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Wavelet Analysis and Nonparametric Test for Climate Change in Tarim River Basin of Xinjiang During 1959-2006

Chinese Geographical Science 2009年第4期19卷 306-313页

作者： XU Jianhua CHEN Yaning LI Weihong JI Minhe DONG Shan hong yulian The Research Center for East-West Cooperation in China East China Normal University Shanghai 200062 China Key Laboratory of Geographic Information Science Ministry of Education Shanghai 200062 China Key Laboratory of Oasis Ecology and Desert Environment Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China

Using wavelet analysis,regression analysis and the Mann-Kendall test,this paper analyzed time-series(1959-2006) weather data from 23 meteorological stations in an attempt to characterize the climate change in the Tarim River Basin of Xinjiang Uygur Autonomous Region,*** findings are as follows:1) In the 48-year study period,average annual temperature,annual precipitation and average annual relative humidity all presented nonlinear trends.2) At the 16-year time scale,all three climate indices unanimously showed a rather flat before 1964 and a detectable pickup *** the 8-year time scale,an S-shaped nonlinear and uprising trend was revealed with slight fluctuations in the entire process for all three ***,they all showed similar pattern of a slight increase before 1980 and a noticeable up-swing *** 4-year time scale provided a highly fluctuating pattern of periodical oscillations and spiral increases.3) Average annual relative humidity presented a negative correlation with average annual temperature and a positive correlation with annual precipitation at each time scale,which revealed a close dynamic relationship among them at the confidence level of 0.001.4) The Mann-Kendall test at the 0.05 confidence level demonstrated that the climate warming trend,as represented by the rising average annual temperature,was remarkable,but the climate wetting trend,as indicated by the rising annual precipitation and average annual relative humidity,was not obvious.

关键词： climate change nonlinear trend wavelet analysis Mann-Kendall test Tarim River Basin

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Combining BPANN and wavelet analysis to simulate hydro-climatic processes a case study of the Kaidu River, North-west China

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Frontiers of Earth Science 2013年第2期7卷 227-237页

作者： Jianhua XU Yaning CHEN Weihong LI Paul Y. PENG Yang YANG Chunan SONG Chunmeng-WEI yulian hong The Key Laboratory of GIScience of the Education Ministry of China The Research Center for East-West Cooperation in China East China Normal University Shanghai 200241 China The Key Laboratory of Oasis Ecology and Desert Environment Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences Urumqi 830011 China Department of Community Health and Epidemiology Queen's University Kingston K7L 3N6 Canada

Using the hydrological and meteorological data in the Kaidu River Basin during 1957-2008, we simulated the hydro-climatic process by back-propagation artificial neural network （BPANN） based on wavelet analysis （WA）, and then compared the simulated results with those from a multiple linear regression （MLR）. The results show that the variation of runoff responded to regional climate change. The annual runoff （AR） was mainly affected by annual average temperature （AAT） and annual precipitation （AP）, which revealed different varia- tion patterns at five time scales. At the time scale of 32-years, AR presented a monotonically increasing trend with the similar trend of AAT and AP. But at the 2-year, 4- year, 8-year, and 16-year time-scale, AR presented non-linear variation with fluctuations of AAT and AP. Both MLR and BPANN successfully simulated the hydro- climatic process based on WA at each time scale, but the simulated effect from BPANN is better than that from MLR.

关键词： hydro-climatic process Kaidu River simulation wavelet analysis (WA) back-propagation artificial neural network (BPANN) multiple linear regression (MLR)

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A quantitative assessment on groundwater salinization in the Tarim River lower reaches,Northwest China

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Research in Cold and Arid Regions 2014年第1期6卷 44-51页

作者： JianHua Xu Weihong Li yulian hong ChunMeng Wei Jie Tang The Research Center for East-West Cooperation in China the Key Laboratory of Geographic Information Sciencethe Ministry of Education of PRCEast China Normal University State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of Sciences

Based on monitored data from 840 samples, we assessed the spatial and temporal variability of groundwater salinization in the Tarim River lower reaches combining classical statistics and geostatistics. Results show that total dissolved solids （TDS） is significantly correlated with other related ions, such as Na＋, Mg2＋, Ca2-, C1- and K＋. TDS and underground water level have characteristics of spatial autocorrelation, both of which present the isotropic characteristic and con- form to the spherical model in each year from 2001-2009. TDS is basically greater than 1 g/L but less than 2 g/L in the Tarim River lower reaches, which indicates that salt stagnation pollution is more serious. The most serious salinization （3 g/L 〈 TDS _〈 35 g/L） contaminated area is mainly in the middle and lower part of the study area.

