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| 1 | Prediction of recent bank retreat processes at typical sections in the Jingjiang Reach显示文摘The Jingjiang Reach is experiencing continuous channel degradation owing to operation of the Three Gorges Project(TGP)in2003.Significant retreat processes at composite riverbanks have occurred at local sites of this reach,which may influence the stability of the river regime and the effect of existing river training works.Therefore,bank retreat plays a key role in fluvial processes of the Jingjiang Reach,and it is necessary to predict the long-term processes of bank retreat at typical sections in the reach.In this study,various factors influencing bank retreat in the Jingjiang Reach are investigated,based on bank erosion processes at four sections and the corresponding flow and sediment conditions.It is discovered that fluvial erosion intensity is a dominant factor in controlling the processes of bank retreat in the reach,although other factors,such as bank soil properties,can also influence bank retreat.The bankfull width at a section with severe bank erosion since 2002 is defined as being equal to the sum of the bankfull width in 2002 and the accumulated bank retreat distance after 2002.The magnitude of the bankfull width can be expressed as an exponential function of the previous 5-year average fluvial erosion intensity during flood seasons.The accumulated distances of bank retreat at four sections over the period 2002–2012 are predicted using the proposed empirical relationships,with the calculated bank retreat processes agreeing well with observed data. | XIA JunQiang ZONG QuanLi ZHANG Yi XU QuanXi LI XiaoJuan | 2014 | Science China(Technological Sciences)2014，57，8： | 20 |
| 2 | Inhibitive effect on apoptosis in splenic lymphocytes of mice pretreated with Lingzhi (GanodermaLucidum) spores显示文摘OBJECTIVE: To investigate how the pretreatment of mice with Ganoderma spores affected the apoptosis of their splenic lymphocytes induced by dexamethasone after 19 days treatment.METHODS: Sixty Kunming mice were randomly divided into six groups: blank control groupdrenched with normal saline; a drug control group drenched with 150 mg/mL Ganoderma spores; a model group treated with saline; a low dose group with50 mg/mL Ganoderma spores; a moderate dose group with 100 mg/mL Ganoderma spores; and a high dose group with 150 mg/mL Ganoderma spores. The effect of Ganoderma spores on apoptosis in spleen lymphocytes was analyzed. All groups were treated for 19 days. On day 20, the model group and the 3 treatment groups were intraperitoneally injected dexamethasone to induce apoptosis. Splenic index and apoptosis indes were employed to measure cell apoptosis.RESULTS: The results showed that Ganoderma spores reduced the splenic index to different degrees in each group and the best effect was seen in the high dose group(P<0.05).Terminal dexynucleotidyl transferase(TdT)-mediated 2'-Deoxyuridine5'-Triphosphate nick end labeling staining revealed that the apoptotic index in all groups administered Ganoderma spores differed significantly from the model group, and a dose-response was observed.Flow cytometric analysis indicated that spleen lymphocyte apoptosis in the model group was extensive. Each dose of Ganoderma spores inhibited dexamethasone-induced apoptosis in spleen lymphocytes, and a dose-response was observed as well. The highest dose of Ganoderma spores decreased Malondialdehyde content in serum induced by dexamethasone(P<0.05).CONCLUSION:The findings imply that the pretreatment of the mice with Ganoderma spores could reduce the apoptosis rate induced by dexamethasone in their splenic lymphocytes. | Quanxi Wang Yifan Huang Baocheng Wu Jingliang Mei Honglei Zhang Baomin Qi | 2014 | Journal of Traditional Chinese Medicine2014，34，2： | 3 |
