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Washing out heavy metals from contaminated soils from an iron and steel smelting site

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frontiers of Environmental Science & Engineering 2015年第4期9卷 634-641页

作者： Guangxu ZHU Qingjun GUO Junxing YANG Hanzhi ZHANG Rongfei WEI Chunyu WANG Marc peters Xiaoyong ZHOU Jun YANG Center for Environmental Remediation Institute of Geographical Sciences and Natural Resources Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China

Washing is a promising method for separating contaminants bound to the particles of soil ex-situ by chemical mobilization. Laboratory batch washing experi- ments were conducted using deionized water and varying concentrations of oxalic acid, citric acid, tartaric acid, acetic acid, hydrochloric acid and ethylenediaminetetra acetic acid （EDTA） to assess the efficiency of using these chemicals as washing agents and to clean up heavy metals from two heavily polluted soils from an iron and streel smelting site. The toxicity reduction index and remediation costs were analyzed, and the results showed that the soils were polluted with Cd, Pb and Zn. Hydrochloric acid and EDTA were more efficient than the other washing agents in the remediation of the test soils. The maximum total toxicity reduction index showed that 0.5 mol·L^-1 hydro- chloric acid could achieve the remediation with the lowest costs.

关键词： heavy metals soil washing toxicity reduction index iron and steel smelting site

Characteristics of Chinese Overseas foreign Direct Investment in Latin America(2000-2012)

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Contemporary International Relations 2013年第5期23卷 105-129,5页

作者： Enrique Dussel peters the Graduate School of Economics National Autonomous University of Mexico (UNAM) Coordinator of the Center for Chinese-Mexican Studies at the School of Economics at UNAM

This paper is based on two important facts concerning Chinese overseas foreign direct investment （OfDI）. first off, there is a strong coherence amongst Chinese public sector policies, including those aimed toward t... 详细信息

关键词：外国直接投资拉丁美洲中国海外特性对外直接投资公共部门 fDI

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面向城市场景异源多时相点云的自动配准

中国激光 2023年第10期50卷 203-213页

作者：杨泽鑫叶勤王旭飞 Ravi peters 同济大学测绘与地理信息学院上海200092 代尔夫特理工大学三维地理信息研究组荷兰代尔夫特2628 BL 同济大学上海自主智能无人系统科学中心上海200092

异源多时相点云数据是建设数字城市和智慧社会的关键空间数据支撑,其准确配准是开展各类后续应用的前提。针对异源多时相点云配准任务中数据规模大、结构差异大、场景变化大的难点,本文提出了一种自动的无控配准方法。首先将城市场景的... 详细信息

异源多时相点云数据是建设数字城市和智慧社会的关键空间数据支撑,其准确配准是开展各类后续应用的前提。针对异源多时相点云配准任务中数据规模大、结构差异大、场景变化大的难点,本文提出了一种自动的无控配准方法。首先将城市场景的整体点云数据过分割为平面区块,交汇相邻的平面生成稳定而特异的对象级虚拟关键点;然后将关键点间的刚体几何空间关系编码为图结构间的距离约束,匹配获取待配点云与目标点云间的同名点对;最后利用同名点对求取刚体转换参数,并应用转换参数将待配点云转换至目标点云的坐标系中。选择荷兰鹿特丹市某一典型城市场景地块的异源多时相点云数据验证了所提方法的有效性。实验结果表明,本文方法能够自动、准确、高效地实现城市场景异源多时相点云的无控配准,具有较高的工程应用价值。

关键词：遥感点云配准刚体运动学异源多时相点云激光雷达摄影测量点云

Analyzing the Potential for Highspeed Rail as Part of the Multimodal Transportation System in the United States’Midwest Corridor

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International Journal of Transportation Science and Technology 2014年第2期3卷 129-148页

作者： Jeffrey C.peters En-Pei Han Srinivas Peeta Daniel DeLaurentis Purdue University School of Civil Engineering/Nextrans Center3000 Kent AvenueWest LafayetteIN 47906 Purdue University School of Aeronautics and Astronautics701 West Stadium AvenueWest LafayetteIN 47907

With increasing demand and rising fuel costs,both travel time and cost of current intercity passenger transportation modes are becoming increasingly *** the world,high-speed rail(HSR)is seen as a way to alleviate demand on highways and at *** is the critical element in determining the viability of a large capital,long-term transportation *** paper provides a systematic,consistent methodology for analyzing systemwide modal ridership with and without a proposed HSR network and analyzes the potential for high-speed rail as part of the existing multimodal transportation system in a region in terms of *** of capital investment(e.g.,network design and HSR speed),along with exogenous demographic,technological,economic,and policy trends in the long-term,are used to project ridership over *** study represents an important step toward a consistent,comprehensive economic analysis of HSR in the United States.

