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| 1 | Mechanical Properties and Transformation Behavior of NiTiNb Shape Memory Alloys显示文摘NiTiNb形状记忆合金经适当变形可获得宽相变滞后,已经在管路连接和密封领域获得广泛关注.关于Nb的加入与相变滞后的关系已获得较多研究.实际上,除了相变行为,由于合金化作用,Nb的加入对合金的力学性能的影响也具有重要影响.本研究制备了不同微观结构、相近的马氏体相变开始温度的Ni47Ti44Nb9和Ni49.8Ti45.2Nb5合金,对比研究Nb对NiTiNb形状记忆合金的力学行为和相变特征的影响。结果表明,Nb的存在形态对合金的力学性能有很大影响,特别是合金的屈服强度以及屈服行为。分析讨论预变形下合金的相变滞后及相对机理。 | Liu Wei Zhao Xinqing | 2009 | Chinese Journal of Aeronautics2009，22，5： | 13 |
| 2 | Nitrogen and phosphorus balance analysis of cultivated land in Jiangsu plain,China显示文摘Jiangsu plain is located along the downstream of the Yangtze River, the north part of which is also the coast area of the Yellow Sea. The specific location makes the local environmental issues regionally important. This paper studied arable land area, plantation structure, livestock sector data, which shows that livestock sector contributes a big amount of nitrogen and phosphorus, in terms of the demand from the agriculture use in Jiangsu plain. But actually, there is still much mineral fertiliser used in agriculture, which causes the N and P produced from livestock sector being an important source of pollution to the environment. The paper suggests to tighten up manure management, in order to lead to a big reduction in the pollution to both soil and surface water. | ZOU Xinqing Pierre Gerber LI Haiyu LIU Qingsong WANG Qian SHEN Jingfen SHI Binwen | 2001 | Chinese Science Bulletin2001，46，S1： | 5 |
| 3 | Effect of thermo-mechanical treatment on mechanical and elastic properties of Ti–36Nb–5Zr alloy显示文摘The evolutions of phase constitutions and mechanical properties of a β-phase Ti–36Nb–5Zr(wt%) alloy during thermo-mechanical treatment were investigated. The alloy consisted of dual(β t α″) phase and exhibited a double yielding phenomenon in solution treated state. After cold rolling and subsequent annealing at 698 K for 20 min, an excellent combination of high strength(833 MPa) and low modulus(46 GPa) was obtained. The high strength can be attributed to high density of dislocations, nanosized α phase and grain refinement. On the other hand, the low Young's modulus originates from the suppression of chemical stabilization of β phase during annealing, which guarantees the low β-phase stability. Furthermore, the single-crystal elastic constants of the annealed Ti–36Nb–5Zr alloy were extracted from polycrystalline alloy using an in-situ synchrotron X-ray technique. The results indicated that the low shear modulus C44 contributes to the low Young's modulus for the Ti–36Nb–5Zr alloy, suggesting that reducing C44 through thermo-mechanical treatment might be an efficient approach to realize low Young's modulus in β-phase Ti alloys. The results achieved in this study could be helpful to elucidate the origin of low modulus and sheds light on developing novel biomedical Ti alloys with both low modulus and high strength. | Qingkun Meng Qing Liu Shun Guo Yongqi Zhu Xinqing Zhao | 2015 | Progress in Natural Science:Materials International2015，25，3： | 5 |
| 4 | α′TypeTi-Nb-Zralloyswithultra-lowYoung′smodulusandhighstrength显示文摘a' phase based Ti-Nb-Zr alloys with low Young's modulus and high strength were prepared,and their microstructure and mechanical properties were characterized.It was revealed that the lattice expansion by Nb and Zr addition as well as the presence of a few of a' martensite might be responsible for the low modulus achieved.Ti-15Nb-9Zr alloy,with ultralow modulus of 39 GPa and high strength of850 MPa,could be a potential candidate for biomedical applications. | Qing Liu Qingkun Meng Shun Guo Xinqing Zhao | 2013 | Progress in Natural Science:Materials International2013，23，6： | 4 |
