118 research outputs found
In Memoriam: Prof. Jingdong Zhang
No full textCelebrating the electrochemistry legacy: Prof. Zhang was a member of the Editorial Board of ChemElectroChem as well as a valued author and reviewer. Together with her friends and colleagues Christian Engelbrekt, Xinxin Xiao and Jens Ulstrup (Technical University of Denmark) as well as Bingwei Mao (Xiamen University, China), we hope to commemorate Prof Zhang′s contributions to the electrochemical sciences by this Special ChemElectroChem Collection on the theme of “Electrochemical Materials and Interfaces”
New directions in comparative law /
No full text"New dynamics in comparative law" which was held at the University of Örebro in May 2007--Preface.Includes bibliographical references (p. xxi-xxiii) and index.Introduction / Antonina Bakardjieva Engelbrekt and Joakim Nergelius -- Legal change and economic performance : an assessment / Gianmaria Ajani -- Legal cartography and comparative law / Per Bergling -- Development assistance in the legal field : promotion of market economy v human rights / Michael Bogdan -- Can human rights be exported? On the very idea of human rights transplantability / Claudio Corradetti -- 'Cut-and-paste'? Rule of law promotion and legal transplants in war to peace transitions / Richard Zajac Sannerholm -- Ontological and epistemological complexity in comparative constitutional law / Otto Pfersmann -- European constitutional law : its notion, scope and finalities / Rainer Arnold -- Governmental accountability in autonomies : Åland islands in comparison with select autonomies in Europe and elsewhere / Markku Suksi -- Viability of constitutional/non-constitutional Comparison / Johan Lindholm -- Comparative aspects of fundamental rights in Germany and Central and Eastern Europe : the example of Ukraine / Kateryna Karpova -- Making the Principles of European Contract Law : theoretical and methodological aspects / Ole Lando -- The questionable questionnaire : reflections on comparative law method in light of the Principles of European Tort Law / Marten Schultz -- Legal services in conveyancing : a European comparison / Christoph U. Schmid -- Constitutionalization of private law / Anna Lytvynyuk -- Toward an institutional approach to comparative economic law? / Antonina Bakardjieva Engelbrekt -- Modern comparative law : the forces behind and the challenges ahead in the age of transnational harmonisation / Peter -Christian Müller-Graff."New dynamics in comparative law" which was held at the University of Örebro in May 2007--Preface
Stockholms stadshus
No full textgeneral view, Southeast corner of the Stadshusparken, 20 m column with statue of Engelbrekt Engelbrektsson on top (by Christian Eriksson, 1932), 200
Green synthesis and structural control of metal and mineral nanostructures
No full textNanomaterials are widely used in modern technology, especially as catalysts in energy technology. Nanocatalysts are often prepared from expensive elements that constitute a large part of the total device cost. A critical component in the successful implementation of sustainable energy technology is efficiency which in large part comes down to the efficiency of the catalyst. Global issues arising from the use and reliance on fossil fuels urges the transition to sustainable alternatives and the development of new highly efficient nanomaterials. The efficiency depends on structure so controlling size, shape and composition at the atomic level is essential. To this adds low cost if massive use is anticipated. In this work, nanostructures of gold, platinum/gold, platinum/palladium, clinoatacamite (Cu₂(OH)₃Cl), cupric oxide and gold/titanium dioxide were synthesized and broadly characterized, their formation mechanisms studied, and their application as catalysts in relevant systems tested. Solution synthesis of nanomaterials offers large-scale, mild production but control of size, shape and composition is often challenging. This may be improved by expanding the understanding of the complex processes of nanoparticle formation which, however, entails the development of new methods. Two approaches to the advancement of solution synthesis of gold nanomaterials for energy technology were exploited, namely the development of techniques to study nanoparticle formation and the synthesis of active, composite nanomaterials. In the first approach, time-resolved chronopotentiometry, pH, conductivity and turbidity, and ultraviolet-visible light spectroscopy were employed to follow the green synthesis of gold nanoparticles. Several distinct phases were observed with all techniques providing a broad picture of the complex processes. Strong indications of sequential reduction were found and details about ligands and surface immobilized molecules disclosed. This