Concept

Indice adiabatique

Publications associées (194)

Low Energy Collisions in Merged Neutral Molecular Beams

Within this thesis two experiments will be described. In the first experiment a velocity filter was used to obtain a beam of polar molecules (ND3) with a translational temperature of less than 5K. For the first time the dynamics of individual rotational st ...

EPFL2014

Effect of radial base-plate welds on ULCF capacity of unanchored tank connections

Alain Nussbaumer, Gary Scott Prinz

The base of large steel liquid storage tanks can uplift during severe earthquakes, causing large inelastic rotations at the connection between the tank shell and tank base. While recent experimental studies indicate significantly higher connection rotation ...

Elsevier2014

Experimental testing and simulation of bolted beam-column connections having thick extended endplates and multiple bolts per row

Alain Nussbaumer, Gary Scott Prinz, Luís Costa Borges, Shyam Khadka

Retrofit of existing steel buildings often requires strengthening of the connection regions. One common connection, the bolted beam-column connection, is often strengthened in design using stiffened extended endplates, or with continuity plates welded betw ...

Elsevier2014

Analysis of adiabatic trapping for quasi-integrable area-preserving maps

Cedric Jean-François Hernalsteens, Massimo Giovannozzi

Trapping phenomena involving nonlinear resonances have been considered in the past in the framework of adiabatic theory. Several results are known for continuous-time dynamical systems generated by Hamiltonian flows in which the combined effect of nonlinea ...

American Physical Society2014

Intensification of highly exothermic fast reaction by multi-injection microstructured reactor

Albert Renken, John Richard Thome, Lioubov Kiwi, Thomas Maeder, Navid Borhani, Bo Jiang, Julien Haber

Microstructured reactors (MSR) with characteristic dimensions below 100 μm are warranted to maintain close to isothermal conditions when carrying out quasi-instantaneous highly exothermic reactions. Unfortunately, such small dimensions increase the risk of ...

Elsevier2014

Experimental Investigation on Punching Strength and Deformation Capacity of Shear-Reinforced Slabs

Aurelio Muttoni, Miguel Fernández Ruiz, Stefan Lips

The authors report on punching tests with full-scale slab specimens. The objective was to investigate the influence of several parameters on the punching strength and rotation capacity of flat slabs ...

American Concrete Institute2013

Possible spin-orbit driven spin-liquid ground state in the double perovskite phase of Ba

Henrik Moodysson Rønnow, Arash Alahgholipour Omrani

We report the structural transformation of hexagonal Ba3YIr 2O9 to a cubic double perovskite form (stable in ambient conditions) under an applied pressure of 8 GPa at 1273 K. While the ambient pressure synthesized sample undergoes long-range magnetic order ...

2013

Possible spin-orbit driven spin-liquid ground state in the double perovskite phase of Ba3YIr2O9

Henrik Moodysson Rønnow, Arash Alahgholipour Omrani

We report the structural transformation of hexagonal Ba3YIr2O9 to a cubic double perovskite form (stable in ambient conditions) under an applied pressure of 8 GPa at 1273 K. While the ambient pressure synthesized sample undergoes long-range magnetic orderi ...

Amer Physical Soc2013

Low-energy spin dynamics of the s=1/2 kagome system herbertsmithite

Henrik Moodysson Rønnow, Goran Nilsen

The low-energy (epsilon = (h) over bar < 1 meV), low-temperature (T = 0.05 K) spin dynamics of the s = 1/2 kagome candidate herbertsmithite are probed in the presence of magnetic fields up to 2.5 T. The zero-field spectra reveal a very weak continuum of sc ...

Institute of Physics2013

Heat Management for Process Intensification of Fast Exothermic Reactions in Microstructured Reactors

Julien Haber

Nowadays, the production in fine chemical and pharmaceutical industry is mostly carried out in large scale batch reactors having typically dimensions of a few meters to satisfy the demand of the market. Even though this technology has been widely used and ...

EPFL2013

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