| 5 | Holocene climatic and environmental changes recorded in Baahar Nuur Lake core in the Ordos Plateau, Inner Mongolia of China显示文摘A 5.3 m lake core was drilled in Baahar Nuur Lake in the Ordos Plateau, and measurements of meangrain size, organic δ 13C (δ 13Corg), organic carbon content (TOC), C/N, carbonate content, carbonate δ 13C(δ 13Ccar) and δ 18O (δ 18Ocar) were conducted for retrieving the Holocene chronosequence of climaticchanges based on 15 AMS 14C dates. The record documented four major stages of climate change inthe Ordos Plateau: (IV) a cold and dry condition before ~7.65 14C ka BP; (III) a warm and humid stagebetween ~7.65 and ~5.40 ka BP; (II) a generally drier and cooler climate since ~5.40 ka BP with twohumid events occurring from ~4.70 to ~4.60 ka BP and from ~4.20 to ~3.70 ka BP, and (I) a dry climatecharacterized by complete desiccation of the lake after 3.70 ka BP. Stage III can be further divided intothree sub-stages: (IIIa) a warm and humid episode from ~7.65 to ~6.70 ka BP, (IIIb) a warm and relativelydry episode from ~6.70 to ~6.20 ka BP, and (IIIc) the magthermal and maghumid episode of the Holo-cene from ~6.20 to ~5.40 ka BP. | GUO LanLan FENG ZaoDong LI XinQing LIU LianYou WANG LiXia | 2007 | Chinese Science Bulletin2007，52，7： | 4 |
| 6 | Mineral Potential Mapping for Tungsten Polymetallic Deposits in the Nanling Metallogenic Belt, South China显示文摘The Nanling belt in South China has considerable resources of tungsten polymetallic commodities and is one of the most important metallogenic belts in the world. Data-driven weights-of-evidence(WofE) and fuzzy logic models are used to evaluate the tungsten polymetallic potential of the Nanling belt. Initially, seven ore-controlling factors derived from multi-source geospatial datasets(e.g., geological, geochemical, and geophysical) are used for data integration in the two models. Two mineral potential maps are generated that efficiently predicate the locations of the deposits. The WofE map predicate 81% of the deposits within 13.6% of the study area, whereas the fuzzy logic map predicate 81.5% of the deposits within 13% of the area. The predictive maps are syntheses of spatial association rules, which provide better understanding of those factors that control the distribution of mineralization and trigger eventual exploration work in new areas. Subsequently, in order to evaluate the success rate accuracy, the receiver operating characteristic curves and area under the curves(AUCs) for the two potential maps are constructed. The results show that the AUCs for the WofE and fuzzy logic models are 0.775 7 and 0.840 6, respectively. The higher AUC value for the fuzzy logic model implies that it delineate a greater number of favorable areas compared with the WofE model. Overall, the capabilities of both models for correctly classifying areas with existing mineral deposits are satisfactory. | Yue Liu Qiuming Cheng Qinglin Xia Xinqing Wang | 2014 | Journal of Earth Science2014，25，4： | 3 |
| 7 | ASAF: altered spontaneous activity fingerprinting in Alzheimer’s disease based on multisite fMRI显示文摘Several monocentric studies have noted alterations in spontaneous brain activity in Alzheimer's disease (AD), although there is no consensus on the altered amplitude of low-frequency fluctuations in AD patients. The main aim of the present study was to identify a reliable and reproducible abnormal brain activity pattern in AD. The amplitude of local brain activity (AM), which can provide fast mapping of spontaneous brain activity across the whole brain, was evaluated based on multisite rs-fMRI data for 688 subjects (215 normal controls (NCs), 221 amnestic mild cognitive impairment (aMCI) 252 AD). Two-sample t-tests were used to detect group differences between AD patients and NCs from the same site. Differences in the AM maps were statistically analyzed via the Stouffer's meta-analysis. Consistent regions of lower spontaneous brain activity in the default mode network and increased activity in the bilateral hippocampus/parahippocampus, thalamus, caudate nucleus, orbital part of the middle frontal gyrus and left fusiform were observed in the AD patients compared with those in NCs. Significant correlations (P? | Jiachen Li Dan Jin Ang Li Bing Liu Chengyuan Song Pan Wang Dawei Wang Kaibin Xu Hongwei Yang Hongxiang Yao Bo Zhou Alexandre Bejanin Gael Chetelat Tong Han Jie Lu Qing Wang Chunshui Yu Xinqing Zhang Yuying Zhou Xi Zhang Tianzi Jiang Yong Liu Ying Han | 2019 | Science Bulletin2019，64，14： | 3 |
