Results 101 to 110 of about 5,517 (250)

Mobile electromagnetic levitator for time‐resolved in situ X‐ray diffraction studies of high‐temperature phase transformations

Journal of Synchrotron Radiation, EarlyView.
A mobile electromagnetic levitator combined with time‐resolved synchrotron X‐ray diffraction enables in situ studies of high‐temperature phase transformations without container‐induced contamination and reveals the first direct observation of metastable phase formation in undercooled Fe–Co alloys.In situ observations of high‐temperature transformations,
Olga Shuleshova, Ivan Kaban, Steffen Ziller, Uwe Reinhold, Ann-Christin Dippel, Olof Gutowski, Martin von Zimmermann   +6 more
wiley   +1 more source

Effect of Change of Rail Profile on Rolling Contact Fatigue at Wheel-Rail Interface

, 2017
The general objective of this thesis is to analyze effect of change of radiuses curvature of Rail profile on contact fatigue stress using analytic and finite element software’s. The formulation in this study aims primarily at determination of stresses and fatigue parameters by varying contact area arising from variation in radiuses curvature of Rail ...
openaire   +6 more sources

Liquid jet capabilities for ultrafast chemistry at the SwissFEL Alvra instrument

Journal of Synchrotron Radiation, EarlyView.
The technical aspects of the Alvra endstation are outlined and its scientific capabilities are demonstrated with commissioning results obtained during the early years of SwissFEL's operation.The Alvra experimental station at the Swiss X‐ray free‐electron laser, SwissFEL, investigates ultrafast dynamics in chemical and biological systems using X‐ray ...
Claudio Cirelli, Emma Victoria Beale, Florian Dworkowski, Victoria Kabanova, Sven Augustin, Gregor Knopp, Chris Milne, Christoph Bostedt, Philip J. M. Johnson, Camila Bacellar   +9 more
wiley   +1 more source

An induction heating system for in situ X‐ray diffraction imaging: design, simulation and application to dislocation dynamics in semiconductors

Journal of Synchrotron Radiation, EarlyView.
This work presents a compact induction heating system for time‐resolved in situ X‐ray diffraction imaging. The system enables contact‐free volumetric heating up to approximately 1600°C and provides flexible operation in different operating modes. Its performance is demonstrated through representative diffraction imaging experiments.We present a compact
Merve P. Kabukcuoglu, Nikolaos Sagias, Elias Hamann, Carsten Richter, Marcus Zuber, Kaspars Dadzis, Daniel Hänschke   +6 more
wiley   +1 more source

Full‐field X‐ray fluorescence imaging using a Fresnel zone plate as a coded aperture: optimized reconstruction algorithm and first trial of hyperspectral XANES mapping

Journal of Synchrotron Radiation, EarlyView.
The full‐field X‐ray fluorescence imaging method, where a Fresnel zone plate is employed as a coded aperture, was tested for the first time at a beamline, and its corresponding reconstruction code was optimized. It was also employed to perform, also for the first time using full‐field and fluorescence modes, hyperspectral XANES mapping.This study ...
Gautier Landrot, Arkadiusz Dawiec, Björn Eckert, Petra Majewski, Michael Brunner, Andrew Fram, Martin Huth, Guillaume Alizon, Claude Menneglier, Enrico Piasentier, Karine Chaouchi, Stéphanie Blanchandin, Pascal Mercere, Martin Chauvin, Emiliano Fonda   +14 more
wiley   +1 more source

Design Method of Rail Grinding Profile Based on Wheel Rail Contact Relationship

AbstractWhen the railway track is damaged, it is essential to grind it in in a timely manner to enhance the wheel-rail contact performance. This paper relies primarily on the rolling radius difference function as the main design basis, taking the expected distribution between the wheel and the rail as the boundary condition. In cases where the abscissa
Rui Song, Dilai Chen, Gang Shen
openaire   +1 more source

CEO Power and Circular Economy Disclosure: The Moderating Role of Institutional Forces

Business Ethics, the Environment &Responsibility, EarlyView.
ABSTRACT This study investigates the impact of CEO power on circular economy disclosure (CED), highlighting the moderating role of institutional pressures on CEO discretion. The analysis draws on a sample of 8354 multinational companies from the Refinitiv database, covering the period 2013–2022.
Saudi‐Yulieth Enciso‐Alfaro, Isabel‐María García‐Sánchez, Filippo Vitolla, Nicola Raimo   +3 more
wiley   +1 more source

Remote investing in Latin America, 1869–1929

The Economic History Review, EarlyView.
Abstract Substantial amounts of British capital flowed to Latin America during the first era of globalization. Companies financed by this capital were typically headquartered in the United Kingdom, but operated thousands of miles away. This paper asks how this geographic separation between governance and business activities affected the valuation of ...
Gareth Campbell, Áine Gallagher, Richard S. Grossman   +2 more
wiley   +1 more source

Organisational dehumanisation: Authority as remedy

European Management Review, EarlyView.
Abstract According to orthodoxy, the human relations movement was a watershed in rehumanising scientifically managed workplaces. In the wake of such purported reform, pundits (theorists and practitioners alike) have typically taken for granted that 21st century approaches to workplace superintendence, birthed in the wake of the Hawthorne Studies and ...
Jean‐Etienne Joullié, Anthony M. Gould, Jeffrey Muldoon   +2 more
wiley   +1 more source

Design of optimized tread profile for high-speed EMUs

机车电传动
To address two significant issues in high-speed electric multiple units (EMU), i.e. degraded vehicle dynamic performance under existing wheel-rail interactions and increased wheel tread wear at elevated operating speeds, this paper proposes an optimized ...
SUN Weinan, CHI Maoru, XIE Yucheng, CAI Wubin, ZHANG Xiao, CHEN Yongfa   +5 more
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