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| 1 | Relative humidity reconstruction for northwestern China's Altay Mountains using tree-ring δ^(18)O显示文摘Relative humidity is an important factor in water and water vapor feedback cycles.In this study,we established a 222-year annual tree-ring δ^(18)O chronology for Siberian larch(Larix sibirica Ldb.)from the Altay Mountains in northwestern China.Climate response analyses revealed that the relative humidity was the primary factor limiting tree-ring δ^(18)O fractionation.Based on our analysis,tree-ring δ^(18)O can be used to reconstruct the July–August relative humidity based on both a reasonable mechanism of tree-ring δ^(18)O fractionation and a statistically significant regression model.We used this model to reconstruct variations in the July–August relative humidity,and the model explained 47.4% of the total variation in the measured relative humidity data from 1961 to 2011.The relative humidity in the study area increased from 1900 to the 1990s and decreased thereafter.Two regime-shift dry periods were detected during the study period(one from 1817 to 1830 and the other from 2004 to 2011). | Guobao Xu Xiaohong Liu Dahe Qin Tuo Chen Wenzhi Wang Guoju Wu Weizhen Sun Wenling An Xiaomin Zeng | 2014 | Chinese Science Bulletin2014，59，2： | 14 |
| 2 | Moisture variations over the past millennium characterized by Qaidam Basin tree-ring δ^(18)O显示文摘High-resolution tree-ring δ18O chronologies covering the last millennium,although scarce,are essential in understanding patterns of climatic changes in the northeastern region of the Qinghai-Tibetan Plateau.For this study,a tree-ring δ18O chronology with a temporal resolution of 3-years was developed from the long-lived Qilian juniper(Sabina przewalskii Kom.),extending back in time to AD 991.This long δ18O chronology was significantly correlated with the yearly δ18O in tree rings during the common period from 1800 to 2006,and was an effective proxy for relative humidity during the growing season.A low-frequency moisture pattern signified the occurrence of a slight drought during the Medieval Climate Anomaly,a marked occurrence of a wet period during the Little Ice Age,and a trend in increasing moisture levels,although lower than average,alongside the Twentieth Century warming trend.Comparisons to other hydroclimatic reconstructions indicate that this tree-ring18O chronology serves as a reliable paleo-humidity proxy for the Qaidam Basin as well as documenting details of past humidity levels in the region. | WANG WenZhi LIU XiaoHong XU GuoBao SHAO XueMei QIN DaHe SUN WeiZhen AN WenLing ZENG XiaoMin | 2013 | Chinese Science Bulletin2013，58，32： | 14 |
| 3 | Study on the spatial differences and its time lag effect on climatic factors of the vegetation in the Longitudinal Range-Gorge Region显示文摘这篇文章包括温度和降水分析 NDVI 和二个气象学的数据的关联,并且探查回答植被的敏感到温度和降水变化的空间模式。由构造 NDVIr 索引,在在纵的范围峡区域(LRGR ) 的植被盖子和陆地使用之间的关系被揭示。结论如下:(1 ) 时间落后那植被回答到温度和降水变化的效果被证明。不同区域有相应于最大的关联系数的不同延期时间。根据降水和温度联合的反应时间,也就是,三种温度降水形式被定义在一样的时间的降水和温度,在温度以前的降水和在降水以前的温度。(2 ) 敏感的空间分发,哪个对温度的植被回答,被几个高、低的散布关联中心描绘。与温度,二个感觉迟钝的区域和二条敏感的带不同被形成介绍植被的反应给降水。(3 ) NDVIr 被构造,它能完美地在 LRGR 反映在气象学的因素和陆地使用状况之间的相应关系。 | BAO YaJing SONG GuoBao LI ZhengHai GAO JiXi LU HaiYan WANG HaiMei CHENG Yan XU Tian | 2007 | Chinese Science Bulletin2007，52，A02： | 12 |
| 4 | Chemiluminescence and electrochemiluminescence applications of metal nanoclusters显示文摘Due to strong photoluminescence,extraordinary photostability,excellent biocompatibility,and good water-solubility,metal nanoclusters have attracted enormous attention since discovered.They are found to be novel fluorescence labels for biological applications and environmental monitoring.Recently the chemiluminescence(CL) or electrochemiluminescence(ECL) of metal nanoclusters has received increasing attention.This review covers recent vibrant developments in this field of the past 5 years,and highlights different functions of metal nanoclusters in various CL and ECL systems,such as luminophores,catalysts,and quenchers.Latest synthetic methods of metal nanoclusters used in CL or ECL are also summarized.Furthermore,we discuss some perspectives and critical challenges of this field in the near future. | Shuang Han Zhichao Zhang Suping Li Liming Qi Guobao Xu | 2016 | Science China Chemistry2016，59，7： | 5 |