| 3 | Uncertainty analysis for integrated water system simulations using GLUE with different acceptability thresholds显示文摘Integrated water quantity and quality simulations have become a popular tool in investigations on global water crisis.For integrated and complex models,conventional uncertainty estimations focus on the uncertainties of individual modules,e.g.,module parameters and structures,and do not consider the uncertainties propagated from interconnected modules.Therefore,this study investigated all the uncertainties of integrated water system simulations using the GLUE(i.e.,generalized likelihood uncertainty estimation)method,including uncertainties associated with individual modules,propagated uncertainties associated with interconnected modules,and their combinations.The changes in both acceptability thresholds of GLUE and the uncertainty estimation results were also investigated for different fixed percentages of total number of iterations(100000).Water quantity and quality variables(i.e.,runoff and ammonium nitrogen)were selected for the case study.The results showed that module uncertainty did not affect the runoff simulation performance,but remarkably weakened the water quality responses as the fixed percentage increased during calibration and validation periods.The propagated uncertainty from hydrological modules could not be ignored for water quality simulations,particularly during validation.The combination of module and propagated uncertainties further weakened the water quality simulation performance.The uncertainty intervals became wider owing to an increase in the fixed percentages and introduction of more uncertainty sources.Moreover,the acceptability threshold had a negative nonlinear relationship with the fixed percentage.The fixed percentages(20.0%-30.0%)were proposed as the acceptability thresholds owing to the satisfactory simulation performance and noticeably reduced uncertainty intervals they produced.This study provided methodological foundations for estimating multiple uncertainty sources of integrated water system models. | ZHANG YongYong XIA Jun SHAO QuanXi LI Lu YEN Haw ZHAI XiaoYan ZHAO TongTieGang LIN KaiRong | 2021 | Science China(Technological Sciences)2021，64，8： | 3 |
| 4 | Regional frequency analysis and spatio-temporal pattern characterization of rainfall extremes in the Pearl River Basin, China显示文摘 | Tao Yang Quanxi Shao Zhen-Chun Hao Xi Chen Zengxin Zhang Chong-Yu Xu Limin Sun | 2009 | Journal of Hydrology2009，，3： | 1 |
| 5 | Carbon nanotube yarn strain sensors显示文摘 | Haibo Zhao Yingying Zhang Philip D Bradford Qian Zhou Quanxi Jia Fuh-Gwo Yuan Yuntian Zhu | 2010 | Nanotechnology2010，，30： | 1 |
| 6 | Ad- vance in the Research of Pharmacotogica显示文摘 | QUANXI MEI JINCHAO ZHANG HUI LIN et ai | 2013 | Medicinal Plant2013，4，6： | 1 |
| 7 | Regional frequency analysis and spatio-temporal pattern characterization of rainfall extremes in the Pearl River Basin, China显示文摘 | Tao Yang Quanxi Shao Zhen-Chun Hao Xi Chen Zengxin Zhang Chong-Yu Xu Limin Sun | 2009 | Journal of Hydrology2009，，3： | 1 |
| 8 | An extension of three- parameter Burrl distribution for low-flow frequency analysis显示文摘 | SHAO Quanxi CHEN T Q ZHANG Lu | 2008 | Computational Statistics & Data Analysis2008，52，： | 1 |
| 9 | Oxidative damage of dust storm fine particles instillation on lungs, hearts and livers of rats 显示文摘 | Meng Ziqiang Zhang Quanxi | 2006 | Environmental Toxicology and Pharmaco!ogy2006，22，： | 1 |
| 10 | A new method for modelling flow duration curves and predic ting streamflow regimes under altered land-use condi tions显示文摘 | Shao Quanxi Zhang Lu Chen Yongqin | 2009 | Hydrological Sciences Journal2009，54，3： | 1 |
| 11 | Parameter estimation and uncertainty analysis of SWAT model in upper reaches of the Heihe river basin显示文摘 | Zhang Li Zongxue Xu Quanxi Shao | 2009 | Hydrological Processes2009，23，19： | 1 |
| 12 | Oxidative damage of dust storm fine particles instillation on lungs, hearts and livers of rats 显示文摘 | Ziqiang Meng Quanxi Zhang | 2006 | Environmental Toxicology and Pharmacology2006，，22： | 1 |
| 13 | Creation and validation of a widely applicable multiple gene transfer vector system for stable transformation in plant显示文摘 | Quanxi Sun Jiang Liu Yaxiao Li Qin Zhang Shihua Shan Xinzheng Li Baoxiu Qi | 2013 | Plant Molecular Biology (-)2013，，4： | 1 |
| 14 | Damage effects of dust storm PM 2.5 on DNA in alveolar macrophages and lung cells of rats显示文摘 | Ziqiang Meng Quanxi Zhang | 2007 | Food and Chemical Toxicology2007，，8： | 1 |
| 15 | In vitro responses of rat alveolar macrophages to particle suspensions and water-soluble components of dust storm PM 2.5显示文摘 | Hong Geng Ziqiang Meng Quanxi Zhang | 2005 | Toxicology in Vitro2005，，5： | 1 |