| 8 | Short-term biochar effect on soil physicochemical and microbiological properties of a degraded alpine grassland显示文摘Soil remediation is an important part of the restoration process of degraded terrestrial ecosystems.Due to its unique properties,biochar is being used widely as an effective soil modifier in agricultural systems,but research is still rare on biochar application in grassland ecosystems,especially in degraded alpine grasslands.In this study,we conducted a plot experiment to investigate the effect of biochar application on soil physicochemical properties and microorganisms at the 0–20 cm soil depth of a degraded alpine grassland in Qinghai-Tibet Plateau,China.The experiment consisted of four corn straw biochar application levels(0%,0.5%,1%and 2%,with the percentage representing the ratio of biochar weight to the dry weight of soil in the surface 20 cm soil layer).When the biochar addition increased from 0%to 2%,total nitrogen,total organic carbon and available phosphorus in the 0–10 cm soil layer increased by 41%,55%and 45%,respectively,in the second year after biochar addition.Meanwhile,soil electrical conductivity decreased,and soil water content increased.Total microbial,fungal and bacterial biomasses in the 0–10 cm soil layer increased from 9.15 to 12.68,0.91 to 1.34,and 3.85 to 4.55μg g^(-1),respectively.The relative biomasses of saprophytic fungi and methanotrophic bacteria decreased,while the relative biomasses of ectomycorrhizal fungi and arbuscular mycorrhizal fungi increased.These results indicate that biochar has a great potential in improving microbial activity and soil fertility in soil remediation of the degraded alpine grassland. | Jinsheng LI Xinqing SHAO Ding HUANG Kesi LIU Jianying SHANG Qian ZHANG Tianci ZHAO Xiaomeng YANG | 2022 | Pedosphere2022，32，3： | 3 |
| 9 | Heterostructured ZnFe_2O_4/Fe_2TiO_5/TiO_2 Composite Nanotube Arrays with an Improved Photocatalysis Degradation Efficiency Under Simulated Sunlight Irradiation显示文摘To improve the visible light absorption and photocatalytic activity of titanium dioxide nanotube arrays(TONTAs), ZnFe_2O_4(ZFO) nanocrystals were perfused into pristine TONTA pipelines using a novel bias voltageassisted perfusion method. ZFO nanocrystals were well anchored on the inner walls of the pristine TONTAs when the ZFO suspensions(0.025 mg m L^(-1)) were kept under a60 V bias voltage for 1 h. After annealing at 750 °C for2 h, the heterostructured ZFO/Fe_2 TiO_5(FTO)/TiO_2 composite nanotube arrays were successfully obtained. Furthermore, Fe^(3+)was reduced to Fe^(2+)when solid solution reactions occurred at the interface of ZFO and the pristine TONTAs. Introducing ZFO significantly enhanced thevisible light absorption of the ZFO/FTO/TONTAs relative to that of the annealed TONTAs. The coexistence of type I and staggered type II band alignment in the ZFO/FTO/TONTAs facilitated the separation of photogenerated electrons and holes, thereby improving the efficiency of the ZFO/FTO/TONTAs for photocatalytic degradation of methylene blue when irradiated with simulated sunlight. | Kun Xiong Kunzhou Wang Lin Chen Xinqing Wang Qingbo Fan Jérémie Courtois Yuliang Liu Xianguo Tuo Minhao Yan | 2018 | Nano-Micro Letters2018，10，1： | 2 |
| 10 | Ontogenetic trace element distribution in brachiopod shells:An indicator of original seawater chemistry显示文摘 | Xinqing Lee Ruizhong Hu Uwe Brand Hui Zhou Xiaoming Liu Honglin Yuan Chongling Yan Hongguang Cheng | 2004 | Chemical Geology2004，209，： | 1 |