| 5 | Spatial distribution regularity and influence factors of population density in the LRGR显示文摘联合 GIS 措施和统计方法,这份报纸选择地文学的因素和气候的因素在 LRGR 在人口密度上学习影响力量和它所有因素的功能的形式。另外,这份报纸与影响人口密度分发的因素在 LRGR 模仿人口密度分发的地位。调查结果显示下列情形:(1 ) 所有自然因素在 LRGR,而是影响程度和形式在人口密度的空间模式上有影响是相当不同的。地文学的因素和交通网络密度在人口密度上有大影响,当象温度和降水的如此的因素几乎没在人口分发上有小影响时。在人口密度和交通网络密度之间的关系假定否定、积极的线性关联趋势,当水系统密度和斜坡的影响看起来独立是指数的函数和对数函数时。(2 ) 人口在整个 LRGR 被散布并且当因为自然条件的影响的不可分的散布和本地集中,呈现如此的特征。因此,一条高人口密度带在 LRGR 的中间被形成了,并且一个高人口密度补丁在 LRGR 的南方形成。(3 ) 在 LRGR 在人口密度和人的活动索引(HAI ) 之间有一种好线性回归关系,它反映在场的那个人口密度罐头在 LRGR 的自然生态系统上的人工的骚乱。(4 ) 人口密度的增加导致 NDVI 索引的减少。 | SONG GuoBao LI ZhengHai BAO YaJing LU HaiYan GAO JiXi WANG HaiMei XU Tian CHENG Yan | 2007 | Chinese Science Bulletin2007，52，A02： | 4 |
| 6 | Increased mercury pollution revealed by tree rings from the China's Tianshan Mountains显示文摘Mercury (Hg)can be transported globally by the atmospheric circulation and it accumulates and biomagnifies along food chains [1,2].Due to its threats to human health and wildlife when converted to the neurotoxin methyl mercury,variations in Hg concentration in various ecosystems were paid more attention by scientists recently.Natural processes such as geothermal activities, volcanic activities,and weathering of Hg-containing rocks,can release a mass of Hg to the environment.Anthropogenic emissions had become the main atmospheric pollution source since the Industrial Revolution.A recent study indicated that half of the Hg presented in atmosphere was sourced from human activities and about 73%total mercury was released after 1850[3].Aiming to reduce the impact of Hg to environmental and human health,UNEP (United Nations Environment Programme)passed the Minamata Convention in 2013to limit Hg emission through contro|ling technologies on air pollution. | Huhu Kang Xiaohong Liu Junming Guo Guobao Xu Guoju Wu Xiaomin Zeng Bo Wang Shichang Kang | 2018 | Science Bulletin2018，63，20： | 4 |
| 7 | Induction of Wnt signaling antagonists and p21-activated kinase enhances cardiomyocyte proliferation during zebrafish heart regeneration显示文摘Heart regeneration occurs by dedifferentiation and proliferation of pre-existing cardiomyocytes(CMs).However,the signaling mechanisms by which injury induces CM renewal remain incompletely understood.Here,we find that cardiac injury in zebrafish induces expression of the secreted Wnt inhibitors,including Dickkopf 1(Dkkl),Dkk3,secreted Frizzled-related protein 1(sFrpl),and sFrp2,in cardiac tissue adjacent to injury sites.Experimental blocking of Wnt activity via Dkkl overexpression enhances CM proliferation and heart regeneration,whereas ectopic activation of Wnt8 signaling blunts injury-induced CM dedifferentiation and proliferation.Although Wnt signaling is dampened upon injury,the cytoplasmic β-catenin is unexpectedly increased at disarrayed CM sarcomeres in myocardial wound edges.Our analyses indicated that p21-activated kinase 2(Pak2)is induced at regenerating CMs,where it phosphorylates cytoplasmic β-catenin at Ser 675 and increases its stability at disassembled sarcomeres.Myocardial-specific induction of the phospho-mimeticβ-catenin(S675E)enhances CM dedifferentiation and sarcomere disassembly in response to injury.Conversely,inactivation of Pak2 kinase activity reduces the Ser 675-phosphorylatedβ-catenin(pS675-β-catenin)and attenuates CM sarcomere disorganization and dedifferentiation・Taken together,these findings demonstrate that coordination of Wnt signaling inhibition and Pak2/pS675-βYatenin signaling enhances zebrafish heart regeneration by supporting CM dedifferentiation and proliferation. | Xiangwen Peng Kaa Seng Lai Peilu She Junsu Kang Tingting Wang Guobao Li Yating Zhou jianjian Sun Daqing Jin Xiaolei Xu Lujian Liao Jiandong Liu Ethan Lee Kenneth D.Poss Tao P.Zhong | 2021 | Journal of Molecular Cell Biology2021，13，1： | 3 |