| 16 | Regulating off-centering distortion maximizes photoluminescence in halide perovskites显示文摘Metal halide perovskites possess unique atomic and electronic configurations that endow them with high defect tolerance and enable high-performance photovoltaics and optoelectronics.Perovskite light-emitting diodes have achieved an external quantum efficiency of over 20%.Despite tremendous progress,fundamental questions remain,such as how structural distortion affects the optical properties.Addressing their relationships is considerably challenging due to the scarcity of effective diagnostic tools during structural and property tuning as well as the limited tunability achievable by conventional methods.Here,using pressure and chemical methods to regulate the metal off-centering distortion,we demonstrate the giant tunability of photoluminescence(PL)in both the intensity(>20 times)and wavelength(>180 nm/GPa)in the highly distorted halide perovskites[CH_(3)NH_(3)GeI_(3),HC(NH_(2))2GeI_(3),and Cs Ge I_(3)].Using advanced in situ high-pressure probes and first-principles calculations,we quantitatively reveal a universal relationship whereby regulating the level of off-centering distortion towards 0.2 leads to the best PL performance in the halide perovskites.By applying this principle,intense PL can still be induced by substituting CH_(3)NH_(3)^(+)with Cs^(+)to control the distortion in(CH_(3)NH_(3))_(1-x)Cs_(x)GeI_(3),where the chemical substitution plays a similar role as external pressure.The compression of a fully substituted sample of CsGe I_(3)further tunes the distortion to the optimal value at 0.7 GPa,which maximizes the emission with a10-fold enhancement.This work not only demonstrates a quantitative relationship between structural distortion and PL property of the halide perovskites but also illustrates the use of knowledge gained from high-pressure research to achieve the desired properties by ambient methods. | Xujie Lv Constantinos Stoumpos Qingyang Hu Xuedan Ma Dongzhou Zhang Songhao Guo Justin Hoffman Kejun Bu Xiaofeng Guo Yingqi Wang Cheng Ji Haijie Chen Hongwu Xu Quanxi Jia Wenge Yang Mercouri G.Kanatzidis Ho-Kwang Mao | 2021 | National Science Review2021，8，9： | 1 |
| 17 | A case study on Landscape Component Niche based on Landscape Pattern Indices: Yanchi,Ningxia Province, China显示文摘Yanchi County is located in the agro-pastoral ecotone and belongs to the ecologically fragile area of Northwest China.It is important to study the evolution of landscape pattern to curb its environmental degradation.In order to intuitively show how the landscape pattern of the study area changes over time,Landsat Thematic Mappers(TM)and Landsat Operational Land Imager(OLI)data of 1991,2000,2010 and 2017 were used.This paper attempts to apply niche theories and methods into landscape ecology,and constructs a niche model of landscape components by using'n-dimentional hypervolume niche theory'and landscape pattern indices.By evaluating the spatial and temporal evolution of niche from the perspective of two-dimensional space to reflect the changes of landscape pattern in the study area over the past 26 years,new theories and methods were introduced for the characterization of landscape pattern.The results indicate that:1)The larger the attribute and dominance value of landscape components,the higher the ecological niche and the stronger the control effect on the overall landscape.2)The ecological niche of each landscape component was significantly different,just as its control effect on the overall landscape.3)The dynamic change of the ecological niche of each landscape component was different,with grassland,unused land and arable land always in a high dominant position,although the ecological niche of construction land and water area was always low.In general,the introduction of niche theory into the landscape ecology provided a new method to study the changes in regional landscape pattern. | XiaoNing Zhang XueLu Liu Ghanney Philip XiaoDan Li QuanXi Wang YaNan Xu TingTing Hui | 2020 | Research in Cold and Arid Regions2020，12，1： | 1 |
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