关键词： investment modal network

直喷式柴油发动机缸内三维温度场的计算与试验

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机械工程学报 2007年第2期43卷 196-201页

作者：刘永峰张幽彤秦建军 peters Nobert 北京理工大学机械与车辆工程学院北京交通大学机械与电子控制工程学院北京100044 亚琛工业大学工程机械所

为计算直喷式柴油发动机缸内燃烧温度,提出利用理想混合比质量分数空间来计算缸内温度场。通过引入混合比质量分数基本概念,推导出各种组分与混合比质量分数的关系。通过引入小火焰的假设,分析典型非预混合小火焰结构,推导出绝热状况下... 详细信息

为计算直喷式柴油发动机缸内燃烧温度,提出利用理想混合比质量分数空间来计算缸内温度场。通过引入混合比质量分数基本概念,推导出各种组分与混合比质量分数的关系。通过引入小火焰的假设,分析典型非预混合小火焰结构,推导出绝热状况下缸内温度与混合比质量分数的关系。在理想混合比质量分数空间坐标系下建立新的温度输运方程,提供一种将湍流化学反应场和湍流运动场分离开的方法。经过一系列参数的输入,计算出缸内温度与扩散尺度速率关系,缸内温度与混合比质量分数关系以及缸内火焰温度分布,试验验证了计算结果。为计算直喷式柴油发动机缸内燃烧温度以及污染物成分提供新的计算方法。

关键词：直喷式柴油发动机小火焰假设湍流燃烧混合比质量分数

Dynamic graph exploration by interactively linked node-link diagrams and matrix visualizations

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Visual Computing for Industry,Biomedicine,and Art 2021年第1期4卷 219-232页

作者： Michael Burch Kiet Bennema ten Brinke Adrien Castella Ghassen Karray Sebastiaan peters Vasil Shteriyanov Rinse Vlasvinkel Eindhoven University of Technology 5600MB EindhovenThe Netherlands

The visualization of dynamic graphs is a challenging task owing to the various properties of the underlying relational data and the additional time-varying *** sparse and small graphs,the most efficient approach to such visualization is node-link diagrams,whereas for dense graphs with attached data,adjacency matrices might be the better *** graphs can contain both properties,being globally sparse and locally dense,a combination of several visual metaphors as well as static and dynamic visualizations is *** this paper,a visually and algorithmically scalable approach that provides views and perspectives on graphs as interactively linked node-link and adjacency matrix visualizations is *** the novelty of this technique,insights such as clusters or anomalies from one or several combined views can be used to influence the layout or reordering of the other ***,the importance of nodes and node groups can be detected,computed,and visualized by considering several layout and reordering properties in combination as well as different edge properties for the same set of *** an additional feature set,an automatic identification of groups,clusters,and outliers is provided over time,and based on the visual outcome of the node-link and matrix visualizations,the repertoire of the supported layout and matrix reordering techniques is extended,and more interaction techniques are provided when considering the dynamics of the graph ***,a small user experiment was conducted to investigate the usability of the proposed *** usefulness of the proposed tool is illustrated by applying it to a graph dataset,such as e co-authorships,co-citations,and a Comprehensible Perl Archive Network distribution.