| 8 | Analysis of land use change and its driving force in the Longitudinal Range-Gorge Region显示文摘关于陆地使用度,陆地使用变化率以及各种各样的陆地使用的地区性的差别的研究录入西南纵的范围峡区域(LRGR ) 被执行了在上地区性并且县规模。从社会经济的看法,我们也在研究区域分析了陆地使用变化的开车机制和各种各样的驱动力的相应空间范围。研究结果显示在地区性的规模上,农田,森林和草地在 LRGR,和草地严厉地衰退的陆地使用表演的结构的变化填写陆地使用的主要身体,农田增加和森林保持稳定。在县规模上,陆地使用被那陆地使用水平描绘是相对低的,并且陆地使用度,全面变化率和相对变化在不同陆地使用类型之中评价仍然存在。由分析,在 LRGR 的陆地使用变化被投资主要驾驶人力和物理资源,社会经济产量水平,自然灾难骚乱的紧张和工人的教育水平的紧张。然而, regionalism 在不同驱动力类型的影响范围存在。 | LI ZhengHai SONG GuoBao LU HaiYan BAO YaJing GAO JiXi WANG HaiMei XU Tian CHENG Yan | 2007 | Chinese Science Bulletin2007，52，A02： | 2 |
| 9 | Electrochemiluminescence Imaging Techniques for Analysis and Visualizing显示文摘Electrochemiluminescence(ECL)-based imaging analysis is a dominant method to inspect the electrode composition,to study electrochemical reaction kinetics at a microscopic level,and also a rapid emerging technology in bioanalysis with high spatiotemporal resolutions,high-throughput and visualization characteristics.In comparison with other imaging microscopes,an optical excitation is not involved in imaging,thus the approach is free from background noise resulting in a low detec-tion limit.In this review work,the principle of ECL,its unique natures compared to other luminescence techniques were briefed at first.Then after,the progress and basic principles of ECL imaging were summarized.Furthermore,recent and representative advances of ECL imaging for visualizing and sensing applications were reviewed.Finally,the perspectives in ECL imaging for further perspective were discussed. | Tadesse Haile Fereja Fangxin Du Chao Wang Dmytro Snizhko Yiran Guan Guobao Xu | 2020 | Journal of Analysis and Testing2020，4，2： | 2 |
| 10 | Seed-mediated growth method for high-quality noble metal nanocrystals显示文摘This review highlights work from the authors' laboratory on the recent development of seed-mediated growth method for noble metal nanocrystals. The seed-mediated growth method has become one of the most efficient and versatile methods for synthe-sizing high-quality noble metal nanocrystals. The seed-mediated growth method can separate the nucleation and growth stages of metal nanocrystals, and thus provide better control over the size, size distribution, and crystallographic evolution of metal nanocrystals. Because of its high controllability, the seed-mediated growth method is especially promising in providing mechanistic insights into the growth mechanisms of noble metal nanocrystals. In this review, the thermodynamic and kinetic parameters for the nucleation and growth of noble metal nanocrystals are systematically summarized. Mechanistic understanding of these parameters is provided. These studies provide useful guidelines for the rational design and synthesis of novel noble metal nanocrystals with high quality. | NIU WenXin ZHANG Ling XU GuoBao | 2012 | Science China Chemistry2012，55，11： | 2 |
| 11 | The mechanism of inhibition by zinc phosphate in an epoxy coating显示文摘 | Yongsheng Hao Fuchun Liu En-Hou Han Saima Anjum Guobao Xu | 2012 | Corrosion Science2012，，： | 1 |
| 12 | Electroehemiluminescent microoptoprobe with mini-grid working electrode and self-contained sample container显示文摘 | WANG Haiyan XU Guobao DONG Shaojun | 2002 | Electrochem Commun2002，4，： | 1 |
| 13 | Electrochemiluminescence sensor using tris (2, 2'-bipyridyl) ruthenium ( Ⅱ ) immobilized in Eastman-AQ55D-siliea composite thin-films显示文摘 | WANG Haiyan XU Guobao DONG Shaojun | 2003 | Anal Chim Acta2003，480，： | 1 |
| 14 | Applications and trends in electrochemiluminescence 显示文摘 | HU Lianzhe XU Guobao | 2010 | Chem Soc Rev2010，39，8： | 1 |