关键词： groundwater salinization assessment semivariogram geostatistics lower reaches of the Tarim River

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Spatial-temporal variations of vegetation cover in Yellow River Basin of China during 1998-2008

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Research in Cold and Arid Regions 2012年第3期4卷 211-221页

作者： Qin Nie JianHua Xu Zhuo Li yulian hong The Research Center for East-West Cooperation in China The Key Lab of GIScience of the Education Ministry PRCEast China Normal UniversityShanghai 200241China School of Environment and Planning Liaocheng UniversityLiaochengShandong 252059China

Using an integrated method combining wavelet analysis and non-parameter Mann-Kendall test, this paper analyzed spatial-temporal variations of vegetation cover in the Yellow River Basin based on SPOT-VEG images from 1998 to 2008 The results indicate：（1） Vegetation cover presented marked seasonal variation during the study period, with minima around winter and maxima in summer. The detail component D5 （with semi-period of 240 days） has presented a major contribution to the intra-armual variability. Forest vegetation presents a marked decreasing trend, while alpine shrubs, meadow, typical steppe, desert steppe, and forest （meadow） steppe vegetation all show a marked increasing trend. （2） Mean vegetation amount increased from the upper to lower reaches of the basin. It is low in the Ordos Plateau and Loess Plateau, and high in the southern Loess Plateau and the lower reaches. Amplitude of the annual phenological cycle pre- sents an opposite pattern in spatial distribution with that of the mean vegetation amount. （3） Vegetation cover presented a dominant positive inter-annual change trend, which implies that the eco-environment in the region has steadily improved. Only a few areas show a negative trend, which are located in the upper reaches and the southern Loess Plateau.

关键词： vegetation coverage dynamic NDVI time series Yellow River Basin wavelet analysis Mann-Kendall test

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集合经验模态分解和交叉小波在赣江流量与太阳黑子活动关系中的应用

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水资源与水工程学报 2018年第1期29卷 44-49页

作者：万智巍贾玉连洪祎君蒋梅鑫江西师范大学地理与环境学院鄱阳湖湿地与流域研究教育部重点实验室江西南昌330022 中国科学院地理科学与资源研究所陆地表层格局与模拟院重点实验室北京100101

为解决传统相关分析方法难以揭示出非线性、非平稳水文序列与外部强迫因子之间在不同时间尺度、不同频域下的相关关系,提出一种结合EEMD(集合经验模态分解)和CWT(交叉小波变换)的综合分析方法,并将其应用于赣江长时间流量序列与同期太... 详细信息

为解决传统相关分析方法难以揭示出非线性、非平稳水文序列与外部强迫因子之间在不同时间尺度、不同频域下的相关关系,提出一种结合EEMD(集合经验模态分解)和CWT(交叉小波变换)的综合分析方法,并将其应用于赣江长时间流量序列与同期太阳黑子数序列的多尺度相关分析之中。研究结果表明:1950-2015年赣江流量序列EEMD分解的IMF1分量的波动振幅最大,频率最高,代表了原始序列中的主要变化因素,是水文序列非线性和非平稳特征的体现。同期太阳黑子数序列的EEMD分解结果表明:1950-1970年为太阳黑子数上升阶段,1970-2015年为下降阶段。CWT分析表明,在11a周期尺度上赣江流量与太阳黑子数之间由负相关逐渐顺时针转为相差1/4个周期,再转为正相关。其中1950-2000年,二者的相关系数在0.6以上,2001-2015年相关系数在0.4以上。结果表明EEMD-CWT综合分析可以有效利用EEMD方法将原始信号进行分解,以得到具有平稳性的IMF分量,并以此为基础通过CWT方法得到二者在时域和频域上的相关关系变化过程。该方法可以为探究相关水文气象序列与外部强迫因素之间的多尺度相关关系提供新的思路和技术手段。

关键词：集合经验模态分解交叉小波变换流量太阳黑子赣江

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Review on Metallization Approaches for High-Efficiency Silicon Heterojunction Solar Cells

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Transactions of Tianjin University 2022年第5期28卷 358-373页

作者： yulian Zeng Chen-Wei Peng Wei hong Shan Wang Cao Yu Shuai Zou Xiaodong Su School of Physical Science and Technology Jiangsu Key Laboratory of Thin FilmsSoochow UniversitySuzhou 215006China Suzhou Maxwell Technologies Co. Ltd.Suzhou 215200China Suzhou Isilver Materials Co. Ltd.Suzhou 215129China

Crystalline silicon(c-Si)heterojunction(HJT)solar cells are one of the promising technologies for next-generation industrial high-efficiency silicon solar cells,and many efforts in transferring this technology to high-volume manufacturing in the photovoltaic(PV)industry are currently *** is of vital importance to the PV performance and long-term reliability of HJT solar *** this review,we summarize the development status of metallization approaches for highefficiency HJT solar *** conventional screen printing technology,to avoid the degradation of the passivation properties of the amorphous silicon layer,a low-temperature-cured(<250℃)paste and process are *** process,in turn,leads to high line/contact resistances and high paste *** improve the conductivity of electrodes and reduce the metallization cost,multi-busbar,fine-line printing,and low-temperature-cured silver-coated copper pastes have been *** addition,several potential metallization technologies for HJT solar cells,such as the Smart Wire Contacting Technology,pattern transfer printing,inkjet/FlexTrailprinting,and copper electroplating,are discussed in detail.B ased on the summary,the potential and challenges of these metallization technologies for HJT solar cells are analyzed.

