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Improved source assessment of Si,Al and related mineral components to PM_(10) based on a daily sampling procedure

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Journal of Environmental Sciences 2010年第4期22卷 582-588页

作者： Ge Peng hans Puxbaum Heidi Bauer Nicole Jankowski Yao Shi Chemical Engineering College Ningbo University of Technology Ningbo 315016 China. Institute for Chemical Technologies and Analytics Vienna University of Technology Vienna 1060 Austria College of Environmental and Resource Sciences Zhejiang University Hangzhou 310027 China

Samples obtained from an industrialized valley in the East Alpine region were collected daily for a half year and analyzed using X-ray fluorescence to examine the elements Si, Al, Fe, Ca, Mg, Na, K, Zn, P, S and Cl. Some factors affecting the changes of these elements were considered, including time, elemental correlations, weekday, weekend and seasonal changes. Diagnostic analysis provided an insight into a decoupling behavior that occursin siliceous and carbonates minerals. A decrease in Si and Al and an increase in carbonates, Na, K, Zn and P were observed during the cold season. However, a consistently high correlation of Si and Al was observed in all seasons. It was established that such high levels originated from street surface abrasion. The increase in variability and absolute levels of carbonates during the cold season was demonstrated by adding carbonates to the street surface as gritting material to increase the grip on snowy surfaces. A marked increase in Na and Cl was observed in winter which may have been caused by thaw salt that is widely used in winter in Austria. This was associated with a significant increase in K, Zn, and P in the cold season that was the result of domestic space heating with wood. PM10 levels in December were 12 μ/m^3 and were higher than levels detected in July. It was established that such high levels originated from mineral oxides, wood smoke, and inorganic ionic material（s）.

关键词： particulate matter PM10 mineral aerosol silicates carbonates street dust wood combustion thaw salt

Necessity and Memory in Hegel's Phenomenology of Spurut A Reconstruction

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Frontiers of Philosophy in China 2018年第4期13卷 505-517页

作者： hans-Georg Moeller Philosophy and Religious Studies Program University of MacaoMacaoChina

This paper discusses two core concepts in Hegel’s Phenomenology of Spirit: necessity (Notwendigkeit) and memory (Erinnerung). The analysis is based on an investigation of the connotations and linguistic components of the two terms as they are used in the German language. Occurrences of the terms in decisive passages in the Phenomenology of Spirit are investigated and seen as a key to an understanding of Hegel’s overall project of constructing a “scientific” (wissenschaftlich) philosophy in the form of a conceptual system. The paper aims at showing that this project can in part be understood as an attempt to transform the contingency of all moments of the path of the self-cultivation, maturation, and growth (Bildung) of spirit (Geist)—understood both in terms of its personal dimension and as “world spirit”—into necessity. It is argued that memory plays a decisive role in this endeavor, not only in the sense of a recalling of the past, but also as a prerequisite for a future that opens up room for further cultivation, maturation, and growth.

关键词： Hegel Phenomenology of Spirit necessity memory system

BUSINESS ENTERPRISES AND THE ENVIRONMENTAL INFORMATION ACT IN NORwAY

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Frontiers of Law in China-Selected Publications from Chinese Universities 2017年第1期12卷 3-23页

作者： hans Petter Graver University of Oslo Oslo Norway

Making market operators responsible for having and giving access to information about their impact on the environment is an important part of changing the way the economy operates in relation to environmental sustainability. To this end, the Norwegian access to environmental information act has established a right for the public to access to environmental information from private entities such as business enterprises. In this point, the Norwegian Act goes further than international rules, such as the Aarhus Convention, and also further than any other national legislation. This article presents the rules on access to information from business enterprises, and presents and discusses examples from the implementation of these rules.

关键词： Aarhus Convention access to information corporate social responsibility,environmental information responsible business

Dynamics and self-assembly of bio-functionalized gold nanoparticles in solution： Reactive molecular dynamics simulations

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Nano Research 2018年第4期11卷 1757-1767页

作者： Susanna Monti Giovanni Barcaro Luca Sementa Vincenzo Carravetta hans Agren CNR-ICCOM Institute of Chemistry of Organometallic Compounds Pisa 56124 Italy KTH Royal Institute of Technology School of Biotechnology Division of Theoretical Chemistry and Biology Stockholm S- 10691 Sweden CNR-IPCF Institute of Chemical and Physical Processes Pisa 56124 Italy Institute of Nanotechnology Spectroscopy and Quantum Chemistry Siberian Federal University Svobodny pr. 79 660041 Krasnoyarsk Russia

The self-assembling properties, stability, and dynamics of hybrid nanocarriers （gold nanoparticles （AuNPs） functionalized with cysteine-based peptides） in solution are studied through a series of classical molecular dynamics simulations based on a recently parametrized reactive force field. The results reveal, at the atomic level, all the details regarding the peptide adsorption mechanisms, nanoparticle stabilization, aggregation, and sintering. The data confirm and explain the experimental findings and disclose aspects that cannot be scrutinized by experiments. The biomolecules are both chemisorbed and physisorbed; self-interactions of the adsorbates and formation of stable networks of inter- connected molecules on the AuNP surfaces limit substrate reconstructions, protect the AuNPs from the action of the solvent, and prevent direct interactions of the gold surfaces. The possibility of agglomeration of the functionalized nanoparticles, compared with the sintering of the bare supports in a water solution, is demonstrated through relatively long simulations and fast steered dynamics. The analysis of the trajectories reveals that the AuNPs were well stabilized by the peptides. This prevented particle sintering and kept the particles far apart; however, part of their chains could form interconnections （crosslinks） between neighboring gold vehicles. The excellent agreement of these results with the literature confirm the reliability of the method and its potential application to the modeling of more complex materials relevant to the biomedical sector.