| 15 | Gap engineering of sandwich plasmonic gap nanostructures for boosting plasmon-enhanced electrocatalysis显示文摘Plasmonic catalysis is emerging as a dynamic field in heterogeneous catalysis and holds great promise for the efficient utilization of solar energy.Central to the development of plasmonic catalysis is the design of efficient plasmonic nanocatalysts.In this report,plasmonic gap nanostructures(PGNs)on the basis of Au@poly(o-phenylenediamine)(POPD)@Pd sandwich nanostructures are synthesized as plasmonic nanocatalysts by an in-situ reduction synthetic strategy,which allows for the precise engineering of the POPD gap size between plasmonic Au and catalytic Pd components.The introduction of conducting POPD nanogap in PGNs not only effectively enhances their light harvesting capability,but also provides an effective charge transfer channel for harnessing the photogenerated hot charge carriers.In this respect,distinct gap-dependent performances in plasmon-enhanced electrocatalysis of ethanol oxidation reactions(EOR)are demonstrated with the PGN nanocatalysts and over 2.5 folds of enhancement can be achieved.A volcano plot is derived to describe the relationship between the catalytic activities and gap size of the PGN nanocatalysts,which is well explained by the interplay of their light harvesting and charge transport capabilities.These results highlight the importance of gap engineering in PGNs for plasmonic catalysis and offer the promise of developing efficient plasmonic nanocatalysts for other heterogeneous catalytic reactions. | Lu Cheng Fengxia Wu Yu Tian Xiali Lv Fenghua Li Guobao Xu Hsien-Yi Hsu Yongjun Zhang Wenxin Niu | 2023 | Nano Research2023，16，7： | 1 |
| 16 | Follow-Up of High-Intensity Focused Ultrasound Treatment for Patients with Hepatocellular Carcinoma显示文摘 | Guoliang Xu Guangyu Luo Longjun He Jianjun Li Hongbo Shan Rong Zhang Yin Li Xiaoyan Gao Shiyong Lin Guobao Wang | 2011 | Ultrasound in Medicine & Biology2011，，12： | 1 |
| 17 | Application and verification of simultaneous determination of cellulose δ^(13)C and δ^(18)O in Picea shrenkiana tree rings from northwestern China using the high-temperature pyrolysis method显示文摘Stable isotopes in tree-ring cellulose provide important data in ecological,archaeological,and paleoenvironmental researches,thereby,the demand for stable isotope analyses is increasing rapidly.Simultaneous measurement of cellulose δ^(13)C and δ^(18)O values from tree rings would reduce the cost of isotopic commodities and improve the analytical efficiency compared with conventional separate measurement.In this study,we compared the δ^(13)C and δ^(18)O values of tree-ringα-cellulose from Tianshan spruce(Picea schrenkiana)in an arid site in the drainage basin of the Urumqi River in Xinjiang of northwestern China based on separate and simultaneous measurements,using the combustion method(at1050°C)and the high-temperature pyrolysis method(at 1350°C and 1400°C).We verified the results of simultaneous measurement using the outputs from separate measurement and found that both methods(separate and simultaneous)produced similar δ^(13)C values.The two-point calibrated method improved the results(range and variation)of δ^(13)C and δ^(18)O values.The mean values,standard deviations,and trends of the tree-ring δ^(13)C obtained by the combustion method were similar to those by the pyrolysis method followed by two-point calibration.The simultaneously measured δ^(18)O from the pyrolysis method at 1400°C had a nearly constant offset with that the pyrolysis method at 1350°C due to isotopic-dependence on the reaction temperature.However,they showed similar variations in the time series.The climate responses inferred from simultaneously and separately measured δ^(13)C and δ^(18)O did not differ between the two methods.The tree-ring δ^(13)C and δ^(18)O values were negatively correlated with