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Centers of endemism and diversity patterns for typhlocybine leafhoppers （Hemiptera： Cicadellidae： Typhlocybinae） in China

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Insect Science 2014年第4期21卷 523-536页

作者： Shuai Yuan Min Huang xiu-Shuang wang Li-Qiang ji Ya-Lin Zhang Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Beijing University of Chinese Academy of Sciences Beijing Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education Entomological Museum Northwest A&F University Yangling Shaanxi China

This study identifies ＇centers of endemism＇ for typhlocybine leafhoppers in China, revealing diversity patterns and congruence of patterns between total species rich- ness and endemism. Distribution patterns of 774 Typhlocybinae （607 described and 167 undescribed species） were mapped on a 1.5° × 1.5° latitude/longitude grid. Total species richness, endemic species richness and weighted endemism richness were calculated for each grid cell. Grid cells within the top 5% highest values of weighted endemism richness were considered as ＇centers of endemism＇. Diversity patterns by latitude and altitude were obtained through calculating the gradient richness. A congruence of diversity patterns between total species richness and endemism was confirmed using correlation analysis. To investigate the bioclimatic factors （19 variables） contributing to the congruence be- tween total species richness and endemism, we compared the factor＇s difference between non-endemic and endemic species using the Kruskal-Wallis test. Eleven centers of en- demism, roughly delineated by mountain ranges, were identified in central and southern China, including the south Yunnan, Hengduan Mountains, Qinling Mountains, Hainan Is- land, Taiwan Island and six mountain areas located in western Sichuan, northwest Fujian, southeast Guizhou, southeast Hunan, central and western Guangdong, and north Zhejiang. Total species richness and endemic species richness decreased with increased latitude and had a consistent unimodal response to altitude. The proportions of endemism decreased with increased latitude and increased with rising altitude. Diversity patterns between total species richness and endemism were highly consistent, and ＇Precipitation of Coldest Pe- riod＇ and ＇Temperature of Coldest Period＇ may contribute to the congruence of pattern. Migration ability may play a role in the relationship of endemism and species richness; climate, environment factors and important geologic isolation events can also

关键词： biogeography centers of endemism diversity pattern leafhopper Quater-nary Typhlocybinae

Non-negative matrix factorization based unmixing for principal component transformed hyperspectral data

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Frontiers of Information Technology & Electronic Engineering 2016年第5期17卷 403-412页

作者： xiu-rui GENG Lu-yan ji Kang SUN Key Laboratory of Technology in Geo-spatial Information Processing and Application System Institute of Electronics Chinese Academy of Sciences Beijing 100190 China MOE Key Laboratory for Earth System Modeling Center for Earth System Science Tsinghua University Beijing 100084 China The 54th Research Institute of China Electronics Technology Group Corporation Shijiazhuang 050000 China

Non-negative matrix factorization(NMF) has been widely used in mixture analysis for hyperspectral remote sensing. When used for spectral unmixing analysis, however, it has two main shortcomings:(1) since the dimensionality of hyperspectral data is usually very large, NMF tends to suffer from large computational complexity for the popular multiplicative iteration rule;(2) NMF is sensitive to noise(outliers), and thus the corrupted data will make the results of NMF meaningless. Although principal component analysis(PCA) can be used to mitigate these two problems, the transformed data will contain negative numbers, hindering the direct use of the multiplicative iteration rule of NMF. In this paper, we analyze the impact of PCA on NMF, and find that multiplicative NMF can also be applicable to data after principal component transformation. Based on this conclusion, we present a method to perform NMF in the principal component space, named ‘principal component NMF'(PCNMF). Experimental results show that PCNMF is both accurate and time-saving.