| 11 | A β-type TiNbZr alloy with low modulus and high strength for biomedical applications显示文摘The effect of thermo-mechanical treatment on the mechanical properties of a novel β-type Ti–36Nb–5Zr(wt%) alloy has been investigated.The solution treated alloy consists of β and α″ phases and exhibits a two-stage yielding with a low yield stress(around 100 MPa). After cold rolling at a reduction of 87.5% and subsequent annealing treatment at 698 K for 25 min, a fine microstructure with nanosized α precipitates distributed in small β grains as well as high density of dislocations was obtained to achieve a yield strength of 720 MPa and a ultimate tensile strength of 860 MPa. In spite of the formation of α precipitates, the β-stabilizers are not enriched in the parent β matrix due to the short duration and low temperature of the thermal treatment, resulting in a low chemical stability of β phase. The low stability of β phase and the small volume fraction of α precipitates produce a low Young's modulus of 48 GPa. Such an excellent combination of low elastic modulus and high strength in mechanical properties indicates great potential for biomedical applications. | Qingkun Meng Shun Guo Qing Liu Liang Hu Xinqing Zhao | 2014 | Progress in Natural Science:Materials International2014，24，2： | 1 |
| 12 | Effects of live rock on removal of dissolved inorganic nitrogen in coral aquaria显示文摘Maintaining stable water quality is one of the key processes for recirculating coral aquaculture. Traditional aquarium systems which mainly utilized a nitrification of nitrifying bacteria attached to the surface of massive artificial filter material are difficult to maintain the oligotrophic conditions necessary for coral aquaculture. This study investigated the removal effects of dissolved inorganic nitrogen(ammonia and nitrate) by live rock(LR), a key component in the 'Berlin system' coral aquarium. The expression levels of bacterial functional genes, AOA3,amo A and nos Z, were measured on the exterior and interior of LR. The nitrifying and denitrifying bacterial abundance on LR was quantified and the nitrogen nutrient regulatory effects of LR were evaluated. The results demonstrated that LR mainly removed ammonium(NH_4^+) from the water with a mean efficiency of 0.141 mg/(kg·h), while the removal of nitrate(NO_3~–) was not significant. Bacterial diversity analysis showed that ammonia-oxidizing bacteria(AOB) were the most common bacteria on LR, which accounted for 0.5%–1.4% of the total bacterial population, followed by denitrifying bacteria, which accounted for 0.2% of the total population, and the ammonia-oxidizing archaea(AOA) were the least common type(<0.01%). The low abundance of denitrifying bacteria may be responsible for the poor nitrate(NO_3~–) removal of LR. Thus, other biological filtration methods are needed in coral aquaria to control nitrates generated from nitrification or biological metabolism. | LI Yan ZHENG Xinqing YANG Xiaozhou OU Dangyun LIN Rongcheng LIU Xinming | 2017 | Acta Oceanologica Sinica2017，36，12： | 1 |
| 13 | Biomimetic synthesis and characterization of carbon nanofiber/ hydroxyapatite composite scaffolds 显示文摘 | Meiyu Wu Qiaoying Wang Xinqing Liu | 2013 | Carbon2013，，51： | 1 |
| 14 | Nano-hardness, wear resistance and pseudoelasticity of hafnium implanted NiTi shape memory alloy显示文摘 | Tingting Zhao Yan Li Yong Liu Xinqing Zhao | 2012 | Journal of the Mechanical Behavior of Biomedical Materials2012，，： | 1 |
| 15 | Operando reconstruction towards stable CuI nanodots with favorable facets for selective CO_(2) electroreduction to C2H4显示文摘Cu-based electrocatalysts with favorable facets and Cu^(+)can boost CO_(2) reduction to valuable multicarbon products.However,the inevitable Cu^(+)reduction and the phase evolution usually result in poor performance.Herein,we fabricate CuI nanodots with favorable(220)facets and a stable Cu^(+)state,accomplished by operando reconstruction of Cu(OH)_(2) under CO_(2)-and I--containing electrolytes for enhanced CO_(2)-to-C_(2)H_(4) conversion.Synchrotron X-ray absorption spectroscopy(XAS),in-situ Raman spectroscopy and thermodynamic