitride and porous carbon nanoparticles(VN/PCNPs) were fabricated by a facile pyrolysis process of vanadium pentoxide(V_2O_5) xerogel and melamine at relatively low temperature of 800 °C for supercapacitor application. The effects of the feed ratio of V_2O_5 to melamine(r), and nitrogen flow rate on the microstructure and electrochemical performance were also investigated. It was found that the size of the as-synthesized nanoparticles is about 20 nm. Both r value and N_2 flow rate have enormous impacts on morphology and microstructure of the nanoparticle, which correspondingly determined the electrochemical performance of the material. The VN/C hybrid nanoparticles exhibited high capacitive properties, and a maximum specific capacitance of 255.0 Fg^(-1) was achieved at a current density of 1.0 Ag^(-1) in 2 M KOH aqueous electrolyte and the potential range from 0 to -1.15 V. In addition,symmetrical supercapacitor fabricated with the as-synthesized VN/PCNPs presents a high specific capacitance of 43.5 F g^(-1) at 0.5 A g^(-1) based on the entire cell, and an energy density of 8.0 Wh kg^(-1) when the power density was 575 W kg^(-1). Even when the power density increased to 2831.5 W kg^(-1), the energy density still remained 6.1 Wh kg^(-1).Yunlong Yang Kuiwen Shen Ying Liu Yongtao Tan Xiaoning Zhao Jiayu Wu Xiaoqin Niu Fen Ran 2017Nano-Micro Letters2017,9,1:5
14High‑Energy and High‑Power Pseudocapacitor–Battery Hybrid Sodium‑Ion Capacitor with Na^(+) Intercalation Pseudocapacitance Anode显示文摘High-performance and low-cost sodium-ion capacitors(SICs)show tremendous potential applications in public transport and grid energy storage.However,conventional SICs are limited by the low specific capacity,poor rate capability,and low initial coulombic efficiency(ICE)of anode materials.Herein,we report layered iron vanadate(Fe5V15O39(OH)9·9H2O)ultrathin nanosheets with a thickness of~2.2 nm(FeVO UNSs)as a novel anode for rapid and reversible sodium-ion storage.According to in situ synchrotron X-ray diffractions and electrochemical analysis,the storage mechanism of FeVO UNSs anode is Na+intercalation pseudocapacitance under a safe potential window.The FeVO UNSs anode delivers high ICE(93.86%),high reversible capacity(292 mAh g^−1),excellent cycling stability,and remarkable rate capability.Furthermore,a pseudocapacitor–battery hybrid SIC(PBH-SIC)consisting of pseudocapacitor-type FeVO UNSs anode and battery-type Na3(VO)2(PO4)2F cathode is assembled with the elimination of presodiation treatments.The PBH-SIC involves faradaic reaction on both cathode and anode materials,delivering a high energy density of 126 Wh kg^−1 at 91 W kg^−1,a high power density of 7.6 kW kg^−1 with an energy density of 43 Wh kg−1,and 9000 stable cycles.The tunable vanadate materials with high-performance Na+intercalation pseudocapacitance provide a direction for developing next-generation highenergy capacitors.Qiulong Wei Qidong Li Yalong Jiang Yunlong Zhao Shuangshuang Tan Jun Dong Liqiang Mai Dong‑Liang Peng 2021Nano-Micro Letters2021,13,3:4
15Discrete element modelling of railway ballast performance considering particle shape and rolling resistance显示文摘To simulate ballast performance accurately and efficiently,the input in discrete element models should be carefully selected,including the contact model and applied particle shape.To study the effects of the contact model and applied particle shape on the ballast performance(shear strength and deformation),the direct shear test(DST)model and the large-scale process simulation test(LPST)model were developed on the basis of two types of contact models,namely the rolling resistance linear(RRL)model and the linear contact(LC)model.Particle shapes are differentiated by clumps.A clump is a sphere assembly for one ballast particle.The results show that compared with the typical LC model,the RRL method is more efficient and realistic to predict shear strength results of ballast assemblies in DSTs.In addition,the RRL contact model can also provide accurate vertical and lateral ballast deformation under the cyclic loading in LPSTs.Yunlong Guo Chunfa Zhao Valeri Markine Can Shi Guoqing Jing Wanming Zhai 2020Railway Engineering Science2020,28,4:4