关键词： nanoparticle ReaxFF functionalization cross-linking biocompatibility

PHOTOVISCOELASTICITY—AN EXPERIMENTAL METHOD IN VISCOELASTIC STRESS ANALYSIS

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Applied Mathematics and Mechanics(English Edition) 1987年第11期8卷 1019-1026页

作者： Karl-hans Laermann Bergische Universitat-Gesamthochschule wuppertal west Germany

In this paper,the photoviscoelasticity method of viscoelastic stress analysis has beendiscussed in *** is shown that,in order to avoid the effects of shrinkage andaging in thetest specimens,it is suggested that the specimens should be tempered for three days at atemperature of 60℃ before starting the experiments,and the temperature filteringarrangement is recommended in the experimental setups to keep the temperature *** the axi-symmetrical time-dependent stress state,the determination of theprinciple axes of the refraction tensor experimentally remains an unsufficiently *** avoid dynamic effect in the step wise loading,the time of measurement in everystep should be limited in about one secend.

关键词： AN EXPERIMENTAL METHOD IN VISCOELASTIC STRESS ANALYSIS PHOTOVISCOELASTICITY

Customer Activity Sequence Classification for Debt Prevention in Social Security

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Journal of Computer Science & Technology 2009年第6期24卷 1000-1009页

作者：张淮风 Yanchang Zhao 操龙兵张成奇 hans Bohlscheid Payment Reviews Branch Business Integrity Division Centrelink Canberra Australia Centre for Quantum Computation and Intelligent Systems (QCIS) University of Technology Sydney Australia

From a data mining perspective, sequence classification is to build a classifier using frequent sequential patterns. However, mining for a complete set of sequential patterns on a large dataset can be extremely time-consuming and the large number of patterns discovered also makes the pattern selection and classifier building very time-consuming. The fact is that, in sequence classification, it is much more important to discover discriminative patterns than a complete pattern set. In this paper, we propose a novel hierarchical algorithm to build sequential classifiers using discriminative sequential patterns. Firstly, we mine for the sequential patterns which axe the most strongly correlated to each target class. In this step, an aggressive strategy is employed to select a small set of sequential patterns. Secondly, pattern pruning and serial coverage test are done on the mined patterns. The patterns that pass the serial test are used to build the sub-classifier at the first level of the final classifier. And thirdly, the training samples that cannot be covered are fed back to the sequential pattern mining stage with updated parameters. This process continues until predefined interestingness measure thresholds are reached, or all samples axe covered. The patterns generated in each loop form the sub-classifier at each level of the final classifier. within this framework, the searching space can be reduced dramatically while a good classification performance is achieved. The proposed algorithm is tested in a real-world business application for debt prevention in social security area. The novel sequence classification algorithm shows the effectiveness and efficiency for predicting debt occurrences based on customer activity sequence data.

关键词： sequential pattern mining sequence classification coverage test interestingness measure

Linking monitoring and modelling for river basin management:Danish experience with combating nutrient loadings to the aquatic environment from point and non-point sources

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Science China(Technological Sciences) 2009年第11期52卷 3335-3347页

作者： KRONVANG Brian wINDOLF JФrgen GRANT Ruth ANDERSEN hans E THODSEN hans OVESEN Niels B LARSEN SФren E National Environmental Research Institute Aarhus University VejlsФvej 25 DK-8600 Silkeborg Denmark

Nationwide monitoring of the aquatic environment was initiated in 1988 in Denmark as a means to follow the outcome of the Action Plans for nutrient pollution of the aquatic environment. Five Action Plans have been adopted by the Danish Parliament since 1985 and the nationwide monitoring programme can be used to quantify the outcome as shown by reductions in nutrient discharges from both point and non-point sources. Moreover, the empirical experience gathered from nearly 20 years of monitoring is assisting the development and calibration of models for simulation of nitrogen leaching, nitrogen removal in groundwater and surface waters and the establishment of a P-index all covering the entire land area of Denmark.

关键词： nitrogen phosphorus monitoring data point sources non-point sources models Action Plans Danish experience

Complexity of Some Problems Concerning 2CNF Formulas

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中山大学学报（社会科学版） 2003年第S1期43卷 131-146页

作者： hans Kleine Büning 帕德恩大学

In this paper we investigate the complexity of several problems concerning 2CNF formulas. At first, we show that the minimal unsatisfiability problem for 2CNF formulas can be solved in linear time. Then we prove that the problem determining if a 2CNF formula can be transformed to a minimal unsatisfiable formula is also solvable in linear time. Thirdly, we show the polynomial solvability of the satisfiability problem for symmetric monotone formulas in which all clauses has length 2 or ? n - k ( n is the ...

关键词： minimal unsatisfiable formulas symmetric monotone formulas satisfiability complexity

River restoration challenges with a specific view on hydromorphology

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Frontiers of Structural and Civil Engineering 2020年第5期14卷 1033-1038页

作者： Jianhua LI Stephan HOERBINGER Clemens wEISSTEINER Lingmin PENG hans Peter RAUCH Key Laboratory of Yangtze River water Environment Tongji UniversityShanghai 100029China Institute of Soil Bioengineering and Landscape Construction University of Natural Resources and Life SciencesViennaAustria GeoVerde OG Landscape EngineersViennaAustria

1 Introduction 1.1 River ecosystem degradation Over the past century,almost throughout the whole world,streams and rivers have been heavily polluted and morphologically degraded due to industrial,household and agricultural sources,leading to significant declines in biodiversity,water quality and ultimately water supply[1-5].In the last decades,river system design has been practiced from an engineering viewpoint that focuses on water abstraction,sanitation,generation of energy,transportation and safety,rather than from a socio-ecological *** technical management altered the understanding of a functioning river system itself and its social context.

关键词： river restoration transportation