关键词： Non-negative matrix factorization(NMF) Principal component analysis(PCA) Endmember Hyperspectral

Microstructure Transformation Behaviour of 610 MPa HSLA Steel Plate for 150000 m^3 Oil Storage Tank Construction

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Journal of Iron and Steel Research International 2010年第2期17卷 48-52页

作者： SUN Wei-hua wang Guo-dong ZHANG ji-ming XIA Dian-xiu State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China jigang Group Co Ltd Jinan 250101 Shandong China

Static and dynamic continuous cooling transformations （CCT） of 610 MPa HSLA steel plate for 150000 m^3 oil storage tank construction were measured by using an MMS200 thermomechanical simulation system. It was found that with the increase in cooling rate, the proeutectoid ferrite, pearlite, granular bainite, and lath bainite appeared in the transformed microstructure. Compared with those of static CCT, the transformation points of acicular ferrite, granular bainite, and lath bainite in the dynamic CCT curve were shifted to the left, resulting in an increased acicular ferrite and bainite transformation area.

关键词： steel plate oil storage mierostructure transformation CCT curve tempering

Spatial distribution of dissolved Pb,Hg,Cd,Cu and As in the Bohai Sea

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Journal of Environmental Sciences 2007年第9期19卷 1061-1066页

作者： wang Chang-you wang xiu-lin College of Chemistry and Chemical Engineering Ocean University of China Qingdao 266003 China.

Characteristics of the spatial distribution of selected dissolved heavy metals were analyzed during large scale surveys from August t2 to 25, 2003 in the Bohai Sea. Dissolved Pb was the only element with average concentrations higher than the grade-one sea water quality standard of China. The spatial distribution of dissolved Pb in surface water was similar to those of Cd, Cu and As, where the isopleths generally indicated decreasing values from the bays to the central areas. Only for Hg did the high concentrations not only appear in Liaodong Bay, Bohai Bay and Laizhou Bay, but also in the Central Area, viz. not only in inshore but also in offshore areas. Vertical distributions of dissolved Pb, Cd, Cu and As were largely uniform, while that of dissolved Hg increased with depth. We infer that the input of pollutants from land was the main influencing factor for the detected distribution patterns of dissolved heavy metals, followed by the dynamics of sea water, release from bottom sediments and biochemical processes. Comparing with historical data, average concentrations of dissolved heavy metals appear to decline in recent years.

关键词： dissolved heavy metals spatial distribution pollution surveys Bohai Sea

FINITE ELEMENT METHODS FOR THE NAVIER-STOKES EQUATIONS BY H(div)ELEMENTS

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Journal of Computational Mathematics 2008年第3期26卷 410-436页

作者： Junping wang Xiaoshen wang xiu Ye Division of Mathematical Sciences National Science Foundation Arlington VA 22230 USA Department of Mathematics University of Arkansas at Little Rock Little Rock AK 72204 USA

We derived and analyzed a new numerical scheme for the Navier-Stokes equations by using H（div） conforming finite elements. A great deal of effort was given to an establishment of some Sobolev-type inequalities for piecewise smooth functions. In particular, the newly derived Sobolev inequalities were employed to provide a mathematical theory for the H（div） finite element scheme. For example, it was proved that the new finite element scheme has solutions which admit a certain boundedness in terms of the input data. A solution uniqueness was also possible when the input data satisfies a certain smallness condition. Optimal-order error estimates for the corresponding finite element solutions were established in various Sobolev norms. The finite element solutions from the new scheme feature a full satisfaction of the continuity equation which is highly demanded in scientific computing.

关键词： Finite element methods Navier-Stokes equations CFD

Reconstruction of paleo river systems and distribution of sedimentary facies of Shanxi and lower Shihezi formations in southern Ordos basin

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Journal of China University of Mining and Technology 2008年第2期18卷 241-244页

作者： wang Chao-yong wang Ze-cheng wang ji-lin BAO Yuan HU xiu-mei School of Mineral Resources ＆ Earth Science China University of Mining ＆ Technology Xuzhou Jiangsu 221008 China Petroleum Exploration and Development Research Institute PetroChina Beijing 100083 China