platform is a widely available alternative to traditionally used synchrotron techniques. In the second approach, systematic efforts toward size and shape control of gold nanostructures provided controlled synthesis of not only spherical gold nanoparticles of 8-80 nm but also graphene oxide templated preparation of flat, ring-shaped gold nanostructures up to 1 μm in diameter mainly exposing (111) facets. Increased efficiency of new platinum nanocatalysts was attempted by two parallel strategies. One entailed avoiding inactive bulk platinum using a gold core and leaving only vi an atomically thin platinum shell. The specific catalytic activity of this nanocomposite will be studied in the future. The other strategy was to alloy platinum with a cheaper element, i.e. palladium, while retaining high activity. Supported PdPt alloy nanoparticles were successfully prepared and showed promising performance as catalysts in direct methanol and formic acid fuel cells. Catalysts made from earth-abundant elements may provide other low-cost anternatives to traditional, scarce and expensive catalysts. This may be achieved through niche applications and nanoscale engineering. Copper mineral nanoparticles were prepared and studied for this purpose. A buffered synthesis offering the preparation of phase-pure clinoatacamite Cu₂(OH)₃Cl and tenorite CuO by controlling pH was developed. Detailed crystallographic characterization was obtained by combining X-ray diffraction and infrared spectroscopy. The synthesis of CuO was further optimized and the flat, rod-shaped nanostructures applied as heterogeneous catalysts for oxidative dehydrogenation reactions. High activity and good reusability was found and the potential of this noble metal-free system will be explored further. Solar energy is appealing as a plentiful and free energy source. A plasmonic photoelectrocatalytic system was prepared to utilize visible light by incorporating gold nanoparticles in titanium dioxide. The composite material showed improved optical properties compared to pure titanium dioxide and preliminary catalytic tests were promising
The NanoChemistry group at the Technical University of Denmark (DTU) uses NanoSight’s NTA system for nanoparticle characterization
No full textNanoSight, leading manufacturers of unique nanoparticle characterization technology, describes how the Nano Chemistry group at DTU Copenhagen is utilizing nanoparticle tracking analysis, NTA, in its research and teaching programs
La fin tragique du héros de La chronique d'Engelbrekt
No full textТрагическая кончина героя «Хроники Энгельбректа».
А. рассказывает о смерти Энгельбректа Энгельбректсона, героя «Хроники Энгельбректа». Этот сюжет рассматривается не только в рамках самой хроники, но и шире — в свете религиозных представлений о смерти того времени. Хроника позволяет восстановить ход описанных исторических событий и логику политического мышления, она также материал для изучения истории идей данного периода.The tragic end of the hero of The chronicle of Engelbrekt.
The author relates the death of Engelbrekt Engelbrektsson, the hero of The Chronicle of Engelbrekt. This topic is discussed in the context of the chronicle itself, with particular emphasis on religious beliefs and representations of death from the period. The peculiarity of this chronicle is that it traces historical events and also reflects political thought and the general history of ideas of the period.L'auteur relate la mort d'Engelbrekt Engelbrektsson, le héros de La chronique d'Engelbrekt. Ce thème est abordé dans le cadre de la chronique elle-même et, plus largement, à la lumière des croyances religieuses et des représentations de la mort à époque. La particularité de cette chronique est qu'elle permet de rétablir les événements historiques et qu'elle reflète aussi la pensée politique et, plus généralement, l'histoire des idées de l'époque.Ščeglov Andrej, Mélat Hélène. La fin tragique du héros de La chronique d'Engelbrekt. In: Cahiers slaves, n°3, 2001. La mort et ses représentations (Monde slave et Europe du Nord) pp. 245-263
NanoChemistry Group at DTU uses NanoSight's NTA System for Nanoparticle Characterization
No full text(Nanowerk News) NanoSight, leading manufacturers of unique nanoparticle characterization technology, describes how the Nano Chemistry group at DTU Copenhagen is utilizing nanoparticle tracking analysis, NTA, in its research and teaching programs
Danish Nanochemistry Researchers Use Nanosight NTA to Characterize Nanoparticles
No full textNanoSight, leading manufacturers of unique nanoparticle characterization technology, describes how the Nano Chemistry group at DTU Copenhagen is utilizing nanoparticle tracking analysis, NTA, in its research and teaching programs
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