16Recent progress on flexible nanogenerators toward self-powered systems显示文摘The advances in wearable/flexible electronics have triggered tremendous demands for flexible power sources,where flexible nanogenerators,capable of converting mechanical energy into electricity,demonstrate its great potential.Here,recent progress on flexible nanogenerators for mechanical energy harvesting toward self-powered systems,including flexible piezoelectric and triboelectric nanogenerator,is reviewed.The emphasis is mainly on the basic working principle,the newly developed materials and structural design as well as associated typical applications for energy harvesting,sensing,and selfpowered systems.In addition,the progress of flexible hybrid nanogenerator in terms of its applications is also highlighted.Finally,the challenges and future perspectives toward flexible self-powered systems are reviewed.Yiming Liu Lingyun Wang Ling Zhao Xinge Yu Yunlong Zi 2020InfoMat2020,2,2:4
17Thymosin Alpha-1 Inhibits Complete Freund’s Adjuvant-Induced Pain and Production of Microglia-Mediated Pro-inflammatory Cytokines in Spinal Cord显示文摘Activation of inflammatory responses regulates the transmission of pain pathways through an integrated network in the peripheral and central nervous systems.The immunopotentiator thymosin alpha-1(Tal)has recently been reported to have anti-inflammatory and neuroprotective functions in rodents.However,how Tα1 affects inflammatory pain remains unclear.In the present study,intraperitoneal injection of Tal attenuated complete Freund's adjuvant(CFA)-induced pain hypersensitivity,and decreased the up-regulation of pro-inflammatory cytokines(TNF-α,IL-1β,and IL-6)in inflamed skin and the spinal cord.We found that CFA-induced peripheral inflammation evoked strong microglial activation,but the effect was reversed by Tα1.Notably,Tα1 reversed the CFA-induced up-regulation of vesicular glutamate transporter(VGLUT)and down-regulated the vesicular γ-aminobutyric acid transporter(VGAT)in the spinal cord.Taken together,these results suggest that Tα1 plays a therapeutic role in inflammatory pain and in the modulation of microgliainduced pro-inflammatory cytokine production in addition to mediation of VGLUT and VGAT expression in the spinal cord.Yunlong Xu Yanjun Jiang Lin Wang Jiahua Huang Junmao Wen Hang Lv Xiaoli Wu Chaofan Wan Chuanxin Yu Wenjie Zhang Jiaying Zhao Yinqi Zhou Yongjun Chen 2019Neuroscience Bulletin2019,35,4:4
18Low-strain TiP_(2)O_(7) withthree-dimensionalionchannelsas long-life and high-rate anode material for Mg-ion batteries显示文摘Rechargeable magnesium batteries are identified as a promising next-generation energy storage system,but their development is hindered by the anode−electrolyte−cathode incompatibilities and passivation of magnesium metal anode.To avoid or alleviate these problems,the exploitation of alternative anode materials is a promising choice.Herein,we present titanium pyrophosphate(TiP_(2)O_(7))as anode materials for magnesium-ion batteries(MIBs)and investigate the effect of the crystal phase on its magnesium storage performance.Compared with the me-tastable layered TiP_(2)O_(7),the thermodynamically stable cubic TiP_(2)O_(7) displays a better rate capability of 72 mAh g^(−1) at 5000 mA g^(−1).Moreover,cubic TiP_(2)O_(7) exhibits excellent cycling stability with the capacity of 60 mAh g^(−1) after 5000 cycles at 1000 mA g^(−1),which are better than pre-viously reported Ti-based anode materials for MIBs.In situ X-ray diffraction technology confirms the single-phase magnesiumion inter-calation/deintercalation reaction mechanism of cubic TiP_(2)O_(7) with a low volume change of 3.2%.In addition,the density functional theory calcu-lation results demonstrate that three-dimensional magnesiumion diffu-sion can be allowed in cubic TiP_(2)O_(7) with a low migration energy barrier of 0.62 eV.Our work demonstrates the promise of TiP_(2)O_(7) as high-rate and long-life anode materials for MIBs and may pave the way for further development of MIBs.Fangyu Xiong Yalong Jiang Li Cheng Ruohan Yu Shuangshuang Tan Chen Tang Chunli Zuo Qinyou An Yunlong Zhao Jean-Jacques Gaumet Liqiang Mai 2022Interdisciplinary Materials2022,1,1:3