The study area is located in the south of Huanxian county,in Yan'an and Puxian counties and to the north of Xi'*** Shanxi and lower Shihezi formations are important gas-bearing *** our analysis of the direction of rivers,the contents of stable heavy minerals and of feldspar of palaeo river systems,the study area is divided into six palaeodrainage patterns corresponding to six feldspar regions and six sedimentary facies *** this basis,the distribution of sedimentary facies was also *** the Shanxi stage,a delta front was deposited in the Huanxian region and delta plains and fronts were deposited in the Pingliang,Chunhua-Yaoxian and Hancheng-Chengcheng *** the Yan'an-Daning region,only a delta front was *** distribution of sedimentary facies in the earlier Shihezi stage originated from the Shanxi stage.A delta front was developed in the Huanxian region while a delta plain and front developed in the Pingliang-Zhenyuan region during the same *** originated only in the Zhenyuan-Huanxian-Huachi-Zhengning and Daning-jixian *** analytical method shows that different palaeodrainage patterns can be effectively distinguished in order to forecast sedimentary facies.

关键词： Ordos basin Shanxi formation lower Shihezi formation sedimentary facies palaeodrainage patterns

Exogenous Nitric Oxide Involved in Subcellular Distribution and Chemical Forms of Cu^(2+) Under Copper Stress in Tomato Seedlings

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Journal of Integrative Agriculture 2013年第10期12卷 1783-1790页

作者： DONG Yu-xiu wang xiu-feng CUI xiu-min Key Laboratory of Crop Biology Shandong Agricultural University College of Resources and Environment Shandong Agricultural University

Nitric oxide（NO）,a bioactive signaling molecule,serves as an antioxidant and anti-stress agent under abiotic stress.A hydroponics experiment was conducted to investigate the effects of sodium nitroprusside（SNP）,a NO donor,on tomato seedlings exposed to 50 μmol L-1CuCl *** results show that copper is primarily stored in the soluble cell sap fraction in the roots,especially after treatment with Cu＋SNP treatment,which accounted for 66.2% of the total copper *** copper concentration gradually decreased from the roots to the *** the leaves,exogenous NO induces the storage of excess copper in the cell *** stress decreases the proportion of copper integrated with pectates and proteins,but exogenous NO remarkably reverses this *** alleviating effect of NO is blocked by ***,exogenous NO is likely involved in the regulation of the subcellular copper concentrations and its chemical forms under copper *** exogenous NO inhibited the absorption and transport of excess copper to some extent,the copper accumulation in tomato seedlings significantly increased under copper *** use of exogenous NO to enhance copper tolerance in some plants is a promising method for copper remediation.

关键词： tomato seedlings nitric oxide copper stress subcellular distribution chemical form

Long-term efficacy of perioperative chemoradiotherapy on esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2010年第13期16卷 1649-1654页

作者： Lv, jin Cao, xiu-Feng Zhu, Bin ji, Lv Tao, Lei wang, Dong-Dong Nanjing Med Univ Affiliated Nanjing Hosp 1 Dept Surg Ctr Oncol Nanjing 210006 Jiangsu Peoples R China

