Concept

Premier principe de la thermodynamique

Publications associées (160)

Size effects in drift capacities of URM walls

Examining the results of a large set of quasi-static cyclic tests on unreinforced masonry (URM) walls showed that the drift capacity of URM walls reduces with increasing wall size. Such a size effect is of concern since most wall tests were carried out on ...

2015

Engineering improved productivity of 1,4-butanediol in E. coli – a kinetic modeling approach

Vassily Hatzimanikatis, Ljubisa Miskovic, Keng Cher Soh, Anirikh Chakrabarti, Stefano Andreozzi

Microbial cell factories are becoming a norm for commercially viable production of chemicals for pharmaceutical, biotechnology, food and beverage industries. However, engineering of microbial cell factories requires a simultaneous optimization of several c ...

2014

Direct path integral estimators for isotope fractionation ratios

Michele Ceriotti, Bingqing Cheng

Fractionation of isotopes among distinct molecules or phases is a quantum effect which is often exploited to obtain insights on reaction mechanisms, biochemical, geochemical, and atmospheric phenomena. Accurate evaluation of isotope ratios in atomistic sim ...

American Institute of Physics2014

Use of X-ray diffraction to quantify amorphous supplementary cementitious materials in anhydrous and hydrated blended cements

Karen Scrivener, Ruben Anton Snellings

The content of individual amorphous supplementary cementitious materials (SCMs) in anhydrous and hydrated blended cements was quantified by the PONKCS [1] X-ray diffraction (XRD) method. The analytical precision and accuracy of the method were assessed thr ...

Pergamon-Elsevier Science Ltd2014

Influence of boundary conditions and size effect on the drift capacity of URM walls

Katrin Beyer, Sarah Petry

In codes the drift capacity of unreinforced masonry (URM) walls is often estimated as a function of the failure mode and the aspect ratio. The empirical relationships are based on results from quasi-static cyclic tests on single URM walls, which were teste ...

Elsevier2014

Quasi-static cyclic tests on U-shaped reinforced concrete walls subjected to diagonal loading

Katrin Beyer, Raluca-Tereza Constantin

This article presents the test setup of two quasi-static cyclic tests on U-shaped walls under horizontal diagonal loading recently performed at EPF Lausanne. The results of the first test are discussed in terms of global behaviour: failure mechanisms and f ...

2014

Modelling shear–flexure interaction in equivalent frame models of slender reinforced concrete walls

Katrin Beyer, Panagiotis Mergos

Quasi-static cyclic tests on reinforced concrete (RC) walls have shown that shear deformations can constitute a significant ratio of the total deformations when the wall is loaded beyond the elastic regime. For slender RC walls that form a stable flexural ...

2014

Numerical study on the force-deformation behaviour of masonry spandrels with arches

Katrin Beyer, Sujith Mangalathu Sivasubramanian Pillai

This paper presents a numerical study on the force-deformation behaviour of masonry spandrels supported on arches which are analysed using simplified micro models. The model is validated against results from quasi-static cyclic tests on masonry spandrels. ...

Taylor & Francis2014

The collisional depolarization of OH(A (2)Sigma(+)) and NO(A (2)Sigma(+)) with Kr

Quantum beat spectroscopy has been used to measure rate coefficients at 300 K for collisional depolarization for NO(A (2)Sigma(+)) and OH(A (2)Sigma(+)) with krypton. Elastic depolarization rate coefficients have also been determined for OH(A) + Kr, and sh ...

Amer Inst Physics2014

Scaling unreinforced masonry for reduced-scale seismic testing

Katrin Beyer, Sarah Petry

When testing multi-storey structures, most testing facilities require the testing of a reduced-scale model. A literature review on tests of scaled masonry structural components revealed that scaling of masonry was rather challenging and often significant d ...

Springer Verlag2014

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