potential analysis reveal the preferred formation of CuI.Vacuum gas electroresponse and density functional theory(DFT)calculations reveal that CO_(2)-related species induce the exposure of the(220)plane of Cu I.Moreover,the small size of nanodots enables the adequate contact with I^(-),which guarantees the rapid formation of Cu I instead of the electroreduction to Cu^(0).As a result,the resulting catalysts exhibit a high C2H4 Faradaic efficiency of 72.4%at a large current density of 800 m A cm^(-2) and robust stability for 12 h in a flow cell.Combined in-situ ATR-SEIRS spectroscopic characterizations and DFT calculations indicate that the(220)facets and stable Cu^(+) in CuI nanodots synergistically facilitate CO_(2)/*CO adsorption and*CO dimerization. | Wenjie Xue Hongxia Liu Xinqing Chen Xiaoju Yang Ruoou Yang Youwen Liu Minghao Li Xuan Yang Bao Yu Xia Bo You | 2023 | Science China Chemistry2023，66，6： | 1 |
| 16 | Brasenia-inspired hydrogel with sustained and sequential release of BMP and WNT activators for improved bone regeneration显示文摘Although bone morphogenetic protein(BMP) and WNT signaling play pivotal roles in bone development,homeostasis, and regeneration, the applications of proteins to stimulate corresponding signaling pathways showed limited outcomes in the repair and regeneration of bone defects that might be attributed to the reciprocal interventions of these pathways. In order to satisfy the combinational and sequential activation of BMP and WNT pathways, inspired by the heterogeneous hydrogel-liked structures of Brasenia, heterogeneous alginate/chitosan hydrogels were fabricated and spatially loaded with FK506 and BIO to achieve sustained and sequential release of the activators. Alkaline phosphatase staining, alizarin red staining and q RT-PCR results suggested that FK506 and BIO enhanced osteoblastic differentiation in vitro when used separately. Besides, by mixing and matching the activators and the hydrogel layers, a superior releasing mode that a combination of early FK506 release and following BIO release was identified via both in vitro and in vivo explorations for most efficient bone regeneration. These results suggested that drug-loaded heterogeneous hydrogels possess great potentials in treating bone loss defects for future clinical practice. | Xinqing Hao Xuewei Zhang Yue Hu Chunxia Ren Cangwei Liu Lu Wang Yijun Zhou Shuangshuang Wang Huanyu Luo Guangxing Yan Xiao Wang Xiaomeng Wang Feilong Ren Ce Shi, Wenlong Song Hongchen Sun | 2023 | Chinese Chemical Letters2023，34，7： | 0 |
| 17 | The use of evidential belief functions for mineral potential mapping in the Nanling belt, South China显示文摘在这研究,证据的信仰功能( EBF )被申请在 Nanling 带印射钨 polymetallic 潜力,华南七证据的层(例如,地质, geochemical ,并且地球物理)与钨 polymetallic 有关,沉积物从一个多来源 geospatial 数据库被提取在证据的层和目标沉积物之间的关系用 EBF 模型四 EBF 地图被确定(信仰地图,不信地图,无常地图,并且似有道理地图)被集成在最后的预兆的地图上为钨 polymetallic 潜力提供有意义的解释的七证据的层产生,学习区域被划分成高潜力,中等潜力,和低潜力的三个目标地区区域,在哪个之中高潜在、中等的潜在的区域说明了17.8%全部的区域,包含81%总数扔评估成功率精确性,为信仰地图在曲线( AUC )下面操作特征(巨鸟)曲线和区域的接收装置被计算在曲线下面的区域是 0.81 它显示为正确地与存在矿藏分类区域的能力是令人满意的这研究的结果显示 EBF 有效地使用印射矿物质潜力并且为管理与证据的层联系的无常。 | Yue LIU Qiuming CHENG Qinglin XIA Xinqing WANG | 2015 | Frontiers of Earth Science2015，9，2： | 0 |
| 18 | Wavelength Estimation Method Based on Radon Transform and Image Texture显示文摘以便在严肃的噪音克服差的精确性的缺点和传统的波长计算方法的非严肃的直觉说,一个修订的氡变换算法被使用建议一而不是使用近似用于波长的波浪质地直线评价。第一,雷达图象的氡变换被分析。然后,与波浪质地结合了获得它的恰当的直线,距离在直线之间被计算得到波长。最后,算法在 PC 上与 Matlab 被规划。试验性的结果证明建议算法能与好可见性改进波长的评价精确性。 | LU Ying ZHUANG Xinqing SUN Zhen WANG Shengzheng LIU Wei | 2017 | Journal of Shipping and Ocean Engineering2017，7，5： | 0 |