关键词： Silicon solar cells Passivating-contact Heterojunction Metallization Electrode

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Identification,bioinformatic analysis and expression profiling of candidate mRNA-like non-coding RNAs in Sus scrofa

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Journal of Genetics and Genomics 2009年第12期36卷 695-702页

作者： Bang Xiao Xingju Zhang Yong Li Zhonglin Tang Shulin Yang yulian Mu Wentao Cui hong Ao Kui Li Key Laboratory of Agricultural Animal Genetics Breeding and Reproduction of Ministry of Education of China Huazhong Agricultural UniversityWuhan 430070 China Key Laboratory of Farm Animal Genetic Resources and Utilization of Ministry of Agriculture of.China Institute of Animal ScienceChinese Academy of Agricultural Sciences Beijing 100193 China

Messenger RNA-like non-coding RNAs （mlncRNAs） are a newly identified group of non-coding RNAs （ncRNAs） that may be involved in a number of critical cellular events. In this study, 93 candidate porcine mlncRNAs were obtained by computational prediction and screening, among which 72 were mapped to the porcine genome. Further analysis of 8 representative candidates revealed that these mlncRNA candidates are not highly conserved among species. Remarkably, one of the candidates, sTF35495, was found to be precursor of a putative porcine microRNA. By RACE PCR, we determined that the full length of sTF35495 was 3 kb. The protein-coding potential of this RNA was tested in silico with no significant finding. Semi-quantitative RT-PCR analysis of the subgroup of 8 candidates revealed two distinct expression profiles and two molecules were further validated by real-time PCR. The predicted pre-microRNA sequence in this study provides a potentially interesting insight into the in vivo function of porcine mlncRNAs and our findings suggest that they play key biological roles in Sus scrofa.

关键词： putative porcine mlncRNA chromosome localization interspecies conservation pre-microRNA RACE expression profiling qPCR

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纺织品洗涤过程中纤维微塑料的形成因素分析

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纺织学报 2022年第5期43卷 195-201页

作者：崔玉莲刘红青岛大学纺织服装学院山东青岛266071

为明晰纺织品洗涤过程对纤维微塑料形成的影响,分析了目前纤维微塑料在纺织品生命周期中的来源及存在方式,综述了纤维种类、纱线结构、织物组织、后整理过程对纤维微塑料形成的影响,并结合洗衣机洗涤机制及洗涤参数对洗涤过程纤维微塑... 详细信息

为明晰纺织品洗涤过程对纤维微塑料形成的影响,分析了目前纤维微塑料在纺织品生命周期中的来源及存在方式,综述了纤维种类、纱线结构、织物组织、后整理过程对纤维微塑料形成的影响,并结合洗衣机洗涤机制及洗涤参数对洗涤过程纤维微塑料形成机制进行分析。分析认为:从合成纤维纺织品中脱落的纤维微塑料是环境中微塑料来源之一,洗涤过程中摩擦力对衣物磨损较大,是造成纤维微塑料脱落的重要原因;展望了纺织行业纤维微塑料的未来研究目标,以期共同推进洗涤、烘干程序优化及过滤处理等相关技术的升级;未来研究应从多角度出发,加强环境优化和纺织领域的结合。

关键词：纤维微塑料微塑料纺织品洗衣机洗涤洗涤参数纺织品生命周期

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Landscape of Scholarship on Principal Training in China from 1989 to 2008

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Frontiers of Education in China 2011年第3期6卷 342-360页

作者： Shuangye CHEN yulian ZHENG Leslie N.K.LO Department of Educational Administration and Policy The Chinese University of Hong KongHong KongChina

The past two decades have witnessed the great developments in principal training in *** on principal training in China is increasing in quantity and quality with its expanding *** purpose of this paper is to explore and analyze the changing landscape of scholarship on principal training in China by examining the quantity of publications,themes covered,methodological approaches and the status of articles published from 1989 to 2008,as listed in the Chinese Database of *** is the first serious academic effort to review and reflect on the Chinese scholarship of principal training and school leadership *** conclusion,suggestions are outlined for future development of this academic field in China.

关键词： principal training Chinese academic journals school leadership development

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慢性阻塞性肺疾病患者长期家庭氧疗护理的研究进展

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中华护理杂志 2019年第11期54卷 1746-1751页

作者：李育莲李红福建医科大学护理学院福州市350004 福建省立医院护理部

本文通过系统地回顾和分析国内外长期家庭氧疗的相关指南及文献,对护理人员在长期家庭氧疗管理中的角色及职责、长期家庭氧疗患者的评估、适用人群的筛选、氧流量的调整、氧疗时长、其他联合治疗以及健康教育等护理实践内容进行梳理,并... 详细信息

本文通过系统地回顾和分析国内外长期家庭氧疗的相关指南及文献,对护理人员在长期家庭氧疗管理中的角色及职责、长期家庭氧疗患者的评估、适用人群的筛选、氧流量的调整、氧疗时长、其他联合治疗以及健康教育等护理实践内容进行梳理,并提出目前长期家庭氧疗存在的不足,旨在为制订长期家庭氧疗的标准化护理实践内容提供依据,以期为长期家庭氧疗患者提供更好的护理服务。

关键词：慢性阻塞性肺疾病长期家庭氧疗护理综述

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