AIM: To investigate the role of perioperative chemoradiotherapy (CRT) in the treatment of locally advanced thoracic esophageal squamous cell carcinoma (ESCC). METHODS: Using preoperative computed tomography (CT)-based staging criteria, 238 patients with ESCC (stage ⅡⅢ ) were enrolled in this prospective study between January 1997 and June 2004. With informed consent, patients were randomized into 3 groups: preoperative CRT (80 cases), postoperative CRT (78 cases) and surgery alone (S) (80 cases). The 1-, 3-, 5and 10-year survival were followed up. Progressionfree survival (PFS) was chosen as the primary endpoint by treatment arm measured from study entry until documented progression of disease or death from any cause. The secondary endpoint was overall survival (OS) determined as the time (in months) between the date of therapy and the date of death. Other objectives were surgical and adjuvant therapy ***: With median follow-up of 45 mo for all the enrolled patients, significant differences in the 1-, 3-, 5-, 10-year OS (91.3%, 63.5%, 43.5%, 24.5% vs 91%, 62.8%, 42.3%, 24.4% vs 87.5%, 51.3%, 33.8%, 12.5%, P = 0.0176) and PFS (89.3%, 61.3%, 37.5%, 18.1% vs 89.1%, 61.1%, 37.2%, 17.8% vs 84.5%, 49.3%, 25.9%, 6.2%, P = 0.0151) were detected among the 3 arms. There were no significant differences in OS and PFS between the preoperative CRT and postoperative CRT arm (P > 0.05). For the patients who had radical resection, significant differences in median PFS (48 mo vs 61 mo vs 39.5 mo, P = 0.0331) and median OS (56.5 mo vs 72 mo vs 41.5 mo, P = 0.0153) were detected among the 3 arms, but there were no significant differences in OS and PFS between the preoperative CRT and postoperative CRT arm (P > 0.05). The local recurrence rates in the preoperative CRT, postoperative CRT group and S group were 11.3%, 14.1% and 35%, respectively (P < 0.05). No significant differences were detected among the 3 groups when comparing complications but tended to be in favor

关键词： Esophageal cancer Surgery Esophagectomy Chemotherapy Radiation therapy

Effect of neoadjuvant chemoradiotherapy on prognosis and surgery for esophageal carcinoma

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World Journal of Gastroenterology 2009年第39期15卷 4962-4968页

作者： jin Lv xiu-Feng Cao Bin Zhu Lv ji Lei Tao Dong-Dong wang Oncology Center Department of Surgery Affiliated Nanjing First Hospital of Nanjing Medical University and Oncology Center of Nanjing Medical University Nanjing 210006 Jiangsu Province China

AIM:To investigate the role of neoadjuvant chemoradiotherapy in prognosis and surgery for esophageal carcinoma by a ***:PubMed and manual searches were done to identify all published randomized controlled trials(RCTs) that compared neoadjuvant chemoradiotherapy plus surgery(CRTS) with surgery alone(S) for esophageal *** to the test of heterogeneity,a fi xed-effect model or a random effect model was used and the odds ratio(OR) was the principal measure of ***:Fourteen RCTs that included 1737 patients were selected with quality assessment ranging from A to C(Cochrane Reviewers' Handbook 4.2.2).OR(95% CI,P value),expressed as CRTS vs S(values>1 favor CRTS arm),was 1.19(0.94-1.48,P=0.28) for 1-year survival,1.33(1.07-1.65,P=0.69) for 2-year survival,1.76(1.42-2.19,P=0.11) for 3-year survival,1.41(1.06-1.87,P=0.11) for 4-year survival,1.64(1.28-2.12,P=0.40) for 5-year survival,0.82(0.39-1.73,P<0.0001) for rate of resection,1.53(1.33-2.84,P=0.007) for rate of complete resection,1.78(1.14-2.78,P=0.79) for operative mortality,1.12(0.89-2.48,P=0.503) for all treatment mortality,1.33(0.94-1.88,P=0.04) for the rate of adverse treatment,1.38(1.23-1.63,P=0.0002) for local-regional cancer recurrence,1.28(0.85-1.58,P=0.60) for distant cancer recurrence,and 1.27(0.86-1.65,P=0.19) for all cancer recurrence.A complete pathological response to chemoradiotherapy occurred in 10%-45.5% of *** 5-year survival benefi t was most pronounced when chemotherapy and radiotherapy were given concurrently(OR:1.45,95% CI:1.26-1.79,P=0.015) instead of sequentially(OR:0.85,95% CI:0.64-1.35,P=0.26).CONCLUSION:Compared with surgery alone,neoadjuvant chemoradiotherapy can improve the long-term survival and reduce local-regional cancer *** administration of neoadjuvant chemoradiotherapy was superior to sequential chemoradiotherapy.

关键词： Esophageal neoplasms/surgery Esophageal neoplasms/radiotherapy Antineoplastic agents Postoperative complications Prospective studies Randomized controlled trial Meta-analysis