| 19 | Electronic energy loss and ion velocity correlation effects in track production in swift-ion-irradiated LiNbO_(3):A quantitative assessment between structural damage morphology and energy deposition显示文摘The primary motivation for studying how irradiation modifies the structures and properties of solid materials involves the understanding of undesirable phenomena,including irradiation-induced degradation of components in nuclear reactors and space exploration,and beneficial applications,including material performance tailoring through ion beam modification and defect engineering.In this work,the formation mechanism of latent tracks with different damage morphologies in LiNbO_(3)crystals under 0.09-6.17 Me V/u ion irradiation with an electronic energy loss from 2.6-13.2 ke V/nm is analyzed by experimental characterizations and numerical calculations.Irradiation-induced damage is preliminarily evaluated via the prism coupling technique to analyze the correlation between the dark-mode spectra and energy loss profiles of irradiated regions.Under the irradiation conditions of different ion velocities and electronic energy losses,different damage morphologies,from individual spherical defects to discontinuous and continuous tracks,are experimentally characterized.During ion penetration process,the ion velocity determines the spatiotemporal distribution of deposited irradiation energy induced by electronic energy loss,meaning that the two essential factors including electronic energy loss and ion velocity coaffect the track damage.The inelastic thermal spike model is used to numerically calculate the spatiotemporal evolutions of energy deposition and the corresponding atomic temperature under different irradiation conditions,and a quantitative relationship is proposed by comparison with corresponding experimentally observed track damage morphologies.The obtained quantitative relationship between irradiation conditions and track damage provides deep insight and guidance for understanding the damage behavior of crystal materials in extreme radiation environments and selecting irradiation parameters,including ion species and energies,for ion beam technique application in atomic-level defect manipulation,material modification,and micro/nanofabrication. | Xinqing Han Qing Huang Miguel L.Crespillo Eva Zarkadoula Yong Liu Xuelin Wang Peng Liu | 2022 | Journal of Materials Science & Technology2022，，21： | 0 |
| 20 | The effect of seafloor topography in the Southern Ocean on tabular iceberg drifting and grounding显示文摘Antarctic tabular icebergs are important active components in the ice sheet-ice shelf-ocean system.Seafloor topography is the key factor that affects the drifting and grounding of icebergs,but it has not been fully investigated.This study analyzes the impact of seafloor topography on the drifting and grounding of Antarctic tabular icebergs using Bedmap-2 datasets and iceberg route tracking data from Brigham Young University.The results highlight the following points.(1) The quantitative distributions of iceberg grounding events and the tracking points of grounded icebergs are mainly affected by iceberg draft and reach their peak values in sea water with depths between 200 m and 300 m.The peak tracking point number and linear velocity of free-drifting icebergs are found in the Antarctic Slope Front(water depth of approximately 500 m).(2) The area of possible grounding regions of small-scale icebergs calved from ice shelf fronts accounts for 28%of the sea area at water depths less than 2000 m outside the Antarctic coastline periphery(3.62 million km2).Their spatial distribution is mainly around East Antarctica and the Antarctic Peninsula.The area of possible grounding regions of large tabular icebergs with long axes larger than 18.5 km(in water depths of less than 800 m) accounts for 74%of the sea area.(3) The iceberg drifting velocity is positively correlated with ocean depth in areas where the depth is less than 2000 m(R=0.85,P<0.01).This result confirms the effect of water depth variations induced by seafloor topography fluctuations on iceberg drifting velocity. | LI Tian LIU Yan CHENG Xiao OUYANG LunXi LI XinQing LIU JiPing Mohammed SHOKR HUI FengMing ZHANG Jing WEN JiaHong | 2017 | Science China Earth Sciences2017，60，4： | 0 |
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