standardized precipitation evapotranspiration index from May to August.In addition,the δ^(18)O was significantly correlated with temperature(positive),precipitation(negative),and relative humidity(negative)from May to August.The tree-ring δ^(13)C and δ^(18)O values determined simultaneously through the high-temperature pyrolysis method could produce acceptable and reliable stable isotope series.The simultaneous isotopic measurement can greatly reduce the cost and time requirement compared with the separate isotopic measurement.These results are consistent with the previous studies at humid sites,suggesting that the simultaneous determination of δ^(13)C and δ^(18)O in tree-ringα-cellulose can be used in wide regions. | XU Guobao LIU Xiaohong SUN Weizhen CHEN Tuo ZHANG Xuanwen ZENG Xiaomin WU Guoju WANG Wenzhi QIN Dahe | 2018 | Journal of Arid Land2018，10，6： | 1 |
| 18 | An im- proved adaptive fusion edge detection algorithm for road ima- ges 显示文摘 | Xu Guobao Zhou Meijuan Xiong Zenggang | 2012 | Advances in Information Sciences and Service Sci- ences2012，4，4： | 1 |
| 19 | Recent advances in electrochemiluminescence imaging analysis显示文摘Electrochemiluminescence(ECL)has been widely applied in imaging owing to features that distinguish it from other microscopic techniques and electrochemical methods,including its high signal-to-noise ratio,remarkable sensitivity,wide linear range,high spatiotemporal resolution,and near-zero background light.Imaging technology based on ECL has been used in the fields of immunosensing,pathological cell detection,and drug analysis.Additionally,its simple operation and ability to detect dynamic processes and catalytic sites strengthen its potential for research on material surfaces and interfaces,in vivo biological analysis,and cell visualization.At the same time,the emergence of a variety of nanomaterials and new microscopic analysis equipment has further promoted the development of high-resolution ECL imaging technology.This paper introduces the development of ECL technology and the mechanisms of the main ECL systems.It then describes various forms of ECL imaging methods,and reviews research progress on ECL imaging technology in the fields of single-particle imaging,fingerprint structure analysis,and single-cell microscopic imaging.Finally,the authors offer their views about the prospects for ECL imaging technology. | Chengda Meng Sara Knežević Fangxin Du Yiran Guan Frédéric Kanoufi Neso Sojic Guobao Xu | 2022 | eScience2022，2，6： | 0 |
| 20 | Boric Acid-Based Dual Modulation Photoluminescent Glucose Sensor Using Thioglycolic Acid-Capped CdTe Quantum Dots显示文摘Most luminescent glucose sensors based on the interaction of glucose with organic boric acids or borates.Herein,a new luminescent glucose sensor is designed using thioglycolic acid-capped CdTe quantum dots in the presence of cheap inorganic boric acid.Both peak position and intensities change upon the addition of glucose because of the interaction of boric acid with glucose and thioglycolic acid-capped CdTe quantum dots,which enables glucose detection by either color change or intensity change.The luminescent intensities change linearly with glucose concentrations in the ranges from 0.03 to 1 mM and 1–25 mM with a detection limit of 10μM(S/N=3).Moreover,glucose concentrations can be conveniently detected by color change in the range from 1 mM–25 mM.It displays a highly selective response to glucose over other interfering but biologically important saccharides,amino acids,and common ions.Graphical Abstract A thioglycolic acid-capped CdTe QD-based sensor can detect glucose with wide linear range by change in intensity or color in the presence of cheap inorganic boric acid. | Saadat Majeed WenyueGao Jianping Lai Chao Wang JianpingLi Zhongyuan Liu Guobao Xu | 2017 | Journal of Analysis and Testing2017，1，4： | 0 |
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