关键词： Dynamic graph visualization Node-link diagrams Adjacency matrices Layouts Reorderings

Hepatocellular Ballooning is Due to Highly Pronounced Glycogenosis Potentially Associated with Steatosis and Metabolic Reprogramming

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Journal of Clinical and Translational Hepatology 2024年第1期12卷 52-61页

作者： Silvia Ribback Kristin peters Mohd Yasser Jessica Prey Paula Wilhelmi Qin Su frank Dombrowski Peter Bannasch Institut für Pathologie Universitaetsmedizin GreifswaldGreifswaldGermany Cell Marque Millipore-SigmaRocklinCAUSA German Cancer Research Center(DKfZ) HeidelbergGermany

Background and Aims:Hepatocellular ballooning is a common finding in chronic liver disease,mainly characterized by rarefied cytoplasm that often contains Mallory-Denk bodies(MDB).Ballooning has mostly been attributed to degeneration but its striking resemblance to glycogenotic/steatotic changes characterizing preneoplastic hepatocellular lesions in animal models and chronic human liver diseases prompts the question whether ballooned hepatocytes(BH)are damaged cells on the path to death or rather viable cells,possibly involved in neoplastic ***:Using specimens from 96 cirrhotic human livers,BH characteristics were assessed for their glycogen/lipid stores,enzyme activities,and proto-oncogenic signaling cascades by enzyme-and immunohistochemical approaches with serial paraffin and cryostat ***:BH were present in 43.8%of cirrhotic *** pronounced excess glycogen storage of(glycogenosis)and/or lipids(steatosis)were characteristic,ground glass features and MDB were often *** glucose-6-phosphatase,increased glucose-6-phosphate dehydrogenase activity and altered immunoreactivity of enzymes involved in glycolysis,lipid metabolism,and cholesterol biosynthesis were ***,components of the insulin signaling cascade were upregulated along with insulin dependent glucose transporter glucose transporter 4 and the v-akt murine thymoma viral oncogene homolog/mammalian target of rapamycin signaling pathway associated with de novo ***:BH are hallmarked by particularly pronounced glycogenosis with facultative steatosis,many of their features being reminiscent of metabolic aberrations documented in preneoplastic hepatocellular lesions in experimental animals and chronic human liver ***,BH are not damaged entities facing death but rather viable cells featuring metabolic reprogramming,indicative of a preneoplastic nature.

关键词： Chronic liver disease Carbohydrate metabolism Insulin signaling Preneoplasia Metabolic reprogramming

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造迹生物鉴定的翼龙足部分类(英文)

地球学报 2010年第S1期31卷 55-56页

作者： David peters 9 Greenfield Court St.CharlesMO 63303 USA

Currently there is no ready reference source of pterosaur pedes available to match ichnotaxa to potential trackmakers.

关键词：生物鉴定翼龙足部分类

无机水化学离子在实验流域降雨径流过程中的响应及其示踪意义

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水科学进展 2007年第1期18卷 1-7页

作者：顾慰祖陆家驹赵霞 Norman E peters 南京水利科学研究院河海大学 U.S.Geological Survey Atlanta GA USA30360

为研究无机水化学离子在降雨径流示踪中的可能性,在实验流域实测降雨、地面径流、壤中流、地下水径流过程和流域内17个测孔的地下水过程中,施测了Na+,K+,Ca2+,Mg2+,Cl-,SO42-,HCO3-+CO32-,NO3-,f-,NH4-,PO42-,SiO2和pH,EC,18O的同步过程... 详细信息

为研究无机水化学离子在降雨径流示踪中的可能性,在实验流域实测降雨、地面径流、壤中流、地下水径流过程和流域内17个测孔的地下水过程中,施测了Na+,K+,Ca2+,Mg2+,Cl-,SO42-,HCO3-+CO32-,NO3-,f-,NH4-,PO42-,SiO2和pH,EC,18O的同步过程,还施测了少数土壤水水样。结果是:①在Ca2+与Cl-/SO42-和EC与Na+/(Na++Ca2+)的关系中以及除NO3-,NH4-,PO42-外的所有离子,都可识别出上述各种径流组分;②径流离子过程均与降雨离子过程相仿,随径流组分从地面到地下而渐趋坦化;③除个例外,离子浓度过程均以降雨为最小并从地面径流到地下水径流渐次增大;④降雨和地下水离子过程表现为径流离子过程的两端元;⑤在降雨和各径流组分中,18O过程与大部分离子过程有一定的同步性。从以上结果认为,降雨并不是流域径流离子输出的主要来源,然而却是形成它的主要控制因素。此外,有关试验结果还对应用Cl-进行地下水补给的估算方法提出了问题。

关键词：实验流域同位素水文学示踪技术降雨径流过程无机水化学离子