19Flow cytometry investigation of picoplankton across latitudes and along the circum Antarctic Ocean显示文摘Using a flow cytometer (FCM) onboard the R/V Xuelong during the 24th Chinese Antarctic cruise, picoplankton community structure and biomass in the surface water were examined along the latitude and around the Antarctic Ocean. Salinity and temperature were automatically recorded and total Chl a was determined. Along the cruise, the abundance of Synechococcus, Prochlorococcus, pico-eukaryotes and heterotrophic bacteria ranged in 0.001-1.855 × 10 8 ind./L, 0.000-2.778 × 10 8 ind./L, 0.002-1.060 × 10 8 ind./L and 0.132-27.073 × 10 8 ind./L, respectively. Major oceanic distribution of Synechococcus and Prochlorococcus appeared between latitudes 30 N and 30 S. Prochlorococcus was mainly influenced by water temperature, water mass combination and freshwater inflow. Meanwhile, Synechococcus distribution was significantly associated with landing freshwater inflow. Pico-eukaryotes and heterotrophic bacteria were distributed all over the oceans, but with a relatively low abundance in the high latitudes of the Antarctic Ocean. Principal Component Analysis showed that at same latitude of Atlantic Ocean and Indian Ocean, picoplankton distribution and constitution were totally different, geographical location and different water masses combination would be main reasons.LIN Ling HE Jianfeng ZHAO Yunlong ZHANG Fang CAI Minghong 2012Acta Oceanologica Sinica2012,31,1:3
20Geothermal investigation of the thickness of gas hydrate stability zone in the north continental margin of the South China Sea显示文摘The exploration of unconventional and/or new energy resources has become the focus of energy research worldwide,given the shortage of fossil fuels.As a potential energy resource,gas hydrate exists only in the environment of high pressure and low temperature,mainly distributing in the sediments of the seafloor in the continental margins and the permafrost zones in land.The accurate determination of the thickness of gas hydrate stability zone is essential yet challenging in the assessment of the exploitation potential.The majority of previous studies obtain this thickness by detecting the bottom simulating reflectors(BSRs) layer on the seismic profiles.The phase equilibrium between gas hydrate stable state with its temperature and pressure provides an opportunity to derive the thickness with the geothermal method.Based on the latest geothermal dataset,we calculated the thickness of the gas hydrate stability zone(GHSZ) in the north continental margin of the South China Sea.Our results indicate that the thicknesses of gas hydrate stability zone vary greatly in different areas of the northern margin of the South China Sea.The thickness mainly concentrates on 200–300 m and distributes in the southwestern and eastern areas with belt-like shape.We further confirmed a certain relationship between the GHSZ thickness and factors such as heat flow and water depth.The thickness of gas hydrate stability zone is found to be large where the heat flow is relatively low.The GHSZ thickness increases with the increase of the water depth,but it tends to stay steady when the water depth deeper than 3 000 m.The findings would improve the assessment of gas hydrate resource potential in the South China Sea.WANG Yanmin LIU Shaowen HAO Feifei ZHAO Yunlong HAO Chunyan 2017Acta Oceanologica Sinica2017,36,4:3
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